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Through the study on the vessel scheduling problem of the port, it is found that the navigational environment is complicated near the channel area. In order to provide better services, the traffic flow information should be clearly managed. This paper builds a vessel traffic flow forecasting model based on Back Propagation (BP) neural network, and validates the model with some Automatic Identification...
Cellular automata (CA) provide an excellent method for modeling military complex systems. This paper discussed the principles, methods, characteristics, and applicability of CA and focus on the applications of cellular automata in military complex systems. Two simulation experiments are given to demonstrate the effectiveness of CA in simulating combat and pollution spread caused by weapons of mass...
Fast filtering algorithms can highly improve the narrow-stage performance of continuous collision detection (CCD). The algorithm by Tang et al. [1] is a fast solution to this problem, which casts it into a geometric constrain. We show that, after slight modification, this earlier work is interestingly equivalent to the recent result by Zhang and Liu [2] that is directly derived from algebraic theorems...
With the development of Internet, the amount of information on the network increases, and the content security issues on the network become more prominent. Through the study of web information filtering technology and a variety of implementation methods, combining with UCL (uniform content locator) that is a new innovative technology concept, we discuss and design a new webpage filtering scheme, and...
We present a new bounding volume structure, k-IOS that is an intersection of k spheres, for accelerating proximity query including collision detection and Euclidean distance computation between arbitrary polygon-soup models that undergo rigid motion. Our new bounding volume is easy to implement and highly efficient both for its construction and runtime query. In our experiments, we have observed up...
With the development of network technology in modern society, various industries have raised their own standards, the standard test is the test information generated by the system description model to xml standards to judge whether the information system standards. This paper proposes an agile software development method in the domain of digital standard test: component-based product line, and designs...
Electronic Commerce has offered a convenient way for people to go shopping on the Internet. However, it is difficult for Internet customers to select a valuable item from the great number of various products available on line. When we use a keyword and search in a EC website, the ranking algorithm of products is usually based on statistics or simply the shop manager's preference, which does not fully...
Light interaction considering scattering and absorbing is implemented with some simplicity physically. Dead reckoning based calculation is used during the implementation. After the 3D cloud being integrated using cellular automata clouding modeling method, experimental results show that it has realistic effect with fast rendering speed on a common PC. The method in this paper is very suitable for...
In order to avoid the sudden events and deal with the safety problems in time in practical navigation, the simulation models of route planning and route monitoring are put forward, the theory and the algorithm of indicator kirge are applied in the research of route planning so that the water depth of anyplace is computed by fitting curved surface of sea-bottom terrain, the way of human-machine interaction...
A novel method for simulating large-scale, nearshore sea surface is presented. The whole simulating process can be divided into two phases: pre-computing phase and real-time computing phase. In pre-computing phase, wave parameter distribution of a simulation area is worked out using the SWAN (Simulating WAves Nearshore) model on a coarse grid. In real-time computing phase, a small height field surrounding...
Workflow management systems and workflow modeling and processing techniques have been studied and used for complex business processes. In this paper, we present a Web service system that provides an environment for specifying the flow model of the composite service and the user's constraints on the composite service. We adopt our previous work on workflow modeling and scheduling under resource allocation...
When the sample data of zinc mineral body is lack, it is essential to build one visualization model to compute and analyze its reserve by use of its associated copper sample data. In order to calculate the reserve of zinc mineral, the sample data in standard distance is used to compute its experiment variogram and analyze its corresponding structure. Thus, its visualization model was also established...
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