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Two kinds of flat and stepped plates for ultrasonic radiators for the generation of high directional radiation in air are studied. The rectangular plate with free edges has no analytical solution. An approach for calculation of the directivity pattern of the sound radiated rectangular plate with free edges is developed based on the finite element method. It shows that the directivity pattern of the...
With the development of computational criminology and more powerful computers, mathematical modelling of systems representing some aspect of social crime and the analysis of the resulting numerical solutions is becoming more popular. The problems of social crime and criminal behaviour control are studied according to the system self-organization theory, and from the non-equilibrium crime system point...
Shock absorber is widely used on vehicle. The purposes of the shock absorber are to dissipate the energy accumulated by the suspension spring displacement, controlling thus the vertical motion between vehicle body and tires. The shock absorber has great influence on both ride and handling performance of vehicles, and a great many previous researches have been done on modeling and simulation of the...
On purpose of improving the research in extension intelligence systems when the knowledge in hand is not sufficient, an extension intuition model (EIM) based on human-computer cooperative is presented. From the initial intuition process space defined by the primitive experience, a series of interactive experience learning systems (IELS) with various reductive levels are created. For, each IELS, the...
The paper introduces a human-computer interaction reasoning system to the criminal investigation, and poses a skeleton of intuition automatic reasoning based on criminal psychology. Through the relationship construction of practical psychological characteristic pattern and on-the-spot model, it sets up a couple of psychological characteristic mapping and criminal behavior inversion models. The study...
In this paper, a novel computational scheme, local whole-information difference scheme (LWDS), was proposed to solve significant pseudo diffusion in recirculating flow zone during numerical simulation. In LWDS, the effect of all of the local around points on the control volume was considered to demonstrate the spatial characteristics of the flow, and the weighted value at each point is adjusted according...
The paper introduces a method of hesitate relationship mapping inversion (HRMI) to the acquisition of intuition information, and poses a model of intuition decision. Through the relationship construction of hesitate set and knowledge model, it sets up a couple of mapping models intuition information acquisition. The study shows that the premise of intuition decision is to set up patterns of intuition...
As for color applications, color shift for different display system is an extremely important issue in the color industry and visual communications, and the gamma of a display system is one of the anchor points for color appearance of images on the screen of a display. In this paper, color shifts for different gamma of a display system were measured in new uniform color space based the color appearance...
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