The history of the waterfall model The waterfall model which is also referred as a linear sequential life cycle model was the first model to be developed. The waterfall model is a sequential design process used in software development processes in which progress is seen as flowing steadily downwards(like a waterfall) through the phases of conception‚ initiation‚ analysis‚ construction ‚testing‚ production/implementation and maintenance. The waterfall model creation originates in the manufacturing
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Consistency Models1 David Mosberger TR 93/11 Abstract This paper discusses memory consistency models and their influence on software in the context of parallel machines. In the first part we review previous work on memory consistency models. The second part discusses the issues that arise due to weakening memory consistency. We are especially interested in the influence that weakened consistency models have on language‚ compiler‚ and runtime system design. We conclude that tighter interaction between
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whole attempt to formalize the definition of business models when he wrote that " "Business Model" is one of those terms of art that were central to the Internet boom: it glorifies all manner of half baked plans. All it really meant was how you planned to make money." In an abstract of his paper "A Mesoscopic Approach to Business Models: Nano Research on Management" published in "Economic Issues in China" Dr. Junyi Weng stated that "Business Model‚ a well known important and extensively used term
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A Spiral Model of Software Development and Enhancement Barry W. Boehm‚ TRW Defense Systems Group “Stop the life cycle-I want to get off!’’ “Life-cycle Concept Considered Harmful. ” “The waterfall model is dead.” “No‚ it isn’t‚ but it should be.” hese statements exemplify the current debate about software Iife-cycle process models. The topic has recently received a great deal of attention. The Defense Science Board Task Force Report on Military Software‘ issued in 1987 highlighted the concern
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3.1. The AK growth model The models described so far all have the implication that changes in government policies‚ such as subsidies to research or capital investment‚ have level effects but no long-run growth effects. That is‚ these policies raise the growth rate temporarily as the economy grows to a higher level of the balanced growth path. But in the long run‚ the growth rate returns to its initial level. There are two meanings of the phrase endogenous growth: [1] Long-run growth is not
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The Presentation of Self (Goffman’s Dramaturgical model) A. The Dramaturgical Model 1. All the World’s a Stage 2. The Performance B. Impression Management 1. The Definition of the Situation 2. Expressions and Impressions 3. Front Stage‚ Back Stage 4. Accounts‚ Excuses‚ & Justifications 5. Self Enhancement and Ingratiation 6. Self Awareness‚ Self Monitoring and Self Disclosure A. The Dramaturgical Model Erving Goffman is probably one of the most important sociologists in relation to
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The Minsky Model of a General Financial Crisis A Synopsis of ‘Chapter 2 -- The Anatomy of a Typical Crisis’ in Manias‚ Panics and Crashes - A History of Financial Crises by Charles P. Kindleberger and Robert Z. Aliber‚ Sixth Edition‚ Palgrave Macmillan‚ Copyright 2011 Since the end of the Great Depression “…financial failure has been more extensive and pervasive” in the 30-year period 1980 to 2010 than at any other time leading up to the present day (p. 7). Four financial crises occurred
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1. Introduction There is an abundance of models and theories which describe and explain internationalization‚ foreign entry modes and the foreign operations of firms (Elo‚ 2005). These models can be divided into two different perspectives: behavioural and economic (Elo‚ 2005‚ p.65). It is also suggested that the literature based on economic theory‚ which focuses on new market opportunities‚ internationalization‚ vertical integration and corporate growth‚ has been dominating. Whereas‚ behavioural
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some firms outperform others. Thus‚ managers need to determine how a firm is to compete so that it can obtain advantages that are sustainable over a lengthy period of time. Strategic Management is a way in which strategists set the objectives and proceed about attaining them. It deals with making and implementing decisions about future direction of an organization. It helps us to identify the direction in which an organization is moving The strategic planning‚ the first step towards strategic management
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European Journal of Operational Research 154 (2004) 345–362 www.elsevier.com/locate/dsw Returns to scale in different DEA models Rajiv D. Banker a‚ William W. Cooper b‚ Lawrence M. Seiford c‚ Robert M. Thrall d‚ Joe Zhu e‚* c School of Management‚ The University of Texas at Dallas‚ Richardson‚ TX 75083-0658‚ USA Graduate School of Business‚ The University of Texas at Austin‚ Austin‚ TX 78712-1174‚ USA Department of Industrial and Operations Engineering‚ University of Michigan‚ Ann Arbor‚ MI
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