Wednesday, July 31, 2019

Analysis on Blanche DuBois From “A Streetcar Named Desire”

In Tennesse Williams' play, â€Å"A Streetcar Named Desire† the readers are introduced to a character named Blanche DuBois. In the plot, Blanche is Stella's younger sister who has come to visit Stella and her husband Stanley in New Orleans. After their first meeting Stanley develops a strong dislike for Blanche and everything associated with her. Among the things Stanley dislikes about Blanche are her â€Å"spoiled-girl† manners and her indirect and quizzical way of conversing. Stanley also believes that Blanche has conned him and his wife out of the family mansion. In his opinion, she is a good-for-nothing â€Å"leech† that has attached itself to his household, and is just living off him. Blanche's lifelong habit of avoiding unpleasant realities leads to her breakdown as seen in her irrational response to death, her dependency, and her inability to defend herself from Stanley's attacks. Blanche†s situation with her husband is the key to her later behavior. She married rather early at the age of sixteen to whom a boy she believed was a perfect gentleman. He was sensitive, understanding, and civilized much like herself coming from an aristocratic background. She was truly in love with Allen whom she considered perfect in every way. Unfortunately for her he was a homosexual. As she caught him one evening in their house with an older man, she said nothing, permitting her disbelief to build up inside her. Sometime later that evening, while the two of them were dancing, she told him what she had seen and how he disgusted her. Immediately, he ran off the dance floor and shot himself, with the gunshot forever staying in Blanche†s mind. After that day, Blanche believed that she was really at fault for his suicide. She became promiscuous, seeking a substitute men (especially young boys), for her dead husband, thinking that she failed him sexually. Gradually her reputation as a whore built up and everyone in her home town knew about her. Even for military personnel at the near-by army base, Blanche's house became out-of-bounds. Promiscuity though wasn't the only problem she had. Many of the aged family members died and the funeral costs had to be covered by Blanche's modest salary. The deaths were long, disparaging and horrible on someone like Blanche. She was forced to mortgage the mansion, and soon the bank repossessed it. At school, where Blanche taught English, she was dismissed because of an incident she had with a seventeen-year-old student that reminded her of her late husband. Even the management of the hotel Blanche stayed in during her final days in Laurel, asked her to leave because of the all the different men that had been seeing there. All of this, cumulatively, weakened Blanche, turned her into an alcoholic, and lowered her mental stability bit-by-bit. Her husband's death affects her greatly and determines her behavior from then on. Having lost Allan, who meant so much to her, she is blinded by the light and from then on never lights anything stronger than a dim candle. This behavior is evident when she first comes to Stella's and puts a paper lantern over the light bulb. Towards the end, when the doctor comes for Blanche and she says she forgot something, Stanley hands her her paper lantern. Even Mitch notices that she cannot stand the pure light, and therefore refuses to go out with him during the daytime or to well lit places. Blanche herself says â€Å"I can't stand a naked light bulb any more than †¦ â€Å". A hate for bright light isn't the only affect on Blanche after Allan's death – she needs to fill her empty heart, and so she turns to a lifestyle of one-night-stands with strangers. She tries to comfort herself from not being able to satisfy Allan, and so Blanche makes an effort to satisfy strangers, thinking that they need her and that she can't fail them like she failed Allan. At the same time she turns to alcohol to avoid the brutality of death. The alcohol seems to ease her through the memories of the night of Allan's death. Overtime the memory comes back to her, the musical tune from the incident doesn't end in her mind until she has something alcoholic to drink. All of these irrational responses to death seem to signify how Blanche's mind is unstable, and yet she tries to still be the educated, well-mannered, and attractive person that Mitch first sees her as. She tries to not let the horridness come out on top of her image, wanting in an illusive and magical world instead. The life she desires though is not what she has and ends up with. Blanche is very dependent coming to Stella from Belle Reve with less than a dollar in change. Having been fired at school, she resorts to prostitution for finances, and even that does not suffice her. She has no choice but to come and live with her sister; Blanche is homeless, out of money, and cannot get a job due to her reputation in Laurel. Already in New Orleans, once she meets Stanley, Blanche is driven to get out of the house. She needs get away from Stanley for she feels that a Kowalski and a DuBois cannot coexist in the same household. Her only resort to get out, though, is Mitch. She then realizes how much she needs Mitch. When asked by Stella, Whether Blanche wants Mitch, Blanche answers â€Å"I want to rest†¦ breathe quietly again! Yes-I want Mitch†¦ if it happens†¦ I can leave here and not be anyone's problem†¦ â€Å". This demonstrates how dependent she is on Mitch, and consequently Blanche tries to get him to marry her. There is though Stanley who stands between her and Mitch. Stanley is a realist and cannot stand the elusive â€Å"dame Blanche†, eventually destroying her along with her illusions. Blanche cannot withstand his attacks. Before her, Stanley's household was exactly how he wanted it to be. When Blanche came around and drunk his liquor, bathed in his bathtub, and posed a threat to his marriage, he acted like a primitive animal that he was, going by the principle of â€Å"the survival of the fittest†. Blanche already weakened by her torturous past did not have much of a chance against him. From their first meeting when he realized she lied to him about drinking his liquor, he despised her. He attacked her fantasies about the rich boyfriend at a time when she was most emotionally unstable. He had fact over her word and forced her to convince herself that she did not part with Mitch in a friendly manner. Further, he went on asking her for the physical telegram to convince him that she did receive it. When Blanche was unable to provide it, he completely destroyed her fantasies, telling her how she was the worthless Queen of the Nile sitting, on her throne and swilling down his liquor. This wild rebuttal by Stanley she could not possibly take, just as she could not face a naked light bulb. Further when Stanley went on to rape her, he completely diminished her mental stability. It was not the actual rape that represents the causes for her following madness, but the fact that she was raped by a man who represented everything unacceptable to her. She couldn't handle being so closely exposed to something that she has averted and diluted all of her life – reality, realism, and rape by a man who knew her, destroyed her, and in the end made her something of his. She could not possibly effectively refute against him in front of Stella. Blanche's past and present actions & behavior, in the end, even in Stella's eyes depicted her as an insane person. All of Blanche's troubles with Stanley that in the end left her in a mental institution could have been avoided by her. Stanley and she would have gotten along better if she would have been frank with him during their first encounter. Blanche made a grave mistake by trying to act like a lady, or trying to be what she thought a lady ought to be. Stanley, being as primitive as he was, would have liked her better if she was honest with him about drinking his liquor. Blanche always felt she could give herself to strangers, and so she did try to flirt with Stanley at first. After all like she said to Stella â€Å"Honey, would I be here if the man weren't married? â€Å", Stanley did catch her eyes at first. But being brutally raped by him in the end destroyed her because he was not a starnger, he knew her, he made her face reality, and in a way he exposed her to the bright luminous light she could not stand all her life.

Analysis of “If” by Rudyard Kipling Essay

The fist stanza of the poem â€Å"If† talks about being true to yourself. There are always people who misjudge you or don’t like or respect you for one reason or the other. It tells you to rise above those obstacles and prove them wrong and yourself right. You should not let others provoke you into doing things which you know are wrong. The second stanza of the poem talks about overcoming obstacles that may come your way and follow your dreams. It tells us to persevere, keep going and never give up even when times get rough.   It is hard to jump back in after negative or hurtful things have happened in your life but the third stanza tells us not to give up. If we believe in ourselves, we can surely redo the positive things that made us happy sometime ago over again. The writer obviously knew how hard sometimes life can become. He therefore initiated a sense of hope in this stanza. The last stanza tells us that we are all equal no matter what. We shouldn’t and mustn’t put ourselves above or below anyone because we are just as good as anyone else. There is one thing you can relate to in a person if you really look deep down inside and try. It also teaches us to never waste time and make every second of the day that we have count. In a nutshell, this poem is like a piece of advice to us all to be positive and pay attention to the type of world we live in.

Tuesday, July 30, 2019

Obesity and Fast Food Essay

January 2009 Abstract. We investigate the health consequences of changes in the supply of fast food using the exact geographical location of fast food restaurants. Specifically, we ask how the supply of fast food affects the obesity rates of 3 million school children and the weight gain of over 1 million pregnant women. We find that among 9th grade children, a fast food restaurant within a tenth of a mile of a school is associated with at least a 5. 2 percent increase in obesity rates. There is no discernable effect at . 25 miles and at . 5 miles. Among pregnant women, models with mother fixed effects indicate that a fast food restaurant within a half mile of her residence results in a 2. 5 percent increase in the probability of gaining over 20 kilos. The effect is larger, but less precisely estimated at . 1 miles. In contrast, the presence of non-fast food restaurants is uncorrelated with obesity and weight gain. Moreover, proximity to future fast food restaurants is uncorrelated with current obesity and weight gain, conditional on current proximity to fast food. The implied effects of fast-food on caloric intake are at least one order of magnitude smaller for mothers, which suggests that they are less constrained by travel costs than school children. Our results imply that policies restricting access to fast food near schools could have significant effects on obesity among school children, but similar policies restricting the availability of fast food in residential areas are unlikely to have large effects on adults. The authors thank John Cawley and participants in seminars at the NBER Summer Institute, the 2009 AEA Meetings, the ASSA 2009 Meetings, the Federal Reserve Banks of New York and Chicago, The New School, the Tinbergen Institute, the Rady School at UCSD, and Williams College for helpful comments. We thank Cecilia Machado, Emilia Simeonova, Johannes Schmeider, and Joshua Goodman for excellent research assistance. We thank Glenn Copeland of the Michigan Dept. of Community Health, Katherine Hempstead and Matthew Weinberg of the New Jersey Department of Health and Senior Services, Craig Edelman of the Pennsylvania Dept. of Health, Rachelle Moore of the Texas Dept. of State Health Services, and Gary Sammet and Joseph Shiveley of the Florida Department of Health for their help in accessing the data. The authors are solely responsible for the use that has been made of the data and for the contents of this article. 1 1. Introduction The prevalence of obesity and obesity related diseases has increased rapidly in the U. S. since the mid 1970s. At the same time, the number of fast food restaurants more than doubled over the same time period, while the number of other restaurants grew at a much slower pace according to the Census of Retail Trade (Chou, Grossman, and Saffer, 2004). In the public debate over obesity it is often assumed that the widespread availability of fast food restaurants is an important determinant of the dramatic increases in obesity rates. Policy makers in several cities have responded by restricting the availability or content of fast food, or by requiring posting of the caloric content of the meals (Mcbride, 2008; Mair et al. 2005). But the evidence linking fast food and obesity is not strong. Much of it is based on correlational studies in small data sets. In this paper we seek to identify the causal effect of increases in the supply of fast food restaurants on obesity rates. Specifically, using a detailed dataset on the exact geographical location restaurant establishments, we ask how proximity to fast food affects the obesity rates of 3 million school children and the weight gain of over 1 million pregnant women. For school children, we observe obesity rates for 9th graders in California over several years, and we are therefore able to estimate cross-sectional as well fixed effects models that control for characteristics of schools and neighborhoods. For mothers, we employ the information on weight gain during pregnancy reported in the Vital Statistics data for Michigan, New Jersey, and Texas covering fifteen years. 1 We focus on women who have at least two children so that we can follow a given woman across two pregnancies and estimate models that include mother fixed effects. The design employed in this study allows for a more precise identification of the effect of fast-food on obesity compared to the previous literature (summarized in Section 2). First, we observe information on weight for millions of individuals compared to at most tens of thousand in the standard data sets with weight information such as the NHANES and the BRFSS. This substantially increases the power of our estimates. Second, we exploit very detailed geographical location information, including distances The Vital Statistics data reports only the weight gain and not the weight at the beginning (or end) of the pregnancy. One advantage of focusing on a longitudinal measure of weight gain instead of a measure of weight in levels is that only the recent exposure to fast-food should matter. 1 2 of only one tenth of a mile. By comparing groups of individuals who are at only slightly different distances to a restaurant, we can arguably diminish the impact of unobservable differences in characteristics between the two groups. Third, we have a more precise idea of the timing of exposure than many previous studies: The 9th graders are exposed to fast food near their new school from September until the time of a spring fitness test, while weight gain during pregnancy pertains to the 9 months of pregnancy. While it is clear that fast food is generally unhealthy, it is not obvious a priori that changes in the availability of fast food should be expected to have an impact on health. On the one hand, it is possible that proximity to a fast food restaurant simply leads local consumers to substitute away from unhealthy food prepared at home or consumed in existing restaurants, without significant changes in the overall amount of unhealthy food consumed. On the other hand, proximity to a fast food restaurant could lower the monetary and non-monetary costs of accessing unhealthy food. In addition, proximity to fast food may increase consumption of unhealthy food even in the absence of any decrease in cost if individuals have self-control problems. Ultimately, the effect of changes in the supply of fast food on obesity is an empirical question. We find that among 9th grade children, the presence of a fast-food restaurant within a tenth of a mile of a school is associated with an increase of about 1. 7 percentage points in the fraction of students in a class who are obese relative to the presence at. 25 miles. This effect amounts to a 5. 2 percent increase in the incidence of obesity. Since grade 9 is the first year of high school and the fitness tests take place in the Spring, the period of fast-food exposure is approximately 30 weeks, implying an increased caloric intake of 30 to 100 calories per school-day. The effect is larger in models that include school fixed effects. Consistent with highly non–linear transportation costs, we find no discernable effect at . 25 miles and at . 5 miles. The effect is largest for Hispanic students and female students. Among pregnant women, we find that a fast food restaurant within a half mile of a residence results in 0. 19 percentage points higher probability of gaining over 20kg. This amounts to a 2. 5 percent increase in the probability of gaining over 20 kilos. The effect is larger at . 1 miles, but in contrast to the results for 9th graders, it is still discernable at . 25 miles and at . 5 miles. The increase in weight implies an increased caloric intake of 1 to 4 3 calories per day in the pregnancy period. The effect varies across races and educational levels. It is largest for African American mothers and for mothers with a high school education or less. It is zero for mothers with a college degree or an associate’s degree. Overall, our findings suggest that increases in the supply of fast food restaurants have a significant effect on obesity, at least in some groups. However, it is in principle possible that our estimates reflect unmeasured shifts in the demand for fast food. Fast food chains are likely to open new restaurants where they expect demand to be strong, and higher demand for unhealthy food is almost certainly correlated with higher risk of obesity. The presence of unobserved determinants of obesity that may be correlated with increases in the number of fast food restaurants would lead us to overestimate the role of fast food restaurants. We can not entirely rule out this possibility. However, three pieces of evidence lend some credibility to our interpretation. First, we find that observable characteristics of the schools are not associated with changes in the availability of a fast food in the immediate vicinity of a school. Furthermore, we show that within the geographical area under consideration, fast food restaurants are uniformly distributed over space. Specifically, fast food restaurants are equally likely to be located within . 1, . 25, and . 5 miles of a school. We also find that after conditioning on mother fixed effects, the observable characteristics of mothers that predict high weight gain are negatively (not positively) related to the presence of a fast-food chain, suggesting that any bias in our estimates may be downward, not upward. While these findings do not necessarily imply that changes in the supply of fast food restaurants are orthogonal to unobserved determinants of obesity, they are at least consistent with our identifying assumption. Second, while we find that proximity to a fast food restaurant is associated with increases in obesity rates and weight gains, proximity to non fast food restaurants has no discernible effect on obesity rates or weight gains. This suggests that our estimates are not just capturing increases in the local demand for restaurant establishments. Third, we find that while current proximity to a fast food restaurant affects current obesity rates, proximity to future fast food restaurants, controlling for current proximity, has no effect on current obesity rates and weight gains. Taken together, the weight of the 4 evidence is consistent with a causal effect of fast food restaurants on obesity rates among 9th graders and on weight gains among pregnant women. The results on the impact of fast-food on obesity are consistent with a model in which access to fast-foods increases obesity by lowering food prices or by tempting consumers with self-control problems. 2 Differences in travel costs between students and mothers could explain the different effects of proximity. Ninth graders have higher travel costs in the sense that they are constrained to stay near the school during the school day, and hence are more affected by fast-food restaurants that are very close to the school. For this group, proximity to fast-food has a quite sizeable effect on obesity. In contrast, for pregnant women, proximity to fast-food has a quantitatively small (albeit statistically significant) impact on weight gain. Our results suggest that a ban on fast-foods in the immediate proximity of schools could have a sizeable effect on obesity rates among affected students. However, a similar attempt to reduce access to fast food in residential neighborhoods would be unlikely to have much effect on adult consumers. The remainder of the paper is organized as follows. In Section 2 we review the existing literature. In Section 3 we describe our data sources. In Section 4, we present our econometric models and our empirical findings. Section 5 concludes. 2. Background While the main motivation for focusing on school children and pregnant women is the availability of geographically detailed data on weight measures for a very large sample, they are important groups to study in their own right. Among school aged children 6-19 rates of overweight have soared from about 5% in the early 1970s to 16% in 1999-2002 (Hedley et al. 2004). These rates are of particular concern given that children who are overweight are more likely to be overweight as adults, and are increasingly suffering from diseases associated with obesity while still in childhood (Krebs and Jacobson, 2003). At the same time, the fraction of women gaining over 60 2 Consumers with self-control problems are not as tempted by fatty foods if they first have to incur the transportation cost of walking to a fast-food restaurant. Only when a fast-food is right near the school, the temptation of the fast-food looms large. For an overview of the role of self-control in economic applications, see DellaVigna (2009). A model of cues in consumption (Laibson, 2001) has similar implications: a fast-food that is in immediate proximity from the school is more likely to trigger a cue that leads to over-consumption. 5 pounds during pregnancy doubled between 1989 and 2000 (Lin, forthcoming). Excessive weight gain during pregnancy is often associated with higher rates of hypertension, C-section, and large-for-gestational age infants, as well as with a higher incidence of later maternal obesity (Gunderson and Abrams, 2000; Rooney and Schauberger, 2002; Thorsdottir et al. , 2002; Wanjiku and Raynor, 2004). 3 Moreover, Figure 1 shows that the incidence of low APGAR scores (APGAR scores less than 8), an indicator of poor fetal health, increases sharply with weight gain above about 20 kilograms. Critics of the fast food industry point to several features that may make fast food less healthy than other types of restaurant food (Spurlock, 2004; Schlosser, 2002). These include low monetary and time costs, large portions, and high calorie density of signature menu items. Indeed, energy densities for individual food items are often so high that it would be difficult for individuals consuming them not to exceed their average recommended dietary intakes (Prentice and Jebb, 2003). Some consumers may be particularly vulnerable. In two randomized experimental trials involving 26 obese and 28 lean adolescents, Ebbeling et al. (2004) compared caloric intakes on â€Å"unlimited fast food days† and â€Å"no fast food days†. They found that obese adolescents had higher caloric intakes on the fast food days, but not on the no fast food days. The largest fast food chains are also characterized by aggressive marketing to children. One experimental study of young children 3 to 5 offered them identical pairs of foods and beverages, the only difference being that some of the foods were in McDonald’s packaging. Children were significantly more likely to choose items perceived to be from McDonald’s (Robinson et al.2007). Chou, Grossman, and Rashad (forthcoming) use data from the National Longitudinal Surveys (NLS) 1979 and 1997 cohorts to examine the effect of exposure to fast food advertising on overweight among children and adolescents. In ordinary least squares (OLS) models, they find significant effects in most specifications. 4 3 According to the Centers for Disease Control, obesity and excessive weight gain are independently associated with poor pregnancy outcomes. Recommended weight gain is lower for obese women than in others. (http://www. cdc.gov/pednss/how_to/read_a_data_table/prevalence_tables/birth_outcome. htm) 4 They also estimate instrumental variables (IV) models using the price of advertising as an instrument. However, while they find a significant â€Å"first stage†, they do not report the IV estimates because tests 6 Still, a recent review of the considerable epidemiological literature about the relationship between fast food and obesity (Rosenheck, 2008) concluded that â€Å"Findings from observational studies as yet are unable to demonstrate a causal link between fast food consumption and weight gain or obesity†. Most epidemiological studies have longitudinal designs in which large groups of participants are tracked over a period of time and changes in their body mass index (BMI) are correlated with baseline measures of fast food consumption. These studies typically find a positive link between obesity and fast food consumption. However, existing observational studies cannot rule out potential confounders such as lack of physical activity, consumption of sugary beverages, and so on. food. 5 There is also a rapidly growing economics literature on obesity, reviewed in Philipson and Posner (2008). Economic studies place varying amounts of emphasis on increased caloric consumption as a primary determinant of obesity (a trend that is consistent with the increased availability of fast food). Using data from the NLSY, Lakdawalla and Philipson (2002) conclude that about 40% of the increase in obesity from 1976 to 1994 is attributable to lower food prices (and increased consumption) while the remainder is due to reduced physical activity in market and home production. Bleich et al. (2007) examine data from several developed countries and conclude that increased caloric intake is the main contributor to obesity. Cutler et al. (2003) examine food diaries as well as time use data from the last few decades and conclude that rising obesity is linked to increased caloric intake and not to reduced energy expenditure. 6 7 Moreover, all of these studies rely on self-reported consumption of fast suggest that advertising exposure is not endogenous. They also estimate, but do not report individual fixed effects models, because these models have much larger standard errors than the ones reported. 5 A typical question is of the form â€Å"How often do you eat food from a place like McDonald’s, Kentucky Fried Chicken, Pizza Hut, Burger King or some other fast food restaurant? † 6 They suggest that the increased caloric intake is from greater frequency of snacking, and not from increased portion sizes at restaurants or fattening meals at fast food restaurants. They further suggest that technological change has lowered the time cost of food preparation which in turn has lead to more frequent consumption of food. Finally, they speculate that people with self control problems are over-consuming in response to the fall in the time cost of food preparation. Cawley (1999) discusses a similar behavioral theory of obesity as a consequence of addiction. 7 Courtemanche and Carden examine the impact on obesity of Wal-Mart and warehouse club retailers such as Sam’s club, Costco and BJ’s wholesale club which compete on price. They link store location data to individual data from the Behavioral Risk Factor Surveillance System (BRFSS. ) They find that non-grocery selling Wal-Mart stores reduce weight while non-grocery selling stores and warehouse clubs either reduce weight or have no effect. Their explanation is that reduced prices for everyday purchases expand real 7 A series of recent papers explicitly focus on fast food restaurants as potential contributors to obesity. Chou et al. (2004) estimate models combining state-level price data with individual demographic and weight data from the Behavioral Risk Factor Surveillance surveys and find a positive association between obesity and the per capita number of restaurants (fast food and others) in the state. Rashad, Grossman, and Chou (2005) present similar findings using data from the National Health and Nutrition Examination Surveys. Anderson and Butcher (2005) investigate the effect of school food policies on the BMI of adolescent students using data from the NLSY97. They assume that variation in financial pressure on schools across counties provides exogenous variation in availability of junk food in the schools. They find that a 10 percentage point increase in the probability of access to junk food at school can lead to about 1 percent increase in students’ BMI. Anderson, Butcher and Schanzenbach (2007) examine the elasticity of children’s BMI with respect to mother’s BMI and find that it has increased over time, suggesting an increased role for environmental factors in child obesity. Anderson, Butcher, and Levine (2003) find that maternal employment is related to childhood obesity, and speculate that employed mothers might spend more on fast food. Cawley and Liu (2007) use time use data and find that employed women spend less time cooking and are more likely to purchase prepared foods. The paper that is closest to ours is a recent study by Anderson and Matsa (2009) that focuses on the link between eating out and obesity using the presence of Interstate highways in rural areas as an instrument for restaurant density. Interstate highways increase restaurant density for communities adjacent to highways, reducing the travel costs of eating out for people in these communities. They find no evidence of a causal link between restaurants and obesity. Using data from the USDA, they argue that the lack of an effect is due to the presence of selection bias in restaurant patrons –people who eat out also consume more calories when they eat at home–and the fact that large portions at restaurants are offset by lower caloric intake at other times of the day. Our paper differs from Anderson and Matsa (2009) in four important dimensions, and these four differences are likely to explain the difference in our findings. incomes, enabling households to substitute away from cheap unhealthy foods to more expensive but healthier alternatives. 8 (i) First, our data allow us to distinguish between fast food restaurants and other restaurants. We can therefore estimate separately the impact of fast-foods and of other restaurants on obesity. In contrast, Anderson and Matsa do not have data on fast food restaurants and therefore focus on the effect of any restaurant on obesity. This difference turns out to be crucial, because when we estimate the effect of any restaurant on obesity using our data we also find no discernible effect on obesity. (ii) Second, we have a very large sample that allows us to identify even small effects, such as mean increases of 50 grams in the weight gain of mothers during pregnancy. Our estimates of weight gain for mothers are within the confidence interval of Anderson and Matsa’s two stage least squares estimates. Put differently, based on their sample size, our statistically significant estimates would have been considered statistically insignificant. (iii) Third, our data give us the exact location of each restaurant, school and mother. The spatial richness of our data allows us to examine the effect of fast food restaurants on obesity at a very detailed geographical level. For example, we can distinguish the effect at . 1 miles from the effect at . 25 miles. As it turns out, this feature is quite important, because the effects that we find are geographically extremely localized. For example, we find that fast food restaurant have an effect on 9th graders only for distances of . 1 miles or less. By contrast, Anderson and Matsa use a city as the level of geographical analysis. It is not surprising that at this level of aggregation the estimated effect is zero. (iv) Fourth, Anderson and Matsa’s identification strategy differs from ours, since we do not use an instrument for fast-food availability and focus instead on changes in the availability of fast-foods at very close distances. The populations under consideration are also different, and may react differently to proximity to a fast food restaurant. Anderson and Matsa focus on predominantly white rural communities, while we focus on primarily urban 9th graders and urban mothers. We document that the effects vary considerable depending on race, with blacks and Hispanics having the largest effect. Indeed, when Dunn (2008) uses an instrumental variables approach similar to the one used Anderson and Matsa based on proximity to freeways, he finds no effect for rural areas and for 9 whites in suburban areas, but strong effect for blacks and Hispanics. As we show below, we also find stronger effects for minorities. Taken together, these four differences lead us to conclude that the evidence in Anderson and Matsa is consistent with our evidence. 8 In summary, there is strong evidence of correlations between fast food consumption and obesity. It has been more difficult to demonstrate a causal role for fast food. In this paper we tap new data in an attempt to test the causal connection between fast food and obesity. 3. Data Sources and Summary Statistics Data for this project comes from three sources. (a) School Data. Data on children comes from the California public schools for the years 1999 and 2001 to 2007. The observations for 9th graders, which we focus on in this paper, represent 3. 06 million student-year observations. In the spring, California 9th graders are given a fitness assessment, the FITNESSGRAM ®. Data is reported at the class level in the form of the percentage of students who are obese, and who have acceptable levels of abdominal strength, aerobic capacity, flexibility, trunk strength, and upper body strength. Obesity is measured using actual body fat measures, which are considerably more accurate than the usual BMI measure (Cawley and Burkhauser, 2006). Data is also reported for sub-groups within the school (e. g. by race and gender) provided the cells have at least 10 students. Since grade 9 is the first year of high school and the fitness tests take place in the Spring, this impact corresponds to approximately 30 weeks of fast-food exposure. 9 This administrative data set is merged to information about schools (including the percent black, white, Hispanic, and Asian, percent immigrant, pupil/teacher ratios, fraction eligible for free lunch etc. ) from the National Center for Education Statistic’s Common Core of Data, as well as to the Start test scores for the 9th grade. The location of the school was also geocoded using ArcView. Finally, we merged in information. 8 9 See also Brennan and carpenter (2009). In very few cases, a high school is in the same location as a middle school, in which case the estimates reflect a longer-term impact of fast-food. 10 about the nearest Census block group of the school from the 2000 Census including the median earnings, percent high-school degree, percent unemployed, and percent urban. (b) Mothers Data. Data on mothers come from Vital Statistics Natality data from Michigan, New Jersey, and Texas. These data are from birth certificates, and cover all births in these states from 1989 to 2003 (from 1990 in Michigan). For these three states, we were able to gain access to confidential data including mothers names, birth dates, and addresses, which enabled us both to construct a panel data set linking births to the same mother over time, and to geocode her location (again using ArcView). The Natality data are very rich, and include information about the mother’s age, education, race and ethnicity; whether she smoked during pregnancy; the child’s gender, birth order, and gestation; whether it was a multiple birth; and maternal weight gain. We restrict the sample to singleton births and to mothers with at least two births in the sample, for a total of over 3. 5 million births. (c) Restaurant Data. Restaurant data with geo-coding information come from the National Establishment Time Series Database (Dun and Bradstreet). These data are used by all major banks, lending institutions, insurance and finance companies as the primary system for creditworthiness assessment of firms. As such, it is arguably more precise and comprehensive than yellow pages and business directories. 10 We obtained a panel of virtually all firms in Standard Industrial Classification 58 from 1990 to 2006, with names and addresses. Using this data, we constructed several different measures of â€Å"fast food† and â€Å"other restaurants,† as discussed further in Appendix 1. In this paper, the benchmark definition of fast-food restaurants includes only the top-10 fast-food chains, namely, Mc Donalds, Subway, Burger King, Taco Bell, Pizza Hut, Little Caesars, KFC, Wendy’s, Dominos Pizza, and Jack In The Box. We also show estimates using a broader definition that includes both chain restaurants and independent burger and pizza restaurants. Finally, we also measure the supply of non-fast food restaurants. The definition of â€Å"other restaurants† changes with the definition of fast food. Appendix Table 1 lists the top 10 fast food chains as well as examples of restaurants that we did not classify as fast food. The yellow pages are not intended to be a comprehensive listing of businesses – they are a paid advertisement. Companies that do not pay are not listed. 10 11 Matching. Matching was performed using information on latitude and longitude of restaurant location. Specifically, we match the schools and mother’s residence to the closest restaurants using ArcView software. For the school data, we match the results on testing for the spring of year t with restaurant availability in year t-1. For the mother data, we match the data on weight gain during pregnancy with restaurant availability in the year that overlaps the most with the pregnancy. Summary Statistics. Using the data on restaurant, school, and mother’s locations, we constructed indicators for whether there are fast food or other restaurants within . 1, . 25, and . 5 miles of either the school or the mother’s residence. Table 1a shows summary characteristics of the schools data set by distance to a fast food restaurant. Here, as in most of the paper, we use the narrow definition of fast-food, including the top-10 fast-food chains. Relatively few schools are within . 1 miles of a fast food restaurant, and the characteristics of these schools are somewhat different than those of the average California school. Only 7% of schools have a fast food restaurant within . 1 miles, while 65% of all schools have a fast food restaurant within 1/2 of a mile. 11 Schools within . 1 miles of a fast food restaurant have more Hispanic students, a slightly higher fraction of students eligible for free lunch, and lower test scores. They are also located in poorer and more urban areas. The last row indicates that schools near a fast food restaurant have a higher incidence of obese students than the average California school. Table 1b shows a similar summary of the mother data. Again, mothers who live near fast food restaurants have different characteristics than the average mother. They are younger, less educated, more likely to be black or Hispanic, and less likely to be married. 4. Empirical Analysis We begin in Section 4. 1 by describing our econometric models and our identifying assumptions. In Section 4. 2 we show the correlation between restaurant location and student characteristics for the school sample, and the correlation between The average school in our sample had 4 fast foods within 1 mile and 24 other restaurants within the same radius. 11 12 restaurant location and mother characteristics for the mother sample. Our empirical estimates for students and mothers are in Section 4. 3 and 4. 4, respectively. 13 4. 1 Econometric Specifications Our empirical specification for schools is (1) Yst = ? F1st + ? F25st + ? F50st + ? ’ N1st + ? ’ N25st + ? ’ N50st + ? Xst + ? Zst + ds + est where Yst is the fraction of students in school s in a given grade who are obese in year t; F1st is an indicator equal to 1 if there is a fast food restaurant within . 1 mile from the school in year t; F25st is an indicator equal to 1 if there is a fast food restaurant within . 25 miles from the school in year t; F50st is an indicator equal to 1 if there is a fast food restaurant within . 5 mile from the school in year t; N1st, N25st and N50st are similar indicators for the presence of non-fast food restaurants within . 1, . 25 and . 5 miles from the school; ds is a fixed effect for the school. The vectors Xst and Zst include school and neighborhood time-varying characteristics that can potentially affect obesity rates. Specifically, Xst is a vector of school-grade specific characteristics including fraction blacks, fraction native Americans, fraction Hispanic, fraction immigrants, fraction female, fraction eligible for free lunch, whether the school is qualified for Title I funding, pupil/teacher ratio, and 9th grade tests scores, as well as school-district characteristics such as fraction immigrants, fraction of non-English speaking students (LEP/ELL), share of IEP students. Zst is a vector of characteristics of the Census block closest to the school including median income, median earnings, average household size, median rent, median housing value, percent white, percent black, percent Asian, percent.

Monday, July 29, 2019

Ethnography Essay Example | Topics and Well Written Essays - 2750 words

Ethnography - Essay Example Therefore, the degree to which there is a possibility of a researcher becoming a full participant within an experience is dependent partially on the features of the setting under observation. However, a number of ethnographers do not trust that understanding necessitates that they have to be full members of the group under study. In fact, the majority of them have the perception that this must not happen in instances where there is a need of producing a valid, as well as the useful report (Brewer 2000, p.119). These researchers suppose that the ethnographer must attempt being both outsider and insider, thereby remaining on the group's margins socially, as well as intellectually since there is a need for the view of both an outsider while also as an insider. Therefore, there is an emphasis that, apart from seeking to understand, the ethnographer should make an attempt at seeing familiar surrounding as anthropologically strange, the same way someone from another society would see it, t hereby adopting the Martian perspective.The initial yet most significant distinction amongst observational strategies is about the degree to which the observer happens to be a participant in the program activities under study. This is not an easy choice between participation, as well as nonparticipation. The degree of participation happens to be a continuum that varies from complete concentration in the program as a full participant to total separation from the activities under observation thereby assuming a role of a spectator.... of influential policymakers who are at the top, while generating latest analytic insights through the engagement of interactive, team study of often subtle grounds of human difference, along with similarity. Such findings give ethnographers the capability of informing other people of their findings while attempting to derive, for instance, policy decisions or instructional improvements from such a study (Brewer 2000, p.110). Variations within Observational Methods Observational research happens not to be a single thing; rather, the decision of employing field methods when gathering informational data happens to be the initial step within a decision process, which entails a vast number of options, as well as possibilities. When making a choice of employing field methods, this includes a commitment of getting close to the subject under observation with its natural setting, being factual and descriptive when reporting what gets observed, while, at the same time, finding out the viewpoin ts of participants within the domain observed. Once the researcher makes these basic commitments, it is essential to make more decisions concerning which specific observational approaches are suitable for the research setting at hand (Brewer 2000, p.114). Variation within Observer Involvement The initial yet most significant distinction amongst observational strategies is about the degree to which the observer happens to be a participant within the program activities under study. This is not an easy choice between participation, as well as nonparticipation. The degree of participation happens to be a continuum that varies from complete concentration in the program as a full participant to total separation from the activities under observation thereby assuming a role of a spectator. As a

Sunday, July 28, 2019

Data Model and Data Flow Diagram Assignment Essay

Data Model and Data Flow Diagram Assignment - Essay Example As the customer starts selecting products, the customer is given a "shopping cart". At the end, the customer can check out the shopping cart. At this time, he will be asked for personal information as well as login information for future purposes. The personal information includes the email, gender and date of birth in addition to the usual personal information needed for online shopping. He is also asked for credit card information (PresRX accepts only Master, Visa and American Express). Since PresRX also sells prescription drugs, if the "shopping cart" for the customer contains a product that is available only by prescription, the customer must provide the physician's information as well. This information will include the physician's name, address, specialty, phone number, email, fax number and hospital/clinic affiliation (we care about only the clinic that our customer goes to). (If the physician's info is not provided, we will contact the customer and obtain the info.) The custom er can also select the shipping method: we provide overnight, standard air and standard ground. For some of the drugs that are time and temperature sensitive, the customer will not be able to select the shipping method: the shipping method will automatically be chosen. The products will always be shipped to the person who orders them. If the customer wishes to use his insurance to make the purchase, we obtain the insurance company information as well as the insurance number and we will validate it by contacting the insurance company. Once the credit card is validated, we request validation from the insurance company on the prescription, physician on the prescription and validation of the physician from the hospital/clinic (to prevent fraudulent prescriptions). This is done via an automated email sent to the clinic as well as the physician. If emails are not made available, one of the employees will fax the request. This request will contain the drug requested, the quantity ordered, date it was ordered and the customer's name, address and phone number. The insurance company is called. We do this every time the person shops. The physician's office is given access to a physician's portal where his office can approve the prescription drug order. On approval, the drug is packed and shipped to the customer. The physician's portal is available where physicians can log in to not only approve the prescription request but also to renew the prescription for their patients. We also need to obtain supplies regularly. The reordering is based on need, triggered by low stocks. The system will have to reorder from the supplier via automatic ordering. As the products are shipped to our customers, the system updates the product quantity and as soon as the quantity goes to a pre-set "low" (different for each product), the system will immediately send an order to the product's supplier. Since we handle brand items, each product will have only one supplier. For each product we receive, our employees will update the product quantities in our system. The employees doing this will be the warehouse managers and we need to know who entered which batch of received shipments. Since prescription drugs

Saturday, July 27, 2019

Frank Lloyd Wright Essay Example | Topics and Well Written Essays - 1000 words

Frank Lloyd Wright - Essay Example Wright was also a proficient educator who advocated for the respect of humanity and the natural environment. His works have remained unique for many years and in 1991 he was crowned the greatest American architect of all times. Wright spent over seventy years creating designs that changed the art and architectural arena of the 20th century. Till his death in 1959, Wright devoted all his energy in improving and developing his career and this made him gain recognition in the American architectural history. Wright is remembered for his great contribution to the development of ‘prairie school’ of architecture which he became the principal practitioner in 1900. Prairie school gained wide recognition for its radical approach to the construction of modern homes. This brought a total change in the America’s architectural field and the entire construction fraternity (Alofsin 49). Wright -designed apartments exhibited low roof over continuous widow bands that turned corner which were unique from the tradition convectional boxlike structures. His works for business and church are among the most remarkable structures in architectural history that have remained incomparable up to date. For instance, In 1994 Wright erected the Larkin Company administration block which was well ventilated, had metal desk, fireproof and well condition. Soon after its completion, he erected yet another unique structure at the Unitarian church of Oak Park which was later registered as a historic l andmark. LaFontaine and Wright (50) argues that during his seventy years in the architectural career, Wright created over one thousand designs which included recreation complexes, commercial buildings, religious houses and museums among others. In fact, Wright redefined our concept of space, providing all people with an opportunity to live in fresh environment integrated in the natural world.

Friday, July 26, 2019

Comparative assessment of options for the management of municipal Essay

Comparative assessment of options for the management of municipal solid waste - Essay Example The imperative problem in these countries is lack of resources. This problem produces several others problems which directly or indirectly effect environment of these countries. In addition to this Cambodia has to face natural calamities like flood, drought etc each year. These again contribute in enhancing environmental problems in this country. (Dos, 2005) Cambodia is a small country with many rivers. Major rivers of Cambodia either drain into Tonle Sap or into the Mekong River. The Cardamom Mountains & the Elephant range divide the region into three zones. In the eastern zone rivers flow into Tonle Sap. In the western zone rivers pour into Gulf of Thailand. While the rivers of southern zone flow towards south on the eastern side of the divide. Tonle Sap gets seasonal flow of water. In months of September & October due to monsoon rains ,the flow in Mekong river increases enormously .Thus water overflows and inundates the delta. Flowing north ward this water empties into Tonle Sap. As a result the lake overflows, there by increasing its size from about 2,590 sq km to about 24,605 sq km. These recurring floods are not only big blows to the economy of the Cambodia but also cause devastating effects on the environment of the effected places. After flood decaying plants and animal bodies carried with flood water are remains scattered throughout the places. Due to which the atmosphere of those places get polluted. Decaying substances get dissolved in ground water as well as in fresh water of water bodies. This cause post flood famines in this country. After flood when the water level of Tonle Sap retreats a new layer of sediment gets deposited. Due to annual flooding and poor drainage the surrounding area of the lake gets transformed into marsh lands. During dry seasons these marsh lands are unusable for agriculture .Comparatively lesser amount of silt is carried away from the lake by Tonle Sap River than deposited by Mekong River. Thus gradually silting the lake and decreasing its water level and causing scarcity of water in dry seasons. Cambodia suffers from occasional droughts. These droughts cause soil erosion and reduce soil fertility, which declines agricultural yield in favorable season. Cambodia being an agricultural country, to cope up with this problem increasing yield substantially was necessary. To fulfill this purpose use of fertilizers and pesticides are increasing day by day. Pesticides can be divided into three subgroups namely Insecticides, Fungicides & Herbicides. Insecticides comprise of Chlorine, Phosphorous, Carbonate chemicals such as DDT, Aldrin etc. Herbicides are generally used for controlling growth of weeds. These cause less harm to the environment than insecticides. Example of Herbicides are Atrazine , Propachlor etc. Herbicides do not leave long term effect on soil. Fungicides are mostly used in vegetable farms and orchards. The factors such as soil type , depth of water table , rain fall infiltration and persistence

S5Ws9&10DQs Assignment Example | Topics and Well Written Essays - 1000 words

S5Ws9 DQs - Assignment Example In his evaluation, he undertook a thorough study of various regions, cultures, religions and civilizations of the world and predicted the battle lines for future conflicts (Huntington, 1990). Huntington’s hypothesis is an appropriate model that elucidates the practice of international relations in the post September 11 world because on many counts the hypothesis has been proved right as the September eleven incident, and the conduct of foreign relations has been based on the conflict between two diverse cultural orientations. Fundamental Islam doctrine was responsible for the September eleven attack, on the one hand, and America was under attack owing to its strong western philosophy of capitalism, democracy and Christianity. Ever since the September eleven attacks, international relations have been determined by the fight between Christianity and Muslim fundamentalism; whereas America is seen as the key promoter of Christian religion, radical terrorist organizations with safe havens in Afghanistan are the advocates of Muslim fundamentalism (Seth, 2010). ... An evaluation of economy and politics in the Greater Middle East indicates that there is incompatibility between development and democratization in the sense that the growth in economy and other parameters is not consistent with democratic ideals (Felbab-Brown, 2005). The reality in the Greater Middle East is contrary to major theoretical frameworks that state that democratization is directly proportional to economic development. The western thought provides that development and democratizations are related and that economic development ushers in democratization. Though the region is not much developed there are certain indicators of development that do not coincide with democratization. The Greater Middle East comprises countries like Afghanistan, Pakistan and part of North America. Democracy has been a huge challenge for these countries and countries like Pakistan and Afghanistan are quite unstable politically though they have tried to embrace democracy. Both Pakistan and Afghanist an are safe havens for terrorist organization that have not only waged war against the West but also resisted any attempts to democratize the countries. Pakistan has some level of economic development but is not compatible with democratization in the sense that the country still faces numerous challenges regarding political stability and the prevalence of egalitarianism. Afghanistan, on the other hand, has been occupied by America since the overthrow of the Taliban regime following September 11 (Gregory, 2011). The huge challenge for America was to democratize Afghanistan and make it politically stable to rid of militants from its region. Therefore, as far as the Greater Middle East is concerned, economic development is not compatible with

Thursday, July 25, 2019

The Evolution of Groups Article Example | Topics and Well Written Essays - 250 words

The Evolution of Groups - Article Example The next stage arrives when the members of the group start to discuss their purpose of being together. Different members of the group may have their own purpose on mind; so this phase works to filter out those whose purpose differ from the majority of people in the group. Then comes the stage of choosing a leader; as a group cannot be directed in any direction if there is no leader to take command of the group. This is followed by the phase in which the group members increase their level of cooperation due to increased trust. This cooperation helps to achieve the common goals of the group. The final phase arrives when the members of the group work in a synergistic way to form a team to back-up each other and result in total success (Jones & George, 1998). The writer has very skillfully simplified the complex concept of formation of groups. It appears that the author has been studying the phenomenon very closely and in detail, since his interpretation is very practical and after reading his contribution one clearly feels that this has been going on in their life too; during formation of

Wednesday, July 24, 2019

Employee Involvement Impacts in Hiring and Promotion Process of Public Assignment

Employee Involvement Impacts in Hiring and Promotion Process of Public Agencies - Assignment Example ns that affect their jobs.† Ideally, what this means is that through employee involvement, it should be possible for each member of the working hierarchy to have his or her contributions being welcomed in the course of decision making. Employee involvement is actually a leadership strategy in its own right (quote) and therefore could be said to be coherent with my area of specialization, which is public management and leadership. One other dimension or theme from which the topic that has been set can be looked at is the theme of impact of involvement on hiring and promotion process in public sectors. Indeed, employee involvement affects hiring and promotion process in a lot of ways. For example, it has been noted that it is only when the management and leadership actually opens up to all members on the staff hierarchy that the best qualities that are needed to be occupied at various sectors and departments of the organization can be identified (quote). Essentially therefore, employee involvement ensure an effective and efficient hiring and promotion process because there is the guarantee that all members on the staff will bring together their inputs and ideas in the course of decision and during the actual implementation of hiring and promotion and so much can be achieved within a limited time frame and with limited resources. One other impact that employee involvement has also been found to bring on the hir ing and promotion process is that it ensures and guarantees a very peaceful well accepted process. In effect, all forms of organizational and employee conflicts and post hiring and promotion disputes are minimized (quote). In the light of the discussions above, it can be seen that the research would have a lot of influential contributions on the field of study, which is the field of public policy andadministration†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. Support your Application Assignment with specific references to all resources used in its preparation. You are asked to provide a

Tuesday, July 23, 2019

Financial Management Essay Example | Topics and Well Written Essays - 1000 words - 2

Financial Management - Essay Example The discussion will further analyze two strategies of how multinational corporations attempt to maximize profits by utilizing increased demand. New York Stock Exchange (NYSE) NYSE is a tech stock company located in Wall Street in district of lower Manhattan New York. According to 2013 indices the stock market is by far the largest stock market in the world. The market is a result of Buttonwood Agreement of 1792. The exchange is renowned for its survival in the aftermath of World War I, 1929 economic depression and 1945 World War II. However, as this discussion will attempt to establish, the exchange is primarily responsible for cause of the great depression and other similar unethical economic acts. Some of these unethical economic acts are cancellation of companies from trading due to algorithm issues. Market technicians will create a complex algorithm status to make it harder for the common trader to trade. In particular, the Exelon case, a utility company was a direct depict of th is malpractices. The software is altered to ensure that some significant amount of loss is registered on every trade. National Association of Securities Dealers Automated Quotations (NASDAQ) NASDAQ seconds NYSE in terms of size and trade. The company was founded in 1971 and its operated by NASDAQ OMX group. NASDAQ was the first computerized electronic market, and as a result, traders enjoyed NASDAQ platform which was characterized with bid price and ask price of the stock market. In this case, the introduction of electronic system successfully over powered over-the-counter (OTC) system of trading, which was considered as ineffective. The company also introduced the online platform. Again, the introduction of Small Order Execution System (SOES) provided a market platform to beat the prevailing order of phone call automation. However, NASDAQ has with time attempted to manipulate the market demand to boost its profits. This discussion will present the Facebook initial IPO has vivid cas e presentation. Analyze how they attempted to make a profit after the crash and discuss any unethical practices. The economic mood of after recession is characterized with panic, fear resulting to low investments and trading rates. In this event, trading companies will attempt to present to the trader a poor market performance offering a â€Å"do not trade advice†. Many investors will attempt to withdraw their accounts, due to panic, in the process prices will instantly fall. Declined prices are as a result of manipulation will spiral back negatively to the market leading to a further declined prices. The general question rotates on the ability of markets and thoughts of ordinary people. After economic crash, companies resiliently try to bounce to the market with thoughts of capital reformation process (Ingerbrestsen, 2002). For instance, the JPMorgan Chase Bank behavior is totally based on unethical criminal act. Again, after the crash, NYSE and NASDAQ often allow traders to pick given prices without negotiation. This give and take situation is based on market dictatorship of prices. In most cases, these prices are underpriced up to 15% less or even more. Thirdly, the application of de-regulation tendencies on a high frequency trading is an outright move to ensure that there are overwhelming amounts of capital are not used. This is a direct move to

Monday, July 22, 2019

Tool for Orientation for Four Generations Essay Example for Free

Tool for Orientation for Four Generations Essay In the current clinical setting, it is often common to find that evidence-based practice (EBP) is not being implemented. There are a number of causative factors that can be attributed to this observation. Some analysts have suggested that personal differences may be hindering implementation of EBP. It is therefore important to look into the validity of this factor with special emphasis given to age differences in the clinical setting. The question to be considered is whether or not there is an evidence-based tool available to meet the needs of all four generations of learners. The EBT tool needs to implement clinical references and other reviews as well as a case by case analysis over past and present generations to help form a small basis for future generational use of the EBT tool. In forming continually controlled studies one would be able to obtain current and ongoing evidentiary guideliens in which to more accurately determine the generational differences to determine if there is in fact any influences of with utilizing the use of EBT. Population of Interest In order to foster a productive and feasible atmosphere in clinical practice, it is imperative for members of the organization to appreciate and respect differences among the generations. This means that gender, racial and ethnic backgrounds need to be understood and accepted. The latter categories of diversity have been discussed at length in nursing practice and most people understand them well. On the other hand, the issue of intergenerational differences also can be problematic if nurses do not understand it properly. In order to place this matter in context, it is essential to review the historical background of these different generations. The population of interest includes four distinct generations (Cordinez, 2002). There are basically four generations that may be found within the clinical situation; these are Veterans (born between 1922 and 1945), Baby Boomers (born between 1945 – 1960), Generation X (born between 1960 – 1980), and lastly the Millennial Generation (Born after 1980). All these generations underwent different experiences that subsequently shaped their respective professional and personal values. The performance value of each of these generations differ. For example, it is well known that the Baby Boomers generation was much ado about peace and the different associated behaviors related to drug and alcohol use, thus inhibiting their generation compared to the more productive performance of the later generations. The first generation under consideration is the Veteran generation born during the Great Depression and the Second World War. This generation grew up under tough times but during their adulthood, the country’s economy began flourishing. Because of these matters, The Veteran Generation realized that hard work can be rewarded and that authority ought to be respected. Therefore, it can be said that the values most revered by this generation are authority, loyalty, and respect. The second generation of nurses in the field today is the Baby Boom generation. Members of this group were born during a time of economic prosperity that was still characterized by some traditional values. This generation grew up around two-parent households in which one parent was the breadwinner. However, there were still a number of issues confronting them. They began challenging status quo and did not respect authority. According to Baby Boomers, real heroes are those ones with the courage to change the system. This generation had a lot room for growth within the nursing profession owing to the fact that economic times were relatively good. This generation is not typically conversant with technology. Intervention EBP implementation in most health institutions is a recent development. Since the population of interest is multigenerational, it is imperative to find out whether their generational background could have led to learning differences within the EBT tool. In order to attribute the lack of implementation of EBP to this issue, it is essential to eliminate other causative factors. Problems causing the potential failure to learn may be unique to each generation. It is important to design a nursing orientation program that empowers all generations of learners to implement evidence-based practice. Comparison of interest After examination of the historical backgrounds of these groups, one can now understand the differences between the groups may be influenced by their past. Two of the four generations of nurses have different perspectives on authority, workplace structures, technology, and evidence based practice (Spitzer, 2001). This can be a problem because organizations have changed dramatically over the past few years. Most health institutions now respect team-based approaches requiring individuals from different organizational levels to work together. This challenges traditional organizational structures in which the older generation was highly respected. The current view is to utilize evidence-based practice. Further contradicting the education of the older generation, the advent of technology has flipped organizational relationships. Baby boomers who had grown up with a deep respect for authority now highly depend on younger nurses to explain to them the essentials of computer technology. This has created renewed tensions between the generations. Despite the dramatic change in organizational structures, nurse’s mental attitudes still remain relatively stagnant and this has hampered implementation of evidence-based practice. Some nurses have failed to recognize where behavior patterns originate from and thus misunderstand colleagues from other generations. For instance, Baby Boomers usually think of Generation Xers as being highly unreliable or disloyal. On the other hand, the latter generation regards Baby Boomers tendency to remain with one employer as a failure to cease new opportunities. There are different work relations approaches between the generations. Outcomes Evidence-based practice in most health institutions may not be properly implemented because a substantial number of clinics fail to prepare their nurses through practical training. This means that nurses may be aware of the concept through the literature but do not have the ability to implement it in practice. Implementing this as a required teaching throughout all the health profession will enable nurses to be able to have additional tools available so that they may have more information in which to perform their duties better. In other health institutions, nurses lack infrastructural support from hospital administrations accustomed to conventional methods. Such administrations fail to shift their clinical practice making it difficult for particular nurses to do the same. EBP is failing due to lack of proper orientation in these health institutions. Nurses lack a straight-forward way in which they can carry it out within a certain clinical setting. Consequently, the methods may end up failing. There is little literature to link EBP with diversity issues let alone generational differences (Hicks Hicks, 1999). Conclusion In order for health organizations to flourish, there is a need to acknowledge differences between various generations of nurses. However, when it comes to evidence-based practice, other issues take greater precedence over generation differences. Instead, clinics need to look for ways in which they can boost administrative support, offer proper orientation and training to nurses. Personally, as nurse liaison for new employees, I am empowered to make changes by collecting and making available comprehensive, ongoing, and readily accessible EBP information needed to provide optimal care. At the very least, I can assist in providing staff with an orientation tool which incorporates the EBP process to insure and promote positive outcomes. References Cordinez, J. (2002). Recruitment, retention and management of generation X. Health Care Management Journal, 47, 4, 237-249. Hicks, R. Hicks, K. (1999). Boomers, Xers and other strangers Location: New York: Harper Collins. Raines, C. (2003). Connecting generations. CA: Crisp Publishers. Spitzer, R. (2001). A new world and new generation to come: Seminars for Nurse Managers, 9. 1367. The problem of interest in PICO question format. (5 points) 4/5 Presented a question, but did not identify PICO components. I DON’T KNOW WHAT THESE COMPONENTS ARE AND ALSO DID NOT ADDRESS THE OTHER TWO GENERATIONS COMMENTED ON BY YOUR INSTRUCTOR AS I DID NOT KNOW WHERE YOU WANTED TO GO WITH THAT. 1. A brief description of the patient population/disease, intervention, comparison, and outcome. (10 points) 9/10 Presented thorough description of two generations. What about the remaining two generations? If they are being excluded, tell the reader the rationale for this decision. Also, the outcome you intend to achieve is increased use of EBP. That was not clearly articulated in the outcomes section.

Sunday, July 21, 2019

The Ecological Impact Of Coal Mining Environmental Sciences Essay

The Ecological Impact Of Coal Mining Environmental Sciences Essay The goal of coal mining is to economically remove coal from the ground. Coal is valued for its energy content, and since the 1880s is widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. Coal is the most important fossil fuel around the world and vital for its energy security. In the process of development, coal mining is one of the major industries, which is contributing accidentally towards the pollution of the environment. The power sector is the bigger consumer followed by industrial sector (steel and cement manufacturing units). It also assures the energy supply which is important for any countries development. Coal is still remains essential in producing a diverse and balanced energy mix. It is a major fuel generating electricity worldwide. Coal is poised with different toxics which effect the environment and one of the key challenges coal industries is facing today. Coal is less effective and energy efficient compared to other fossil fuels and pollutes more as well. The main concerns is to focus at the regional level to do with the environmental impacts on air, water, land, forest, climate and the costs of mitigating these. Even with these concerns coal will remain a future mainstay. The coal mining industry finds it difficult to meet current needs as a bridge to meet future goal through the enhancement of knowledge and technology. The challenge is to apply the right technology in the most efficient and environmentally friendly way [1]. . Environmental Issues Most of the mining operations carried out underground and opencast mines like drilling, blasting, extraction transportation and crushing. These operations damage the environment and ecology to an unacceptable extent. Sometimes rapid and unchecked activities results in air, water and noise pollution, land degradation, health hazards, loss of forest wealth and agriculture land, drying of wells, rehabilitation problems lending to large scale environmental deterioration [2]. Environmental issues should observe and controlled by appropriate planning and study. A balance is required between mining and environment. In addition, due to excessive mining, chances of accidents increase which lead to misery and tragedy [2]. Impact of Mining on Air Quality Air pollution happened in mines due to the runaway emissions of particulate matter and gases including methane, sulphur dioxide, oxides of nitrogen and carbon monoxide. Mining operations produce a lot of dust. The drilling, loading, transporting, blasting, hauling, and crushing mainly produce dust in major operations. They dust sources in mines can be categorized as primary sources that generate the dust and secondary sources, which disperse the dust and carry it from place to place called as fugitive dust [2]. Opencast mining has severe impact on air pollution as compared to underground mining. In underground mining men suffer from dust inside underground mine workings. But opencast mining create much more air quality deterioration in respect of dust and gaseous pollutants. It creates air pollution problem not only within the mining premises but also in surrounding residential area affecting abundant air quality. High levels of suspended particulate matter increase respiratory diseases such as chronic bronchitis and asthma cases while gaseous emissions contribute towards global warming besides causing health hazards to the exposed population [2]. The dust which is uncontrollable creates serious health hazards and also affects the productivity creating poor visibility, increased maintenance cost, breakdown of equipment and ultimately deteriorates the ambient air quality in and around the mining site. The dust can also pollute nearby surface waters and stunt crop growth by shading and clogging the pores of the plants [2]. Besides polluting the environment, the generation of dust means the loss of fines, which act as road surface binders. The vehicular traffic on haul roads has been identified as the most important cause of fugitive dust emissions [2]. The increase in the earths surface temperature due to the presence of certain gases in the atmosphere called greenhouse effect [3]. These gases are building up by human activities by extracting various minerals from the earth. The combustion of coal produces CO2 like other fossil fuels, this gas affect the greenhouse effect which is linked to global warming. The coal combustion produces gaseous emissions of nitrous oxides (NOx) and sulphur dioxide (SO2) that produces ground level ozone and acid rain. SO2 and NOx gases react in the atmosphere with oxygen, water and other chemicals to form acidic compounds. Ground level ozone (O3) is mainly responsible for smog that forms a brown haze over cities. Ground level ozone is formed when NOx gases react with other chemicals in the atmosphere and is enhanced by strong sunlight [3]. Emissions of SO2 and NOx are termed trans-boundary air pollution because the environmental impacts from the production of these gases are not restricted by geographical boundaries [2]. Impact of Mining on Water regime Mining activities not only use a lot of water but it also affect the hydrological regime in the region and can affect the water quality. Disturbance to hydrologic regime The deep and large opencast mines have greater impact on the hydrologic regime in the region. With deforestation over the mine leasehold and changes brought about in the watershed characteristics, water flow in many streams in mining regions, is known to have dwindled and some perennial streams have turned into seasonal streams and others have receded [2]. The most important impact in large and deep opencast mine is on the ground water regime of the region. The water seeping into the mine and collected in the mine sump is partly used up in the mine and the excess amount is discharged into the surface drainage system [1]. The water used up in the mine for spraying on haul roads, conveyors, at loading and unloading points, bunkers etc. are lost by evaporation. A deep mine is likely to have longer haul roads requiring more spraying water. The water used for green belts and plantation areas are also lost by evapo-transpiration [2]. A part of the water discharged into the surface drainage system seeps into the ground and partially replenishes the loss of ground water caused by mine seepage but the proportion is generally very low. Many countries face the problem of over exploitation of ground water resources results in alarming lowering of water table [2]. The major focus is taken to estimating the water need and the mines for future to apply constraints on water use and discharge. The opportunity to re-use the water for drinking or agriculture purposes from surface and underground mines. Women in particular should be protected from potentially diminished water supplies. Mining companies should be a partner with the community in integrated water management. If mining diminishes the local water supply, then that water needs to be replaced [2]. To reduce the impact on the surface water bodies and surface drainage system, the surface layout for the underground and opencast should be planned and well managed. Underground and opencast mines should be planned with provisions for the development of underground and surface water bodies so that in the post mining period water in sufficient quantity is available for various uses [2]. In both the opencast and underground mines water is pumped out of the mines. This water should be planned for treatment so that the requirement for domestic and industrial uses can be met. Acid Mine Drainage Acidic water damages the water severely and produces water pollution problems. Acid Mine Drainage (AMD) refers to distinctive types of waste bodies that originate from the weathering and leaching of sulphide minerals present in coal and associated strata [2]. Environmental effects of AMD include contamination of drinking water and disrupted growth and reproduction of aquatic plants and animals. Effects of AMD related to water pollution include the killing of fish and loss of aquatic life and corrosion of mining equipments and structures such as barges, bridges and concrete materials [1]. AMD is the most persistent pollution problems in mines of North Eastern Coalfield. Generally, water quality characteristics of acidic mine water reflect high acidity and high hardness along with high iron and sulphate contents [2]. Various toxic trace/ heavy metals become soluble in acidic water and may be presenting significant to concentration levels depending upon their availability in the source material [1]. Fortunately the considerable majority of coal mining areas are safe and only in a few localized areas problem of AMD exists. AMD cripples the economy of mines due to compliance of stringent environmental standards and involves huge cost burden in its management [2]. Augmentation of pumped out mine water from coal/Lignite mines The mining industry has to discharge millions of litres of water every day to the adjacent watercourses and thereby may cause water pollution in and around the mining areas [2]. This water, otherwise a valuable water resource because of acceptable quality, becomes contaminated with various domestic and industrial trade effluents and subsequently is just wasted while putting on an extra cost burden on the underground mines [2]. Further costs are incurred on abstraction of water from adjoining surface water bodies containing this water and additional costs are required for the treatment to meet the water quality objective criteria [2]. It is emphasized here to augments and protects this precious ground water availability of nearly acceptable quality to meet various water demands particularly drinking water of already affected mining population [2]. Augmentation of pumped out mine water from coal/Lignite mines for various water supplies particularly for potable purpose should be the pri me goal of the concerned mining authority in the already drought prone thickly populated mining areas [2]. Heavy Metal Pollution The heavy metals are important component of pollutants which not only cause phytotoxicity but also enter into food chain causing hazardous impacts on human health and animals. Human biology is full of instances where heavy metals toxicity has led to mass death [2]. Heavy metal pollution is quite prevalent in acidic mine water situations. Mining and Milling operations, together with grinding, concentrating ores and disposal of tailings, provide obvious sources of contamination in the surface environment, along with mine and mill waste water. As a result, elevated levels of heavy metals can be found in and around metalliferous mines due to discharge and dispersion of mine wastes into nearby agricultural soils, food crops and stream systems [2]. Eventually, they may pose a potential health risk to residents in the vicinity of mining areas. The extent and degree of heavy metal contamination around the mines vary depending upon geochemical characteristics and mineralization of tailings. Water Pollution from seepage, waste dumps and mine benches Major water pollution problem occurs due to erosion of mine benches, overburden and reject dumps and failing dams [2]. The soil particles are carried away during the heavy rains due to deforestation and baring of ground. The blasted material in overburden and mine benches contain fine particles, which are also carried away by the rainwater [1]. Many chemicals also enter the water streams in dissolved state. These sediment-carrying effluents are responsible for siltation of agricultural fields and chocking of streams and rivers on the downstream. Surface and ground water pollution, is a common feature of mining and associated processing activities [2]. Runoff from dumps and exposed mine surface carries fine sediments in suspension, which is deposited on downstream valleys and agricultural fields. Impact of Coal Mine Fire Most of the coal mines are affected by fires which leads the steady destruction of energy resource. The reason for mine fires presumably involves the phenomenon of spontaneous heating through two interrelated processes viz., the oxygen coal interaction or oxidative process and the thermal process [2]. If the fire remains uncontrolled, it can spread further through the pathways and crack in the strata. Mine fires give hike to several environmental problems besides economic losses and safety hazards. Apart from direct losses due to burning of coal, the other associated hazards encountered are [2]: Gas poisoning Difficult geo-mining conditions Sterilization of coal Hindrance to production Explosions Damage structure and adjacent properties The adverse impacts of mine fires are observed on all the four basic components of the environment viz. Air, water, land and population. Mine fires pollute the atmosphere to a greater extent and have a bad impact on air. The effects are severe on air once the fire becomes surface fires. The pollutants released from mine fires mainly comprise of gases like carbon monoxide (CO), carbon dioxide (CO2), nitrogen oxides (NOx), sulphur dioxide (SO2), saturated and unsaturated hydrocarbons, hydrogen sulphides (H2S) and other photosensitive oxidants apart from particulate matter [2]. Un-burnt hydrocarbons in presence of NOx and other oxidants produce eye irritation. Impact of Mining on Land The type of mining operation used for extracting coal, mining constantly results in enormous land disturbance- e.g. large scale excavation, creation of derelict land, removal of top soil, dumping of solid wastes, cutting of roads, etc [1]. The mining industry is not eager to re-handle the overburden material for economic reasons but you can see in few cases they planned to re-handle the material to fill the empty space created at the end of mining, and probably this practice will become more common and spread in future. Opencast mining has bigger impact on land compared to underground mining. With new and improved technology, opencast coal mining is used commonly because it is cost effectiveness and productivity in large-scale land disturbance. Underground mining has considerably less impact than opencast mining on land [2]. The surface settling impose several damages to engineering structures such as bridges, highways, buildings and drainage besides interfering with ground water regime. Impact of Mining on ecology The mining results the significant area of land devalued and existing ecosystem are replaced by unwanted wastes. The extraction process of mineral drastically alters the biological and physical nature of the mining area. Commonly practiced strip-mining to recover coal reserves, causes extensive soil damage, destroys vegetation and destroy and alter microbial community. In the process of removing desired mineral material, the original vegetation is inevitably destroyed and soil is lost or buried by waste [2]. We are usually confronted with a complete absence of soil, in either a pedagogical or a biological sense, and what is left is just a skeleton full of limiting factors. Strip-mining can cause compaction, changes in soil texture, loss of soil structure and reduced water infiltration. In addition, steep-sided soil piles are prone to erosion [1]. The landscapes that emerge are devoid of supportive and nutritive capacity for biomass development. Several microbial processes such as nitrogen and carbon cycling, humidification and soil aggregation are practically non-functional posing scientific challenges in the restoration of rhizosphere productivity and fertility [2]. The devalued land does not posses suitable surface soil to provide bedding layer for anchorage of plant and to support the biomass. Also the plant growth is not supported due to presence of toxic materials gradual increase in such landscapes due to intensive mining activity endangers not only the agro forestry productivity but also the aquatic eco-systems [2]. Impact of Noise and Vibrations from Mining The mining activities produce enormous noise and vibration which establish a disturbance in the source. The blasting of hundred of tones of explosive is identified as prostrate noise in the mining area. In pit crushing system with mobile crusher and large capacity materials handling plants are being installed to facilitate speedy handling of large quantities [2]. All these activities are major sources of noise vibrations in and around the mining complexes. The major implication of noise is the potential hearing loss of human ear. The noise also produces other health effects, influence to work performance and makes communications more difficult. The wildlife in the forests and other areas surrounding are also affected by noise. The wildlife is more sensitive to noise and vibration as compared to human beings. Select all potentially noisy construction equipment and then consider the sound power level of the equipment and comply with the need to limit the noise in the mining area. If the operations have the potential to beak the specified noise limits or barrier then effective measures needs to be taken to ensure the sound power level is within the limits either by using different equipments which has less noise and while constructing the plant noise attenuation materials should be used to reduce the effective noise.

Challenges of the UAE in Demographic Imbalance

Challenges of the UAE in Demographic Imbalance Introduction Prosperity, one of a national interests of the UAE, requires development in all sectors of the UAE. People in the UAE cannot grant the desired prosperity by using local human resources; so development always requires foreign expertise. The number of expats has increased proportionally with the growth of the economy. Even with the growth of UAE national population, the ratio of citizens to non-citizens has severely decreased which caused the imbalance in population. The demographic imbalance has become one of most complex issue to for the UAE which created several challenges that should be addressed. The development   Economic development since the establishment of the UAEunion caused that the expats to reached to 88 % of the population in 2010. When we compared this figure with the situation in EU, where people can barley tolerate an average share of 6.5 % foreigners plus 9.4 % foreign-born new citizens. In the period from 2005 to 2010, the average growth rate for citizens was about 3% every year while non-national population has increased from 3.3 m to 7.2 m , which confirmed the statistics that says UAE is has the most rapid growth rate in population in the world in the period from 2005 since 1950s.These figures are enough to illustrate how the UAE is a unique case in population imbalance. Opportunity or threats Expat labor s are  is one of the main tool  tools for development that contributes to the accomplishment of construction, development programs, and the establishment of the basic infrastructure necessary for economic development. On the other hand, foreign labors led to numerous negative consequences, some of which being still persistsent. The presence of foreign labor in the UAE has turned from a development tool to a challenge that may be turn into a threat to national security from different aspects. The challenges can be categorize into four aspects: culture, economy, policies, and security. The impact of demographic imbalance on culture The presence of more than 200 nationalities who came from different religion, heritage and traditions merged ways of communications among people in the UAE[a1], which interact together daily in a limited area. This leads to the transnational spread of ideas, values and information among people with different cultures, this interaction includes ideologies and believes or even politics[a2]. In 2012, Arab nationalities consisted of 28% of population including citizens, while the Indian and Pakistani nationalities above 50% , which makes the Arabic language it the third in the country after Urdu and English languages. This is true if we assume that all Arabs speak Arabic. Unfortunately, lots of young Emiratis are more comfortable speaking English language instead of their Arabic, they even text each other in English when using communication technology. Furthermore, some elder citizens try to practice it too despite their weakness in speaking English. Moreover, names of residential complexes, streets and shop labels are dominated by foreign names, it witnessed Chinese sometimes. In media, such as radio, programs that presented in other languages are much more than Arabic even though most of them are produced and emitted in the UAE. When comparing the case of the UAE to other countries, countries use only their own languages domestically even if nobody else speaks his langu age such as Turkey and Korea, so what makes new generation of emaraties abandon their mother language is not only the need of to talk with the majority of the foreign peoplepopulation, but because of the weakness of culture that influenced by foreign cultures which consist not only for language, but for a combination of tradition, customs and values. Another challenges is the influence of presence of domestic servants. UAE has a high number of domestic workers helpers as domestic helps which came come from other cultures,: the statistics suggested that 96% of Emarati families employ them, those helpers have been converted to many things such as personal servant or nannies. Most of Emirati families rely on them to raise their children from very young age, they leave their kids in a companion of their domestic servants more than the biological family members. The low cost of domestic servant made people more dependent which perform 80% of parental tasks and responsibilities .This impacts the bonds between mothers and children, as the kids are more drawn toward their care taker and they tend to learn various other languages instead of mother tongue. Another recent issue came to UAE culture that UAE ladies are followed by their domestic servants publicly in shopping malls, hospitals, and parks, which reflects the ignorance of these l adies publicly[a3]. The low cost of domestic servant made people more dependent which perform 80% of parental tasks and responsibilities . The presence of high number of foreign people in UAE caused the creation of a lot of foreign academic institutions locally, the drawback that identifies this case is the threat by these schools which consists of minority of citizen students whom identity may depleted diluted among other identities. Normally, in other countries, foreigners tend to learn the national language for their interest and for the possibility of granting a nationality of hosted country, but in the UAE foreign people insists to preserve their own culture because they understand the difficulty to of getting UAE citizenship so they believe that they would go back to their country at some time to entertain their cultureeventually. Moreover, citizens are who have to[a4] The challenges of demographic imbalance on Economy Economy is the main driver for the influx of foreign people to the country. As people welfare is one of the main objective to maintain life prosperity, this welfare needs a strong economy which cannot be existsed without human resources at all levels and specialists. This demand of expats caused this imbalance. UAE’s economy is expanding according to the strategy of economic diversification. To maintain the economic growth rate, industries create lot of jobs in this market including high skill professionals and law skill worker, both of them usually does not fit citizens. Thus, citizen consists less than 5% in private sector while more than 95% are expats , this figure even exceeded the agreed ratio among labor ministries of GCC which should be less than 20% , which created another challenges that confront political decisions. Even the idea of emiratization in such sectors could not be pragmatic practicle due to the lack of skill that demanded by these industries. Therefore, the, the recruitment of foreigners to fill these opportunity vacancies instead. The role of foreign people is a vital to maintain the prosperity speciallyespecially for citizens’ welfare, that makes citizens relinquish some of their values to maintain their life prosperitystyle. Foreign people have the right to seek better life too, so by the time, old comers try to upgradeimprove their life style, so they would demand more newcomers to provide welfare for them too, which would add more imbalance to the population. It is a vicious circle. The majority of the expatriates working are single males from various Asian. Salaries of single staff who working in the country would be repatriated to his home country with very limited material benefit to the UAE. This would impact the UAE economy and would loses opportunities in local human resource investments too. This situation indicates that UAE are beingsuffers from massively financially drainage :; Iin 2014, remittances were more than 140 billion dirhams that transferred abroad, the continuation of this drainage is unhealthy phenomenon for the economy. Impact of demographic imbalance on policies The issue of foreign labor in the UAE became a political and global issues. In the context of International Labor Agreements and the implications for international economic systems, Some of these agreements request giving expat workers citizenships which is an evidence of political interface interference under the pressure of NGOs and international community. One of the consequences is the possibility of turning of foreign workers into lobbying powers. In fact, some Asian governments demanded UAE government to review employment agreements for alleged lack of appropriate safety measures in the workplace, this demands attracted more actors around the world such as embassies to put more pressure whether it is true or exaggeration. India has become capable to put pressure on political decision-makers, in favor of this large community. Furthermore, there are some concerns about the possibility of these communities demanding the right to autonomy in case of they become the majority of a sp ecific nationality. The foreign communities in the UAE have even have a second generation of immigrants who could become over time citizens with their own social status. They might turn into political movements that express their thoughts, aspirations and demands. Other political demands emerge more apparently in the US State Department annual report on human rights. In 2013 the department issued a report included workers rights in several sections. The laws of freedom of association and the right to collective bargaining such as allowing an employer to suspend an employee for striking and low wages. Prohibition of child labor and minimum age for employment and the acceptance condition of work. However, lot of regulation already been set and amended in the ministry of labor such as Wages Protection System (WPS) that set in 2010 and the prohibition of the use of children who used to be Asian or African in camel races. Therefore, this amendment shows the consequences toof the interference of the international organization in regards to foreign workers and shows the desire of the UAE government to develop better situation to people which turned these criticisms into opportunity. This challenges had opportunities too; several entities related to human rights has been founded including the Human rights department in the ministry of interior and Human rights association in Dubai. These organizations has enhanced the world perception about lot of issues such as children abuse and human trafficking. Furthermore, it developed the judicial system and rebuilt the reputation of the UAE that distorted by some NGOs. In October 2013, the UAE obtained a recognition in the area of human rights. The UAE was first among Arab countries and fourteenth globally on the International Human Rights Rank Indicator (IHRRI), published in 2013 by the Global Network for Rights and Development (GNRD). Impact of foreign worker on security The UAE witnessed lots of demonstrations that carried out by expat workers, Asians in particular, demanding to improveimprovement of working conditions. Labor protests resulted in disagreement with some issue in their own country such as the protest in 2007 set by 600 Chinese workers against their recruitment company in Chinea asking that the money they paid should be returned, they marched in Sharjah and blocked some road in the industrialy area. Such as demonstration might become a security threat if it deviateds from peaceful objectives and headed to the destruction of public properties as happened in Ras Alkhaimah in April 2015 when laborers wrecked and set fire to their building site and 17 cars after a worker fell to his death in an apparent suicide which prompted the police to use force to break up demonstration. Another demonstration took place in March 2015 when hundreds of workers from South Asia have staged a rare protest in Dubai ( BCC 2015), they blocked one of the main landmark area in Dubai. Different expats are is inseparable from conflicts between in their own different countries, which meansmean they may be interact influenced with byany future developments taking place abroad. During the Arab spring, a lot of Arab communities demonstrated their support or opposition to their political actions[a5]. An example of the demonstrations resulted in situations that happened abroad by Syria and Libya, as a result, In 2011, Syrians demonstrated in front of their consulate in Dubai, condemning action of Assad in their homeland. The consequentce of these demonstrations is are not always positive, sometimes it is converted to riot which need to be suppressed by forces. Some foreign labors involved in organized crime in various forms. UAE security services have succeeded over the years in discovering networks involved in trafficking, jewelry and liquor, perpetrated by expat labor, particularly Asians. More dangerously, some of these elements have proven to have links to some border crossing organized crime groups, such as money laundering, currency counterfeiting, drug trafficking, and other illegal activity. In addition, this increases the expenditure in security sectors to maintain the internal security. Other challenges of Demographic imbalance Lot of strategies in the UAE has been adopted or revised by foreign people who contributed to build the country, where the role of citizen was limited in managing and leading the development, this contribution gave the chance for foreign consultant organization to manage most of the economic and strategic plans, and it is notable that most of projects especially real estate projects extensively attracted more foreign companies with different identities. Institutions and organizations in the UAE have being been developdevelopingeding continuously. Government sectors which used to comprise of citizens is inflated yearly to absorb the requirements of other sectors that exponentially increase. There are a lot of organizations that have been under pressure to fulfill population demand. General directorate of residency and foreigners affairs is one of the departments that suffer from the imbalance, it is one of organizations that should inflate in accordance [a6]with population . population. Municipalities is another organization that suffered from this imbalance, the requirement of them increasing every year not for the interest of citizens, but for the high number of expats. The high population of foreign people put more pressure on water and energy sectors, and so on for all other services sectors. It is admitted that foreigners are who helped to develop the civilization infrastucture of the country but the surge in development did no t allow enough time to observe on cultural identity in the civilized environment, as cited by Dubai municipality . Another challenge resulted in this imbalance is in the structure of the security forces organization in the UAE which was were originally designed for the population of the UAE, but with the presence of high population such the double expats in 5 years from 2005-2010, this put lots of burden on security services which mainly comprise of minority of citizens, especially when the number of expats is fluctuating as a result of any global or domestic issue. Conclusion Expats in the UAE have greatly contributed to the economic growth including, infrastructure, transportation and domestic needs, as well as raising living standards of nationals, education, and health and social care. However, the rapid development has to trade off several aspects of culture, security and policies. An equilibrium is needed to meet the standard requirement of the UAE and the presence of people to prioritize requirement and to maintain a steady growth to the country to balance the cost-benefit of expats. Needs documentation Ahmed Almualla 1 [a1]Not clear what you mean [a2]More than other means like internet [a3]Why? [a4]Not complete sentence [a5]Need different word [a6]Choice of words