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In order to maintain the optimal conditions of a tool during production, Fab engineers have to periodically perform offline tool monitors to check its status. Usually, a limited tuning action is required to compensate the time effects that may decay the tool performance. Those tuning actions are basically calculated by a tool sensitivity table which describes the numerical relations between tuning...
Firstly this paper classifies Changjiang river's shipping goods into three kinds: public goods, quasi-public goods and private goods according to goods classification criterion of competitiveness and exclusiveness and establishes its characteristics' mathematical model, thinking that Changjiang river's shipping goods is a complex of three kinds of goods and its characteristics is not static and fixed,...
Mining still has some problems in our country by learning the present situation of mine production development. In order to improving mine safety in production, safety management can not be ignored. Recently our country already had some improvements. But there are still lots of problems to study and develop. The basic is to the optimal analysis and study on improving safety management system construction...
We consider a supply chain, which consists of N stocking locations and one supplier. The locations may be coordinated through replenishment strategies and lateral transshipments, i.e., transfer of a product among locations at the same echelon level. The supplier has limited production capacity. Therefore, the total amount of product supplied to the N locations is limited in each time period. When...
Dispatch and command center is the core sector of coal mine safety, production and management and its core functions is information processing and exchange. Through analysis the dispatching information flow and on the basis of positive feedback closed-loop management system theory, create a dispatching model by building PFS operating base, distinguish dispatching information feedback category, optimizing...
China's coal mine roadway layout systems are complicated, multi-production and poor matching. And thus affect the overall effectiveness of the coal production logistics system. Although the research content on coal mine logistics system at home and abroad are many, however, research on the optimization method of coal mine roadway layout system are very few. In this paper, we did an in-depth analysis...
The construction industry has been facing a paradigm shift to (i) increase; productivity, efficiency, infrastructure value, quality and sustainability, (ii) reduce; lifecycle costs, lead times and duplications, via effective collaboration and communication of stakeholders in construction projects. Digital construction is a political initiative to address low productivity in the sector. This seeks...
The excessive increase in the price of the oil barrel following the economic and political situation brought the public authority to adopt a national strategy of energy saving in order to preserve the energy resources of the country and to rationalise consumption. Among the adopted measures, we indicate theses ones: the productionpsilas optimization, the optimization of the transport and distribution...
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