最新刊期
卷 ， 期 4 ， 1991
- 摘要：Based on the Bayes decision theory, the performance of a tree classfier with overlap has been studied in this paper. A new term called quality factor Q is defined which is used to evaluate the overall performance of the tree classifier. The analytic formula of Q in terms of the number of the pattern classes N, the number of tree levels M and the error rate has been derived. Theoretical results show that there exist certain optimum conditions in which the quality factor Q is maximum.2|72|2更新时间：2025-12-08
- 摘要：The field distribution of the waveguide discontinuity region has been represented by the nodal voltage in network model, and the field external to the region has been replaced by equivalent current sources connected to the boundary nodes. The [S] parameters of an E-plane or H-plane discontinuity can be determined by using the diakoptic node analysis in electric circuit theory. Numerical results are also presented as a demonstration of the validity and effectiveness of the method. In present analysis, the power conservatiom condition is satisfied to an accuracy of ±10-5.2|56|0更新时间：2025-12-08
- 摘要：In this paper, a fault diagnosis algorithm in Switched Capacitor Networks （SCNs）-fault dictionary algorithm is presented based on the principle of charge conservation. The algorithm divides all single faults, including soft faults and hard faults, into several fault sets. Differing from the traditional fault dictionary algorithm of analog circuits, this algorithm can diagnose soft faults. It requires less computation and may be easily extended to multiphase SCNs.2|43|2更新时间：2025-12-08
- 摘要：The frequency of a resonance signal can be measured by finite length digital convolution method. In this paper, a convolution frequency discrimination algorithm which can measure the center frequency of a linear frequency modulation signal and its linear frequency modulation coefficient is derived. The influence of signal’s parameters on frequency-discrimination characteristics is analyzed and discussed, and the precision of the convolution frequency discrimination algorithm is given.2|57|0更新时间：2025-12-08
- 摘要：This paper proposes a new analog-digital-analog speech scrambling scheme, which uses frequency-domain amplitude-phase separate permutation and amplitude modification algorithm. It is shown by analysis and simulation that the scheme has greater security over L. S. Lee’s system and can work under asynchronous condition without non-linear phase distortion.2|36|1更新时间：2025-12-08
- 摘要：The correlation measure of combining function without memory is developed. A methed of calculation is given. The relation between correlation measure and correlation immunity is described. Its boundary and the optimal attack functions are derived. Finally, a cryptanalytic example by using high order correlation measure is presented.2|28|1更新时间：2025-12-08
- 摘要：A new algorithm for image displacement estimation has been described in this paper. The algorithm, utilizing sign algorithm, can obtain the displacement estimation between two frames of image directly. Having been theoretically analysed, a relationship among the variance of displacement estimation and some parameters such as SNR, correlation of image and window size is developed and a limit-cycle-free condition is given. The theory analyses and simulation results indicate that this estimation algorithm has advantages of strong capability of anti-interference and small burden of computation. Consequently, it may be applied in image tracking and coding.2|26|0更新时间：2025-12-08
- 摘要：In this paper, a new points matching method for 3-D object recognition and location is presented. The global consistent match can be obtained by means of this method with simple calculating of distance and quaternary determinant, so model test is not necessary.2|126|1更新时间：2025-12-08
- 摘要：In this paper, the electromagnetic transient scattering by multi-radial lines joined to a coaxial waveguide is studied, and the theoretical formulae are derived. For different parameters of the system structure, the transient reflection responses for a double exponential pulse excitation are analyzed and evaluated. In addition, the application of numerical results to the parametric inverse problem is studied.2|35|0更新时间：2025-12-08
- 摘要：The efficient numerical solution in the region of low frequency and resonance is presented for electromagnetic scattering on rectangular conductors and dielectric-coated plates. The electric- and magnetic-field integral equation is solved by using the method of moments （MM）. Entire domain representations are based on duality principle and boundary conditions. Several numerical results are given.5|51|0更新时间：2025-12-08
- 摘要：A new approach to analysis of multi-port waveguide junctions, based on the numerical solution of iris electric field integral equations, is presented and discussed. While the waveguide junctions are the basic components of microwave circuits, many popularly used waveguide junctions have not yet been precisely analyzed. As an effective method for accurately calculating network parameters of waveguide junctions, it is specially useful in designing novel waveguide junction devices with complex structure.2|61|1更新时间：2025-12-08
- 摘要：The global spacing for BBL （Buildinq Block Layout） can improve the final chip layout quality. However, the global spacinq in 2-dimensions is a very complex and difficult problem. In this paper, an "annealinq" global spacinq algorithm is designed and speeded up by using several techniques so that the operatinq complexity is acceptable. The authors not only propose an idea about "channel density function of offset" to describe the dynamic channel wirinq density accurately when modules are moving, but also discuss how to keep the constraint graph constant by use of density function. Furthermore, the authors put forward "well-distributing the spare space" as an optimal aim for the global spacing so that overflows in detailed routinq caused by lack of channel capacity are eliminated and the optimizinq process is more effective. The experimental results show that the algorithm is practical and effective.2|24|0更新时间：2025-12-08
- 摘要：This paper presents a complicated problem decomposition-based approach called SWT, to the Boolean function minimization. SWT, comprises three major stages: First, a conceptual clustering system LEOBS partitions the given Boolean function into a number of subexpressions; then, the learning from examples based Boolean function minimization are system SWT minimizes each of the subexpressions; finally, the simplified subexpressions composed and the obtained function is further simplified globally. Some running results show that the proposed method is applicable to the large scale problems with more than 20 input variables.2|40|2更新时间：2025-12-08
- 摘要：Two new switching fabrics with simple structure and high throughput are introduced in this paper. The maximum throughputs of the switching fabrics with different sizes are calculated and simulated.2|78|1更新时间：2025-12-08
- 摘要：In this paper, we consider the circle numbers and the distribution properties of the linear recurring sequences over residue class ring Z/（m）.4|18|0更新时间：2025-12-08
- 摘要：In this paper, the convergence factor μ in LMS adaptive algorithm is analysed mathematically in detail and a better method of selecting μ is developed. The result of computer simulation shows that the modified LMS algorithm is superior to some other popular algorithms.2|94|1更新时间：2025-12-08
- 摘要：In this paper, a digital signature scheme constructed with error-correcting codes is first presented.2|53|2更新时间：2025-12-08
- 摘要：In this paper the relation between phase and zeros in frequency domain is given, special attention is paid to the influence of simple real zeros on the uniqueness of reconstruction. A sufficient and necessary condition for unique reconstruction is proved. Furthermore, conditions for unique reconstruction of a finite-length signal using only finite number phase samples are consideid.2|95|2更新时间：2025-12-08
- 摘要：This paper introduces a split structure for m-sequence generation of the characteristic polynomials in the form （1+xq+xp）. This structure can be used to increase the rate by q times only by adding a few gate circuits and does not need to change or add the memory elements.2|37|0更新时间：2025-12-08
- 摘要：In this Paper, Thermally reactive CoSi2 films with smooth interface and low resistivity by FA and RTA were introduced. The XRD, AES, TEM （cross-section）, SEM and Four-point probe tecniques were used to analyze the reactions between Co and Si as well as Co and SiO2, electroconduc-tivity of CoSi2 films, interface morphologies of CoSi2/Si and CoSi2/SiO2 structures. The results show that CoSi2 can be applied to self-aligned technology like TiSi2.2|34|0更新时间：2025-12-08
- 摘要：A fast algorithm of L2 （least squares） deconvolution is proposed. A lot of operations can be saved by this method as compared with the present time domain method.2|103|4更新时间：2025-12-08
- 摘要：In this paper, a new algorithm for identification of noise FM jamming band width based on video waveform of radar is proposed and has been experimented. The results indicate that the identification system has higher identification rate.2|54|3更新时间：2025-12-08
- 摘要：In this paper a direct and accurate calculation of aberration integrals containing up to fourth order derivatives has first been performed. Its feature is that the calculation does not need to reduce the orders of derivatives but still keeps accuracy high enough. In comparison of the computational results of two-tube electrostatic lenses with those in Reference [6] the average relative error is about 0.6%. The author believes that this method will facilitate the design of electron and ion optical systems.2|30|1更新时间：2025-12-08
- 摘要：A new type of vocoder system basd upon formant analysis is presented in this paper. The LMS adaptive algorithm is used for tracking formants of speech signals. The result of computer simulation shows that the new vocoder has rather good synthetic speech quality.2|36|0更新时间：2025-12-08
- 摘要：Using the approach of twice impedance inversion, a floating capacitance multiplier was built by operational transconductance amplifier （OTA）. The effective capacitance value of the multiplier can be continuously controlled by electric signals. The linear control range of the capacitance value wide, and the multiplication factor is highly stable The experimental capacitance values are basically in agreement with theoretical values.2|34|0更新时间：2025-12-08
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