Relationship Of Emotional Intelligence Education Essay

Present survey was conducted to happen out the relationship between emotional intelligence and optimism with academic accomplishment in A degree pupils. A sample of 50 pupils in which 25 misss and 25 male childs, age ranged from 16 to 20 old ages were taken from 3 schools. They completed two questionnaire Life Orientation Test-Revised and Schutte Self Report Emotional Intelligence Test. And Academic Achievement was measured through classs of the pupils from their school record. Pearson correlativity and t-test was applied on informations that revealed 1 ) extremely important relationship between emotional intelligence, optimism and academic accomplishment. 2 ) There is no important gender difference on the graduated tables of Life Orientation Test-Revised and Schutte Self Report Emotional Intelligence Test. Findingss showed that there is a positive relationship of emotional intelligence and optimism with academic accomplishment therefore it is of import for the parents and the instru ctors to do the kids learn to be optimistic and learn to command and pull off their emotions as good.IntroductionThis research aims to happen the relation of emotional intelligence and optimism with academic accomplishment among pupils of ( A degrees ) higher secondary school. Academic accomplishment merely did non picture that the pupil is emotionally intelligent or optimistic and can make good in all stages of life. Traditionally an persons smarting is measured in footings of his or her IQ, it is assumed that professionals and experts have high IQ, nevertheless IQ serves as merely the index of numerical and analytical ability, it has little or no significance with success in professional and personal life because harmonizing to Goleman ( 1995 ) IQ entirely is no more the step for success ; emotional intelligence, societal intelligence, and fortune besides play a large function in a individual ‘s success, it is the Emotional Intelligence which turns the human being into a successful and comfortable because they knew their emotions and can place other ‘s every bit good and able to pull strings them or command them in better manner and if the individual is optimistic so his/her optimistic thought and emotional intelligence will decidedly escorts him/her to successful life, consequently this research aspires to falter on the relation of emotional intelligence and optimism with academic a ccomplishment. Emotional intelligence ( EI ) can be defined as ; it is being able to supervise our ain and others feelings and emotions, to know apart among them, and to utilize this to steer our thought and actions ( Salovey & A ; Mayer, 1990 ) . The property of EI is basically comprised of four basic constituents ; the ability to acknowledge and show emotion ; being able to entree and utilize emotions to enable idea ; the ability to understand emotions ; and to pull off emotions. The emotionally intelligent individual is skilled in four countries: identifying, utilizing, understanding and modulating emotions ( Salovey & A ; Mayer, 1993 ) . Then it can be said that success depends on several intelligences and on the control of emotions. John Mayer and Peter Salovey ( 1990 ) found that some people were better than others at things like placing their ain feelings, placing the feelings of others, and work outing jobs affecting emotional issues. Harmonizing to them EI is a true signifier of intelligen ce which has non been scientifically measured. They proposed that emotional intelligence trades with the emotions in a manner that if person is emotionally intelligent he/she will be better able to pull off his/her emotions and incorporate them. Harmonizing to Cooper and Sawaf ( 1997 ) , emotional intelligence is the ability to logically pull off the emotions, understands and to applies these controlled and managed emotions to link and act upon. These writers lay more accent on the application portion of EI in organisations. In simple words emotional intelligence is utilizing your emotions intelligently. The first measure to this would be acknowledging and understanding your emotions. For illustration, if your foreman shriek at you in office today because you came in late, coming place and shouting at your childs would non be the best thing to make. It will merely maintain the negative feeling drifting from one individual ‘s caput to another. An emotionally intelligent individual in this state of affairs would first acknowledge that he is angry because his foreman yelled at him. Dr. Goleman ( 1999 ) asserts that consciousness of our feelings besides enables us to comprehend the feelings of others accurately -to be empa thic, to experience with another individual. In this instance, understanding that your foreman yelled because you came tardily, will do you recognize that being on clip will do things better. Therefore, covering with our emotions rationally and intelligently will do events better. When psychologists began to compose and believe about intelligence, they focused on cognitive facets, such as memory and problem-solving. ( Cherniss, 2000 ) . However, there were research workers who recognized early on that the non-cognitive facets were besides of import. For case, David Wechsler defined intelligence as â€Å" the sum or planetary capacity of the person to move purposefully, to believe rationally, and to cover efficaciously with his environment † ( Wechsler, 1958 ) as cited in ( Cherniss, 2000 ) . Wechsler referred to non-intellectiveE? every bit good as intellectiveE? by which he meant affectional, personal, and societal factors. Wechsler was non the lone research worker who saw non-cognitive facets of intelligence to be of import for version and success. Robert Thorndike as cited in ( Cherniss, 2000 ) , to take another illustration, was composing about societal intelligenceE? in the late mid-thirtiess ( Thorndike & A ; Stein, 1937 ) . Unfortunately, the wor k of these early innovators was mostly disregarded or overlooked until 1983 when Howard Gardner as cited in ( Cherniss, 2000 ) , began to compose about multiple intelligence. Gardner ( 1983 ) proposed that intrapersonal and interpersonal intelligences are every bit of import as the type of intelligence typically measured by IQ. Academic accomplishment is the ability to analyse, synthesise, and measure information, efficaciously communicate with others, proficient in scientific discipline, mathematics, computer/technical accomplishments, foreign linguistic communications, every bit good as history, geographics, and planetary consciousness, capable of collaboratively working in culturally diverse scenes, leaders who see undertakings through to completion, responsible determination shapers who are self-motivated and active political participants and ethical persons who are committed to their households, communities, and co-workers ( Nidds & A ; McGerald, 1996 ) . The relationship of emotional intelligence and academic accomplishment can be depicted from this survey conducted by Elias, M. J. , Gara, M. , Schuyler, T. , Brandon-Muller, L. R. , & A ; Sayette, M. A ( 1991 ) that the learning emotional and societal accomplishments is really of import at school, it can impact academic accomplishment positively non merely during the twelvemonth they are taught, but during the old ages that follow every bit good. Teaching these accomplishments has a long-run consequence on accomplishment. Emotional intelligence effects the academic accomplishment in positive ways and it remains with the person by the terminal of life. The emotions, feelings, and values are critical for a individual ‘s well being and accomplishment in life ( Ediger, 1997 ) . Quality emotions and feelings help pupils give their best potency in the schoolroom. The pupils who are aversive and believe negatively can non concentrate for a long clip and hold more trouble in making their potency than others. Abdullah, Maria. , Chong. , Elias, Habibah. , Mahyuddin. , Rahil. , Uli. , Jegak ( 2004 ) conducted research to analyze pupils overall degree of EQ. Research findings indicate that there is positive relationship between EQ and academic accomplishment. The pupil ‘s positive relationship with academic accomplishment indicated that if the pupil performed better on his/her faculty members so he/she will be emotionally intelligent excessively. And the other determination of this survey is the pupils have negative relationship of EQ with the negative affect ( choler, defeat and anxiousness ) which showed that the pupils with high Equivalents have low negative affect or negative relationship with negative affect ( choler, defeat and anxiousness ) . Natalio. E. A. , Duran, L. R ( 2006 ) examined the relationships between perceived emotional intelligence ( PEI ) , dispositional optimism/pessimism and psychological accommodation ( sensed emphasis and life satisfaction. Findingss confirmed that emotional lucidity and temper fix are important in foretelling sensed emphasis and life satisfaction after the influence of optimism/pessimism were controlled. Thus this research predicted that striplings with high perceptual experiences of emotional abilities ( in specific, high lucidity and fix ) by and large show higher life satisfaction and lower perceived emphasis. Furthermore, to some grade, this consequence might be considered as independent from their ain optimistic or pessimistic temperaments. James, D. A. , Parker, R. E. , Creque, D. L. , Barnhart, J. I. , Harris, S. A. , Majeski, L. M. ( 2004 ) found the relationship between emotional intelligence and academic accomplishment in high school Trent university Peterborough. Variables were compared in ( extremely successful pupils, reasonably successful, and less successful based on grade-point-average for the twelvemonth ) , academic success was strongly associated with several dimensions of emotional intelligence. Sing that EI can be a possible determiner of accomplishment in working life, therefore the survey aims to find if there is any important difference in EI of the local and foreign pupils, if the emotional intelligence consequence the academic accomplishment and it besides differs in local and foreign pupils. This survey reveals that people be evaluated on their ain virtue of emotional intelligence instead their academic success ( James & A ; Irene, 2003 ) . Empirical research has produced grounds proposing that the ability to measure, modulate and use emotions ( i.e. emotional intelligence ) is of import to the public presentation of workers, survey reveals that the potency for enhanced emotional capablenesss could be improved and there is strong relationship of emotional intelligence and academic accomplishment ( Jaeger, 2003 ) . The Oxford Dictionary of English defines optimism as â€Å" hopefulness and assurance about the hereafter or the success of something † . Optimism is a province where people believe that there are more opportunities of things traveling good and good, instead than their traveling bad. Harmonizing to Seligman ( 1991 ) optimism is: â€Å" Changing the destructive things you say to yourself when you experience the reverses that life trades us, is the cardinal accomplishment of optimism † . Optimism can besides be defined as the inclination to believe that one will by and large see good versus bad results in life ( Scheier & A ; Carver, 1987 ) . It is the mental province wherein people believe that things are more likely to travel good for them than travel severely, it is ever anticipating good for the hereafter and holding faith on 1s ownself. Seligman ( 1991 ) position ‘s that optimism is a belief that the actions of single affairs. Optimism is an explanatory manner, and single with this manner or optimistic persons 1 ) see that the causes of good events in life are lasting ( e.g. , due to their abilities, their traits and their cistrons etc. ) and bad events have their causes as temporarily, ( 2 ) they generalized good events alternatively of bad 1s, ( 3 ) do n't fault themselves for bad events alternatively see that good events are because of them ( Gatz, 1998 ) . The chief advantages of optimism may be found in increasing continuity and committedness during the stage of action toward a chosen end, and in bettering the ability to digest unmanageable agony. Mentions and farther reading may be available for this article. To see mentions and farther reading you must buy Optimism is another emotional competency that leads to increased productiveness. Optimistic persons when have assurance on themselves and hold good outlooks and hope, it will increase the public presentation in better manner, optimistic persons can break trades with life stressors, when these stressors could non consequence their good public presentation the productiveness or accomplishment in any stage of life will increase. ( Seligman, 1990 ) . On the whole, research on optimism indicates that a positive orientation toward life leads to pull offing hard state of affairss with less subjective emphasis and less negative impact on physical wellbeing. Optimists by and large accept world more readily and seek to take active and constructive stairss to work out their jobs, whereas pessimists are more likely to prosecute in flight and tend to give up in their attempts to accomplish ends ( Scheier & A ; Carver, 1992 ) . Another argument sing optimism is that whether it can or can non be learned. Several researches show that optimism is a manner of believing that can be learned. Seligman ( 1991 ) , in his book, Learned Optimism told that optimism can be learned. Researches support the theory that being optimistic has many benefits, and that being pessimistic has many costs, on a individual ‘s overall quality of life ( McCambridge, Strang, Butler, Keaney, & A ; Anderson, 2006 ) . Harmonizing to another survey, optimism leads to break academic public presentation as optimistic persons can break trade with the stressors and therefore they give better consequences ( Whipple, & A ; Gootman, 2001 ) . In one survey conducted on optimism it is noted that optimism and thought are positively related with job resolution, optimistic individual tackle state of affairs in a better manner and happen out better solution ( Schwarz, & A ; Tesser, 2001 ) . In another survey conducted by Merrell ( 2001 ) it is proved that an optimistic individual can break header with troubles and is more flexible and lasting in bad state of affairss and adversities of life so a pessimistic individual ( Merrell, 2001 ) . Research shows that optimist people can break trade with failure, foremost because they think of failure as something that can be changed and secondly they can pull off emphasis and lift better from adversities ( Whipple, & A ; Gootman, 2001 ) . Page and Wayne ( 2007 ) found that academic optimism is a school feature that predicts pupil accomplishment even commanding for socioeconomic position. The survey presented that positive psychological science variables ( hope, optimism, heedfulness ) are stronger in high accomplishing pupils than in low achieving pupils. ( Pajares, 2001 ) . Nonis, A. S. & A ; Wright, D ( 2003 ) investigated that pupil public presentation has become an progressively of import subject in higher instruction, the survey aimed to detect that to what extent pupil ability, accomplishment, striv1ing and situational optimism influence public presentation results and to look into the synergistic effects of ability and accomplishment every bit good as situational optimism on pupil public presentation results. In educational establishments, success is measured by academic public presentation, or how good a pupil meets criterions set out by local authorities and the establishment itself. In academic achievement pupil ‘s public presentation will be measured through classs of a twelvemonth. Academic accomplishment is defined as â€Å" the quality and measure of a pupil ‘s work † . The survey aims to mensurate the academic accomplishment in footings of emotional intelligence and optimism, for this intent the sample will be taken from the higher Secondary School pupils of A degrees. A degrees is considered the alternate making in Pakistan. Most common alternate making is the ‘General Certificate of Education ‘ or GCE, where HSSC is replaced with ‘Advanced Level ‘ or A Level severally. GCE AS/A Level are managed by British scrutiny boards of ‘Cambridge Assessment ‘ or CIE of the company of ‘University of Cambridge Local Examinations Syndicate ‘ or UCLES. Another British scrutiny board that offers GCE AS/A Level is Edexcel of the company of Pearson PLC. However, CIE makings of GCE are much preferred option than those of Edexcel. These makings are coming to be more well-thought-of socially and in footings of occupation employment. In Pakistan the most of the pupils are in schools which are SCC or HSSC but for few old ages people who are stable financially preferred the alternate making system because there is a large difference in both school systems, from classs to extracurricular activities, even learning manner is different and most of the population of Pakistan belongs to the in-between category so people can non afford their kids to be in O/A degrees. Academic success is of import because it is strongly linked to the positive results value for kids. Research shows that grownups with high degrees of instruction are more likely to be employed, and to gain higher wages ( National Center for Education Statistics, 2001 ; U.S. Department of Commerce, Bureau of the Census, 1999 ) . Newhouse & A ; Beegle ( 2005 ) evaluated the impact of school type on academic accomplishment of junior secondary school pupils in Indonesia. The findings are from Indonesia showed that private schools provide with kids the best instruction and set more attempt in the surveies of kids. In the present survey sample is from the private ( British school ) , emotional intelligence and optimism will be measured from the participants from these schools. Research besides shows that people who are academically successful are more stable in their employment ; more likely to hold wellness insurance ; are less dependent on public aid ; are less likely to prosecute in condemnable activity ; are more active as citizens and charitable voluntaries ; and are healthier ( National Alliance of Business, 1998 ) . Research workers have been challenged to travel beyond socioeconomic position in the hunt for school degree features that make a difference in pupil accomplishment. The intent of the survey was to place a new concept academic optimism that is holding a positive attitude towards the academic accomplishment and towards instruction and so explicate the pupil accomplishment while commanding socioeconomic position ( Hoy et al, 2006 ) .RationaleA degree pupils are largely at the age of stripling which is the peak clip to make up one's mind their calling and personality development is finishing and they are traveling through tonss of emotional perturbations because there is a batch of surveies pressure which can take to depression and low self-pride and sometimes resulted in self-destruction so the survey will assist to understand that being positive and emotionally intelligent pupils will be dining in academic accomplishment. It will supply the degree of optimism in A degree pupils that ca n assist instructors and parents to develop optimism in their striplings because optimism is non ever inborn, it can b erudite every bit good. It will uncover the relationship of optimism, emotional intelligence and academic accomplishment to ease the pupils opt their line of concern chances, and calling choice. A degrees pupils are taken as a sample because of their more or less same socio economic position.HypothesissThe survey hypothesized that: There is a positive correlativity between emotional intelligence and optimism with academic accomplishment. The more higher the emotional intelligence and optimism the greater will be the academic accomplishment.MethodParticipantsFor the present survey â€Å" Purposive sampling technique † was used for the sample choice, the sample consisted of the 45 misss and male childs in equal figure from the British schools ( Cambridge board and Edexcel affiliated schools ) of Rawalpindi. Data was collected from three schools including Froebel ‘s, Saint Marry and Roots School System. All the pupils of A Levels from these schools were taken as the sample and the age of participants ranged from 16-20 old ages. Inclusion Standards All the striplings ‘ age runing from 16 – 22 old ages and pupils of Angstrom degrees were the portion of the survey. New initiations or the pupils at least in school for more than one twelvemonth were besides included in the sample. Exclusion Standards Adolescents with any disablement ( mental or physical ) and below age 16 old ages or above 20 old ages were non included in the survey.InstrumentThe protocol consists of the followers: Data Demographic Sheet Schutte Self Report Emotional Intelligence Test ( Schutte, Malouff and Bhullar, 1998 ) Life Orientation Test ( Scheier, Carver and Bridges, 1994 )Data Demographic SheetDemographic information was collected in footings of age, gender, school, chief topic, front-runner Subject, extracurricular activities, birth order and personal rating for academic accomplishment. Schutte Self Report Emotional Intelligence Test ( SSEIT ) ( Schutte, Malouff and Bhullar, 1998 ) In the present survey emotional intelligence was operationally defined in footings of tonss on the Schutte Self Report Emotional Intelligence Test, where high tonss indicate more characteristic of emotional intelligence and low tonss indicate that the individual is non much emotionally intelligent. Schutte self report emotional intelligence graduated table is a 33 point self report step of emotional intelligence developed by Nicola S. Schutte, John M. Malouff and Navjot Bhullar in 1998. Schutte self study emotional intelligence graduated table ( SSEIT ) is based on Salovey and Mayer ‘s ( 1990 ) original theoretical account of emotional intelligence. This theoretical account comprised of four basic constituents ; the ability to acknowledge and show emotion ; being able to entree and utilize emotions to enable idea ; the ability to understand emotions ; and to pull off emotions. The most widely used subscales derived from the 33 point Assessing Emotion Scale are those based on four factors. Which were described as: perceptual experience of emotion, pull offing emotions in the ego. Social accomplishments or pull offing other ‘s emotions and vitamin D utilizing emotion. The points consisting the subscales based on these factors are: perceptual experience of emotion ( points 5, 9, 15, 18, 19, 22, 25, 29, 32, 33 ) , pull offing emotions in the ego. Social accomplishments or pull offing other ‘s emotions ( points 2, 3, 10, 12, 14, 21, 23, 28, 31 ) and utilizing emotion ( points 6, 7, 8, 17, 20, 27 ) . All points are included in one of these subscales. Respondents rate themselves on the point utilizing the five point graduated table. Respondents require mean five proceedingss to finish the graduated table. Entire graduated table mark are calculated by contrary hiting point 5, 28 and 33, and so summing all points. Tonss can run from 33 to 165, with higher hiting indicate more characteristic emotional intelligence. The points for the original Assessing Emotions Scale were in English ( Schutte et al, 1998 ) and most surveies using the graduated table have used the English linguistic communication version of the graduated table. In the present survey the original English linguistic communication version was used. Life Orientation Test ( LOT ) ( Scheier, Carver and Bridges, 1994 ) In the present survey Life Orientation Test is operationally defined in footings of Life Orientation Test where high tonss indicate that there is more optimism and low tonss indicate the pessimism. Life orientation trial is the 10 point trial developed by Michael F. Scheier, Charlse S. Carver and Michael W. Bridges in 1994. Respondents rate themselves on the point utilizing the five point graduated table ( 1-5 ) . Respondents require mean five proceedingss to finish the graduated table. Entire graduated table mark are calculated by contrary hiting point 3, 7 and 9, and so summing all points. Tonss can run from 10 to 50, with higher hiting indicate more optimism. In the present survey the original English linguistic communication version was used.Academic AchievementAcademic accomplishment was measured through the classs of the participants of their last semester ; all the schools included in the survey had the same scaling system of Cambridge System and Edexcel. The division of classs harmonizing to the per centums are given below: A* = Above 90 % A = 80 – 89 % B = 70 – 79 % All the participants fall between these classs. No participant was below 70 % .ProcedureData was collected from the British schools of Rawalpindi, three schools including Froebel ‘s, Saint Marry and Roots School System. For the intent of roll uping informations consent was taken from the school governments and the intent of the survey was explained to them ( school disposal ) . After acquiring their blessing, mention letters were taken for their schools. Consent from participants was taken after explicating them about the nature and intent of survey. Pilot survey was done in the school Froebel ‘s to look into the dependability of both graduated tables Schutte self report emotional intelligence graduated table ( r = .72 ) and life orientation trial ( R = .67 ) . Six pupils were included in the pilot survey. After the pilot study the dependability obtained from questionnaires showed that the questionnaires are dependable so informations aggregation procedure was started. Participants were taken from the British schools of Rawalpindi with the aid of well-thought-of coordinator of A degrees. Participants were given verbal direction sing questionnaires, and they were provided with two questionnaires ( SSEIT, LOT-R and demographic sheet ) and their inquiries about subject were answered. Average clip taken by participants to make full the questionnaire was about 15 proceedingss. After the completion of the informations aggregation the classs of the each participant of their last semester were taken from their school record with the permission of the school governments. Data aggregation was completed in approximately 20 yearss. After informations aggregation, information was entered in Statistical Package for Social Sciences ( SPSS 0.13 ) and analyzed the informations i.e. frequences, per centums, pearson correlativity and t-test was applied on the information.ConsequencesStudy was conducted to happen out the relationship between emotional intelligence and optimism with academic accomplishment. A sample of 50 A degree pupils ( both misss and boys=25 ) were selected from 3 schools of Rawalpindi, and protocols were administered on them. Then the informations collected was analyzed in SPSS. For this purpose Pearson correlativity was used. And besides to see whether there is any Gender difference sing variables of optimism and emotional intelligence in the information independent sample t-test was applied.Table 1Frequency and Percentage of demographic variable. ( N = 50 ) Variable Label Frequency ( degree Fahrenheit ) Percentage ( % ) Gender Girls 25 50 % Male childs 25 50 % Age 16-18 old ages 30 60 % 19-20 old ages 20 40 % School ‘s Name Classs Rootss Froebel ‘s 17 34 % 16 32 % Saint Marry Average ( 70- 79 % ) Above Average ( 80-89 % ) Exceptional ( above 90 % ) 17 34 % 1 20 29 2 % 40 % 58 % Table shows frequence and per centum of participants harmonizing to demographic variables of age, gender school name and classs.Table 2Frequency and per centum of demographic variables in footings of chief topic, personal rating of classs and extracurricular activities. ( N = 50 ) Variable Label Frequency ( degree Fahrenheit ) Percentage ( % ) Chemistry 6 12 % Biology 8 16 % Main Subject English 2 4 % Computer Sciences 9 18 % Mathematics ‘s Music Humanistic disciplines Physicss Accounting Economicss 3 2 1 10 6 3 6 % 4 % 2 % 20 % 12 % 6 % Average 14 28 % Personal Evaluation Of Grades Above Average 26 52 % Extracurricular Activities Exceeding None Indoor merely Out Door merely Both indoor & A ; outdoor 10 7 10 18 15 20 % 14 % 20 % 36 % 30 % Table shows frequence and per centum of participants harmonizing to demographic variables of chief topic, personal rating of classs and extracurricular activities.Table 3Pearson Correlation between Life Orientation Test-Revised ( LOT-R ) , Schutte Self Report Emotional Intelligence ( SSEIT ) and Academic Achievement. Optimism Academic accomplishment Emotional intelligence Percept of emotion Pull offing emotion in ego Using emotion Optimism–.322* .367** .134 .495** .245 Academic accomplishment .322*–.421** .204 .398** .421** Emotional intelligence .367** .421**–.755** .866** .662** Percept of emotion .134 .204 .755**–.497** .280* Pull offing emotion in ego .495** .398** .866*8 .497**–.511** Using emotion .245 .421** .662** .280* .511**–**pa†°Ã‚ ¤0.01 *pa†°Ã‚ ¤0.05 Table shows individual co-relation ( two-tailed degree ) between optimism, emotional intelligence, academic accomplishment and sub graduated tables of emotional intelligence ( perceptual experience of emotion, pull offing emotion in ego and utilizing emotion ) . Relationship between the optimism and academic accomplishment is significantly positive ( r=.322* , pa†°Ã‚ ¤ .05 ) . Relationship between optimism and emotional intelligence is important and positive ( r=.367** , pa†°Ã‚ ¤0.01 ) . Relationship between emotional intelligence and academic accomplishment is besides positive and important ( r=.421** , pa†°Ã‚ ¤0.01 ) .Table 4Mean, SD, and value of t-test related to optimism. ( N=50 ) Variable N M South dakota T P Optimism Girls Male childs 25 36.68 5 2.009.987 25 34 4 Table shows that there is no important difference in degree of optimism in misss and male childs. It showed that on mean tonss on life orientation graduated table ( mensurating optimism ) have no considerable gender differences.Table 5Mean, SD, and value of t-test related to emotional intelligence. ( N=50 ) Variable N M South dakota T P Emotional intelligence Girls Male childs 25 126 14.6 1.53.582 25 121 11.8 Table shows that there is no important difference in degree of optimism in misss and male childs. It showed that on mean tonss on Schutte Self Report Emotional Intelligence Test ( emotional intelligence ) have no considerable gender differences.Table 6Cross tabular matter of the academic accomplishment of the pupils harmonizing to the scopes of optimism ( N=50 ) . Variables Classs degree Fahrenheits ( % ) Optimism 0-36 Average 37-50 Above Average Academic Accomplishment A* Grade A Class B Grade 14 ( 28 % ) 16 ( 32 % ) 1 ( 2 % ) 15 ( 30 % ) 4 ( 8 % ) 0 ( 0 % ) Table shows that the pupils with A* classs 15 ( 30 % ) were above norm which indicates that the pupils are more optimistic than the pupils with B class 1 ( 2 % ) 0f norm and ( 0 % ) of above norm. A graders are merely ( 8 % ) above norm, which means more optimistic pupils perform good in faculty members.Table 7Cross tabular matter of the academic accomplishment of the pupils harmonizing to the scopes of emotional intelligence. ( N=50 ) . Variables Classs degree Fahrenheits ( % ) Emotional Intelligence 0-124 Average 125-165 Above Average Academic Accomplishment A* Grade A Class B Grade 12 ( 24 % ) 14 ( 28 % ) 1 ( 2 % ) 17 ( 34 % ) 6 ( 12 % ) 0 ( 0 % ) Table shows that the pupils with A* classs 17 ( 34 % ) were above norm which indicates that the pupils are more emotionally intelligent than the pupils with B class 1 ( 2 % ) 0f norm and ( 0 % ) of above norm. A graders are merely 6 ( 12 % ) above norm, which means more emotionally intelligent pupils perform good in faculty members.DiscussionThe present survey examined relationship of emotional intelligence and optimism with academic accomplishment in A degree pupils. Main aims of the survey were to happen out the relationship of emotional intelligence and optimism with academic accomplishment in A degree pupils that whether the pupil accomplishing high classs is emotionally intelligent and optimistic. To carry through the nonsubjective 50 Students were selected from three different schools of Rawalpindi, both misss and male childs. And they completed the protocols ( Schutte Self Report Emotional Intelligence Test and Life Orientation Test-Revise ) . Consequences indicate the relationship of emotional intelligence and optimism with academic accomplishment. Table demonstrates that emotional intelligence and optimism has a important relationship with academic accomplishment. It means that if emotional intelligence and optimism is high in pupils it would ensue in better positive academic accomplishment. If the pupil is emotionally intelligent and optimistic so he or she will stand out in his faculty members. Consequences showed the positive relationship of emotional intelligence and optimism with academic accomplishment that if the pupil is executing good in faculty members he/she is emotionally intelligent and optimistic. Relationship is besides been proved with the old research, Abdullah et Al ( 2004 ) found the positive relationship between EQ and academic accomplishment. Another survey examined that the emotions, feelings, and values are critical for a individual ‘s well being and accomplishment in life, and if these emotions are used in positive mode so it will take to success. ( Ediger, 1997 ) . Abisamra ( 2000 ) found no important relationship between emotional intelligence and academic accomplishment, the survey was conducted on 11th graders. Another survey showed the positive relationship among emotional intelligence and academic accomplishment that pupils who score high on emotional intelligence tend to hold good academic public presentation as compared to those who score low on emotional intelligence graduated table ( Farooq, 2003 ) . There is significantly positive relationship between emotional intelligence and academic accomplishment ( r=.421** , pa†°Ã‚ ¤0.01 ) which means the pupil making good in his/her faculty members besides scored high on emotional intelligence ( see Table 3 ) .A The relationship of optimism and academic accomplishment has besides been proved with old researches, optimism leads to break academic public presentation as optimistic persons can break trade with the stressors and therefore they give better consequences ( Whipple, & A ; Gootman, 2001 ) . Another survey conducted by Pajares ( 2001 ) findings indicates that concepts like optimism drawn from positive psychological science can assist explicate academic motive and accomplishment. The optimistic pupil can break header with his/her the day-to-day stressors of academic life and have the positive outlooks for the hereafter, consequences showed the significantly positive relationship between optimism and academic accomplishment ( r=.322* , pa†°Ã‚ ¤0.05 ) ( see Table 3 ) . Consequences on gender difference indicated no important difference in misss and male childs. It reveals that no gender differences sing emotional intelligence and optimism. T-test was applied to see the gender difference in informations. It revealed the same consequences as concluded by the Heinonen ( 2006 ) and his co-workers ; they besides concluded that there is no gender difference on LOT-R mensurating optimism. T-Test applied on the life orientation test-revised ( mensurating optimism ) for gender difference showed that there is no important difference in degree of optimism in male and female ( t=2.009, p=.987 ) ( see Table 4 ) . T-Test was applied to see the gender difference in emotional intelligence and it was revealed that no important difference in misss and male childs ( t=1.53, p=.582 ) ( see Table 4 ) . Cross tabular matter was applied to see the scopes and the degrees of the both graduated tables harmonizing to the academic accomplishment ( classs ) of the pupils, it was revealed that the pupils with class A* are more optimistic than the class B pupils, it proves the hypotheses that the more optimistic pupils achieve high classs or are academically good ( see Table 6 ) . Cross tabular matter of the emotional intelligence harmonizing to academic accomplishment besides proves that the emotionally intelligent pupils performed good on faculty members ( see Table 7 ) . On the bases of present survey it is recommended that in future surveies on striplings sample size should be big and besides striplings from other schools ( Urdu medium, Government schools etc ) should be included. Emotional intelligence and optimism can be studied among patients with different diseases to see how these two qualities consequence their recovery rate and how these two consequence their life manners. These graduated tables of emotional intelligence and optimism can be translated in Urdu and validated so can be applied on larger population in Pakistan. The restriction of the present survey is that the sample size ( N=50 ) was smaller and the clip was really limited to carry on a survey that can be generalized to whole Pakistan ‘s pupils.

Columbine Shooting Essay

Columbine high school was built in 1973 on a dirt road off a larger dirt road way out in horse country. It was named after the flower that blankets section of the Rockies. Hardly anybody lived near the school, but soon enough there were about 100,000 new arrivals that filled one continuous suburb with no town center: no main street, no town hall, town library, or town name. Littleton is what they called this quiet suburb where columbine lied several miles west from. Eric and Dylan called it Judgment Day. Monday, April 19th was the day columbine would erupt with an explosion killing hundreds of students and faculty. Eric read instructions to create bombs from the internet called The Anarchist Cookbook. The first step was to plant a bomb near Eric’s house, three miles from the school. That bomb could kill hundreds of people but was intended for only stones and trees. The attack was to begin with a decoy that would rock the neighborhood and divert police. There plan was separated in three acts. The first act would start with a massive explosion by using two bombs in the commons, which would have about six hundred students killed. The bombs would wipe out most of the lunch crowd and set the school ablaze. The bombs would be set out for maximum killing radius and would be planted near two thick columns supporting the second floor which would collapse after exploding. After the explosion, Eric and Dylan would start firing their weapons at whoever they see in sight. Each had a backpack and duffle bag to carry more weapons and explosives. There next step was to have bombs planted in their own cars in the school parking lot near the school exits that would detonate forty five minutes after the initial blast. The cars were placed near the ideal locations for police command, emergency medical staging, and news vans. The maximum body count they were planning on would be: nearly 2,000 students, plus 150 faculty and staff, plus who knows how many police, paramedics, and journalists. The bombs Eric and Dylan planted in the school had failed to explode, but that didn’t stop them from going in and opening fire. They took pipe bombs and threw them wherever they saw a big crowed and opened fire to anyone they saw. They both had trench coats on and Eric discarded his trench coat at the top of the stairs almost as soon as he began shooting. Dylan kept his on until he got to the library. Each costume change created another shooter that would confuse the students and faculty. Nate was a friend of Eric’s and seen something peculiar. He saw Eric walk into the building from the wrong parking lot at the wrong time, when he should have been walking out. Nate figured Eric and Dylan were up to something since he knew they had both been missing that morning. At this point students were running for their lives and finding classrooms they could hide in. no one really knew who the shooters were and didn’t know why they were doing such an attack. Even though Eric and Dylan were shooting whoever they find in sight, they were mainly looking for people with white hats on. People who wore the white hats at school were the jocks. Eric and Dylan had committed suicide once they saw empty halls and when the school looked abandoned. Before they shot themselves, the officers had discovered files on the boys. The cops had twelve pages from Eric’s website, spewing hate and threatening to kill. Dylan Bennet Klebold was born brilliant. He started school a year early, and by third grade he was enrolled in the CHIPS program which stood for Challenging High Intellectual Potential Students. Even among the brains, Dylan stood out as math prodigy. Tom and Sue were Dylan’s parents. His father couldn’t see his boy as the killer, saying â€Å"this was not my son. † Dylan’s service was done quietly with just fifteen people including, friends, family and clergy. The Klebolds were afraid to bury Dylan because his grave would be defaced. It would become and anit-shrine, so they cremated his body and kept the ashes in the house. Eric Dutro was evolving inside and the changes began to show in his sophomore year. Social status was important to Eric as he always made friends. People described Eric as nice, polite, preppy and a dork, but in sophomore year, he tried an edgier look with combat boots and all black outfits. He was breaking out of his shell and grew boisterous, moody, and aggressive. Eric was neither normal nor insane, he was a psychopath. He killed for two reasons: to demonstrate his superiority and to enjoy it. â€Å"Psychopaths are distinguished by two characteristics. The first is a ruthless disregard for others: they will defraud, maim, or kill for the most trivial personal gain. The second is an astonishing gift for disguising the first. It’s the deception that makes them so dangerous. You never see him coming (it’s usually a him – more than 80 percent are male. ) Don’t look for the oddball creeping you out. Psychopaths don’t act like Hannibal Lecter or Norman Bates. They come off like Hugh Grant, in his most adorable role. † (Cullen, 240) Psychopaths take great personal pride in their deceptions and extract tremendous joy from them. Lies become the psychopath’s occupation. The truth does work, but they lie for fun. I have read stories about columbine before but reading this book has really enlightened me on such details that actually happened in this event. I didn’t know that there were bombs involved in this massacre until I read the book. Columbine was organized and well planned by high school students. Eric and Dylan planned this for nearly a year and half so they knew what they were doing. They made home video tapes saying their good-byes to their parents and apologizing to them about the trouble the columbine shooting might cause them. So they knew at some point they were going to either be killed or commit suicide. This impacted me because as it said in the book, the people who do these devastating events can be friends of mine and I wouldn’t even know it. They are people who act good to the public eye, but also have hidden secrets behind closed doors. I can’t imagine someone that is close to me going through this kind of tragedy. The question that was brought to mind was: why would someone do this? Why would two kids want to kill hundreds of people? What was the reason? Was it video games? Was it depression? Was it because they were being bullied and wanted payback? Was it because they were psychotic? I believe they had all of these problems. They were psychotic, Eric did have depression and was taking depression pills for it, and they might have been aiming for jocks because they were bullied by them.

Is Mankind Harming the Environment? Essay

This paper will discuss whether mankind has played a role in harming the environment. It will talk in detail about the various human activities that have had an impact on our natural habitat and will also give specific examples of what we should expect in the future as a result of our activities and how we should deal with them. Mankind has several natural resources at his disposal. These include the oceans, atmosphere, forests etc. Any misuse or overuse of these resources will eventually destroy the sustainability of these resources. The fish population may become extinct, climate changes may result in an increase in natural disasters, forests may not be replaceable etc. In short, abuse or improper use of the environmental resources may result in long term consequences for the entire mankind. (Ostrom, Elinor et al: 2002) There is significant evidence to prove that mankind has indeed played a major role in harming the environment. Most the earth’s fisheries have already been destroyed and the Amazon rain forest is also near destruction. â€Å"Humans have destroyed more than 30 per cent of the natural world since 1970 with serious depletion of the forest, freshwater and marine systems on which life depend. † (Guardian: 1998) This combined with the persistent increase in greenhouse gas emissions have resulted in a massive increase in ozone layer depletion and global warming. This in turn has resulted in climate change all over the world causing an increase in the frequency of floods, droughts, hurricanes, extremities of weather, coastal erosion, melting glaciers etc. No doubt global warming is the result of man’s own activities. Human activities which produce increasing amounts of greenhouse gases especially carbon dioxide from burning fossil fuel are causing global warming all across the world. Global warming has even caused the sea level to rise between four and eight inches during the last hundred years and every year seal level now rises one tenth of an inch. If mankind continues to emit greenhouse gases at the same rate it will result in serious environmental degradation as well as negative effects on human health. (Mank, Bradford: 2005) As Athanasiou and Baer put it, â€Å"Even if we move quickly to cap the emission of greenhouse pollutants [a politically and diplomatically impossible scenario at present], the consequences of global warming will soon become quite severe, and even murderous, particularly for the poor and the vulnerable. And in the more likely case where we move slowly, the impacts will verge on catastrophic. † Maximum contribution towards environmental degradation comes from industrialized countries as about one-half of all greenhouse gas emissions come from these regions. For example the United States produces about one quarter of the world’s greenhouse gases. (Harris, Paul: 2003) Climatologists suggest that average temperatures globally are expected to increase between three and ten degrees Fahrenheit by the next century. They also predict that climate change will also cause new problems because of a persistent degradation of our ecosystem. Rising sea levels, severe natural disasters such as hurricanes, drought, floods, air pollution, spread of diseases like malaria and cholera and other environmental disasters are all negative consequences of global warming. (Smith, Daniel S. : 2001) Some scientists have even predicted that human activities and increasing greenhouse gases will make the Earth so warm that the inhabitants will be unable to adapt to the changing climate. â€Å"The predicted results of this warming include melting of the polar ice caps, flooding of coastal cities, massive extinction of species, and the deterioration of civilization as we know it. † (Parsons, Michael L. :1995) Increasing globalization and man’s desire to accumulate more and more profit has also played a major role in harming the environment. Increased use of energy has resulted in a widespread increase in greenhouse gas emission from fossil fuel use and this has resulted in an increase in global warming. If humans don’t take any action, global warming will continue to increase. â€Å"The Environmental Protection Agency estimates that basic changes in personal consumption, mostly in the realms of electricity use, climate control, and transportation, can reduce the average American’s carbon emissions by roughly one-third, from 15,000 to 10,000 pounds per year. Further reductions can be achieved through changing consumption patterns of food and consumer goods, neither of which is included in those calculations. If combined with more efficient technology, this sort of realignment of priorities would substantially reduce the threat of global warming, as well as variety of other environmental problems. † (Smith, Daniel S. : 2001) Mankind’s level of water consumption is also constantly on the rise and it is predicted that water shortage may become mankind’s biggest problem in the twenty first century. It is estimated that up two thirds of the world’s countries will face moderate to high water shortages by 2025. This accompanied with increasing air, water and waste pollution due to extensive industrial development has further deteriorated our environment. Greater use of fossil fuel and biomass burning and land clearing have led to a increase in nitrogen that has in turn, diminished the absorptive capacity of natural system. While the above evidence demonstrates mankind’s contribution to environmental deterioration, there are supporters who insist that man has played such a negative role. They feel that there hasn’t been such a major impact on the environment to begin with and that the consequences have been exaggerated to a large extent. Those who support globalization and deny its negative impact on the environment feel that economic progress is closely linked to environmental performance but in a positive manner. They feel that it is in fact economic prosperity that may lead to a cleaner environment. The logic behind this argument is that by adopting new and improved technologies, industries will have a less harmful impact on the environment and economic progress would enable countries to bring changes into their mode of operation and save the environment from harm. (John, Detlef). On the other hand a report by by the Working Group on Development and Environment in the Americas (U.S, Mexico, Brazil, Argentina, Chile, Costa Rica and El-Salvador) shows that industrial development and globalization has caused severe damage to the environment and highlights that the Americas now have growing problems with air, soil and water contamination as a result of globalization, urbanization and modernization. (Schalatek, Liane: 2004) Human activities have destroyed our natural habitat, have resulted in accelerating global warming and have contributed to air and water pollution. The amount of greenhouse gases being emitted today is sufficient to cause considerable damage to the environment. The ozone layer is being depleted continuously, a number of pesticides and other organic pollutants have been spread globally endangering hormonal balances and the immune system in man and animals. Increasing dependence on natural resources has resulted in a rapid depletion of tropical forests and fisheries. Many regions are facing problems of water shortage, resource depletion, climate change; risks from biological agents etc. (Dahl, Lynn: 1998) There has been a decline in plants, animals, insects and birds. According to the UN, the current extinction rate is up to 1000 times faster than in the past. It is estimated that around 844 animals and plants have disappeared in the last 500 years. â€Å"The global demand for biological resources now exceeds the planet’s capacity to renew them by 20%†. (Adam, David: 2006).

Applying theoretical ethics to applied ethics Essay

Applying theoretical ethics to applied ethics - Essay Example Passive euthanasia is assisting the patient to die with non provision of treatment or life sustaining procedures to save the patient’s life. The permissibility of each however is bombarded with many controversies making proponents of each view provide intelligent arguments and examples to indicate their point. Generally, the argument lies on the morality of active and passive euthanasia. Rachel claims that active and passive euthanasia has no moral difference and that both should be accepted with equal treatment. A different view holds that the morality of euthanasia depends on what the person cares about. This paper is going to argue that the stand of Rachel on active and passive euthanasia uses only hypothetical imperatives. Hypothetical is defined by Foot as â€Å"acts which are good only as a means to something else†. The paper has the following structures. Part 1 is going to explicate Rachel’s argument on active and passive euthanasia. Part 2 will present my arguments using the idea of Foot that the morality of active killing and passive omission is situated on what a person cares about. Part 1 Rachel claim there is no moral difference between active and passive euthanasia. The morality depends on how people view active killing and passive omission of duty. ... Most people look at active killing as more evil owing to the reason that the cause of death would be the action of the physician. On the contrary, if the medical team refrains from resuscitating a terminally ill patient in a situation where she/he is in cardiac arrest, it is acceptable because it is inculcated in the mind of many that it is the right thing to do. Passive method is not considered evil since the cause of death would be the illness itself although there is a deliberate withholding of foods and treatments. The ultimate result of withholding treatment is not directly seen and connected with death making passive euthanasia acceptable to most people. Another factor influencing the view of people on active killing and passive omission is how death is conceptualized by many. In most part of the globe, death is considered bad or evil since a love one is expected to die. The painful separation from that person and the unacceptable truth that death is inevitable makes death evil and people who cause it goes with that concept. If the doctors caused the death through injection, he is considered evil. Letting die on the other hand is viewed as natural death regardless of the intentional omission of a duty to care, feed, comfort, and most especially to treat the sick. Rachel is clear in maintaining his point that there is no difference in the morality between active and passive methods even in situations where the physician simply does not act. It was pointed out that omission of duty does not mean lesser evil more so that it does not justify the end. Omission of the act has the same ultimate goal with that of active killing. The difference is situated in how the act is done. For instance,

An article on the Consitution of The US Essay Example | Topics and Well Written Essays - 1500 words

An article on the Consitution of The US - Essay Example ted States are entitled within restraint of the law and are still in use today as much as they had ever been, with the first ten articles being known as the Bill of Rights. Although every state had something to gain from the signing of the Constitution, it was Pennsylvania that had much to strive for by the new laws written in the document, such as more freedom and more rights that they could benefit from, as well as having the honor of being the location decided upon for the convention to take place. When it comes to politics, many people find it hard to become excited, yet by becoming the home of such an important event and document, the people of Pennsylvania quickly felt like they were truly Americans. Of the thirty-nine delegates to sign the Constitution, eight of them came from and represented Pennsylvania: Benjamin Franklin, Thomas Mifflin, Robert Morris, George Clymer, Thomas Fitzsimons, Jered Ingersoll, James Wilson, and Gouverneur Morris (Webster, 2010). All of these Pennsylvanian men are also considered to be among the Founding Fathers of the United States as they were behind some of the more drastic changes that the nation has ever seen, including the signing of the documents that would change the laws and freedoms in which a United States citizen was entitled to, as well as presidencies and highly looked upon government careers. All of these men had strong political backgrounds and experiences with working for law-driven changes, which gave them the knowledge that they needed to adopt the laws and articles in the Constitution. As political figures, they knew what citizens required to live free, fulfilling lives, as well as what legal issues needed to be addressed, such as what rights citizens were entitled to and what rights needed to be altered in accordance to the demands of the citizens and the needs of the time, like gun laws and criminal rights laws. It had been readily agreed upon that the people that should be in charge of creating such laws

Choose one of the following and write a two-three paragraph post Essay

Choose one of the following and write a two-three paragraph post - Essay Example The main point is that men have been forced, in the past at least, to conform to a very limiting stereotype and they have been ridiculed if they dare to step outside of this narrow concept. By defining the word with a perspective of looking back in time, I would hope to encourage people to think about a different approach for the present and the future. Robert Jensen’s technical definition of masculinity is certain psychological or social traits that inherently come with being biologically male and he summarizes this in a more informal form with the phrase the tough guy. The negative aspects of this definition are quite clear to Jensen, and he describes the â€Å"toxic† effects which prevailing ideas of masculinity have on men today. Jensen stresses the cultural values attached to gender divisions, and advises that we do not need the extremes of masculinity and femininity any more, and we should concentrate instead on humanity, which can be shared by people of any gender. I think this is quite unrealistic and that masculinity as a concept is likely to last for a very long time. Rather than banning the use of the term, I would rather see it transformed with new and more positive

Tort law Essay Example | Topics and Well Written Essays - 2000 words - 2

Tort law - Essay Example The element of forseeability means that a reasonable person in the circumstances would have been able to anticipate that such damages could arise. In the case of Shoddy Contractors, they are professionals who are in the business of setting up light fixtures, therefore they would be expected to be reasonable conversant with the necessary procedures for doing so and dangers that could arise out of negligence. Therefore the element of foreseeability may be established in this case, since damages were likely to occur through negligent drilling of electrical wires, therefore workers should have been more careful. Secondly, the relationship of the parties may also be established in this case. While a duty of care may not arise or be owed to a particular claimant if that claimant was unforseeable2 in this case, Shoddy Contractors in installing street lights outside Maggie’s building owed a duty of care and had a relationship with all the clients in the building to whom it was providing a service. In some cases, a duty of care has not been imposed when it could have led to unduly defensive practices adopted by defendants to the extent of interfering with their performance of a public duty, for example in the case of Hill v CC of West Yorkshire.3 While in this case also, a public duty is being performed by Shoddy Contractors, nevertheless they would be expected to take minimum precautions in drilling through electrical wires and the event that occurred may be held violative of the duty of care. The actions of Shoddy Contractors in drilling through an electrical wire would qualify as a negligent act that occurred through the failure to take reasonable precautions. For example, in the case of Barrett v Ministry of Defence4 it was held that when a person undertakes to perform a task, he also assumed the duty to carry it out

Black Film History Essay Example | Topics and Well Written Essays - 1500 words

Black Film History - Essay Example The two main directors of the film are Charles Stone and Chuck Wilson. The actors include several various individuals, all which are divided into each segment. The idea of â€Å"Afrocentricity† is to depict the several ways of life that those in the African – American community are associated with. The directors move a step beyond this in showing how the ideas, imagination and the perspectives in this community fall back into problems with stereotypes; however, when looking at the films, there is not a true representation of what this is inclusive of. The strength of this overall film comes from the ideal presented about the diversity of the African – American community. The presentation of seven short films, all which are not related to the other, provides a different level of insight about the African – American community. This breaks down boundaries and stereotypes which are often in the media and gives a fresh look about the ideals of the African Ameri can community. Each of the short films is depicted in an artistic and valuable way to ensure that this message is given. The tension is created in each film, specifically by defining the problems which are associated with society, as well as how individuals have to learn how to overcome this. The weakness of the film comes from the misleading presentations which may distract an individual from buying the film. The title of Afrocentricity is one which isn’t realistic and doesn’t provide the correct depiction of what is presented throughout the film. The concept of diversity is a hidden message that is displayed through each of the films. If one doesn’t understand that this is several short films, one which only lasts for two minutes, then more problems may arise. However, this can work in favor of the film if one is able to understand and overcome stereotypes which may have been associated with the value of each story. Overall rating: 4 Breakdown Breakdown is the first short film that is able to give insight into the African – American community. The director of the film is Jeff Byrd. The actors include the lead, Vanessa Williams. The presentation in this film begins with showing a shooting at a bus station. Vanessa Williams is the only survivor of this incident. When moving through the film, Williams tells about the experience of the shoot down and recalls the trauma which she has gone through by being in this location and seeing what has happened in the specific situation. The strength of this plot is based on the ability for Williams to show the other side of the shootings. The stereotypes which are often depicted in the media are based on the side of African – Americans as having a gangster mentality and not basing their beliefs outside of this. The approach which is taken in this film gains its strength by showing the horror and drama of the shooting as well as the responses which have occurred because of this. The acting that is followed with this is realistic in nature and is able to depict the overall understanding of the complexities which occur in a realistic situation where a shooting occurs, no matter where it happens and who witnesses it. The tension which builds from this realistic viewpoint, as well as the resolution of learning from the trauma becomes the main

Critical Thinking Assignment Essay Example | Topics and Well Written Essays - 1250 words

Critical Thinking Assignment - Essay Example The essay is quite effective as it explores two sides of the coin when approaching a possible avenue of happiness that can be chosen by an individual. By doing this, one side is explored to show how much an avenue can bring happiness while at the same time pointing out how much that avenue can backfire. The argument brought forward talks of the possibility that an aspect of devotion is what brings the said happiness. Just look out for the devotion that guarantees happiness and not the ones that can bring you short-lived happiness. The essay talks of possible experiments carried out to quantify the discussion carried out on matters of happiness as well as how it can be achieved and retained to take as much possible time as possible. The experiments hope to assist individuals make informed guesses on where happiness lies. This report makes a conclusion that the arguments brought forward in this essay are valid for the sake of pursuit of happiness. It tends to bring a worthy argument on what brings about happiness. The speech stherefore talks about detailed and experimented ways to facilitate happiness. The argument is of possible high quality since experimentation and empirical research methods were used to quantify findings and to boost the trust that the audience can have on the speech for its credibility. It is however worth noting that the essay only explored fewer causes of happiness. Happiness, to different people, entails different aspects. An individual may find happiness in music and can always resort to it when feeling sad.

Life of Baruch Spinoza Assignment Example | Topics and Well Written Essays - 250 words

Life of Baruch Spinoza - Assignment Example His perspective that everything that exists results from God characterizes Spinoza’s works. He claims that God’s qualities are infinite, and humanity can only perceive thought and extension. Such a perception rules humanity in the sense that the thought of God goes beyond what is visible. Such a perception of ethics led him to put his works in writing titled â€Å"The Ethics.† As such, Spinoza believed that ethics can result from the belief that â€Å"God or nature† defines everything (Spinoza, & Morgan, 2006). He summarized his works with the assertion that the knowledge of God is the greatest good as it eliminates fear, oppression from desires, and results in blessings. Despite all his philosophical works, Spinoza earned a living from grinding lenses. He lived a humble life residing at The Hague. In 1677, Spinoza suffered from lung illness attributable to inhaling fine glass dust. He died later on before turning 45. His works remain valid through the years due to his recognition of the link between God and nature (Spinoza, & Morgan,

Government Regulation of Abortion Essay Example | Topics and Well Written Essays - 1250 words

Government Regulation of Abortion - Essay Example When the question of rights is brought up, there are always points and counterpoints flung across the table. Rights have become the epitome of our existence on one hand and also the topic of many a coffee table conversation on the other. Besides, if one claims the right to exist, one wonders if the corollary is thought of - how would one exist Perhaps, another very compelling question would be the fact that a mother has to bring forth a life and ensure its sustainability. Therefore, the question of abortion has to be viewed not just from the point of the unborn infant, but also from the viewpoint of the mother and others associated with the newborn. A discussion on abortion and its relevance in American society would be incomplete without a reference to Roe v. Wade, the all-important case that gave all pro-choice supporters a boost. The United States Supreme Court upheld the view that a mother could abort her fetus up to a "point at which the fetus becomes 'viable'" (410 U.S. 113, 1973). Here the court described 'viability' at around 24 weeks of pregnancy. Apart from this, the court also mentioned that the mother could choose to abort a fetus, if she had reason to believe that her physical health was in jeopardy. This landmark decision has led to heated debates and not much of an end in sight. " the Issue Legalized abortion has become the most hashed-over political and theological debate in a nation devoted to debates." (Baird & Rosenbaum, 2001). Political & religious thoughts on abortion: It is difficult to isolate politics from religion. The two are so closely intertwined that very often what is a political statement, might sound like a deeply religious one. There is a very fine line that can be drawn between religion and politics and it is a commonly accepted fact that this has been the position from time immemorial. Though abortions have been legalized in most states in the US, there are constant dissensions on the issue that flare up into major verbal as well as physical clashes. It would be relevant to mention here that political parties have always had to face the questions raised by pro-life as well as pro-choice voters as part of their political campaigns. As an election issue, it is just as important as the amount of federal money that is being spent on the defence services and probably more so when an election is imminent, as the situation right now is. When the subject of discussion and debate is a contentious one like abortion, political parties try to project a very unified view; however, their credibility on their stance is always at stake. It is commonly believed that Republicans are pro-life and would like to see Roe v. Wade relegated to the back pages of legal history. John McCain, for instance, has been a consistent pro-lifer since 1984. (Head, 2008). The Democrat viewpoint is generally one of pro-choice. However, a recent report on the views of Barack Obama on the issue recounts his commitment to take constructive measures to reduce the number of abortions in the country (Chicago Tribune, 2008). This seemingly near-pro-life attitude has led to the formation of a Catholic group that believes that voting for a supposedly pro-choice

Windeby Girl Essay Example for Free

Windeby Girl Essay The body was found in 1952 in an estate called Windeby in Northern Germany. It was discovered when the owners decided to cut the peat to sell for fuel. During the process, the body of a 14 year old girl was found, however at that time, the machinery had already caused some damage to the body. It severed a leg, a foot and a hand. Work was then immediately stopped to investigate the find. State in which the body was found When the body was first found, parts such as the hand and hair were very well preserved by the bog. Her brain was said to have retained its size and shape. The chest had, at the time, decayed and the ribs were visible. The hair had been shaved on one side and there was a blindfold over her eyes. There was a leather collar around the body’s neck, and due to the long hair and small frame, it was instantly assumed to be a girl. Why did she die? There are different theories as to why Windeby died. The first interpretation when the body was found was that she was killed as punishment for adultery. Her head was shaved, led out naked with a cloth covering her eyes and leather collar around her neck then drowned in the bog. Another body was found about five metres from Windeby Girl, it was that of a man, and at the time was said to be her partner in the acts. However, this was later unproven as further investigation was done on the bodies. Carbon dating showed that Windeby Girl died during the first century AD, whereas her supposed partner lived three centuries earlier. Due to the fact that there were no signs of trauma or struggle according the evidence on the body, ideas that this may have been a sacrificial ritual were proposed. Later Investigation: Windeby Girl is a Boy In 1952, when Windeby Girl was first found, the discoverers assumed that she was girl due to the long hair and small frame. In 1970, Heather Gill-Robinson, a biological anthropologist, examined the body’s skeleton and proposed that the body could in fact be a boy. More than 30 years later, in 2007, a DNA testing was done ad a professor from North Dakota State University proved that the body was indeed male. The DNA and bone testing also showed that the boy may have been malnourished and was often sick during his life. This lead to the theory that the boy may have simply died due to natural causes and the blindfold was there to â€Å"protect the living from the gaze of the dead† or may have merely been a band to hold back his hair and slipped down due to shrinkage of the body. His half bald head maybe have also been due to careless excavation or natural causes such as decay over time.

Specialty Cheese Company :: essays research papers

Specialty Cheese Company   Ã‚  Ã‚  Ã‚  Ã‚  The Specialty Cheese Company is a dynamic, small company that has thought about its future. The company has been around since 1839. It has survived when there were over 4000 cheese companies, The Great Depression and over 150 years of leadership. With less than 150 cheese companies in the United States, the Specialty Cheese Company has three United States Department of Agriculture approved functioning companies.   Ã‚  Ã‚  Ã‚  Ã‚  Starting out with over approximately 60 people, the Specialty Cheese has increased its cheese making capabilities and has doubled in employee size within the last five years. The Company is made of skilled and certified cheese makers. Since the company is stationed in Wisconsin, it has at least one major advantage over some of its competition that are in other states. The company receives its milk daily from over 60 local dairy farmers verses importing it from across the state or elsewhere. The money that is saved from shipping costs on milk seems to be reinvested back into the company. They have established a great reputation by winning awards for their products. They take pride in producing new varieties of cheese, producing ethnic traditions from around the world, and improving the quality of their existing cheeses.   Ã‚  Ã‚  Ã‚  Ã‚  Even though only one percent of their sales come from the Internet, Specialty Cheese is not going to miss out on any opportunity to sale its cheese. They have a professional Webmaster handling their website. The website is a marketing tool of today and the future. It provides free recipes, information on the company, the ability to place online orders, foodservice distributors, retail stores, frequently asked question and much more. Having a professional Webmaster on staff helps market their cheese to customers that the company might miss. The dynamics of the web pages are easy to navigate, clear, concise, and appealing.   Ã‚  Ã‚  Ã‚  Ã‚  Paul Scharrman who owns the Specialty Cheese Company monitors, the market place and conducts competitive intelligence. He builds profiles consisting of facts and intuition over long periods of time. These profiles of the competition are gathered at trade shows, talking to customers, and visiting popular outlets. After studying the profiles, the Specialty Cheese can decide on what type of strategy it will take to stay ahead of the competition. Scharman must reevaluate his company often because of the unpredictability of the market place and trends. Specialty Cheese Company :: essays research papers Specialty Cheese Company   Ã‚  Ã‚  Ã‚  Ã‚  The Specialty Cheese Company is a dynamic, small company that has thought about its future. The company has been around since 1839. It has survived when there were over 4000 cheese companies, The Great Depression and over 150 years of leadership. With less than 150 cheese companies in the United States, the Specialty Cheese Company has three United States Department of Agriculture approved functioning companies.   Ã‚  Ã‚  Ã‚  Ã‚  Starting out with over approximately 60 people, the Specialty Cheese has increased its cheese making capabilities and has doubled in employee size within the last five years. The Company is made of skilled and certified cheese makers. Since the company is stationed in Wisconsin, it has at least one major advantage over some of its competition that are in other states. The company receives its milk daily from over 60 local dairy farmers verses importing it from across the state or elsewhere. The money that is saved from shipping costs on milk seems to be reinvested back into the company. They have established a great reputation by winning awards for their products. They take pride in producing new varieties of cheese, producing ethnic traditions from around the world, and improving the quality of their existing cheeses.   Ã‚  Ã‚  Ã‚  Ã‚  Even though only one percent of their sales come from the Internet, Specialty Cheese is not going to miss out on any opportunity to sale its cheese. They have a professional Webmaster handling their website. The website is a marketing tool of today and the future. It provides free recipes, information on the company, the ability to place online orders, foodservice distributors, retail stores, frequently asked question and much more. Having a professional Webmaster on staff helps market their cheese to customers that the company might miss. The dynamics of the web pages are easy to navigate, clear, concise, and appealing.   Ã‚  Ã‚  Ã‚  Ã‚  Paul Scharrman who owns the Specialty Cheese Company monitors, the market place and conducts competitive intelligence. He builds profiles consisting of facts and intuition over long periods of time. These profiles of the competition are gathered at trade shows, talking to customers, and visiting popular outlets. After studying the profiles, the Specialty Cheese can decide on what type of strategy it will take to stay ahead of the competition. Scharman must reevaluate his company often because of the unpredictability of the market place and trends.

Eye Ball :: Literary Analysis, Spiegelman

What would you expect to be the mindset of a misfit kid who isn’t really that popular who is playing baseball with the other kids because he wants to fit in with them instead of being himself? There is such a boy in a first person short story that was written by a worldly-renowned author. In â€Å"Eye Ball,† Spiegelman uses characterization to develop the theme of be yourself and don’t try to fit in with others at the expense of showing your true self. Spiegelman’s use of the little misfit boy as a round character reflects the theme because he realizes that he doesn’t fit in so well with all the other boys. Being a kid with Amblyopia, or â€Å"lazy eye†, he already knew that he was at a disadvantage and he points out his condition when he is saying â€Å"since I’m virtually blind in my left eye† and when he said â€Å"Amblyopia, a â€Å"lazy eye,† made my whole world 2D† (130). He still tries to play baseball with the other boys, but he quickly finds out that he isn’t that good at it. Identification can be made with the out-of-place feeling that the little boy most have felt. Now he is most likely feeling down because he did poorly when he was up at bat. Most out of place people â€Å"must escape into fantasy and/or develop a rarefied sense of humor to survive† (130). The usual â€Å"boy in 1950s America, baseball was not optional and to be inept assured a place in the social hierarchy even lower than a girl’s† (130). This shows that there was a current stereotype of how little boys should be and he tried to be stereotypical with all of the other little boys. Spiegelman’s use of the little misfit boy as a dynamic character reflects the theme because he learns to be himself and not try to be something that he isn’t. He realizes that he is out of place when the boys placed him and he â€Å"was inevitably relegated to right field, far out of harm’s way† (130). While in the outfield he thought that his boredom took out his â€Å"anxiety that a ball might come† (130). He already knew before he went with the boys, that playing baseball with them wasn’t going to go smooth so he â€Å"often kept some comic book handy† (130). While he is thinking, he finally realizes that his true comfort is in comics and not sports.

Alice Walkers The Color Purple: Celies Struggles Expressed in Letter

Alice Walker's The Color Purple: Celie's Struggles Expressed in Letters "Dear God, Gets me out of here. I needs to love and laugh. I needs to be free of this bastard and these white people." At a very young age, Celie begins writing letters to God. In her letters she explains her fears about her stepfather raping her, her mother and sister being beat, and her fears for her sister, Nettie. This epistolary novel (a novel in which the narrative is carried forward by letters) takes place during the early twentieth century, where slavery still existed in the South, and black people lived discriminating lives. Even though many black Southerners formed tight-knit communities, physical, mental and sexual abuse was still brought on to many of the black women living in the frame of male civilization. In The Color Purple (1983), Alice Walker portrays these harsh realities and struggles through the letters of a young woman named Celie. Celie turns to God after her father says, "You better not never tell nobody but God. It'd kill your mammy" (1). This passage was used by Celie and... Alice Walker's The Color Purple: Celie's Struggles Expressed in Letter Alice Walker's The Color Purple: Celie's Struggles Expressed in Letters "Dear God, Gets me out of here. I needs to love and laugh. I needs to be free of this bastard and these white people." At a very young age, Celie begins writing letters to God. In her letters she explains her fears about her stepfather raping her, her mother and sister being beat, and her fears for her sister, Nettie. This epistolary novel (a novel in which the narrative is carried forward by letters) takes place during the early twentieth century, where slavery still existed in the South, and black people lived discriminating lives. Even though many black Southerners formed tight-knit communities, physical, mental and sexual abuse was still brought on to many of the black women living in the frame of male civilization. In The Color Purple (1983), Alice Walker portrays these harsh realities and struggles through the letters of a young woman named Celie. Celie turns to God after her father says, "You better not never tell nobody but God. It'd kill your mammy" (1). This passage was used by Celie and...

Diagram of Generic Academic Performance Monitoring System Essay

Figure 2.0: Context Diagram of Generic Academic Performance Monitoring System The figure 2.0 represents the two (2) users of the Generic Academic Performance Monitoring System namely the Administrator and the Professor. The Administrator entity shows the capability to access the system; manage account by modifying account’s profile; managing member’s account such as creating new user profile and updating user profile; importing student list; creation of grade criteria; generating students grade report and updating website contents. The Professor entity shows the capability on accessing the system; managing account profile; importing student list; defining grade template for grading computation and generating student’s grade. Figure 3.0: First Entry Level Data Flow Diagram of Administrator’s Capabilities The figure 3.0 represents the First Entry Level Data Flow Diagram of the Administrator upon successfully logging-in into the Generic Academic Performance Monitoring System. He/she has the capabilities to manage modules such as handling member’s account, importing students list, creation of grade criteria, grade computation and updating website contents Figure 3.1: Second Entry Level Data Flow Diagram on Managing Account for Administrator The figure 3.1 shows the Second Entry Level Data Flow Diagram of the Administrator on managing members account wherein he/she has the capability to create account’s profile for new professor or associate. He/she also capable on updating existing member account. Figure 3.2: Second Entry Level Data Flow Diagram on Import Student List, Create Criteria, Grading and Website Modules for Administrator Figure 3.2 shows the continuation of the Second Entry Level Data Flow Diagram of the Administrator. Upon successfully accessing the system, he/she has the capability to import students list and create criteria template to be use for the student’s grade computations. The Administrator also has the  capibility to change or update website contents from client’s discretion. Figure 4.0: First Entry Level Data Flow Diagram for Professor’s Capabilities In the Figure 4.0 shown above, it represents the First Entry Level Data Flow Diagram of Professor in the Generic Academic Performance Monitoring System. Same with the Administrator user, the Professor also have the capabilities to update own account profile, import student lists and generate student’s grade summary. Figure 4.1: Second Entry Level Data Flow Diagram on Managing Account, Import Student Lists and Compute Grade Modules for Professor Figure 4.1 shown above presents the Second Entry Level Data Flow Diagram of the Professor upon successfully logging-in into the system. Same with the Administrator user, the Professor is also capable on modifying and updating account profile; importing student list; defining grade criteria template and generate grade summary of students.

Comparing Levels of Development Between Japan and Brazil

Comparing Levels of Development between Japan and Brazil Within this assessment, I will cover and compare several factors between the development of Japan and the development of Brazil. Japan is a MEDC, which is a More Economically Developed Country and Brazil is an LEDC, a Less Economically Developed Country. The indicators I am about to compare and expand on include a range of factors, from the likes of Population to Area. First of all, Population. There are around 127. 5 million people living in Japan at the moment, compared to Brazil which has a population of just fewer than 194 million people. Population has a big effect on the development of both countries and in fact the majority of the countries in the world because, if a population increases then there are more people to get involved in industry and manufacture. Therefore, more products can be invented or advanced meaning more will be sold to other countries turning in more money for the countries economy. My second indicator is to do with the Environment, more specifically CO? emissions. In Japan the figure is 9. 8 metric tonnes of Carbon Dioxide per capita or person and in Brazil the current figure stands at around just 1. metric tonnes of CO? per capita. This effects the development of the countries because often the effects of bad environmental factors and cause many people to get ill or even die. If people die, this affects the amount of people in industry. The next indicator is Literacy. In Japan, the adult literacy rate (aged 15 and above) is 99% of the population and the same rate for either male or women. Wher eas in Brazil the rate of adult literacy is 88. 6% of the total population. 88. 4% of males and 88. 8% of females. Literacy is important no matter where you come from and the more people literate in a country the more likely the country is to survive and develop because if people are illiterate, they won’t get very far in industry. For instance, signing contracts or cheques are assets required to survive in industry so literacy is regarded as essential in today’s world. The fourth indicator is Transportation, in particular, airports and ports. Japan has 10 key ports in Chiba, Kawasaki, Kobe, Osaka, Tokyo, Moji, Nagoya, Tomakomai, and Mizushima, Yohohama. Also, Japan has a total of 144 airports. 38% of them with paved runways measuring 0-1500m, 57% of their paved runways measure 1501-3000m and 5% of the runways are 3000m or greater. In Brazil there are 7 key ports: Guaiba, Ilha Grande, Paranagua, Rio Grande, Santos, Sao Sebastiao and Tubarao. With regards to the airports, there are over 23 times the amount of airports in Brazil than there are in Japan. There are 3346 airports. 1642 of these airport’s paved runways are less than 914m, 1617 are 914m to 1523m and 87 are 1524m to 2437m. They are 49%, 48% and 3% respectively. The amounts of airports and ports effects the development of a country to a very large extent as industry is where the majority of a countries income comes from industry and without anywhere to import products there would be near to no industry apart from the industry based in Japan. My fifth indicator is another transport based one. Motor powered vehicles per 1000 people. The figure for Japan is 595 per 1000 people and in Brazil it’s 198 people per 1000 that own motor vehicles 198 people. It’s relatively clear that a motor vehicle is quite an essential aspect of life and without any means of transport then life would be very difficult to make industry and development work. My penultimate indicator is birth rate. The birth rate in Brazil is 16 people per 1000 and in Japan, the figure stands at just 9 births per 1000 people. A birth rate is key to development because it all links in with development and the higher the birth rate, the higher the population, the higher the amount of people helping working in the development of their country whether it be in industry or just the development or life. Finally, my last indicator is infant mortality. In Brazil, the mortality rate 22. 58 deaths per 1000 live births with 26. 16 deaths out of 1000 male live births and 18. 83 deaths out of 1000 female live births. In Japan, the rate is much lower. Their figure is 2. 79 deaths out of 1000 live births and that’s 2. 99 out 1000 male live births and 2. 58 deaths out of 1000 live female births. The large difference in these figures shows that Japan is by far more developed than Brazil as the quality of living conditions in Japan are far better than in Brazil as there is less disease to cause deaths. By Conor Thompson

Chopper Fed Dc Motor

INTRODUCTION During the nineteenth century, when power supply was dc, dc motors were used extensively to draw power direct from the dc source. The motor speed could be varied by adjusting field current by a rheostat. That was an open loop control. Most of the drives were constant speed and the characteristics could not be matched with a job requirement. A vast development in the dc drives system took place when the ward Leonard Control System was introduced in the 1980s. The system was motor-generator system to deliver power to the drive motor. The supply power available was still dc and dc motor was used to drive the dc generator set at a more or less constant speed. Afterwards when the ac power system came into existence and became popular, ac motors were developed and became attractive owing to their constructional simplicity, ruggedness and lower initial as well as maintenance cost. Machine requiring variable speed drives use the ward Leonard System employing ac motors driving dc motors at a constant speed. In the 1950s electronic came into existence and brought about remarkable improvement in the speed control system. The open- loop manual control system was replaced by close loop feedback control, which resulted in improved response and better accuracy. Initially, gas diodes and ignitrons were developed and ac to dc converters were used to control dc motors. The advent of thyristors capable of handling large current has revolutionized the field of electric power control. Thyratrons, ignitrons, mercury arc rectifiers, magnetic amplifiers and motor generator sets have all been replaced by solid state circuits employing semi-conductor diodes and thyristors. Thyristor controlled drives employing both ac and dc motors find wide applications in industry as variable speed drives. In the 1960s ac power was converted into dc power for direct control of drive motors with solid state devices (high power silicon diodes and silicon controlled rectifiers). Initially saturable reactors were employed in conjunction with power silicon rectifiers for dc drives. Of late solid state circuits using semi- conductor diodes and thyristors are becoming popular for controlling the speed of ac and dc otors and are progressively replacing the traditional electric power control circuit based on thyratrons, ignitrons, mercury arc rectifiers, magnetic amplifiers, motor-generator sets, etc as compared to the electric and electro-mechanical systems of speed control. The electronic system has higher accuracy, greater reliability, and quick response and also has higher efficiency as there is no I2R losses and moving parts. Moreover four-quadrant speed control is possi ble to meet precise high standards. All electronic circuits control the speed of the motor by controlling either, ? The voltage applied to the motor armature or ? The field current or ? Both of the above DC motors can be run from dc supply if available or from ac supply, after it has been converted to dc supply with the help of rectifiers which can be either half wave or full wave and either controlled ( by varying the conduction angle of the thyristors used) or uncontrolled. AC motors can be run on the ac supply or from dc supply, after it has been converted into ac supply with the help of inverters (opposite of rectifiers). As stated above, the average output voltage of a thyristors controlled rectifiers by changing its conduction angle and hence the armature voltage can be adjusted to control its speed. When run on a dc supply, the armature dc voltage can be changed with the help of uncontrolled rectifiers (using only diodes and not thyristors). The dc voltages so obtained can be then chopped with the help of a thyristors chopper circuit. In this method of speed control of a dc motor, available ac supply is first rectified into dc supply using uncontrolled rectifiers. The supply is then filtered and smooth ended dc output is supplied to the thyristors chopper. It allows dc to flow through for the time Ton and then disconnects for the time Toff. This cycle is repeated. During supply-on period (i. e. for the time period Ton) the dc motor gets supply and accelerates. During the supply off period Toff (i. e. for the time period Toff) there is no supply to the motor and the motor decelerates till the next on cycle begins. If the cycles repeated continuously at a definite frequency and the elements of the cycle are maintained in a fixed relationship, the motor will then operate at a constant voltage across the motor will be, V0 = (V*Ton)/(Ton +Toff) = (V*Ton)/T = f*V*Ton The dc voltage across the motor can be control by varying the Time Ratio Control (TRC) which may be accomplished by, ? Varying the duration of the on-time, Ton keeping the total time period, T or frequency, f constant ? Keeping the on- time, Ton constant and varying the frequency, f. ? Varying both. The Variable dc voltage below the supply dc voltage is made available to the dc motor and therefore, the motor speed available is below base speed. For automatic control of speed, both current feedback and speed feedback is used. BRIEF DISCUSSION ON CHOPPER A dc chopper is a static device used to obtain variable dc voltage from a source of constant dc voltage. The dc chopper offers great efficiency, faster response, smooth control, lower maintenance, small size, etc. Solid state chopper due to various advantages are widely used in the battery operated vehicles, traction motor control, control of a large number of dc motors from a common dc bus with a considerable improvement of power factor. PRINCIPLE OF CHOPPER OPERATION: A chopper is a thyristors on/ off switch that connects load to and disconnects it from the supply and produces a chopped load voltage from a constant input voltage. The chopper is represented by a thyristors (SCR). It is triggered periodically and is kept conducting for a period Ton and is blocked for a period Toff. During the period Ton, when the chopper is on, the supply terminals is connected to the load terminals. And during the interval Toff when the chopper is off, load current flows from the freewheeling diode Df. So, the load terminals are short circuited by Df and load voltage is therefore zero during Toff. Hence the chopper dc voltage is produced at the load terminals. Now, the average load voltage, Eo is given by Eo = Edc*? [? =Duty Cycle=(Ton/Toff)] Or, Eo = Edc*(Ton/T) [T=Ton + Toff] So the voltage can be varied by varying the duty cycle, ? of the chopper. CLASSIFICATION OF CHOPPER: Power semiconductor devices are used in chopper circuits are uni-directional device. A chopper can however operate in any of the four quadrants by an appropriate arrangement of semiconductor devices. These characteristics of their operation in any of the four quadrants form the basis of their classification as, 1. Type-A or First Quadrant Chopper 2. Type-B or Second Quadrant Chopper. 3. Type-C or Two Quadrant Type-A Chopper 4. Type-D or Two Quadrant or Type-B Chopper 5. Type-E or Four Quadrant Chopper. PERFORMANCE EQUATION OF DC MOTORS The equivalent circuit and on its basis the performance equation of a separately-excited dc Motor and series dc motor are presented below. ? Separately-excited dc motor: The equivalent circuit of a separately-excited dc motor coupled with a load under steady state condition is shown in the fig 4. 1. The load torque, TL opposes the electro-magnetic torque, Te. For the field circuit, Vf = If*rf For the armature circuit, Vt = Ia + Ia*ra Motor back emf or armature emf, Ea=Ka ? Ia=Km? m ————– (4. 1) Te=ka ? Ia = KmIa Also, Te = D wm + TL where, rf=Field circuit resistance in ohm, Ia=Armature current in A, Vt=Motor terminal voltage in V, ra=Armature circuit resistance in ohm, Km=Ka ?=Torque constant in Nm/A*emf constant in V-sec/rad, m=Angular speed of motor in rad/sec, D=Viscous friction constant in Nm-sec/rad. Electromagnetic power, P=wmTe watts From equation (1), Ea=Kmwm=Vt-Iara Or wm= (Vt – Iara)/Km= (Vt – Iara)/Ka ? ——————– (4. 1) So it is seen from equation (4. 2) that speed can be controlled by varying, ? Armature terminal voltage, Vt : This method is k nown as Armature-voltage control. Speed below base speed is obtained by this method. ? Field flux, ? : This method is known as Field flux control. Speed above base speed is obtained by this method. ? DC Series Motor: In a dc series motor, field winding is in series with the armature circuit. It is designed to carry the rated armature current. The fig. shows the equivalent circuit of a dc series motor driving load with load torque, TL. For the armature circuit, Vt = Ea + Ia ( ra+ rs ) †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. (4. 3) Te = Ka ? Ia For no saturation in the magnetic circuit, ? = CIa Hence, Te = KaCIa2 = KIa2 Also, Ea = Ka ? wm = KaCIawm = KIawm From eqn (4. 3), Vt = KIawm + Ia (ra + rs) = Ia [ Kwm + (ra + rs)] Or, speed wm = (Vt/ KIa) – (ra +rs)/K †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. (4. 4) where, rs = Series field resistance in ohm, K = KaC = constant in Nm/A2 or in V-sec/ A- rad. CLOSED LOOP CONTROL OF CHOPPER FED DC MOTOR For practical purposes motors are required to operate at desired speed with low losses to meet the desired load –torque characteristics which depends on the armature current. Suppose a motor is operating at a particular speed an suddenly a load is applied, the speed falls and the motors takes time to come up to the desired speed . but a speed feed back with an inner current loop provides faster response to any disturbance in speed command ,load torque and supply voltage. Another reason for the requirement of feedback loop in dc drives is that, the armature of a large motor represents very small impedance which when supplied with nominal voltage would result in an excessive current of up to 10 times the nominal value. Under normal conditions, this is prevented by the induced armature voltage, E which cancels most of the applied voltage, Va so that only the difference is driving the armature current, Ia. But under transient conditions or steady state over load of the motor, there is always a danger of excessive currents due to sudden torque demand and rapidly changing armature voltage or speed . t is therefore important to provide a fast current or torque limit to protect the motor, the power supply and the load. This is best realized by feedback control establishing an effective safe guard against electrical and mechanical stresses. In it the output of the speed controller, Ec is applied to the current limiter which sets the reference current, Ia (ref erence) for the current loop. the armature current is sensed by a current sensor, after being filtered by an active filter to remove ripples which is then compared with the reference current, Ia (ref. the error current is processed through a current controller whose output, Vc adjusts the firing angle of the chopper and brings the motor speed to the desired value. Any positive speed error caused by an increased in either speed command or load torque demand can produce a high reference current, Ia (ref) the motor accelerates to correct the speed error and finally settles down at any reference current, Ia(ref) which makes the motor torque equal to the load torque resultant in a speed error closed to zero. For any large positive speed error, current limiter saturates and limits the reference currents, Ia (ref) to a maximum value, Ia (max) the speed error is then corrected at the maximum permissible armature current ,Ia(max)until the speed error becomes small and the current limiters comes out of the saturation . normally ,the speed error is corrected with the Ia less than the maximum permissible armature current, Ia max. For speeds below the base speeds, the field error, Ef is large and the field controller saturates thereby applying the maximum ield voltage and current. The speed control from zero to base speed is normally done at the maximum field by armature voltage control. When the speed is closed to the base speed, Va is almost near the rated value and field controller comes out of saturation. The speed control above base speed is generally done by field weakening at the rated armature voltage. In the field control loop, the back emf Eb is compared with a reference voltage , Eb ( ref) the value of which is generally between 0. 85 to 0. 95 of the rated armature voltage. For a speed command above the base speed, the speed error causes a higher value of Va then motor accelerates, back emf , Eb increases and field error, Ef decreases. The field current when decreases and the motor speed continue to increase until it reaches the desired speed. In this mode of operation, the drive responds slowly due to large field time constant. A full converter is generally used in the field because it has the ability to reverse the voltage thereby reducing the field current much faster as compared to the semi converter. MODELING AND OBSERVATIONS ? Modeling using Matlab: ? DC Motor with Load Parameter given: Voltage = 220v Current = 6. 2A Ra = 4 ohm La = 0. 072H Speed = 1470 rpm J = 0. 0607 kg-m2 Kb= 1. 26v/rad/sec Bt =0. 0869N-m/rad/sec Parameters calculated: Ta=La/Ra= 0. 02sec Tm=j/Bt =0. 7sec K1 = Bt/[KB2 + Ra Bt] =0. 0449 -1/T1 – 1/T2 =-1/2[Bt/J +Ra/La] + sqre[1/4(Bi/J + Ra/La)2-{(Kb2 + Ra Bt ) /JLa}] T1 = 0. 1077sec T2 = 0. 0208sec Tm = J/Bt = 0. 7sec DC MotorTransfer function: I(s)/V(s) =[k1(1+sTm)]/ [(1+sT1)(1+sT2)]= [0. 032s+0. 045]/[0. 002s2+0. 4s+1] wm(s)/I(s)= Kb/Bt(1+sTm) =14. 5/(1+0. 75) Converter Transfer function Kr =1. 35V/Vcm =1. 35*230/10 =31. 05V/v Tr = 1/12*Fs = 1/12*50 =0. 00166sec T. F = kr/(1+sTr) =31. 05/(1+0. 00166s) Design of Current Controller Tc=T2=0. 0208sec K = T1/2Tr = 0. 1077/2*0. 00166 = 32. 43 Kc = KTc/k1HCKrTm =32. 43 *0. 0208/0. 0449*1*31. 05*0. 7 =0. 69 Transfer function Gc(s) = Kc(1+sTc)/sTc = 0. 69(1+0. 0208s)/0. 0208s = 0. 69 + 0. 0143s/0. 0208s Current Loop I(s)/I*(s) = Ki/(1+sTi) Ti = T3/1+ kfi Ki = kfi/Hc(1+ kfi) Kfi = KcKrKiTmHc/Tc Kfi = 0. 9*31. 05*0. 0449*0. 7*1/0. 0208 Kfi = 32. 44 Ki = Kfi/HC(1+ Kfi) Kfi = 32. 44/1*(1+32. 44) Kfi = 0. 97 Ti = T3/(1+ Kfi) = T1+Tr/(1+ Kfi) = 0. 1077+0. 00166/1+32. 44 = 0. 0032sec Speed controller Design T4 = Ti + Tw K2 = Ki Kb Hw /Bt Tm K2 = 0. 97*1. 26*1/0. 0869*0. 7 K2 = 20. 092 KS = 1/(2 Kt T4) KS = 1/2*20. 092*0. 0032 KS = 7. 77 Ts = 4T4 =4*0. 0032 Ts = 0. 0128 Transfer function T. F = KS (1+sTS)/sTS = 7. 77(1+0. 0128s)/0. 0128s = (7. 77 + 0. 0994)/0. 0128s ? Modeling using PSIM: Parameters Given: Source (Vdc) = 800V Transistor (npn): Saturation Voltage = 0 Initial Position = 0 Current Flag = 1 Gating Block (G): Frequency = 50Hz Number of Points = 2 Switching Points = [0 180] Diode (D): Diode Voltage Drop = 0 Initial Position = 0 Current Flag = 0 Inductor (L): Inductance = 0. 01 Initial Current = 0A Current Flag = 0 Capacitor (C): Capacitance = 0. 00005F Initial Capacitive Voltage = 0V Current Flag = 0 DC MOTOR (DCM): Ra = 0. 055 ohm La = 0. 01H Rf = 55 ohm Lf = 0. 02H MI = 0. 2 Vt = 440V Ia = 80A If = 4A n = 1500rpm Torque Flag = 0 Master/Slave Flag = 1 Field Source = 400V Speed Sensor (Ws): Gain = 1 Simulation Control: Time Step = 1e-005 Total Time = 0. 02 Print Time = 0 Print Step = 1 Load Flag = 0 Slave Flag = 0 INDUSTRIAL APPLICATIONS DC drives are highly versatile energy conversion devices. It can meet the demand of loads requiring high starting, accelerating and decelerating torques. At the same time dc drives are easily adaptable for wide range of speed control and quick reversal. So, in industrial application where accurate control of speed and / or torque is required chopper controlled dc drives are unrivalled. Therefore, chopper controlled dc motors are universally employed in steel and aluminum mills, power shovels, electric elevators, railway locomotives and large earth moving equipments. Uses o Various Chopper Controlled DC drives with reasons: | | | | |Types of DC drives |Applications |Advantages | | | |Accurate speed control can be done. |Separately Excited dc drives |Used in paper mills, steel rolling |Variation of speed from very high to low value can be| | |mills, diesel-electric propulsion of |done | | |ships, etc. | | | | |Starting torque is very high upto 500%. | | |Maximum momentary operating torque is upto 400%. | | | |Speed regulation is widely variable. It is very high | |Series dc drive |Used in hoists, cranes, conveyors, |at no load. | | |trolley-cars, electric locomotives, |Speed control by series field. | | |etc. | | |Used in lathes, centrifugal pumps, |Starting torque is medium, usually limited to 250% by| |Constant speed dc shunt drive |reciprocating pumps, fans, blo wers, |a starting resistance but may be increased. | | |conveyors, spinning and weaving |Maximum momentary operating torque is usually limited| | |machines, etc. to about 200% by commutation. | | | |Speed regulation is about 5-10 %. | | | |Speed increases about 200% by field control and | | | |decreases by armature voltage control. | | |Starting torque is medium, usually limited to 250% by| | | |a starting resistance but may be increased. | | | |Maximum momentary operating torque is usually limited| |Adjustable speed dc shunt drives |Used for application requiring |to about 200% by commutation. | |adjustable speed control, either | | | |constant torque or constant output. | | SCOPE OF MODIFICATIONS Chopper controlled dc drives are widely used in hoists, cranes, elevators, shears, crushers, conveyor, blending mills, punch presses, air compressors, ice making machines, tractions, etc. So these drives should be modified in the following ways to make them more efficient and accurate, 1. The chopper controlled dc motors should be made with large diameter armatures and large pole size of reduced height. 2. The yoke as well as the main and commutating poles should be well laminated to reduce the eddy current effect and to improve the commutation. 3. Large numbers of commutator bars should be used to reduce the voltage between the commutator segments and to improve the commutation. 4. The commutator should be made larger in order to provide extra insulation to withstand large and rapid voltage fluctuations. 5. Compensating windings should be used in large motors to reduce the armature reactions effects. 6. The current densities used for the armature and Interpol windings should be reduced as compared to the conventional dc motors of the same frame size and rating in order to reduce the effect of heating of armature and Interpol. 7. Low inertia armature should be employed for improving the response. 8. Split brushes of good commutating quality should be used for reducing the effect of transformer voltage in the coil undergoing commutations. 9. Better class of insulation should be used to allow higher temperature rise and dissipation of more losses from a given frame. 10. Now a days chopper controlled dc drives are widely used in the automobile industries. So, it should have high efficiency and accuracy, light weight, low maintenance cost. BIBLIOGRAPHY 1. Electric Drives – Ramakrishnan, Prentice Hall India. 2. Power Electronics – P. S. Bimbhra, Khanna Publishers. 3. Software: MATLAB 6. 5 and PSIM.