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Your search keyword '"Duan, Zhenwei"' showing total 7 results
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7 results on '"Duan, Zhenwei"'

2. Research on optimization of coal mine safety investment structure

Author

SONG Hongna, ZHAI Xinxian, MA Jinshan, DUAN Zhenwei

Subjects
coal mining enterprises, order relation method, safety input, cobb-douglas production function, optimization model, Mining engineering. Metallurgy, TN1-997
Abstract

According to the safety input requirements of coal mining enterprises based on Safety Production Law, this paper adopts the specialist marking methods and the sequence relations to decide the weights of the investment requirements in the production law, and then uses Cobb-Douglas production function to build the coal mine safety input optimization model, uses the JM mine’s safety investment funds in recent years and MATLAB to perform multiple iterative calculations to obtain a reasonable allocation of coal safety inputs, safety engineering, mining technology upgrade, safety management transformation and safety training in the coal mine safety production, which provides a basis for future coal mine safety production inputs.

Published
2021
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6. Simulation of banks queuing system based on WITNESS

Author

Duan Zhenwei and Song Hongna

Subjects
Queueing theory, Operations research, Queue management system, Service time, Computer science, Server, Real-time computing, Interval (mathematics), Line (text file), Queue, Witness
Abstract

Queuing in a bank is a common phenomenon and also a knotty problem. This paper first processes collected line data of banks, gets distribution and parameters on customers arriving and the service time interval, then take a simulation by witness and put forward optimization measures. The assessments of two queuing strategies, taking the average length of staying and the average time of queuing in system as indexes, can play a role in the choice of the queuing way of multi-desks servers, at the same time, show it is one of effective measures, to improve efficiency of bank server system, that the calling number machine changed from multi queues and multi desks to single queue and multi desks system.

Published
2010

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