Factors That Influence Poverty

Factors That Influence Poverty The literature examined throughout this paper assumes that there are many contributing factors that can lead to poverty in the United States of America. The factors include but are not limited to increased immigration rates, the lack of education, illicit drug use, and family composition (i.e. single parent homes). Additionally the literature presented demonstrates the relevance of the previously mentioned areas while highlighting specific examples. In conducting research on this particular issue many scholars shared contradicting views on what truly influences poverty in the U.S. This may be contributed to the many factors including the areas in which the research was conducted and varying backgrounds. Thus my research question is What critical components contribute to the rising poverty levels in America? In answering this scrupulous question I will focus on factors including immigration, level of education and family composition. Poverty is an issue that affects us all because res earch indicates that increased poverty levels are proportional to increased crime rates, number of students that drop out of school, and lack of job opportunities. Uncovering the critical components that contribute to the rising poverty levels in American will allow individuals to find solutions to this growing issue. Abstract Introduction Many individuals believe that poverty is only found in third world countries, but contrary to popular belief it exists in wealthy countries as well. Poverty occurs when individuals are unable to satisfy their basic needs, which leads to a depravation of food, shelter, money, and clothing. Scholars suggest that factors including increased immigration rates, illicit drug use, varying levels of education and family composition play a major role in the rising levels of poverty in America. Poverty is an issue that affects us all, research indicates that increased poverty levels are proportional to increased crime rates, number of students that drop out of school, and lack of job opportunities. Likewise increased levels of poverty also tend to have a negative effect on our communities. For example rising poverty levels forces property rates decrease. Furthermore, the issues surrounding poverty are a great concern to many individuals living in the land of prosperity, because there are a lar ge percentage of individuals that are living below the nations current poverty line. This is a very troubling fact, thus my research question is; what critical components contribute to the increase levels of poverty in America? In looking at potential causes of poverty, one can begin to formulate solutions that would ultimately help decrease the national poverty rate. Through examining various data, the previously mentioned research question would shed light on what factors truly contribute to poverty in the United States. To conduct my research I will visit certain cities that have high poverty rates. While in those cities I will stay in low income housing, also referred to as section eight, and intermingle with the residents. By staying in community with those that are affected by poverty I will be able to interact with many of them on a personal level through participant observation. Researching the many components of poverty is important, because we are products of our community , as a result we should know what negatively affects it so that we build on improvements. Literature Review People living in poverty tend to be in clustered neighborhoods rather than being evenly distributed across a geographic area.  [1]  Alemayehu Bishaw suggests that measuring this concentration of poverty is important, because researchers have found that living in areas with many other poor people places burdens on low-income families beyond what the families own individual circumstances would dictate. This article, using a combination of statistical data shows the distribution of individuals living in poverty based on level of education, race/ethnicity, living environment, and marital status. This report deeply analyzes demographic and socioeconomic characteristics of census tracts, to determine what truly influences poverty. The persistence of poverty and economic inequality around the world has led many economists to question the model of an individuals self-determination when it comes to living in poverty.  [2]  In Poverty Traps authors Samuel Bowels, Steven Durlauf, and Karla Hoff, propose that there are many conditions that may trap individuals, groups, and entire economies in poverty. In using history and theories Bowels, Durlauf, and Hoff suggest that those born into poverty have it in their power to get out of poverty. This book argues that there are many conditions that can influence poverty such; as an individuals level of education, and ones living and socioeconomic environment. The authors propose that poverty informs much political debate while making a correlation between social and political institutions, beginning with corruption and not limited to social customs such as kin systems. Throughout the 21st/ century, poverty advocates and activists continuously propose that political mobilization is an effective mechanism to combat poverty in many western democracies, specifically the United States.  [3]  The Politics of Poverty: Left Political Institutions, the Welfare State and Poverty, investigates the impact of left political institution on a nations amount of poverty. Brady argues that, given the longstanding contention that left political institutions reduce social inequality, it is plausible that left mobilization potentially could contribute to poverty reduction. Through various research methods, it is suggested that the strength of left political systems has a significant and powerfully negative impact on poverty. While welfare remains a crucial determinant of poverty, left political institutions are crucial to the explanations of poverty from a historical viewpoint A question often asked is Can the wealthiest nation in the world do nothing to combat the steadily rising numbers of Americans living in poverty, or the millions close to living in poverty?  [4]  Poverty in America, using various methods examines and explains why poverty is growing, while illustrating steps that can be taken to prevent it. John Edwards, Marion Crain, and Arne Kalleberg Edwards, Crain, and Kalleberg recognize that in order to eliminate an issue, one must first, figure out what is causing the issue. In doing this, the authors give an adequate definition of poverty and many of the factors that contribute to the rising poverty levels. Additionally, Poverty in America discusses the repercussions that rising poverty levels are having on various ethnic groups. In conducting research, the authors uncovered that there is a disproportionate number of African-Americans and Hispanic families living below the poverty line. They propose that this is due to wealth inequalities and the growing income gap between the rich and the poor. In the United States, with the exception of those on Social Security, the only way for most individuals to avoid poverty is to work.  [5]  Ron Haskins the author of Combating Poverty: Understanding New Challenges for Families, using empirical data and research methods provides various poverty trends over the course of history. By doing such, Haskins suggests that the conditions within the United States virtually ensure high poverty rates because of the factors that influence poverty. Those factors including the declining of work rates, stagnant wages, family composition, inferior education, and the increase number of immigrants. Haskins suggests that the conditions in the U.S. ensure high poverty rates because the factors that influence poverty remain very strong. Furthermore, Haskins deeply analyzes each individual cause and sheds light on them through data, charts and graphs. Over the course of history the United States has experienced a rising standard of living, with the Gross Domestic Product per capita on a constant rise.  [6]  Hilary Hoynes, Marianne Page, and Ann Stevens, using exploratory research methods examines the trends in individual poverty rates. Poverty in America: Trends and Explanations examines the rise and fall of various social economic groups that are in poverty. Likewise, this source takes into account many of the components that are used when measuring the various levels and causes of poverty such as levels of education, overpopulation and job opportunities. Throughout this text the authors present charts and graphs to show the change in data over a certain period of time. Hoynes, Page, and Stevens provide a fundamental contribution to understanding poverty as a whole. What does it mean to be poor? This is a questioned posed be John Iceland in Poverty in America: A Handbook. While most people would be hard-pressed to give a precise answer, many feel that poverty is easily recognized when one sees it.  [7]  For example, a news story accompanied with images of malnourished children in an areas surrounded by filth can vividly display poverty. Iceland suggests that as one moves away from the obvious examples, it becomes more difficult to distinguish what people mean when using the word poor. In using a concise, accessible format the author produces an inclusive picture of the state of poverty in America. Additionally, Poverty in America: A Handbook shows how poverty has changed significantly over time. Likewise, Iceland adequately shows how poverty is both measured and understood, and how public policies have wrestled with poverty as a political issue, and an economic reality. Furthermore, in looking at conventional theories, Iceland asks the tough questions like: Is poverty unavoidable, and Are people more likely to live in poverty based on their race, class, and/or gender? There are many competing theories about the causes of poverty in the United States with a great deal of empirical evidence to justify support for each.  [8]  The Cause of Poverty Cultural vs. Structural, suggests that there are many different factors that contribute to poverty, while arguing that poverty is largely the result of social and behavioral deficiencies in individuals that make them less economically viable within a conservative society. Gregory Jordan proposes that the debate is divided among theorist and policymakers on whether the causes of poverty are cultural and behavioral or structural and economic. This article briefly examines the theoretical arguments behind both, while providing an analysis to determine the empirical relevancy of each. Additionally, this debate is popular across political party lines with republicans supporting the cultural and behavioral side and democrats leaning more toward the structural and economic causes. To a majority of Americans, illicit drug use and poverty go hand in hand.  [9]  Robert Kaesnter suggests that poverty is concentrated in inner-city neighborhoods that are often times known for high rates of drug use. Similarly, the homeless population primarily found in cities consists of a proportion of drug users. Kaestner argues that the public has a significant amount of evidence that links drug use to poverty. Using empirical data researchers are able to propose that drug use, although not the only factor, can lead to poverty. Likewise based on societys willingness to pay for and support antidrug programs, it appears that there is a widespread belief that drug use causes many negative social and economic outcomes including poverty. Additionally this article includes tables that support its main argument. The proportion of U.S. residents born in another country has increased significantly in recent years.  [10]  Immigration and poverty in the United States, highlights that international immigration accounted for over a quarter of the net population growth from 2000-2007.Using various research techniques, Steven Raphael and Eugene Smolensky suggests that immigration can affect the United States poverty rate in two ways. The first way is that immigrants tend to live in highly concentrated areas, where the level of formal education is low. Secondly, it is proposed that immigrants tend to work for lower wages and do not earn an annual salary. By not working for a steady salary immigrants are more likely not to have a consistent paycheck, thus forcing many of them to live in poverty. The authors argue that the combination of increased poverty among immigrants and a higher ratio of immigrants to the total population add to the national poverty rate. Buried in the Census report are startling figures revealing that the collapse of marriage is creating a poverty crisis.  [11]  The Poverty Solution: Marriage or Bust, proposes that a long-term root cause of poverty in the United States of America is unwed childbearing. Through various research methods Robert Rector illustrates that single-mother families are five times more likely to live in poverty than married couples with children. Consequently, nearly 70 percent of poor families in America are headed by single parents. Additionally Rector highlights that the unwed birthrate has increased by 22 percent since 2002. Overall, this article suggests that because the rate of single mothers has risen, so has the number of individuals living in poverty. Over the past 25 years significant structural changes have occurred in the United States that have influenced poverty, making current-day poverty different in some ways from poverty just a few decades ago.  [12]  Causes of Poverty illustrates structural changes include transformations in our economic structure such as the shift from manufacturing employment to service sector employment. Amy Rynell suggests that structural changes include but are not limited to the changes in the economic structure, diseases, welfare reform, immigration, and the increase number of individuals being incarcerated. Rynell, through rigorous econometric and statistical methods presents data based on the various causes of poverty, while showing that certain components affect various populations in different ways. America is always projected as a world superpower and a developed nation. While the term poverty may conjure images of destitute people living in dreadful conditions, this term assumes a new dimension when we speak of poverty in the U.S.  [13]  Causes of Poverty in America suggests that although America is the land of dreams, it does not differ from the rest of the world. Often times people associate poverty with third world countries, Ashwini K. Sule argues that this is far from the truth. Sule proposes that just as there are different definitions of poverty, the causes of poverty are also different. Furthermore, this article suggests that poverty is caused by a plethora of factors including unemployment, lack of education, the breakdown of family systems and the lack of willpower. Contrary to popular belief, the effects of poverty could very well be the causes of poverty. The Census Bureau conducts a national census every ten years that includes the America Community Survey (ACS); this survey includes a section that deals strictly with poverty. How to Define Poverty? Let Us the Ways discloses that according to the U.S. Census Bureau there are millions of people are living in poverty.  [14]  Louis Uchitelle, using various research methods actively defines poverty. In defining poverty, it is suggested that there is no single definition that can accurately characterize all of the components that go into poverty. This is mainly because there are numerous types of poverty. Although there is no one definition that defines poverty, Uchitelle proposes, that poverty in its most general terms is the lack of freedom to have or to obtain the basic needs of life. This article suggests that instead of trying to form a single definition, it is important to examine poverty from a holistic viewpoint. Poverty is increasing tremendously across many groups, from the suburban families to the very poor families. More workers are becoming discouraged and are giving up on the job market.  [15]  CBS News suggests that this issue can be attributed to the fact that the United States is considered to have a weak economy and fraying government. Because of the weak economy, the unemployment rate has significantly increased. Using various data tables and charts, this article shows that the official poverty rate will increase to 15.7 percent. This percentage is the highest the poverty rate has been since 1965. Poverty is spreading at record levels because of the lack of employment opportunities due to the fragile structure of the economy. It is also suggested that changes in the economy including outsourcing, immigration, and globalization have pushed the median household income lower. Research Design Poverty is a major issue within the U.S. today. Economical, political, social, and cultural factors all contribute to poverty. The United States Census Bureau defines poverty as an economic condition in which people have an insufficient income and amount of resources to obtain basic needs such as housing, clothing, food, and health care.  [16]  Poverty is generally separated into two sections, those being absolute poverty and relative poverty. Absolute or extreme poverty is a circumstance in which individuals are unable to pay the prices of basic necessities needed to survive. Secondly, relative poverty suggests that people may be able to obtain basic needs but are unable to maintain the living conditions that are deemed normal. Relative poverty usually focuses on comparing ones income to those in the rest of the society. The most frequent measure of poverty in America is the poverty threshold which is set by the U.S. government. This measure identifies poverty as a lack of those goods and services frequently taken for granted by individuals living in a conventional society.  [17]  The official threshold is typically adjusted for inflation to better fit society. As suggested by the literature review presented in the previous section, there are many components to consider when discussing what influences poverty in America. The literature at hand proposes that immigration, varying education levels, and family composition play a major role in increasing poverty rates. This section will discuss how the previously mentioned components negatively affect poverty rates in the U.S. through key examples. To conduct my research I will begin by going to areas that I frequently visit, that are stricken by poverty in Atlanta, New York, and California. In these cities I will live in low income housing most commonly known as section eight and intermingle with the residents. By staying in community with those that are affected by poverty I will be able to interact with many of them on a personal level through a participant observation. A participant observation is when a researcher actively participates in the daily life of the people under study while obser ving things that happen, listening to what is said and questioning people, over some length of time.  [18]  My goal is that the individuals under study would hopefully feel that they could trust me and in turn be open to answering any questions that I might have in regards to their living situation. In doing this I will observe on a first hand bases some of the factors that influence poverty in these areas by taking various polls based on individuals varying education levels, and family composition. Additionally, the cities under observation have very high immigration rates as a result I will be able to examine the affects immigration has on the rising poverty levels in America. Immigration Most studies of poverty conducted within the United States have usually focused on how widespread economic trends and social welfare affects the number of individuals living in poverty. Very few scholars have conducted research on the influence immigration has on the growing poverty levels in America. In gathering my research I propose that immigration increases the poverty rates by suggesting that newly arrived immigrants are on average poorer than U.S. citizens. When conducting my research I will first explore the effect immigrants have on the nations tax base. Additionally, I plan to focus on the impact immigration has on the poor already in America. Due to rising unemployment rates, low incomes, and the change in taxes, those living in poverty pay very little in taxes. Similarly, although many immigrants work when they arrive to the states they tend to receive payment under the table, thus they escape paying taxes. Furthermore, when looking at the programs designed to assist the less fortunate, many of them depend mainly on government assistance. Many individuals that are eligible to receive the services offered live below the poverty line. Because immigration adds to the number of individuals needing assistance, the funding needed to support welfare programs increase. This phenomenon suggests that if the U.S. continues to aid immigrants, we will not have the resources that are needed to help American citizens. Education Over the Thanksgiving holiday I had the opportunity to visit various communities in the greater Atlanta area where individuals are living below the U.S. poverty line. While visiting the communities I was able to talk to some of the residents about their educational background, and I quickly realized that many of the residents did not have a high school diploma or GED. The information gathered supports the idea that the impact of education on poverty can be assessed by examining how receiving a degree of higher learning can potentially enable individuals to obtain a better standard of living. Education plays a role in obtaining jobs, thus individuals that do not receive an adequate education are unable to provide for their families. With the job market in the U.S. being very competitive it is imperative to have an education. In todays society there are individuals that have multiple college degrees, and they still find themselves struggling to make ends meet. A person that does not re ceive an education is more likely not to receive a desirable income that would ultimately allow them to obtain all of the basic necessities needed to survive. Consequently, those without an education bring their family into a never ending cycle of poverty. This is not to say that those without an education will automatically live poverty, but it does place individuals at a higher risk of living below the poverty level. Although lack of education influences poverty, poverty itself can have a negative effect on children trying to attain an education. Family Composition Over the course of history the family composition in America has changed drastically. No longer is the two parent household considered the norm. In fact in todays society single parent households are rapidly increasing. Growing up in a single parent home, most of my life, I know that it can be extremely difficult for a single parent to provide the basic necessities for his/her family. Changes in family composition can be considered a major influence on the growing poverty rates in the U.S. Recognizing this, in visiting different communities over the Thanksgiving break I was able to observe on first hand bases the factors that contribute to the changes in family composition. For example divorce has the ability to cause great inconsistency in a households income. Consequently divorce takes away from the economic well being of custodial parents and their children. This is mainly due to the fact that men tend to have a higher earning power then women. Thus, after a divorce women and chil dren experience a significant financial decline as a result forcing them to live below the poverty lines. Similarly, single parent households can be tied to poverty because they normally have only one potential earner. When there is only one adult earner in the household, fewer hours are worked and fewer hours are available to be worked due to childcare responsibilities. Although the family composition can contribute to poverty levels, many single parent households are forced to live in poverty despite their efforts.

Depth Perception, an Inborn Skill? :: essays research papers

In 1960, Eleanor Gibson and Richard Walk conducted an experiment to see whether depth perception is an inborn or a learned skill in humans. They conducted their experiment with a table that had a thick glass surface on half of the table and a solid base on the other half. This created an illusion of a small cliff without the dangers of actually falling. In this experiment, infants ranging from the age of 6 to 14 months were placed on the solid side of the table. The infants’ mothers were placed on the other side of table and were there to coax the infants to the other side. Of the 30 infants tested, 27 of them crossed the glass surface when called while only 3 refused.   Ã‚  Ã‚  Ã‚  Ã‚  Gibson and Walk conducted the same experiment on newborn chickens and goats with astonishing results. When chickens and goats were placed on the solid side, not a single one of them made an error to cross the â€Å"cliff.† The same test was conducted on baby rats whose results fared far worse than the results of the chickens and goats. The rats fared worse because they are nocturnal animals who rely on other senses other than vision to direct them. From this experiment, Gibson and Walk concluded that depth perception was inborn to all animals and humans by the time they achieve independent movement. This is in the case of chickens and goats at birth and for humans at around 6 months of age.   Ã‚  Ã‚  Ã‚  Ã‚  The results of Gibson and Walk’s experiment are very questionable because their control group did not consist of any socially dependant animals. Infants are socially dependent of their mother for survival and nurturing throughout their childhood. Gibson and Walk should have conducted their control experiment on socially dependant animals such as elephants or cheetahs instead of animals that do not rely heavily on their caretaker. In 1985, Sorce, Emde, Campos, and Klinnert conducted the same visual cliff experiment with human infants and their mothers. This time, the mother was instructed to maintain an expression of fear or happiness on the other side of the â€Å"cliff.

Natural Fiber Wide Use Health And Social Care Essay

Natural fibres have been in a broad usage since the development of the human race. Catching up the Eco thrust, applied scientists were looking for eco-friendly options for fictile fibre. In the due class many natural fibres have been tested and some were able to do their base going economically feasible. The present work proposes to fix and prove a Natural Fiber ( Asian Palmyra ) Reinforced Composite ( NFRC ) . The survey is planned in conformity to a 3-Level Factorial Design and find the fluctuation of Tensile Strength ( TS ) , of short and indiscriminately oriented Palmyra NFRC, under control parametric quantities such as alkali intervention clip, fiber length and fiber volume % . The present paper focuses to pattern the influence of procedure variables on TS through Response Surface Methodology. The mathematical theoretical account which is developed to foretell tensile strength is found statistically valid and sound within the scope of the factors. Keywords: A – Discontinuous support, B – Mechanical belongingss, C – Statistical properties/methods, D – Mechanical testing, E – Lay-up ( manual ) .1. Introduction:Natural fibre has been in a broad usage since the development of the human race. They had got broad acceptation in communities for their flexibleness and strength. Recent tendencies in the country of fibre reinforced complexs have drawn a twine in utilizing these natural fibres as their support. The natural fibre imparts lower lastingness and lower strength compared to glaze fibres. However, low specific gravitation consequences in a higher specific strength and stiffness than glass. Natural fibres offer good thermal, dielectric and acoustic insularity belongingss along with easiness in processing technique without have oning of tools. Most of these fibres are produced in developing states like China, India and Brazil etc. In a historical position complexs like straw reinforced walls, bows and chariots made of pasted beds played of import functions in their endurance. Though many of these fibres are limited to their epidemic parts due to high local demand for many old ages, coming of man-made fibres have affected the market of natural fibres. After being entirely used for their electromagnetic belongingss, utilizing complexs to better the structural public presentation of ballistic capsule and aircraft became popular in last two decennaries of the old century. Particularly, increased constrains and future environmental route maps, have been emphasizing automotive industries to diminish their C pes prints. These rigorous steps have become blessing to the lagging natural fibre industries, and thereby making new challenges for research workers in happening beginnings of fibre, fiction techniques and applications of na tural fibres. The easy handiness of natural fibres and fabricating have motivated research workers worldwide late to seek locally available cheap fibres and to analyze their feasibleness of support intents and to what extent they satisfy the needed specifications of good reinforced polymer complexs [ 1 ] . Many surveies proved them to be possible rivals to man-made fibre to some extent. After reexamining the bing literature available on natural fibre complexs, assorted writers had put attempts in planing complexs based on the demands of composite industry. There has been a broad assortment of literature available on natural fibres such aspen, abaca, bagasse, bamboo, banana, coir, day of the month thenar, flax, henequen, isora, jute, silk cotton, deccan hemp, oil thenar, Ananas comosus, ramee, sisal, etc. , [ 2-18 ] . Natural fibre complexs provide comparable specific strength with that of man-made fibre complexs, due the low denseness offered by natural fibres [ 19 ] . There are many parametric quantities which affect the public presentation of a natural fiber-reinforced complex. Chemical alteration improvesA fiberA matrix adhesion, their consequences and effects on the physical belongingss ofA complexs [ 20 ] . Aspect ratio has a considerable consequence on composite belongingss, henc e it is of import to conserve fiber length every bit much as possible during composite processing operations [ 21 ] . Mechanical belongingss of the composite vary with assorted sums of fibre volume ratio. But there have been a really few documents covering with Palmyra fibre, the present fibre of our involvement [ 22 – 24 ] . The Borasseus Flabellifer is a tall and vertical thenar, and can populate 100 old ages or more and make a tallness of 30 m, with a canopy of big, fan-shaped foliages several twelve found distributing 3 metres across [ 25 ] . Each and every portion of the tree is a noteworthy socio-economic value for people in Southern India. The mid-ribs of the foliages and the fibres from their chaffs are used in doing industrial coppices and brooms. The fibre has good opposition to clash and heat, and will defy many chemicals and dissolvers. The denseness of toddy palm ( 0.7 gm/cm3 ) is least among all known natural fibres that are being commercially used in fabricating natural fibre complexs. This is extremely favourable belongings from the position point of light-weightiness. The present complex can happen extended application in non-structural, low-performance utilizations. Hence, the toddy palm fibres are most suited for doing support in green composite stuffs. The present research focuses on the survey and consequence of procedure parametric quantities on the tensile strength of short and indiscriminately oriented palmyra natural fibre reinforced complexs. The decisions drawn from this is that, a successful combination of procedure parametric quantities consequences in the betterment of mechanical belongingss of the composite. In future, complexs will be manufactured even more harmonizing to an integrated design procedure ensuing in the optimal building harmonizing to parametric quantities such as form, mass, strength, stiffness, lastingness, costs, etc. The developed mathematical theoretical account will be able to demo the influence of a design alteration on each one of these parametric quantities ( here strength ) .2. RESPONSE SURFACE METHODOLOGY:Response surface methodological analysis ( RSM ) began with the work of Box and Wilson in the Journal of the Royal Statistical Society [ 26 ] . That work was motivated by the demand to run expe riments expeditiously, by a proper pick of design, and to find operating conditions on a set of governable variables that give rise to an optimum response. The cardinal thoughts in the classical RSM are developed utilizing additive multinomial theoretical accounts, chiefly first-degree and second-degree theoretical accounts, with uninterrupted response variables assumed, for the most portion, to be independently and usually distributed with changeless mistake discrepancies. This method has gone through several phases of development that are aimed at doing it more applicable to wider experimental state of affairss [ 27 ] . RSM is a aggregation of mathematical and statistical techniques that are utile for the mold and analysis of jobs in which a response of involvement is influenced by several variables and the aim is to optimise the response [ 28 ] . For, illustration, if the experimenter wishes to happen the degrees of two input variables, x1, x2 which maximize the output [ y ] of the procedure, so the procedure output is stated as: where I µ represents the noise or mistake observed in the response Y. If the expected response is denoted by E [ y ] = f [ x1, x2 ] = I · , so the surface represented by I · = f [ x1, x2 ] is called a response surface. If the individual input variable can be related to the end product variable so it is known as response curve and if the two input variables relate to the end product variable so it is known as response surface [ 28 ] . In common pattern, response surfaces are expressed diagrammatically and visualized through single secret plans, contours and 3D surface graphs.3. SPECIMEN Fabrication:The petioles of Asiatic Palmyra tree were soaked in a H2O retting armored combat vehicle for 45 yearss. After 45 yearss, the fibre can be extracted from the chaffs manually. These long uninterrupted fibres are washed exhaustively in plentifulness of clean H2O to take the excess waste ( fig. 1 ) .3.1 ALKALI TREATMENT:The obtained fibres were divided into three parts of equal weight. Th ese three groups of fibre were treated with 5 % NaOH solution for different clip continuances. The first group is treated for 2 hours, the 2nd for 4 hours and the 3rd for 6 hours. Chemical intervention with NaOH removes wet content from the fibres thereby increasing its strength. The chemical intervention besides clears all the drosss that are bordering the fiber stuff and besides stabilizes the molecular orientation. After alkali intervention, fibres were washed exhaustively in the distilled H2O and were dried for one twenty-four hours at room temperature. Then these long fibres were cut into short fibres of different lengths ( 3mm, 5mm and 7mm ) . The fibres which were treated for 2 hours with NaOH are cut into equal sums of 3mm, 5mm and 7mm fibres severally. Similarly, the fibres which were treated with NaOH for 4 hours and 6 hours were besides cut into short fibres. Therefore nine different samples of fibre were prepared which vary in fibre length and alkali intervention hours.3.2 PREPATION OF COMPOSITES:A rectangular wooden board of 300mm, 300mm was taken and wooden forms of thickness 4mm were fixed on these wooden boards with the aid of nails. These wooden forms were placed so that a infinite of 150mm, 10mm, and 4mm was obtained. After the molds of needed dimensions were prepared, wax was applied to the interior sides of the molds for easy release of the complex without lodging to the mold walls. Then the matrix was prepared by blending the hardener to epoxy. The epoxy and the hardener ratio were maintained at 10:1. To acquire goo d cured and a standard quality specimen, the epoxy and hardener must be assorted swimmingly and easy for about 10 proceedingss. Initial bed of the mold was filled with the epoxy rosin and hardener mixture and so the appropriate measure of fibres was placed such that epoxy mixture wholly spread over the fibres. Again, epoxy mixture was poured on the fibre. Therefore, the starting and stoping of the beds were of epoxy rosin. A fictile releasing house was placed on the top of the uncured mixture. Before using compaction, attempts were made to take all bubbles with roller. Finally, the compaction force per unit area of 0.05 MPa was applied equally and cured for 24 hours at room temperature. In this manner, specimens incorporating different volume fractions of fibre were prepared. These specimens were cured in the hot air oven at 600 C for 2 hours. Specimens incorporating different fibre volume fractions such as 20 % , 30 % , 40 % were prepared and 27 specimens were prepared. Natural Fib er Reinforced Composite ( NFRC ) is considered as the stuff for probe and its material composing is given in Table 4.1. The specimen ( Fig. 2 ) is prepared with the dimensions of 150mm length, 10mm breadth and 4mm thickness harmonizing to ASTM D 3039-76 [ 29 ] is used for experimentation.3.3 MECHANICAL Testing OF FIBER-REINFORCED COMPOSITE:The most basic mechanical trial is the tenseness trial. For most structural stuffs, the tensile belongingss are indispensable elements of the stuff design allowable. The complexs specimens were tested as per ASTM criterions. The tensile testing was done as per ASTM D 3039M with the aid of INSTRON-6025 theoretical account Universal Testing Machine ( Fig. 3 ) at a crosshead velocity of 2mm per minute and consequences were analyzed to cipher the tensile strength of composite samples.4. Plan AN Experiment:Recognition of job and job statement:â€Å" Determine the affect of Alkali Treatment Time, Fiber length & A ; % Fiber volume on the tensile strengt h of Natural Fiber ( short Asian Palmyra ) Reinforced Composite. †Choice of factors, degrees, scopes:Alkali Treatment Time ( A ) , Fiber length ( B ) , Fiber volume % ( C ) ( 3 Levels )Choice of the response variable:Tensile Strength of Natural Fiber Reinforced Composite ( T ) .Choice of experimental design:3 flat factorial design.Performing the experiment:Tensile strength on Universal Testing Machine ( UTM ) .Statistical analysis of informations:A, B, C relation to TDecisions and recommendations:Accomplishment of experiment aims.4.1 DESCRIPTION OF PROPOSED METHODOLOGYThe control factors considered for experiments are alkali intervention clip, fiber length and fibre volume per centum while tensile strength is considered as the end product response. The process of response surface methodological analysis comprises the undermentioned stairss [ 30 ] : Plan a series of experiments for equal and dependable measuring of the response of involvement. Develop an empirical or mathematical theoretical account of the 2nd order response surface with the best adjustments. Find the optimum set of experimental parametric quantities that produce a upper limit or minimal value of response. Represent the direct and the synergistic effects of procedure parametric quantities through two and three dimensional secret plans.4.1.1 Conducting the experimentsThe executable scopes of the procedure control variables considered are listed in Table 4.2. These values correspond to the conditions at which there is maximal consequence on tensile strength as reported by other writers for different natural fibres. The belongingss of Asiatic Palmyra fibre reinforced complexs with different fibre lengths, clip continuances of Alkali intervention and fibre volume per centums under these conditions, the probes are presented in the undermentioned Tables 4.3, 4.4 and 4.5. Sample of tensile trial studies are shown in Fig. 4. The tensile strength of the specimen made of epoxy and hardener is 12.44MPa.4.2 DEVELOPMENT OF EMPIRICAL MODELSThe informations collected from typical experiments refering to end product responses, Tensile Strength from Tables 4.3, 4.4 and 4.5 are used to implement the proposed methodological analysis. The demand in developing the mathematical relationships is to associate the tensile strength to the procedure parametric quantities thereby easing the optimisation of the procedure parametric quantities. Design Expert, 8.0v [ 31 ] , statistical analysis package, is used to calculate the arrested development coefficients of the proposed theoretical accounts. The interaction effects of the procedure parametric quantities and tensile strength are important and hence the 2nd order theoretical accounts are postulated. The multinomial is fitted and the relationships obtained for the end product responses are given below:4.2.1 Adequacy trial:The developed empirical theoretical accounts are tested for their adequateness utilizing the undermentioned trials:4.2.1.1 Analysis of Variance [ ANOVA ] :ANOVA is carried out for the quadratic response surface theoretical accounts. The statistics of ANOVA for Tensile Strength is given in the Table 4.6. In instance of tensile strength, it can be observed from Table 4.6 that the value of â€Å" Probability & gt ; F † for the theoretical account is less than 0.05, which indicates that the theoretical account is important [ 28 ] .4.2.1.2 Multiple arrested development coefficients:To look into whether the fitted theoretical accounts really describe the experimental information, the multiple arrested dev elopment coefficient [ R2 ] is computed. R2 statistic is defined as the ratio of variableness explained by the theoretical account to the entire variableness in the existent experimental informations and is used as a step of goodness of fit [ 28 ] . If R2 attacks to integrity, the better the theoretical account fits the experimental information. In other words, it is the proportion of fluctuation in the dependant variable [ response ] that can be explained by the forecasters [ factor ] in the theoretical account. From Table 4.6, R2 for tensile strength is found to be 0.9276. This shows that the second-order theoretical account can explicate the fluctuation in tensile strength up to the extent of 92.76 % . The adjusted R2 efforts to give a more appropriate value to gauge R2. Adjusted R2 can be computed utilizing the expression 1- [ [ 1- R2 ] * [ N-1 ] / [ N-k-1 ] ] , where N is the figure of observations and K is the figure of forecasters [ 28 ] . When N is little and K is big and there will be a much greater difference between R2 and adjusted R2 [ because the ratio of [ N-1 ] / [ N-k-1 ] will be much less than 1. By contrast, when the figure of observations is really big compared to the figure of forecasters, the value of R2 and adjusted R2 will be much closer because the ratio of [ N-1 ] / [ N-k-1 ] will near 1. From Table 4.6, adjusted R2 for tensile strength is found to be 0.8915. It can be observed that the values of R2 and adjusted R2 are much closer to each other. The developed mathematical theoretical accounts are farther checked for their adequateness utilizing normal chance secret plan of remainders. The diagnostic secret plans are drawn to look into whether the informations are usually distributed and for any premise is violated. Therefore, the normal chance secret plan of remainders for the responses, tensile strength is plotted. Normal chance secret plans are used to measure whether informations come from the normal distribution. The statistical process makes the premise that an implicit in distribution is normal [ 28 ] . Thus normal chance secret plans can supply confidence that the premise is justified, or else supply a warning of jobs with the premise. An analysis of normalcy typically combines normal chance secret plans with hypothesis trials for normalcy. In a normal chance secret plan, if all the information points autumn near the line, an premise of normalcy is sensible. Otherwise, the points will swerve off from the line, and an premise of normalcy is non justified. The normal chance secret plans of the remainders for the end product responses, tensile strength is shown in Fig. 5 and it can be observed that the remainders are located on consecutive line, which means that the mistakes are distributed usually. The 3D surface graphs for tensile strength are shown in Figs. 6 – 8. All have curvilinear profile in conformity to the quadratic theoretical account fitted. Fig. 6 shows the interaction consequence of fibre length and alkali intervention clip on tensile strenth at different degrees of fibre volume per centum. It is clear from the figure that at highest values of fibre length and alkali intervention clip the tensile strenth attains largest value of 27MPa. At high value of alkali intervention clip ( 6Hrs ) and low value of fiber length ( 3mm ) , tensile strength varies from 17-19 MPa. where as at low value of both fiber length and alkali intervention clip the tensile strength is lowest. Fig. 7 depicts the consequence of fibre volume per centum and alkali intervention clip on tensile strength at different degrees of fibre length. As indicated in the secret plan the tensile strength additions with addition in both fiber volume per centum and alkali intervention clip. The highest value of tensile strength of about 27MPa is recorded at high values of fibre volume per centum and alkali intervention clip. Fig. 8 describes the interaction consequence of fibre volume per centum and fiber length on tensile strength of short and indiscriminately oriented Palmyra fiber composite at different degrees of base intervention clip. As the fibre volume per centum additions from 20 – 40 % and fibre length increasing from 7 – 3mm so tensile strength additions from 13 – 27 MPa. The combined consequence of fibre length and fibre volume per centum increases the tensile strength of composite. It can be said that the empirical theoretical accounts developed were moderately accurate, for Tensile strength.5 DecisionThe proposed work is on the survey and consequence of procedure parametric quantities on the tensile strength of short and indiscriminately oriented toddy palm fibre reinforced complexs. The experimental probe on mechanical behavior of palmyra fibre reinforced complexs leads to the undermentioned decisions: Tensile strength ( TS ) , of the toddy palm fibre reinforced compos ite stuff is greatly influenced by alkali intervention clip, fiber length and fibre volume fraction. The quadratic theoretical account developed by RSM can be used to foretell the tensile strength of the toddy palm fibre reinforced composite stuff at 93 % assurance degree. But the cogency of the theoretical account is limited to the scope of parametric quantities considered for the probe. The truth of the developed theoretical account can be improved by including more figure of parametric quantities and degrees. Further, mathematical theoretical accounts can be developed by taking multiple responses, with different scopes of procedure variables and the composite design can be optimized based on the demand of the clients.

What Is Genetic Engineering - 954 Words

What is genetic engineering? Genetic engineering is the modification of an organisms genetic composition by artificial mans, it often involves the transferring a specific traits- genes from one organism to the other- this could be a plant or an animal. It is the deliberate modification of the characteristics of an organism by manipulating its genes- the genetic material. What is genetic engineering used for? It is used to change the genetic makeup of cells which spontaneously includes the transfer of genes within and across species. Genetic engineering is also used to mass produce insulin, human growth hormones, follistim (which is used for treating infertility), human albumin, monoclonal antibodies, antihemophillic factors, vaccines and many other drugs. Genetic engineering: †¢ Produces an unique set of genes †¢ Genes can be swapped/ exchanged across species Genetic engineering, sometimes also referred as genetic modification, it is the process of altering the DNA in an organism’s genome. This may mean changing one base pair (A-T or C-G), deleting a whole region of DNA, or introducing an additional copy of a gene. It may also mean extracting DNA from another organism’s genome and combining it with the DNA of that individual. Genetic engineering is used by scientists to enhance or modify the characteristics of an individual organism. Genetic engineering can be applied to any organism, from a virus to a sheep.Show MoreRelatedWhat Are Genetic Engineering?1634 Words   |  7 Pagesstrategies include endowment of nutrient supplements, enrichment of processed foods to contain more nutrient content, and enhancement of staple crops with increases essential nutrient contents, known as biofortification (Zhu et al., 2007). 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