Research Essay Example | Topics and Well Written Essays - 500 words - 5

Research - Essay Example This has resulted in losing focus on the real reason teachers should focus upon diversity issues, i.e., to better understand their students and help them learn in a heterogeneous classroom. Personal Reaction. My personal reaction to this article is agreement. I think that diversity should extend beyond race and language to include other significant differences in the classroom. I agree that teachers should focus on providing the best possible learning environment. Summary. The article by Linda Pickett (2008) asserts that every child is, at its core, an intact human being. As such, they have a hunger for learning, an inborn sense of what is fair, and a desire for validation that, if given, is returned. She notes that in spite of these characteristics, society is war-torn and full of ethnic conflicts that require the cultivation of nurturing children in their innate good qualities. In spite of the increase of social diversity, however, most debates in education focus on maintaining a competitive edge in global competition. Thus, she concludes, educators must find a way to bring families and children together as partners in fostering tolerance. Personal Reaction. I agree that teachers can occupy a unique position to encourage diversity. I am not convinced that the primary focus of current education debate is literacy, math, and science, however. I think that diversity is a concentration point, if not a debate, in the profession. Important Questions (3). How can teachers foster the innate goodness of young children? Is diversity taking second place to global competitiveness? If given the opportunity during early pre-school education, will children demonstrate tolerance as they develop? Summary. In a very interesting article on poverty as a component of classroom diversity, Cuthrell, Ledford, & Stapleton (2007) provide a compelling story of a young

Use of ict Essay Example | Topics and Well Written Essays - 1250 words

Use of ict - Essay Example Positive ICT investments and policies are undoubtedly beneficial to HEIs, even if ICTs have not managed adequately to replace classroom-based instructing models. Generally, ICTs offer effective access for various target learners besides academically termed as vehicles meant for enhanced pedagogical experiences. This is especially to distance learners whose separation between them and their respective HEIs id due to space as well as time (Surry, Stefurak & Gray, 2011, p.45). In most HEIs, some of the major ICT facilities used include, Together with the ever-rampant utilization of ICTs in basic education, most students get to campus with higher hopes in terms of technology uses and corresponding pedagogies. The gaps that exist between higher educational practices and student social media abilities are likely to broaden unless respective administrators ensure educational practices that bring about adequate reforms. Generally, from a pedagogical outlook, network technology such as social media tools avails greater potentials for both collaborative and interactive learning. Tools that employ networking knowhow avail students with an open as well as an innovative development platform (Surry, Stefurak & Gray, 2011). In addition, it also avails an opportunity for aiding collaborative and interactive ways of learning mainly for those having exceptional needs (Surry, Stefurak & Gray, 2011, p.46). The enhancement of a wireless knowhow such as mobile wireless expertise has ensured generation of a significant level of excitement among academicians and practitioners. Reason being, it leads to a shift in the academic environment from out-dated settings to mobile learning (m-learning) settings (Ehlers & Schneckenberg, 2010, p.14). Certainly, augmenting numbers of HEIs provide courses using wireless technology (for example, m-learning) as an substitute to learning and teaching tools. However, despite such interests in

Mutterings over the Crib of a Deaf Child Essay Example for Free

Mutterings over the Crib of a Deaf Child Essay The poem is a work of classic poetic prowess. It paints a vivid picture of a world where there is no sound, yet that world is just as fluent in operation as the one with. The poem undertakes the difficulties a deaf child would face in the real world, in contemplation of which he would have to make do with the other 4 senses, and in explaining how he would utilize those, Wright manages to paint pictures in the reader’s head that take him through the deaf child’s way of life were he to experience the same things a normal child would. The images that are conjured up will thus be considered in order to understand what emotions the two speakers are going through as they relay what a deaf child undergoes in his quest to live through the ordeals of a normal life with one sense less. Analysis The poem is depicted as a question and answer session where one speaker addresses the problem the deaf child might have to face in the world and the other portrays the effect of a heightened visual aura as well as more prominent ancillary senses that may make up for his deafness. To communicate this ideology, Wright utilizes the tool of articulating imagery, which forces the reader to visualize what the speaker is relaying and the passion which he relates to it. The first speaker, for example, discusses how important the sense of sound is and how impairment to the same would render a person seriously disabled to the basic sounds one undergoes, such as the bell at school and the cry of the starlings. In reply, the second speaker puts a lot of weight on cherishing life with the remaining senses, which a deaf person has the ability to put into perspective. Thus, every single argument is rebutted, with the second speaker taking careful note of the visual elements that contribute to a person’s knowledge, such as the measure of the clock and the shade crawling upon the rock as the day ends. The questions continue and sleep factors in when the first speaker reinvigorates the need to sleep and wake up on time, which as a child is the responsibility of the parent. Of course, this is a clear indication of how strongly he feels about the use of sound in early childhood as the young one is still learning to get accustomed to the ways of the world. The second speaker is adamant on the use of visual perception to counter all the missing elements of sound, as when the child’s finger bleeds he will learn to get accustomed to pain where as a whistling bobwhite would simply indicate the emergence of night. Conclusion The two speakers were thus planted by Wright to demonstrate the emotional attachments humans attribute to the five senses. The first speaker very obviously arguing the importance of the sense of hearing coupled with an underlying passion for the audible rigors of childhood, during school and as a part of growing up, without which he believes that life may just be incomplete. The second speaker, however, is there to counter that very argument to its roots, indicating the importance of the remaining senses and how they more than make up for the deafness. This, as it were, has a larger than life element, as the second speaker so fervently argues the presence of a higher power, which negates any handicap that the child might face with other qualities naturally gifted to him, such as that of sight and touch. Thus, he is more emotional about his belief in God more than anything else.

Customer Relationship Strategy Case Study: Sainsburys

Customer Relationship Strategy Case Study: Sainsburys Research background: This research paper is focused strategy fallowed by Sainsbury to maintain customer relationship. In this research paper we will go through the different methods implemented by Sainsbury to gain relation with a customer. In todays global market relationship management had gained a lot of importance in every  business. The customer relationship is not confined with service industry, now a days  manufacturing industries too fallowing good relationship with their customers. The customer relationship management is applied by most of organizations because customer is the king in every business and he is the centre point to provide the revenue to a organization. Customer relationship management is a transparent wall between the customer and organization. Customer relationship will be measured based on the loyalty presenting by customer. So now going to discuss about the strategy fallowed by Sainsbury to maintain customer relationship 3. Organization background: Sainsbury is a super market which will operates its business in retail sector from the year 1869. Sainsburys is started by james and Mary Ann Sainsburys. The growth and development of the Sainsbury was increased rapidly and leads to one of the major player in the retailers of UK. It started from single shop and now grown up to 900 retail outlets in the UK. It performs its business operations with 180,000 employees. Sainsburys is the first supermarket which came in market with their own products like soft drinks, food materials and glossaries. It is one of supermarket which provides it services by online and the customer in the store is also given the chance to bill their products. The major competitors of the Sainsbury are TESCO and ASDA. In the part of business, store deals with different range of products for all class of people in the society. Sainsbury maintains good customer relations. Pest Analysis of Sainsbury Political Factors Taxation Sainsbury will get taxed based on their taxation code provided by the governing  bodies of taxation. Salary The employees are paid highly when compared to the other supermarkets.   Working hours They will give only 2 hours per school children and 20 hours for the  people aged above 18. They follow equal employment and wages act and they provide more health and safety to  employees. Economical Factors- Inflation Rates Unemployment Levels Income Labour laws Skill level of work force Social Factors Demographic Trends Level of education Culture living styles Lifestyles and Attitudes Technological factors Online shopping facility Self checkout tills Widespread availability and high speed broadband internet Electronic Data Interchange 4. Rational for the chosen topic: It is decided to research on the above topic, because of academic, personal and business perspectives. In academic carrier, research proposal study is very appropriate subject for course and my future purpose .This research paper is focused strategy fallowed by Sainsbury to maintain customer relationship. In this research paper we will go through the different methods implemented by Sainsbury to gain relation with a customer. In todays global market Customer relationship management (CRM) is one of the important  tactics to gain the relation between consumer and organisation. Customer relationship  management will leads to the enhancement of popularity of the organization in the global  market. In todays market many of the organisations are implementing this customer  relationship management because customer is the centre point at every business. From the  past records organisation came to single opinion i.e. which organisation has good relation  with it customer will survive for long period in the market. 5. Literature review: According to (Mike Hoots), Customer relationship management is implemented by most of  organizations to know the potential customers of their business and their requirements  expecting from organization side. The organization position in the global market may defined by the customer relations and  their satisfaction. In todays scenarios customer is the king and he is one and only option for  generating the revenue to the business. Customer plays a key role in almost of all the  industries which are service and manufacturing. The organization which is having good  customer satisfaction and excellent customer relationship will gain the business from the  market and the growth of that particular organization will be more when compared with other  organizations which are giving less priority to customer relationship. 6. Research questions: According to the reviewed literatures, they all mentioned that the important of customer satisfaction programme and in which ways it is gained in an organisation. But they did not discover that how the customer satisfaction programmes and customer satisfaction draws a path to a organisation toward success. Thus, this research proposal proposes to analyse to answer these questions: 1. What are the key activities included into Customer relationship management? 2. What are the customer services provided towards customer satisfaction? 3. To what extent does the Customer relationship management contribute to Sainsbury financial success? 7. Research objectives: Objectives of this research paper are to present the evidence for some of the questions and to  gain theoretical knowledge on whats customer relationship management and its effects on  the business. Find out Sainsburys improvement in customer satisfaction and its relationship with existing customers? What are the best approaches to gain a relationship with a loyalty customer? What are the influences of customer relationship on the Sainsburys business and its  development? What are the important strategies implementing by Sainsbury in customer relationship  management to return to its old market position in the retail sectors? 8. Methodologies: Methodology Exploratory research method chosen for this research paper Exploratory research will present the relationship which is existing between two different  variables. Before starting with exploratory research we shall know about the advantages in  taking this kind of research method and how it is more helpful than the other research  methods. Exploratory defines the relationship between the two distinct factors and it will be more  convenient method for this research. This research method is very flexible for providing a  understanding during the decision problems and opportunities. This research method will  help in grabbing the strategy fallowed by sainsburys for gaining the relationship with the  existing customers and to attract the new customers from the global market Sainsbury and customer relationship management are the two distinct variables in this  research paper. This research will goes on what are the different strategies fallowed by  Sainsbury to maintain good customer relationship. Exploratory research will be comfortable  method to carry this research. Data is gathering from either sides of the organization. Inside of a organisation data is  collected from employees and from the customers of Sainsbury That to data is collected from  the employees who are involved in maintaining customer relationship management. Data is  gathered by introducing myself to the customer and explaining the objective of the project  and later had chat about the satisfaction and impression on the organization. Due to casual chat with customer and enquired by about some important things like cost, quality and services providing and finally collecting the information from employees about the customer number of visits to that particular shop Later i followed the passive style, in which i observed reactions of the customers for the  services providing by the employees in the Sainsburys. This research paper is mainly focused to gain a brief understanding about the customer  behaviour; this study was done more qualitative rather than quantitative research. Qualitative  method was carried based on three types which are mentioned below. Face to face interview Semi-structured interview Passive style Face to face Interview- The face to face interview was done with topic related employees in  the Sainsburys and later conducting a interview to a customer directly. This face to face  interview is also called as In-depth interview. Semi-structured interview this is same as face to face interview but i distributed the pre-questionnaire concerning about the interview. Passive style- Passive style is the process of observing the customers without informing them. The customers are identified secretly when the employees are providing service. Apart from the three methods, fallowed the survey method. In the survey method i went through the secondary data like, company website, news papers  and the articles related to the Sainsbury. In this research paper the data collected through both quantitative and qualitative methods. In  the quantitative method the data is in the form of numbers and which is collected by using the questionnaire. The qualitative data which provides the information in the form of description  which is collected by conducting the interview to customers and the employees of  Sainsburys. This research paper needs a detail study so sample questionnaire is supplied to the existing and new customers of Sainsbury and even collected the information orally by asking about the services provided by Sainsbury. Data collection: When conducting data collection, the un structured interviews will be used with Tescos employees and customers to evaluate customer loyalty programme and investigate the customer perspectives. The data concern with perspectives like thinking, satisfaction and believes. To collect these qualitative data, un structured interviews will be suitable than other methods. Because, we can not have predetermined questions for the perspective which might change for place to place as well as person to person. That is why it is decided to conduct un structured interviews. The data will be collected with selected sample units by asking one or two opening questions and conversations for ten or fifteen minutes. The questions will interact with some matters, for example, why Tesco introduced loyalty card?, why the customer prefer often to shopping in Tesco?, how the customers fell when using loyalty card in Tesco?, what are the other services provided to customer? Is the loyalty programme useful to customer? At the mean time, do Tesco achieve its purposes by that programme? This interview will be conducted once a week for five weeks in the Tesco in London. Every time will choose different areas for research; this is because the answers of customers will vary from place to place. And 3 sample units will be selected to investigate each time. 6. Data Analysis: The collected data from fifteen sample units by interviews, will be analysed to accomplish the objective of research proposal. The obtained qualitative data such as opinions, satisfaction and believes will be analysed to decide that really the customer loyalty programme brings customer satisfaction as well as customer satisfaction brings financial success for Tesco within competitive market in UK. References Alan Bryman Emma Bell,2007, Business Research Methods, second edition, Oxford  University press, UK. Mc Burney White, 2007, Research methods, eighth edition, wadsworth cengage learning,  USA. John gill and Phil Johnson, 1991, Research methods for managers, first edition, paul chapman  publishing ltd, UK. AD Jankowicz,2000, Business Research projects, third edition, Thomson learning, UK. Judith Bell, 2008, Doing your Research project, fourth edition, open university press, MC  Graw hill education. UK. www.sainsburys.co.uk, 2010, Sainsbury company overview, (Online), Available from URL   http://www.j-sainsbury.co.uk/index.asp?pageid=12, Accessed on 27th -03-2010. www2.sainsburys.co.uk, 2010, customer and marketing, (Online), Available from URL-  http://www2.sainsburys.co.uk/aboutus/recruitment/Store+Support+Centre/Custo mer+and+Marketing/Customer+and+Marketing+Overview.htm, Accessed on 01-04-2010.a www.thisislondon.co.uk, 2008, Sainsbury defies the City with yet more sales growth,  (Online), Available from URL-http://www.thisislondon.co.uk/standard- business/article-23496207-sainsbury-defies-the-city-with-yet-more-sales-growth.do, Accessed on 02-04-2010. www.oppapers.com, 2010, Customer relationship management, (Online), Available from  URL-http://w ww .oppapers .com/es s ays /Cus tomer- R elationship-Management/189988, Accessed on 07-04-2010. www.rgis.com, 2010, Sainsbury overview, (Online), Available from URL-  http://www.rgis.com/assets/pdfs/casestudies/Sainsbury_Case_Study.pdf, accessed  on 09th-04-2010. Corporate Strategy: Financial Strategy and Cultural Effects Corporate Strategy: Financial Strategy and Cultural Effects Introduction The objectives of this paper are two-fold: first, the paper looks at the role of financial strategy in an organisation, the risks faced by an entity and how these risks affect the financial strategy; second, the paper provides a discussion in relation to whether cultural factors have an impact on corporate strategy, as well as whether it is beneficial for an organisation to be ethical. The paper begins by looking at financial strategy and organisational risks. It will later consider cultural and ethical issues. The role of financial Strategy in an Organisation. Financial strategy can be defined as the practices adopted by a firm to achieve its financial objectives. (Harvey, 2004). According to Calandro and Flynn (2007) â€Å"financial strategy can be defined as an interdisciplinary methodology to more efficiently allocate resources within a firm to better or more economically satisfy customer preferences over time†. The later definition stresses the need for customer satisfaction indicating that shareholder value creation depends on customer satisfaction. Although an organisation’s overall objective is shareholder value maximisation, it can only achieve this through high levels of customer satisfaction because it is only through high levels of sales that profit can be generated and high levels of sales can only be achieved through high levels of customer satisfaction. The main financial objective of a profit-making entity is to maximise shareholder value. (Ogilvie, 2005). Shareholder value is measured by the returns shareholders receive each year, represented by the dividend received each year, plus the capital gains from capital appreciation, which is measured by the growth in the share price of the entity. In addition to maximising shareholder value an organisation may have other objectives such as satisfactory returns, high sales levels, high level of customer satisfaction, etc. (Ogilivie, 2005; Calandro and Flynn, 2007). Kaplan and Norton (1996) identify three different stages for a business and note that each of these stages has its own unique financial objectives. The three stages include: (1) rapid growth; (2) sustain; and (3) harvest. (Kaplan and Norton, 1996). At the rapid growth phase the financial objective will be to achieve sales growth, achieve sales in new markets and to new customers, achieve sales from new products and services, maintain adequate spending level for product and process development, establish new marketing, sales and distribution channels. At the sustain phase the organisation will emphasize traditional financial performance measurements, such as return on capital employed, operating income and gross margin. Standard discounted cash flows and capital budgeting analysis will be used to appraise investments although some companies may emphasise the use of more recent appraisal techniques such as economic value added and shareholder value added. At the harvest phase, the main financial objective will be to achieve sustainable levels of cash inflows, in which case any investment project must have immediate and certain cash paybacks. (Kaplan and Norton, 1996). Financial strategy constitutes three main stages, which are temporarily linked in a financial feedback loop as shown in figure 1 below. These stages include: (1) strategy formulation; (2) resource allocation; and (3) performance measurement. An important aspect of strategy formulation is strategic planning, which according to Myers (1984) involves the process of deciding how to commit the firm’s resources across different lines of business. Based on the above discussion, one can observe that financial strategy plays an important role in an organisation. It enables the organisation to formulate its strategy, determine how to allocate its resources and enables the company to measure its performance. Financial strategy enables an entity to make an assessment of its financial needs, the sources of support required to meet its objectives and fulfil its mission while at the same time planning for growth and stability. Financial strategy is an indispensible prerequisite for the formulation and development of the budget. Organisations often face a number of risks. These include liquidity risks, interest rate risk, business risks, financial risks, etc. these risks may affect the financial strategy in a number of ways. Financial risk for example is the risk that the company may be unable to meet its commitments to repay interests and principal repayments on its long-term financial obligations. The effect of such a risk on the financial strategy is that the company will emphasise the use of internally generated funds and equity to finance long-term projects rather than issue bonds or other long-term debt securities. Interest rate risk may also affect the firm’s capital structure decision in that perceived high levels of interest rates on long-term debt may reduce the company’s motivation to use debt financing. Foreign exchange rate risk may affect the company’s prospects to expand production abroad, as well as the currency denomination of foreign contracts and sales. Liquidity risks may affect the company’s short-term borrowing. The presence of high liquidity risk may warrant the company to resort to a just-in-time inventory system, reduce short-term debtors by maintaining more strict short-term credit policies and factoring of accounts receivables. Effect of Cultural Factors on Corporate Strategy Andrews (1997: p. 52) defines corporate strategy as â€Å"the pattern of decisions in a company that determines and reveals its objectives, purposes, or goals, produces the principal policies and plans for achieving those goals, and defines the range of business the company is to pursue, the kind of economic and human organisation it is or intends to be and the nature of the economic and non-economic contribution it intends to make to its shareholders, employees, customers, and communities†. Corporate strategy in effect maps out the businesses in which an organisation intends to compete in a way that focuses resources to convert distinctive capabilities into competitive advantage. (Andrews, 1997). The definition of corporate strategies emphasises the need for the organisation to satisfy the needs of all the stakeholders if the organisation is to achieve is overall objective of maximising shareholder value. Stakeholders include employees, customers and the communities in which the organisation operates. Employees, customers and communities therefore have a significant impact on the success of the organisation and thus on the corporate strategy of the organisation. In formulating corporate strategy, organisations need to identify and priorities strategic issues, which involves scanning, selecting, interpreting and validating information. (Schneider, 1989) To properly formulate its corporate strategy, an organisation must assess its organisational strengths and weaknesses, as well as its environmental threats and opportunities, which will enable it choose among alternative courses of action. (Hofer and Schendel, 1984) cited in Schneider, (1998). This indicates that an organisation must perform a SWOT (strengths, weaknesses, opportunities and threats) analysis prior to formulating corporate strategy. A number of factors have been identified as having an effect on corporate strategy formulation: for example, Kets de Vries and Miller (1984) suggest that managerial personality and experience is an important determinant of the strategy formulation process; Janis (1972) considers group dynamics as an important factor affecting the formulation of corporate strategy while Frederickson (1984); Lyles and Mitroff (1985) suggest that organisational structure plays an important role in strategy formulation. Schneider (1998) citing Schein (1985) notes that National culture could play an important role in strategy formulation as it derives from assumptions regarding relationships with the environment as well as relationships among people. Schneider (1998) argues that these assumptions will influence how information is gathered and how that information is interpreted within the organization. The strategy formulation process can therefore not be considered ‘culture-free’ because information is embedded in social norms and acquires symbolic value as a function of a particular set of beliefs in a particular set of cultures. (Feldman and March, 1981). There are considerable differences in cultures across countries. Culture is defined as â€Å"a system of shared assumptions that has developed over time to solve problems of environmental adaptation and internal integration†. (Schneider,, 1998: p. 152) citing Schein (1985); Van Maanen and Barley (1983). Culture is expected to affect the process by which the environment is known and responded to because it is thought to influence the way people perceive, think, feel and evaluate. (Schneider,, 1998). There are two sets of cultural assumptions that are thought to be specifically relevant to the formulation of corporate strategy. These include external adaptation and internal integration. (Schneider, 1998). On the one hand, external adaptation refers to the relationship with the environment while internal integration on the other hand refers to the relationships among people. The forgoing indicates that cultural factors have a significant effect on corporate strategy and thus calls for a critical consideration of cultural differences especially for multinational companies that usually operate in a number of different countries with varying degrees of culture. A company therefore stands to gain a lot from being ethical. Companies that are perceived as being unethical may suffer from declining sales and thus declining profit margins. There are also differences as far as ethical issues are concerned. What may be considered unethical in one country may be considered ethical in another country. For example, Muslim communities do not eat pork meat and thus will consider a company that attempts to market pork related products as contravening their cultural believes. In addition there are considerable differences in relation to organisational hierarchy across countries. In countries where power distance is considered very important, information is likely to flow only from top to bottom and not from bottom to top. In addition, an autocratic form of leadership is likely to prevail in such societies. On the contrary, in a country where power distance is considered less important, there would be a two way flow of information and a democratic leadership style is likely to prevail. For example, Motorola faced a number of problems when it expanded its activities to South Korea. (Siegal et al., 2007). In like manner IKEA, the giant furniture dealer faced difficulties when it expanded its activities into the United States. (Grol et al., 1998). BIBLIOGRAPHY Andrews K. (1997). Resources and Strategy: A Reader, edited by Nicolai J. Foss. Oxford University Press, ISBN 0198781792, 9780198781790 Calandro, J. Jr., Flynn, R. (2007). â€Å"On Financial Strategy†, Business Strategy Series, vol. 8, No. 6, pp. 409-417. Harvey G. (2004) â€Å"Financial strategy† available online at: http://financial-dictionary.thefreedictionary.com/Financial+strategy Grol, PC, Schoch, C, CPA. (1998). IKEA: managing cultural diversity. In Cases in International Organizational Behavior. Oddou G, Mendenhall M (eds.). Blackwell: Malden MA; 88-112. Janis, I. L. (1972) â€Å"Victims of groupthink†, Boston: Houghton-Mifflin. Kaplan, R. S., Norton, D. P. (1996), â€Å"Linking the Balanced Scorecard to Strategy†, California Management Review, vol. 39, No. 1, pp. 53-79. Feldman, M. S., and J. G. March (1981) â€Å"Information in organizations as signal and symbol†, Administrative Science Quarterly, vol. 26, pp. 171-186. Fredrickson, J. W. (1984) â€Å"The comprehensive of strategic decision processes: extension, observations, future directions†, Academy of Management Journal, vol. 27, No. 3, pp. 445-466. Kets de Vries, M. F. R., and D. Miller (1984) â€Å"The neurotic organization†. San Francisco : Jossey Bass. Lyles, M. A., and I. I. Mitroff (1980) â€Å"Organizational problem formulation:  an empirical study†. Administrative Science Quarterly, vol. 25, pp. 102-119. Myers, S. C. (1984). â€Å"Finance theory and financial strategy†, INTERFACES, vol. 14 No. 1 pp. 126-137 Ogilvie, J. (2005). Financial Strategy, Butterworth-Heinemann ISBN 0750664894, 9780750664899 Schneider S. C. (1989), â€Å"Strategy Formulation: The Impact of National Culture†, Organization Studies, vol. 10, pp. 149-168. Siegel, J. I., Licht, A. N., Schwartz S H. (2007). Egalitarianism, Cultural Distance, and FDI: A New Approach available at: http://ssrn.com/abstract=957306

Ann rule- Dead At sunset Essay -- essays research papers

This book is just one account of what took place on that fatal September 21, 1986 night. It was a warm and beautiful Sunday night on the Sunset High way in Oregon when Cheryl Keeton was brutally bludgeoned body was found in her van, in the fast lane by a motorist, Randall Kelly Blighton who just stopped to see if he could offer any type of help.   Ã‚  Ã‚  Ã‚  Ã‚   Randall Blighton saw a silhouette of an infant in the vans window which now he says was a car seat. He felt that he couldn’t just pass by after he had just dropped off his own children with their mother. When he first arrived by the van he set out flares to make sure that everybody knew that the van was there. He then went to open the drivers side door and found that a woman’s purse was jammed between the accelerator and the firewall, that would explain the continually motion forward. He could see that a figure was lying across the front seat and that the head was tucked into the chest just over the passenger seat. He could see that the figure had on one loafer type on one foot that looked feminine. As he searched to turn on the emergency flashers and was unable to find them, not knowing that they were over head. He felt the floor to see if there was a baby. However, as he felt around he realized that the floor and seats of the van and realized why it was so hard to see through the drivers side window that was splattered with something dark, blood. Nevertheless, he felt it was more important to keep searching to find the baby instead of stopping. He shuddered and didn’t get how there could be so much blood in the van if it hadn’t been hit by another vehicle. Randall then hopped in the drivers seat and moved the van on to the shoulder of 79th where it met sunset highway. Mr. Blighton then ran to the passenger side door, which was slightly open to see if the woman had a pulse when he could not feel one he then ran to get help. He finally came to a house and told them to call for help. Thomas Stewart Duffy Jr was on duty that night at Washington County Fire District Number One. The call came in roughly at 8:44 that night. They had many calls come in from the sunset highway and most proved fatal. They arrived to see the blue Toyota van parked facing north along 79th . The man was covered in dark spots and they weren’t sure just what they were getting into. When they arrived at the woman ... ...s fear. Brad later left the house and it was a mess Sara was unsure if he was ever to return and went to the house with a realtor only to find the locks and high tech security system had been changed. Did you know?  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  This would be the second case to be tried in civil court for a murder with no weapons just circumstantial evidence.  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Cheryl Keeton could see that Brad would kill her and was warned by many close friends never to be alone with him but felt she had to go and get her children back that fatal Sunday night.  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Brad Cunningham grew up in a divorced household where he was not wanted by his father and was never to see his mother or have any contact with her. After she had an affair with a Hispanic man and was caring his child.  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  He had a brother that never was able to have a relationship with a woman.  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Been married 4 times before Sara, seemed not to marry for love but for control and to get what ever he wanted. Eight years after killing his divorced wife in Portland, Oregon, Brad Cunningham was finally convicted of her murder

The Unification of Greece :: Ancient History, Bronze Age, Greek

During the Bronze Age, the Minoan civilization; situated on the cultural bridge Island of Crete, greatly influenced the Aegean Islands as well as the Greece mainland (75). Though they were not Greeks, the Minoans kept detail records in a form of Greek. These peoples were ruled by a King who was supported by a bureaucracy and centered on a palace (75). This form of organization was typical of many early civilizations but changed tremendously after this age (75). After the Minoans, the Mycenaeans arose and ruled in a similar fashion to the Minoans. The Mycenaeans; though also non-Greek, settled in the Greek mainland and was ruled by a King who held a royal domain, was given the ability to appoint officials, and to command servants among other responsibilities (77). After the fall of the Mycenaean empire, many Greek peoples spread eastward, ended trade with the old civilizations, and internally throughout parts of Greece (78). This period led Greek peoples to move into smaller communit ies with little communication between them (78). The initial organization of the Minoan and Mycenaean civilizations were as close to unification as Greek history allowed until the Macedonians arrived. However, these successful civilizations were not Greek but situated themselves on what became Greece and merely demonstrated a slight similarity in language. After the fall of the Mycenaean civilization, Greeks entered though disorganized and independent. The appearance of the polis united Greek-speaking people though its initial use was not for such. The Greek poleis was a community of relatives who worshipped gods in ceremonies and formed republics dominated by the nobility through its councils of nobles and eventually distinguished monarchy (80-81). These poleis allowed Greek’s social life to grow and expand their territories tremendously (81-82). This expansion provided Greeks with a cultural identity and gave men outside the nobility an opportunity to become wealthy (82). This new class, however, also led to conflict and tyranny arose (82). The tyrants contributed most in that they eliminated the presence of the aristocracy leaving each citizen to prove their worth by their service of the polis (84). Throughout this period, tyrants ruled their individual city-states, and allied themselves with other allies to prevent war (84). After the end of the dark ages, Polytheism arose as a central religion connecting Greek peoples (85). During this age, the polis was still apparent though differed tremendously between different states (87). Sparta and Athens, though powerful and influential Greek states were among these poleis and though they were perhaps, the most likely of the states to unite Greece both were unfit.

Lessons Learned in Kate O’Brien’s Land of Spices Essay -- Land Spices

Lessons Learned in Kate O’Brien’s Land of Spices Kate O’Brien’s Land of Spices is a good read especially if the bookworm is from a catholic school upbringing. The story’s contents complete with the antics of the girls and the lack of patience in the sisters is recognizable from memories drawn on similar events. The nuns’ softer emotions were hidden away from the students and only their hard-heartedness evident in the school’s classrooms. In sixth grade during the fall of 1963 after President Kennedy was shot and killed in Dallas, Texas, a Dominican sister was seen at school with tears in her eyes. At this moment the realization descended upon the enrolled that there was flesh and blood under that habit and not an alien being. O’Brien addresses Catholicism, homosexuality and love in her novel with creativity and realism for the times. On a negative note, the liberal use of the French language is a reminder that this book was written with the rich and cultured person in mind and become s aggravating to this unenlightened one. In reading the excerpt from The Land of Spices by Kate O’Brien contained in â€Å"The Penguin Book of Irish Literature†, this reader is at once aware of the descriptive words with which Helen (the eventual Reverend Mother of the novel) depicts her father, Henry Archer. She presents him in the passage as a man who is â€Å"very beautiful†¦different from other men†¦with curly, silky hair and eyes that shone like stars† and goes on further to say that â€Å"his face grew more beautiful as one drew nearer to it†. 1[1] Perhaps, this feminine portrayal is a less than subtle hint into Henry Archer’s being for in revealing him as a man with a feminine countenance and inevitably finding him locked in a loving embrace... ...ontrol to temperance to love. Despite the rocky relationship between Helen and her father she inadvertently learned patience from him as he continues to love her despite her attitude and she in turn awaits Anna’s realization of her interest and love. Helen and Anna learn temperance in their everyday dealings with Mother Mary Andrew. The greatest lessons are those of dedication and commitment as Helen in the role of Reverend Mother becomes the best nun she can be despite a decision made under duress. Notes: [1] From The Penguin Book of Irish Fiction p. 475. [2] From The Penguin Book of Irish Fiction p. 475. [3] From The Penguin Book of Irish Literature p.485. [4] O’Brien, Kate. The Land of Spices, p.20. [5] O’Brien, Kate. The Land of Spices, p.252. [6] O’Brien, Kate. The Land of Spices, p104. [7] O’Brien, Kate. The Land of Spices, p. 110.

Black Power Movement Essay

The movement for Black Power in the U.S. emerged from the civil rights movement in the early 1960s. Beginning in 1959, Robert F. Willams, president of the Monroe, North Carolina chapter of the NAACP, openly questioned the ideology of nonviolence and its domination of the movement’s strategy. Williams was supported by prominent leaders such as Ella Baker and James Forman, and opposed by others, such as Roy Wilkins(the national NAACP chairman) and Martin Luther King.[10] In 1961, Maya Angelou, Leroi Jones, and Mae Mallory led a riotous (and widely-covered) demonstration at the United Nations to protest the assassination of Patrice Lumumba.[11][12] Malcolm X, national representative of the Nation of Islam, also launched an extended critique of nonviolence and integrationism at this time. After seeing the increasing militancy of blacks in the wake of the 16th Street Baptist Church bombing, and wearying of the domination of Elijah Muhammed over the Nation of Islam, Malcolm left that organization and engaged with the mainstream of the Civil Rights Movement. Malcolm was now open to voluntary integration as a long-term goal, but still supported armed self-defense, self-reliance, and black nationalism; he became a simultaneous spokesman for the militant wing of the Civil Rights Movement and the non-separatist wing of the Black Power movement. An early manifestation of Black Power in popular culture was the performances given by Nina Simone at Carnegie Hall in March 1964, and the album In Concert which resulted from them. Simone mocked liberal nonviolence (â€Å"Go Limp†), and took a vengeful position toward white racists (â€Å"Mississippi Goddamn† and her adaptation of â€Å"Pirate Jenny†). Historian Ruth Feldstein writes that, â€Å"Contrary to the neat historical trajectories which suggest that black power came late in the decade and only after the ‘successes’ of earlier efforts, Simone’s album makes clear that black power perspectives were already taking shape and circulating widely†¦in the early 1960s.† By 1966, most of SNCC’s field staff, among them Stokely Carmichael (later Kwame Ture), were becoming critical of the nonviolent approach to confronting racism and inequality—articulated and promoted by Martin Luther King, Jr., Roy Wilkins, and other moderates—and rejected desegregation as a  primary objective. SNCC’s base of support was generally younger and more working-class than that of the other â€Å"Big Five†[14] civil rights organizations and became increasingly more militant and outspoken over time. From SNCC’s point of view, racist people had no qualms about the use of violence against black people in the U.S. who would not â€Å"stay in their place,† and â€Å"accommodationist† civil rights strategies had failed to secure sufficient concessions for black people.[citation needed] As a result, as the Civil Rights Movement progressed, increasingly radical, more militant voices came to the fore to aggressively challenge white hegemony. Increasing numbers of black youth, particularly, rejected their elders’ moderate path of cooperation, racial integration and assimilation. They rejected the notion of appealing to the public’s conscience and religious creeds and took the tack articulated by another black activist more than a century befo re, abolitionist Frederick Douglass, who wrote: Those who profess to favor freedom, and yet depreciate agitation, are men who want crops without plowing up the ground. They want rain without thunder and lightning. They want the ocean without the awful roar of its many waters. †¦Power concedes nothing without demand. It never did and it never will. Most early 1960s civil rights leaders did not believe in physically violent retaliation. However, much of the African-American rank-and-file, and those leaders with strong working-class ties, tended to compliment nonviolent action with armed self-defense. For instance, prominent nonviolent activist Fred Shuttlesworth of the Southern Christian Leadership Conference (and a leader of the 1963 Birmingham campaign), had worked closely with an armed defense group that was led by Colonel Stone Johnson. As Alabama historian Frye Gaillard writes, †¦these were the kind of men Fred Shuttlesworth admired, a mirror of the toughness he aspired to himself†¦They went armed [during the Freedom Rides], for it was one of the realities of the civil rights movement that however nonviolent it may have been at its heart, there was always a current of ‘any means necessary,’ as the black power advocates would say later on. During the March Against Fear, there was a division between those aligned with Martin Luther King, Jr. and those aligned with Carmichael, marked by their respective slogans, â€Å"Freedom Now† and â€Å"Black Power.† While King never endorsed the slogan, his rhetoric sometimes came close to it. In his 1967 book Where Do We Go From Here?, King wrote that â€Å"power is not the white man’s birthright; it will not be legislated for us and delivered in neat government packages.†

Atomic bomb in Hiroshima Essay

The 6th of August 1945 was a day that people will always remember with terror. On this day, an atomic bomb was used by the U.S. against Japan, in the city of Hiroshima. This was the first time in world history. Before this sad event, Japan and the U.S. were having conflicts with each other because Japan tried to invade parts of Europe and the Pacific. In an attempt stop Japanese aggressions, the U.S. decided to stop the sale of war materials, such as iron and oil, to Japan. This angered the Japanese, and after peacetalks failed, the Japanese made a surprise attack on Pearl Harbor. After this attack, the U.S. declared war on Japan. The two nations fought until after both Atom bombs were dropped (Ellis, 381-382). Through the orders of U.S. President Harry Truman, 13 sq. km were deserted, 70, 000 of 76, 000 buildings were destroyed, more than 70, 000 people were instantly killed, 122, 000 died later, due to the effects of the bombings, and 246, 000 more were severely injured (Sà ¶hr, 2 ). In this essay I want to explain why I would not have bombed Hiroshima like Harry Truman did, although there might have been several reasons to justify his decision. Trumans main reason for dropping the bomb was that it was necessary to stop the war, since the only other way would have been an invasion of Japan which ,as he believed, would have caused an immense loss of lives on both sides. I believe it was not necessary, since war was already won in Europe, and the U.S. could now focus entirely on the war in the Pacific (Ellis, 381-382). The Japanese would have to surrender sooner or later anyway because the economy and military were totally destroyed, and there was no navy .The US had also set up a blockade that would prevent Japan from receiving any supporting materials, and the air force , or the remainder that still existed, was not able to fight the US-bombers (Sternal, 2). Therefore, there was no possibility for the Japanese to win or continue the war over a long period of time. Because the battle of Guadalcanal showed Truman that the Japanese were not going to surrender easily and would fight to their deaths, he claimed that  the bombing was justified by declaring that the bomb would save more lives than lost by a US invasion of Japan (Long, 2). This statement is only an assumption because nobody knew what the bombs effects were, since this was the first time somebody used it on humans. Another reason why this argument doesn’t justify Trumans decision is because he could not have known how many people would have died due to the fact that there never had been an invasion of Japan yet. Even if he could have known how many people would have died, I seriously doubt that he knew how many people the bomb would have killed as well, again, because this was the first usage of the weapon. Thirdly, even though the Japanese didn’t seem willing to surrender, there were several organisations who promised Japan would surrender if it be guaranteed that the nation should remain with the emperor as the main ruler. The US did not respond to this, but instead made the Potsdamer Declaration , which demanded instant unconditional surrender from Japan. At first the Japanese didn’t react, but on August 10th 1945, the government accepted the declaration and was willing to give in, when the US suddenly decided to accept the demands of the peacefighters in Japan. Through the acception of their demands, the Japanese peace fighters had a good reason to end the war (Long 2), following there was no need to throw the bomb and kill all the people. Another reason why the US dropped the bomb, which is often not mentioned because it displays the US in a â€Å"bad light†, is due to imperial rivalries. Although this attack had no influence on the further development of the war, except that the Japanese surrendered, (which they would have done anyway), it was very significant to the political development of the U.S.. The new weapon showed its main rival, the USSR, that the US had indirectly â€Å"won† the war, and also displayed the new power of the atom bomb. It’s hard to believe that it was a coincidence that the bomb was dropped when Stalin decided to get involved with Japan (Sà ¶hr, 2). Through this the US wanted to make clear to Russia that they were capable of defending their spheres of influence effectively. I think that the US was visioning Russia as a enemy rather than a ally. Truman described the war goals of the US as, â€Å"If we see that Germany  is winning, we should support Russia, but if Russia is winning we should support Germany and through this make them kill each other as much as possible†¦Ã¢â‚¬  (Sà ¶hr, 4). This does not only show that Truman didn’t care if Russia or Germany won, but was only interested in how the US benefited the most, which isn’t necessarily bad, but since the U.S. and Russia were suppose to be allies, America should have supported them instead of fighting against them. The US benefited from the atom bomb because now everybody, especially the USSR, knew how powerful they were. After the dropping of the atom bomb, Truman said the following, â€Å"Having found the bomb we have used it. We have used it against those who attacked us without warning at Pearl Harbor, against those who have starved and beaten and executed American prisoners at war, against those who have abandoned all pretense of obeying international laws of welfare†¦Ã¢â‚¬  ( Hiroshima: Was it necessary? 2). In this speech Truman lies. You can not forget that almost all the people in Hiroshima killed and injured by the bomb were civilians and definitely did not fit to his description. The Japanese attack on Pearl Harbor might have been a surprise, but was not intended to hurt civilians. And again, it was the first time the atom bomb was used, so nobody was informed about the consequences and the Japanese weren’t even warned that they were being used for the first â€Å"mission† of the atom bomb. Since all the above evidence shows me that the decision of President Harry Truman was a mistake, I think it is very sad that not one president has apologized to Japan yet. I believe the bomb was an act of revenge on Japan, rather than an act of necessity, done upon innocent civilians who had nothing to do with the war, but were merely used as â€Å"testing-objects.† The 6th of August 1945, also showed me that nations are able to use atomic weapons to display their power, and it can happen again. What makes the decision wrong, and the main reason why I would have decided differently, was the fact that the bomb was dropped over a city full of innocent people,  who were neither responsible for the actions of the government nor could they influence the treatment of soldiers in prison.

Solder Joint In Electronic Engineering Essay

Electronic makers throughout the universe have a long history of utilizing lead-based solders. These solders have proven to be cost effectual and high reliable, and are solidly integrated into fabricating methods and procedures. Driven by statute law chiefly in the European Union i.e. WEE, RoHS, EEE Directives, makers are concrete the manner for taking lead solder from all electronics assemblies. However, the credence of nonleaded solder posses many draw dorsums. Conversion to RoHS ( Restriction of Hazardous Substance ) compliant parts must include the full merchandise development and fabrication procedure. To electronics makers, one of the most of import facets in the procedure is guaranting the nonleaded solder articulation dependability is equal to or greater than that of their current leaded solder composings. Manufacturers are working independently to formalize dependability for their nonleaded electronic constituents and systems. Likewise, industry organisations and other research workers have developed proof plans that attempt to understand failure mechanism associated with nonleaded merchandises, generate dependability acceleration theoretical accounts, and predict the dependability of nonleaded solder articulations. Several theoretical accounts of lead free solder articulation dependability non mature plenty yet to enable alone demand of aerospace and military intent. Several factors affect solder articulation dependability, i.e. portion geometry, solder drosss, and external environmental emphasiss. Rapid thermic cycling has been an effectual environmental stimulation capable of bring oning weariness on solder articulations, peculiarly with stuffs holding mismatched thermic enlargement coefficients. Mechanically induced quiver is another external emphasis that efficaciously evaluates solder joint dependability. Thermal cycling can bring forth high supplanting emphasiss at low rhythm frequences, whereas mechanical quiver can supply low supplanting emphasiss at high frequences and high rhythm counts. A peculiar type of trial equipment and methodological analysis capable of using a combination of rapid thermic cycling and quiver is Highly Accelerated Life Testing ( HALT ) . Circuit boards range from simple individual moulded plastic boards with Cu music directors on one or both sides to multilayer boards with Cu music directors, each bed being separated by a insulator and interconnected by metal music directors. Minimum line breadth and spacing between lines is less than 100 A µm. The board typically is made from a composite such as an epoxy with superimposed sheets of woven fiberglass. The dielectric stuff between beds of music directors is normally a polymer, for illustration polyimide. To keep solder ability, the exposed Cu may be coated with an inhibitor such as benzotriazole or with a solder greatcoat. Components are attached to the board with solder or metal-filled conductive adhesives. Fully assembled boards may be farther protected against wet, taint, and mechanical harm by a screen coat. ( Steinberg D,1988 )1.2 SOLDER JOINT RELIABILITY AND FAILURESolder articulations widely used in the electronic packaging industry to bring forth good electri cal, thermic, and mechanical connexions between the bundle and the printed circuit board. Twenty per centums of the mechanical failure in airborne and mechanization electronic cause by quiver and daze. Design appropriate step to guarantee the survival equipment in the daze and quiver environment is necessary to make so. Staying 80 per centum of mechanical failure related to thermic emphasiss ensuing from high thermic gradients, coefficient of thermic enlargement and high coefficient of snap. Solder joint failure occurs in several grounds: Poor design of the solder articulation A bad solder articulation intervention Solder stuff Excessive emphasis applied to solder articulations. In general, nevertheless, the solder articulation failures are merely graded harmonizing to the nature of emphasis that have caused. Most joint failure falls into three major classs: Fatigue failure due to cyclic emphasis application Due to the execution of a long term or lasting burden The emphasis is due to overloading in the short term Reflow profile besides has a important function on solder articulation reliablity. Because It besides has a high influence micro construction of the solder articulation. Vibration failure of solder articulations is assessed for dependability utilizing high accelerated life trial, which is represented by a GRMS- clip curve. For surface saddle horse microelectronic constituents, an estimate of printed circuit board ( PCB ) theoretical account analysis can be made by presuming PCB as a bare unpeopled thin home base because the addition in stiffness of PCB due to the climb of the constituents is about offset by the addition in entire mass of the populated PCB. However, this estimation can direct to mistakes in natural frequence computation for different bundle profiles, for flip-chip-on-board ( FCOB ) and plastic-ball-grid-array ( PBGA ) assemblies. When the constituent has little profile, the estimate of PCB assembly as a bare PCB can supply acceptable average analysis consequences because the stiffness and mass part of little constituent to PCB assembly is non considerable. In this trial, changing GRMS-level random quiver trial for PCB assemblies were conducted. In order to cipher the dependability of PCB assembly, it is necessary to carry on the dynamic analysis.1.3 PROJECT PURPOSEIn this modern universe due to the causes of wellness and environmental issues the electronic fabrication industries confronting a challenging job of necessity to bring forth dependable solder merchandises in really high denseness with really low cost. Solder articulations are really of import to the dependability of Printed Circuit Boards ( PCB ) . This is a 1 of the taking factor in transmittal of electrical and thermic connexions. In instance of every PCB even a smaller solder articulations are really of import. So this undertaking investigates the Effect of quiver on solder articulation dependability in electronics assembly applications. Solder articulation of an electronic assembly is really of import measuring because of this theoretical account based survey might assist applied scientists efficaciously better the PCB mechanical design and therefore better dependability of electronics attached to the PCB by sing practical uncertainnesss and inauspicious quiver environments. This experiment attempted to research the usage of HALT to measure the dependability of solder articulations. For this trial, samples of PCB ‘s arranged and tested on an Environmental testing chamber. The trial program included a response where, as samples become displaced from the printed circuit board ( PCB ) , . In add-on, a solder joint life distribution would be bring forthing depicting comparative public presentation between Sn95.5/Ag4.0/Cu0.5 vs. Sn42Bi57Ag1 solder paste. The consequence of this trial did non bring forth the sequence of failures necessary to be after the life informations ; nevertheless the procedure of proving revealed near by into the application of HALT as a technique to contrast the public presentation of PCB soldered constituents. ( Steinberg D,1988 ) The overall research methodological analysis that has been followed during the undertaking is illustrated in Figure 1.1. There are six distinguishable stairss: Literature Survey, Project Planning, Design of Experiments, Experimental work, Analysis of consequence and Conclusion, and Documentation and Presentation. Literature Survey Design of Experiments Undertaking planning Experimental Work Analysis of Results and Conclusion Documentation and Presentation Figure 1.1: Undertaking MethodologyChapter 2LITERATURE REVIEW2.1 SINUSOIDAL VIBRATION TESTINGDynamic warps of stuffs caused by quiver can do jobs and malfunctions including failed electrical constituents, deformed seals, optical and mechanical misalignment, cracked or broken constructions, inordinate electrical noise, electrical trunkss, chafed wiring. Because sine quiver represent largely a certain cardinal frequence and the harmonics of that cardinal, in its pure province, this type of quiver is generated by a limited important figure of beginnings. Expressed as amplitude versus frequence, sine quiver is the type of quiver generated in the field by beginnings such as engine rotational velocities, propellor and turbine blade transition frequences, rotor blade transition and launch vehicles. While much of â€Å" existent universe † quiver is random, sine quiver proving accomplishes several of import ends in merchandise ability and proving. Much stuff and completed merchandise was modelled on some type of sine quiver signature. A sine expanse of frequences will reason whether the premises were right and if the divergences are considerable plenty to do design alterations. In other words, expanse will set up if the imagined frequence has been met and/or discovers the trial point cardinal frequence. Similarly, a expanse will assist place the trial capable resonance frequences, which may be the points at which the point experiences peculiarly nerve-racking warps. Some of the undermentioned trials include fixed frequence at higher degrees of the commanding variable ( displacement, speed, acceleration ) , and random quiver. Another typical sinusoidal quiver trial, sine explosion such as the teardrop, goes quickly to top out pulsation and so decays at lower rate ( to forestall harm to the unit ) . The burst trial puts a maximal burden into an object at a rapid rate and peculiarly emphasiss articulations and seams to place craft and design issues.2.2 RANDOM VIBRATION TESTINGThe genuineness of random quivers an effectual tool of testing craft defects came about during fabrication. Up until that limited hertz sine was applied during dependability proving. Pure sinusoidal quiver is composed of a individual frequence at any given clip. Comparisons trials revealed that to be the effectivity of random quiver. The trial point will hold to be subjected to many sine frequences over a longer period of clip, and may by happenstance weariness the trial point. Random quivers undercover defect faster. Another fluctuation would be a swept sine on random trial. In random quiver nevertheless, all frequences happening at the same time. Because of this, random quiver analysis normally performed over a big scope of frequences, say from 20Hz to 2000Hz. Research workers are non looking at a specific frequence, specific minute in clip or specific anything else ; They are statistically looking at a construction response to a given random quiver environment. Decidedly be cognizant about any natural frequences that cause a big random response at any open frequence degree, but largely all the experiments taking the overall response of the construction. Random quiver analysis looks at random accelerations or forces over a scope of frequences, which we call the frequence sphere. ( These random inputs are merely sustained over a period of clip, but are non time-dependent ; i.e. , the longer the period of clip, the better the statistical sampling in the frequence sphere. ) The scope of frequences is called a spectrum. Therefore, this is called by Spectral Density. Normally, if accelerations consider in trial, for that Acceleration Spectral Density ( ASD ) have to utilize.2.3 SINE ON RANDOM VIBRATION TESTINGVibration sine on random testing is executing by superposing a sine moving ridge on top of a random environment. A sine on random quiver trial replaces the combined environment of a spinning chopper blade with its distinguishable resonant degrees and the remainder of the aircraft which generates random engine and aerodynamic induced quiver. Gunfire on board an aircraft causes sine quiver while the remainder of the aircraft generates random excitements. These types of trials are doubling quiver Characterized by dominant extremums ( sinusoids ) superimposed on a broadband background. 2.4 Real WORLD SIMULATION. Most quiver in existent universe is random for illustration a vehicle traveling over route feels random quiver from the route abnormalities. Land launched projectile vehicles exposed to non stationary quiver during its flight, the motor ignites the projectile travel through the ambiance, the motor burn terminals and so forth even in flying when subjected to turbulent air flow, undergoes random quiver. Random quiver is composed of battalion of continues spectrum of frequences. Movement varies indiscriminately with clip. It can be accessible in the sphere by a power spectral denseness map [ G2/Hz ] .2.5 HIGHLY-ACCELERATED LIFE TESTING ( HALT )HALT involve quiver proving in all three axes with a random manner of frequences. at last, HALT proving can include the real-time cycling of multiple environmental variables, for illustration, temperature cycling plus quiver testing. This multi-variable proving attack provides a closer appraisal of real-world operating environments. Unlike usual testing, the end of HALT proving is to interrupt the specimen. When the merchandise fails, the weakest point is recognized, so applied scientists know closely what demands to be done to develop merchandise quality. After a merchandise has failed, the weak constituents are upgrade or toughened. The revised specimen is so subjected to an extra unit of ammunition of HALT proving, with the scope of temperat ure, quiver, or floor further increased, so the merchandise fails once more. This identify the following weakest point. By traveling through several proving like this, the merchandise can be made rather strong. With This familiar attack, merely the weak musca volitanss are identified for betterment. This type of proving supply so much information about the assembly and public presentation of a merchandise, that it can be rather supportive for newer applied scientists assigned to a merchandise which they are non wholly familiar. HALT proving must be performed during the design period of a merchandise to build the basic design is dependable. But it is indispensable to observe that the units being tested are likely to be hand-made technology paradigm. At suggestion, we have found that HALT proving should besides be performed on existent industry units, to guarantee that the passage from technology design to production design has non resulted in a loss of merchandise quality or hardiness. Some applied scientists may see this attack as scientifically sensible, but economically impractical. though, the cost of HALT proving is much a lesser sum of than the cost of field failures.2.6 HIGHLY-ACCELERATED STRESS SCREENING ( HASS )HASS testing is an ongoing showing trial, performed on usual production units. Here, the thought is non to damage the merchandise, but instead to verify that existent industry units continue to run decently when subjected to the cycling of ecological factors used during the HASS trial. The bounds used in HASS proving are based on a skilled probe of the HALT proving parametric quantities. The importance of HASS proving can be suited when 1 considers today ‘s typical production scenario. Natural stuffs are purchased from a seller who uses stuffs purchased from other sellers. Components and sub-assemblies are obtained from makers all over the universe. The finishing gathering of the merchandise is performed by a subcontractor. This manner that the quality of the concluding merchandise is a function of the quality of all the constituents, stuffs, and procedures which are a portion of that concluding merchandise. These constituents, stuffs, and procedures c an and make alter over clip, in that manner impacting the worth and dependability of the concluding merchandise. The best manner to guarantee that fiction units continue to run into dependability aims is through HASS testing.2.7 RELIABILITYDependability is definite as the chance that a device will execute its required map under stated conditions for a exact period of clip. predict with some grade of Confidence is really dependent on right specifying a figure of parametric quantities. For case, taking the sharing that matches the information is of primary importance. If a right distribution is non chosen, the consequences will non be dependable. The confidence, which depends on the sample size, must be adequate to do right determinations. Individual element failure rates must be based on a big adequate population and of import to truly reflect present twenty-four hours normal uses. There are experimental considerations, such as influential the incline of the failure rate and cipherin g the activation power, every bit good as ecological factors, such as temperature, humidness, and quiver. eventually, there are electrical stressors such as electromotive force and current. Dependability technology can be slightly conceptual in that it involves much statistics ; yet it is technology in its most reasonable signifier. Will the design execute its proposed mission? Product dependability is seen as a grounds to the stamina of the design every bit good as the unity of the category and fabricating committednesss of an societies. One of the rudimentss of understanding a merchandise ‘s dependability requires an apprehension of the estimation of the failure rate. The conventional method of finding a merchandise ‘s failure rate is through the usage of accelerated quiver runing life trials perform on a sample of Devicess. The failure rate obtained on the life trial sample is so extrapolated to end-use fortunes by agencies of prearranged numerical theoretical accounts to give an appraisal of the failure rate in the field application. even though there are many other emphasis methods engaged by electronic assembly makers to to the full separate a merchandise ‘s dependability, the informations generated from operational life trial sampling is the major method used by the production for gauging the failure rate of a electronic assembly in field service.Failure Rate ( I » )Measure of failure per unit of clip. The utile life failure rate is based on the exponential life distribution. The failure rate typically decreases somewhat over early life, so stabilizes until wear-out which shows an increasing failure rate. This should happen beyond utile life.Failure In Time ( FIT )Measure of failure rate in 109 device hours ; e. g. 1 FIT = 1 failure in 109 device hours.Entire Device Hours ( TDH )Th e summing up of the figure of units in operation multiplied by the clip of operation.Average Time between failures ( MTBF )Dependability is quantified as MTBF ( Average Time Between Failures ) for repairable merchandise and MTTF ( Average Time To Failure ) for non-repairable merchandise. A right apprehension of MTBF is of import. A power supply with an MTBF of 40,000 hours does non intend that the N = Number of units under trial. If the MTBF is known, one can cipher the failure rate as the opposite of the MTBF. The expression for ( I » ) is: where R is the figure of failures. Once a MTBF is calculated, chance can deduce from following equation:R ( T ) = e-t/MTBFConfidence Level or Limit ( CL )Probability degree at which population failure rate estimations are derived from sample life trial. The upper assurance degree interval is used.Acceleration Factor ( AF )A changeless derived from experimental informations which relates the times to failure at two different emphasiss. The AF allows extrapolation of failure rates from accelerated trial conditions to utilize conditions. Since dependability informations can be accumulated from a figure of different life trials with several different failure mechanisms, a comprehensive failure rate is desired. The failure rate computation can be complicated if there are more than one failure mechanisms in a life trial, since the failure mechanisms are thermally activated at different rates. Equation 1 histories for these conditions and includes a statistical factor to obtain the assurance degree for the resulting failure rate.The Bathtub CurveThe life of a population of units can be divided into three distinguishable periods. Figure 1 shows the dependability â€Å" bathtub curve † which theoretical accounts the cradle to sculpt instantaneous failure rates vs. clip. If we follow the incline from the start to where it begins to flatten out this can be considered the first period. The first period is characterized by a decreasing failure rate. It is what occurs during the early life of a population of units. The weaker units die off go forthing a population that is more strict. This first period is besides called baby mortality period. The following period is the level part of the graph. It is called the normal life. Failures occur more in a random sequence during this clip. It is hard to foretell which failure manner will attest, but the rate of failures is predictable. Notice the changeless incline. The 3rd period begins at the point where the incline begins to increase and extends to the terminal of the graph. This is what happens when units become old and get down to fail at an increasing rate.Figure 2.1 bath bath curveReliability Predictions MethodsA batch of clip has been spent on developing processs for gauging dependability of electronic equipment. There are by and large two classs: ( 1 ) anticipations based on single failure rates, and ( 2 ) demonstrated dependability based on operation of equipment over clip. Prediction methods are based on constituent informations from a assortment of beginnings: failure analysis, life trial informations, and device natural philosophies. For some computations ( e.g. military application ) MIL-HDBK-217 is used, which is considered to be the standard dependability anticipation method. A simple failure rate computation based on a individual life trial would follow equation 1. I »iˆ = failure rate. TDH = Total Device Hours = Number of units x hours under emphasis. AF = Acceleration factor, Since dependability informations can be accumulated from a figure of different life trials with several different failure mechanisms, a comprehensive failure rate is desired. The failure rate computation can be complicated if there are more than one failure mechanisms in a life trial, since the failure mechanisms are thermally activated at different rates. Equation 1 histories for these conditions and includes a statistical factor to obtain the assurance degree for the resulting failure rate where, I » = failure rate in FITs ( Number fails in 109 device hours ) I? = Number of distinguishable possible failure mechanisms K = Number of life trials being combined eleven = Number of failures for a given failure mechanism I = 1, 2, †¦ I? TDHj = Total device hours of trial clip for life trial J, J = 1, 2, †¦ K AFij = Acceleration factor for appropriate failure mechanism, I = 1, 2, †¦ K M = I §2 ( I ± , 2r +2 ) / 2 where, I §2 = qi square factor for 2r + 2 grades of freedom R = entire figure of failures ( I? xi ) I ± = hazard associated with CL between 0 and 1.2.2 SOLDER PASTERole Of Solder Paste In ReflowingSolder paste is a combination mixture of a flux composing and a extremely grinded, powdered solder metal metal that is usually used in the electronics industry to soldering procedures. And besides it is call as a attachment medium between the device interconnectedness characteristics and the PCB itself. The constituents of a solder paste are specially designed for first-class printing and reflow features. In normal instance of the surface saddle horse soldering procedure involves puting the substrate and a little sum of solder paste in a printed circuit board. After that the system will be heated until the solder reflows, forms an electrical connexion between the solder tablet and the electrical contact of electronics portion. After this reflow finished it forms both an electrical and mechanical connexion between the electronics constituents and the printed circuit board.Selection Criteria Of A Solder PasteChoice of a solder paste is really of import factor for reflowing procedure, dependability & A ; its quality. The undermentioned factors are considerable for a good solder paste [ 6 ] . The size of the solder metal atoms which are in the solder paste The inclination to organize nothingnesss The belongingss of the flux medium of the solder paste Alpha atom emanation rate The design of the stencil to be used for publishing Thermal belongingss of the solder paste Electrical belongingss of the solder pasteChapter 03MATERIALS AND EXPERIMENT METHODOLOGY3.1SOLDER PasteThe inside informations of solder paste used in the experiment are given in the undermentioned tabular arrayPCB noAlloy1 & A ; 2 Sn95.5Ag4Cu0.5 3 & A ; 4 Sn42Bi57Ag1 Table 3.1. types of solder paste used in experiment For this undertaking all above solder paste should be in a container with appropriate labelling and designation on it to separate it from the Tin – lead solder paste. The solder paste should be stored in a icebox between 35 – 45F. and should be allowed to come room temperature for minimal four hours before making the solder paste printing. Once it has finished the utilizing solder paste must replace to the icebox since it can non be at room temperature over 24 hours. The self life of the lead free solder pastes may be cut downing from the typical six month. The above guidelines are purely followed in this undertaking. Because it is non merely for warrant the quality of solder paste but besides a good manner to cut down the mistakes that may impact the concluding consequences of the undertaking.3.2 SOLDER PASTE PrintingImportant of Solder Paste PrintingSurface mount engineering ( SMT ) is used extensively in the electronics industry. Surface saddle horse constituents are potentially more dependable merchandises can be designed and manufactured utilizing the SMT. The solder paste stencil publishing procedure is really critical and of import measure in the surface saddle horse manufacting procedure. Most of all the bonding defects are due to jobs covering with the showing procedure. Stencil printing procedures have major cautiousnesss in operation and put up stairss. When we are supervising these factors carefully we can minimise the defects. The chief intent of publishing solder paste on PCB is to provide solder metal to solder joint to rectify sum. That merely publish must be aligned right and can acquire a perfect constituent arrangement.Printing Procedure ParametersSome of the undermentioned parametric quantities are really of import to publishing procedure. Stencil Stencils are utilizing for the solder paste slip easy off the aperture edges and thereby secures a unvarying print. For this procedure we utilizing electro formed stencils. Because of these stencils have really shape border and somewhat conelike. By and large a stencil is mading from cuppa or Ni. ENVIRONMENTAL Dust and soil from the air that will make the PCBs and stencils can be defects hapless wet ability in the reflow bonding procedure. So PCBs should be stored in certain bundles and cleaned before usage. SOLDER PASTE Solder paste characterise must be controlled to accomplish a maximal production consequences. Some of the factors are given below [ 12 ] . Percentage of metal Viscosity Slump Solder balls Flux activity working life and shelf lifeSolder Paste Printing Equipment and ProcessStencil printing parametric quantities are really of import factors in publishing procedures to accomplish a best output. The undermentioned parametric quantities must be proctors and controlled in a printing procedure. Squeegee force per unit area = 8kg Squeegee speed = 20 mm/s Separation speed = 100 % Printing spread = 0.0 millimeter These factors and bound can be adjust for our undertaking intent Figure 3.1 DEK 260 stencil printing machine The DEK 260 stencil printing machine is used to publish solder paste on the circuit board. This DEK 260 stencil printing machine has two chief maps. Registers the place of the merchandise screen with in the print caput Positioning the circuit board below the stencil, to cook for the print rhythm. The boards to be print are supported on magnetic tooling and held by vacuity caps arranged on the home base to vouch the board steady during the printing on to the board. The first measure of the experiment is to make the solder paste publishing on to the board.Figure 3.2 Stencil printing by manusIn this undertaking unable to acquire metal stencil, so circuit boards are printed by manus, below process followed to publish PCB Put weights onto the stencil to repair it turn over the squeegee over the stencil solder paste presses through the aperture onto PCB separate stencil Two circuit boards are printed with solder paste for each solder paste types. Wholly 4 circuit boards printed.Pick and PlaceComponent of PCB placed by choice and topographic point machine ( APS Gold-Place L20 ) . robotic weaponries are used to put surface-mount devices onto PCB. Pick and topographic point process as follow. pneumatic suction noses taken by caput of arm, so moved to feeder where the constituent is loaded. The suction nozzele picks it up utilizing vacuity, and moves to the arrangement location so centers the constituent with focus oning fingers. After justified aligned point, it places the constituent onto solder paste.Figure 3.3 APS Gold-Place L203.3 SOLDER PASTE REFLOWPROCESS & A ; PROFILEFigure 3.4 reflow ovenReflow procedure is really of import to accomplish a good dependable solder articulation. Novastar 2000 HT convectional reflow oven is used in research lab for the probe. When making the reflow procedure with lead free solder paste it has to be performed at a m inimal peak temperature of 150.It is by and large accepted that lead free solders requires a higher reflow temperature up to 230 – 240.reflow oven has six warming zones and chilling zone. ( Wu J.2000 ) Reflow profile will be impacting the dependability of a solder articulation. Because it is a major factor that influence the formation of the intermettallic beds in a solder articulation. Intermettalic bed is a critical portion of a solder articulation. An intermettalic bond thickness should be thin. Therefore a good reflow profile must bring forth solder bumps with a thin intermetallic layer.. ( Zhang RR.2001 )PREHEAT ZONEIn this zone indicates how the temperature is altering fast on the printed circuit board. The ramp-up rate is normally between 1-3 per second. If this rate exceeds there will be harm to constituents from thermic daze. Merely In this preheat zone the solder paste begins to vaporize. So if the rise rate is excessively low the vaporization of flux is non uncomplete. This will impact the quality of the solder articulation.THERMAL SOAK ZONEIt is besides called the flux activation zone. In this thermic soak zone it will take 60-120 seconds for remotion of solder paste an d activation of fluxes. Solder splatter and balling will be go on if the temperature is excessively high or excessively low. End of this thermic daze zone a thermic equilibrium will finish the full circuit board.REFLOW ZONEIn this reflow zone merely the maximal temperature will be reached. In this zone we have to see about the peak temperature that is the maximal allowable temperature of full procedure. It is really of import to supervise this maximal temperature exceeds the peak temperature in this zone. It may do harm to the internal dies of SMT constituents and a block to the growing of intermetalic bonds. we have to see the profile clip besides. If clip exceeds than the industries specification it besides affect the circuit board ‘s quality.Cooling ZoneIn the reflow procedure the last zone is chilling zone. A proper chilling inhabits extra intermetallic formation or thermic daze to the constituents. By and large the chilling zone temperature scope is 30 – 100. In this undertaking, the undermentioned temperature profiles were selected. This temperature profile is stranded reflow profile for lead free bonding. Zone 1 220 Zone 2 180 Zone 3 170 Zone 4 190 Zone5 233 Zone 6 233 Wholly 4 circuit boards were printed. Choosing of good reflow profile was non involves any defects or amendss in the printed circuit board.Figure 3.5 Reflow profileFigure 3.6 printed circuit board after reflowSET UP EVENT DETECTORFigure 3.7 Event sensorThe constructed PCB ‘s were connected with event sensor by thread informations overseas telegram. Ribbon overseas telegram addressed harmonizing to `Analysis tech STD series event sensors manual ‘ . pins 1 to 32 map as beginning terminus and pins 33 to 37 map as land terminus.Figure 3.8 Ribbon overseas telegram pin referenceTo obtain closed cringle circuit to supervise the behavior of PCB constituents, PCB boards 1, 2, 3 and 4 connected to impart 1,2,33 and 34 severally.Ribbon overseas telegramAfter connected thread overseas telegram with event sensor and environment chamber, channels are assigned in â€Å" WIN DATA LOG † package which supplied with event sensor. For this trial following scenes define for informations acquisition.Figure 3.9 set up trial informations in event sensor3.5 INVESTICATING RELIABILITY OF SOLDER JOINT UNDER VIBRATION CHAMERFigure 3.10 Design Environmental FS800-70SVIn this survey, PCB ‘s were used in Variable Frequency Vibration Test to analyze the dynamic response of PCB assembly subjected to random quiver burden. The PCB specimens were tested at different acceleration degrees to measure the solder articulation dependability subjected changing G-level quiver tonss ( G is the gravitative acceleration ) , severally. Vibration trials were accomplished by utilizing an electro dynamic Shaker ( Design Environmental FS800-70SV ) and event sensor. One accelerometer was used to find the dynamic response of the specimen, Daisy concatenation cringles were monitored at the same time by an Event Detector during quiver trial. Any opposition alteration transcending a preset threshold with minimal continuance of 200ns can be d etected by the Event Detector. When a cleft is initiated in the solder articulation during the quiver trial, the opposition will increase. The failure standards recommended by IPC – 785 criterion is defined as daisy concatenation opposition by thermic or mechanical transients or perturbations in the signifier of short continuance ( ~ 1 A µsec ) high opposition spikes ( & gt ; 300 a„ ¦ ) . During thermic alterations the solder articulations are capable to shear, non tensile, lading ; hence, fracture surfaces of fractured solder articulations slide relative to each other bring forthing the characteristic short continuance intermittent. Therefore, in this context, the practical definition of solder joint failure is the break of electrical continuity ( & gt ; 300 ohms ) for periods greater than 1 microsecond. Figure 3.11 PCB ‘s was mounted inside the Environment chamber in this mode. Figure 3.12 Above tabular array exemplifying trial program.Figure 3.13 Trial programFigure 3.14 graphs obtained from chamberChapter 4ConsequencePCB board Failure rate ( % ) Operation clip ( hours ) Dependability 1 24.0 5 0 2 63.0 13.04 0 3 1.6 0.3305 0.5893 4 2.5 0.5083 0.2806Table 4.1 dependability of solder pasteThe proving began with 1 GRMS. The intent of this to observe any gross issues in solder articulations, every bit good as with the informations acquisition system. No failures were detected at beginning, nevertheless, after 1.5GRMS an review revealed that both PCBs 3 and 4 were failed. Following, quiver degrees were stepped bit by bit to 6GRMS increases over the period of five hours PCB 1 got failed, In 13.04 hr ‘s period the chamber reached degree of about 14GRMS, staying PCB besides got failed. However, the failure mechanism was attributed to a quiver moving on the solder connexion particular to these parts and was straight related to thermic mistakes. Failure rate Time elapsed Above graph illustrating failure rate vs. Time elapsed for Sn42Bi57Ag1 Failure rate Time elapsed Above graph illustrating failure rate vs. Time elapsed for Sn95.5Ag4Cu0.5Chapter 5RESULT ANALYSISFrom dependability analysis sample 3 has maximum dependability and sample 2 has minimum dependability. Each sample was subjected to nominal supply current and opposition value in conformity with the design and public presentation specification. Respective trial samples continued to vibrate with some public presentation abnormalities observed. The aim of this experiment was to utilize HALT quiver to set up the relationship between the life of similar parts soldered with different solder composings. The consequences proved inconclusive for the primary intent of â€Å" Sn95.5Ag4Cu0.5 † versus â€Å" Sn42Bi57Ag1 † articulation random quiver trial. Both composings demonstrated weak public presentation and the consequences may propose that with regard to this brief random quiver trial, solder articulation dependability is different between the two composings. No samples were separated from the trial vehicle as a consequence of the quiver applied. However, the trial procedure revealed insight into HALT and suggested factors which can impact consequences when soldered constituents are being compared. First, Printed circuit board kineticss would be understood and controlled so that acceleration hot musca volitanss and nothings are made more equal in amplitude. A flexible PCB will debar and bring forth bending emphasiss suited for measuring emphasis on solder articulations. But with a flexible board acceleration uniformity become hard to command and do a comparing trial less nonsubjective. Second, HALT random quiver is a good methodological analysis for bring forthing multi-axis wide spectrum energy for PCBs and their constituents. ( Wu J.2000 ) The typical method to analyze the functionality of a PCB in a quiver environment is to verify the quiver transmissibility. Normally the transmissibility at any location of PCB should be less than a factor of 10, i.e. , 1 G input will non bring forth more than 10 G end product at any location of the PCB. To accomplish this end, two methods can be applied to the PCB design. One is to restrain the PCB tightly to the fixture, which can be realized by bettering the boundary conditions in the finite component analysis theoretical account. The other is to relocate heavy affiliated constituents of the PCB board to allow optimum locations ( i.e. , mass re-distribution ) . ( Wu J.2000 ) Lead free solder assemblies have quickly been promote in the micro-packaging development to forestall the environmental pollution, issues on the dependability has non been clearly solved. Several experiments have been conducted on the soundness of alternate lead free soldering technique such as Sn-Ag-Cu solder. During the bumping procedure, a considerable thermic distortion is occurred and the chemical features of solder and bed qualities are besides changed in agreement with the surface completing method such as ET ( electric Sn ) , ENEPIG ( electro less nickel, electro less Pd and submergence gold ) etc. The IMC ( intermetallic compound ) bed is formed in a micro-scale part between the solder and the surface completing stuff under high temperature adhering procedure. In the field of micro-packaging together with IMC bed, one of the most hard issues is to mensurate width interface beds in a solder articulations. Since the IMC beds have been estimated as the weakest subdivision in th e solder articulations, a accurate finding of mechanical belongingss in the country of this critical part may supply direct and enhanced information to understand the break behavior. aˆ? . ( Zhang RR.2001 ) stringency of mounting bolt of PCB reduced during experiment. Due to this consequence the PCB stated to vibrate freely. Applied quiver force was non shared uniformly. From finite component analysis alterations in stringency of mountin bolt can be realize.Chapter 6DecisionThe decisions ensuing from this work are:.Interactions between temperature and quiver were found important and therefore had influence on concluding consequence. Stencil printing by manus affect the solder joint dependability. Better apprehension gained about electronic assembly behaviors when subjected to quiver. Gained cognition about electronic assembly procedure and how it is act uponing in solder articulation dependability. Gained good experience in managing event sensor and environmental proving chamber.Chapter 7FUTURE WORKSIn this undertaking investigated the consequence of quiver of solder articulation dependability in electronic assembly. For this probe two different types solder paste used, eventually all specimens were tested in environmental Chamber. In this undertaking when making quiver trial informations acquired by event sensor is non accurate value. From informations obtained from event sensor does non give proper analytical consequence. In sing about the hereafter works of this undertaking can be expand based on acquirable informations type, every bit good as finite component analysis because dependability of a solder articulation depends on assorted environmental factors, so result analysis will be more accurate and stand with more international criterions.

Essay on good bose

Essay on good bose Essay on good bose Let your success show in the person you become, rather than your accomplishments. Rather than trying to impress others with what you can do (and have done) – let your character and demeanor convey your power in every interaction with others. You’ll find that people usually care less about what you’ve done than who you are. A truly successful person never has to say a word about their accomplishments, because it’s written all over them. The greatest thing about this inner journey to success is that it automatically causes the floodgates of prosperity to open and shower you with other benefits, like money and prestige. Of course, by then they’re just a nice bonus to the greatest benefit of success – who you’ve become along the way. Characteristics To Make A Good Boss Every successful company is usually led by a good boss, who is decisive, A good listener and effective. In my opinion, a decisive boss is a person, who comes up with a decision quickly and correctly. In order to make workers’ confidence and orient ability in dealing with problems, a good boss should be a decision-makers whenever the company has problems. For example, when there is any problem, the decisive boss does not let workers wait for the boss’ decisions. In addition, a good listener boss always brings a comfortable working environment to workers. Workers will be able to share comfortably with the boss when they have difficulties, such as unclear information,

Click and Drag a Delphi Form Without the Caption Bar

Click and Drag a Delphi Form Without the Caption Bar The most common way to move a window is to drag it by its title bar. Read on to find out how you can provide dragging capabilities for Delphi forms without a title bar, so the user can move a form by clicking anywhere on the client area. For example, consider the case of a Windows application that doesnt have a title bar, how can we move such a window?  In fact, its possible to create windows with a nonstandard title bar and even non-rectangular forms. In this case, how could Windows know where the borders and the corners of the window are? The WM_NCHitTest Windows Message The Windows operating system is heavily based on handling messages. For example, when you click on a window or a control, Windows sends it a wm_LButtonDown message, with additional information about where the mouse cursor is and which control keys are currently pressed. Sounds familiar? Yes, this is nothing more than an OnMouseDown event in Delphi. Similarly, Windows sends a wm_NCHitTest message whenever a mouse event occurs, that is, when the cursor moves, or when a mouse button is pressed or released. Code to Input If we can make Windows think that the user is dragging (has clicked on) the title bar rather than the client area, then the user could drag the window by clicking in the client area. The easiest way to do this is to fool Windows into thinking that youre actually clicking on the title bar of a form. Heres what you have to do: 1. Insert the following line into your forms Private declarations section (message handling procedure declaration): procedure WMNCHitTest(var Msg: TWMNCHitTest) ; message WM_NCHitTest; 2. Add the following code into the implementation section of your forms unit (where Form1 is the  assumed form name): procedure TForm1.WMNCHitTest(var Msg: TWMNCHitTest) ;begin   Ã‚   inherited;  Ã‚   if Msg.Result htClient then Msg.Result : htCaption;end; The first line of code in the message handler calls the inherited method to obtain the default handling for the wm_NCHitTest message. The If part in the procedure intercepts and changes your windows behavior. This is what actually happens: when the operating system sends a wm_NCHitTest message to the window, together with the mouse coordinates, the window returns a code that states which portion of itself has been hit. The important piece of information, for our task, is in the value of the Msg.Result field. At this point, we have an opportunity to modify the message result. This is what we do: if the user has clicked in the forms client area we make Windows to think the user clicked on the title bar. In Object Pascal words: if the message return value is HTCLIENT, we simply change it to HTCAPTION. No More Mouse Events By changing the default behavior of our forms we remove the ability of Windows to notify you when the mouse is over the client area. One side effect of this trick is that your form will no longer generate events for mouse messages. Captionless-Borderless Window If you want a captionless borderless window similar to a floating toolbar, set the Forms Caption to an empty string, disable all of the BorderIcons, and set the BorderStyle to bsNone. A form can be changed in various ways by applying custom code in the CreateParams method. More WM_NCHitTest Tricks If you look more carefully at the wm_NCHitTest message youll see that return value of the function indicates the position of the cursor hot spot. This enables us to play some more with the message to create strange results. The following code fragment will prevent users to close your forms by clicking on the Close button. if Msg.Result htClose then Msg.Result : htNowhere; If the user is trying to move the form by clicking on the caption bar and dragging, the code replaces the result of the message with a result which indicates the user clicked on the client area. This prevents the user from moving the window with the mouse (opposite to what we were doing in the begging of the article). if Msg.Result htCaption then Msg.Result : htClient; Having Components On a Form In most cases, well have some components on a form. Lets say, for example, that one Panel object is on a form. If Align property of a panel is set to alClient, the Panel fills the entire client area so that it is impossible to select the parent form by clicking on it. The code above will not work - why? Its because the mouse is always moving over the Panel component, not the form. To move our form by dragging a panel on the form we have to add few lines of code in the OnMouseDown event procedure for the Panel component: procedure TForm1.Panel1MouseDown  Ã‚   (Sender: TObject; Button: TMouseButton;  Ã‚   Shift: TShiftState; X, Y: Integer) ;begin   Ã‚   ReleaseCapture;   Ã‚   SendMessage(Form1.Handle, WM_SYSCOMMAND, 61458, 0) ; end; Note: This code will not work with non-window controls such as TLabel components.