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The location problem of logistics center is the key process of logistics distribution, in order to improve the accuracy of the location of logistics center, this paper according to the parallelism and characteristics of global optimization of genetic algorithm. A method based on genetic algorithm is proposed to solve the problem of logistics center location, and set up with the minimum total cost...
In this paper, the algorithm of Tiled Directional Flow (TDF) is improved for real-time rendering river surface. To represent the reality of river flowing, the approach for building the river velocity field based on the procedural method is proposed. And the velocity field can be used to generate the flow texture of the TDF algorithm. With combining GPU, GLSL programming and LOD technique, the large...
We propose a novel joint probabilistic model that correlates a new probabilistic shape model with the corresponding global intensity distribution to segment multiple abdominal organs simultaneously. Our probabilistic shape model estimates the probability of an individual voxel belonging to the estimated shape of the object. The probability density of the estimated shape is derived from a combination...
In the dynamic and complex market environment, the conventional conveyor assembly line can no longer meet customers' demands effectively. The way of dismantling the conventional conveyor assembly line and redesigning a flexible manufacturing system has been attracting an increasing amount of attention both in the academics and production practices. Such an advanced manufacturing system simultaneously...
For perfecting the oil spill simulation view system of marine search and rescue simulator, based on the tidal current numerical calculation, considering oil movement mathematical models, designing a collision detection algorithm between oil and island, using texture rendering and plane refraction technologies of Open Scene Graph, finally the simulation and 3D visualization of oil spill on the sea...
STCW78/95 convention proposes new requirements for operation training of special purpose ship, so it becomes vital and necessary to realize semi-submersible heavy lift vessel handling simulator. The visualization of semi-submersible heavy lift ship handling simulator can be realized under the Visual C++ and OSG visualization development environment. The core technologies are described in details such...
Search and Rescue (SAR) at sea is one of the most important humanitarian activities and also an extremely complex operation based on the coordination of each unit within search and rescue event. Taking real equipments to do SAR rehearsal has many disadvantages such as high cost and great danger. In order to overcome these shortcomings and enhance the flexibility and the collaborative ability of each...
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...
A new method for nearshore wave simulating is introduced. Firstly, parabolic mild-slope equations are set up according to the simulation area and input waves. After solving the equations, the integral wave parameters such as the root mean square wave height, the peak wave period and the mean wave direction can be calculated. Instantaneous surface elevations can also be obtained from the model. Then,...
This paper introduces a new method for simulating nearshore wave. Firstly, elliptic mild-slope equations are set up according to the simulation area and input waves. After solving the equations, the integral wave parameters such as the wave height, the surface elevation etc. can be got. Secondly, the integral wave parameters are composed into a float texture. Finally, a viewpoint-dependent sea surface...
The paper describes a nonlinear robust tracking control strategy and its on-line implementation for servo-controlled pneumatic systems. The pneumatic actuator system is initially transformed into a linear system description and then a robust servo/tracking controller is developed. Since there exists an inverse transformation for the new co-ordinate system, the designed servo control is transformed...
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