Tuesday, May 5, 2020
Impact of Brand Equity on Consumer Behavior â⬠MyAssignmenthelp.com
Question: Discuss about the Impact of Brand Equity on Consumer Behavior. Answer: Introduction: Brand equity is defined as the commercial value that derives from consumer perceptions about the brand name of a particular product or service. The concept of brand equity does not rely on the product or service itself, rather than doing this, brand equity focuses on the brand image and consumer perception about the product or services (Freling Forbes, 2013). The marketing industry is greatly influenced by the concept of brand equity which decides the success and failure of the business deals their future development perspectives. The brand name can easily generate revenues from the simple brand recognition. The products having higher brand value earn more revenues rather than a product having great quality without a bradn name. Brand equity refers to the value of brands. In contrast with these facts, bradn equity is studied from two distinct perspectives, such as Cognitive Psychology and Information Economics (Godey et al., 2016). In accordance with the definition of Cognitive Psychology, the brand equity depends on the awareness of consumers in case of brand features and offerings of the brands. Whereas, Information Economics states that brand names are itself a signal for signifying the quality of product. Consumer Behavior Consumer behavior is defined as the study of individual and groups who are using, selecting and disposing the products, services and ideas for satisfying their needs and demands. Consumer behavior has important relation with the marketing trends and concepts. Marketers understand the consumer behavior while doing some surveys about their products and making their policies popular within the market (Goh et al., 2013). The marketing professionals get trained for understanding the needs and functional demands of consumers within various segments of markets. Marketing professionals changes their strategic moves and development process of strategies according to the variations of demands of consumers. These strategies guide them to declare some products as obsolete and as a result of this fact, some new products and services are introduced within the market place with respect to the consumer demands. Impact of Brand Equity on Consumer Behavior According to Chovanova, Korshunov and Babcanova (2015), In between the year of 2009 and 2014, the complex research on brand management was conducted within Slovak republic at the Faculty of Materials Science and Technology, Slovak University of Technology. This survey revealed that the 52. 2% males, 47.8% females and more than 18 years old Slovak inhabitants are attracted towards the brand value and their responses are towards the organizations those are having high amount of bradn value for their products and services. The consumer behavior changes the entire production of any organization and also it mandates the functional strategies that are taken by the organizations for managing their brand concerns within their competitive target market. These decisional aspects maximize the market share with respect to the organizational objectives and consumer demands from their market premises (Huang Sarigll, 2014). The consumer based brand equity is come up with significant development in the field of knowledge based and strategic branding of products and service within any organization. The following figure shows the impactful decisions of different authors about consumer based brand equity. According to Rehman (2016), due to increased competencies within the sector of mobile phone manufacturing business there is one question that is getting raised in the contemporary time is that is brand equity is motivating this business or purchasing behavior of individual?. In contrast with various evidences about this fact, this aspect is highlighted that brand equity is entirely influencing the development of consumer behavior with respect to various functional areas of involvements within the competitive market. The above figure is showing significant process of managing brand value and brand management within the technical sound industry where phone manufacturing processes are prioritized with respect to consumer demands and functional aspects. There is various significant resources information that is made available within the web or journal articles. The above figures and functional aspects are showing the impacts and behavioral analysis of the consumer behavior for identifying their responses over the target markets. In accordance with the findings and analysis of the research topic, following are the concerned hypothesis identified for this research process: H1: Brand Equity of Apple is impacting on the consumer behavior H0: Brand Equity of Apple is not impacting on the consumer behavior The entire research process is based on the secondary data collection about the impact of brand equity on consumer behavior of organizations. In contrast with this fact, the consumer behavior has been studied within this report with respect to various functional aspects involved within organizational behavior and functionalities involved within their target market (Brodie et al., 2013). In contrast with these facts, the research process is arranged with respect to critical literature review based on the definitions of bradn equity and consumer behavior. The literature review is linking the research objective with the general concepts of consumer behavior and brand equity involved within any organization (al Adams, 2014). The crucial objective of this report is to analyze the crucial factors of brand equity that are impacting on the consumer behavior of Apple. In contrast with this fact, the general description about brand equity and consumer behavior discussed in the segment of lite rature is helpful to the researcher in finding and collecting raw data that shows impact of Apples brand equity on their consumer behavior. Methodology used by this research This project report is focusing on the qualitative methods as there are various secondary resources which are being used within this research topic for understanding the impact of brand equity within the consumer behavior. The brand equity of Apple is greatly impacting on their consumer behavior with respect to the standards of products and quality of services (Freling Forbes, 2013). This report is describing the process analyzing the impact of brand equity on consumer behavior of Apple. The finding and analysis shows the collection of data sets that supports the objectives of the research process. This research has considered the impact of brand equity on consumer behavior of Apple. In order to convey these aspects and funding, various research papers, journals and annual report of Apple are studied in order to collect data from those resources. The aim of this research is to make an analysis on the impact of Apples brand equity on the consumer behaviors in purchasing the products of Apple. Various secondary sources of information are used for conveying this research that is readily available within websites (Chovanova, Korshunov and Babcanova 2015). These data are viewed as the raw data involved within research process for supporting the research objectives and aims. Some of the resources that are reviewed in this research are Apple Inc. website, annual report, Australian Bureau of Statistics (ABS) report etc. In addition to this, previous research papers that are published on Apples consumer buying behavior and brand equity are used within this research process for collecting data. The Annual report of Apple is helpful in identifying the growth of revenues of Apple. According to Apple Press Info published in the site of Apple Inc. in the year of 2015, Apple was announced their financial results for its fiscal 2015 fourth quarter ended sin September 26, 2015. The company earned revenue of $51.5 billion in that year. The net profit from this was 11.1 billion dollar (Titcomb, 2015). The above figure shows the net growth of iPhone from 2011 to 2015. This reveals that in the year of 2011 Apple had growth revenue about $108.2 billion and profit $25.9 billion, in 2012 revenue was $156.5 billion and profit was 41.7 (Titcomb, 2015). In accordance with all of these data this growth of revenues and profit got higher values in the year of 2015, revenues- $233.7 billion and profit- $53.4 billion. All of these figures are showing the growth consequences about Apple that reveals high demands for the Apple products among their consumers. iPhone is one of the most popular products of Apple that is gaining high revenues in comparison with other smart phones available within the market. The above figure is showing the sales growth of iPhone in between the year of 2011 to 2015. In the year of 2011, the sales for iPhone were 16.2 million (Titcomb, 2015). This amount of sales got increased in the year of 2015 and it was 74.5 million. These raw data reveals that the demands for Apple phones and products are getting increased in the contemporary times with respect to the demands of consumers. The consumers are getting attracted towards Apple as they are finding interesting offers and functionalities among Apple Products. There are various consequences that need to be managed with respect to branding of company images. In contrast with this fact, Apple is one of the worlds leading organizations that manufacture phone and other electronic devices for grabbing customer attention. There are three objectives that are considered as building block of this research process. These research objectives are linked with specific sections that are covered within this research project. The analysis for finding the purpose of brand equity within organizations are elaborated within the literature review section for managing different developmental aspects and functional areas of development within different organizations (Freling Forbes, 2013). Apple has also followed some specific set of strategies and functional steps that are elaborated from general perspectives of phone manufacturers within competitive market. Identification of branding strategies are covered within the third section of the literature review which states that the branding strategies can motivate the user interests and gain functional advantages from significant areas of markets. The emotional branding strategies of Apple are motivating the consumer behavior with respect to their changing behaviors and functional demands of individuals (Godey et al., 2016). Apple always prioritizes the demands significant development of user interests and they provides effective innovations for make the users motivated with respect to their new developments. Linking to objective To understand the purpose of building brand equity This aspect is analyzed in the first part of the literature review that states which is defining the brand equity concepts with respect to marketing and organizational trends. In contrast with these facts, the literature review is elaborating purpose of building brand equity within organizations for managing organizational development as well as for managing customer satisfaction. The section Brand Equity is mainly answering this segment of objective. Linking to objective To identify branding strategies that is followed by Apple in order to create brand equity among consumers The identification of branding strategies that are followed by Apple for creating brand equity among consumers is identified in the section of Consumer Behavior and Impact of Impact of Brand Equity of Phone Manufacturers on Consumer Behavior which is generalizing impact of strategies that are included within the phone manufacturing industry. Therefore, this aspect can be easily related to Apple as they also focus on their strategy selection of attracting consumers. Linking to objective To analyze how brand equity of Apple influences consumers buying behavior This objective can be linked with the section of Impact of Brand Equity of Phone Manufacturers on Consumer Behavior. This aspect can be considered as the impactful area that needs to be considered by Apple as they needs to study the consumer behavior with respect to various functional aspects of consumer behavior. According to the findings from different resources such as Apple Inc websites and different journal papers, this is highlighted that the brand equity of Apple is impacting on the consumer behavior of their products. Different collected data sets and functional analysis on those data highlights the impactful situation on the consumer behavior of Apple.r This hypothesis is considered as the null hypothesis and according to the data collection and findings from the research it is highlighted that the consumer behavior is changing due to the impactful brand equity of Apple. Conclusion This research is showing all the elaboration about different research questions that are considered within this research process. The contexts are elaborated as follows: Fist research question is elaborating about the purpose of creating brand equity. According to the findings from this research process, this is identified as that Apple has increased their revenues by 51 million in the year of 2014. Therefore, this figure shows that Apples consumer behavior changes accordingly with the concept of brand equity. The second research question states about the strategies used by Apple that improves their bradn equity among their customers. This aspect is analyzed that Apple uses consumer friendly branding strategy that manages their consumer behaviors. The third research question is elaborating about the process that Apple follows for managing consumer experiences. This aspect is managed with respect to the different figures that are highlighted in the data analysis part of this research. In the year of 2015, total 74.5 billion iPhones has been sold that shows the attractive consumer behavior towards their products. This can be concluded that this research paper is consists of mainly two parts of project contexts and project proposals. Project context is nothing but the elaboration about my project profession as one marketing professional. Apart from this part of the assignment, the project proposal is elaborating about impact of brand equity on consumers buying behavior: an analysis of Apple. These second part is mainly focused within this project report. The literature review of this assignment is dependent on the secondary resources and the concerned data from secondary resources are critically analyzed within this report. The research is only trying to analyze the impact of brand equity on the consumer behavior of Apple. However, there are various other aspects such as brand quality, brand pricing and other important related to brand values that also need to be studied. Apple should focus on network connectivity of their sales and revenues growths. The organizations should utilize their brand image in order to innovate new things among consumers. The strong innovations process can only be successful if significant threats to Apples business are minimized. References Brodie, R. J., Ilic, A., Juric, B., Hollebeek, L. (2013). Consumer engagement in a virtual brand community: An exploratory analysis.Journal of Business Research,66(1), 105-114. al, B., Adams, R. (2014). The Effect of Hedonistic and Utilitarian Consumer Behavior on Brand Equity: TurkeyUK Comparison on Coca Cola.Procedia-Social and Behavioral Sciences,150, 475-484. Chovanova H.H., Korshunov I. A. and Babcanova D., (2015). Impact of Brand on Consumer Behavior. Ac.els-cdn.com. Retrieved 16 May 2017, from https://ac.els-cdn.com/S2212567115016767/1-s2.0-S2212567115016767-main.pdf?_tid=1639e7b4-3a2d-11e7-a36c-00000aacb35dacdnat=1494935277_122ff55ff32068a7c8d217fa5d72a24c Department of Employment. (2012). Advertising and marketing professions (Source: ABS LFS, Department of Employment trend data to November 2015). Retrieved from https://joboutlook.gov.au/occupation.aspx?search=alphatab=statscluster=code=2251graph=EG. Freling, T. H., Forbes, L. P. (2013). An empirical analysis of the brand personality effect.Journal of Product Brand Management. Godey, B., Manthiou, A., Pederzoli, D., Rokka, J., Aiello, G., Donvito, R., Singh, R. (2016). Social media marketing efforts of luxury brands: Influence on brand equity and consumer behavior.Journal of Business Research,69(12), 5833-5841. Godey, B., Manthiou, A., Pederzoli, D., Rokka, J., Aiello, G., Donvito, R., Singh, R. (2016). Social media marketing efforts of luxury brands: Influence on brand equity and consumer behavior.Journal of Business Research,69(12), 5833-5841. Goh, K. Y., Heng, C. S., Lin, Z. (2013). Social media brand community and consumer behavior: Quantifying the relative impact of user-and marketer-generated content.Information Systems Research,24(1), 88-107. Huang, R., Sarigll, E. (2014). How brand awareness relates to market outcome, brand equity, and the marketing mix. InFashion Branding and Consumer Behaviors(pp. 113-132). Springer New York. Huang, Z. J., Cai, L. A. (2015). Modeling consumer-based brand equity for multinational hotel brandsWhen hosts become guests.Tourism Management,46, 431-443. IDG Communications. (2017). Marketing professionals prove hot property in Australian jobs market. Retrieved from: https://www.cmo.com.au/article/579697/marketing-professionals-prove-hot-property-australian-jobs-market/ Keller, K. L. (2016). Reflections on customer-based brand equity: perspectives, progress, and priorities.AMS review,6(1-2), 1-16. Rehman, M. (2016). The Effect of Brand Equity of Mobile Phones on Customer Satisfaction: An Empirical Evidence from Pakistan. American Journal of Business and Society, 1(1), 1-7. Solomon, M. R. (2014).Consumer behavior: Buying, having, and being(Vol. 10). Engelwood Cliffs, NJ: Prentice Hall. Statista. (2016). Apple's revenue worldwide from 2004 to 2016* (in billion U.S. dollars). Retrieved from https://www.statista.com/statistics/265125/total-net-sales-of-apple-since-2004/ Yi Zang., (2017).The Impact of Brand Image on Consumer Behavior: A Literature ReviewFile.scirp.org. Retrieved 16 May 2017, from https://file.scirp.org/pdf/OJBM_2015011615441425.pdf Titcomb, J. (2015).Apple reports biggest annual profit in history with net income of $53.4bn.Telegraph.co.uk. Retrieved 18 May 2017, from https://www.telegraph.co.uk/technology/apple/11959016/Apple-reports-biggest-annual-profit-in-history.html
Friday, April 3, 2020
6 Things to Consider when Applying to Study in the U.S.
6 Things to Consider when Applying to Study in the U.S. 6 Things to Consider when Applying to Study in the U.S. The U.S. is the most popular destination for international students in the entire world. And why not? As well as a great higher education system, the U.S. is the home of freedom, equality and competitive eating (and weââ¬â¢re proud of all of them, for better or worse). God bless America! [Photo: Seattle Municipal Archives/wikimedia] But competition to study in the U.S. is high, so if youââ¬â¢re planning to apply, there are some things youââ¬â¢ll need to know about first. 1. Setting a Schedule Applying to study in the U.S. can be a lengthy process, so itââ¬â¢s vital to set aside time accordingly. It can help to create a timeline for each step in the application process, from initial research into courses right through to making travel arrangements for when you start your studies. 2. Admission Tests Most U.S. colleges use standardized admission tests, so youââ¬â¢ll need to check which tests are favored by the institution at which youââ¬â¢re planning to study. Common tests required for undergraduate students include the SAT, the TOEFL English proficiency test, and the American College Test (ACT). Make sure to prepare for the exam properly, too! 3. Soft Factors As well as test scores and academic qualifications, most American colleges look at ââ¬Å"soft factorsâ⬠when assessing an application. These include extracurricular activities, letters of recommendation, application essays and other relevant experience you might have. 4. The Common Application The Common Application (or Common App for short) is a standardized, online application used by more than 600 colleges. Using this can make the application process much simpler. 5. Finance Many U.S. colleges operate on a ââ¬Å"need-awareâ⬠basis for international students. This is unlike the ââ¬Å"need-blindâ⬠approach used for U.S. citizens (wherein a college will not consider ability to pay as part of an application and may offer financial aid to successful applicants). As an international student, youââ¬â¢ll need to check whether your college uses a ââ¬Å"need-awareâ⬠or ââ¬Å"need-blindâ⬠approach for applications. You may find the application process is quicker if youââ¬â¢re able to pay tuition fees yourself, without needing financial aid. Its funny how piles of cash can make things simpler. 6. Get In Touch! When picking a college, itââ¬â¢s a good idea to get in touch with their international student advisor to ask about the application process (every college is a little different). They should also be able to answer any questions you have about the institution at which they work.
Sunday, March 8, 2020
buy custom Approach to Care of Cancer essay
buy custom Approach to Care of Cancer essay Introduction Cancer refers to an uncontrollable or unregulated growth of abnormal body cells, also known as malignant cells, in the body. The term cancer often used to refer to a group of different diseases that result from such cell growth, and their classification is usually based on the initially affected cell. Common types of cancer include carcinomas, sarcomas, lymphomas, leukemia and adenomas (McCance, Huether Brashers, 2009). Causes of Cancer The major causes of cancer include carcinogens from radiations and tobacco, hereditary genes from family members, damages or mutations of DNA cells and other socio-physiological factors such as old age, health status, for instances, contraction of hepatitis B or C and HIV viruses. Physiological Effects of Cancer Usually, cancer becomes harmful to the body as the damaged cells continue to divide and regroup to form masses of tissues known as tumors, for instance, leukemia cancer that blocks the blood hence interfering with circulatory functions. Similarly, growth of tumors may affect the digestive and nervous systems. Sometimes cancer releases hormones that alter the normal functioning of the body. Diagnosis and Staging of Cancer For effective diagnosis and treatment of cancer, it should be detected at it early stages. This would help reduce chances of further growth, more complications and difficult encounters in treatment. During diagnosis, physicians often use information on signs and symptoms and other medical procedures to diagnose cancer. Ultrasound scans, X-rays, CT and MRI scans are common imaging techniques used in detecting, identifying and allocating the position of cancer in the body and the respective affected organ (Moscow Cowan, 2007). Sometimes, doctors perform endoscopy to search for abnormalities within the body. Diagnosis also involves extraction of cancer cells for microscopic examinaton, a process called biopsy. In addition, examination and analysis of blood sugar levels, body fats, proteins and DNA are carried out. Certain types of cancers, such as prostate cancer, can be easily detected through blood test due to its secretion of Prostate-Specific Antigen (PSA) into the bloodstream. Acc ording to Copstead and Banasik, molecular diagnosis, biopsies and imaging techniques are all required for effective diagnosis of cancer (Copstead Banasik, 2010). After diagnosis, the physician determines the extent to which the cancer has spread and establishes its development stage. This stage will dictate the type of treatment to be offered (Porth, 2010). The most common method of staging cancer is the use of TNM system. In this system, the extent and size of a primary tumor is indicated by T with numerical values between 1and 4. The degree to which cancer has spread is indicated by N with figures ranging from 0 to 3 whereas the extent of infection of body organs by cancer is represented by M which is assigned either 0 or 1. For example, a chronic lung cancer can be staged as (T4, N3, M1) (Fitzgibbon Loeser, 2010). Usually, cancers at initially stage will be assigned lower value indicate that they have less spread while chronic cancers will be assigned higher values during staging to indicate their severity. Treatment of Cancer Cancer treatment will depend on four main factors; type and stage, personal characteristics such as age and health status. Usually, cancer treatment combines any of the following forms; surgery, chemotherapy, radiation, immunotherapy, hormonal therapy and gene therapy (Yarbro, Wujcik Gobel, 2010). Side Effects of Cancer Treatments Different patients encounter different side effects after receiving cancer medications. The most common effects, however, include destruction of normal, healthy body tissues and cells by radiation beams and surgery. Patients sometimes suffer from skin irritation after radiation, excessive bleeding duuring operation, extreme pain, loss of appetite, tiredness and body weakness (Walter, 2004). Chemotherapy damages body proteins/DNA hence loss of hair, sore mouths, nausea, vomiting and fatigue. Some women have reported loss of fertility and alteration of the menstrual cycle pattern after chemotherapies. Replaced of cancer cells through gene therapy may not be successful and hence lead to permanent damage to body cells. Moreover, hormone therapy can lead to impotence in men, rapid weight gain, vomiting, and loss of fertility and interrupted monthly periods in female (Walter, 2004). Cancer treatments can also lead to emotional disturbances and psychological problems such as increased stress, grief of pain and loneliness. Complications of Cancer Complications of cancer vary depending on the stage of the tumor and health status of the individual. Some of the most common complications include psychological and emotional complications such as change in moods (mood disorders), for example, extreme depression and melancholy, grief and sorrow. Physical complications of cancer majorly concern pain which can be caused either by the damaged tissues and injury to other body organs. Physiological complication may include spread of the cancerous cells to other body parts and organs, a process called metastasis (Porth, 2010). Other complications of cancer are erectile dysfunction in men, vaginal dryness in women, swelling of lymph nodes and increased levels of calcium in the blood among others. Methods of Lessening Physical and Psychological Effects of Cancer Psychological effects can be reduced by psychotherapy, family support and closure, and administration of anti-depressant drugs. Physical effects, especially pain, can be dealt with through the use of anti-inflammatory drugs such as morphine (Walter, 2004). Patients should also undergo adjuvant therapies and post-treatment remedies for cancer to reduce its physical and psychological complications. Buy custom Approach to Care of Cancer essay
Thursday, February 20, 2020
Criminal Behavior and the Law Assignment Example | Topics and Well Written Essays - 1500 words - 1
Criminal Behavior and the Law - Assignment Example Crime is a disgraced act or violation of a public law. Today, the crime rate in almost every country has reached its heights and not a single individual can be fully safe from any specific criminal act. Implementation of crime prevention strategies plays a significant role in reducing the crime rate effectively. The role of criminologists, criminalists, and forensic psychologists is very important in dealing with crimes. In the United States of America, different types of crimes occur which are reported by the Uniform Crime Reporting. Some of the major types of crimes reported by UCR include forcible rapes, robbery, aggravated assault, burglary, larceny, and vehicle theft. In this paper, the focus will be on white-collar crimes, blue-collar crimes, index-one crimes, and index-two crimes measured by Uniform Crime Reports of the FBI. In the broad context, all criminologists, criminalists, and forensic psychologists work for the same purpose, which is, reduction or prevention of crimes. However, there are big differences in the working of these professionals. Studying all three fields related to the field of criminal justice, it can be said that the professionals of all three fields work together to deal with crimes. Criminologists deal more with the study of criminal behaviors and analysis of different crime prevention techniques as compared than actually participating in crime prevention. They provide proper solutions and assessments to government agencies, law enforcement agencies, correctional systems, and police officials. They also provide academic services in colleges and universities. According to Rothe and Friedrichs (2006), criminology deals with the identification of the causes of crimes and their prevention measures from sociology perspective. The field of criminalists, on the other hand, is related more closely to the field of forensic science. Criminalists
Wednesday, February 5, 2020
Recruitment Plan Assignment Example | Topics and Well Written Essays - 1000 words
Recruitment Plan - Assignment Example Date opened: Division: Department: Job Group: Contact Information: Hiring Manager: Others involved: (i) In reviewing resumes (ii) In the interview and selection Salary Gauge: Reason for Job Opening: Expansion of the company leading to opening of a production in the UK. Anticipated start date for this position: 2.2 Performance Profile Describing criteria with which to advertise, source, assess and interview. What will each candidate need to become successful These "must haves" are then converted into actions; measurable objectives. Look at the available resources, facilities and the group dynamics. Determine traits and abilities of the best people new on the job. Compare the best people already in the job and select traits that predict success. Outline additional "must haves". Includes related work experience. Industry/work setting: Educational post-graduate or certifications required. 2.3 Strategy for Diverse Recruitment Using the underutilization data focusing on the underutilized groups like Hispanics, Asian, American Indians, females or African Americans. Recruitment sources 2.3.1 In-house systems This has its own advantages and disadvantages (Buhler & D.B.A. 2002). Advantages include the fact that it costs less, it involves employees who are already familiar with the organization and its culture, it helps retain company secrets, improves employee morale and also it has a better success rate because employee track record is known. Its disadvantages include the fact that it creates a ripple effect as more job openings develop, it may lead to stagnation as no new thinking is injected into the organization and also creates negative internal competition. 2.3.2 Professional organizations and Associations 2.3.3 Target companies or...In the long run, this leads to serious frustrations. Use of a thorough recruitment process with the sophistication of the recruitment process being commensurate to the complexity of the job. As a minimum, the interview process should comprise atleast two interviews, an appropriate psychometric assessment and a thorough reference check. Use of a thorough interview, which should be highly structured and based on, proved methodologies. It's aimed at revealing levels of competency on the key areas, appropriate experience, the personality strengths, weaknesses and integrity. This has its own advantages and disadvantages (Buhler & D.B.A. 2002). Advantages include the fact that it costs less, it involves employees who are already familiar with the organization and its culture, it helps retain company secrets, improves employee morale and also it has a better success rate because employee track record is known. Its disadvantages include the fact that it creates a ripple effect as more job openings develop, it may lead to stagnation as no new thinking is injected into the organization and also creates negative internal competition. While advertising we will aim at creating interest in the post. As noted by Arue, Neil and Olga (2005), the more details given a job advert the more the more highly an organization is likely to be regarded and the more interest it will create.
Monday, January 27, 2020
Pressure Distribution around Circular Cylinder Lab Report
Pressure Distribution around Circular Cylinder Lab Report The aims of the investigation is to measure the pressure distribution on the surface of a smooth cylinder placed with its axis perpendicular to the flow and to compare it with the distribution predicted for frictionless flow, and to calculate the drag coefficient of the cylinder. In the investigation being carried out, a cylinder in a closed circuit wind tunnel will be experimented upon to gather the pressure distribution acting on it at different speeds. When the cylinder is standing vertically to the incoming flow in a wind-tunnel, two experiments will be carried out for the same cylinder, one with smooth (laminar) flow and the other with turbulent flow. The experimental pressure distribution obtained from each experiment will be compared with the theoretical distribution predicted for frictionless flow. The drag coefficient for the cylinder will be calculated together with the tunnel calibration constant for both tests. The smooth cylinder has got 12 pressure tappings at angular intervals of 30Ã ° on its surface; it is also placed with its axis vertical on a turntable on the floor. These tappings are connected to multi-tube (methylated spirits) manometer, which is inclined at an angle of 30Ã ° to the horizontal. The multi-tube manometer has got a total of 34 tubes, out of which the first 12 are directly connected to the pressure tappings on the cylinder, so that tube 1 is connected to pressure tapping 1 and so on. Pressure tapping 1 is facing the oncoming flow when the angular position indicator is set at 0Ã °. Since pressure tapping 1 is connected to tube 1 in the multi-tube manometer, the head pressure shown on tube 1 will represent the stagnation pressure. Tube 34 in the multi-tube manometer is connected to the upstream part of the wind-tunnel. The Betz manometer is used to change the incoming flow velocity at the upstream section. Since both the Betz manometer and tube 34 (in the multi-tube m anometer) are connected to the upstream section, both will show the same equivalent reading for pressure but in different units. Background theory: Laminar flow is defined when a fluid flows in parallel layers, with no disruption between the layers. In comparison to this Turbulent flow has a much more disorganized pattern, it is characterized by mixing of the fluid by eddies of varying size within the flow. The Reynolds number (Re), gives the measure for laminar and turbulent flows. Laminar flow takes place when Reynolds number is lower than 104, and for Turbulent flow the Re must be greater than 3ÃÆ'-105. Reynolds number has got no units since it is just a ratio. There are many diverse types of equations for deriving the Reynolds number of an actual shape. Fig. A shows the different types of flow patterns at various angles. The appropriate equation for the cylinders Reynolds number can be acquired from: Re = [eq. 1] Where: d = Diameter of cylinder VÃâ Ã
¾ = Velocity of fluid upstream v = Kinematic viscosity of air (1.46ÃÆ'-10-5 m2s-1) From the equation both values of d and v stay constant for both experiments, therefore the change in Reynolds number depends directly on the upstream velocity of the wind-tunnel. From the Bernoullis equation the relationship between fluid pressure and velocity can be established [eq.2] Where: P = pressure of the fluid Z = Height à ¯Ã à ²air = air density à ¯Ã à ² = The density of the fluid G = Gravity V= the velocity of the fluid The height in remains constant therefore the flow in the wind tunnel has an equation. [eq.3] By dividing both sides with à ¯Ã à ² and taking measurements from the point where the flow of velocity stops, (the stagnation point where V2 = 0). This is for the reason that at the stagnation point on the surface of the tube that is perpendicular to the flow to it, therefore the dynamic pressure is given by: [eq. 4] The pressure is measured using the manometer, and then therefore the pressure at the tapping must be the same as the pressure head at à ¯Ã à ²gH. Then the stagnation head and static head measured on the multi-tube manometer Inclined at a specific angle are given by: [eq.5] [eq.6] So when using these two equations the pressure differences found using them become. [eq.7] The dynamic pressure upstream of the cylinder is gained from: [eq.8] In the equation above k = the tunnel calibration constant. The pressure change across the wind tunnel contraction is measured using two different instruments; the Betz manometer and the Multi-tube manometer (tube no. 34). In an ideal system where there are no losses in energy. In procedures with energy losses, the ratio value is below 1. The relation is known as the tunnel calibration constant (k). is the pressure variation across the contraction as displayed by the reading on the Betz micro-manometer. The tunnel calibration constant can be attained directly from: [eq.9] Differences between the pressure at angles from the front of the stagnation point and the free steam pressure Pà ¯Ã¢â¬Å¡Ã µ is gained from the following equation: [eq.10] hà ¯Ã â⬠is a reading on tube 1 when pressure tapping number 1 is at an angle from the front of the stagnation point. Therefore the pressure coefficient at an angle can be defined: [eq.11] To find the pressure coefficient based on frictionless flow by using: [eq.12] The equation above is applied when plotting a graph, of variation of cÃŽà ¦ vs. ÃŽà ¦, by replacing values of angles into the equation above and then finding out the subsequent values for pressure coefficient (cÃŽà ¦). The consequent graph drawn from the derived equation will only correspond to a theoretical relationship, where the flow is believed to be frictionless. In the illustration below, the pressure in the wake region is less than pressure upstream; this causes drag, mainly due to flow separation behind the body. The streamline pattern and the pressure distribution are not balanced and a wake of slow-moving air is produced behind the cylinder. Fig. B shows flow separation taking place behind the cylinder The drag force, due to the pressure forces on the cylinder can be derived from: [eq.13] As the term integrates to zero, the drag coefficient can be simplified to: [eq.14] Apparatus The cylinder being experimented on is placed in the wind tunnel. The part that will be under testing will be of size of 1.000m X 0.760m. The wind tunnel will have a contraction ratio of 5.6 To connect the pressure tappings from upstream and downstream of the tunnel contraction to a Betz micro-manometer (mmH2O). The velocity of air in the test section is to be fluctuated by adjusting the fan speeds on a controller. Thirdly a smooth circular cylinder with diameter 114.3 mm to be placed with its axis vertical, on a turntable on the ground of the test section area. It can be seen in the cylinder where halfway along there are pressure tappings at angular intervals of 30à ¯Ã¢â¬Å¡Ã ° on its surface, near to the tappings are marked numbers from 1 to 12, these are connected to the upper ends of 1 to 12 tubes on a manometer. This manometer is to be a multi-tube methylated spirits manometer. The pressure upstream of the cylinder is sensed by a taping on the tunnel wall and is connected to one of the tubes. In this experiment to be tube number 34. The remaining tubes 13 to 33 are open to the atmosphere. The level of turbulence has to be changed, so in this test section it is small however to be increased by the insertion of a grid. This grid as an array of circular rods upstream of the test section. Lastly as the cylinder is to be placed on the turntable that is to be rotated. The angular position of pressure tapping number 1 is indicated on a digital counter in degrees and in tenths of degree. Method: To be able to do this experiment the cylinder to be already oriented so that the pressure from tapping 1 is facing the oncoming flow and the angular position indicator will have to be set at 0à ¯Ã¢â¬Å¡Ã °. As we know that the pressure P1 tapping is the stagnation pressures and exceeds the pressure Infinity upstream of the cylinder by an amount. The experiment firstly to test laminar flow The laminar flow of the velocity of the wind tunnel will be increased gradually until the Betz manometer reads 15mH2O. For this velocity to remain constant adjustments are made. From the multi-tube manometer, to take readings of fluid heights to show a general idea of the pressure distribution. The fluid height to be noted from the tube which is connected to the tunnel wall upstream of the cylinder. To measure the fluid height in tube 1 is measured then the table is to be turned in intervals of 10 degrees, this is to be repeated for every 10 degrees until it has fully rotated around 360 degrees. The experiment is also to test in a turbulent flow To have a grid with an array of squares inserted in to the wind tunnel, where the air flow and the velocity increases until the Betz manometer reads 35mmH2O, as the air becomes turbulent. This whole procedure to be repeated. Fig. C shows the manometer tube readings at a zero angle for smooth flow. Fig. D shows the manometer tube readings at a zero angle for turbulent flow. The readings of the multi-tube manometer were taken before starting to rotate the cylinder (at zero angle). This preliminary data collected is presented visually to show the shape of the pressure distribution around the cylinder. Tube 33 is open to air; hence it shows the atmospheric pressure. And tube 34 as mentioned earlier, shows the head pressure of the upstream section of the wind-tunnel. Results Raw Results: The scale of the manometer used was in inch. Therefore, the results obtained have to be changed to metres. This is done as follows: 1 inch = 0.0254 metres The heights of the fluids have to be multiplied by 0.0254 to change to metres. Smooth flow: ÃŽà ± = 30à ° hÃâ Ã
¾ = 11 inch = 11 x 0.0254 = 0.2794m Turbulent flow: ÃŽà ± = 30à ° hÃâ Ã
¾ = 10.4 inch = 10.4 x 0.0254 = 0.26416m The pressure coefficient, cà â⬠¢, at an angle can be found by using eq 8. The calculations to find cà â⬠¢ will be the same for both laminar and turbulent flows. The only difference would be that the value of hÃâ Ã
¾ would be different in each case. The value for h1 is the value obtained when the cylinder is at 0à °. The calculations to find the pressure coefficient for the laminar flow at ÃŽà ¦ = 0à ° is shown below: = 1 Calculated Results The following data shows values, which will be used to determine the pressure coefficient, this will be calculated using eq. 11. Smooth flow Transonic Flow Frictionless flow The values for the pressure coefficients will be the same for both laminar and turbulent flows since cà â⬠¢ only depends on the angle ÃŽà ¦. The pressure coefficient for a frictionless flow is found using eq. 12. Theoretical graph: The graph represents in a theoretical manner in which the experimental values should be able to compare to, whereby the air flowing in the graph, shows constant change at regular angle intervals. Also all peaks and troughs on the graph show relevant pressure coefficients. The graphs illustrate the pressure coefficient variation with changes in angle. The above graph shows the variation of cÃŽà ¦ vs. ÃŽà ¦ in laminar flow. This is then compared to the cÃŽà ¦ vs. ÃŽà ¦ in turbulent flow. Calculations to find the drag coefficient, CD: The value for the drag coefficient depends on the value of cÃŽà ¦ cosÃŽà ¦, this relation can also be noticed in eq. 14. Laminar flow Discussion: Throughout this experiment several factors were found out these include: The pressure distribution in the system Drag of the cylinder Drag coefficient Reynolds number Errors in the experiment which may have caused anomalies Looking at the graphs it can be seen that the pressure distribution in the system as in both lamina and turbulent flow also in parts off the graph it shows steady correlation, between angles 900 and 3100 in laminar flow. Angles 1300 and 2300 in turbulent flow. The drag on the cylinder in turbulent and lamina conditions show through the results and graphs shown. As there is more drag when there is turbulent flow than lamina, however this easy to understand as, in lamina flow the eddies produced have a small wake so therefore it does not have a large pressure so do not increase drag. From the graphs it can be seen that the pressure coefficient in lamina flow at 90à ¯Ã¢â¬Å¡Ã ° is greater than the pressure coefficient at turbulent flow. However in the turbulent flow the motion reduce the pressure and so increases the drag. The drag coefficient can be found by looking at the results and graphs, which both show that it is less in turbulent flow as the separation point occurs after 90à ¯Ã¢â¬Å¡Ã ° resulting in less eddies so less wake and therefore a high pressure with a end of low drag coefficient. Whereas in lamina flow it is greater than in turbulent. This may be due to the fact that the separation point occurs before 90à ¯Ã¢â¬Å¡Ã °, this has a resulting effect of more eddies which induce wakes and low pressure, the end result of this is a high drag coefficient. Separation point is where the angle flows become steady. The separation point occurs when the velocity of the fluid is reducing, in which the pressure flows induce a positive pressure gradient. Then once the separation has passed the boundary layers bend over and flow in the opposite direction. The pressure remains constant after the separation point because eddies are transferred to another energy. The separation point at lamina flow is at 90à ¯Ã¢â¬Å¡Ã ° than for turbulent which is after 90à ¯Ã¢â¬Å¡Ã ° as the pressure gradient is greater in laminar flow, which means that the greater the pressure gradient the earlier the separation. The reason why Reynolds number is greater in turbulent flow than lamina , as the main reason for this is that less pressure and drag coffeicnet and more drag is acting on to the cylinder. Conclusion: In this experiment a cylinder was used to find laminar and turbulent flow around it, the main objective was to see if the drag and flow increased or decreased, this was achieved and so this was shown that they increased in turbulent conditions and decreased in laminar conditions. Also in a turbulent condition the separation will increase to 90 degrees and the Reynolds number also increases. Discussion Figure G H shows the head pressure distribution around the cylinder. As it can be seen from the laminar head pressure distribution (figure G), the pressure between tubes 3-11 (i.e. angle 90à ° up to 330à °) is approximately the same. This shows that the pressure is more or less the same around the cylinder (seen from top view), except from its front point facing the oncoming flow, where the pressure is equal to the stagnation pressure. In the case of turbulent flow (figure H), the head pressure distribution pattern is somewhat different. The head pressure values drop between tube no. 5 to 9, which is the rear part of the cylinder. This proofs that a low-pressure region exists at the rear of the cylinder in turbulent flow. This region of low-pressure is referring to the wake region. The pressure distribution is also clearly symmetrical about tubes 6 and 7, which proofs that the pressure distribution on one (horizontal) side of the cylinder is the similar to the one on the opposite side of the cylinder. The percentage error for the coefficient of drag (CD) value in experiment 1 was calculated to be around 2.5%. This is a relative small percentage error, which shows that the experimental errors involved in experiment 1 were not significant. However, the percentage error for the CD value in experiment 2 was a massive 56%, which clearly shows that the experimental errors involved in experiment 2 did play a significant role. The error due to parallax is one of those errors. The parallax error is human reading error, where the eye needs to be exactly in line with the reading to be measured. In both experiments, the multi-tube manometer was at an inconvenient position (on the floor). And furthermore the whole manometer system was slanting at an angle of 30à ° to the horizontal. Both of these factors made it difficult to get the eye level exactly in line with the reading to be measured from the multi-tube manometer. This might have caused inaccuracy in the readings. The trapezium rule was used to determine the area under the graph of cÃŽà ¦cosÃŽà ¦, which was used to calculate the coefficient of drag. Since the graph had regions of both negative and positive areas, the trapezium rule had to be applied separately for each section of the graph. The whole graph was divided into strips, each with a width of à â⠬/18 (10 degrees in radians). When the graph of cÃŽà ¦cosÃŽà ¦ goes from a positive region into a negative one, the experimental data in some cases does not reach exactly zero before the data switches signs. This results in some minor areas of the graph being neglected. This would not significantly affect the total area found from the trapezium rule, since the areas neglected are relatively small. But since some areas of the graph are ignored, the total area found would not be the exact area under the graph. This will result in an error in the final values of the coefficient drag. The tunnel calibration constant for laminar flow (k1) was found to be 1.0959. Clearly this value cannot be accurate because the ratio of the two pressures must be equal to 1 or below, since both are representing the pressure across the same points. The unexpected high value for k1 must have been a result of experimental error. Since most terms are constant in the equation used to find k, the only factors that could have contributed to the error must have been the values of hÃâ Ã
¾ h1, which were obtained from the multi-tube manometer. While taking the readings from the multi-tube manometer, the fluid (methylated spirit) in the tubes was fluctuating. Some of the fluctuations were as large as +/- 0.5 inch. For this reason, many of the readings obtained might have been greatly inaccurate, which eventually could have lead to a significant error in the final values for the coefficient of drag in both experiments, as well as the value of k for laminar flow. The tunnel calibration constant for turbulent flow (k2) was found to be 0.7632. This value clearly indicates that energy losses did take place since the value is well below 1. Energy losses may have occurred in 2 main forms; as heat and sound energy produced by friction and collisions of air molecules with especially the grid system at the upstream. Heat energy (and some sound energy) is also produced due to friction of the inner wall of the wind tunnel. The flowing air must do work to overcome this friction, and therefore some kinetic energy of the flowing air is lost as heat. To get turbulent flow, the flow rate was increased and a grid system was introduced. With the introduction of a grid system at the upstream in experiment 2, more collisions of air molecules took place, hence resulting in increased loudness of flow. This increase in loudness (due to the increase in collisions and friction) resulted in some kinetic energy of the flow being converted into heat and more noticeably sound energy, and therefore some of the initial kinetic energy of the flow was lost. Energy in form of heat is also lost due to formation of turbulent eddies. The formation of eddies takes place in turbulent flow. All these energy loss factors mentioned earlier might explain why the k-value for turbulent flow was less than the k-value of laminar flow. In figure I, three graphs were plotted for the variation of pressure coefficient with angle. Each of the graphs was representing data for a unique condition. In the case of the theoretical data graph (green coloured), which represents the condition of frictionless flow, shows that at zero angle the pressure is a maximum (stagnation pressure). Moreover at an angle of 180Ã ° (rear of cylinder), the pressure once again reaches a maximum value. This relationship clearly indicates that the pressure distribution pattern would have been exactly symmetrical around a vertical axis at the centre of the cylinder. However, in the case of both laminar and turbulent flow the lines if symmetry is not vertical but horizontal about the centre of the cylinder. By looking at the graphs, all graphs show a maximum pressure coefficient at an angle of zero (equivalent to 360Ã °), which shows that whatever flow condition is imposed a maximum pressure will still remain at the stagnation point, which is the point where the fluid is brought to a stop. For laminar flow, the pressure coefficient remains more or less constant after an angle of approximately 75Ã °. This point is referred as the angle of separation, where the flow starts to separate from the cylinders surface. This value of 75Ã ° is very close to the value of 82Ã ° given for angle of separation for laminar flow in figure E. In the case for turbulent flow, the pressure coefficient stays more or less constant after an angle of approximately 130Ã ° (i.e. angle of separation). Once again, even this value for angle of separation is very similar to the value of 120Ã ° given for turbulent flow in figure E. One of the main reasons why there is a difference in shape between the theoretical graph and the experimental graphs for pressure coefficient is due to the fact that the assumption of air being a frictionless flow is invalid, since air is a viscous fluid. Overall the characteristics of the pressure coefficient graphs can be said to be an accurate presentation of actual data, since the three pressure coefficient graphs (between angle 0 to 180Ã °) are highly identical in terms of both the shape and scale of the pressure coefficient graphs shown in figure E. Conclusion The value of tunnel calibration constant (k) for experiment 1 was found to be inaccurate (due to experimental errors) since the value is not expected to exceed 1. However, the value of k for experiment 1 shows that very negligible energy losses take place across the contraction of the wind tunnel under laminar flow. The value of k was significantly lower for experiment 2; this clearly shows that the energy losses that take place across the contraction of the wind tunnel are significant. The main reason for significant amount of energy losses is due to the introduction of a grid system at the upstream in experiment 2. The grid system dramatically increases the effects of friction to the oncoming flow. For this reason, some of the initial kinetic energy of the airflow is lost as heat and sound energy. The obtained graphs for variation of pressure coefficient with angle around the cylinder perimeter can be said to be fairly accurate, since both the shape and scale of them is extremely identical to the graphs representing the same data in figure D. For experiment 1 the coefficient of drag value had a percentage error of only 2.5%, which shows that the experimental errors did not have a significant impact on the final result. However, in the case of experiment 2, the percentage error for the coefficient of drag was a massive 56%, clearly the experimental error did significantly affect the final result in experiment 2. In future improvements, the percentage error of the CD value in experiment 2 could be further decreased by reducing experimental errors mentioned in the discussion section.
Sunday, January 19, 2020
The Networks Surviving With Survivor Essay -- Television Shows TV Essa
The Networks Surviving With Survivor Reality shows sent a much-needed lifeline to the television networks industry. These shows have found a new way to bring much needed viewers, and even more important they brought in much needed money. The money came rolling into CBS after premiering Survivor, which brought in a profit of around $30,000,000 to the network. Even though Survivor is the must costly reality show, costing close to one million dollars to produce and hour of programming. In comparison to other shows, which cost far more like CBSââ¬â¢s series ââ¬Å"CSI: Crime Scene Investigationâ⬠which cost over 1.6 million to produce per hour. With the amount of money coming in such large sums to networks have had to close monitor how much is being spent. Clearlyââ¬â¢ the reality shows have brought in much needed assets to the flattering television networks. The failing television networks have found a number of elements in reality shows which can save them money. These elements have combined to improve rating, while also improving the amount of money brought into the networks. The networks have had pressure from stockholders to improve the return on their investments, or possible begin to lose their money. So the networks have discovered ways to save money with realityââ¬â¢ shows one being they havenââ¬â¢t had to pay actors. All the main characters of this shows are contests and only one will be ~paidâ⬠at the end. In addition to not paying actors, they have also been able to cut back greatly on the number of writers used to write scripts. The reality shows have been in a way been ââ¬Å"pre-testedâ⬠in other nations. The U.S. networks know that the shows can be successful because of the success they have had in Europe. These facts have all come together ... ... stints on the television show. Fox capitalized on this viewer enthusiasm by showing the wedding. The Fox network is not the only group that has used the popular contestants after theyââ¬â¢ve been on the show. E! Entertainment Television has had various ex-Survivor cast members host some of their shows. Some have also appeared in commercials. The Rosie Oââ¬â¢Donnell Show even went to the extent of purchasing gifts for former members of the Survivor 2 cast (one former contestant, Colby, was given a Harley Davidson motorcycle!). The most outrageous occurrence seemed to take place when former Survivor 2 contestant Jerri, posed for Playboy Magazine. It is clear that in the world of reality television, personality and popularity are everything. Popularity on reality TV shows can translate into commercial viability and an unreal life beyond reality television.
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