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- International Series in Operations Research & Management Science | Camille C. Price | Springer
- Military Operations Research
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Quantitative decision making for cued land reconnaissance: a defence case study
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Ed , Huber, S. Avkiran, N. Ed , Ringle, C. Available Formats: eBook Hardcover Softcover. Kahraman, C. Ed , Topcu, Y. Cox Jr. The reliability of solutions is also high. For the large size problems, where simulation was to be used, it was not possible to carry it out manually, which is now possible with the use of computers. To handle linear programming problem with multiple variables use to be cumbersome and time taking; can be done at wink of moment without any manual efforts.
It enables organizations to consider more alternative actions and scenarios, and determine the best allocation of resources and the best plans for accomplishing goals. It is a software package developed by Chang and Sullivan for problem solving algorithms for OR as well as modules of statistics, non —linearity programming and financial analysis. It is an interactive linear, quadratic, and integer programming system useful to a wide range of users.
CPLEX solves linear and convex quadratic programs by simplex or interior-point methods, and linear and convex quadratic integer programs by a branch-and-bound procedure GUROBI: Gurobi solves linear programs by simplex and interior-point methods, and linear mixed- integer programs by a branch-and-bound procedure. Support for convex quadratic programs, both continuous and mixed-integer, is planned for version 4. The application reality is a little more complex and a little less dramatic. The model of OR as an activity conducted for executives by internal OR groups with a good deal of choice as to which issue to tackle.
A new model of highly specific investigations and developments conducted by external specialist firms and management consultancies is alive and flourishing. This is not an unequivocally happy outcome. There was, and still is, great merit in the sort of grounded, detailed investigation that is the hallmark of good traditional OR. The technically efficient, goal oriented, socially aware OR consultants of tomorrow may get things done and satisfy their clients but they may miss the potential implications or the valuable insight as they rush to the next challenge.
However, the limitations are related to the problem of model building and the time and money factors involved in application rather than its practical utility.
The models of OR strive to find out optimal solutions taking into account all the factors. These factors may be huge and state them in quantity and establish relationships among the factors require ample calculations which can be effectively solved by computers. OR provides solution only when all elements related to a problem can be quantified.
All relevant variables do not lend themselves to quantification. Factors which cannot be quantified find no place in OR study. Similarly, a manager fails to understand the complex working of OR. Thus there is a gap between the User and Analyst. OR models are a costly proposition as they require time and money for scientific application.
The computational time increases depending upon the size of the problem and accuracy of results desired. Implementation of any decision is a delicate task. It must take into account the complexities of human relations and behavior. Sometimes, resistance is offered due to psychological factors which may not have any bearing on the problem as well as its solution. As example, the derived solution may be sub-optimal i.
International Series in Operations Research & Management Science | Camille C. Price | Springer
Conflict between conclusion reached by the Operations Research analyst and the opinion of time managers as to the best course of action. It had its golden era. It is now a small professional grouping which has found its niche. Few people realize that OR lies behind many every day events, providing the algorithms for airline reservation systems, checking the credit worthiness of loan applicants, and calculating the replenishment quantities required by supermarkets. How computer has helped in popularizing operation research? What are the limitation of OR. Q2: Define OR.
What are the characteristics and limitation of OR technique.
Military Operations Research
Q3: Explain the main characteristics of operation research with suitable example. Q4: Define operation research. Give features of OR.