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留学生论文写作内容参考-线性规划:优缺点与策略

时间:2018-01-19 15:52来源:www.ukthesis.org 作者:英国论文网 点击联系客服: 客服:Damien
在决策制定模型是重要的体现,因为它代表着企业的决策问题的本质。术语“表述”是指把口头描述和数值数据转换为表示决策因素、目标和资源使用限制之间的相关关系的数学表达式的过程。线性规划(LP)是一种特殊类型的技术,用于对“稀缺”或“有限”资源(如劳动力、材料、机器、时间、仓库空间、资本、能源等)进行经济分配,以便在给定的最优标准的基础上,对产品、服务、工作、新设备、项目等几个相互竞争的活动进行分配。稀缺资源这个短语指的是在规划期间没有可用性的资源。最优性准则通常是业绩、投资回报、利润、成本、效用、时间、距离等。
 
I LINEAR PROGRAMMING
In a decision-making embroilment, model formulation is important because it represents the essence of business decision problem. The term formulation is used to mean the process of converting the verbal description and numerical data into mathematical expressions which represents the relevant relationship among decision factors, objectives and restrictions on the use of resources. Linear Programming (LP) is a particular type of technique used for economic allocation of 'scarce' or 'limited' resources, such as labour, material, machine, time, warehouse space, capital, energy, etc. to several competing activities, such as products, services, jobs, new equipment, projects, etc. on the basis of a given criterion of optimally. The phrase scarce resources mean resources that are not in unlimited in availability during the planning period. The criterion of optimality generally is either performance, return on investment, profit, cost, utility, time, distance, etc.
 
George B Dantzing while working with US Air Force during World War II, developed this technique, primarily for solving military logistics problems. But now, it is being used extensively in all functional areas of management, hospitals, airlines, agriculture, military operations, oil refining, education, energy planning, pollution control, transportation planning and scheduling, research and development, etc. Even though these applications are diverse, all I.P models consist of certain common properties and assumptions. Before applying linear programming to a real-life decision problem, the decision-maker must be aware of all these properties and assumptions.
 
The word linear refers to linear relationship among variables in a model. Thus, a given change in one variable will always cause a resulting proportional change in another variable. For example, doubling the investment on a certain project will exactly double the rate of the return. The word programming refers to modelling and solving a problem mathematically that involves the economic allocation of limited resources by choosing a particular course of action or strategy among various alternative strategies to achieve the desired objective.(责任编辑:cinq)


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