最新刊期
卷 ， 期 2 ， 1988
- 摘要：The reliability of the computer network is discussed from the point of view of task. A new definition of reliability is presented. Some definitions of reliability of computer network are covered by the new definition as its special cases. An efficient algorithm which can be used to calculate the reliability of multibus systems is given. Since an indicating vector is used, much comparison of homomorphic graphs is converted to the comparison of numbers. Thus the algorithm complexity is reduced.2|19|3更新时间：2025-12-08
- 摘要：Ref. CO makes a preliminary study of the optimization for vectorized object segments of loops with IF statements. Taking the previous result as a basis, this paaer deals with various optimum ways and algorithms in a deep and an all-round way.2|31|1更新时间：2025-12-08
- 摘要：<正> 成都电讯工程学院高能电子学研究所承担的电子工业部新技术开发项目“4毫米绕射辐射振荡器”于1988年1月12日通过部级鉴定。 奥罗管（Orotron）基于受激的Smith-Parcell效应,采用开放式谐振腔和反射绕射栅作为高频互作用系统。具有稀疏的频谱,高的频率稳定度,小的电子调谐斜率,宽带频率可调(机2|22|0更新时间：2025-12-08
- 摘要：A chaotic attractor of the double-scroll structure is observed from a third order autonomous electrical circuit which has only one nonlinear resistor. A one-dimentional map with an invariant set of the system has been presented by the Poincare method. The mechanism is shown for the system occuring chaotic behavior. The theoretical analysis is qualitati-vely consistent with experimental results.2|42|1更新时间：2025-12-08
- 摘要：A formula of quantum yield is derived for semitransparent photocathode in this paper. The quantum yield of the photocathode is represented by volume function and surface function. When photocathode Na2KSb is activated by Cs, it is not only to change efficient electron affinity but also change depth of escaping electrons.2|28|4更新时间：2025-12-08
- 摘要：Multistage realization is one of the most efficient methods to change the sampling rate of signal. The optimum multistage design scheme for circulator wave digital filters and the simple design methods for two-stage and three stage implementation are discussed. The coefficient optimization for the multistage sampling rate conversion is also presented.2|35|0更新时间：2025-12-08
- 摘要：In this paper an adaptive recursive filter with adjustable error smoothing coefficients is proposed. The upper and lower bounds of the rate of convergence, under some fu-fficient exciting conditions, for the parameters of the filter are derived. Simulation results are given finally.3|39|2更新时间：2025-12-08
- 摘要：In this paper a general recursive factorization algorithm （GRFA） for computing DFT（2m） on the basis of Kronecker product expression of factorization of the matrix is presented. Using distinct factorization radices, we have derived Kronecker product expression of some recursive factorization algorithms such as conventional FFT, Nakayama MD-FFT,Martens RCFA, Duhamel-Hollmann SR-FFT etc. As a result, the paper demonstrates that the minimum number of real multiplications required for DFT （2m） using GRFA is equal to （m-3）2m+4. SR-FFT or RCFA is the optimal recursive factorization algorithm with minimum number of real multiplications to compute DFT（2m）.2|76|11更新时间：2025-12-08
- 摘要：A new MOS current-mode multiple-valued（MV） logic circuit is proposed in this paper. By taking 10-valued circuits as an example, various 10-valued circuits, required by the complete multiple-valued system, are suggested. The possibility of applying these circuits to realize some practical systems is also studied. Testing of sample chips, fabricated by the standard CMOS technology, shows that this kind of multiple-valued logic circuits not noly has the complete logic functions, but also possesses the advantages of high integration density, simplicity of circuit structure, fesibility and’good reliability, as compared with other types of mu-liple-valued circuits.2|66|5更新时间：2025-12-08
- 摘要：Based on the surface carrier number fluctuation mechanism, the 1/f noise in MOSFETs is studied in theory and experiments. The surface 1/f noise theory of MOSFETs is extended to the whole range of bias: the channel homogeneous, linear, and saturation regions. The equivalent input noise voltage of MOSFETs as a function of frequency, bias, geometry etc. is measured. Experimental results agree well with theory prediction.2|104|0更新时间：2025-12-08
- 摘要：The purpose of this paper is to provide the simplified data structure of the elements by developping the concept of capacitor-switch macromodels and generalized nodes,and offered a computer method for calculating the time-and frequency-domain responses of switc-hed-capacitor networks, especially for the time-domain response with non-linear elements. The above-mentioned method is applicable to any switched-capacitor network with arbitrary switching phase or duty cycle. The computer progrem and two examples are presented in this paper.2|21|0更新时间：2025-12-08
- 摘要：The complex boundary element equation for the solution of the characteristic impedance of an arbitrarily shaped TEM transmission line is deduced in the paper, based on the Cauchy integral theorem for analytical complex variable functions. Using the CVBEM, a large amount of numerical quadrature in real variable boundary element formulations can be avoided, thereby the computaion time is reduced greatly and precision is improved. Finally, the formulae for the constant element method and linear element method are given and some calculating results relating to several typical transmission lines are presented.2|67|1更新时间：2025-12-08
- 摘要：The new fixed order overnormalized fast algorithms are presented for unwindo-wed （or covariance）, prewindowed and sliding windowed nonsymmetric recursive-least-squares criteria, respectively, to meet the requirements of actual application under different conditions. The amount of computation, required to iterate these algorithms, is proportional to the order number of the model.2|75|0更新时间：2025-12-08
- 摘要：The steepest descent algorithm which varies its step size constantly in seeking its minimum mean-square error is presented. Computer simulation results are presented to illustrate and verify that the VLMS algorithm is superior to the LMS algorithm for any statistic characteristics of noise and the complexity of computation of both algorithms is almost same.2|96|5更新时间：2025-12-08
- 摘要：In this paper, the methods of convolution and deconvolution by single parameter GFT are proposed, and some of the important properties of GFT（0, α） have been given. The fast convolution and deconvolution can be realized by using GFT（0, α）. A lot of operations can be saved by this method as compared with the time domain deconvolution method.2|160|12更新时间：2025-12-08
- 摘要：A new heuristic algorithm for BBD decomposition based on adjoint graph is proposed. In handling nodes with large number of degree, it is more suprior to the algorithm which is often referenced in recent papers. It can be used to decompose large networks and get better results. Finally, a computational example of a general purpose circuit analysis program based on this algorithm is given.2|22|0更新时间：2025-12-08
- 摘要：Based on development of the multitarget tracking as a multiple-hypothesis test, a mathematical model for tracking multiple radar-targets is proposed. Also a theoretical anayl-sis of optimal data association of common multitarget tracking systems is contained in. The target states are estimated by a Kalman filter. The computer simulating shows that the mathematical representation described in this paper is very suitable for optimizing the processing of multitarget tracking.4|118|2更新时间：2025-12-08
- 摘要：The coding problems of the multiple access channels are described in this paper. The history, new developments, open problems, and its role of the multiple access channel codes are included.2|51|1更新时间：2025-12-08
- 摘要：本文介绍了一种新型复合谐振腔回旋管,这种8mmGY-32二次谐波回旋管,脉冲功率达200kW,效率达30％,性能稳定,动态范围广、且有甚佳的经济效益。2|27|0更新时间：2025-12-08
- 摘要：A distributed data processing model for large manufacturing enterprises with many branches is presented. Supported by a distributed database system DdBASE-II, the distributed algorithm used in the mode can processes the data in parallel on several computers. The practice shows that it is an effective algorithm.2|32|0更新时间：2025-12-08
- 摘要：In thil paper we achieve a structure formula of linear mapping for bent sequences and prove its exactitude. A constructional method of bent sequences and design example are given.2|21|6更新时间：2025-12-08
- 摘要：By means of the birefringence effect of microwave ferrite materials dealt with perturbation mathod, a microwave ferrite dual-mode high power polarizer is developed. By loading the low dielectric constant ceramic, the ferrite material cam be saved, the characteristics and power capacity of the devices are also improved. In general the differential phase shift will be increased about 30-40 percent over the unloaded one.2|53|6更新时间：2025-12-08
- 摘要：A new method (or transforming an epitaxial silicon PNP transistor into a switching one by SMeV electron irradiation is introduced. The method has been successful in use and is able to take the place of the general process of golddoping. The properties of the defects produced by electron irradiation in the transistor are studied by means of DLTS. It is shown that these defects are of good thermostabi-lity, and the H （0.41） level is detected.3|38|3更新时间：2025-12-08
- 摘要：A new unlevel scheduling with a time saving is presented in this paper. The experiment re suits are satisfactory.2|9|0更新时间：2025-12-08
- Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19
京公网安备11010802024621 - It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
- Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
0