Abstract Due to the two-phase commit protocol, all transactions of DDBS (distributed database system) will roll back if one of distributed nodes was overload, finally make the DDBS difficultly adapting to the Big Data’s environment, whose data has the characters of dynamic and randomness. In order to solve this problem, Shannon entropy is proposed to evaluate system’s load, using the maximum entropy principle of... Due to the two-phase commit protocol, all transactions of DDBS (distributed database system) will roll back if one of distributed nodes was overload, finally make the DDBS difficultly adapting to the Big Data’s environment, whose data has the characters of dynamic and randomness. In order to solve this problem, Shannon entropy is proposed to evaluate system’s load, using the maximum entropy principle of entropy with the objective function and constraints to balance the load and maximize resource’s utilization on the demand of user’s QoS. Overloaded node’s data will be migrated to other suitable nodes under the guidance of algorithm based on Shannon entropy, and make a step to the further design of Cloud database system. Experimental results show that the load evolution algorithm based on Shannon entropy can evaluate the load in Big Data’s environment, avoid single-node bottlenecks, and improve system’s performance. Read More Read Less

Abstract Safety ethical construction is beneficial to maximize policy following behavior(PFB) and avoid accidents of coal miners. This paper examines the congruence between miners perceptions of safety ethical espoused and enacted values and their relationship with PFB. To shed light on this relationship, direct supervisor values(DSV) actsas key moderator. We build on the safety ethical values framework to measure two types of values and... Safety ethical construction is beneficial to maximize policy following behavior(PFB) and avoid accidents of coal miners. This paper examines the congruence between miners perceptions of safety ethical espoused and enacted values and their relationship with PFB. To shed light on this relationship, direct supervisor values(DSV) actsas key moderator. We build on the safety ethical values framework to measure two types of values and distinguished two types of PFB the internal PFB and external PFB. At the same time, ’suitable congruence’ is defined to describe the relationship between the two values. Drawing upon a survey of 267 miners in Chinese large state-owned coal mining enterprises, our results revealed that safety ethical values congruence had alinear relationship with internal PFB and a no-linear relationship with external PFB. Meanwhile, our findings demonstrated that DSV only had moderating affect on the relationship between values congruence and external PFB. So we continued to calculate the ‘suitable congruence’ scope in tested enterprises. Furthermore, this study gives some relative management proposals and suggestions to improve miners safety ethical standards and to reduce coal mine accidents. Read More Read Less

Abstract The paper proposed a trapezoidal fuzzy numbers group decision making method based on attitude indicators, in order to solve the multi- attribute group decision making problem for the evaluation of the information given in the form of fuzzy language. Given the weights determining method of trapezoidal fuzzy number complementary judgment matrix under the case of the weight of each attribute weight and decision-makers... The paper proposed a trapezoidal fuzzy numbers group decision making method based on attitude indicators, in order to solve the multi- attribute group decision making problem for the evaluation of the information given in the form of fuzzy language. Given the weights determining method of trapezoidal fuzzy number complementary judgment matrix under the case of the weight of each attribute weight and decision-makers weight information are not entirely, and solved each attribute weight information according to this method; then introduced attitude indicators and put fuzzy language trapezoidal fuzzy number decision matrix into a decision matrix with attitude indicators. Use the incomplete decision making information to build target programming model to get the decision-makers weight to meet the objective function. Eventually, get the groups risk attitude and the programs comprehensive sorting situation by integrate the attitude indicators of decision-makers. And also, the paper verified the feasibility and effectiveness of the proposed method by a numerical example. Read More Read Less