Abstract:This paper overviews the application of computational fluid dynamics in liquid propellant rocket engine，presents its trends of development in future.

Abstract:This paper presents the nonlinear dynamic mathematical models of the liquiel rocket engine with turbopump system, which can be used for the development of model-based fault defection. The Extended Kalmcm Filter (KEF) of the engine system has been designed and realized on computer. According to the statistical characteristics of the residuals, innovation-hased detection algorithm has been studied to defect the faults of the engine. The paper also discussed a few methods of reducing the expenses in KEF Calculation and the effects of belief factur and the degrees of freedom on the detection ability of the algorithm. The research provides the important basis for funther study of the model-based real-time detectim algorithm.

Abstract:In this paper the bending problem of thin rectangular elastic plates with rest-on edges is solved by general analytical solution of differential equations. The integral constants are determined by boundary conditions of the distributed point method. The square plates loaded symmetrically have been exemplified for analysis and calculation.

Abstract:This paper describes the behavior of thermal conductivity and thermal shock，and the effection of porosity of plasma-sprayed zirconia coating on LY12. It shows that good heat-isolation property and resistance to thermal shock can be obtained in best process parameter and thinkness of coating.

Abstract:Since the detecting area of any photodetector can't be zero，in reality the photodetection for an optical pattern is always an area-detection. If the intensity distribution to the left and the right of the characteristic point of the edge in the detected optical pattern is unsymmetrical then a mistake wil1 arise from this kind area-detection for the point position lead in detormining the position of the edge, and thus will produce the edge checkout error. But by means of the dynamic simulation for the photodetection of the optical pattern，the edge checkuout error may be previously calculated. The results of the simulation may be immediately used for the correction of the error. In this paper we take the photodetection of the Fraunhoffer diffraction pattern from a circular aperture for example，introduce the method of the dynamic simulation for the photodetection of the optical pattern.

Abstract:This paper describes a general CNC system，which uses AST386 as the controller，with a D C servo-drive system and software and hardware interface，the main components in this system are analyzied，and a classical PID control method is used to design the controller for this system，finally，the system output response and the controller performance are investigated based upon the experimental data of this milling machine system.

Abstract:In this paper，we change the method of inserting sampling points based on the old FSTRP，and adopt corresponding methods of data processing for the random error. These improvements make the separation results more exact，and get rid of the random error efficiently，aquir the curved line which has mors sampling points. This paper gives the algorithm and flow diagram of improved FSTRP. In accordance with the results of computer simulation and experiment，this method is feasible and reliable.

Abstract:In this paper，we propose a new method to merge the logic with the object oriented paradigm, We intend to introduce the typical concepts of object oriented systems in the logic paradigm，without losing its advantages as a declarative language. An extensive Herbrand interpretation has been given to interpret thd logic semantics and the object oriented semantics uniformly. Based on this method, we design and implement an object oriented logic system. In the end. the paper gives the object primitives of the system.

Abstract:Neural network mapping algorithm is an important research content in the field of neural network virtual implementation. The efficiency of the algorithm affects the virtual implementation of neural network. In this paper,the nature of neural network mapping，the neural network topology and the neurocomputing process have been analysised at first. Based on thorovgh consideration of load-balance and communication-cost，the thesis gives a general-purpose efficient neural network mapping algorithm. introducing the idea of timestep. Finally, the experimenting results of neural networks with different topologies are presented，which proves the generality and efficiency of the algorithm.

Abstract:The high-performance computer has initiated profound revolution in system simulation Digital simulation was thus brought into existence. The paper briefly disousses the development of the simulation computers and softwars. We investigate in detail the usage and future of digital simulation computer YHF1 and YHF2 in our country.

Abstract:The eigenmode dispersion on equation and eigenmode function of the rectangular waveguide filled on H-side with two dielectrics were obtained by solving the electric Hertzian potential equation. The eigenmodes were LSE and LSM，and the dispersion relation curves were also given.

Abstract:In this paper，the computation formulas are obtained by common methods and verified through the experiments.

Abstract:The definition of detection on defectives is given，which is suitable for both distinctive defectives and nondistinctive defectives. This paper is focalized on the scale model with two defectives under a bi-test de-vice. A search schedule is presented and proved that it is optimal by measure. At the end of this paper it is pointed out that the search schedule mentioned above is not uniformly optimal and a guess is made that an informational optimal search schedule maybe exists.

Abstract:A Monte-Carlo approach to the interval estimation of firm probability point based on real samples is presented in this paper. For ensemble with normal or lognormal distribution，the distributions of its parameters are found out，then its parameter samples are generated by the use of Monte-Carlo method. Based on it，the interval estimation of firm probability point under given confidence level is found through empirical distribution. A calculation example is given in this paper as well.

Abstract:Althrough uniform B-spline has convexity-preserving property，the curve doesn't in terpolate any control points. If we insert two new contrl points between two cosecute coutrol points，the new points will merge the old points to form a new set of control points. we show that cubic B-spline curve generated by the new set of points interpolates all old control points，and the interpolating curve is convexity, preserving. The local modifications of the curve are possible. Finally，two numerical examples are given.

Abstract:For any given sequence of data points, in this paper，a C¹ shape preserving interpo1ating quadratic and cubic sp1ine function S(x) by inserting some new knots are constructed by using Bernstein po1ynomai1s. The S(x) is simp1e and efficient to ca1cu1ate. Finally the monotonic shape preserving sp1ine function is a1so discussed.

Abstract:This paper presents an convex-preserving algorithm. Offest curves are approximated by using uniform cubic B-spline

Abstract:In this paper, we built a network model of max-min weight perfect matching in the bipartite graph with two edge weights,and give an efficient algorithm for it. Lastly, we solve a particular assignment problem.

Abstract:This paper studies the asynchronous iteration for solving X=F (X), where F is a contracting operator. We show that the extent of selecting the start vector differs from that of [2] theoreml. From the results we obtain a large extent method for asynchronous iteration.

Abstract:The paper presents some new ideas on the evaluation method of the productive enterprice's MIS economic efficiency. It analysis the process in achieving economice efficiency. The evaluation methods are introduced and some noficeable questions in evaluation discussed. The paper introduces some “effect coefficient” for the first time and various influences on the economic profit from different points of view after the operation of MIS.