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This paper discussed the control and synchronization for generalized Julia sets of the complex rational maps. First, it applied the optimal control function method on the Julia set of this system. This control method regarded infinity as a fixed point to be controlled. Then the controlled Julia set was shrinking with the controlled parameters. Second, it also studied synchronization for Julia sets with the same structure but different parameters. By substituting the response item for an item with the gradient control method, Julia set gradually changed to be another one. The simulations illustrate the efficacy of these methods by MATLAB. [ABSTRACT FROM AUTHOR]

With the increase in thermal and mechanical loads of engine, the higher standard is required for materials, and the more serious challenges had been taken for the design technique of engine. A new frame cylinder head is obtained by simulating 5 strengthened cylinder-heads. The load carrying structures, which are interdependent, are included by the stud bolts, the mounting support of fuel injector, the stiffeners of top ceiling and the fire face. The reliability test results of mechanical fatigue and thermal fatigue show that the structure of the cylinder head under peak pressure (20 MPa) is reasonable. [ABSTRACT FROM AUTHOR]

Three-dimension reconstruction based on images is one of important researches in computer vision. The reconstruction of single uncalibrated image of revolution surface is studied. The algorithm introduced by Colombo etc, which obtains three-dimension reconstruction and texture acquisition at the same time, is improved and a new approach of reconstruction is proposed. Firstly, plane transmission is used to compute the equation of the ellipse with respect to the point of image apparent contour line. Secondly, the construction of the object is recovered by computing the location and size of each cross section of the revolution surface according to the property of quadratic curve. The method of the reconstruction process is simple and keeps the overall structure of the revolution surface more correct. Simulation and real image experiments demonstrate the correctness and validity of the algorithm. [ABSTRACT FROM AUTHOR]

Numerical marine environment forecast has five characteristics which are multi-numerical models, multi-coupling processes, multi-result, more throughput and multi-user. Based on the above characteristics, the construction of the supporting platform of the marine environment forecast is proposed. An online coupler (HYCPL) for multi-coupling processes, a model library (HYLIB) for multinumerical models, multi-parameterization schemes and multi-statistical methods, a test and evaluation tool (HYET) for multi-result, a parallel access and storage tool (HYI/O) for more throughput and a one-click installation package (HY1KEY) for multi-user running environment are designed. All of these provide an effective and suitable supporting platform for numerical environment forecast system. [ABSTRACT FROM AUTHOR]