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Oscillating water column wave energy converter is widely used in the world. The impulse turbine is recently employed for the bi-directional mechanical air power into electricity power. The 2D and 3D numerical model is established in the present paper to investigation the operating performance. The proper mesh style, turbulence model and numerical solutions are employed to study the velocity and air...
In video games, it's very important to model a virtual agent with motivation variables. In previous researches, a virtual agent's motivation variables are always static. An evolvable motivation system for a virtual agent is set up, priority sequence of an agent's behaviors is decided by the priority sequence of its motivations, the priority sequences of an agent's motivations are determined by genetic...
Graphics cluster based parallel rendering has been widely used in computer aided design, scientific visualization, geometry scene rendering, virtual reality and so on. The key to high performance on graphics cluster is rendering task distribution strategy. According to multi-stream based data organization in Direct3D, this paper has presented sort-first multi-steam based rendering task distribution...
With the coming of information age and the extensive application of virtual reality technology, there is a growing concern to e-learning. In the field of virtual reality technology, 3D e-learning for children is becoming a hot topic. In recent years, traffic accidents occur frequently in China, causing a large number of casualties and property losses. Because of children's special characteristics,...
Oscillating Water Column (OWC) device has been widely employed in the wave energy conversion. Wave Focusing Device (WFD) is proposed to improve the operating performance of OWC chamber. In the present paper, a 3D Numerical Wave Tank (NWT) using two-phase VOF model is utilized to simulate the generation and propagation of incident regular waves. The NWT consists of the continuity equation, the Reynolds-averaged...
A pre-processing technique for potential-visible set of the region of the great 3D scenes by using the highly processing power, parallelism and general-purpose computation of GPU is presented. The precision of scene segmentation and maximum error are used to adjust the computing speed and the accuracy of the potential visible set and the required storage space, which could deeply decrease the cost...
The ZnO quantum dots prepared via the solid-state pyrolytic reaction were studied. Our studies revealed the surface of ZnO quantum dots modified by amorphous ZnO. The as prepared quantum dots with sizes varying from 2-3 nm yields a blue shift about 0.15 eV and shows an enhanced ultraviolet emission of 3-5 times over that of high quality ZnO nanoparticles.
The purpose of this research is to develop a practical system for building damage detection in dense urban areas after natural disasters such as earthquakes, typhoons, and tsunamis. A novel approach is presented that allows real-time building change detection using high resolution aerial images and existing 3D building data. The developed system contains two major processing modules: inflight processing...
A method of developing Web3d-based children's education software is presented, on the basis of constructivism for learning, children like to learn knowledge in entertainment manner, and 3D virtual environment is suitable for children's exploration. The method is illustrated with three examples, the first is a virtual observation experiment for sun, users can handle a virtual telescope to watch a virtual...
An intelligent virtual avatar is very useful in an e-business website, it can attract users to explore more business information, how to construct the architecture of an intelligent virtual avatar is a very important topic for a friendly interface of e-business. Based on current research on cognitive science, architecture of an intelligent virtual avatar is presented, and a computational cognitive...
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