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MapReduce has emerged as a popular programming model in the field of data-intensive computing. This is due to its simplistic design, which provides ease of use for programmers, and its framework implementations such as Hadoop, which have been adopted by large business and technology companies. One significant issue in practical MapReduce applications is data skew: the imbalance in the amount of data...
This paper studied the modeling and simulation of the public opinion propagation in the small-world network. The public opinion information propagation characteristics were firstly analyzed, and different states of the people in the propagation environment were proposed. Based on that, this paper constructed the public opinion propagation model based on the agent modeling method, and proposed the...
In RBAC model, a user cannot obtain part permissions of a role, and a role cannot inherit part permissions of another role. The set of permissions cannot be obtained EPSET1 and the set of permissions cannot be inherited EPSET2 are introduced, a fine-grained access control based on RBAC model is proposed in this paper. The algorithms for solving the set of permissions belongs to a role or a user are...
High-Altitude Platform (HAP) is the most promising infrastructure for wireless communication in the near future. An essential problem need solving for the design of HAP communication systems is to establish an effective channel model for predicting the characteristics of the communication link. There have been many papers on this problem and several channel models have been proposed. The main work...
Some kinds of generalized convex function are defined, which generalize some of the present convex functions. In the framework of these new concept, a Mond-Weir type dual for a class of fractional programming problem is considered. Appropriate duality results are formulated. The results obtained not only provide a measurement of sensitivity for given problems to perturbations, but also can be apply...
The spindle is an important part of a CNC machine tool, and it is very significant to study how to simulate the deformation of the spindle accurately no matter in theoretical or practical way. Traditionally, the boundary coefficients for simulation have always been defined as some constants with the help of personal experience. This is the main reason for inaccuracy in the thermal model deducing....
Based on individual local observed information of the swarm, a fuzzy logical controller (FLC) of the attraction/repulsion function is built. Combining with the rate consensus algorithm, the swarming of the separation, cohesion and alignment is achieved. Based on the optimal controller theories, a capability target is used to measure the states of the system. In the computer simulation, it is shown...
Government business model (GBM) is used to depict business processes of governments. It includes three basic models, which are process model, organization model and resource model. But these three models can not depict the collaboration relation between the infrastructure elements (including organization model elements and resource model elements) or the information flow in a government business process...
A large-scale multivehicle model is presented. Based on individual local observed information of the swarm, a fuzzy logical controller (FLC) of the attraction/repulsion function is built. Combining with the rate consensus algorithm, the swarming of the separation, cohesion and alignment is achieved. By applying the connected network from the individual local perceived information, the aggregation...
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