Monday, December 23, 2019

Relationship Between The American And Western Media And...

Does the mass media affect people’s ideologies and value, do people tend to be deceived themselves by media and become prisoners in the cave. Is it still possible for people to mediate the effects of the media? On September 11th, 2001, when the World Trade Centre in New York was allegedly attacked by hijackers of Al-Qaeda terrorists, the relationship between the United States of America and the rest of the world changed. This essay focuses on the relationship between the American and Western media and their audiences. Also, this essay will explore, through Plato’s allegory of the cave, whether people are watching the shadows through the media just like on the cave wall. This essay has three parts that examine the relationship between the media and audience after September 11th. The essay consists of media manipulation, audience responses and an escape from media influence. The media try to manipulate people based on the government’s ideologies and values in order to gain benefits for the country. On September 11th, 2001, abrupt news shook the entire world when two iconic landmarks in New York were allegedly destroyed by Islamic fundamentalists. This massive attack caused over 2,800 causalities, and about half a million people in New York were estimated that they have experienced Post-Traumatic Stress Disorder (PTSD) because of September 11th. (Templeton Lumley, 2002). News stations, such as The Cable News Network (CNN) and Fox Broadcasting Company (Fox) were repeatedlyShow MoreRelatedWestern Media And Its Coverage Of Terrorism1155 Words   |  5 Pagestrue conviction that the world can be viewed flat as well as three-dimensional, then being presented with the a globe, s/he will accept that both are legitimate ways to view Earth. This is the same principle that follows Western media and their coverage of terrorism. The U.S. media continues to remain loyal to a deceitful standard of terrorism, presenting the entire country with an invalid perception of terrorism in the Middle East. This coverage reaches all demographics nation wide and raises aRead MoreLife On Screen By Sherry Turkle933 Words   |  4 Pagesrelaxation or catharsis. Each social media account consists of carefully curated and mediated content with the intention of portraying a fragmented or pseudo personality to the masses. Web 2.0 changed our status as audiences and consumers, enhancing creativity and individualism in contrast to traditional media that encouraged mass culture and passivity. For once, the audience and consumer have control of the narrative and whether a person uses social media to keep in contact with family and friendsRead MoreThe Cnn Effect : An Exploration Of How The International Media1732 Words   |  7 PagesOF HOW THE INTERNATIONAL MEDIA ‘DRAGGED’ AMERICA TO SOMALIA POST 1991 BACKGROUND Mass communication is the process which public messages are transmitted and are directed at large audiences with different values not found at a particular place but in different places. In the media arena globalisation refers to worldwide distribution of the same programme content and the distribution of special interest information that is aimed at a globally dispersed minority audience (Wall, 2009). The backgroundRead MoreTransnational Cinema And Its Impact On The World1446 Words   |  6 Pagesimaginary illustrations of the world in each individual’s mind. Additionally, because of the rapid development of information technology, the information is transmitted simply and promptly across the globe through the media (Smith and Hendricks, 2010). It is notable that the media is playing an increasingly vital role in the process of constituting and amplifying the imagined worlds. Transnational cinema can be taken for a prime example of mediascapes through which the current world is being imaginedRead MoreTelevision, Television And The Internet1399 Words   |  6 Pages24-hour news outlets. Throughout the years, media outlets have gone above and beyond relaying international political coverage—media conglomerates have begun covering humanitarian crisis, social movements, and popular culture through the â€Å"infotainment† channels. With visual mediums, news chann els and news outlets are influential in creating images and stories for spectators to consume. The development of these images tells stories and draw frameworks for audiences to evaluate and make sense of the worldRead MoreGlobalization Of The South : An Emerging Western Source Of International News Services1674 Words   |  7 PagesThere companies generate counterflows which enter non-Western as well as Western societies from non-Western sources, what results in counter-hegemonic globalisation. For example, Al-Jazeera, an emerging non-Western source of international news from a region that lacks adequate coverage by Western news services, has gradually weakened the old Western-dominated centre-periphery system by facilitating a cross culture dialogue (Samule-Azran, 2010). However, many scholars view Al-Jazeera as an exceptionRead MoreKey Elements Of Orientalism In Aladdin956 Words   |  4 Pagesbelieves the East is to be feared. I will explore the key elements of Orientalism and explain how this functions in the film Aladdin (Ron Clements, John Musker: 1992). In Aladdin, there are distinctive differences between the ‘East’ and the ‘West’ which Said states, creates binary oppositions between them. This is demonstrated through the exploration of characters Aladdin and Jaffar. The key elements of Orientalism I will be exploring are: representations of race, sexualisation of the Orient and the exoticisationRead MoreBollywood Is The Biggest Film Industry In India, But Is1123 Words   |  5 PagesBollywood was born at the same time as Indian cinema itself. By the 1930s, Bollywood had already built several studios which, 10 years later, had produced approximately two-thirds of Bollywood’s 150–200 annual films. The name Bollywood comes from the American from Hollywood, the B is there for Bombay (now know as Mumbai). A typical Bollywood movie lasts for two-and-a-half hours, it has slowly unrolling storylines of epic proport ions, usually incorporating the break-ups and make-ups. Film directors likeRead MoreSouth Park Is The Third Longest Running Animated Series1636 Words   |  7 Pagesevents, in which create a lot of controversies on political, social and religions context. The following content will analysis â€Å"South Park† in the aspect of circuit of culture. Production South Park is first on air on Comedy Central, which is an American basic cable and satellite television channel that is owned by Viacom, which is one of the world’s sixth largest broadcasting and cable company in terms of revenue. Viacom having numbers of subsidiaries in New Zealand, and several countries throughoutRead MoreThe Impact Of Media Coverage On Public Perception1701 Words   |  7 Pagesoccurrences that unfold in the Middle East: all extremely tragic events, all terrorist attacks, all receiving little to zero coverage through Western media. Media coverage impacts public perception, it influences the how people â€Å"learn, understand, and think about an issue† (Powell, 2011). At the University of Illinois-Urbana Champaign, students consume Western media in all types of forums. But exposure of angled content can create a very specific viewpoint on a global issue that requires perspectives

Sunday, December 15, 2019

Specialty of Yellow Sapphires Free Essays

Yellow sapphire ring Long gone are the times when blue was the only color associated with sapphires. With every leap mankind has taken, new wonders in every field have come to the forefront, yellow sapphire being one of them. Cheerful, sunny Yellow is synonymous with success, self confidence and power. We will write a custom essay sample on Specialty of Yellow Sapphires or any similar topic only for you Order Now Universally, yellow sapphire rings are worn for therapeutic, medical and spiritual reasons . The power of yellow sapphires is such that it is reported that by wearing it the girl of your dreams will become yours truly and if girls wear it they will find their true prince charming. The history of yellow sapphires is very interesting. For ages, the inside people of gem trade guarded its existence and found this magnificent stone worthy of nobody less than royalty. Considered to be the safest stone in gem industry for its neutral effects on the people with which it has least compatibility and exceeding effects on those it suits, it is the most valuable gem, coming second only to the diamonds. In fact the diamonds and sapphires are very much alike in appearance and luster. It is the unique chemical structure of each which sets them apart. It is often said that a naked human eye can’t easily distinguish between these two beauties. Like diamonds, sapphires also exist in various hues and shades, depending on the type of impurity impregnating its internal structure. After chemically analyzing it, it has been found that iron, aluminum and florin are present in it. The yellow sapphires were originally found in the lands of Srilanka and India. In several cultures all over the world, yellow sapphires have great astrological significance. Wearing a large yellow sapphire ring brings peace, good luck and prosperity. It is the symbol of wisdom and wit. It exudes a calmness and serenity which enables the wearer to deal with his day to day activities with the attitude of a winner. Apart from this, ladies will agree that wearing unique, eye catching and one of its kind yellow sapphire rings will no doubt add an extra oomph to their outfit and personality and give it a warm accent on grayest of the days. You can always ear a small, delicate ring with formal attire or a large, eye catching piece on fancy occasions and be the centre of attention. Additionally, different colored sapphires can all be worn simultaneously depending on the mood and they will still look beautiful. Sapphires are often confused with the mood identifying opals because they have the ability to change color based on the intensity of light they are exposed into. Yellow, green, pink, violet, blue and purple are just some colors which these sapphires can sh ow. The color changing ability has nothing to do with the change in mood in fact it’s the following three factors which play a major role in the color changing abilities of sapphires. Hue: The hue is what you see as the color. Saturation: The saturation describes the brightness or vividness of the color. Tone: The tone refers to the darkness or lightness of the color. Yellow sapphires are found in a range of hues from smooth transparent light yellow to deep greenish yellow and orange yellow. Sometimes the yellow in these sapphires can be so pale that it can be deemed as a transparent white sapphire. Deep golden sapphires with a tint of orange in them are considered to be the finest type of yellow sapphires. The deeper the color of the stone the more it is valuable. Mostly these gem stones are cut in oral shapes with multiple facets to retain maximum weight of the stone and highlight inclusions like feather, color zoning, crystals or the natural fissures etc Because of their distinctive value in history, these stones are favored by men and women all over the world. Buying yellow sapphire rings is a safe bet as they are astrologically suited to every kind of nature and make for wonderful rings to celebrate your past, present and future with your loved one. Distinctive yellow engagement sapphire rings look bedazzling, are durable and are marked with the power of creating harmony and affection in a relationship. Indeed, Princess Diana herself received one of the most exquisite sapphire ring on her engagement. In meticulous cuts, brilliant hues and its shimmering beauty yellow sapphire rings will be undoubtedly an unparalleled addition to your jewelry collection. How to cite Specialty of Yellow Sapphires, Essay examples

Saturday, December 7, 2019

The Lottery vs Harrison Bergeron free essay sample

Traditions tend to make you do what everyone else in your society is doing. Both of the tragic stories â€Å"The Lottery†, and â€Å"Harrison Bergeron† teach about how society tends to conform to certain traditions or ways of being, no matter how gruesome. Their societies conform to such bizarre traditions, in fear of what might happen to them if they do not comply year after year. These stories have some similarities, but also have many differences, for example, the setting. The setting of â€Å"The Lottery† is set in the past, around 1948 in a small village of around 200 people, who are a little more barbaric than nowadays. The setting of â€Å"Harrison Bergeron† takes place around 2080, in Middle America. In both stories, the main character gets punished for going against their society’s way of life, and both die while their families watch. Although people today may think that the people and societies in these stories are doing is crazy, but in reality our societies today do not differ in the sense that we are fighting for equality. We will write a custom essay sample on The Lottery vs Harrison Bergeron or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page But fighting for equality may not be what we should be doing. After all, wouldn’t it be bland and no interesting things going on in the world if we were all the same? In â€Å"The Lottery†, each year, everyone in the village is counted for, and the head of the village makes a blank slip of paper for everyone in the village, except one of the papers has a black dot in the middle of it. They put them all in a box, and the next morning, everyone comes to the meeting point in the village, and all of the men of the houses pull a piece of paper out. The family that draws out the paper with a black dot will have one of their family members stoned to death. Even though they may not want to run the society this way, they are afraid to change the ways that their ancestors have lived, and by changing their lifestyle will cause even more problems. In â€Å"Harrison Bergeron†, anyone that had a talent above or below the average was given a handicap to make them equal to everyone else. Those handicaps would either increase their abilities, or decrease them to the average human’s. They may have not liked the way that they were using handicaps against them, but they did not go against it, because it was making the society equal for the better.

Saturday, November 30, 2019

Pressure distribution on an ellipto-zhukovsky aerofoil Essay Example

Pressure distribution on an ellipto-zhukovsky aerofoil Paper The pressure distribution around an Ellipto Zhukovsky aerofoil with a chord of 254 mm at a range of angles of attack (-4? , 7? and 15? ) was determined and pressure contributions to lift were evaluated in a T3 wind tunnel at City University. This was carried out at a chord Reynolds number of 3. 9 x 105. Graphs for lift and pitching moment coefficients were plotted against angles of attack. A graph for Cm and Cl was also plotted from which the aerodynamic centre was determined to be 23. 7%. The value of lift curve slope was determined to be 4. 4759. Hence the value of k (the ratio of the actual lift curve slope to the theoretical one) for this aerofoil was determined to be 0. 917. The value of Cmo was also found to be 0. 0172. Specimen calculations for 15 degrees angle of attack can be found in the appendix section. LIST OF SYMBOLS Cp Pressure Coefficient Cpu Pressure Coefficient of upper surface Cpl Pressure Coefficient of lower surface Cl Lift Coefficient Cm Moment Coefficient x/c Position of pressure tapping on aerofoil divided by chord length Px Pressure at tapping x (Pa) Patm Atmospheric Pressure (Pa) ? Density of air (kg/m3) i Dynamic viscosity ? Kinematics viscosity (m/s2) We will write a custom essay sample on Pressure distribution on an ellipto-zhukovsky aerofoil specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Pressure distribution on an ellipto-zhukovsky aerofoil specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Pressure distribution on an ellipto-zhukovsky aerofoil specifically for you FOR ONLY $16.38 $13.9/page Hire Writer h Digital manometer reading ? angle of which manometer is inclined D or t Diameter of cylinder (mm) h tunnel height (mm) V Velocity of air flow (m/s) R Molar gas constant (J/kg. K) T Temperature (K) Re Reynolds Number INTRODUCTION An airfoil is any part of an airplane that is designed to produce lift. Those parts of the airplane specifically designed to produce lift include the wing and the tail surface. In modern aircraft, the designers usually provide an airfoil shape to even the fuselage. A fuselage may not produce much lift, and this lift may not be produced until the aircraft is flying relatively fast, but every bit of lift helps. The first successful aerofoil theory was developed by Zhukov sky and was based on transforming a circle onto an aerofoil-shaped contour. This transformation gave a cusped trailing edge, and so the transformation was modified to obtain a slender semi-eclipse trailing edge, which gave rise to the name Ellipto Zhukovsky. When a stream of air flows past an aerofoil, there are local changes in velocity around the aerofoil, and consequently changes in static pressure in accordance with Bernoullis theorem. The distribution of pressure determines the lift, pitching moment, form drag, and centre of pressure of the aerofoil. In our experiment we are concerned with the effect of pressure distribution on lift, pitching moment coefficient (Cm), and centre of pressure. The centre of pressure can be defined as the point on the aerofoil where Cm is zero, and therefore the aerodynamic effects at that point may be represented by the lift and drag alone. A positive pressure coefficient implies a pressure greater than the free stream value, and a negative pressure coefficient implies a pressure less than the free stream value (and is often referred to as suction). Also, at the stagnation point, Cp has its maximum value of 1 (which can be observed by plotting Cp against x/c). Zhucovsky claimed that the aerofoil generates sufficient circulation to depress the rear stagnation point from its position, in the absence of circulation, down to the (sharp) trailing edge. There is sufficient evidence of a physical nature to justify this hypothesis and the following brief description of the Experiment on an aerofoil may serve helpful. The experiment focuses on the pressure distribution around the Zhucovsky airfoil at a low speed and the characteristics associated with an airfoil:  coefficient of lift,   coefficient of pitching moment   and centre of pressure. The airfoil is secured to both sides of the wind tunnel with pressure tappings made as small as possible not to affect the flow,(appendix- photo 1 . The pressure difference around the airfoil is measured with twenty-five manometer readings which are recorded for each angle of attack. The manometer fluid is alcohol and has a specific gravity of 0. 83 and inclined at an angle of 30 degrees. Tube 1 is left open to atmospheric pressure, while tubes 2-13 are the lower surface of the airfoil and tubes 14-24 are the upper surface of the airfoil. The pressure tapings are positioned on the airfoil at a distance x/c, noted in the results table and tube 35 is the static pressure of the wind tunnel. The dynamic pressure is given by a digital manometer. The digital readout results were used for all calculations because they are more precise. Results Raw data and calculated values for x/c, Cp and Cp(x/c) can be found in the appendix. Graphs of Cp against x/c for angles of attack -4, 7, and 15 degrees can be also be found in the appendix. These graphs determine the lift coefficient. Counting the squares method was used to determine the values of Cl. Graphs of Cp*(x/c) against x/c for angles of attack -4, 7, and 15 degrees can be also be found in the appendix. These graphs determine the pitch moment coefficient. Counting the squares method was used to determine the values of Cm. Graphs of Cl against angle of attack ,Cm against angle of attack, and Cm against Cl can be found in the appendix. Also below is a summary of the results: Angle of Attack (degrees) Cl Cm -4 -0. 513 0. 153 7 0. 740 -0. 166 15 0. 946 -0. 183 Discussion The experiment was conducted in a low speed, closed wind tunnel, operating at approximately 50% of its speed. The aerofoil was mounted in the wind tunnel and its pressure tapings connected to a manometer inclined at 30 degrees to the horizontal. The height of the liquid in each manometer tube represented the pressure acting on each of the aerofoil tapings. The pressure in the working section, and the pressure at the venturi inlet were taken into account, and a resulting wind tunnel velocity was displayed on a digital manometer. The Reynolds number was calculated (see appendix. Values of Cl and Cm for other angles of attack were obtained from other groups conducting the experiment, and were used to obtain more accurate graphs. It was also found that the slope of the Cl against angle of attack graph was 4. 4759, which was not relatively close to the theoretical value of 7. 105. The aerodynamic centre was calculated at 23. 7% of the chord length (from the slope of the Cm against Cl graph). It was found that the lift increased with angle of attack, up to a point where the aerofoil experiences stall, and a dramatic loss of lift occurs. As there was little change in the lower surface pressure distribution, the lift was mainly generated due to the upper surface suction. As the angle of attack increases, the height of the upper surface suction peak should increase, and move forward, indicating that the centre of pressure is moving forward. However, experimentally this was not prominent, and can be attributed to a possible disturbance in the pressure distribution around the aerofoil. At zero degrees angle of attack, for a symmetrical aerofoil, lift and Cm should equal zero. The reason that they were not zero means that the aerofoil must have had a very small angle of attack. The discrepancy between the theoretical and experimental value of lift curve slope is due to boundary layer effects, and the effect of the thickness of the aerofoil, and thus the theoretical value needs to be multiplied by the k value (=0. 917) to obtain the experimental result. Conclusion The aim of the experiment was achieved with a relatively good level of experimental accuracy. The pressure distribution over an aerofoil contributes towards the lift and pitching moment coefficient, where the increase in suction on the upper surface (due to an increased angle of attack) increases the lift, and pitching moment coefficient. The variation of pressure distribution also affects the location of the centre of pressure. The factors which affected the pressure distribution, were mainly the thickness and the Reynolds number. However, when it comes to comparing the results with their theoretical values it is clear to see that there have been significant errors have occurred in the experiment. These are listed below. Human errors in reading of the manometer tubes. Where several people were involved and this led to different techniques being used it would have been best for everyone to take their own set of readings and the average value calculated using all the data. The most common error without ant doubt was parallax and this could have been avoided by using digital measuring devices. Calculation errors i. e. rounding off, conversion error and error occurring when the area under the graphs was calculated for the coefficient of lift.   Experimental errors some of the tapping may have been defective and not enough tapping were provided. Also to obtain a better lift curve slope there should have more angles of attack. Also any obstructions in front of the wind tunnel such as people would create unnecessary turbulence inside the wind tunnel. Appendix Specimen Calculations.

Tuesday, November 26, 2019

How to Get Out of the Sophomore Slump

How to Get Out of the Sophomore Slump In your sophomore year in college? Feeling uninspired and unmotivated? You just might be in whats known as the college sophomore slump. For most students, its what happens during your second year of college: youre over the excitement of your first year but not close enough to graduating yet to be focusing on life after college. So whats a college student to do in the meantime? Take a Class for Fun You might be feeling slumpish because you are having to take tons of prereqs before you can get into the nice, meaty courses required for your major. Or you may not even be sure what to major in. Either way, add a little spice to your routine by taking a class just for fun. It can be yoga, ballet, an art class, or anything thats out of the ordinary for you. Join a New Club or Organization Your first year in school, you were probably so busy adjusting to life as a college student that your time management skills were shall we say less than stellar. But now that you know the ropes, join a new club or organization that will provide you with a creative outlet and something enjoyable to do each week. Get Involved in Student Government Even if youve never done student government before, see if you can represent your residence hall, your academic class, or even a constituency you belong to (like transfer students, for example). It can be a great way to keep you motivated to talk to other students, stay on top of current issues, and develop some leadership skills. (Not to mention that it looks good on your resume.) Volunteer on Campus No matter where you go to school, chances are that there is some kind of volunteer program you can join. See who needs volunteers this year and you just might end up motivating yourself along with others. Volunteer in the Local Community Maybe a change of scene is more whats needed. If so, see what volunteer options are available in your local community. Mentor First-year Students You just might be in the sophomore slump because you are doing well in college which means that perhaps you can be a good role model for incoming first-year students who need some guidance about adjusting to college life. See if your school has a mentoring program you can join and if not, see about starting one yourself! Get a Fun Job On Campus True, most students work in college for the money. But if you need to mix things up a little, this can be a great way to still get income while also enjoying yourself. Work in the campus coffee shop, at the theater, or in any other avenue that offers a fun, engaging environment. Get a Fun Job Off Campus Perhaps you do need a change of scene from your campus but dont have the time to volunteer. Try to combine both your financial needs and your need for change into an off-campus job that is interesting and something new. Get Involved Politically What are local politics like near your school? Can you volunteer on someones campaign? Join a national campaign for a person or an issue you care about? Become involved in a movement for a cause that is near and dear to your heart? Start Planning a Great Trip Sophomore year can be a little challenging because there often isnt one big thing to look forward to. So why not create your own highlight of the year? See what your options are for planning a fun trip over Thanksgiving break, winter break, spring break, or even a long weekend coming up. It just might do the trick of getting you out of your sophomore slump and back into your normal groove.

Friday, November 22, 2019

Biology Aqa

16. 8 – Genetic fingerprinting43 Section 9. 1 – Sensory Reception †¢ A stimulus is a detectable change in the internal or external environment of an organism that produces a response. The ability to respond to a stimulus increases an organism’s chances of survival. †¢ Receptors transfer the energy of a stimulus into a form that can be processed by the organism and leads to a response. †¢ The response is carried out by â€Å"effectors† which can include cells, tissues, organs and systems. Taxis – A simple response that’s direction is determined by the direction of the stimulus An organism can respond directly to a change in the environment by moving its body either: 1. Toward the stimulus (positive taxis) 2. Away from the stimulus (negative taxis) Kinesis – Results in an increase of random movements †¢ Organism does not move towards/away from the stimulus †¢ The more intense the stimulus the more rapid the movements †¢ Kinesis is important when the stimulus is less directional such as heat or humidity Tropism – a growth movement of part of a plant in response to a directional stimulus Positive phototropism – shoots/leaves Positive Geotropism – roots Section 9. 2 – Nervous Control Nervous organisation The nervous system can be thought of as having two main divisions: . The central nervous system (CNS) – brain and spinal cord 2. The peripheral nervous system (PNS) – Made up of pairs of nerves that originate either from the brain or the spinal cord The peripheral nervous system This is divided into: †¢ Sensory neurons which carry impulses away from receptors to the CNS †¢ Motor neurons which carry nervous impulses from the CNS to effectors The spinal cord is a column of nervous tissue A reflex – involuntary response to a stimulus (you do stop to consider an alternative) The pathway of neurons involved in a reflex is called a reflex arc. Reflex arcs contain just 3 neurons: 1. A sensory neuron 2. An intermediate neuron 3. A motor neuron There are several stages of a reflex arc: 1. Stimulus 2. Receptor 3. Sensory neuron 4. Synapse 5. Coordinator (intermediate neuron) 6. Synapse 7. Motor neuron 8. Effecter 9. Response Importance of the reflex arc †¢ Involuntary – does not require the decision making power of the brains †¢ Brain can override the response if necessary †¢ Protects the body from harmful stimuli Effective from birth – does not need to be learnt †¢ Short pathway – fewer synapses Synapses – slow Neurons – fast Section 9. 3 – Control of heart rate The Autonomic nervous system Controls subconscious activities of muscles and glands Has two main divisions: The sympathetic nervous system – Speeds up activities and thus allows us to cope with stressful situations (fight or flight r esponse) The parasympathetic nervous system – Inhibits effects and slows down activities. This allows energy to be conserved. Controls under normal resting conditions The two divisions are antagonistic meaning that their effects oppose one another Control of heart rate Changes of the heart rate are controlled by a region of the brain called the medulla oblongata which has two main divisions One division is connected to the sinoatrial node through the sympathetic nervous system The other is connected to the sinoatrial node via the parasympathetic nervous system Control by chemoreceptors Chemoreceptors are found in the wall of the carotid arteries and detect hanges in pH as a result of CO2 concentration When CO2 concentration in the blood is too low, chemoreceptors detect the drop in pH and send impulses to the section of the medulla oblongata responsible for increasing heart rate This section then increases the number of impulses sent to the S. A node via the sympathetic nervous system This results in an increase in heart rate which then causes blood pH to return to normal. Control by pressure receptors Pressure receptors occur in the wall of the carotid arteries and the aorta When blood pressure is too high – impulses are sent to the medulla oblongata which then sends impulses to the S. A node via the parasympathetic nervous system decreasing the heart rate When blood pressure is too low – impulses are sent to the medulla oblongata which then sends impulses to the S. A node via the sympathetic nervous system, increasing the heart rate Section 9. 4 – Role of receptors Features of sensory reception A sensory receptor will: †¢ Only respond to a specific type of stimulus (e. g. light, pressure, etc) †¢ Produce a generator potential by acting as a transducer. This means that it can convert the information to a form that the human body can interpret. This is achieved by using the energy of a stimulus into a nerve impulse called a generator potential. Structure and function of a pacinian corpuscle Responds to mechanical pressure Occurs in ligaments and joints so that it is possible to tell which direction a joint is changing The neuron of a pacinian corpuscle is in the centre of layers of tissue, each separated by gel The sensory neuron of a pacinian corpuscle has stretch-mediated sodium channels in its plasma membrane †¢ During its resting state, stretch-mediated sodium channels are too narrow to allow sodium through. The corpuscle therefore has a resting potential †¢ When pressure is applied, the membrane of the neuron is stretched causing sodium channels to widen therefore allowing sodium to diffuse into the neuron †¢ The influx of sodium ions cause a change in the polarity of the neuron, creating a resting potential †¢ The generator potential creates a action potential which moves along the neuron Receptors working together in the eye Different receptors respond to a different intensity of a stimulus Light receptors of the eye are found in the retina (the inner most layer) The light receptors in the eye can are of two types, rod and cone cells. Both receptors convert light energy into a nervous impulse and are therefore acting as transducers Rod cells Cannot distinguish between different wavelengths Many rod cells are connected to the same neuron and so can function at low light intensities. A threshold must be reached in the bipolar cells to which they are attached to and so since they can all contribute to reaching this threshold, they will function at lower light intensities Rod cells breakdown the pigment rhodopsin to generate an action potential. Rhodopsin is easily broken down in low light intensity Since more that one rod cell is connected to the same neuron, only one impulse will be generated. It is impossible for the brain to determine which rod cells were stimulate to begin with and so it is not possible to determine exactly the source of light This results in rod cells having a relatively poor visual acuity and so are not very effective in distinguishing between two points close together Cone cells There are three types of cone cells, each of which respond to a different avelength The colour interpreted depends of the proportion of each type of cone cell stimulated Cone cells are connected only to one bipolar cells, this means that they cannot combine to reach a threshold. As a result of this a high light intensity is required to create a generator potential Cone cells breakdown the pigment iodopsin to create a generator potential Iodopsin can only be broken down by a high light intensity Since cone cells are connected to a single bipolar cell, when two adjacent cells are stimulated, two separate nervous impulses will be sent to the brain. This means that it is easier to determine the source of the light. As a result, cone cells are responsible for higher visual acuity since they allow you to better distinguish between two points Light is concentrated by a lens to the centre of the eye called the fovea. This region receives a high light intensity and therefore has more cone cells. The peripheries of the eye receive a low light intensity and therefore consist mainly of rod cells. Section 10. 1 – Coordination Body systems cannot work in isolation and must therefore be integrated in a coordinated fashion. Principles of coordination In mammals, there are two main forms of coordination: 1. The nervous system – Uses nerve cells that can pass electrical impulses along their length. The result is the secretion of chemicals by the target cells called neurotransmitters. The response is quick, yet short lived and only acts on a localised region of the body. 2. The hormonal system – Chemicals are transported in the blood plasma which then reach target certain cells, thus stimulating them to carry out a function. The responses due to secretion of hormones often act over a longer period of time, yet are slower to act. Chemical mediators Nervous and hormonal forms of communication are only useful at coordinating the activities of the whole organism. At the cellular level they are complimented by chemical mediators. Chemical mediators are secreted by individual cells and affect other cells in the immediate vicinity. A common example of this type of coordination is the inflammation of certain tissues when they are damaged or exposed to foreign agents. Two examples of chemical mediators are: 1. Histamine – Stored in white blood cells and is secreted due to the presence of antigens. Histamine causes dilation of blood vessels, increased permeability of capillaries and therefore swelling the infected area. 2. Prostaglandins – Found in cell membranes and cause dilation of small arteries and arterioles. They release due to injuries and increase the permeability of capillaries. They also affect blood pressure and neurotransmitters. In doing so they relieve pain. Hormonal system |Nervous system | |Communication by chemicals |Communication by nervous impulses | Transmission takes place in the blood |Transmission is by neurons | |Transmission is generally slow |Transmission is very rapid | |Hormones travel to all areas of the body, but target only |Nerve impulses travel to specific areas of the body | |certain tissues/organs | | |Response is widespread |Response is localised | |Effect may be permanent/long lasting/ irreversible |Effect is temporary and reversible | Plant growth factors Plants respond to external stimuli by means of plant growth factors (plant hormones) Plant growth factors: †¢ Exert their influence by affecting growth †¢ Are not produced by a particular organ, but are instead produced by all cells †¢ affect the tissues that actually produce them, rather than other tissues in a different area of the plant. One plant hormone called indoleacetic acid (IAA) causes plant cells to elongate Control of tropisms by IAA IAA is used to ensure that plant shoots grow towards a light source. 1. Cells in the tip of the shoot produce IAA, which is then transported down the shoot. 2. The IAA is initial transported to all sides as it begins to move down the shoot 3. Light causes the movement of IAA from the light side to the shaded side of the shoot. 4. A greater concentration of IAA builds up on the shaded side of the shoot 5. The cells on the shaded side elongate more due to the higher concentration of IAA 6. The shaded side of the root therefore grows faster, causing the shoot to bend towards the source of light IAA can also effect the bending of roots towards gravity. However in this case it slows down growth rather than speeds it up. IAA decreases root growth and increases shoot growth Section 10. 2 – Neurons Specialised cells adapted to rapidly carry electrochemical changes (nerve impulses) from part of the body to another Neuron structure Cell body †¢ Nucleus †¢ Large amounts of rough endoplasmic reticulum to produce neurotransmitters Dendrons †¢ Extensions of the cell body sub-divided into dendrites †¢ Carry nervous impulses to the cell body Axon †¢ A single long fibre that carries nerve impulses away from the cell body Schwann cell †¢ Surrounds the axon †¢ Protection/electrical insulation/phagocytosis. Can remove cell debris and are associated with nerve regeneration. Myelin sheath †¢ Made up from the Schwann membrane which produces myelin (a lipid) †¢ Some neurons are unmyelinated and carry slower nerve impulses Nodes of Ranvier †¢ The gaps between myelinated areas †¢ 2 – 3 micrometers long and occur every 1 – 3mm Sensory Neuron †¢ Transmit impulses from a receptor to an intermediate neuron or motor neuron †¢ One Dendron towards the cell body, one axon away from the cell body Motor neuron †¢ Transmit impulses from the sensory/intermediate neuron to an effector †¢ Long axon, many short dendrites Intermediate neuron †¢ Transmit impulses between neurons †¢ Numerous short processes Section 10. 3 – The nerve impulse A nerve impulse is not an electrical current! It is a self-propagating wave of electrical disturbance that travels along the surface of an axon membrane. Nerve impulse – temporary reversal of the electrical p. d across an axon membrane The reversal is between two states The resting potential no nerve impulse transmitted The action potential – nerve impulse transmitted Resting potential †¢ Sodium/potassium are not lipid soluble and cannot cross the plasma membrane. Transported via intrinsic proteins – ion channels †¢ Some intrinsic proteins actively transport potassium ions into the axon and sodium ions out. This is called the sodium potassium pump. Sodium potassium pump 3 sodium ions pumped out for every 2 potassium ions pump in †¢ Most gated potassium channels remain open – potassium ions move out of the axon down their chemical gradient †¢ Most gated sodium channels remain closed The action potential †¢ Temporary reversal of the charge of the membrane from (-65mV to +65mV). When the p. d is +65mV the axon is said to be depolarised †¢ Occurs because the ion channels open/close depending upon the voltage across the membrane †¢ When the generator potential is reached, sodium ion channels open and potassium close, allowing sodium to flood into the axon. Sodium being positively charged causes the axon to become more positive in charge The passage of an action potential along an unmyelinated axon †¢ Stimulus – some voltage – gated ion channels open, sodium ions move in down electrochemical gradient †¢ Causes more sodium channels to open †¢ When the action potential reaches ~ +40mV sodium channels close †¢ Voltage – gated potassium channels open and begin repolarisation of the axon Hyper – polarisation †¢ The inside of the axon becomes more negative than usual due to an â€Å"overshoot† in potassium ions moving out of the axon. †¢ Potassium channels close †¢ Sodium potassium pump re-established the -65mV resting potential Section 10. 5 – The speed of a nerve impulse Factors affecting speed 1. The myelin sheath – Prevents the action potential forming in myelinated areas of the axon. The action potential jumps from one node of Ranvier to another (salutatory conduction) – this increases the speed of the impulse as less action potentials need to occur 2. The greater the diameter of the axon the greater the speed of conductance – due to less leakage of ions from the axon 3. Temperature – Higher temperature, faster nerve impulse. Energy for active transport comes from respiration. Respiration like the sodium potassium pump is controlled by enzymes. Refractory period After an action potential, sodium voltage-gated channels are closed and sodium cannot move into the axon. It is therefore impossible during this time for a further action potential to be generated. This time period, called the refractory period serves two purposes: It ensures that an action potential can only be propagated in one direction – An action potential can only move from an active region to a resting region. It produces discrete impulses – A new action potential cannot be generated directly after the first. It ensures action potentials are separated from one another. It limits the number of action potentials – action potentials are separated from one another, therefore there is a limited amount that can pass along a neuron in a given time. All or nothing principle Nervous impulses are all or nothing responses A stimulus must exceed a certain threshold value to trigger an action potential A stimulus that exceeds the threshold value by a significant amount, will produce the same strength of action potential as if it has only just overcome the threshold value A stimulus can therefore only produce one action potential An organism can perceive different types of stimulus in two ways: The number of impulses in a given time (larger stimulus, more impulses per second) Having neurons with different threshold values – depending on which neurons are sending impulses, and how frequently impulses are sent, the brain can interpret the strength of the stimulus Section 10. 6/10. 7 – Structure and function of the synapse / Transmission across a synapse A synapse occurs where a dendrite of one neuron connects to the axon of another Structure of a synapse Synapses use neurotransmitters to send impulses between neurons The gap between two neurons is called the synaptic cleft The neuron that produces neurotransmitters is called the presynaptic neuron The axon of the presynaptic neuron ends in a presynaptic knob The presynaptic knob consists of many mitochondria and endoplasmic reticulum These organelles are required to produce neurotransmitters which are stored in synaptic vesicles Synaptic vesicles can fuse with the presynaptic membrane releases the neurotransmitter Functions of synapses †¢ A single impulse from neuron can be transmitted to several other neurons at a synapse. This means that one impulse can create a number of simultaneous responses †¢ A number of different impulses can be combined at a synapse. This means that several responses can be combined to give on single response Neurotransmitters are made in the presynaptic cleft only When an action potential reaches the presynaptic knob, it causes vesicles containing the neurotransmitter to fuse with the presynaptic membrane The neurotransmitter will the diffuse across the synaptic cleft The neurotransmitter then bind with receptors on the postsynaptic membrane, in doing so generating a new action potential in the postsynaptic neuron Features of synapses Unidirectionality Impulses can only be sent from the presynaptic membrane to the postsynaptic membrane Summation †¢ Spatial summation Different presynaptic neurons together will release enough neurotransmitter to exceed the threshold value to form an action potential †¢ Temporal summation – One neuron releasing neurotransmitter many times over a short period. Eventually the neurotransmitter will accumulate so as to overcome the threshold value of the postsynaptic membrane. Therefore generating a new action potential Inhibition Some postsynaptic membranes have protein channels that can allow chloride ions to diffuse into the axon making it more negative than usual at resting potential. This type of hyperpolarisation inhibits the postsynaptic neuron from generating a new action potential. The importance of these inhibitory synapses is that it allows for nervous impulses to be controlled and stopped if necessary Transmission across a synapse When the neurotransmitter across a synapse is the chemical acetylcholine it is called a cholinergic synapse Acetylcholine is made up of acetyl (ethanoic acid) and choline Cholinergic synapses are more common in vertebrates Cholinergic synapses occur in the central nervous system and at neuromuscular junctions 1. When an action potential reaches the presynaptic knob, calcium channels open allow calcium to diffuse into the presynaptic knob 2. The influx of calcium ions causes presynaptic vesciles containing acetylcholine to fuse with the presynaptic membrane, releasing the neurotransmitter into the synaptic cleft 3. Acetylcholine diffuses across the cleft and fuses with receptor sites on sodium channels found on the presynaptic membrane. When they do so, the sodium channels open, allowing sodium ions to diffuse along their concentration gradient into the postsynaptic knob. 4. The influx of sodium ions, generates a new action potential in the postsynaptic neuron 5. Acetylcholinesterase hydrolyses acetylcholine back into the acetyl and choline which will the diffuse back across the synaptic cleft into the presynaptic neuron. In this way acetylcholine can be recycles and reused and also is prevented from continuously generating new action potentials on the postsynaptic neuron. 6. ATP is released by mitochondria, providing energy to recombine acetyl and choline. Sodium channels on the postsynaptic membrane are now closed due to the absence of acetylcholine attached to receptor sites. Section 11. 1 – Structure of skeletal muscle There are three types of muscle in the body: Cardiac muscle which is found only in the heart Smooth muscle which is found in the walls of blood vessels Skeletal muscle which is attached to bone and is the only type of muscle under conscious control Muscles are made up of many muscle fibres called myofibrils If the cells of muscles were joined together from the end of one cell to another, the point between cells would be a point of weakness Because of this, the muscle cells are fused together into muscle fibres Cells of the same myofibrils share the same nuclei as well as cytoplasm (sarcosplasm). Within the sacroplasm are many mitochondria as well as endoplasmic reticulum Microscopic structure of skeletal muscle Myofibrils are made up of two types of protein filament Actin – thinner, consists of two strands twisted around each other Myosin – thicker and is made up of long rod shaped fibres with bulbous heads projecting outwards Myofibrils have coloured bands The isotropic (I) bands appears lighter since it consists only of actin (no overlap) The anisotropic (A) bands are darker since this is where acting and myosin overlap The H zone is the region in the centre of the sarcomere that is lighter in colour since there is only myosin The z line lies at the centre of the I bands Types of muscle fibre Slow-twitch fibres – Contract more slowly, less powerful. Adapted for endurance/aerobic respiration so less lactic acid forms Adaptations include: Large store of myoglobin, Supply of glycogen, Rich supply of blood vessels, Numerous mitochondria Fast-twitch – Contracts more rapidly with more power but only for a short period of time. Adapted for intense exercise by: Having hicker and more numerous myosin filaments, having a high concentration of enzymes used for anaerobic respiration, a large store of phosphocreatine to provide phosphate to make ATP Neuromuscular junctions Many neuromuscular junctions are spread through the muscle for simultaneous contraction Each muscle fibre has one motor neuron associated with it. The muscle fibre and the neuron make up one motor unit When only a small force is needed only a few motor units are stimulated When a nerve impulse reaches the neuromuscular junction, the synaptic vesicles join with the presynaptic membrane and release acetylcholine which diffuses across to the postsynaptic membrane and stimulates it to allow sodium ions to enter. The acetylcholine is then broken down by Acetylcholinesterase and then diffuses back into the presynaptic neuron. Section 11. 2 contraction of skeletal muscle During muscle contract, actin and myosin slide past each other; hence its name the sliding filament mechanism Evidence for the sliding filament mechanism When a muscle contract, the following changes occur to the sarcomere: The I band becomes narrower The z lines move close to one another The h band becomes narrower The a band does not change as this band is determined by the width of the myosin Myosin is made up of two different types of protein 1. A fibrous protein arranged into the filament called the tail 2. A globular protein that forms a head at each end Actin is a globular proteins thats molecules are arranged into two chains that twist around each other in a helical manner Tropomyosin forms long thin stands that s wound around the actin molecule The process of muscle contraction has a three main stages: Stimulation, contraction and relaxation Muscle stimulation When an action potential reaches the neuromuscular junctions, Calcium ion channels open and calcium ions move into the synaptic knob The Calcium ions cause the synaptic vesicles to move to the presynaptic membrane and fuse with it releasing acetylcholine Acetylcholine diffuses across the synaptic cleft and binds with receptors on the sodium voltage gated channels on the postsynaptic membrane causing it to depolarise Muscle contraction The action potential movies through the fibres by travelling through T – tubules that branch through the sarcoplasm The action potential moves through the tubules until it reach the sarcoplasmic reticulum The action potential opens calcium ions in the sarcoplasmic reticulum Calcium ions diffuse out into the muscle Calcium ions cause tropomyosin to change shape and so that the binding sites on the actin filament are exposed An ADP molecule that is attached to the myosin heads allows it to form a cross bridge with actin by binding with the receptor site Once the cross bridge is formed, the myosin head changes shape and slides the actin across. In doing so it loses the ADP An ATP molecule attaches to the myosin head and thus causes it to detach Calcium ions activate the enzyme ATPase which hydrolyses ATP and releases energy that allows the myosin head to resume its original shape. The myosin head now has a new ADP molecule that will allow it to bind with a new receptor site somewhere along the actin filament Muscle relaxation When the muscle is not being stimulated, the sarcoplasmic reticulum actively transport calcium ions back into it The lack of calcium ions means that tropomyosin can establish its original position, covering the myosin head binding sites Energy supply Energy is needed for the movement of myosin heads and the active transport of calcium ions ATP often needs to be generated anaerobically Phosphocreatine provides inorganic phosphate molecules to combine with ADP to form ATP Section 12. 1 – Principle of homeostasis The maintenance of a constant internal environment By maintaining a relatively constant environment (of the tissue fluid) for their cells, organisms can limit the external changed these cells experience thereby giving the organisms a degree of independence. What is homeostasis? Maintaining the volume, chemical make up and other factors of blood and tissue fluid within restricted limits There are continuous fluctuations; however, they occur around a set point Homeostasis is the ability to return to that set point thus maintaining equilibrium The importance of homeostasis Enzymes and other proteins are sensitive to changes in pH and temperature Water potential of blood and tissue fluid should be kept constant to ensure cells do not burst or shrink due to a net movement of water (osmosis) Maintaining a constant blood glucose concentration ensures that the water potential of the blood remains the same Independence of the external environment – a wider geographical range and therefore a greater chance of finding food shelter, etc Mammals – homeostasis allows them to tolerate a wide range of conditions Control mechanisms The set point is monitored by: 1. Receptor 2. Controller brain analyses and records information from a number of different sources and decides on the best course of action 3. Effector – brings about the change to return to set point 4. Feedback loop – informing the receptor of the changes in the system brought about by the effector Section 12. 2 Thermoregulation Mechanisms of heat loss and gain Production of heat – Metabolism of food during respiration Gain of heat from the environment – Conduction, convection (surrounding air/fluid), Radiation (electromagnetic waves particularly infrared) Mechanisms for losing heat Evaporation of water Conduction – to ground/solid Convection convection (to surrounding air/fluid), Radiation Endotherms derive most heat energy from metabolic activities Ectotherms – obtain most heat from the external environment Regulation of body temperature in Ectotherms Body temp fluctuates with the environment Controlled by exposure to the sun Shelter to the sun/burrows at night/obtains heat from the ground and very little from respiration. Can sometimes change colour to alter heat that is radiated Regulation of body temperature in Endotherms Most heat gained through internal metabolic activities Temperature range 35 – 44 oC – Compromise between higher temperature where enzymes work more rapidly and the amount of energy needed (hence food) to maintain that temperature Conserving and gaining heat in response to a cold environment Long term adaptations: Small SA:V ration Therefore mammals and birds in cold environments are relatively large Smaller extremities (e. g. ears) thick fur, feathers or fat reserves to insulate the body Rapid changes: Vasoconstriction – reducing the diameter of arteries/arterioles Shivering – in voluntary rapid movements and contractions that produce he energy from respiration Raising hair – enables a thick layer of still air to build up which acts as a good insulator. Behavioural mechanisms – bathing in the sun Decreased sweating Loss of heat in response to a warm environment Long term adaptations: Large SA:V ratio so smaller animals are found in warmer climates Larger extremities Light coloured fur to reflect heat Vasodilation – Arterioles increase in diameter, more blood reaches capillaries, more heat is therefore radiated away Increased sweating – Heat energy is required to evaporate sweat (water). Energy for this comes from the body. Therefore, removes heat energy to evaporate water Lower body hair – Hair erector muscles relax. Hairs flatten, reduces the insulating layer of air, so more heat can be lost to the environment Behavioural mechanisms – seeking shade, burrows, etc Control of body temperature Mechanisms to control body temperature are coordinated by the hypothalamus in the brain The hypothalamus has a thermoregulatory centre divided into two parts: A heat gain centre which is activated by a fall in body temperature And a heat loss centre which is activated by an increase in temperature The hypothalamus measures the temperature of blood passing through it Thermoreceptors in the skin also measure the temperature Impulses sent to the hypothalamus are sent via the autonomic nervous system The core temperature in the blood is more important that the temperature stimulating skin Thermoreceptors Section 12. 3/12/4 – Hormones and the regulations of blood glucose/Diabetes and its control Hormones are produced by glands (endocrine glands) which secrete the hormones into the blood The hormones are carried in the blood plasma to the target cells to which they act. The target cells have complementary receptors on the cell surface membrane Hormones are affective in small quantities set have widespread and long-lasting affects Some hormones work via the secondary messenger model: 1. The hormone (the first messenger) binds to receptors on the cell surface membrane, forming a hormone-receptor complex 2. The hormone-receptor complex activates an enzyme inside the cell that produces a secondary messenger chemical 3. The secondary messenger acts within the cell produces and a series of changes Both glucagon and adrenaline work by the secondary messenger model Adrenaline as a secondary messenger 1. The hormone adrenaline forms a hormone-receptor complex and therefore activates an enzyme inside the cell membrane 2. The activated enzyme the converts ATP to cyclic AMP which acts as the secondary messenger.

Wednesday, November 20, 2019

Discuss how authors critique gender roles in thire noveles Season of Essay

Discuss how authors critique gender roles in thire noveles Season of Migration and Beer in the snooker club - Essay Example Salih writes about characters from poorer parts of northern Sudan while Ghali writes about city people in Egypt. The main characters in both of these books are male. The men in the books also meet a number of women and from time to time there is discussion of gender relations in British society and in their homeland also. Contact with Western society, and with London in particular, makes the authors think about potential changes to local family and social relationships, and especially to gender roles. In the first novel it is quite difficult to work out what the author’s views on the topic of gender are, because the male narrator has quite a different perspective from the other main character, Mustafa Sa’eed. The village in which they meet is rather traditional which means that life runs on the basis of Islamic law. The narrator describes his family, with emphasis on his grandfather who is a good male role model for him. There are also a number of elderly males who make a lot of sexist jokes about women. One of these characters, Wad Rayyes, seems to represent the dominant view : ‘He had been much married and much divorced, taking no heed of anything in a woman except that she was a woman, taking them as they came, and if asked about it replying â€Å"A stallion isn’t finicky†.’ (Salih: 66) The narrator observes this behaviour and repeats the animal comparison when he says (Salih: 81) â€Å"Wad Rayyes, who charged women as he charged donkeys†. This kind of womanizing behavior is also displayed by Mustafa Sa’eed who goes after several different British women when he is in London. He actually marries Jean Morris and she compares him to â€Å"a savage bull that does not weary of the chase† (Salih: 33). The fact that Sa’eed kills Jean Morris and drives several of his lovers to suicide underlines the aggression that this character feels in his romantic relationships. At one point Sa’eed describes his bedroom in

Tuesday, November 19, 2019

Eating Habits of College Students Research Paper

Eating Habits of College Students - Research Paper Example Also, it demonstrates how adequate understanding of consequences of poor eating habits can improve the health of the students and the entire nation. 1. Research question(s), rationale and qualifications, This study aims to answer various issues relating to eating habit of the college students. For example, how does food quality of campus cafe affect eating habits of the college student? What factors influence the eating habit of the college students? Is there a relationship between campus life and eating students eating habit? Does poor eating habit among the college students have any effect on their health? What is the link between the level of health dietary awareness and students eating habit? 2. Outcomes and impact The rate of overweight and obesity in the United States has been rising at an alarming rate as well as the prevalence of lifestyle diseases such as cardiovascular, diabetes and so on. Various studies have shown that the most affected population are those between the age of 18 and 29 years, and an unfortunate majority of these are the college, students. Also, about 36% of the college students are either overweight or obese (Farrell, 2010). The menace of overweight or obesity among the college students has been contributed by unhealthy eating habits. The college environment has also made a significant influence on the eating habits of the students because of the availability of large portions of high calorie and fat foods as well as buffet style cafeteria (Deshpande et al., 2009).

Saturday, November 16, 2019

Public Honor vs. internal virtue Essay Example for Free

Public Honor vs. internal virtue Essay History has presented two different types of honor that have both been highly acceptable in their respective cultures. Christianity and the Bible put a great deal of emphasis on personal virtue, where one worries about themselves and not really anything else. This is in direct contrast to other cultures, however, where public virtue is a much more important part of society. In the play Julius Caesar, society rewards people who keep the whole in mind as opposed to keeping self in the most important place. The clash between public virtue and internal virtue is one that has created a personal struggle for many men in both of these societies, as well as in today’s society.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   In the Bible, those who followed Jesus Christ were urged to practice personal virtue, as opposed to overall public virtue. Even Jesus himself was a living example of this. He was known to go against the flow and in fact, that is what eventually got him crucified. He went through his life preaching his principles, which directly clashed with what the religious elders were telling people at the time. This goes against public virtue, because it caused a ruckus within society and shook up the order that was currently working in society. That was unimportant to Jesus Christ, though, as his main focus was on internal purity as opposed to looking out for the greater good. Still, his work did go towards the greater good, though. That is the interesting paradox that exists within this example. Though Christ’s primary focus was on internal virtue, the overall body of his work was highly focused on public virtue. This could not be evaluated until his work on earth was finished, though, as from the surface, it appeared that Christ was a divider, instead of a person who brought people together for the pursuit of a great good.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   A direct clash can be found if one looks at a story like Julius Caesar. Caesar was a leader that was loved by the majority of his people for the majority of his time in office. Eventually, he had to be taken down, though. He was not doing things as the leader of Rome that needed to be done in order to ensure that the people of that area had a fair shake. Because they knew this, the members of the Roman Senate like Brutus and Marc Anthony took it upon themselves to take action. They did not focus on doing the thing that was â€Å"right†, in regards to their own personal virtue. Instead, they threw aside those personal considerations in order to do something for the greater good of society at large. They assassinated Caesar in the most brutal manner possible in order to protect the people of Rome. In the time of Jesus, this would have been looked upon with a great deal of disgust, even though they were actually doing something good for society. Since they would have committed a personal wrong, basic Christian values would not have looked kindly upon their actions. In Roman society, where public virtue was given precedence over internal virtue, they were heroes, though. Brutus was a murderer by definition, but history looks upon him as a sympathetic and heroic figure. This speaks primarily to the differences in philosophy that existed during the two eras.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   These two examples are important to understanding the clash that existed between the two ideas. For the most part, each era of time allows for only one of these theories when it comes to judging major events. It is very difficult for people to keep their internal virtue, while also doing something that exhibits public virtue. Instead, a choice must be made between the two. People must decide if they want to keep their own internal sanctity or do that which will benefit society at large. In the case of Jesus Christ, the internal virtue overcame any consideration of public virtue because the teachings of the Bible made it that way. The time of Julius Caesar and Brutus was ruled by a different code, so history looks kindly on his actions in their scope. This interesting paradox clearly shows how different societies view different actions in regards to their moral â€Å"goodness†.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Internal virtue and public virtue are two very different ideas that were accepted in two very different times. Today’s society seems to have an understanding for both, whereas other times would only allow for one or the other. Today, respect can be found for people who keep the greater good in mind when they take action. By contrast, those people who do what is right for themselves seem to get places in today’s society, as well. The clash between the two is not nearly as strong or nearly as distinct today as it once was. Still, there are times when people have to make a choice between the two types of virtue and in those times, the choice can dictate how history views their action.

Thursday, November 14, 2019

Free Essays - Anne Frank :: Anne Frank

The Franks were your general German family and Anne was your general German girl. This family of four lived in Germany, Mr. Frank was an average business man, Mrs. Frank was an average mother and Margot and Anne were average students. The one thing that made them different in the eyes of Hitler, was the fact that they were Jewish. Once Hitler rose to power, the Franks fled to Holland, where the hoped to be safe from the Jewish-blood thirsty Nazis, they went on with their normal lives, until once again Hitler took over. This caused the Franks to flee again, only this time they would be in hiding. A plan was devised; the Franks would stay in an abandoned section of the Kraler office building, along with another family of three: the Van Daans. The Franks set off for their new "home" before the Van Daans. They had to carry with them things that would last for as far as they knew, years. Anne took with her two vests, three pairs of pants, a dress and skirt, jacket, summer coat, shoes, two pairs of stockings, a cap and a scarf. During the journey through the streets, non-jews looked at them with pity and sorrow, they knew that there was nothing they could do to help them, no rides, no food, no help period. Once they arrived to what they called, the "Secret Annexe" they set their things in their rooms. Anne decorated her wall with all of her favorite actors and actresses. About a week later the Van Daans joined them, Mrs. Van Daan brought with her, her "chamber" Mr. Van Daan brought a folding tea table and Peter brought his cat Mouschi. Each of them had their own individual personality, Mr. Van Daan, was pretty mellow with most of the Franks, especially Margot, but often had a word or two to say about Anne, he didn't like her constant chattering. Mrs. Van Daan was loud and flirtatious, constantly pestering people and never willing to do her part of the work around the Annexe. Then there's Peter, the quiet, dull and boring one. At first Anne cannot stand Peter's laziness, but she later grows quite fond of him. As time goes on, they each get to know each other a little better, Miep brings them news from the outside world as often as she can along with some small amounts of rations. Free Essays - Anne Frank :: Anne Frank The Franks were your general German family and Anne was your general German girl. This family of four lived in Germany, Mr. Frank was an average business man, Mrs. Frank was an average mother and Margot and Anne were average students. The one thing that made them different in the eyes of Hitler, was the fact that they were Jewish. Once Hitler rose to power, the Franks fled to Holland, where the hoped to be safe from the Jewish-blood thirsty Nazis, they went on with their normal lives, until once again Hitler took over. This caused the Franks to flee again, only this time they would be in hiding. A plan was devised; the Franks would stay in an abandoned section of the Kraler office building, along with another family of three: the Van Daans. The Franks set off for their new "home" before the Van Daans. They had to carry with them things that would last for as far as they knew, years. Anne took with her two vests, three pairs of pants, a dress and skirt, jacket, summer coat, shoes, two pairs of stockings, a cap and a scarf. During the journey through the streets, non-jews looked at them with pity and sorrow, they knew that there was nothing they could do to help them, no rides, no food, no help period. Once they arrived to what they called, the "Secret Annexe" they set their things in their rooms. Anne decorated her wall with all of her favorite actors and actresses. About a week later the Van Daans joined them, Mrs. Van Daan brought with her, her "chamber" Mr. Van Daan brought a folding tea table and Peter brought his cat Mouschi. Each of them had their own individual personality, Mr. Van Daan, was pretty mellow with most of the Franks, especially Margot, but often had a word or two to say about Anne, he didn't like her constant chattering. Mrs. Van Daan was loud and flirtatious, constantly pestering people and never willing to do her part of the work around the Annexe. Then there's Peter, the quiet, dull and boring one. At first Anne cannot stand Peter's laziness, but she later grows quite fond of him. As time goes on, they each get to know each other a little better, Miep brings them news from the outside world as often as she can along with some small amounts of rations.

Monday, November 11, 2019

What Is Jcaho & What Role Does It Play in the Current Healthcare System-Is It Necessary

Shakespeare Sance Homework # 4 The factors that would cause the lung to collapse are elastic recoil and high surface tension. And the factors that prevent the lungs from collapse are negative intrapulmonary pressure and surfactant. During expiration : volume increase and pressure decrease During inspiration : volume decrease and pressure increase The role of surfactant is to decrease surface tension by more than 40 times. And it's effect on surface tension is to prevent them from PO2 in alveolar : 104PO2 in venous blood : 40 PO2 in atmosphere : 160 PO2 in arterial : 100 PO2 in expired : 120 PO2 in inspired : 160 Co2 is 20 times more soluble in water than oxygen Anatomical dead space : the section where there is no gas exchange Physiological dead space : the sum of anatomical dead space and alveolar Dead space And it would only increase if a person is sick for example suffering from asthma . Compliance in respiratory care: how much stretch you have how much changes in pressure natural ly the lungs have a high compliance .Low compliance : pulmonary edema and cystic fibrosis High compliance : emphysema : where a person can get air in and can't get it out O2-Hb dissociation curve:when the curve mov to the right there is less saturation of hemoglobin . When is shift to the left less oxygen release more oxygen bound to hemoglobin. Situations that would cause more o2 to release are high temperature, low PH , exercise , high co2. Way O2 are transport: hemoglobin and plasmaWay CO2 are transport : plasma , bicarbonate ion , and carbamino-compounds Chloride shift : exchange of bicarbonate for chloride across the red blood cell The role of the phrenic nerve : excite the diaphragm and intercostal muscles , causing breathing movements. Anatomy respiratory membrane: a simple layer of squamous epithelial of alveolus and a simple layer of squamous epithelial of the capillary very thin, together the alveolar and capillary walls and their fused basement membranes form the respirat ory membrane.Increase in thickness of the respiratory membrane would decrease gas exchange or imputed gas exchange. Inspiratory center: comparable to the SA node this center sets the rhythmicity of respiration by spontaneously depolarizing and stimulating the phrenic nerve to cause inspiration. Expiratory center: it's caused as the inspiration center no longer stimulate the diaphragm stop expiratory allows us to respirate. Pneumotaxic center: this center inhibits the inspiratory center to limit the period of inspiration.Damage to the pneumotaxic center may cause prolonged inspirations. Apneustic center: this center stimulates the inspiratory center and is usually inhibited by the pneumotaxic center. Cortical nephron: has short loop of henle and glomerelus further from the corticomedullary junction. efferent arteriole supplies peritubular capillaries Justamedullary nephron: has long loop of henle and glomerulus closer to the corticomedullary junction. efferent arteriole supplies vasa recta.The filtration membrane: basement membrane, podocytes, and glomerular endothelium Pressure forces fluid out the glomerulus: glomerular blood hydrostatic pressure Force oppose fluid to move out : blood colloid osmotic pressure Afferent vasodilate: blood flow increase , blood pressure increase and GFR increase Efferent vasodilate: blood flow decrease, blood pressure decrease and GFR decrease Afferent vasoconstriction: blood flow decrease, blood pressure decrease and GFR decrease. Efferent vasoconstriction: blood flow increase , blood pressure increase and GFR increase.The role of renin is to cut angiotensinogen to angiotensin 1 and it's secreted when there is sense of low blood pressure. Everything that are reabsorbed back into the blood has tubular maximum and you exceed the T max , the exceed remind in the urine. The major hormones that regulates potassium secretion is aldosterone Acidosis: PH under 7. 35 Alkalosis: PH over 7. 45 PH: measures free hydrogen ions range from 0 t o 14 there is an inverse relationship between hydrogen ions and PH as hydrogen ion goes up PH went down Three majors ways to buffeting urine : chemical buffer system, bicarbonate buffer system and protein buffer system.Hypoventilation : PH went down Hyperventilation : PH goes up ECF: fluid inside the cell ICF : fluid outside the cell More sodium ECF than ICF More potassium ICF than ECF Countercurrent system: fluid flowing in parallel tubes in opposite direction And you will find one at the They shouldn't no red blood , protein , bile pigment and no glucose Intense SNS no urine Little SNS blood pressure goes up GFR goes up PSNS : more urine Sensible : sweat you can actually see they are hypotonic and has electrolytes Insensible : sweat you don't see come from your skin and you ears .

Saturday, November 9, 2019

To What Extent Should We Trust Our Senses to Give Us the Truth

To what extent should we trust our senses to give us the truth? Most of the things we know are based on a life-long series of observations and experiments through our own senses. Without our senses, social interactions and critical thinking would be impossible, leaving us only with inexplicable emotions, a close state to nothingness. Despite its significance, however, our senses have limitations ranges from our dependency to language to our own biological limitations. Human beings are inherently provided with these inevitable limitations.We therefore, as well-educated individuals, must not completely trust our senses as it can easily be deceived. Our dependence on language distorts what our senses are truly getting. In a simple context of analyzing an art piece, for instance in the process of analyzing the nuance of the work, our interpretations of what we see tend to be bounded with the language that we know. Without the use of language, in this context, the art piece will remain ab stract in our mind. The emotions that we get from viewing the art piece, for example, can be described with adjectives.In a wider sense, language influences the way we think. I have encountered an experience where my short eyesight (I need glasses to see â€Å"normally†) gave a misleading account to an event. I was in an art convention center with my friend; the place was covered with a realistically structured fake plastic trees. It was part of the art works being exhibited. In the end of the expo I said to my friend, â€Å"Nice right! Such great pieces of art shown there! Especially the trees, how on earth can they grow it to form such structure†.My friend, whose vision is â€Å"normal†, told me that it the trees were forgeries. I wasn't using my glasses at the moment, If I was then I would've reacted differently. Biological capabilities limit what we are able to sense and perceive. There are still many factors such as spacial familiarity, past experience; our tendency to see or hear what we expect rather than what really happen; optical illusions or social and cultural conditioning that aren’t being discussed, but also a limitation of our senses.Although with the chance of getting false knowledge, what important is that we develop critical thinking skills to distinguish between good and bad reasoning. Examining our own perspectives, using our own senses perhaps, and comparing them to those of others and to see what we learn from it is what important rather than abstaining from the pursuit of knowledge due to the limitations of our senses.

Thursday, November 7, 2019

How to Use Facebook Retargeting Ads With Nick Steeves [PODCAST]

How to Use Facebook Retargeting Ads With Nick Steeves [PODCAST] It’s a challenge to get traffic to your website. Even after you put in the effort to build traffic, many visitors don’t buy what you’re selling the first time they visit. What you want to do is get your visitors to return so they make that purchase. Today’s guest is Nick Steeves, the chief product officer at Wishpond. He is going to talk to us about retargeting, video ads, and how to measure your digital advertising success. If you want to get more people to come back to your site to buy your product or service, you won’t want to miss today’s show! Information about Wishpond and what Nick does there. Retargeting: What it is and why it’s important. Nick also talks about two ways to do retargeting one way that is basic and one way that is more advanced. How Wishpond comes up with retargeting ad ideas. The types of retargeting ads that work the best for Display and Facebook. Tips on making great videos that will result in conversion. Why it makes good business sense to â€Å"pay to play† on Facebook. Why Wishpond calls their marketing team â€Å"the growth team.† What the Wishpond growth team’s workflow looks like and how they keep it all organized. How to test ads to know what works best, as well as what to look for to know whether the ad is working or not working and how to learn from the ads that just didn’t work. Nick’s best advice for someone just starting out with retargeting ads. Links: Nick Steeves Wishpond AdEspresso Google AdWords

Monday, November 4, 2019

Business Opportunities in Food and Beverage Industry Essay

Business Opportunities in Food and Beverage Industry - Essay Example Food is a very defining element of a culture. Eating different kinds of foods does more than just satiating the craving for taste; it provides a greater insight into other cultures. This paper discusses a business idea of establishing a South Asian Tea Restaurant in New York. Americans generally like the South Asian foods a lot. â€Å"one should not be surprised if a seven-year-old American kid walks up and asks for aloo mater samosas and his mom is keen on having the complimentary chai† (Deccan Chronicle, 2013). Popular food items include but are not limited to samosas, pakoras, halwa poori, murgh cholay, and lassi. These foods are not only very tasty, they also have a high nutritious value since they are all made from natural products and do not include the use of any preservatives or chemicals that is a big plus point. â€Å"Everything is made right there, even the samosas(no frozen boxed samosas here), pakoras, and chutneys(not jarred like most places serve) are all made fresh here and delicious† (Justin, 2013). The fundamental purpose of establishing any business is to make money. Most of these food items are extremely cheap to make and yet sell for a very large price primarily because of their nutritional value, their exceptional taste, their exotic looks, and their cultural affiliations. Even more, when these food items are made in bulk, they become all the cheaper to make and more profitable to sell at the same time. At a famous Indian restaurant, â€Å"While Samosa and Idli Sambar are available for $5.50, one has to spend $7 for Masala dosa and $7.5 for two pieces of gulab jamun† (First Post, 2012). Considering the ingredients used in the making of a samosa, one samosa might cost the owner no more than $0.15. Comparison of this to the amount it sells or provides evidence of the profitability of the business. The other food items are similarly cheap but with a huge profit margin. It takes careful planning and strategy to establish s uch a business at the right point. The owners should look for an area where the population of South Asians is relatively higher as compared to other regions in America since the prime consumers of this business are people from such countries as Pakistan, India, and Bangladesh. Such areas are not hard to find since most of these families tend to live together in neighborhoods since they have common cultural values and find one another helpful in America. In order to have an edge over other such restaurants, the owners need to pay special attention toward ambiance. Songs of old legendary singers like Noor Jehan, Lata, Rafi, Mukesh, and Kishore can provide the place that extra boost that it requires to appeal massive in-pour of consumers. South Asians mostly like to have samosas and pakoras with tea during the lunch breaks and as snacks, so these items should be available all day long whereas other items like halwa poori and murgh cholay should be made available in the breakfast. Menu for lunch and dinner can be decided depending upon how large the owner wants the business to be. Establishment of this business successfully imparts the need to advertise it in such a way that the benefits of these food items in general and what they offer in comparison to the typical Western food, in particular, are easily noticeable for the audiences. To achieve this, the contemporary issue of diseases caused by consumption of chemicals needs.

Saturday, November 2, 2019

Target marget Essay Example | Topics and Well Written Essays - 250 words

Target marget - Essay Example p.). While innovators are proven â€Å"risk takers† who are the â€Å"first 2.5%† that will purchase a product, and early adopters are the ones who will purchase a product after some positive response from the overall market (about 13.5% of consumers), the early majority are the group of consumers who actually tends to avoid risk and purchase a product after majority of the market have already made a positive response about the product (34% of consumers) (â€Å"Product Diffusion Curve,† n. p.). Meanwhile, consumers in the late majority group are characterized by skeptic consumers who are only willing to purchase a product after the product is already commonly used (another 34%), and laggards are the ones that will last purchase a product (16% of consumers) (quickmba.com, n. p.). With this knowledge, I will choose to target the early majority; given that I am offering a new product, I would package the product to immediately generate positive response and interest . I am optimistic that getting the support of the early majority would lead the product to be accepted by majority of consumers. Works Cited â€Å"Product Diffusion Curve.† Quickmba.com. Quickmba, n. d. Web. 14 February 2011.

Thursday, October 31, 2019

Architects of building with gargoyles in New York City Research Paper

Architects of building with gargoyles in New York City - Research Paper Example Gargoyles is a Gothic design which accentuates many buildings in New York. Although some views gargoyles as more on having a superstitious relevance, some say that it is merely used as a water diversion. Schermerhorn Building is one of the most popular gargoyle accentuated building and was designed by a great architect named Henry J. Hardenbergh. He was born in New Jersey and worked as an apprentice in New York with a architectural firm for five years before opening his own practice in 1871. Many refer to Hardenbergh as the architect who â€Å"left his indelible ink† in the world of architecture. (Gillon, 1988) Henry Vaughan is an Anglo-American architect who is claimed to be the one who the Americans owe the revival of Gothic designs to. His designs consists of churches, chapels and school buildings. One of the more famous designs of Vaughan is the St. John the Divine in New York known for its gargoyles. He was in America for approximately 36 years between 1881 to 1917 and hi s contributions to the architectural field is vast and known for being highly original. (Gillon, 1988) Vaughan was just becoming established in Boston, when he came into contact with Charles Perkins Gardiner of Brookline, Massachusetts and was, at the time, dedicating himself almost exclusively to church and church-related buildings. Vaughan, as a man, had deep religious conviction who was quite totally devoted to the Anglican and Episcopalian worship as well as to the English Gothic architecture which he perceived as their true and proper architectural expression.Vaughan's scheme for handling cluttered contexts were brilliant. Although he was attached to the English Gothic religiously, bordering on fanaticism, he remains, to this day, as one of the best architects. (Gillon, 1988) The Chrysler building, designed by the architect William van Allen, is among the last skyscrapers in the Art Deco style. The gargoyles of the said building depicts Chrysler car adornmenys and the spire is sculptured on a radiator grille. Since the building's restoration in 1996, the building once again shines as it must have way back in the 1930s. Despite the magnificence of the exterior of the building, the interior is even more so. Marbles floors and a generous display of Art Deco patterns as well as the stylishly designed elevator doors makes the Chrysler Building as one of the most beautiful office towers in New York. However, as an architect, van Alen was majorly dismissed by contemporary critiques of architecture. They claim that design of spire was pure folly and ostentatious. His design of the Chrysler Building has grown in popularity despite the many criticisms and is now considered as one of the greatest buildings in America, which frequently features magazines and covers of architectural books.(Gillon, 1988) James Bogardus, architect of the 75 Murray Street Building gargoyles pioneered cast-iron architecture. He is one of the most famous architects of New York although he personally did not consider himself as an architect. He considered himself more as an inventor in the 19th-century tradition who patented cotton-spinning machinery, grinding mills, gas meters, clocks and printing apparatus.Starting by 1848, he initiated the promotion of iron buildings as fireproof, mobile and efficient. He sold his ideas to developers up until 1860's before he shifted his attention to other work interests. (Gray, 1995) A common distinguishing factor of Bogardus' design is the Medusa-head keystones which were also used in Bogardus' ill-fated Laing Stores. The said design is believed to protect homes from the entering of evil. The Greeks, similarly, sometimes used the figure of Medusa's terrible gaze in order to protect objects which includes the windows and doors considered as the eyes of the buildings. Oswald Wirz', also a gargoyles architect, uses the same concept with his use of Green Men and numerous gargoyles. (Gray, 1995) Wirz is a designer a few New York City buildings in the Gilded Age. Among those of his buildings that have survived are now land-marked

Tuesday, October 29, 2019

Neo-Liberalism and Global Environmental Governance Essay

Neo-Liberalism and Global Environmental Governance - Essay Example Human activities whether political, economic, or social have to be managed as subsets of ecosystems and the environment. Environmental governance involves the government, business society, and the civil society and necessitates the incorporation of alternative governing systems such as the watershed based management (Kutting, 2004). The global community has proven incapable of meeting these requirements, which has led to environmental degradation and the emergence of new environmental problems. The international community is experiencing several problems due to globalization. Globalization has led to the improvement of the logistic systems, changes in business and demographic trends and rapid technological progress. This process, however, has led to social and environmental marginalization, widening the gap between the rich and the poor, and increasing the gap between information and technology in the rich and poor countries and social groups. Sustainable development calls for the go vernance of globalization by applying international laws, civil sector domain, and the private sector. The global community has participated in several summits for sustainable development in order to address these issues. ... Resource depletion and environmental degradation could undermine the economy and have to be addressed by all sector actors. Neoliberal institutions argue that international institutions have considerable power to mobilize policymaking towards sustainable environmental governance. Some actors argue that a body high up in the UN hierarchy has to be established in to deal with global environmental and developmental problems. This body would have a mandate and funds to coordinate and centralize environmental and developmental problems within the UN. Economic governance was developed by the UN to promote economic prosperity. The World Bank was established to lend capital to governments for development and poverty alleviation. The GATT agreement promoted global prosperity through the establishment of free markets. The World Bank together with donor governments promoted the idea of liberal market themes, which would also govern resource allocation. UNEP has enacted several laws in the areas of marine pollution, disposal of hazardous wastes, and depletion of the ozone layer. This body linked development and environmental depletion, which forced developed nations to reduce its budgetary allocation. The developed framework has established several institutions in various countries that deal with environmental issues. Developed nations have in the past used environmental laws to limit innovation, intellectual property protection, and macroeconomic management in developing countries. Several developing countries have acquired development loans from the World Bank and other developed nations. These loans have increased the national debt of these countries, making poverty levels unmanageable. These governments spend most

Sunday, October 27, 2019

Success and failure factors of BPR

Success and failure factors of BPR Business Process Reengineering is a complex process that intends to bring about radical transformations within an organization. This particular study is a pilot project on BPR that studies a store belonging to Argos, one of UKs prime retail chains. It interacts with the employees out there and observes various processes in order to come up with a framework for BPR implementation. Before getting into the fieldwork, a detailed literature review has also been undertaken through this study involving various success and failure factors of BPR and related issues like six sigma, benchmarking and importance of total cycle time. This study consists of mainly qualitative analysis with a bit of quantitative portions wherever necessary. The primary modes of data collection includes a open ended interview involving six questions asked to six respondents working at different levels of the store that was assigned for this purpose. This interview was used as the foundation to proceed with further analysis of various processes within the store with active help from the organization. It was seen through the interview that the employees do have reservations about certain operating issues within the organization. But at the same time they are a bit wary of potential changes and hence are not willing to freely talk about the whole issue. It basically shows two main areas of improvement namely in supply chain and inventory management and also in the field of customer relationship management. Further analysis of the processes has shown that due to the usage of multiple outdated legacy software, the supply chain has become slow and unable to handle the recent growth. That is why Argos is working with Oracle and Accenture to overhaul the software system. Along with these technological modifications, some strategic changes have been proposed through this study regarding the inventory replenishments strategy. It has proposed a more frequent replenishment backed by cutting edge business forecasts and other related measures. As far as customer service issues are concerned, a problem with delays in delivery has been observed and hence more automation in the process along with some amount of outsourcing is suggested in order to save costs as well as increase efficiency by reducing cycle time. Throughout this study, it has also been seen that the proposed BPR processes can meet with employee resistance owing to their own insecurities and practical problems. That is why it has been advised to have a more compassionate HRM policy ensuring proper training and support for the employees. Nevertheless, it has to be accepted that due to time and resource constraints a few important aspects could not be analyzed or implemented in through this study including the implementation of a Six Sigma process and its implementations. A longer duration for implementation and observation of these issues could have generated more insights. Nevertheless, this study has provided with an opportunity to venture into this complex topic of reengineering a retail outlet and we hope that it would be a good foundation point for the future researchers. Introduction Business Process Reengineering (BPR) is a complex process that calls for almost a radical redesigning of the core business processes inside an organization in order to achieve rapid developments in terms of productivity, quality as well as cycle times (McAdam and Donaghy, 1999). In this process, companies start with an open mind without any presumptions and rethink the whole process in an effort to deliver better value to the clients. They bring about revolutionary changes in their value system and put extra emphasize on the customer needs. They also restructure the organization and do away with unproductive activities especially in two important areas. Firstly, the functional organizations are redesigned into different cross-functional teams. Second, modern technologies are used to improve dissemination of knowledge as well as decision making. Business Process Reengineering proposes five major steps to be taken by the managers to achieve dramatic changes in their organizations. These steps include, refocusing on the company values based on customer needs, redesigning the core processes using modern information technology, reorganizing the teams across function by attributing end-to-end responsibility to them for a whole process, rethinking existing organizational as well as people issues, improve business processes across the organization (Peppard and Fitzgerald, 1997). Business Process Reengineering is used by the companies in order to achieve certain results that reduce costs as well as cycle time. Business Process Reengineering reduces costs and cycle times by eliminating the activities as well as the employees who obstruct productivity (Ranganathan and Dhaliwal, 2001). When the teams are reorganized, it decreases the layers in management and removes hierarchical boundaries thus accelerating information flows which redu ce defects and errors in the whole process. It also helps in improving overall quality by decreasing fragmentation of work by establishing clear responsibilities as well as ownerships of processes. So, the workers at every level get responsibility for respective outputs and can also measure their own performances based on regular feedbacks. For this particular study, UK based retail chain Argos is being used as the subject upon which the principles of BPR will be tested. Argos is a fully owned subsidiary of Home Retail Group, UK. Argos is the pioneer of Multi channel business retail. With 33,000 employees working to support over 700 stores in UK and Ireland, Argos is a  £4.3 billion company. The intention is to see how operational efficiency can be improved within the organization through BPR and for this purpose a certain Argos store was picked up for the preliminary study. It was done with active support from Argos side and for last few weeks I have worked with close cooperation with the store manager. The retail industry is a business that is fast moving, complex, and constantly changing. It is an industry where only the most innovative and well managed organisations can survive and succeed (Ranganathan and Dhaliwal, 2001). The retail industry generates revenues through the sales from supermarkets, cooperatives, co nvenience stores and nowadays even through online stores etc. Traditionally, there were various marketing strategies that allowed the retailers to continually promote their companies by attracting new customers. But the fierce competition in the contemporary markets has necessitated better consumer relationships and the capacity to follow up with them (Peppard and Fitzgerald, 1997). The increase in disposable income as well as the changes in lifestyle of these consumers have opened new vistas in retailing and have also increased competition. The managers in the retail sector must be innovative as well as prudent enough to survive in this cut throat environment making sure that every necessary step towards managing change has been taken and they should be ensuring delivery of quality standards in customer service so that the firm builds strong brand loyalty among the consumers towards them. Here, we have to see that the process of BPR is closely associated with project management and hence we should also take an overview of project management before getting into further details. A project is a temporary business activity, one having a well defined beginning and ending. They are undertaken to accomplish particular goals and objectives (McAdam and Donaghy, 1999). The temporary nature of a project, as against the more repetitive functions like operations, requires a different management approach. Project Management is a management discipline concerned with the planning, organization and managing resources for successful implementation of a business strategy which meets all its goals and aims. This particular study is also a project that has been undertaken to see the impact of the business process reengineering process on the supermarket chain Argos. The primary objective of Project Management is to achieve all the project goals within the pre defined resource constraints. As such, it shares many tools and techniques with Business Optimization and Modelling (Peppard and Fitzgerald, 1997). The generic constraints of any project are time, scope and cost; also referred to as the project triangle. For my project, the constraints are time: 3 months, scope: a specific utility within the operations function which is yet to be allocated to me by the company and cost: I would have to work incurring no financial costs for the company; as such the only costs incurred are my time and efforts. I would be working under these constraints to optimise the reengineering project. Business Process Reengineering (BPR) is a management approach that aims at implementing improvements by elevating efficiency and effectiveness of the business processes. The fundamental strategy adopted by organizations in this area by looking at their operations from a cl ean state. More specifically, they are looking at what can be done in a better way if the whole process function were to start from scratch. Reengineering is the fundamental rethinking and the radical redesign of business processes to achieve dynamic improvements in the areas of cost, speed and quality of service (McAdam and Donaghy, 1999). Many of the recent developments in the management sphere can be attributed to reengineering. The cross functional team is one such illustration, developed out of an effort to reengineer the separate functional departments to a mutually coordinating and interdependent process utilities. The Management Information Systems, ERP, Supply chain management, Knowledge management and many others have been developed by reengineering (Ranganathan and Dhaliwal, 2001). BPR derives its existence from various interdisciplinary components, though the four most affecting areas are: Strategy, Technology, People and Organization (Peppard and Fitzgerald, 1997). A process is viewed as common framework, considering these dimensions. Michael Hammer and James A Champy were the first proponents of this concept. They began by criticizing the rigid departmental approach in many organizations. In a series of publications: The Agenda, Reengineering the Corporation, Reengineering the management, they argued that a single team that works under diluted responsibility and reporting structure would be more useful to the organizations. The result was the development of Cross Functional Teams. They later expanded their arguments to include Suppliers, Customers and distributors. Reengineering is very difficult to implement in an organisation. It causes widespread discomfort among the employees and usually experiences a strong resistance to change. The primary reason being that, over the years, BPR has been used effectively by organizations, however, the first thing that BPR results in is the layoffs. BPR, though a powerful organizational thinking, has not been able to achieve the expectations for the following treasons: The primary assumption of the BPR system is that the single most factors affecting an organizational performance is the inefficiency of its operations. True, processes can always be improved at any level, but that doesnt mean that they are inefficient. It disregards the status quo by looking at an organization from a clean state. It is not an effective tool to focus the improvement strategies on the organizational constraints. As a matter of fact today most organisations are facing great challenges in this regard and they are feeling the need to become more and more competitive through a special focus on organisational design, knowledge management, hierarchical structures performance management as well as quality control. It has always been difficult to find a strategy that encompasses every aspect of this issue. Experts have suggested a number of strategies to manage changing times in organizations. The concept of BPR is one of the latest in this league. We have seen various facets of BPR earlier. Collectively, we can now define BPR as the fundamental rethinking as well as radical redesigning of the business processes that intends to achieve revolutionary improvements in critical aspects of the business with contemporary measures to improve various aspects of performance such as quality, service level, cost and speed (Hammer and Champy, 1993). As this definition suggests, it is desirable on part of the or ganisations to do away with their archaic practices as well as processes, policies, principles as well as structures that negatively affect the performance of the organization. That is why BPR is primarily about redesigning the processes within an organization (Balle, 1995). BPR can also be defined as the re evaluation or redesign of the firms business processes as well as organisational structures in an effort to achieve marked improvements in certain critical success factors namely cycle time, quality, productivity as well as customer satisfaction (Tapscott and Caston, 1993). This particular definition differs from the previous one as it makes a specific reference to the process (Poh and Chew, 1994). It can also be defined as the analysis as well as design of workflows and processes inside the organizations. BPR is basically a tool for planning as well as controlling change (Morris and Brandon, 1993). It offers redesigning and improvement both in depth (i.e. organizational roles and responsibilities, organisational structure, use of technology, appraisal and incentives, shared values as well as skills) and in breadth (i.e. activities that are performed with long term goals in mind) (Hall et al., 1993). Some of the experts take it a step further and explain that BPR is just a part of the necessary steps in the radical alteration of processes (Davenport, 1993). So, there is a need for process innovation in BPR that can lead to new strategies and designs and mobilize both people and technology towards a singular objective (Poh and Chew, 1994). So, we can see that definitions of BPR vary for person to person but overall it involves a renewal of existing processes and involvement of technology as well as strategic thinking. Research Objective: The primary objective of this study is to analyse how implementing BPR can improve process efficiency. BPR involves revamping a process function to a great extent. The process architecture and the associated quality manuals are changed. Implementing such an extensive strategy comes with high initialization costs and time. Customer Service will also be affected during the transition period. I would be performing a cost benefit analysis of the proposed BPR implementation. Secondly, many organizations have been using Business Modelling software based on the concept of Six Sigma. Six Sigma, though very instrumental in being able to improve operational efficiency, is very technical in nature. It is often criticized that it neglects the human factor in a business process and totally focuses on process automation. I have tried to show that BPR and Six Sigma can go hand in hand. These strategic initiatives are to be used by organizations in a complimentary fashion. Research Problem: The research problem that this particular study wished to investigate was to see how process efficiency can be improved within Argos. For that purpose, I worked in the operations function in one of the retail stores of Argos which was allocated to me by the company. I have adopted the principles of Project Management and Business Process Reengineering during this study in order to analyze and then suggest modification in the existing structure. I have prepared a To- Be architecture of the process function, and compared it with the as -Is and proposed recommendations on how the process can be improved with the help of these understandings. Research Questions: Throughout this study, I have sought to answer the following research questions: What are the current drawbacks in the process utility within Argos? Argos has been successful and has done well over the last couple of decades in its field of operations. But that does not mean it has nothing to improve. With time, everything changes and hence even the successful organizations must make certain changes. Moreover, the initial observation of the existing system and interaction with some of the employees there has given some ideas about what is lacking in the situation. How can BPR be used to improve process efficiency within Argos? Here the study will explore the fields that can be targeted for a BPR initiative. This can be the supply chain or the store layout or the organizational structure. It has to be seen which requires it the most and which would suite these procedures. What are the challenges involved? This study would also see the possible difficulties in this implementation procedure and if possible, would try to suggest remedies for the same. How to manage service delivery during the transition stage? Another important issue is to ensure that the system does not become unproductive while going through a transition because it will have significant negative impact the business. So, it would be seen how to manage these issues. About Argos: Argos serves over 130 million customers growing at an annual rate of 20%. 26% of these transact online or through the phone. 18 million families or about two thirds of the English population have an Argos catalogue. It is amongst the most respected Brands of the UK and before being acquired by Home Retail Group, even featured in the FTSE 100 league (Antony and Banuelas, 2002). With over 170 different product groups, Argos is a revolution which has single handedly changed the meaning of cost effective retailing over the past decade. Offering home enhancement and general merchandise products, Argos works on an innovative business model. Customers can browse through the entire catalogue online, buy and pay online. Alternatively, they visit any of the 700 branches, browse through the physical catalogue, check the product availability via the in house kiosks with the product ID, order, pay and collect over the counter. Business turnaround at Argos happened in March 1999, when it was acqui red by GUS plc (Antony and Banuelas, 2002) At that time, Argos was primarily a single channel, store based retailer, selling a smaller range of general merchandise, concentrated primarily on toys, jewellery, house wares and electrical. In 2000, Argos, the GUS home shopping business, Reality UK operations were restructured to form the current business model. In 2000, a financial services wing was set up to offer credit and warranty products to the customers of Argos. Argos is a pre-eminent retail brand in the UK and Ireland. The business runs by leveraging on the economies of scale. This is reflected by the fact that the average transaction size is just around  £30, while the transaction numbers are around 5 per customer in a year (Schroeder, 2003). Leadership in multi channel product distribution continues to be the prime forte of Argos and is the key differentiate to the customers shopping experience, as compared to the competitors, by enabling the customers to shop the way they want. Around 40% of the total sales are through multi channel internet and phone/ store for home delivery. The fastest growing channel, over the years, has been the online reservation for in store collection. The feature is available at every store. Business Process Reengineering: Having explored multiple definitions of the business process reengineering, now let us see various implications of the same. Simply speaking, BPR is a basically a management approach that intends to enhance organizational performance by enhancing the efficacy of business processes across the organizations (Watson, 1993). BPR looks at the existing business processes remaining unattached to them and tries to determine how these processes can be aligned in order to optimize the ultimate performance of the business. Impact of BPR on Business: The prime motive of any business process is to improve productivity and lead to better profitability. BPR is also a way of reorganizing the processes within the business organizations in order to break the traditional barriers in various processes that have been built over the years and hence are very difficult to do away with (Hall et al., 1993). By this process of diluting the functional divisions, BPR makes the businesses more responsive, betters customer services and improves quality. BPR brings about visible structural changes throughout the organization and often obliterates existing frameworks (Hall et al., 1993, Shin and Jemella, 2002). The conventional hierarchical thinking process is removed from the organizations and a process oriented view takes over the organization with the implementation of BPR. So, the work is now defined in terms of the set of processes instead of the functional boundaries in which they exist. This tactical shift can be attributed to changing busines s goals in recent times (Tonnessen, 2000). But it has to be noted that a degree of risk can always be associated with these changes. For example diluting the functional barriers within an organization can disturb existing structure, confuse people and also create insecurity in the upper echelons of the organizational hierarchy. The emergence and prominence of Information Technology has also played an important role in development of BPR process. It has enabled sophisticated re-designing processes which were not possible earlier due to technical or resource limitations (Tonnessen, 2000). So, the business processes must be analyzed with respect to the changes and improvements that IT can provide to them in order to solve existing problems. IT can also increase the value of the information exponentially by making it easier to collect, compose and categorize. Moreover, BPR ultimately redefines the job descriptions in the organization. It might also create a new breed of employees to handle new technologies and make another breed of employees obsolete by replacing the manual systems with technology (Hall et al., 1993, Shin and Jemella, 2002). This is also a cause of concern because it leads to HRM issue like removing or retraining the obsolete employees. So, the employees must work as part of the team and should be empowered to take decisions. So, BPR also necessitates an effort towards building effective teams that work together with close co-operation and for that reason there must a system encouraging socialization and familiarization among the employees at various levels and functions within the organization. Now, let us have a look at some other important concepts that are closely related to BPR and can be useful in this whole process. Six Sigma: The concept of six sigma was initiated by the Motorola Corporation in an effort to improve their quality measures by redacting the rate of defect to about 3.4/million. Basically it meant that if they produced a million pieces of a certain item, there can be a maximum of 3.4 defected items in the lot (Linderman et al., 2002). It was a marked improvement and in fact and audacious one considering the previous benchmark of For Sigma, which allowed up to 6,200 defects per million (Linderman et al., 2002). But it is not only limited to reduction of errors and defects but also about the improvement of the process. It goes beyond the statistical tools as well as metrics it uses and becomes a philosophy that encompasses every activity within the organization and brings about overall improvement in productivity as well as profitability. This process generally includes five different stages namely definition and quantification of the problem, measurement of the performance and determ ination of the defect levels, analysis of data and performance of root cause analysis, improvement of the quantity of defects and controlling the processes in order to ensure continuous sustenance of the improvements that have been achieved. The success and popularity of this concept can be attributed to several factors. It has received widespread acceptance most because it involves the whole management, makes adjustments according to culture as well as employee attitudes, puts special emphasize on organization structure, boasts of standard training facilities on the six sigma methodology as well as the tools, enhances the skills in project management and links the quality control process to the overall business strategy, HRM strategy and customers satisfaction (Antony and Banuelas, 2002). It is also important to use the structured methods, pick the specific processes for implementation of six sigma improvements, employ specialists to work on it full time and relate the financial results as well as other business benefits to the bottom-line (Schroeder, 2003). Some researchers classify Six Sigma as a method of setting and achieving goals (Linderman et al., 2002) and hence emphasize on the importance of the clear and chall enging goals that are strictly specified and made known to everyone involved. This also necessitates other efforts like performance appraisal, rewards, incentives as well as training for the employees to ensure the desired levels of performance. Six sigma was initially introduced in an effort to control the variations as well as the defects in the manufacturing processes. But over the years, even the service industry has employed it with a great degree of success. Especially the financial institutions as well as healthcare organizations have benefited by using this concept. Success of some iconic companies like Motorola and GE has made it a very significant development in the recent decades but it has to be seen that there are still a lot of many other companies have been dissatisfied with the results from their six sigma projects (Hammer, 2002). These failures have been attributed to the lack of involvement of the customers as well as the supplier, lack of coherence with the overall business goals and the use of it just as a tool instead of a complete organizational improvement approach (Velocci, 2002). Also, some of the six sigma processes are not directly linked to the profit making functions of the organizations and henc e are overlooked by the people (Velocci, 2002). Nevertheless, some researchers opine that six sigma is too analytical and less creative and hence we might not be suitable in every case. Benchmarking: It can be defined as the process of continuously measuring and comparing the business processes inside a certain company to the same in one of the leading organizations in the same sector. This is done in order to get a comparative understanding of its own standards so as to identify the problems and implement improvements (Watson, 1993). The American Productivity Quality Centre (APQC) defines it as a systematic as well as continuous measurement process. It is a process of continuously measuring as well as comparing an organizations business processes against the business processes of the leaders in that industry anywhere in the world so as to gain information that can help the organization in taking action to improve its own performance. Benchmarking can be described as a more sophisticated version of reverse engineering of the successful competitive products. Since then, it has evolved as a process of continuous comparison and improvement in the process as well as strategic levels and also with a global point of view. There are several types of benchmarking that are being used in various organizations nowadays namely, internal, external, competitive as well as generic benchmarking (Watson, 1993). Photocopy pioneer Xerox is often credited using this process in the late 1970s when it applied this benchmarked technique with its Japanese partners. Originating in US, benchmarking has gained worldwide acceptance around the world in the last few decades. In the UK, we have seen the initiatives like UK benchmarking index, and Cranfield Best Factory that have worked exclusively on this (Zairi and Ahmed, 1999). The process of benchmarking at its core is a comparison between multiple organizations and their best practices. As a matter of fact it is performing a gap analysis through benchmarking to understand the procedural and strategic differences between itself and another company that it sees as a successful one. Generally it is done between two companies and procedure is generally simple. But in an effort to reduce complexity, it might lose out on the nuances of the trade-offs that might exist between two companies. A spider-web diagram is a method that is more elaborate and it allows multi dimensional analysis and can analyze multiple aspects for different functions (Ahmed and Rafiq, 1998). There are other such tool but they are beyond the scope of this discussion. Irrespective of the tools used in the benchmarking process, some experts allege that it actually limits the levels of ambition. It just aspires to take the company to the level of the best one in the industry but it would not know how to surpass it. Also it is not easy to unanimously define the definition of the best in the industry becau se the best will depend on what criteria is used to decide and also on which year it is measured (Zairi and Ahmed, 1999). Also, there is an issue with the availability of proprietary information from the companies against which the analyzing farm is benchmarked. They might choose not to disclose specific details in order to maintain their competitive advantage and hence this exercise would not have much value (Pulat, 1994). Nevertheless, a lot of companies have been reported to have achieved significant development in their processes using this practice. Companies like Chevron, Hewlett Packard and Hughes Communications have publicly attributed their success to effective benchmarking processes and consequent transfer of industry best practices. Reengineering: We have defined BPR before. But there are many other aspects to the process of reengineering. It differs from most other process improvement approaches as it does not focus on the existing processes but tells us how they should be in order to achieve better performances (Attaran and Wood, 1999). The intention is not to change or fix the errors in the existing processes but to see whether they are necessary at all and if not then come up with a completely different framework (Zinser et al., 1998). So, the key principles reengineering are ambition, focus on the processes, evaluation and questioning of the fundamental assumptions within the organization and the processes, and use of information at a broader level in order to measure the processes (Peppard, 1999). There is also a need for integrating the redesign process with the corporate strategy as well as organizational visions of the underlying business. It has been implemented by several companies in the past with varied degree of success. Nevertheless, both the service sector (Hall et al., 1993, Shin and Jemella, 2002) as well as the manufacturing sector (Hall et al., 1993, Tonnessen, 2000) over the world has applied it. A success story are largely well documented and available easily in the public domain but it is difficult find the details of the failures and hence are very difficult to analyze (Attaran and Wood, 1999, Hammer and Champy, 1993, Zinser et al., 1998). So, we can say that an improper choice of the processes can result in the failure of reengineering. In general, experts suggest a bigger breadth and depth in the process meaning that they should include as many activities as possible to ensure that every aspect of the organization is improved through the process