John F. Kennedy’s Inaugural Address Essay Example for Free

John F. Kennedy’s Inaugural Address Essay John F. Kennedy’s Inaugural Address The Inaugural Address, by John F. Kennedy is about the people cooperating to make America a better place for everyone. John F. Kennedy’s speech was delivered in the east side of the capitol on January 20, 1961. In John F. Kennedy’s inaugural address, he emphasizes the need for unity among mankind. John F. Kennedy utilizes anaphora to evoke togetherness throughout the world. Throughout his speech, Kennedy repeats, â€Å"we pledge† several times. Kennedy means to convey unity by using â€Å"we† to connect to the people. Because the phrase is repeated so many times it shows how bad he wants the idea grasped in to the peoples minds. By using the word â€Å"pledge† he is able to emphasize the promise that the people made to America. Kennedy also reiterates the phrase, â€Å" we shall† many times. Through the phrase â€Å"we shall† he is able to highlight that everyone is going to help. It makes the people see that they have a part in constructing America, for Kennedy cannot do it on his own. He wants to build a unity where everyone is on the same team; together they will help each other out and strive for the unity of America. Kennedy wants to be on the same side as the people; he constantly say’s â€Å"let both sides† so that he can come into an agreement with them. If Kennedy makes a connection with the people they will do as he says. He wants â€Å"both sides† to collaborate with each other to create a strong nation. If he were able to create a unified nation, the people would live in a civilized manner, all-willing to help. Through anaphora, Kennedy is able to present the theme that together you can conquer all.

Strategies to Improve Health in Glasgow

Strategies to Improve Health in Glasgow Improving the health of the citizens of Glasgow. Health The World Health Organisation (WHO) defines: â€Å"Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.† This definition is unchanged since 1948.[1] Demography of Glasgow According to the 2002 census, Glasgow has a population of nearly 580,000. This is more than 10% of the total population of Scotland that is just over 5 million. The metropolitan area of Glasgow houses about 1.7 million people. It is the largest city in Scotland and 4th largest in the UK. Slightly fewer than 24% of the population of Glasgow are below the age of 20 and slightly more than 15% are aged over 65 with about 7% over 75. This is similar to the rest of Scotland.[2] The ethnic mix is: 96.5% white, 2.5% Asian, 1% Black, Chinese and other ethnic groups.[3] Indices of deprivation were updated in 2007[4] for England but slightly different indices are used for the four home nations of the UK. The Scottish index was produced in 2006.[5] Although there are slight differences in the criteria, eastern Glasgow has the most deprived areas in the whole of the UK. However, Glasgow is a mixed conurbation with many affluent areas too. Health Inequalities The NHS was supposed to remove health inequalities but has failed to do so. The Black Report, commissioned in 1977 and published in 1980 found that little had changed in terms of health inequalities.[6] Sir Donald Acheson’s Report of November 1998 found little evidence of improvement.[7] A seminal paper by Dr Julian Tudor Hart in 1971 coined the inverse care law.[8] â€Å"In areas with most sickness and death, general practitioners have more work, larger lists, less hospital support and inherit more clinically ineffective traditions of consultation than in the healthiest areas; and hospital doctors shoulder heavier case-loads with less staff and equipment, more obsolete buildings and suffer recurrent crises in the availability of beds and replacement staff. These trends can be summed up as the inverse care law: that the availability of good medical care tends to vary inversely with the need of the population served.† Tackling health inequalities is a major component of the Government’s health policy. There are plenty of publications[9] but little evidence of change. Health and life expectancy have improved through all strata of society but the gradient down the social classes remains or has expanded. Some argue that this is a disgrace whilst others say that provided that there is improvement in all sections that this is an achievement. The WHO Commission on the Social Determinants of Health[10] was chaired by Sir Michael Marmot and looked at health inequalities not only in poor nations but also in the rich. It found that children born in the Calton area of Glasgow will live, on average, 28 years less than a person living eight miles awayinLenzie, East Dumbartonshire. There the life expectancy is 82 years compared with 79 for the whole of the UK. A Calton resident has a life expectancy of 54 years. The report said adult death rates were generally 2 ½ times higher in the most deprived parts of the UK than in the most affluent. Throughout the country and through all social classes, women live, on average, five years longer than men.[11] Mortality rates are high in Scotland, higher in Clydeside and even higher in Glasgow. They are especially high in areas of deprivation. Decreases in deaths from coronary heart disease (CHD) have been offset by increases in deaths from liver disease and suicide.[12] The challenge Glasgow is probably the most challenging city in the UK to improve health, if not the most challenging in the European Union (EU). The incidence of CHD and stroke is the highest in Western Europe and most of this is attributable to modifiable risk factors.[13] Rates of cancer are also high. The incidence of lung cancer is 77 per 100,000 in Western Scotland compared with 49 per 100,000 in the rest of the UK and most of this is accounted for by smoking habits.[14] Glasgow has been called â€Å"the UK’s fattest city†[15] Obesity is well known as a risk factor for CHD and diabetes but it also contributes to the risk of many cancers. The WHO says that obesity is second only to smoking as a cause of cancer.[16] If improvement in the health of Glasgow was aimed purely at reducing smoking and obesity it could have a major impact on health. Other areas where there may be significant benefit are a reduction in drug and alcohol abuse and safe sexual practices. Substance abuse and sex are related. Most prostitutes work to fund a drug habit and much injudicious sex occurs when intoxicated by drugs or alcohol. Intravenous drug use and promiscuity spread hepatitis B and HIV. Hepatitis C is very common with intravenous drug use but is less commonly sexually transmitted. Accidents and much violence result from intoxication, especially with alcohol. Between 1960 and 2002, the death rate from cirrhosis in men rose by 69% in England and Wales and 106% in Scotland. Amongst women it rose by nearly half.[17] Improving mental health is also extremely important.[18] It is often linked to substance abuse but it is difficult to decide if mental illness is caused by drug or alcohol abuse or a result of it. People often have more than one risk factor. This is why doctors use tables that examine several parameters to assess an individual’s risk.[19] Those in lower social classes are more likely to have multiple risk factors. For males, 30% in social class V have at least two or three high risk behaviours compared to fewer than 10% in social class I. For females, the figures are 20% and fewer than 5% respectively.[20] Some benefit may be obtained from improved medical services. Governments may help with alleviating poverty and economic regeneration but most intervention will be aimed at getting the individual to take responsibility for his own health. He has to understand the problem. He must want to change. He must be empowered for his own good. There is a vast amount of health promotion material that is readily available.[21] A single agency is limited in what can be achieved. It is important that many agencies and all levels of society should feel part of this great challenge to change the ways and the attitudes of the people of Glasgow. Government action Improving medical services to cope with those who suffer from the important diseases should improve outcome but disease prevention offers hope of a much greater improvement. Most of the risk factors for illness and premature death are modifiable and amenable to change by the individual. Legislation may come from the EU, UK or Scottish Government. It may change behaviour as in banning smoking in public places or it may address poverty and bad housing. Poverty is bad for health but poverty applies only to the lowest in the social scale whilst there is a gradient of health and life expectancy right across the social classes.[22] The benefit of giving money to poor families is unclear.[23] Laws may aim to curb tobacco or alcohol use. Raising taxation reduces tobacco consumption[24] and there are a number of ways of other ways of reducing alcohol consumption too.[25] Subsidy as well as taxation may make healthy food more attractive and unhealthy food less so.[26] Governments must assure funding for health promotion campaigns and may help with coordination across various departments. The NHS is an obvious department to be involved in both health promotion and provision of medical services. Education may be important in trying to change both knowledge and attitudes amongst young people. It can help to develop an interest and knowledge in healthy eating and cooking. It can aim to change attitudes to tobacco, alcohol and drugs and encourage an ethos of exercise. The Department of Trade and Industry may be involved in economic regeneration. Both the police and courts may be able to direct people with problems related to drug or alcohol abuse towards care rather than just a punitive system. The process of change Health promotion aims to get individuals to change to a healthier lifestyle. This is not easy to achieve. Change is rarely easy. It involves the individual going through several steps on the way to achieve a lasting change in habit and attitude. Health promotion initiatives The mechanism for health promotion is usually mass media campaigns. They seem to work for smoking cessation[27] and even in changing sexual behaviour in young people.[28] However, there is very little evidence about long term effects. Campaigns may be aimed at one facet or multiple risks. For example, diet, weight and exercise are intimately entwined. This may spill over into smoking, alcohol and drug abuse. Health promotion may be at a national, community or individual level. The individual level is usually when a patient is seen in a medical setting, especially general practice. Simply exhorting people to change is not enough. It must be facilitated. Most general practices have antismoking clinics where support, advice and even prescriptions to help withdrawal may be had. The subject has been extensively reviewed by both CKS[29] and NICE.[30] People must be helped to appreciate what is healthy food and that it is not more expensive than their traditional diet. Fun runs are of limited value as they are an isolated event. Changes in diet and exercise must be for life. The individual must find a form of exercise that he can manage and he likes or he will not persevere. Counselling and support for substance abusers must be available. Methadone can give stability to the life of a heroin user[31] and acamprosate can reduce the craving for alcohol[32] but counselling must not be ignored. Long term change In Europe it is usually suggested that inequalities in health are the result of inequalities in income. In the USA they focus on health literacy[33] and suggest that it is inequality in education that is responsible. As income and education tend to be related it is possible that one is a surrogate for the other. Health is worse in those of lower intelligence but this does not account for all the discrepancy.[34]. People from poorer backgrounds are more likely to smoke.[35] Smoking is the main cause of differences in death rates in middle age across socio-economic groups. In men between 35 and 69 years, it accounts for 59% of social class differences in death rates.[36] They are more likely to be obese[37] and this may be linked to the higher incidence of diabetes.[38] Abuse of alcohol is more prevalent as is drug abuse. They are more likely to experience teenage pregnancy[39] and to be involved in accidents.[40] Accidents are a major cause of death and disability in those under 45.[41] They are more common in lower social classes and in males more than females. This is not just due to high risk jobs as both poverty[42] and lower social class[43] are risk factors for children too. There is also a relationship between poverty and poor mental health.[44] However, as poor mental health causes social decline the question of cause and effect arises. Perhaps the most important aspect of long term health improvement is improvement in general education. Health literacy is closely related to general literacy.[45] People of poor health literacy have poor lifestyles, they present late with disease and are poor in compliance with management. Those with poor educational achievement have a dead end job or no job. They have low self esteem and are more likely to abuse drugs and alcohol, to smoke and have a poor diet. Teenage pregnancy is more common in low achievers. Improved education, improved job prospects and improved standard of living are the key to improving health. Bibliography: Social Determinants of Health by Michael Marmot and Richard Wilkinson. Oxford 2005. Promoting Health: A Practical Guide by Linda Ewles and Ina Simnett. Balliere Tindall 2003. Challenging Health Inequalities: From Acheson to Choosing Health (Health Society). Elizabeth Dowler and Nick J. Spencer. University of Bristol 2007. Footnotes: [1] World Health Organisation. WHO definition of Health. http://www.who.int/about/definition/en/print.html [2] Upmy street.com. http://www.upmystreet.com/local/my-neighbours/population/l/Glasgow.html [3] DirectGlasgow.co.uk http://www.directglasgow.co.uk/glasgow-information/glasgow-information.asp [4] Indices of Deprivation 2007. http://www.communities.gov.uk/communities/neighbourhoodrenewal/deprivation/deprivation07/ [5] Scottish Index of Multiple Deprivation. http://www.scotland.gov.uk/Topics/Statistics/SIMD/ [6] The Black Report. http://www.sochealth.co.uk/history/black.htm [7] The Acheson Report. . http://www.archive.official-documents.co.uk/document/doh/ih/contents.htm [8] Tudor Hart J The inverse care law. Lancet 27 Feb 1971. 1(7696):405-12. [9] Department of Health. Search on â€Å"health inequalities†. http://www.dh.gov.uk/en/AdvanceSearchResult/index.htm?searchTerms=health+inequalities [10] WHO. Commission on Social Determinants of Health Final Report. 2008. http://www.who.int/social_determinants/final_report/en/ [11] Office of National Statistics. http://www.statistics.gov.uk/cci/nugget.asp?id=881 [12] Leyland AH, Dundas R, McLoone P, Boddy FA. Inequalities in Health Inequalities in mortality. MRC http://www.inequalitiesinhealth.com/public/index.php?cmd=smartyid=1_len [13] Scottish Government Health Directorates. Coronary heart disease/ stroke task force report. September 2001 http://www.sehd.scot.nhs.uk/publications/cdtf/cdtf-05.htm [14] National Cancer Intelligence Network. News release. 7th October 2008. http://www.ncin.org.uk/press/UKIM1008press.pdf [15] The Scotsman. 10th March 2003. http://news.scotsman.com/obesity/Glasgow-digests-UKs-fattest-city.2409145.jp [16] World Health Organisation. 2008. Cancer: diet and physical activity’s impact. http://www.who.int/dietphysicalactivity/publications/facts/cancer/en/ [17] Leon DA, McCambridge J; Liver cirrhosis mortality rates in Britain from 1950 to 2002: an analysis of routine data. Lancet. 2006 Jan 7;367(9504):52-6. [abstract] http://www.ncbi.nlm.nih.gov/sites/entrez/16399153 [18] Scottish Public Health Observatory. Mental Health: Policy Context. http://www.scotpho.org.uk/home/Healthwell-beinganddisease/MentalHealth/mental_keypolicy.asp [19] British Hypertension Society. Proposed Joint British Societies Cardiovascular Disease. http://www.bhsoc.org/resources/prediction_chart.htm [20] Department of Health. Health Survey for England 2003. Published December 2004. http://www.dh.gov.uk/en/Publicationsandstatistics/Publications/PublicationsStatistics/DH_4098712 [21] Health Promotion. PatientUK. http://www.patient.co.uk/showdoc/16/ [22] Office of National Statistics. Variations persist in life expectancy by social class. October 2007. http://www.statistics.gov.uk/pdfdir/le1007.pdf [23] Lucas P, McIntosh K, Petticrew M, Roberts HM, Shiell A. Financial benefits for child health and well-being in low income or socially disadvantaged families in developed world countries. Cochrane Database of Systematic Reviews 2008, Issue 2. Art. No.: CD006358. http://www.cochrane.org/reviews/en/ab006358.html [24] Leverett M, Ashe M, Gerard S, Jenson J, Woollery T. Tobacco use: the impact of prices. J Law Med Ethics. 2002 Fall;30(3 Suppl):88-95. http://www.ncbi.nlm.nih.gov/pubmed/12508509 [25] Scottish Government. Effective and Cost Effective Measures to Reduce Alcohol Misuse in Scotland: An Update to the Literature Review. 2005. http://www.scotland.gov.uk/Publications/2005/01/20542/50232 [26] Caraher M, Cowburn G. Taxing food: implications for public health nutrition. Public Health Nutr. 2005 Dec;8(8):1242-9. Review. http://www.ncbi.nlm.nih.gov/sites/entrez/16372919 [27] Bala M, Strzeszynski L, Cahill K. Mass media interventions for smoking cessation in adults. Cochrane Database of Systematic Reviews 2008, Issue 1. Art. No.: CD004704. http://www.cochrane.org/reviews/en/ab004704.html [28] Delgado HM, Austin SB. Can media promote responsible sexual behaviors among adolescents and young adults? Curr Opin Pediatr. 2007 Aug;19(4):405-10. Review. http://www.ncbi.nlm.nih.gov/sites/entrez/17630603 [29] CKS Library. Smoking cessation. 2007. http://www.cks.library.nhs.uk/smoking_cessation [30] NICE. Smoking cessation. March 2006 http://www.nice.org.uk/guidance/index.jsp?action=byIDo=11375 [31] Department of Health. Drug misuse and dependence. UK Guidelines on clinical management. http://www.nta.nhs.uk/areas/Clinical_guidance/clinical_guidelines/docs/clinical_guidelines_2007.pdf [32] Kranzler HR, Gage A. Acamprosate efficacy in alcohol-dependent patients: summary of results from three pivotal trials. Am J Addict. 2008 Jan-Feb;17(1):70-6. Review. http://www.ncbi.nlm.nih.gov/sites/entrez /18214726 [33] Committee on Health Literacy, Institute of Medicine, Nielsen-Bohlman LN, Panzer AM, Kindig DA, eds. Health Literacy: A Prescription to End Confusion. Washington DC: The National Academies Press; 2004. [34] Batty GD, Der G, Macintyre S, et al; Does IQ explain socioeconomic inequalities in health? Evidence from a population based cohort study in the west of Scotland.; BMJ. 2006 Mar 11;332(7541):580-4. Epub 2006 Feb 1. [full text] http://www.bmj.com/cgi/content/full/332/7541/580 [35] Jefferis BJ, Power C, Graham H, Manor O. Changing social gradients in cigarette smoking and cessation over two decades of adult follow-up in a British birth cohort. J Public Health (Oxf). 2004 Mar;26(1):13-8. http://www.ncbi.nlm.nih.gov/pubmed/15044567 [36] Jha P, Peto R, Zatonski W, Boreham J, Jarvis MJ, Lopez AD. Social inequalities in male mortality, and in male mortality from smoking: indirect estimation from national death rates in England and Wales, Poland, and North America. Lancet. 2006 Jul 29;368(9533):367-70. http://www.ncbi.nlm.nih.gov/pubmed/11226355 [37] James WPT, Nelson M, Ralph A et al. Socioeconomic determinants of health: the contribution of nutrition to inequalities in health. BMJ 1997;314(7093):1545–1549. http://www.bmj.com/cgi/content/full/314/7093/1545 [38] Office of National Statistics. Prevalence of diagnosed diabetes mellitus in general practice in England and Wales,1994 to 1998. http://www.statistics.gov.uk/CCI/article.asp?ID=1519Pos=1ColRank=1Rank=224 [39] McCulloch A. Teenage childbearing in Great Britain and the spatial concentration of poverty households. J Epidemiol Community Health.2001 Jan;55(1):16-23. http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrievedb=PubMeddopt=Abstractlist_uids=11112946 [40] Khambalia A, Joshi P, Brussoni M, Raina P, Morrongiello B, Macarthur C. Risk factors for unintentional injuries due to falls in children aged 0-6 years: a systematic review. Inj Prev. 2006 Dec;12(6):378-81. Review. http://www.ncbi.nlm.nih.gov/pubmed/17170185 [41] Royal Society for the Prevention of Accidents. General Accident. January 2007. http://www.rospa.org.uk/factsheets/general_accidents.pdf [42] Khambalia A, Joshi P, Brussoni M, Raina P, Morrongiello B, Macarthur C. Risk factors for unintentional injuries due to falls in children aged 0-6 years: a systematic review. Inj Prev. 2006 Dec;12(6):378-81. Review. http://www.ncbi.nlm.nih.gov/pubmed/17170185 [43] Kemp A, Sibert J. Childhood accidents: epidemiology, trends, and prevention. J Accid Emerg Med. 1997 Sep;14(5):316-20. Review. http://www.ncbi.nlm.nih.gov/pubmed/9315935 [44] Payne S. Poverty and Mental Health in the Breadline Britain Survey. 1999. http://www.bris.ac.uk/poverty/pse/99-Pilot/99-Pilot_4.pdf [45] Kutner M, Greenberg E, Jin Y, Paulsen C. The Health Literacy of Americas Adults: Results From the 2003 National Assessment of Adult Literacy (NCES 2006-483). Washington, DC: National Center for Education Statistics, US Department of Education; 2006.

The programming and document

The programming and document 1. Introduction: The main intention of the assignment is to carry out the programming and document the automation of a Bytronic associated with Industrial Control Trainer using an Allen-Bradley Micrologix 1000 PLC. It includes Analysing the mechanical system, sensors and actuators. Establishing the control requirements. High-level design of the PLC program using the Sequential Function Chart (Grafcet) notation. Implementation of the program in ladder logic form using RSLogix 500 software. Program testing. Critical assessment of the completed program adjacent to the stated requirements. Programmable Logic Controller (PLC): Programmable Logic Controller (PLC) is a programmable electronic device that is used in the industrial automation systems in order to examine the system inputs and responses the behaviour of program to manage the output devices based upon the sequence and logic provided to the system. Approximately in all manufacturing line, electronics and electrical shops and as well as in some type of the mechanicals; this process is greatly enhanced. PLC is mainly used in industries and machineries. For general purpose, the PLC is mainly designed for the multiple inputs and responses the arrangements of output. But in real-time PLC, the output must be produced within a restricted time for the given input conditions. The main benefits of the PLC are: Communication possibilities. Flexibilities. Reliability Realization of complex control algorithms. System is very simple. Special devices are available. The main functionality of the PLC is to include sequential relay control, statistical discipline that deals with the algorithms and mechanism for controlling the output of a process and distributed control systems. History Of PLCs: In the need of the American automotive manufacturing industry, the PLC was invented. Initially the programmable controllers were adopted by the automated industry. When production models changed, the software revision has been replaced by re-wiring hard-wired control panel. The first programmable logic controllers were designed and developed by Modicon as a relay re-placer for GM and Landis. Later the PLCs were designed to replace the relay logic systems after that the PLC were programmed in ladder logic which strongly resembles in relay logic. Modern PLC, in Variety ways the programmed can be altered from ladder logic to more traditional languages like C and BASIC. While reducing the cabinet space that housed the logic, the new system severely increased the functionality of the controls. The first PLC, model 084, was invented by Dick Morley in 1969. The first commercial successful PLC, the 184, was introduced in 1973 and was designed by Michael Greenberg. Interior Structure Of PLC: Programmable Logic Controller is a microprocessor based device that mainly consists of CPU, I/O devices and memory. Additionally it is also connected to the program reader, memory unit and programming and printer. Perform housekeeping activities like communications through RS-232, internal diagnostics etc. Perform the control instructions contained in the users programs. This program is stored in ‘ROM/EPROM which is non-volatile memory (data/program cannot be lost when the power has lost). Communicate with other devices like I/O devices, network, programming devices. The main difference between the PLCs and other microprocessor based devices are; PLCs are designed rough for the industrial settings and secured for improving the electric noise immunity and they are modular. 2. System Description: Programmable Logic Controller (PLC) is a programmable device that hub too many manufacturing industries processes. The internal structure of the PLC is similar to many parts of the systems and embedded controllers. The PLC depends upon the types of systems i.e. small, medium and large and depending on that the component of the system is built in the distributed unit. The microprocessor based unit is equipment used for controlling and tracking the manufacturing processes. The main advantage of the PLC is easy to design and modify the control process and also the programming languages were adopted. Microprocessor is the main part of the PLC which acts as a vice-versa in the systems. The commands and the instructions from the users program depend on the microprocessor to results system. PLC consists of microprocessor, memory integrated unit and it also consists of storage and reclaim the data from the memory unit. The PLC also includes the communication ports, so that it can transfer the data from system to the PLC and to other terminal devices. In real-time world, it has a capability to control the processes. The main position of the processor is to examine the number of inputs and results the responses from the system. RAM is a Random Access Memory which is a volatile memory (i.e. when the power has lost the data will be lost). This type of RAM is not used in the system and it may causes some battery back up in slot. The CMOSRAM (Complementary Metal Oxide Semiconductor RAM) is used for storage memory and ladder logic diagram. EEPROM (Electrically Erasable Programmable Read Only Memory) is also a non-volatile memory and this type of memory is used for the storage of large amount of data. The other electric devices are used for the storage of small amount of data. It is used to back up the major program in the CMOSRAM processor. ROM (Read Only Memory) is also a non- volatile memory. It can only read the program and the program cannot be modified. It is mainly used to distribute firmware and it does not require an external power supply. Input Module: There are several types of input devices to be taken such as pushbuttons, thumb switches and some other devices etc. And some other DC inputs devices like electronic card access, thumbprint, etc are used for the application to access the input module. But in most of the industrial sector system are provided with the essential noisy and electric isolation between the processor and the module. In majority of industrial systems, the processor for the input module takes from 8 to 32 input bits. For each and every input bit the address will be allocated according to the processor instructions. Output Module: The output module can be used for both the device (AC or DC) such as solenoids, relays, contractors and LED readouts. The result depends upon the input module to which the connection has been made through the ports or terminals. The connection towards the input and output devices may vary according to the power supply as well as load. For an analog device, the special type of output device is used to convert from a digital to analog. Whereas for the digital, the special type of output device is used to convert from analog to digital. For analog output device, the results are stored in 12 bit file and convert it to analog signal. The signal may vary from 0 to -10v for DC. Communications: The most commonly used for communication port is RS-232 9-pin connector. In PLC, RS-232 is an in built communication protocol to communicate within the peripheral interfaces and other terminal devices. In todays world, the wide range of communication link in some of the PLC is RS-485 which can access more speed. For peer to peer communication, the larger I/O devices are used in PLC program. There are different methods to communicate between a PLC and a programmer or even with two different PLC. In PLC, the application programs are written in personal computer and downloaded to the system (PC) using the plug in cable to the programming port of the PLC. This communication can be forwarded through the RS-232 or RS-485. The communication between two PLC can be conceded by the keen links supplied through the RS-232. Operation Of PLC: The operation of the all PLCs is followed in four steps continuously takes place in rotationally. The four basic steps followed by the PLC are Input Scan Program Scan Output scan Housekeeping. The below figure shows the operation of the PLC: 1) Input Scan: It detects all the state of inputs that are connected to the PLC. 2) Program Scan: Examine the program logic created by the user to execute. 3) Output Scan: All the output devices that are connected to the PLC can be energizes or de-energizes. 4) Housekeeping: This step is used to communicate with the peripherals, programming terminals and other devices etc. PLC Diagram Description: In PLC the programs are fabricated based upon the ‘gates simultaneously with the inputs, timers, counters, outputs, internal memory bits, analog inputs, comparators, analog output etc. Inputs: The physical connections that are connected to the PLC are switches, pushbuttons, sensors and anything which acts like a switch or signal to the state of ON and OFF position. The voltages that accept to some of the devices are 24V DC and some may not; it may vary. The switch when it is in ON state, then status of the device bit is ‘1 and when it goes to OFF state the status of the device bit is ‘0. Output: The result that appears from the input devices is the communication between the PLC and other terminals. They are used to control the solenoids, sensors, and connectors etc to on and off position. In the PLC, there are 8 sensors and 5 actuators were used. The result from each sensor response the actuators and other sensors to perform the task. These eight sensors has different task they are 1) Sensor1: It detects the presence of peg in the upper sort area. 2) Sensor2: It detects the components in front of the solenoid at the upper sort area of the ring chute. 3) Sensor3: It detects the presence of ring in assembly area. 4) Sensor4: It is used to commence assembling. 5) Sensor5: It is used to terminate the assembling. 6) Sensor6: It is used to detect the complete assemblies. 7) Sensor7: It is used to detect the components at the lower sort area. 8) Sensor8: It is used to detect the components and assemblies near the reject area solenoid. The purpose of 5 actuator which are used in PLC area are 1) Actuator1: It drives the upper chain conveyor motor. 2) Actuator2: It drives the lower chain conveyor motor. 3) Actuator3: It knocks the ring in the ring chute. 4) Actuator4: It releases the ring into the assembly area. 5) Actuator5: It rejects the unassembled components. Relay: A relay is a switch which is operated on the electromagnetic. Counters: when a pre-assigned count value is reached, the digital counters are in the form of relay contact. Timers: Timer consists of internal clock, a count value register and an accumulator which is used to count the time. 3. Requirements: The requirements for the PLC diagram are Ladder diagram Structure text programming Instruction list Functional block programming Sequential functional chart. Requirements Constraints: During the operation, Conveyor belts should be kept moving. When sensor 1 senses it, the actuator 3 should knock only the ring. Overloading of rings should be collected in the surplus rings box. The ring should not enter the peg chute or vice versa. The peg chute and the ring chute should be kept clean for the peg and the ring to slide in to that. By the actuator 5, Unassembled components should be knocked down Constraints Actuator should not knock the ring when there are more than 5 rings in the chute if there are more rings 5 rings then the progress will be blocked. The area between the actuator 4 and the sensor 3 should be clear for the next peg to occupy the space. Only if the peg moves past the ring the assembly will be over. If there are more than 5 rings in the ring chute, the actuator 3 cannot knock. 4. Program Design: The graphical representation of the logic essential in relay logic is a ladder diagram. The ladder diagram instruction consists of relays, timers and counters, program control, data transfer, arithmetic operation and data manipulations. In order to create programmable controller program, the ladder diagram language is used. The control logic can be obtained by reducing the ladder instructions symbols. The main objective of the ladder diagram is to control the outputs based on the input circumstances. Based on the simple logic, the ladder rungs can be reduced and also the controlling rungs are based on the logic. The ladder instructions consist of some symbols to perform the program. The symbols to be used in the programming and instruction set are basic relay type contacts and coil symbols. The representation of the coil symbol is used at the output and whereas the representation of the contact symbol is used at the conditions in orders to control the output. For each and every contact and coil, an address number will be referred. Function Block Programming: In this function block, the instruction for the programming is very complex for the users program such as data transfer, shift register instruction and so on. And these are also basic building blocks for the control systems. Sequential Function Chart: There are some steps to follow the sequential function chart program symbols, they are Start block Initial block Step block Transition OR path AND path There are three basic standard rules to be followed by the chart 1) The first step is to active the program at the start block and the programming have an option of restarting the device. 2) After the completion of the steps one by one, the transition state will be tested and the action will be continued until the transition is in true state. 3) Once the transition is in true state, the processor scans the steps once again to rearrange all timer instructions and executes the next step. The processor scans starts the sequential function chart from left to right side and if chart is encountered then it examines the ladder logic from left side to right side. Grafcet is a graphical function chart programming language. This language was adopted by telemechanique into the programmable control language and this language is used for the sequence behaviour of the program. Each step represents the state of system to be controlled and the horizontal bar represents the conditions to perform the accomplishment. 6. Explanation Of Program: Stage1: 0000 If flag1 (B3:1/1) is set to ON state and input sensor 4 is ON (I:0/18) but the input sensor 5 (I:0/19) is set to OFF state then LATCH (Enable) the flag2 and UNLATCH the flag1. 0001 If flag 2 (B3:1/2) is set to ON state then ENABLE both the output actuator 1 which is a lower conveyor motor (o:0/3) and the output actuator 2 which is a upper conveyor motor (o:0/4). 0002 If flag 2 is ENABLE and the input sensor 5 (I:0/19) is set to ON state then LATCH the flag1 and UNLATCH the flag 2. Stage 2: 0003 If flag 3 (B3:2/1) is set to ON state and the input sensor 2 (I:0/1) is ON state and input sensor 1 (I:0/4) is set to OFF state and the counter C5 is less than five then LATCH the flag 4 (B3:2/2) and UNLATCH the flag 3 (B3:2/1). 0004 If the flag 4 (B3:2/2) is set to ON state then enables the timer 1 to 0.01 and preset value to 50 and ENABLES the output actuator 3 (o:0/0). 0005 If the flag 4 is set to ON state and the timer 1 is decrementing then UNLATCH the flag 4 and LATCH the flag 5 (B3:2/3). 0006 If the flag 5 (B3:2/3) is set to ON state and then set the timer 2 (T4:1) to 0.01 second and preset value to 20 seconds. 0007 If the flag 5 is set to ON state and the timer 2 (T4:1) is enable and then LATCH the flag 6 and UNLATCH the flag 5. 0008 If the flag 6 (B3:2/4) is set to ON state and then set the counter to up C5:0 and preset value to 5. 0009 If the flag 6 is set to ON state and counter up is enabled then LATCH flag 3 and UNLATCH flag 6. Stage 3: 0010 If the flag 7 (B3:3/1) is set to ON state and the input sensor 3 (I:0/0) is set to OFF state and then C5:0.ACC source A 0011 If the flag 8 (B3:3/2) is set to ON state and timer 3 (T4:2) is set to base as 0.01 and preset value to 50 and ENABLES the output actuator 4 (o:0/1). 0012 If the flag 8 is set to ON state and the timer 3 (T4:2) is decreasing and then LATCH the flag 9 and UNLATCH the flag8. 0013 If the flag 9 (B3:3/3) is set to ON state and then set the counter down by 1. 0014 If the flag 9 is set to ON state and the input sensor 3 (I:0/0) is set to OFF state then LATCH the flag 10 and UNLATCH the flag 9. 0015 If the flag 10 (B3:3/4) is set to ON state and the input sensor 9 (I:0/5) is set to ON state then LATCH the flag 7 and UNLATCH the flag 10. Stage 4: 0016 If the flag 11 (B3:4/1) is set to ON state and the input sensor 6 (I:0/6) is set to ON state and then LATCH flag 12 and UNLATCH flag 11. 0017 If the flag 12 (B3:4/2) is set to ON state and the input sensor 8 (I:0/2) is set to ON state then UNLATCH the flag 12 and LATCH the flag 13. 0018 If the flag 13 (B3:4/3) is set to ON state and the input sensor 8 (I:0/2) is set to OFF state then LATCH the flag 11 and UNLATCH the flag 13. 0019 If the flag 11 (B3:4/1) is set to ON state and the input sensor 8 (I:0/2) is set to ON state then UNLATCH the flag 11 and LATCH the flag 14. 0020 If the flag 14 (B3:4/4) is set to ON state and then ENABLE the output actuator 5 (o:0/2). 0021 If the flag 14 is set to ON state and the input sensor 8 (I:0/2) is set to OFF state and then LATCH the flag 11 and UNLATCH the flag 14. 0022 END 7. The Rejection Component: In PLC, the unassembled components are rejected by the sensor 8 (I:0/2). The problem in which the unassembled components are rejected due to the delay in the actuator 4 or the peg which comes from the peg chute initially but not the ring or the assembled components which comes from the sensor 3 moves a bit distance at which the sensor 6 cannot detects the component then the rejection of the component could be taken by the sensor 8. And also there must be delay in the actuator 3 in order to push the rings in to the chute. These are the reasons for the rejection of the assembled and unassembled components. 8. Testing: There are four tests to check whether the PLC is working under conditions or not. The first test is to check whether the sensor one is detecting the peg or not and the actuator 3 is knocking the ring into the chute through the detection of sensor 2. The second test is whether the actuator 4 is holding the ring in the ring chute for some delay of time and allowing only the rings through detection of sensor 2. The third test is to check the whether the sensor 6 is detecting the assembled components at the lower sort area. The fourth test is to check the actuator 5 at the solenoid in order to reject the unassembled components. 9. Discussion: In modern control systems, the mechanical and electrical parts are used to design the machinery. In most of the control systems, there is a relay in the circuits, programming controllers and some other special devices are used. There are several ways to select the PLC. The most important in selecting the PLC is the processor. The cost of the system is very cheap and it is reliable and flexible. In PLC the user program cannot be analyzed. The main benefit of the Programmable controllers is the flexibility. The effectiveness of the use of the PLC is the software controller in which the PC software solution that relates devices via communications protocols. The main focus is based on the programming languages. These languages are built with the logic of the various instruction set. The following are the methods for selecting the PLC are 1) Maximum number of inputs and outputs is allowed. (Digital, analogue, inputs, outputs). 2) Layout of sensors and actuators. ( peripherals) 3) Nature of solution.( New or existing) 4) Special signals and modules. (high speed digital outputs) 5) Processor properties. (program and data memory) 6) Working conditions. (temperature, humidity, dust) 7) Communications. (ASCII) 8) Specialities of program. (special functions) The limitations of the PLC are 1) To store a large amount of data, the program controllers are not capable with sufficient memory. 2) The temporal network which is traceable by hardly overloads can cause the issue in automation system communication. Conclusion: The solution that set the industrial standard is the Allen-Bradley Micrologic 1000PLC. For the digital I/O, the micrologic 1000PLC are available in 10-points,16-points and 32-points and whereas fort the analogue I/O, the micrologic 1000PLC are available in 20-points digital I/O, with 4 analog inputs and 1 analog output. The successfully method for the Allen-Bradley manufactures-lower costs, flexibility, high quality and fast start ups. This control method has been successfully invented by the PLC program. The major parts of the PLC are sensors, solenoids and actuators. These sensors and actuators will acts as a vital role in the PLC. The pegs and the rings that come on the upper sort and lower sort area can be detected through the sensors. Thus, by placing the sensors and actuators in the suitable place, the rings and pegs can reach the destination successfully. The program is tested and thus the results is achieved successfully without any errors.

Whittington Castle :: European Europe History

Whittington Castle When assigned the England project, I wanted to research something having to do with my heritage. My ancestors originate from England. Correspondingly, I chose Whittington Castle. According to an old English legend, one of my family ancestors, Dick Whittington, set out from the castle for London, in search of his fortune. After residing in London for a time, Dick Whittington went on to be "thrice Lord Mayor of London". That piece of history supposedly occurred in 1368, but the first construction of Whittington Castle was in 845 and modeled after the Norman Motte and Bailey castles of the time. Entirely, my information on Whittington Castle came from Internet sources. Because of the unfortunate ruination of ancient castle, it is almost forgotten today. Except for several small web sites, I found little or no information on Whittington castle. One such site was http://www.data-wales.co.uk/whitt.htm. Another site was http://www.btinternet.com/~whittington.castle/. Intriguing was the next site I found: http://www.castlewales.com/whittng.html. Constructing the Whittington castle in 845, the builders designed it after the Motte and Bailey style castles. But it was later remodeled in 1221 replacing the old structure with stone. Originally, the castle was assembled with seven towers, each about 18 meters high, with wall 3.7 meters thick, and a drawbridge over 12 meters long. Now, only the gatehouse remains. Around the castle, extensive marshlands acted as protection in medieval days. The remnants of Whittington castle are situated in the small village of Whittington, a few miles outside of Shrewsbury, England. Originally, the motte castle of Whittington was built by the Welsh Prince Ynyr ap Cadfarch. After being seized by Roger de Montgomery, the castle was given to Sir William Perveril of Peak. Perveril had no male heir; therefore his eldest daughter Mellet inherited the castle. Passing down through marriage to the fitz Warren family, King Henry III granted the fitz Warrens permission to build a stone fortress on the motte foundation. Although friends with King Henry, the fitz Warrens had an interesting love/hate relationship with the English monarchy. Fulk fitz Warren is reputed to have quarreled with Prince John, eventually causing Warren to flee France. He avoided certain death. Subsequent to Fulk's exile and pardon, he was able to return and repossess Whittington castle. Judiciously, the fitz Warren family held the fortress and its grounds until 1420. Interesting is one legend concerning the heirs of Whittington Castle. In the ruins it said that people have seen and heard two children peering out of the twin towers. Whittington Castle :: European Europe History Whittington Castle When assigned the England project, I wanted to research something having to do with my heritage. My ancestors originate from England. Correspondingly, I chose Whittington Castle. According to an old English legend, one of my family ancestors, Dick Whittington, set out from the castle for London, in search of his fortune. After residing in London for a time, Dick Whittington went on to be "thrice Lord Mayor of London". That piece of history supposedly occurred in 1368, but the first construction of Whittington Castle was in 845 and modeled after the Norman Motte and Bailey castles of the time. Entirely, my information on Whittington Castle came from Internet sources. Because of the unfortunate ruination of ancient castle, it is almost forgotten today. Except for several small web sites, I found little or no information on Whittington castle. One such site was http://www.data-wales.co.uk/whitt.htm. Another site was http://www.btinternet.com/~whittington.castle/. Intriguing was the next site I found: http://www.castlewales.com/whittng.html. Constructing the Whittington castle in 845, the builders designed it after the Motte and Bailey style castles. But it was later remodeled in 1221 replacing the old structure with stone. Originally, the castle was assembled with seven towers, each about 18 meters high, with wall 3.7 meters thick, and a drawbridge over 12 meters long. Now, only the gatehouse remains. Around the castle, extensive marshlands acted as protection in medieval days. The remnants of Whittington castle are situated in the small village of Whittington, a few miles outside of Shrewsbury, England. Originally, the motte castle of Whittington was built by the Welsh Prince Ynyr ap Cadfarch. After being seized by Roger de Montgomery, the castle was given to Sir William Perveril of Peak. Perveril had no male heir; therefore his eldest daughter Mellet inherited the castle. Passing down through marriage to the fitz Warren family, King Henry III granted the fitz Warrens permission to build a stone fortress on the motte foundation. Although friends with King Henry, the fitz Warrens had an interesting love/hate relationship with the English monarchy. Fulk fitz Warren is reputed to have quarreled with Prince John, eventually causing Warren to flee France. He avoided certain death. Subsequent to Fulk's exile and pardon, he was able to return and repossess Whittington castle. Judiciously, the fitz Warren family held the fortress and its grounds until 1420. Interesting is one legend concerning the heirs of Whittington Castle. In the ruins it said that people have seen and heard two children peering out of the twin towers.

Knowledge Is Power: How To Buy A Computer :: essays research papers

Knowledge is Power: How To Buy A Computer Buying a personal computer can be as difficult as buying a car. No matter how much one investigates, how many dealers a person visits, and how much bargaining a person has done on the price, he still may not be really certain that he has gotten a good deal. There are good reasons for this uncertainty. Computers change at much faster rate than any other kind of product. A two-year-old car will always get a person where he wants to go, but a two-year-old computer may be completely inadequate for his needs. Also, the average person is not technically savvy enough to make an informed decision on the best processor to buy, the right size for a hard drive, or how much memory he or she really needs. Just because buying a computer can be confusing does not mean one should throw up his hands and put himself at the mercy of some salesman who may not know much more than he does. If one would follow a few basic guidelines, he could be assured of making a wise purchase decision. A computer has only one purpose; to run programs. Some programs require more computing power than others. In order to figure out how powerful a computer the consumer needs, therefore, a person must first determine which programs he wants to run. For many buyers, this creates a problem. They cannot buy a computer until they know what they want to do with it, but they cannot really know all of the uses there are for a computer until they own one. This problem is not as tough as it seems, however. The consumer should go to his local computer store, and look at the software that's available. Most programs explain their minimum hardware requirements right on the box. After looking at a few packages, it should be pretty clear to the consumer that any mid-range system will run 99% of the available software. A person should only need a top-of-the-line system for professional applications such as graphic design, video production, or engineering. Software tends to lag behind hardware, because it's written to reach the widest possible audience. A program that only works on the fastest Pentium Pro system has very limited sales potential, so most programs written in 1985 work just fine on a fast '486, or an entry-level Pentium system. More importantly, very few programs are optimized to take advantage of a Pentium's power. That means that even if the consumer pays a large premium for the fastest

Define personality & motivation

Personalities are usually described as how introverted or extroverted someone is. And introvert is someone who is usually more quiet and thoughtful whereas as an extrovert is someone who is more loud and excitable. If you are either introvert or extrovert it often affects the types of sport you like e. G. And introvert character would usually play something Like tennis as it's a sport they can play as one and not In a team, an extrovert person would usually Like team sports more such as football and rugby. Introverts enjoy sports with more concentration, precision with intricate skills.Introvert characters are usually more self-motivated. Extroverts tend to enjoy sports which are faster paced, exciting and where you need a lower concentration. These are usually team sports and they tend to be motivated by others around them. Extroverted people are often Involved in sports which require a degree of aggression. There are 2 types of aggression: Indirect aggression – this means ta king out your aggression on an object. Direct aggression – The aggression is in the direction of another player. It involves physical contact such as a rugby tackle or in wrestling or boxing.Essence's theory – The Essence's theory was thought of by a German man who Identified two dimensions f personality which act as continuous, with an individual's personality falling anywhere along the two lines, as shown below These two dimensions are stable/unstable and introverted/extroverted. For example, if an Individual Is introverted (shy of social contact) but stable, they are likely to be reliable, calm and controlled. An extroverted (enjoys social affiliation) unstable individual is likely to be tough, aggressive and excitable. Rationality, there are 3 different types of body types; Stepmother – these are people with a tall slim figure, Sheldon thought these people tended to be more Self- unconscious, tense, private (keeps to themselves), and introverted. Endomorphis m – these people are shorter and are a bit fatter, Sheldon thought these people were more tolerant, sociable and relaxed. Monochromes – these are people who have broad shoulders and are more muscular, Sheldon thought these people were more extrovert, assertive, and are risk takers.The Giordano theory (trait theory) – this theory is split into to 2, there are 2 types of people Type A and Type B. Type A – these are more introvert people which enjoy their own company, they have a strong desire to succeed, they like control, often suffers tress and are never happy with what they have (they always want more). Being a type A person will benefit their performance if they are doing a sport which involves only themselves. Type B – these tend to be more extrovert people who are more laid back and happy with what they have, they're less competitive and often work at a slower pace.They do not enjoy control and they're able to relax easily. Being a type B perso n will often benefit them if they're playing a team sports and where they can have the help of others. Motivation – a reason or reasons for acting or behaving in a particular way. There are several theories to do with motivation, these include; The attribution theory – a belief required overtime that one has no control over events and that failure is inevitable / out of their hands. It's a feeling of hopelessness.There are 3 attribution categories these are stability, locus of casualty, locus of control. These 3 categories all go two ways. Stability – you can either be stable or unstable. Locus of casualty – you can either be internal or external. Locus of control – the person can either be in control of themselves or out of control of themselves. Athlete's that attribute their performance outcome to stable internal factors such as effort and ability and to factors under their control are more likely to achieve in sport.Athlete's that attribute the ir performance outcome to unstable-external factors such as luck and difficulty and to factors out of their control are more likely to fail in sport and as they have no goals set out for themselves. Intrinsic motivation comes from within the body, therefore it will be the performer driving themselves to be better. Intrinsic people tend to be able to overcome tasks eave goals set out for themselves to keep progress and maintain motivation. They will have a feeling of pride and enjoyment in their performing the skill.I believe it's better for a performer to be intrinsic because its they are driving themselves to better, they want to be better, therefore they will get better. Extrinsic motivation comes from outside of the performer. These are things which can encourage the athlete to perform and fall into two groups: Tangible rewards: These are physical rewards like medals, trophies and money. These should not be used as much with young athletes o avoid a situation where winning a priz e is more important than competing.

The Beneatha’s Dreams

Hansberry's play â€Å"A Raisin in the Sun† is the story of the Youngers, a poor African- American family in the 1940s. All of the Youngers have important dreams that they wish to realize but due to their economic status and the abundant racism of the time, and they are forced to put aside these dreams. However, due to the insurance money from â€Å"Big Walter†Ã¢â‚¬Ëœs death, they have a chance to overcome these obstacles and achieve their dreams. Beneatha is a good example of a character whose dreams have been deferred. Beneatha dreams of being a doctor and throughout the play, struggles to determine her identity as a well-educated black woman. Beneatha is a collage student and is obviously the best educated member of the Younger family. Her education is very important to her and she hopes to one day become a doctor. Beneatha believes in education as a means to understanding and self-fulfillment through knowledge and wisdom. It was rare at this time to find a poor well-educated black woman with such high ambitions. Beneatha took pride in this fact and often flaunted her intelligence to her family. Mama, knowing how much her education meant to her, instructed Walter to save $3000 for Beneatha's medical schooling. When it was discovered that Walter had invested the money in his liquor store scheme and Willy had run off with all the money, Beneatha was devastated. She had lost all hope and even though her spirits may have been lifted after her talk with Asagai in act III and the chance to move into a new house, it seems that Beneatha will never realize this dream. Another major dream that Beneatha wants is to have her own identity. In the play she does this by trying to gain a better grasp on her cultural identity as an African-American. The rest of her family, after living in America for five generations, seem out of touch with their African heritage, so Beneatha turns to Asagai, a native Nigerian, to see if he can supply the lost part of herself. Beneatha dresses in Nigerian garb, dances to African music, and lets her hair grow naturally in an attempt to become more African. Beneatha does this in part because she sincerely wants to identify herself as an Africa-American but she also does it in protest of what she calls an â€Å"oppressive† white culture. Beneatha also dreamed of overcoming not only the prejudice against blacks, but also the prejudice against women. In the 1940s, it was common belief that a woman's place was at home and it was very rare for any woman to become a doctor. Even Walter suggests that she become a nurse, a traditionally woman's job, instead. Beneatha was an early feminist and did not take the traditionally submissive role of a woman. Instead, she spoke up against anything she perceived as an injustice. She became particularly passionate about freeing the Africans from French and English colonizers after talking to Asagai. In the play â€Å"A Raisin in the Sun,† all of the main characters were guided by their dreams, and the same is true for Beneatha. In the play, Beneatha struggles to create her own identity while battling against the abundant prejudice of the day. While she partially succeeds at creating her own identity, her dreams of becoming a doctor fall short when Walter losses the necessary money. However, Beneatha is a strong, intelligent woman and will most likely succeed later in life.