Abstract:The Dobbins-BOD-DO water quality model was used to generate syn-thetic error-free water quality data and random errors were then introduced into them.Based on these data the random errors'effects on the optimized parameters in the waterquality model were

Abstract:In this paper , we present the technological proccess and the operatingcondition of a new method for extracting the plant growth hormone from the wasteresidre in the breed farm. In order to make sure of validity we tried out the product.The result shows t

Abstract:Improvement of ZnO powders for electronic materials with wet chemicalmethod NH_3 technique is studied in this paper. The main technical data such asroasting temperature and milling time are determined by X-ray Diffraction analysis andSEM analysis. The

Abstract:In this paper, we discuss a delay population growth model and obtainsufficient conditions under which the equilibrum point is a global attractor or uniformlystable.The results obtained have not only extended some previous ones due to Sugie,but also solved

Abstract:In this paper we present an approach to construct the weighted Liapunovfunctions in the study of stability for large scale linear systems. Using this approach,we obtain some new results of stability for large scale linear time varying systems andextend so

Abstract:本文得到了一类矩阵方程有实对称解的充要条件，并给出了条件满足时的通解的表达式。

Abstract:This paper presents the algebraic stability concept and corresponding cri-teria for multistage one-step second-derivative methods.

Abstract:In view of priority bilevel decision making problem with upper level ofmultiobjective and lower level of multi-person and multiobjective a mathematical modeland decision method is mechanism are determined in the paper. Then an interactive deci-sion metho

Abstract:In this paper the bond-parameter function, size factor ,and therefore theparabola method proposed by one of the authors(Zhang Bangwei) are used to predict thesolid solubilities for binary alloys based on Pm and Tm metals. It is believed that theprediction

Abstract:Based on Hill's theory of orthotropic anisotropic plasticity and the energy method in the theory of stability, a critical equation of elastoplastic buckling of ananisotropic sheet is established, which is useful in the analysis of wrinkling or bucklingcau

Abstract:将卡尔曼滤波与双显色体系相结合提出了一种新的分光光度法。选用５－Ｂｒ－ＰＡＤＮ／吐温－８０（ｐＨ１０．０）及５－Ｂｒ－ＰＡＤＡＰ／ＣＰＢ（ｐＨ８．０）两体系进行显色反应，实现了铜锌钴镍镉的同时测定，双显色体系结果优于单独使用。将本法用于合成试样及水，发，指甲等环境样品分析，效果良好，操作简便。

Abstract:This paper widly analyses the calculating methods for grinding temperature, By applying the finite element and the advantage of finite difference in time recurrence ,we study two-dimensional nonsteady grinding temperature field and propose a calculating e

Abstract:In this paper, a mathematical model for CMFD with unsymmetrical two-sided chip-split groove is established to resolve the problem of grinding the drill with numerically-controlled sharpening of tool edge machine.

Abstract:The authors analyzed the heat transfer oourse of water-cooled BF tuyerein the paper.The heat transfer density has been calculated for the superficial diffusion-multiple metallic elements BF tuyere. The calculation indicates that the heat transfer ca-pacit

Abstract:In this paper a ninth order polynomial is used to express the profile ofcams. The structural parameters of a cam mechanism and polynomial coefficients are determined by the Sequential Unconstrained Minimization Technique. The effect of systemelasticity on

Abstract:This paper descibes the concept of state space by disconnect for mea-sure. Based on the fact the state variable could measure easily in any sub-system of electrical power system ,the dynamical stabizing could be differentiated.

Abstract:A kind of real time microcomputer supervision and measurment systemhaving a network structure has been introduced in this paper. The characteristics of thesystem ,the series interface circuits and the useful anti-interference methods used in thesystem hav

Abstract:dvanced sensor technology is one of the main fundamentals of studyingand making intelligent robots. But nowadays the sensor is not able to fill the need of thedevelopment of intelligent robot technoloyg. According to this viewpoint,the paper analyzes and

Abstract:Based on the properties of Chinese charcters internal code ,this paper uses exclusive-OR hasing algorithms to create Chinese words database and search thewords. The improved algorithms for the different scale Chinese words database are presented.The pract

Abstract:The solution function for symmetric bending problem of cantilevered tri-angle plates is given by means of trigonometric series in this paper.When concentratedload applied , the series solution is gained by least square collocation method.Theresluts of thi

Abstract:This paper describes a new hydrometallurgical method for recovery oflead from waste battery sludge with K_2CO_3 as eliminating sulphur agent and the combi-nation reducing agent developed by us. Lead powder of 99. 99% pb was obtained by elec-trowinning wit