A new fatigue damage evolution equation was proposed according to the fatigue accumulative damage theory,the effectiveness of which was verified by experimental results.

This article in detail introduced JSP's main characteristic of the dynamic Web page technology,based on the JSP development pattern and the Java database visit mechanism,proposed the solution which system realized namely the business management system is based on the B/S structure,using the JSP and JavaBean technology,utilizing Tomcat to take the Web service vessel,supporting mainstream relation databases(the Oracle,MySQL),developing to move to two kinds of software and hardware(Windows,the Linux) platforms.

A new fatigue damage evolution equation was proposed according to the fatigue accumulative damage theory,the effectiveness of which was verified by experimental results.

This article in detail introduced JSP's main characteristic of the dynamic Web page technology,based on the JSP development pattern and the Java database visit mechanism,proposed the solution which system realized namely the business management system is based on the B/S structure,using the JSP and JavaBean technology,utilizing Tomcat to take the Web service vessel,supporting mainstream relation databases(the Oracle,MySQL),developing to move to two kinds of software and hardware(Windows,the Linux) platforms.

The analysis of complex systems and agent modeling of agent-based complex systems simulation are proposed secondly. Detailed steps of agent-based complex systems distributed simulation are also present. Lastly,the modeling process of financial stock market simulation is demonstrated in the paper.

On the basis of analysis of advantages and disadvantages of IPSec VPN and SSL VPN,a design and implementation of the SSL VPN gateway system,which is based on the web browser,is proposed.

In this paper the usage control model is introduced and analyzed at first,then used to implements the DRM policy,and finally two application examples are proposed.

This paper analyzes the chaotic stream cipher proposed in “Chaos-based secure communication in a large community”, it finds that the frontal values of the encryption sequence of the stream cipher are not sensitive to the least significant bits of the key.

对Wang Shihong的“Chaos-based secure communication in a large community”一文提出的混沌序列密码算法进行了分析,发现该加密算法产生的加密乱数序列的前若干值对密钥低位比特的变化不敏感。

A new method for the numerical solution of volume integral equations is proposed

In this article we analyze an inversion formula for helical computer tomography proposed earlier by the author.

This leads to a very efficient geometric mesh compression algorithm as proposed in [23].

A new C*-algebra of strong limit power functions is proposed.

In this article we investigate the computational aspects of some recently proposed iterative methods for approximating the canonical tight and canonical dual window of a Gabor frame (g, a, b).

In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into...

In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the given final region of states. Some conclusions are obtained from the maximum principle by using transversal conditions of optimal trajectories in terminal points, and the particular properties of the stated problem are pointed out. The case of linear dif-ferential equations with integral quadratic functional criterion is investigated in detail.Further, in the second part the fundamental properties of isoloss regions, the rela-tions between the isoloss region and optimal control functions are indicated. As a direct result a partial differential equation determining the optimal loss-function J (x) is found and the connection between function J (x)and optimal vector control function u (x) is also stated. The methods proposed are practically the extension of the me-thods used by us for designing time optimal control systems as seen in [5, 6 ,7].Finally, an example is illustrated with optimal trajectories shown in phase plane.The necessary numerical data is calculated by an analog computer with high accuracy.

A new wavemeter with cathode-ray for decimeter and centimeter waves is proposed, utilizing special deflections of cathode ray in a rapidly alternating field. When the wavelength of the deflecting field is short enough, the deflections can be made to have maximum and zero sensitivities or phase-shifts by adjusting the anode voltage. Formulas for computing the wavelength are derived and fully discussed. All factors concerning this type of wavemeter are thoroughly investigated from the theoretical considerations...

A new wavemeter with cathode-ray for decimeter and centimeter waves is proposed, utilizing special deflections of cathode ray in a rapidly alternating field. When the wavelength of the deflecting field is short enough, the deflections can be made to have maximum and zero sensitivities or phase-shifts by adjusting the anode voltage. Formulas for computing the wavelength are derived and fully discussed. All factors concerning this type of wavemeter are thoroughly investigated from the theoretical considerations and preliminary tests.

Von Knorre first suggested the use of benzidine and o-tolidine for the determination of tungsten. With the latter reagent, he succeeded also in separat- ing tungstate from phosphate. Later on, o-dianisidine and vanillylidene benzidine have been proposed as precipitants for tungstate. The optimum pH ranges for the quantitative precipitation of tungstate by means of these precipitants and tetraminodiphenyl, which have not yet been found in the literature, are: benzidine pH: 2.0-5.5 o-tolidine 2.9-4.7 ...

Von Knorre first suggested the use of benzidine and o-tolidine for the determination of tungsten. With the latter reagent, he succeeded also in separat- ing tungstate from phosphate. Later on, o-dianisidine and vanillylidene benzidine have been proposed as precipitants for tungstate. The optimum pH ranges for the quantitative precipitation of tungstate by means of these precipitants and tetraminodiphenyl, which have not yet been found in the literature, are: benzidine pH: 2.0-5.5 o-tolidine 2.9-4.7 o-dianisidine 2.0-4.1 vanillylidene benzidine 1.7-3.9 tetraminodiphenyl 1.7-4.8 The effect of introducing various groups into the benzidine molecule upon the tungsten precipitating property is not profound. The relation between quantitative precipitation of tungstate with benzidine and the product of concentrations of both constituents before precipitation Was studied. It is found that quantitative precipitation of tungstate ions Can be realized only when the product of concentrations of reactants before precipitation is equal to or greater than 0.8 × 10~(-5), and the moles of benzidine added must be at least equal to that of tungstate. The gravimetlic determination of tungsten by means of o-tolidine may be applied to samples containing as low as 10 mg of rungsten trioxide in 200 ml solution, if an absolute error of 0. 5 mg can be tolelxted. For larger quantities of tungsten present in sample, the absolute errors amount to only 0.1-0.2 mg. Tetraminodiphenyl may be used as a tungsten precipitant, but no advantage over benzidine Wan found in our present studies.