Entrepreneurship Essay Example | Topics and Well Written Essays - 1500 words - 2

Entrepreneurship - Essay Example Another reason is that someone gets fired or laid off from work and tries hard to get another job. After a year and a half of unemployment benefits now running out and no job in sight, a person has to resort to extraordinary measures to make money or lose the home, car and even the family in some cases. Times can get really hard for these people. Whatever the reason for my finally becoming an entrepreneur, there are certain principles of business and marketing that have to be consolidated first before even getting started. What will I be selling or promoting? That is the heart of my business and, whatever the choice, the product or service must stand out in some way to attract the attention of potential clients (Kiyosaki 2012). My idea is that I would like to start a photography and graphics business as I love digital photography and working with graphics to make unusual and original graphic art. The Entrepreneurial Personality The personalities of entrepreneurs will tend towards tho se who are willing to take risks in order to achieve a goal and I certainly have that characteristic. They also are willing to devise a plan on their own to build a product or service that others will need or want and to put it out there for the entire world to see and comment on. It takes a change of mindset from being an employee where one is told what to do and when to get it done (Kuratko & Hodgetts 1998). That change for me will not be hard to do. ... Entrepreneurial Risk Taker Fig. 1(DCTC 2010) Research must be done on how to proceed and that means finding out what others did and how they did it which is something I have already done. It is one thing to be in an office setting where everything is laid out and most of the hard part is already taken care. An entrepreneur now is in charge of not only developing the product or service, but also the funding, setting up the structure of a business, creating the financial system of operation, designing and building a website for promoting the product and finally, for ensuring its success in the marketplace. At some point, I will hire people to take care of the financial books and office work so I can create the art. All of this takes an organized mind, a lot of determination, a plan of the product or service and a planned structure of the business overall along with marketing procedures (Action Coach 2012). The person therefore, must have the strength and will to take risks, to get back up when falling down, to revise and redevelop as needed, and to study others who may be in the same field or genre of product and service. I have already made some mistakes but view these as a learning process before getting right down to creating my business. Ultimately, I view myself as strong, innovative, utilizing creative thinking in solving problems and always open to making changes for the better without going overboard. It is essential not to grow too fast but only enough that control is maintained over every part of the business (Action Coach 2012). The following table shows what the entrepreneur is typically responsible for within the structural framework of a

Can be on anything to do with microbiology (you can chose the topic) Article

Can be on anything to do with microbiology (you can chose the topic) - Article Example The gold standard for diagnosing typhoid fever is isolation of organism through blood culture. But lack of expertise and equipment for this test makes it unusable in a peripheral setting. Widal test is also useful, but is of no value in endemic areas. Currently, this test is regarded as non-specific and inaccurate. Because of these limitations of the popular tests, several assays and serological tests have been developed but have not been found to be optimal. Thus, the need of the hour with regard to typhoid testing is a test that is not only simple, but also reliable and carried out in small laboratories in the peripheries. Two such tests which merit importance are typhidot M and Diazo tests. In this study, Beige et al prospectively evaluated typhidot M and Diazo tests vis-a-vis blood culture and Widal test in children. In this prospective study, children aged 6 months to 12 years with fever of more than four days duration and with clinical suspicion of fever were enrolled. Those wi th other suspected diagnosis were used as controls.

A Review of the Literature Essay Example for Free

A Review of the Literature Essay Introduction Because the focus on market orientation has steadily increased over the last decade, academicians and marketing managers have begun to debate the effectiveness of market orientation as a profit enhancing strategy. Researchers and marketing managers are attempting to measure the benefits and costs associated with the implementation of market orientation. For researches and managers, the key questions that surround market orientation are whether or not it increases performance, and if so, in which circumstances should market orientation be implemented. In order for market orientation to become a cornerstone of business practices in years to come, these questions must be answered. This review will focus on three articles which address these key questions: Market Orientation and Company Performance: Empirical Evidence from UK Companies by Greenley, G (1995), Market Orientation: Antecedents and Consequences, by Jaworski and Kohli (1993) and The Effect of a Market Orientation on Business Profitability by Narver and Slater (1990). Summary of The Effect of a Market Orientation on Business Profitability by Narver Slater (1990) In The Effect of a Market Orientation on Business Profitability (1990), Narver and Slater address the lack of empirical evidence surrounding the effectiveness of market orientation. They begin the article by stating: market orientation is the very heart of modern marketing management and strategy ? yet to date, no one has developed a valid measure of it or assessed its influence on business performance? as a result, business practitioners have had no specific guidance as to what precisely a market orientation is and what its actual effect on business performance may be. Their study attempts to develop a valid measure of market orientation and its effect on the profitability of the firm. Narver and Slaters study is designed to test the hypothesis that there is a strong correlation between market orientation and profit levels for both commodity and non-commodity businesses. Narver and Slater  hypothesize that market orientation is a one dimensional construct consisting of three behavioral components: customer orientation, competitor orientation and inter-functional coordination. Additionally, they hypothesize that there are two decision criteria: a long term focus and a profit objective. Based on these criteria, Narver and Slater developed a questionnaire which was given to a sample group of 140 strategic business units in the same division of a major Western corporation. They then used statistical analysis to try to determine the correlation between the adoption of market orientation and the increase in profit and overall performance. In order to obtain accurate results, the researchers attempted to limit the influence of the other forces that impact a businesss profit margin; by doing this, they were able to isolate two key variables and find the relationship between them. Based on their data and analysis, Narver and Slater concluded that there is a monotonic relationship between profit and market orientation for the non-commodity business, whereas the relationship with commodity business was only apparent above the stated median in market orientation. Narver and Slater also concluded that market orientation is economical in all environments, and the question was finding the optimal level of market orientation. Critique of The Effect of a Market Orientation on Business Profitability by Narver Slater (1990). Narver and Slaters study is one of the first major empirical studies on the subject of market orientation and its impact on the firms profit. This ground-breaking study offers empirical validation to theories that were unproven prior to the study. However, based on the results of Narver and Slaters study, there are still many questions that remain unanswered. I found that the most significant problem with the study is that their sample was taken from a single corporation, meaning that the data they used was limited to only one industry and one region. As Narver and Slater noted in their conclusion, a sample this limited means that their results can be influenced and skewed by many variables, including corporate culture and regional practices. It is also possible that their findings are industry-specific and do not pertain to other companies outside of foresting. However, in the articles conclusion, Narver and Slater acknowledge these shortcomings and are eager for others in different regions to conduct further research in this field. Although the limited nature of the study makes it difficult to draw any large scale conclusions about the effectiveness of market orientation, Narver and Slater have created a useful model for an empirical study of market orientation which can now be applied to other industries and regions. The most interesting part of the study is not necessarily the results, but the fact that they were able to design the first successful empirical study. Another problem with the study is that Narver and Slater concluded that an equilibrium existed: the point at which the level of market orientation reaches a point at which its cost is equal to its benefit. At this point, any increase of market orientation would only be detrimental to the firms profit margin. Although the study states that the equilibrium is present, the authors offer no guidance on how marketing managers can identify this critical point. Further studies should be dedicated to answering this question in order to make market orientation a more effective strategy for businesses. Additionally, in the articles conclusion, Narver and Slater neglected to discuss a very key finding which surfaced in their data. Their study revealed that market orientation can have a detrimental effect on a companys overall performance when certain market forces and internal conditions apply. In my opinion, this finding was largely ignored in the conclusion in order to validate their original hypothesis: that market orientation has a positive impact on the performance of an organization. Although this finding was acknowledged in the article, I felt the conclusion was somewhat misleading with regard to the outcome of the study in this respect. Summary of Market orientation: Antecedents and consequences, by Jaworski and Kohli (1993) In Market orientation: Antecedents and consequences (1993) Jaworski and Kohli set out to empirically build upon Narver Slaters study. Jaworski and Kohli attempt to study the relationship between market orientation and its effect on numerous aspects of the firm. The authors lay out a series of 13 hypotheses which they attempt to prove within their study. The four hypotheses that dealt directly with the key questions noted in the introduction of this review are: A. The greater the market orientation of an organization, the higher its business performance. B. The greater the market orientation, the greater the (1) esprit de corps and (2) organizational commitment of employees. C. The greater the market turbulence, the stronger the relationship between market orientation and business performance. D. The greater the competitive intensity, the stronger the relationship between market orientation and business performance. The other nine hypotheses are related to the antecedents of market orientation, including managements role on market orientation and the impact the organizations structure and communication has on market orientation. Although these questions are important, I am primarily interested in Jaworski and Kohlis conclusions on whether or not market orientation affects overall performance and profit/return on equity. Jaworski and Kohli set up two samples from which they derived their data. The first sample was made up of executives from 102 companies; the second sample was made up of 230 executives taken from the membership roster of the American Marketing Association. The authors gathered data via a questionnaire that was sent to participants by mail. Based on the data reviewed, Jaworski and Kohli concluded that market orientation is an important determinant of overall performance regardless of factors such as market turbulence, competitive intensity or technological turbulence. However in both samples, the authors found little correlation between market orientation and return on equity and market share. Jaworski and Kohli also found that the commitment of top management towards implementing market orientation is an important factor on the strategys overall performance, as are the levels of interdepartmental coordination and interdepartmental conflict. Critique of Market orientation: Antecedents and consequences, by Jaworski and Kohli (1993) Jaworski and Kohlis study measures the value that market orientation creates for a business. In their introduction, the authors state their intentions quite clearly: The purpose of this research is to address the voids in knowledge [in the Narver and Slater study]. (Jaworski Kohli 1993) In this study, Jaworski and Kohli build upon and answer many of the questions left unanswered in Narver and Slater (1990). In my opinion, one of the most important aspects of Jaworski and Kohlis article is that they attempted to explain their study in an accessible manner by including a section that dealt with the implications of their findings for market managers. Unlike Narver and Slater, I felt that Jaworski and Kohli went to great lengths to try to answer the key questions that managers might have and attempted to lay down guidelines that managers could use in the implementation of market orientation. Jaworski and Kohli also realized the importance of one of the findings Narver and Slater neglected in their conclusion: that market orientation could be detrimental to a business in certain circumstances. Jaworski and Kohli explained the relationships between market orientation and certain environmental contexts including market turbulence and competitiveness. The aspect of the study that I found most interesting was Jaworski and Kohlis discovery that there is neither an association between market orientation and return on equity nor a relationship between market orientation and market share. Although the two authors still concluded that market orientation was beneficial for overall performance, the finding that it does not help return on equity is very significant. Return on equity, for many firms, is the guiding factor in the decision-making process, especially for private equity groups and investment banking firms. Having worked for a private equity firm, where return on equity is the principal goal, I can confidently say these findings are a huge blow to the advocacy of market orientation. However, I would not feel comfortable ruling out market orientation based on one study; further research must be done on this topic. Additionally, I found one aspect of Jaworski and Kohlis conclusion problematic: the authors concluded that market orientation had a direct relationship with overall performance, organizational commitment and esprit de corps, yet they stated that it did not influence return on equity and market share. This finding seems to be contradictory to common business beliefs, which would suggest that if market orientation had a positive impact on commitment, overall performance and esprit de corps, it would therefore have an impact on profit or return on equity. This finding is either misleading or it indicates that common beliefs regarding performance and employee motivation are incorrect. Summary of Market orientation and company performance: empirical evidence from UK companies by Greenley, G (1995) In the article Market orientation and company performance: empirical evidence from UK companies Greenley identifies a clear need for an  empirical study in the United Kingdom. As of 1995, no major empirical research had taken place anywhere but the United States. Greenley created his study based upon this research gap. His basic hypothesis, that market orientation is positively associated with performance, is taken from the aforementioned studies by Narver and Slater (1990) and Jaworski and Kohli (1993). Greenley also tested additional hypotheses from Narver and Slaters 1990 study. The hypotheses Greenley tested dealt with the relationship between market orientation and cost, size of the company, market entry, customer power and competitive hostility in the market. Additionally, he tested hypotheses pertaining to market growth, turbulence and technological change. To obtain his data, Greenley used a slightly altered version of Narver and Slaters 1990 questionnaire, adapted for UK business culture. The questionnaires were sent to 280 top level managers, mainly CEOs. Of those 280 questionnaires, he received 240 usable responses, which made up the data for his study. Based on the analysis he conducted, Greenley concluded that market orientation does not have a direct affect on performance. (Greenley 1995) He also concluded that with high levels of market turbulence, market orientation is negatively associated with return on equity, whereas with low levels of market turbulence, market orientation is positively associated with return on equity. Critique of Market orientation and company performance: empirical evidence from UK companies by Greenley, G (1995) Greenleys study is the first major empirical study of market orientation in the UK, and quite surprisingly, his results were very different than the previous findings of studies conducted in the United States. Any reader of Greenleys study Market orientation and company performance must immediately question whether or not business culture and practices in the UK are so different from their United States counterparts that one strategy empirically proven to work in the United States will be rendered ineffective in the UK. If Greenleys results are accurate, multinational corporations using a centralized control method would have to rethink using market orientation. This, however, does not seem to be the case. Proctor and Gamble (PG) appear to successfully implement global strategies, including market orientation, profitably. Therefore, I propose that Greenleys inability to find a positive relationship between market orientation and performance is a result of a problem in his data collection process. As Greenley stated in his conclusion, his data was gathered during a recession, and therefore a managers thoughts on a long-term profit schemes such as market orientation might have been skewed. Also, Greenley obtained nearly 60 percent of his data from top level CEOs and Chairmen, a different sampling base than previous studies in the United States. For instance, Narver and Slater used CPUs and Jaworski and Kohli primarily used market managers for their samples. The difference in sample bases significantly impacts the results of Greenleys study; typically, CEOs and top management, like those that Greenley questioned, are not as involved in the day-to-day implementation of market orientation and tend to be short-term profit oriented. Managers lower on the organizations hierarchy, such as marketing managers, might have a more direct involvement with the implementation of market orientation. For future research, I think it would be more prudent to take a broader sample of managers at all levels, thereby eliminating any bias that can occur when only sampling a certain section of the managerial hierarchy. Another problem that I found in Greenleys conclusion was the fact that he did not make the individual participants aware of the studys purpose. Although he intended for this to be a tool for gathering accurate and unbiased data from participants, I believe this strategy actually had the opposite effect, given the timing of his article. During a recession, CEOs and Chairmen are attempting to regain short term profitability and/or attempting to scale down costs in order to survive until the recession ends. At such a time, market orientation would not be a viable option and it is unlikely that the top management Greenley questioned would consider it a useful strategy. Therefore, the data collected by Greenley during this period would have little or no relevance for the measurement of the effectiveness of market orientation outside of a recession. Conclusion All three of the articles discussed deal with the task of empirically studying the relationship between market orientation and its effects on businesses. Narver and Slater produced the first major study in this field and their research became a significant starting point for future studies. Narver and Slaters article stated that they found a direct relationship between marketing orientation and performance; however, the study also brought to light many holes in their research and aspects of this relationship which needed further study. Jaworski and Kohlis 1993 study attempted to answer some of the key questions that arose from Narver and Slaters article. The questions Jaworski and Kohli addressed included why some organizations are more market oriented then others and whether or not the linkage between market orientation and business performance depend on the environmental context. The Greenley study in 1995 was the first major study done outside the United States. Greenley followed Narver and Slaters model in his attempt to empirically study market orientation in the United Kingdom. While his methods were the same, Greenleys research produced very different results than that of Narver and Slater, and only agreed with some of Jaworski and Kohlis conclusions. In my opinion, Greenleys research only added to the confusion that surrounds the study of market orientation; the differences in his results can be attributed to many factors, including gaps in previous research, differences between the United States and the UK, or differences in the economy at the time of the studies. The ambiguous results of this study confirm the need for more research in order to answer the key question of market orientations relationship with performance and profit. Therefore, after reading and critically reviewing the above articles, my conclusion is that further empirical research must be done in order for there to be any confidence in the use of market orientation as a performance-enhancing strategy. A multi-national study or the study of multiple multinational companies would provide valuable insight into whether market orientation is exclusively suited to companies operating in the United States or if its implementation in different countries can also be profitable. Further research must also be done in order to affirm or refute Jaworski and Kohlis claim that market orientation has no positive relationship with market share and return on equity. I believe that if Jaworski and Kohlis claim is true, managers, especially those operating publically traded companies, will inevitably need to rethink the use of market orientation within their corporations. List of References Greenley, G. (1995). Market orientation and company performance: empirical evidence from UK companies. British Journal of Management, 6:1-13. Jaworski, B. and Kohli, A. (1993). Market orientation: antecedents and consequences. Journal of Marketing, 57(July): 53-70. Narver, J. and Slater, S. (1990). The effect of a market orientation on business profitability. Journal of Marketing 54(October): 20-35.

Analysis of the Doppler Effect

Analysis of the Doppler Effect Assignment 3: topics and themes in physics- oscillations and waves Doppler radar A Doppler radar is specialized radar that uses the Doppler Effect to produce data about an objects velocity at a given distance. Doppler radar works by bouncing microwave signals at the desired target and then listening to its reflection, then the returning frequency is analysed to see how it has changed from the original signal. This variation gives direct and highly accurate measurements of the radial component of a targets velocity relative to the radar. The Doppler effect (or Doppler shift), named after the famed Austrian physicist Christian Doppler who proposed it in 1842 and is the difference between the observed frequency and the emitted frequency of a wave for an observer moving relative to the source of the waves. It is commonly heard when a vehicle sounding a siren approaches, passes and dulls from an observer perspective. When a wave with angular frequency ω and phase velocity c propagates in a medium, an observer moving with velocity v parallel to c experiences a shifted frequency ω1 = ω (1 − v/c) (1). They do not depend on the relative velocity as other circumstances do occur. Electromagnetic waves share with sound the same property which is propagation velocity. It is independent of the motion of the source . Einstein formulated his extended principle of relativity stated that all physical and electromagnetic forces should depend on relative velocities. From this he created Lorentz transformation. Sound vs. Light There are three differences between acoustical (sound) and optical (light) Doppler effects: The optical frequency change is not dependent on which is moving the source or observer either is it affected by the medium through which the waves are moving, but acoustical frequency is affected by these things. Optical frequency changes are affected if the source or observer moves at right angles to the line connecting the source and observer. Observed acoustical changes are not affected in such a situation. Applications of the Doppler phenomenon include the Doppler radar and the measurement by astronomers of the motion and direction of celestial bodies. Light itself travels at 186,000miles a second (, but unlike sound light doesn’t need to travel through a medium. Whereas sound cannot be transmitted into space light can be in the form of radiation and also a form of energy that is put through a vacuum. The Doppler effect of light is more commonly known as the relativistic Doppler Effect. The Doppler Effect In Astronomy In astronomy, the Doppler Effect was originally studied in the visible part of the electromagnetic spectrum. Today we can the see the use of the Doppler shift(Doppler effect) applies to all parts of the electromagnetic spectrum. Also, because of the inverse relationship between frequency and wavelength, we can describe the Doppler shift in terms of wavelength. Radiation is red shifted when its wavelength increases, and is blue shifted when its wavelength decreases. Astronomers use Doppler shifts to calculate very accurately at what rate stars and other astronomical objects are moving towards or away from Earth. For example the spectral lines emitted by hydrogen gas in distant galaxies is often observed to be considerably red shifted. The spectral line emission, normally found at a wavelength of 21 centimetres on Earth, might be observed at 21.1 centimetres instead. This 0.1 centimetre redshift would indicate that the gas is moving away from Earth at over 1,400 kilometres per second (over 880 miles per second). The red shift As an object moves further away from an observer the light waves emitted are affected by the Doppler Effect. In 1923, American astronomer and physicist Edwin Hubble (1889-1953) observed that the light waves from distant galaxies were shifted so much to the red end of the light spectrum that they must be moving away from the Milky Way, the galaxy in which Earth is located, at a high rate.(10) After these finding he then furthered his studies and came up with a mathematical formula in which he could determine how far away and at what rate they were moving away from the galaxy and how far towards the red shift. This formula is known as Hubble’s constant. From this a lot of other astronomers have come together and came up with the theory that the universe emerged instantly in a sort of bang, therefore coming amount the big bang theory. My research of galaxies the sun itself contains helium. This is proven as on the spectrum scale there are black lines in which the sun has absorbed light through the helium The Doppler Effect in aerospace Sonic booms, usually produced by airplanes passing through the sound barrier, are another example of the Doppler Effect. As a plane approaches the sound barrier the sound waves become increasingly compressed at the front of the plane. Pilots have also reported that they feel noticeable wall or barrier as they approach the speed of sound, and this is due to this intense compression of the sound waves. When the plane reaches the speed of sound, and passes through, it is said to go supersonic. There have been high speed photos taken of high velocity objects such as planes and bullets approaching, then breaking through the sound barrier. In these, the compression of the sound waves are clearly shown in the front, with the concomitant lengthening at the rear, just as would be expected by the Doppler Effect. Doppler Navigation System uses the Doppler effect to measure an aircrafts ground speed and heading. The Doppler radar functions by continuous measurement of Doppler shift and converting the measured values to groundspeed and drift angle. In early systems the aircrafts departure point was loaded into a navigation computer, which then converted the aircrafts heading and Doppler ground speed/drift inputs into a continuous display of aircraft position; this was then displayed as latitude and longitude, and/ or as distance to go along track and position left or right of track, in nautical miles. Aircraft navigation systems such as these are very important because they are key in getting the aircraft from one location to another safely. Doppler navigation is also one of the systems that air traffic controllers use, its allows then to see an aircraft’s exact heading, air speed and altitude. This allows the aircraft controller to give keep aircraft in clear and uncongested air which s ignificantly reduces the chances of in air collisions. DOPPLER RADAR The police also utilise the Doppler Effect in the form of Doppler radar to calculate the speed of passing car and to check whether they are obeying the speed limits. This technology is not only used by the police but also by meteorologists. The change in frequency experienced as a result of the Doppler effect is exactly twice the ratio between the velocity of the target (for instance, a speeding car) and the speed with which the radar pulse is directed toward the target. From this formula, it is possible to determine the velocity of the target when the frequency change and speed of radar propagation are known. The police officers Doppler radar performs these calculations; then all the officer has to do is pull over the speeder and write a ticket. The development in Doppler radar has also helped to helped to eliminate aviation crashes associated with microburst. A microburst is a very localized column of sinking air caused by a small and intense downdraft within a thunderstorm. The crash Delta Air Lines Flight 191 , which a microburst was the primary cause for the crash of the Lockheed L1011 Tri-Star was key factor in the push for developing microburst detection system. As a result of the crash, planes are now fitted with Doppler radar as standard. It allows pilots to prepare for microburst and allows then to increase power to the engines to stop the plane from crashing. The Doppler radar system of the plane is usually located in the planes ray dome. Meteorology Meteorologists use Doppler radar to track the movement of storm by detecting the direction and velocity of raindrops or hail, for instance, Doppler radar can be used to determine the motion of winds and, thus, to predict weather patterns that will follow in the next minutes or hours. But Doppler radar can do more than simply detect a storm in progress: Doppler technology also aids meteorologists by interpreting wind direction, as an indicator of incoming storms. Meteorologists use a similar principle to read weather events. In this case, the stationary transmitter is located in a weather station and the moving object being studied is a storm system. This is what happens: Radio waves are emitted from a weather station at very specific frequency. The waves are large enough to interact with clouds and other atmospheric objects. The waves strike objects and bounce back toward the station. If the clouds or precipitation are moving away from the station, the frequency of the waves reflected back decreases. If the clouds or precipitation are moving toward the station, the frequency of the waves reflected back increases. Computers in the radar electronically convert Doppler shift data about the reflected radio waves into more useful pictures which show wind speeds and direction. Doppler radars are also a lot more sensitive to movement of targets in general, whether they are moving towards or away from the radar site which things such as birds, insects, or just clouds when they are operated in certain modes. Doppler radars measure a targets velocity, which both is the speed of movement the direction that its moving. These types of radars allow meteorologists to see a lot of the in detail movements that go on inside thunderstorms, this then allows the meteorologists to predict how those thunderstorms will behave in the future. Doppler Echocardiogram A traditional echocardiogram uses sound waves to produce fairly accurate images of the heart. In this procedure, a radiologist uses a transducer to transmit and receive ultrasound waves, which are reflected when they reach the edge of two structures with different densities. The image produced by an echocardiogram shows the edges of heart structures, but the down side it cannot measure the speed of blood flow as it makes its way through the heart. In a Doppler echocardiogram, sound waves of a certain frequency are transmitted into the heart. The sound waves bounce off blood cells moving through the heart and blood vessels. The movement of these cells, either toward or away from the transmitted waves which then results in a frequency shift that can be measured. This helps cardiologists determine the speed and direction of blood flow in the heart which is the most significant difference between the traditional echocardiogram and a Doppler echocardiogram. Transverse and longitudinal waves A transverse wave is a moving wave that consists of oscillations occurring at right angles to the direction of energy transfer. If a transverse wave is moving in the positive x-direction, its oscillations are in up and down directions that lie in the y–z plane. For transverse waves in matter the displacement of the medium is at 90 degrees to the direction of propagation of the wave. A ripple in a pond and a wave on a string are easily visualized forms of transverse waves. Examples of transverse waves include S (secondary) waves, and the motion of the electric (E) and magnetic (M) fields in an electromagnetic plane wave, which both oscillate perpendicularly to each other as well as to the direction of energy transfer. Conclusion In conclusion this reports through my many hours of research, talks in detail about the history and the useful applications of it. Aircraft and aerospace engineering as they use Doppler radar is a very interesting and a wide range of applications and I have toughly enjoyed researching about it especially since these are topic areas which i am particularly interested and other practical uses with the speed guns used in the police force and also the sirens on the motor vehicles. The application of the Doppler Effect and its applications in aerospace are a very interesting subject and something which i very much look forward to looking and working on in am going into university.

Stereotypes Essay -- essays research papers

To adequately investigate the question as to whether stereotypes are the psychological lubricant on intergroup behaviour, several areas need to be considered. In the context of this essay the concept of stereotypes needs to be defined. Although Lippmann (1922) is credited with first using the term 'stereotype' in this context it is perhaps Brown (1995) who offers the most applicable definition when he wrote that "to stereotype someone is to attribute to that person some characteristics which are seen to be shared by all or most of his or her fellow group members." (p.83). With this definition in mind this essay will, firstly, in an attempt to address the question make a brief review of some of the research that has been conducted on the formation of stereotypes. Secondly, this essay will move onto examine the function of these stereotypes in the individual, both from the perspective of intergroup conflict and also in intergroup co-operation. Thirdly this essay will also exa mine the research that has been carried out into the persistence of stereotypes. Because of the vast amount of research that has been conducted in this area, this essay will, as far as possible, concentrate primarily on the more recent research conducted within the last decade. It appears from some of the research (for example Hamilton and Gifford, 1976; Hamilton and Sherman, 1989 and Chapman, 1967) that stereotypes are often derived from an over-awareness of statistically infrequent events. More specifically that if an event occurs infrequently amongst a group then it is remembered more vividly than events which might occur on a more regular basis. In a study carried out by Hamilton and Gifford (1976) they divided their participants into two groups with a disproportionate number of participants in the first group. The participants were then informed of a number of desirable and undesirable behaviours. It was found that despite the fact that members of both groups were just as likely to engage in undesirable activities an 'illusionary correlation' of the smaller group meant that a far higher number of these activities was perceived. Schaller and Maass (1989) found that this illusionary correlation would occur for positive as well as negative traits, al though not when the perceived negative trait was perceived to be associated with the in-group, o... ...m. British Journal of Social Psychology, 36, 107-117. * Schaller, M., & Maass, A. (1989) as cited in Maass, A. & Schaller, M. (1991) Intergroup biases and the cognitive dynamics of stereotype formation. European Review of Social Psychology, 2, 190-206. * Snyder, M. & Miene, P. K. (1994). Stereotyping the elderly: A functional approach. British Journal of Social Psychology, 33, 62-82. * Tajfel, H. (1969) as cited in Haslam, S. A., Oakes, P. J., McGarty, C., Turner, J., C., Reynolds, K., J. & Eggins, R., A. (1996). Stereotyping and social influence: The mediation of stereotype applicability and sharedness by the views of in-group and out-group members (1996) British Journal of Social Psychology, 33, 369-397. * Tajfel, H. & Turner, J. C. (1979) as cited in Platow, M. J., Harley, K., Hunter, J., A., Hanning, P., Shave, R. & O'Connell, A. (1997). Interpreting in-group-favouring allocations in the minimal group paradigm. British Journal of Social Psychology, 36, 107-117. * Turner, J. C. (1987) as cited in Maass, A. & Schaller, M. (1991) Intergroup biases and the cognitive dynamics of stereotype formation. European Review of Social Psychology, 2, 190-206. Stereotypes Essay -- essays research papers To adequately investigate the question as to whether stereotypes are the psychological lubricant on intergroup behaviour, several areas need to be considered. In the context of this essay the concept of stereotypes needs to be defined. Although Lippmann (1922) is credited with first using the term 'stereotype' in this context it is perhaps Brown (1995) who offers the most applicable definition when he wrote that "to stereotype someone is to attribute to that person some characteristics which are seen to be shared by all or most of his or her fellow group members." (p.83). With this definition in mind this essay will, firstly, in an attempt to address the question make a brief review of some of the research that has been conducted on the formation of stereotypes. Secondly, this essay will move onto examine the function of these stereotypes in the individual, both from the perspective of intergroup conflict and also in intergroup co-operation. Thirdly this essay will also exa mine the research that has been carried out into the persistence of stereotypes. Because of the vast amount of research that has been conducted in this area, this essay will, as far as possible, concentrate primarily on the more recent research conducted within the last decade. It appears from some of the research (for example Hamilton and Gifford, 1976; Hamilton and Sherman, 1989 and Chapman, 1967) that stereotypes are often derived from an over-awareness of statistically infrequent events. More specifically that if an event occurs infrequently amongst a group then it is remembered more vividly than events which might occur on a more regular basis. In a study carried out by Hamilton and Gifford (1976) they divided their participants into two groups with a disproportionate number of participants in the first group. The participants were then informed of a number of desirable and undesirable behaviours. It was found that despite the fact that members of both groups were just as likely to engage in undesirable activities an 'illusionary correlation' of the smaller group meant that a far higher number of these activities was perceived. Schaller and Maass (1989) found that this illusionary correlation would occur for positive as well as negative traits, al though not when the perceived negative trait was perceived to be associated with the in-group, o... ...m. British Journal of Social Psychology, 36, 107-117. * Schaller, M., & Maass, A. (1989) as cited in Maass, A. & Schaller, M. (1991) Intergroup biases and the cognitive dynamics of stereotype formation. European Review of Social Psychology, 2, 190-206. * Snyder, M. & Miene, P. K. (1994). Stereotyping the elderly: A functional approach. British Journal of Social Psychology, 33, 62-82. * Tajfel, H. (1969) as cited in Haslam, S. A., Oakes, P. J., McGarty, C., Turner, J., C., Reynolds, K., J. & Eggins, R., A. (1996). Stereotyping and social influence: The mediation of stereotype applicability and sharedness by the views of in-group and out-group members (1996) British Journal of Social Psychology, 33, 369-397. * Tajfel, H. & Turner, J. C. (1979) as cited in Platow, M. J., Harley, K., Hunter, J., A., Hanning, P., Shave, R. & O'Connell, A. (1997). Interpreting in-group-favouring allocations in the minimal group paradigm. British Journal of Social Psychology, 36, 107-117. * Turner, J. C. (1987) as cited in Maass, A. & Schaller, M. (1991) Intergroup biases and the cognitive dynamics of stereotype formation. European Review of Social Psychology, 2, 190-206.

Cuban Missle Crisis Essay -- essays research papers

Cuban Missile Crisis Nikita Khrushchev and the Cuban Missile Crisis The Cuban Missile Crisis of 1962 was the closest the world ever came to full-scale nuclear war. When the Soviet Union placed offensive nuclear missiles in Cuba, President Kennedy interpreted the act as one of hostility that would not be tolerated. However, the situation was blown way out or proportion by the president, American media, and ultimately the citizens of the United States. The Soviet Premier, Nikita Khrushchev, was reacting to the Bay of Pigs Invasion of Cuba, US Missile installations along the Turkey/Soviet border, and the clear anti-Communist policy of the United States. Khrushchev was born in Kalinovka in southwestern Russia. He was raised in a poor family whose income depended solely on the coal mining job of his father. In 1918 he joined the Bolsheviks and attended a Communist school the following year. He moved to Moscow in 1929 and began working for the Communist government. He gained much praise and advanced quickly. B y 1939, he was a member of the Politburo. He became Secretary of the of the Central Committee in 1951. After Stalin died in 1953, the USSR went through two more premiers before Khrushchev came to power in 1958. As Premier, Khrushchev publicly condemned the terror filled reign of Stalin. Stalin continually pushed for domination. Several Eastern European countries united with the USSR under Stalin’s reign and millions of innocent people were slain. Stalin also restricted Soviet citizens personal liberties to previously unheard of measures. Khrushchev was a completely different ruler. He acridly criticized Stalin’s crimes against humanity and began a rapid process known as destalinization. This entailed destroying statues, pictures, or images of Stalin and renaming most things previously named for Stalin. Khrushchev also restored many of the personal liberties that Stalin had taken away. He let political prisoners free, restored much freedom of thought, and restored freed om of the press. He increased production in factories and placed a strong emphasis on the Soviet space program. Although he had little pity for small, weak Europe and Asian countries, he worked to avoid war with Western nations. He even called for a â€Å"peaceful coexistence† with the United States. Khrushchev, despite being communist, was concerned for the welfare of his country and did no... ...ve the missiles if the US missiles were also removed. This created intense public opposition to the Soviet leader as he was made out to be much more militant than he actually was. He was simply fighting fire with fire, but the government and media prevented the public from having the truth. It looks almost like a blatant attempt to manipulate the American public by over-dramatizing a situation for which US government was predominately responsible. Kennedy threatened invasion and he would have had support of the entire nation if he had proceeded with this plan. Khrushchev obviously didn’t want war as he eventually agreed to remove the missiles and allow the US to have a nuclear advantage. Why would Khrushchev agree to remove the missiles without any US promise to remove their missiles or not to invade Cuba? The answer is obvious. Khrushchev did not want war with the United States. He was a vast improvement over Stalin as a Premier and had restored much freedom to his countr y. He wasn’t a mad killer like Stalin and simply wanted to protect the citizens of his country, unlike Stalin had. The US government, however, wanted the media and public to think otherwise. They succeeded.

Point of Sale System (POS) Essay

Introduction Point of sale (POS) or checkout is the place where a retail transaction is completed. It is the point at which a customer makes a payment to a merchant in exchange for goods or services. At the point of sale the merchant would use any of a range of possible methods to calculate the amount owing – such as a manual system, weighing machines, scanners or an electronic cash register. The merchant will usually provide hardware and options for use by the customer to make payment. The merchant will also normally . issue a receipt for the transaction.[http://en.wikipedia.org/wiki/Point_of_sale / Retrieve on February 6, 2013] A Point of Sale (POS) system is a system for managing the sales of retail goods. A POS manages the selling process by a cashier accessible interface. The same system allows the creation and printing of the receipt using the POS printer. The Problem The problem is that many retail stores uses manual sales transaction which result to inaccurate calculation and lost of profit in their business. Manual managing stocks takes a lot of time which is very hassle. Statement of the Problem 1. What are the methods in creating Point of Sale System? 2. How the methods are integrated and implemented to the system? 3. How to test and evaluate the efficiency of the Point of Sale System? Objectives 1. To be able to identify the methods in creating Point of Sale System. 2. To be able to integrate and implement the identified methods to the system. 3. To be able to test and evaluate the efficiency of the Point of Sale System. Definition of Terms 1. Point of Sale (POS) – A system that make sales transaction and manage stocks. 2. Sale Transaction Retail software in which a customer exchanges an agreed amount for an item. 3. Receipt – a piece of paper that shows the item being sold. 4. Cashier A person who receives and pays out money works at a POS. 5. POS Printer A machine that prints a receipt from a computer. 6. Database- Storage of data of the POS. 7. Stock-supply of goods available for sale.