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Simulation models of SiC power transistors (normally on/ off SiC JFET, SiC MOSFET) are developed by means of data driven modeling with consideration of thermal effects. Temperature effects on electrical characteristics of SiC power devices are obtained from simulations and tests of static and dynamic characteristics, which solve the problem of no consideration on temperature effects when comparing...
A data driven model with thermal effects is proposed for normally-off SiC JFET in this paper. The novel feature of the model is that it saves the trouble of obtaining the physical parameters. Besides, the effect of temperature on SiC JFET performance is taken into account. It is important because the physical parameters on materials and dimensions of a particular SiC JFET device are difficult to be...
A data driven model with thermal effects is proposed for normally-off SiC JFET in this paper. The novel feature of the model is that this modeling method saves the trouble of obtaining the physical parameters and the temperature of SiC JFET is taken into account. These are particularly important because the device's physical parameters on materials and dimensions are hardly to be obtained and temperature...
Human-computer interface of turret currently is not friendly enough because of the mobility, styles of input and output limitations and computing ability. But contexts of human-computer interaction are not considered comprehensive in the process interface design. Therefore, it's vital for the operational efficiency to import a way of human-computer interaction for interface based on context-aware,...
The functional vulnerability of Supervisory Control and Data Acquisition (SCADA) Network is investigated in this paper. To describe the functional behavior of SCADA network, a simple dynamic model is used. Then, two SCADA networks with typical structure are reproduced according to the ones in the real world. The functional behaviors of two SCADA networks are investigated, which show that the star...
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...
Analyzing Characteristics and change trend of consumption structure, that will grasp changes in laws and trends of resident consumption, so it is of great theoretical and practical significance. In this study, we use consumption situation of rural residents in Jilin Province as the research object state and establish the demand function model of Expend Linear Expenditure System (ELES) to analyze marginal...
N-nitrosodimethylamine (NDMA) is carcinogenic. To estimate current risk of NDMA to human health in a given area, Level III multimedia fugacity model has been used to simulate the fate and risk of NDMA in environment. The calculated NDMA concentration in water which is strongly related to the disinfection by chlorination agrees well with that measured. The biggest bulk sink of NDMA is water, which...
Direct Solar Radiation (DSR) is one of the most crucial weights of Solar Radiation, and its quantity calculation is very complex due to the influences of local topographical factors and terrain inter-shielding. DEM data as a representation of the complex terrain and multiplicity condition produces a series of topographic factors such as slope and aspect, etc. Based on DEM data and meteorological observations,...
This paper presents ongoing work on using projection pursuit regression model to predict object-oriented software maintainability. The maintainability is measured as the number of changes made to code during a maintenance period by means of object-oriented software metrics. To evaluate the benefits of using PPR over nonlinear modeling techniques, we also build artificial neural network model, and...
Since the natural gas is clean, environmentally friendly and highly effective and its strategic status is increasingly prominent, it is in urgent demand to precisely predict natural gas consumption.In our country, a large number of models to predict natural gas consumption have emerged, but all with unavoidable limitations as any single model. So, a model which can integrate merits of each single...
The tracking of the weak aerial target (WAT) is very important for the air action. The missing of WAT is often occurrence due to the barrier in the sky. A new method for WAT based on the grey model is proposed to improve the tracking ability, when there is some temporary barrier in front of the target in the sky. The GM theory is used to forecast the position of the instantaneous missing target by...
Simulation of atmosphere environment is an important part of high-fidelity distributed battlefield simulation. The simulation applications of atmosphere need to establish dynamic run-time databases to response atmosphere data requests of other weapon realities in time. Technologies of main memory database (MMDB) can be used to meet the needs of real-time quality. In this paper, a dynamic run-time...
Aiming at the problem occurs when getting the distributed, heterogeneous and dynamic data in the engineering structure experiment, this paper proposes ESESGrid (engineering structure experiment and simulation grid) data acquisition system which based on self-adapting MAS technology and designs the registration and access of agent based on WS-management. In addition, owing to the time series characteristic...
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