The quantitative model for evaluating labor relations in enterprise consists of two index systems. One system,which consists of 6 second level indices and 26 third level indices, deals with quantitative evaluation of ...The quantitative model for evaluating labor relations in enterprise consists of two index systems. One system,which consists of 6 second level indices and 26 third level indices, deals with quantitative evaluation of the present situation of labor relations in enterprise. And the other system, which consists of 5 indices, deals with quantitative evaluation of the trend of future labor relations development.展开更多
Most epidemic models for the spread of diseases in contact networks take the assumption of the infected probability of a susceptible agent dependent on its absolute number of infectious neighbours. We introduce a new ...Most epidemic models for the spread of diseases in contact networks take the assumption of the infected probability of a susceptible agent dependent on its absolute number of infectious neighbours. We introduce a new epidemic model in which the infected probability of a susceptible agent in contact networks depends not on its degree but on its exposure level. We find that effective average infection rate ^-λ （i.e., the average number of infections produced by a single contact between infected individuals and susceptible individuals） has an epidemic threshold ^λc = 1, which is related to recovery rate, epidemic mechanisms and topology of contact network. Furthermore, we show the dominating importance of epidemic mechanisms in determining epidemic patterns and discussed the implications of our model for infection control policy.展开更多
Using the Cournot Game Model, this paper has analyzed the motivation of the distributors' alliance to gain competitive advantage in marketing channel. At first, this paper separately analyzed the advantage of alli...Using the Cournot Game Model, this paper has analyzed the motivation of the distributors' alliance to gain competitive advantage in marketing channel. At first, this paper separately analyzed the advantage of alliance in the situation of oneshort game and infinitely repeated game, then, based on the analysis of distributors' betrayal of the alliance under infinitely repeated game, the conditions to maintain the distributors alliance are put forward and discussed.展开更多
According to the typical engineering samples, a neural net work model with genetic algorithm to optimize weight values is put forward to forecast the productivities and efficiencies of mining faces. By this model we c...According to the typical engineering samples, a neural net work model with genetic algorithm to optimize weight values is put forward to forecast the productivities and efficiencies of mining faces. By this model we can obtain the possible achievements of available equipment combinations under certain geological situations of fully-mechanized coal mining faces. Then theory of fuzzy selection is applied to evaluate the performance of each equipment combination. By detailed empirical analysis, this model integrates the functions of forecasting mining faces' achievements and selecting optimal equipment combination and is helpful to the decision of equipment combination for fully-mechanized coal mining.展开更多
文摘The quantitative model for evaluating labor relations in enterprise consists of two index systems. One system,which consists of 6 second level indices and 26 third level indices, deals with quantitative evaluation of the present situation of labor relations in enterprise. And the other system, which consists of 5 indices, deals with quantitative evaluation of the trend of future labor relations development.
基金Supported by the Key Program Projects of the National Natural Science of China under Grant No 70431002, and the National Natural Science Foundation of China under Grant No 10372054.
文摘Most epidemic models for the spread of diseases in contact networks take the assumption of the infected probability of a susceptible agent dependent on its absolute number of infectious neighbours. We introduce a new epidemic model in which the infected probability of a susceptible agent in contact networks depends not on its degree but on its exposure level. We find that effective average infection rate ^-λ （i.e., the average number of infections produced by a single contact between infected individuals and susceptible individuals） has an epidemic threshold ^λc = 1, which is related to recovery rate, epidemic mechanisms and topology of contact network. Furthermore, we show the dominating importance of epidemic mechanisms in determining epidemic patterns and discussed the implications of our model for infection control policy.
基金This work was supported by Natural science Foundation of China No. 70302017
文摘Using the Cournot Game Model, this paper has analyzed the motivation of the distributors' alliance to gain competitive advantage in marketing channel. At first, this paper separately analyzed the advantage of alliance in the situation of oneshort game and infinitely repeated game, then, based on the analysis of distributors' betrayal of the alliance under infinitely repeated game, the conditions to maintain the distributors alliance are put forward and discussed.
文摘According to the typical engineering samples, a neural net work model with genetic algorithm to optimize weight values is put forward to forecast the productivities and efficiencies of mining faces. By this model we can obtain the possible achievements of available equipment combinations under certain geological situations of fully-mechanized coal mining faces. Then theory of fuzzy selection is applied to evaluate the performance of each equipment combination. By detailed empirical analysis, this model integrates the functions of forecasting mining faces' achievements and selecting optimal equipment combination and is helpful to the decision of equipment combination for fully-mechanized coal mining.
