最新刊期
卷 ， 期 1 ， 1990
- 摘要：This paper presents a continuous VQ clustering （CVQC） algorithm for realtime speech recognition, which incorporates the temporal information of speech into both training and recognition processes. In comparison with the conventional DTW and VQ methods, this new algorithm delivers faster training and recognition speed and smaller codebook size while still retains merits of both. Realt-time implementation is emphasized in the design of sophisticated algorithms. And a custom available voice controlled computer command input system based on CVQC is also introduced.2|25|1更新时间：2025-12-08
- 摘要：A nonlinear RL-Varactor circuit is analyzed with the Melnikov-Holmes method. The paper presents a route to chaos and gives the threshold of subharmonics and chaos analytically. The conclusions are in agreement with experiments.2|34|1更新时间：2025-12-08
- 摘要：A new robust sequential detection scheme-Double Sampling method is presented in this paper. Performance analysis, optimum parameter design procedure and computer simulation are given. Compared with the classical sequential detection scheme, double sampling approach is quite simple and effective for detection.2|40|1更新时间：2025-12-08
- 摘要：A new method has been developed which is suitable for calculating the electrical potential of a point emission source including space charge effects. The method is based on the surface charge method, in which the space charge effects have been considered. A simplification against the structure of point source has been made. In order to avoid the time-consuming computation in the surface charge method, a hybrid method, called "Surface Charge-finite difference" method, has been presented as a supplement. The comparison of numerical and analytical solutions concerning a spherical capacitor has been given in the paper. The method has been applied to calculate the emission feature of a liquid metal ion source. It has been shown that the method is superior to the previous methods in saving the computer time and computer memory and in calculation accuracy.2|27|1更新时间：2025-12-08
- 摘要：The near fields of electromagnetic radiation systems are calculated by using the Finite-Difference Time-Domain （FD-TD） method. It is proved by the results obtained in this paper that the FD-TD method is useful in this calculation. To verify the correctness and accuracy of this method, several kinds of radiation systems are calculated, including the radiation field with structure-complicated Annular Phased Afray（APA）. The distribution of the radiation fields in the central space are obtained and compared with the experimental results.3|124|2更新时间：2025-12-08
- 摘要：The equation governing the mean field is derived for the half-space strong fluctuation random media by the strong fluctuation wave theory and the effective permittivity is given under the small scale fluctuation. approximation. It is shown that the effective permittivity is heavily influenced by the interface effect within a transition layer beneath the interface. This effect must be taken into account in calculation of the electromagnetic wave reflection and deflection at the media interface.4|34|0更新时间：2025-12-08
- 摘要：An intelligent operating system （IOS） as the next generation operating system is proposed in this paper. The concepts, functions and architecture of the IOS are introduced. In addition, an experimental IOS called KZ1 is described in detail.4|50|1更新时间：2025-12-08
- 摘要：A vector-structure information scheme is presented for explicit representation of topological relations between spatial objects. In contrast with the traditional geological information systems, which mainly use geometrical coordinates to represent points, line segments, or polygonenclosed areas, the information concerning the topological relations, such as containment, bordering or crossing between geometrical objects, can be directly acquired in the proposed systems. Algorithms for operations on geological/geographical maps are also discussed.2|121|0更新时间：2025-12-08
- 摘要：The analysing and design ing theory of the conformal slot array on the large conducting cylinder covered by a dielectric layer is studied. The moment method is applied to solve the integral equations of the tangential fields. The concept of quasi-symmetrical array is proposed so that the order of the linear equations is reduced byhalf. The equivalent network parameters and pattern of element and array are derived. The amplitude, phase, impedance and resonance characteristics of the slot are discussed. The synthetic design method for such array is given and the computer aided analysis and design are realized. The experiments have verified some of the results.2|80|1更新时间：2025-12-08
- 摘要：A new method to reconstruct the 2-D image of the surface or section of ano bject from reflected signal data is\discussed in this paper. The basic imaging processing equation and fast realizing algorithm are derived, and some computer simulation results are given. The imaging method may be not only applied to the radar imaging for partial terrain area, but also to reflection mode ultrasonic CT.2|26|1更新时间：2025-12-08
- 摘要：A new segment model method is proposed in this paper. Prony method is extended to analyse time-delay signals by using a series of delayed complex exponential functions. Segment method is used to simplify delayed problems into non-delayed ones. The purpose of reducing orders, calculating conveniently, and data compression is achieved.A possiblity of solving complicated delayed signals, extracting new characteristics and making use of pattern recognition is provided by the method mentioned in this paper.2|23|1更新时间：2025-12-08
- 摘要：The eigendecomposition-based MUSIC technique of Schmidt has received considerable attention since 1980’. Evans, Shan, and others applied MUSIC algorithm to the case of coherent sources by using spatial smoothing technique across the array.References[7]、[10]、 [14]introduced a general procedure to estimate low-dimensional subspace for the high-resolution of coherent signal sources. This paper studies those high-resolution methods statistically.2|57|1更新时间：2025-12-08
- 摘要：In 3-D motion estimation problem in order to determine motion parameters of rigid object in space, we use planar patch motion model and successive perspective image to estimate motion parameters including rotation matrix and translation vector with a scale factor. This article will give a linear algorithm and simulation results by computer.2|15|1更新时间：2025-12-08
- 摘要：Through the numerical analysis of reflection characters of plane multilayer media, we find that multilayer media have the frequency absorbing character （FAC）, implying that its reflection corfficient is zero or minimum at some certain frequency called absorbing frequency （AF）. And there exists some relation between these frequencies and the depth of the interfaces of layers. According to this relation we proposed that the depth of interface can be estimated by zeroes or minimums of reflected wave spectrum and proposed a new method to compensate the attenuation of reflected wave caused by lossy medium. The analysis method in this paper can be applied to the sounnding of earth strata’ s depth.2|88|5更新时间：2025-12-08
- 摘要：The composition of the residue that may appear on etched surface of （100）orientated silicon using Ethylenediamine-Pyrocatechol-Water（EPW）solution has been determined. It has been found by experiments that the residue formation is dependent on the solubility of the normal reaction product in a certain composition of EPW solution. The pyrocatechol content of EPW solution affects the solubility obviously. The condition for residue formation is dete-mined. Potential methods for preventing residue and forming etched silicon surface as a mirror shape are explored.2|52|4更新时间：2025-12-08
- 摘要：An efficient algorithm for fault diagnosis of nonlinear d.c. circuits is presented in this paper. Special excitation which screens the faulty branch can be found rapidly by using optimization method. In this method, the test to malfunction circuits and the calculation for the output at nominal circuits port are made alternately. By checking the response of the branches in nominal circuits to the special excitation, the fault can be located.2|49|9更新时间：2025-12-08
- 摘要：In this paper, the basic concepts and main characteristics of neural networks are introduced. The history and motivation of its research are reviewed, and the fundamental principles of a neurocomputer and a biomemory are discussed. Finally, the frontiers of neura network researches are reviewed.2|263|5更新时间：2025-12-08
- 摘要：A quadrupole field is often used in a mass-spectrum analyser and has never been used to analyse energy of charged particles. This paper expounds in detail the possibility that quadrupole field can be used as an energy analyser and describes its geometric structure, working principles and basic formula. Expressions of the passing energy, analyser constant, and resolution are given. Finally, the applications for the quadrupole energy analyser are also introduced.2|43|0更新时间：2025-12-08
- 摘要：A new approach which exploits the distribution properties of speech signal for vector quantization of speech signal is proposed in the paper. It greatly reduces the computational complexities in the design of vector quantizer and the procedure of quantizing.2|11|1更新时间：2025-12-08
- 摘要：In referenced[1], cyclic and linear graphs were proposed. In this paper, cyclic and linear sequences are presented. The properties of cyclic sequence are thoroughly discussed and extent of maximum length of cyclic sequence is given. Whatsmore, an approach is also found to get the maximum length linear sequence.2|17|0更新时间：2025-12-08
- 摘要：A new method for calculating SC network sensitivity, group delay and group delay sensitivity is presented in this paper. The new method has advantages of less storage, higher speed and easier programming.2|34|1更新时间：2025-12-08
- 摘要：The concepts of the reducible cutset and reducible loop are presented. By judging whether there exist a reducible structure and zero state structure in a passive network and their positions relative to the input, it is possible to decide whether or not there exists the linear correlation state. Finally, the degree of complexity is discussed.2|26|0更新时间：2025-12-08
- 摘要：<正> 第二届国际固态和集成电路技术会议于1989年10月22日至28日在北京香山饭店召开。来自美国、苏联、日本、南朝鲜、西德和中国等6个国家220多名代表出席了会议。中国科协副主席、中国科学院学部委员林兰英教授任本次会议主席。中国半导体学术界知名专家大多数都出席了这次会议,有老一代科学家谢希德、王守武等,有当代专家李志坚、黄敞、黄振嘉、王阳元等。有关中国领导机关:国家科委、机电部、中国科协,国家自然科学基金会、北京电办等单位领导也到会表示祝贺。2|14|0更新时间：2025-12-08
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