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Using simulation to study the behavior of large-scale data storage systems becomes capital to predict the performance and the reliability of any of them at a lower cost. This helps to take the right decisions before the system development and deployment. OGSSim is a simulation tool for large and heterogeneous storage systems that uses parallelism to provide informations about the behavior of such...
In this paper the adaptive mesh model is studied. First we introduce the 3 subdivision method which is already exist. Second, in order to make the simulation result more realistic and reasonable, we extend the traditional scheme and apply two different subdivision schemes on the triangular mesh. At last, a new mesh coarsening method is proposed, with the help of this method, we build a extended adaptive...
Carbon Nanotubes (CNT) and graphene as a whole have been of interest since their discovery due to their unique properties. These include, but are not limited to: high electron mobility in room temperatures, relatively high thermal conductivity and possibly the highest resistance to mechanical stress. Hence, it is important to properly model structures and systems that might use graphene in future...
Polycrystalline materials are solids that are made up of crystals, also called grains, that have varying sizes and orientations. Materials of this class are used in many applications, including steels, films, and electronic interconnects, to name just a few. The factors that influence how the grains in a polycrystalline form are not well understood, although materials scientists and engineers have...
This paper aims to give a better performance of the cascade control for a multi process station (Level & Flow) by implementing Fuzzy controller instead of the conventional controllers. Comparison of simulation results of, cascade control (primary and secondary controllers) of process with various combination of primary and secondary controllers. Combinations are, primary and secondary both as...
This paper presents a methodology of performance assessment for precision guided system. Hierarchical performance index system is established with a tree-like structure. Scheme of performance evaluation platform design is presented with four main parts, such as process management system, vehicle guidance simulation system, data processing system, and evaluation system. Based on the scheme, performance...
In order to obtain a better human-machine engineering implementation effect and get a faster feedback during the bridge designing, the paper suggested a virtual simulation and evaluation method. And by using of the software Visual C++, MultiGen and Vega, an evaluation simulation system was also built. Such a system can display the whole layout of the bridge, evaluate the key human-machine designing...
In order to obtain multiple different simulation results, parameters need to be modified constantly during the simulation experiments. The simulation interactive technology based on interactive database (IDB) file is very difficult to operate for users, inducing its low¨Clevel simulation running efficiency. This paper introduced a simulation interactive technology based on parameter file with variable...
Traffic system shows a very complex and stochastic features, but it seems to be simulated successfully by cellular automata (CA) models. Various models have been developed in order to study and understand traffic behavior and network traffic situations. In this study, the relationship for speed and frustration index is simulated by CA under multi-class user traffic conditions. Acceleration rule, slow...
Workflow simulation is a valid technique backing up process improvement. To this day, workflow model simulation is still a weak segment. Based on the research on workflow simulation technique, this issue carries out a way of business process simulation based on workflow, and offers the realization of workflow simulation mechanism supporting business process based on virtual running environment, finds...
Huge data system applications require storage of large volumes of data set, and the number of such applications is constantly increasing as the use of computers extends to new disciplines. At the same time, the proliferation of communication networks is resulting in massive transfer of data over communication links. Compressing data to be stored or transmitted reduces storage and communication costs...
Sickbed arrangement is an important part of daily management in the hospital. Since the service time for different type of patients varies, the queuing system here, with multi-random input flow, can not be solved accurately by using classical queuing theory. Based on the analysis of patient information, we apply the simulation method into the sickbed arrangement system, and take the average waiting...
Risk management of engineering project is a complicated uncertainty problem. Based on the theory of set pair analysis (SPA), stochastic simulation of triangular fuzzy numbers, herein, a novel analysis model for the project risk management was discussed. A concept of multi-element connection number of the set pair was introduced to express the hierarchy and fuzziness of membership between the evaluation...
In order to get rid of the limit of traditional methods and provide a decision making reference for the supervision of securities organizations and the risk control of investors, A novel model based on SOM2W network (SOM with 2 winners self-organizing map) is proposed for assessment financial performance of the listed companies. In addition, a tabu-mapping method is proposed to avoid that the same...
One way to minimize threats in P2P system is to exploit reputation to help evaluate the trustworthiness and predict the future behaviors of peers. In this paper, a set of parameters are identified for describing the trust of a peer. And a trust model based on fuzzy techniques is presented. The trust model uses Amplifier of Malicious Behavior (AMB) to intensify malicious behaviors and helps peers identify...
This paper based on four key abilities of the Prognostics and Health Management (PHM) System including the abilities of fault detection, fault isolation, fault prognosis and prognosis of the remaining life, analyzes and constructs a framework of the PHM quantitative requirements, and defines the quantitative assessment emphasis of the PHM abilities. Targeting these quantitative requirements and proceeding...
Workflow Support System(WSS) is an information system intended to manage the cooperative work following a workflow description aiming at improvement of organizational function. To archive the goal, WSS tries to manage people's work, it also have to be considered that the working people have various condition such as work time and skill level. This research proposes to use simulation of WSS to evaluate...
From the overall performance of simulation grid system, it aimed on that how to determine balance load include mission and traffic, according to analysis relevant performance parameters which related to the bottom of the grid physical resources and the federate application. It is provided that the performance assessment methods with simulation grid system based on grey cluster and not only to prevent...
In this paper, based on Anylogic6.0 simulation software, some simulation models of queuing systems with different queuing disciplines are established, including first come first service, last come first service and random service. Compared with the theoretical values, the accuracy of the experiment data is verified. Finally, with comparative analysis of experiment data, we show that under a special...
It is necessary to evaluate the operational capability of the weapon equipment based on combat-simulation, however, the simulation data is so isomerous that it is difficult to make evaluation model. Pointing to this problem, a comprehensive method based on the TOPSIS, AHP and SIMULATION method (T-A-S) is built to evaluate the operational capability of weapon equipment. An example about the operational...
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