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Currently, China is undergoing an economic reform. In the last few years, the Chinese government has stressed the importance of science and technology and urged the scientists in China to make contributions in the construction of China. In this paper, examples are given to show how O.R. methods are applied in system plannings in petroleum industry, regional coal base and agriculture.
This paper describes the most essential features of the various decision situations that can arise whenever a system is under control of multiple decision units. Although it has been arranged in a different manner and it differs in its focal points, this paper follows a more detailed suvey of the field by the same author [Findeisen, 1982]
Beginning with the first oil crisis, the economic development in West Germany and most other industrialized countries is no longer what it used to be: growth rates sharply diminished, unemployment became a burning problem and inflation-rates did hardly respond to the slackening demand. But it came even worse: what in the mid-seventies had been called stagflation turned into a severe recession in the...
A case study to estimate national accounts containing input-output table is done for Nepal on the 1976/77 buget year. Similar national accounts are possible for the other least developed countries, following this method. The obtained accounts are applicable and useful to many regions of informative activities such as analysis, modelling, planning of national development economy.
In this paper we have discussed nonlinear econometric models with entropy objective functions. It has been shown that the selection of an entropy objective has two major advantages compared with the commonly used quadratic objective function. First of all, this objective function choice makes it possible to explicitly solve all linearly constrained models, i.e. with linear equality as well as inequality...
The problem of power cost minimization in railway traction was considered. Since direct solution of this problem is a too extensive task, the problem was decomposed into two problems: 1. Determination of optimum running times of single trains, 2. Determination of station stopping times for all the trains participating in traffic. As the first problem was considered in previous papers, only solution...
These results show that urban transit routing problems with flexible schedules can be solved optimally. Problems with wider time intervals could be solved, and the network aggregation used allows systems of up to 500 trips to be handled without memory problems. Savings of the order of 5% in vehicle numbers, and of 1–3% in travel and waiting times could represent appreciable economies on a large...
Some of the concepts introduced can be applied to sequencing problems in which the critical path method can be used, i.e. flow-shop, parallel shop with resource constraints under criteria: maximum completion time, maximum lateness, maximum tardines and maximum penalty cost.
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