Abstract:Dataflow computation can exploit high parallelism，but its overhead is great In this paper，the improvement of dataflow graph is discussed，a model of combining dataflow and control flow is presented，and a practical architecture SDS-1 according to DFGC is described. The SDS-1 can develop two levels of parallelism，compound function level and instrucion level. Finally，the performance of SDS-1 is analysed.

Abstract:The goal of our research is to design a computer architecture for AND-OR-parallel execution of logic programs based on the Horn clause subset of the predicate logic. We start from abstract level and move step by step towards concrete implementation details. The major contributions made in this thesis are: 1. OR-forest-a new method for describing the execution of logic programs. 2. PSOF-a process model based on parallel search of OR-forest. 3. PIM-PSOF-an abstract parallel inference machine based on PSOF model. 4. SES-PIM-a simulation and experiment system for parallel inference machine.

Abstract:In this paper the design problem of optimal input signals for identification of MA-model is solved successfully by means of the difference-set theory of combinatorics. It is necessary to point out that this kind of optimal input signals will be better than M-sequences and Plackett-Burman sequences.

Abstract:In this paper a new method of description of shape by a mathematical process analogous to diffusion is suggested. For the shape description the relationship of the points in the neig-hborhood of a boundary points of an object is considered regardless of its scale，location，and rotation.

Abstract:In this paper a method of reconstructing multifaceted body directly from the three-dimensional views without the solution of large equation group is discussed. It is possible to obtain an exact three-dimensional matrix and view without human interference using this method. It is necessary to take only about one minute to get projection view on IBM-PC computer.

Abstract:In this paper the application of the digital signal processing technique to radar reconnaissance is examined. The receiver adopted has two channels. Therefore it is possible to carry out the DFT of the received signals from FFT. After analysing the attitude information of the DFT and processing the phase information appropriately，we can get the frequency and direction of the radar.

Abstract:A set of inequality constraint conditions of the strength parameters is derived from the convexity of the strength criterion，which is expressed in a quadric form in terms of stress components. The constraint conditions can be used to identify the availability of the strength，criterion and they are helpful to measure the basic strength parameters. A geometric explanation to the strength criterion is obtained when the strength criterion is expressed in a principl stress form，which is an ellipsoid，such as elliptic， paraboloid，revolutionary paraboloid，e1liptic cylinder or cylinder etc.

Abstract:In this paper，the thin wall stiffening shell is analysed by means of the finite element method，the element stiffness matrix of the bar with the variable axial force is derived，and the method dealing with cross-elements and boundary restraint is presented. The structure is synthesized by means of the full stress method. The pattern of the "synchronized" iteration is used in process of optimization for the elements that are controlled by the pressure stress. At the same time，the necessary geometrical restraint is introduced. The conclusion indicates that the weight for optimized structure is obviously reduced.

Abstract:The experimental analysis of a missile is made with the multipoint random excitation method by using general instrument and microcomputer in this paper. The results are compared with that of single-point random excitation method and stable input sine dwell method. A new explanation and a new derivation of Bendat's formula is given.

Abstract:The design of FMS is different from that of ordinary mechanical manufacturing system，the design of which can be carried out by some mathe-matical formulas. The FMS projects can not be optimized by physical test and they can be tested only by simulation. In this paper，ACD diagram is used to analyze and to model FMS. Through an example，the FMS model set is simulated by language GPSS. Some problems in the design of FMS are presented and the foundation to solve them is found.

Abstract:In this paper a new coding technique for digital image is presented，the definition of the Quadcode is given and its properties are discussed. The comparison of the storage efficiency between Q-Code and Q-Trees is made by means of examples. The advantages of the Q-Code have been shown. The representation of images using sets of Q-Codes and the arithmetic of the Q-Code sets，related to image analysis are also presented.

Abstract:The average energy of configurations and the one-election energy eigenvalues of negative ions N^-,O^-, F^-,S^-,Cl^- are calculated by using relativistic X_α method. The unstability problem for the calculation of negative ions with relativistic X_α method is discussed，and the method of solving the unstability problem is given in this paper.

Abstract:In this paper a method for the approximative reasoning is suggested and the structure of the knowledge base of a Medical Diagnosis Expert System is introduced in detail. The knowledge base is composed mainly of the matrices of fuzzy relationships and reasoning rule sets. The approximative reasoning is realized through the fuzzing of reasoning rules. Thus the problems of inaccuracy in the medical diagnosis is well solved.

Abstract:In this paper the realization approach of X-band four-frequency multiplier microstrip structure is discussed mainly. Using described method，the simple microstrip shapes can be obtained by the simple tuning. This frequency multiplier may be used satisfactori1y as the output-stage some velocity radar.

Abstract:A cylindrical turbulent axisymmetric jet is studied using a modified K-ε model. Both mean and turbulent quantities are presented in comparison with the experimental data. The theoretical values obtained show that such a model may be used for the common engineering calculation.