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To effectively control botnets, a study on modeling and analyzing the propagation characteristics of botnets has been lasted for many years. Due to the real network has scale-free properties, it is unrealistic for mainstream propagation models to describe how the bots spread based on random network. Hence, in this paper, we take two key factors which can reflect the scale-free feature of actual Internet...
Component composition method has always been an essential issue in the field of modeling and simulation (M&S). Discrete Event System Specification (DEVS) is a traditional way to solve this problem. However, as the advancement of information technology including grid and cloud, DEVS encounters its shortcoming in the aspects of network reuse and composition definitions. To tackle this issue,...
Cloud simulation makes contribution to simulation system by providing on-demand, everywhere simulation services. Load Balancing is a fatal issue for Cloud simulation for the reason that an overloaded node may cause slowdown of the whole system. To acquire high performance of Cloud simulation, this paper proposes a two-stage load balancing method. The first stage aims to virtual machine (VM) load balancing...
We demonstrate a response-based motion generation system capable of naturally response to the external disturbance while tracking a reference motion. Our approach associates the data-driven motion synthesis technique with the response simulation result. For a rapid approximation of the character response, we introduce both the simplified joint model and skeleton model for simulation, and adopt forward...
For a deficiency of classic algorithm in constructing motion graph, we propose an improved algorithm and further apply motion graph to the intelligent obstacle avoidance of virtual human. First of all, we introduce an approach for acquiring real human motion data by our active optical motion capture system and solving some related problems we have encountered. Secondly, we present and analyze the...
Based on the combustor model and experimental data of Ref.2, numerical simulations of three different combustor geometries presenting three situations with solid fuel regression were conducted using FLUENT software. The combustor inlet airflow had a Mach number of 1.5, total temperature of 1270 K and total pressure of 30 atm. The HTPB fuel and a global one-step reaction mechanism were used. The results...
Cold flowfleld of pitot SFRJ with three different nozzle throat diameters were simulated at M4.03 and M3.0 by FLUENT software. The flowfield characteristics and engine performances were obtained and analyzed. The results indicate that pressure data obtained by simulation have an overall agreement with those got by experiment. Pitot inlet at design or ideal mode operates with a tiny subcritical position,...
According to the basic theory of grey system correlation space, a type of new grey incidence degree model is constructed by starting from the perspective of n dimensional linear space. This paper makes a research about some properties of the incidence degree and compares this incidence degree with Deng's. Results indicate that this incidence degree has the same properties with Deng's; and it also...
Along with the development of society, traffic jams are becoming the major issue in cities traffic system, since they are not only consuming much more fuel but also polluting air of cities. In this paper, we take into account the models which totally asymmetric simple exclusion processes (TASEPs) with single-lane with a double-lane section in the middle in the case of parallel-sequential update. Using...
This is where the abstract should be placed. Hand motion of maintenance stuff is one of the significant aspects in virtual maintenance applications. The method to generate Hand motion in both real time and continuity was studied. A virtual hand model with intrinsic anatomic structure was firstly presented and secondly, based on analysis of various virtual human motion controlling algorithms, a prioritized...
Military task programming is an important foundation in military warfare simulations. Presently, scenarios in joint military warfare are built not so good to meet the requirement of aggregate-level warfare simulations and the requirement of intelligent decision in real time simulations. A method based on FSM model of aggregate-level military warfare decision-making and vehicle-level action decision-making...
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