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In this paper, the fast field program based on propagator matrix is used to model the acoustic field of airborne source in the air and underwater. The main characteristic distributions and the changing law of the airborne source radiated noise through the air-sea interface is analyzed in vertical direction at a certain distance and in level direction at a certain depth. It is of significance to further...
Passive sonar buoy simulator can provide supports for the development and acceptance of sonar buoy signal receipt-equipment. In the paper, the generating mechanism of underwater acoustic target radiated noise is analyzed. Then spectrum analysis methods are studied and the analysis of measured underwater acoustic target radiated noises is carried out. Afterward the passive sonar buoy simulator is presented...
The beer recipe optimization is a effective way for reducing the brewing enterprises. Because the recipe optimization belongs to NP-hard problem, It is difficult to obtain the global optimal solution for the traditional optimization algorithm. Though ant colony optimization (ACO) is suitable for solving the combinatorial optimization problems, it still has weakness in solving continuous optimization...
Temperature rise in Xiangshan-Harbor estuary caused by plants' thermal water discharging is numerically studied by using three-dimensional ocean model FVCOM. A surface heat flux calculating method is introduced into the model, in which diurnal and seasonal variation of solar radiation is considered to better describe the heat exchange between sea and air. The temperature rise field is then calculated...
Doppler weather radar has become one of the important means of detecting and monitoring method for meteorological department. Doppler weather radar is widely used in the analysis of convective weather detection, diagnostic research, quantitative precipitation estimation and now-forecast, etc. Most applications of rain field observations by radar required to be able to identify convective and stratiform...
Some problematic cases, such as collective defeat and odd-length defeat cycles, which tend to be handled incorrectly by all of the current theories of no monotonic reasoning, including default logic and circumscription, have been well recognized in the literature. Although a powerful argument-based approach in the automated defeasible reasoner OSCAR has been proposed and they claim that this theory...
Just as the Web is shifting its focus from information and communication and emphasizes the need to reuse of knowledge as a huge distributed knowledge base, the semantic grid in which information and services are given well-defined meaning extends the current grid to enable software agents, users, and programs to work in cooperation. How to process the different sources of information, in particular,...
Nowadays, more and more research has focused on the trust management of the Semantic Web. Some mature technologies from many fields such as multiagent systems, social network analysis and artificial intelligence have been introduced to this field. However, some unique characteristics of the Semantic Web are more or less ignored. In this paper, we try to explore the semantic aspects of the trust management...
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