...The poem “Let America Be America Again” by Langton Hughes has different meanings. This poem begins to talk about how the pioneers first came to America in the search of what many people call “The American Dream”. It talks about how they came to America seeking for equality and liberty, but is it America really a place of liberty and equality? This is what Hughes makes us question our self about. The poem speaks of the American dream that never existed for the lower class American. It also talks about the freedom and equality that every immigrant hoped for but never achieved. In his poem, Hughes represents not only African Americans, but other minority groups as well. Besides criticizing the unfair life in America, the poem conveys a sense of hope that the American Dream is soon to come. Which I think is something that even now many people can relate to. This poem is written in 1935. Langston Hughes is writing a poem of someone who feels that America does not live up to what it should be. The tone is angry and resentful. In this poem it’s not representing the point of view of one particular group. It’s saying that there are many people who’ve come here with hopes and dreams and they’re being let down. He’s also saying that there is an economic difference between people. In essence the rich get richer, and the poor get poorer, because there is not equal opportunity. That idea is something that is not real for many people because of their race, economic situation, and come up...
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...A Weighted Tag Similarity Measure Based on a Collaborative Weight Model G.R.J.Srinivas Search and Information Extraction Lab, IIIT Hyderabad, ∗ Niket Tandon † Vasudeva Varma Search and Information Extraction Lab, IIIT Hyderabad, India Max Planck Institute, Germany ntandon@mpi-inf.mpg.de srinivasg@research.iiit.ac.in India vv@iiit.ac.in ABSTRACT The problem of measuring semantic relatedness between social tags remains largely open. Given the structure of social bookmarking systems, similarity measures need to be addressed from a social bookmarking systems perspective. We address the fundamental problem of weight model for tags over which every similarity measure is based. We propose a weight model for tagging systems that considers the user dimension unlike existing measures based on tag frequency. Visual analysis of tag clouds depicts that the proposed model provides intuitively better scores for weights than tag frequency. We also propose weighted similarity model that is conceptually different from the contemporary frequency based similarity measures. Based on the weighted similarity model, we present weighted variations of several existing measures like Dice and Cosine similarity measures. We evaluate the proposed similarity model using Spearman’s correlation coefficient, with WordNet as the gold standard. Our method achieves 20% improvement over the traditional similarity measures like dice and cosine similarity and also over the most recent tag similarity...
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...variables. Controlling for different relevant variables like demographics, age, education etc. we try to find a causal relation between the impact of prenatal care and birth weight. And in the end we conclude our results that a positive relationship is indeed present and significant, leaving room for data limitations and possible solutions for future research. IMPACT OF PRENATAL CARE ON BIRTH WEIGHT Shehryar Amin Waqas Sheikh Hafiz Moazam Ali Nasir Javed Econometrics 2 Introduction Birth weight is a key factor for a child’s health and wellness. Not only it is important to prevent infant mortality rate but also a healthier birth weight helps reduce the increased risks of illnesses faced by babies born with low birth weight. Also in a statistical brief for the state center for health statistics of North Carolina1, it was found that compared with children born with normal birth weight, low birth weight children were more at a risk for poorer health and also low educational outcomes through childhood and adolescence. They are more likely to have special health care needs and require additional educational services and extra medical care. So birth weight is an important measure for a child’s health. In this paper we would try to establish the relation between infant’s health (being represented by birth weight) and the impact of...
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...body weight and appearance. Thus, reinforcing people to emulate and believe what they see and hear. There is an extensive amount of studies on the effects of media exposure on body dissatisfaction and the experience of negative thoughts and esteem about one’s body, which is linked to a range of physical and mental health problems, including eating disorders and low self-esteem. Body Image: Self-Esteem and Identity Several individual variables predict or influence the relationship between media exposure and body disturbances. Most of the research has been done with women and girls, for whom the “body perfect” ideal is ultra-thin, and whose media models are typically underweight (Tantleff-Dunn, 1999). To determine whether viewing images of thin models influences how women feel about their bodies, there were many studies done using the social comparison framework, finding that women engage in “upward social comparisons,” comparing themselves to the thin models depicted in the media. When women believe that they do not measure up to the models, they feel more negatively about their own weight and body. For example, Lin and Kulik (2006) found that college women experienced decreased body satisfaction and confidence of attractiveness after viewing a single image of a thin woman. Another study by Lin and Kulik assessed the effects of media images on weight satisfaction. Female undergraduate students were exposed to thin models, average size models, and plus-size models, and...
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...Introduction In this study, we will discuss the impacts of different variables on the price of the car. There are 82 observations and 12 independent variables used. Variables that we are interested include: whether the car is hatchback, the wheelbase, length, width, height, weight of the car, cylinders number, engine displacements, MPG, whether the car is automatic transmission, and whether the car has 8 or 6 cylinders. First we will apply Bivariate Analysis to find out variables with significance, and then we will build a multiple linear regression model using these data. Overview of Data We get a summary from Stata about the observations. The 82 observations of car prices range from $8.395k to $68,603, and the 50% percentiles of price is $16,637. The mean price is $18154,77 and standard deviation is 8.462857. Bivariate Analysis In order to find out which variables are significant to car prices, we need to do Bivariate Analysis (Appendix 1). For continuous variables, we use correlation method. In this case, 6 continuous variables include wheelbase, length, width, height, weight, and MPG. Not surprisingly, we find out that weight and size of engine are the two variables that most positively correlated with price (correlation=0.6561 and 0.6397 respectively). However, wheelbase is least correlated with car price (correlation=0.1853), indicating that it is less significant. Height and MPG of car is negatively correlated with price (correlation=-0.2682 and -0.5272...
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...Volatility Forecasting Candidate number: Abstract This paper constructs a hedged portfolio with a long positon in S&P 500 index and a short position in FTSE 100 index. To calculate the time-varying hedge ratio, we use four methods, rolling window, EWMA, GARCH model and B-S model. Firstly, we explain the methods we used, including the assumptions, formulas and implications. Also, we implement the methods in the Excel to get the value of hedge ratios. Finally, we show the advantages and disadvantages of every method by comparing between every two methods. We evaluate the methods both in theory and practical application. Introduction: We want to hold a long position in S&P 500 index, at the same time we want to minimum-variance. As this reason, we introduce to hedge the long position in S&P 500 index with a short position in the FTSE 100 index. We suppose that the return on the hedged portfolio is: rp,t=rS&P-htrFTSE Then the variance of hedged profile will be: δF2=δS&P2+h2δFTSE2-2hδS&P,FTSE If we want to minimum the variance of the hedged portfolio, we must derivate of h in this function and let the equal to zero. Where ht is the time-varying hedge ratio, given by: ht=δS&P,FTSE,tδS&P2 Because we want to get the result only focus on the two-index, we ignore the currency flotation by assume that the currency rate is perfectly hedged. At very beginning, risk manager have assumed that the volatility is constant...
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...The relationship of excess body weight and health-related quality of life: evidence from a population study in Taiwan I-C Huang, C Frangakis, and AW Wu Abstract Objective: Excess body weight is related to significant morbidity and mortality. However, less is known about the relationship of body weight to health-related quality of life (HRQOL), especially for Asian populations. We examined the relationship of excess weight and HRQOL in a general population sample from Taiwan. Research methods and procedures: This cross-sectional study used a national representative sample (n=14221) from the 2001 Taiwan National Health Interview Survey. Body weight was categorized using body mass index (BMI in kg/m2) as normal (18.5–24.9), overweight (25–29.9), and obese (>=30). HRQOL was measured using the Taiwan version of the SF-36. We compared the body weight–HRQOL relationships by age, gender, and status of chronic condition, respectively. We especially used the Generalized Estimating Equations (GEE) to examine the relationships of BMI and HRQOL by taking into account the correlations of HRQOL within households. Four models were developed to adjust sequentially for sets of covariates: Model 1 with no adjustment; Model 2 adjusting for socio-demographic variables; Model 3 adding chronic conditions; Model 4 further adding smoking status. Results: Unadjusted physical HRQOL was best for normal weight, worse for overweight, and worst for obese individuals. For unadjusted mental HRQOL, overweight...
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...had been clinically proven to be effective at achieving weight-loss in moderately overweight individuals, had just received FDA approval as the first prescriptive drug of its kind. At the time of Metabical’s FDA approval, the only other prescription drug approved by the FDA for treating overweight individuals was Orlistat, which blocks the body’s absorption of fat; however, Orlistat has many undesirable side effects which may lead to serious medical conditions. Metabical, on the other hand, has a less dangerous, dual layer, controlled-release formulation which acts as an appetite suppressant and also contains a fat blocker as well as a calorie absorption agent. During its clinical trials, Metabical did not exhibit many of negative side effects that Orlistat has, leading to judgments that it is a superior treatment for achieving weight-loss and resulting in strong endorsements from the medical community. Weight-loss supplements can be classified as either prescriptive drugs or over-the-counter (OTC) remedies, and in general, OTC remedies are not as popular with consumers as prescription drugs for stimulating weight-loss in overweight individuals. This tendency to favor prescription drugs over OTC remedies is due in part to a lack of government regulation and possible safety concerns. Additionally, in recent years OTC remedies have become less popular with consumers than diet plans, exercise plans and meal replacement/weight management plans which are seen to be safer alternatives...
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...World’s Are You Beach Body Ready? This advertisement encourages women to lose weight by using precise visualizations and inferring specific body standards, further insinuating that women must maintain a certain body image to be beautiful....
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...mother was in shock about the untouched photographs of the model saying, “Look! She has stretch marks!” You could hear it in her voice how surprised she was as she showed her daughter. Girls who shop with their mothers become influenced by the images around them; a survey of girls’ ages 9 to 10, shockingly resulted in 40% of those young girls begin to lose weight. It is very damaging that the media has critical effects toward a women’s self-esteem, which may trail from adolescent age to middle age. Tall, thin, curvy and leggy with big breasts, flowing hair and toned bodies would be how you would describe a perfect ideal body, however that is not always the case. Over the past few centuries, Media has increasingly lead young girls into internal conflicts upon their image. From the latest TV shows, magazines and now the use of social media; Female celebrities exemplify this perfect ideal image. Adolescents visualize these female celebrities as their role models and begin comparing their own body image to theirs, forming discrepancy of unrealistic body shape. Bell states, Negative body image may be defined as the psychologically salient discrepancy between a person’s perceived body and their ideal body (479). This definition is the truth in what many girls experience when comparing their body shape to female role models. The photographs of models raise attention of unrealistic beauty being celebrated by the media, these models have airbrushed skin or effortless hair. However, we tend...
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...Health Care Models Analysis Directions: Develop a hypothetical case requiring the treatment of a patient (for example, the patient has a virus, an allergy, or a chronic condition). Using this case, explain the process in which each model (medical, holistic, epidemiological triangle, and social) would provide treatment (considering underlying causes, symptoms, as well as personal, social, economic, and environmental factors). If a model can be explained using a labeled graphic, then that is acceptable as well. Hypothetical Case (basic details only): A 23 year old female presents today with hypothyroidism. She is obese with a BMI of 50, has hypertension, and diabetes. She is concerned about how this affects her weight, hypertension and diabetes. There is a family history of hypertension and diabetes on both the maternal and paternal side. Her maternal grandmother died of a stroke at the age of 45. Medical Model: In diagnosing hypothyroidism, your doctor will take into account both your symptoms and the results of a thyroid stimulating hormone (TSH) test. Hypothyroidism is the result of diminished levels of thyroid hormones—known as T3 and T4. Today's TSH tests are very accurate and sensitive; they can help diagnose even the mildest cases of hypothyroidism. Your doctor may measure the level of free T4 (the portion of total T4 thyroid hormone that is available to your tissues) in your bloodstream. A third hypothyroid test is for anti-thyroid microsomal antibodies—anti-thyroid...
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...element Atomic Theory: Greek philosopher DEMOCRITUS * Atoms can’t be broken into smaller pieces * In any one element, all atoms are exactly alike * Atoms of different elements are different * Atoms of 2 or more elements can combine to form compounds * Atoms of each element have a unique mass * The masses of the elements in a compound are always in constant ratio Bohr Theory: Danish physicist NEILS BOHR * Electrons are arranged in definite shells or NRG levels, considerable distance from the nucleus * Electron configuration: how electrons are arranged * # of electrons = the atomic # of atoms Sir James Chadwick: 1932 * Discovered in the nucleus another particle, neutron * Neutron has same weight as the proton * Neutron has no electrical charge * Nucleus is made up of protons and neutrons * # of protons is = to # of electrons, which is the atomic # of atom Atoms & Molecules * Atoms combine & arrange to form different compounds & molecules * Molecule: 2 or more atoms that are joined together chemically to act as a single unit * Chemical Bond: is the force that holds atoms together * Compound: 2 or more different atoms joined together chemically * All compounds are molecules, but not all molecules are compounds Ex: Oxygen gas = O2 is a molecule, not a compound (both atoms are alike) Water= H20 is a molecule & a compound (2 diff elements joined 2gether) * Molecules can contain...
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...Did you know that in today’s society models weigh 23% less than the average women? Mass media use unrealistic models sending messages that in order to be considered attractive; you must be unhealthy, underweight and unnatural. Being surrounded with posters and magazines with unrealistic images isn’t going to help solve our society from this tragedy that is happening around us. I agree with models being a bad influence because the media is making the new generations feel so conscious and small about there appearance. Firstly, eating disorders are connected to social lives. As trained models, businesses and companies use models to promote their product or brand. This is the cause of 1.6 million people in the UK suffering from an eating disorder. The use of Photoshop gradually increasing is sending out fake images to the world which affects more and more people every day. By the media using average sized models it could make so many teenagers have a healthier and happier life. Furthermore, women are stereotypically known to be the weaker and more vulnerable sex which makes them easier to make money out of. By making women feel insecure, we are more likely to buy the...
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...Foundations of Finance: The Capital Asset Pricing Model (CAPM) Prof. Alex Shapiro Lecture Notes 9 The Capital Asset Pricing Model (CAPM) I. II. III. IV. V. VI. Readings and Suggested Practice Problems Introduction: from Assumptions to Implications The Market Portfolio Assumptions Underlying the CAPM Portfolio Choice in the CAPM World The Risk-Return Tradeoff for Individual Stocks VII. The CML and SML VIII. “Overpricing”/“Underpricing” and the SML IX. X. Uses of CAPM in Corporate Finance Additional Readings Equilibrium Process, Supply Equals Demand, Market Price of Risk, Cross-Section of Expected Returns, Risk Adjusted Expected Returns, Net Present Value and Cost of Equity Capital. Buzz Words: 1 Foundations of Finance: The Capital Asset Pricing Model (CAPM) I. Readings and Suggested Practice Problems BKM, Chapter 9, Sections 2-4. Suggested Problems, Chapter 9: 2, 4, 5, 13, 14, 15 Web: Visit www.morningstar.com, select a fund (e.g., Vanguard 500 Index VFINX), click on Risk Measures, and in the Modern Portfolio Theory Statistics section, view the beta. II. Introduction: from Assumptions to Implications A. Economic Equilibrium 1. Equilibrium analysis (unlike index models) Assume economic behavior of individuals. Then, draw conclusions about overall market prices, quantities, returns. 2. The CAPM is based on equilibrium analysis Problems: – – There are many “dubious” assumptions. The main implication of the CAPM concerns expected returns...
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...Find the Most Important Variables In Predictive Models A commonly used method in determining the most important variables is to examine how well each variable individually in predicting the target variable. However, this approach has its limits. The first limit is that it excludes variables that are actually good ones. For example, to find if credit score is a good indicator of account default, we calculate the default rate for each credit class as shown below (or we may perform some statistical tests such as a Chi-Square test for that matter). As we can see, the low credit score class have a default rate of 18% vs that of 6% for the high credit score class. Thus, credit class is considered as a good variable to build a default model. Credit score and account default. However, this approach has its limit because it does not take the relationship among variables into consideration. This can be illustrated using an imaginary example. We want to asses if height and weight of people are indicative of getting a disease. We can calculate the following tables for height and weight, respectively. Since short or tall people have the same percentage of sick people (2%), we may conclude that height is not relevant to predicting the disease. Similarly, we also think weight is not important. Height and Disease Weight and Disease If examining weight and height at the same time, we can develop the following matrix. There are four groups of people, high/heavy (normal), short/light...
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