Abstract:Human body experiment is one of the key problems for the electrical impedance tomogryphy(EIT) in clinical meaning.In this paper an orbicular passive 32 electrode system which is suited for the upper limbs is developed,and the mathematical model for EIT to solve inverse problem is given.After testing many upper arms or forearms of persons, the author have reconstructed the images which are distinct to distinguish skeleton from muscle.

Abstract:Based on the neural networks, object oriented technique, artificial intelligence technique and computer networks, an intelligent fault diagnosis system of the power plant whose need of the operation is presented. The architecture of software system , hardware system and corresponding databases is designed. The software of collecting data is established. The intelligent fault diagnosis system based on neural networks and object oriented technique is also developed. The physical system operation has been shown that the method mentioned above is feasible and effective in practice.

Abstract:利用微管吸吮技术，定量研究了肝癌细胞在ＩＶ型胶原／层粘素复合裱衬表面上的粘附特性，在此基础上，利用两种细胞骨架干扰剂进上步探讨了细胞骨架系统对肿瘤细胞粘附力的影响。结果：以正常肝细胞对照，用细胞松弛素Ｄ（０．２５～５ｕｇ／ｍＬ）处理后，两种细胞粘附力大大降低约７０％～９０～，而癌细胞降低幅度更大，用秋水仙素（１～６０ｕｇ／ｍＬ）处理后，癌细胞的粘附力降低或趋于降低，而正常肝细胞则升高１４０％～５０

Abstract:In this Study, according to theprinciple of similitude, the model of bile duct system (that is BSM)has been simulated by transparent rubber and has been verified. Aspecific oscillator DZ-5 for the biliary system produced the pressure elastic waveswith differentwave shapes, frequency and amplitudes. A microcomputersystem are used to study the principle of the pressure elastic waves propagating in BSM and the function of Oddis sphincter, and then the experiment of removing gallstones on the experimental installation of BSM is carried out. Amechanism for movinggallstonesthat based on the theoreticalanalysis is verified by this study, and then to be perfected. It is suggested to put the one-way valve in T-type tube for patients whose sphincters loseeffectiveness. The optimum parameters of pressure elastic waves and the effect of pulse frequency on the removing gallstones have to be furtherdiscussed.

Abstract:The study on overvoltage for 500 kV substation caused by lightning intruded wave is presented. In this paper, we calculate by using electromagnetic transient program (EMTP) and combine substation with incoming lines ,so some influence factors can be considered such as impulse voltage second characteristic of insulator strings, lightning stroke point on the incoming lines and impulse grounding resistance of towers. The results show that the method is close to the practice and some factors of incoming lines are important to overvoltage.

Abstract:采用金相显微镜 ,X -射线衍射技术和深冲试验等手段 ,研究了主要生产工艺因素对 310 4铝合金板材织构和制耳行为的影响。结果表明 ,采用适当高的温度大压下率热轧以及在中间退火前小压下率冷轧都可以增加其立方织构 { 10 0 }〈0 0 1〉组分 ,使成品板材中同时具有较强的立方织构 { 10 0 }〈0 0 1〉和变形织构 { 110 }〈112〉 ,深冲时出现 0°/ 90°和 4 5°方向共存的 8个小制耳 ,降低制耳率 ,减小各向异性。

Abstract:Contact temperature is one important working proprieties of friction pairs,there are no study on the contact temperature fields of rough surface contact at present.The methods of calculating the contact temperature fields are presented.On the basis of taking rough surface and debris effects into account,the temperature fields of sliding friction pairs are calculated.And the effect of temperature on the sliding friction pairs scuffing proprieties is discussed.The result shows that there are obvious enbance of the contact temperature comparing the smooth surface contact to the rough surface contact.If the coefficient of rough influence equal 0.1 and 0.5,the contact temperature will enhance by 14% and 103%.The contact temperature will enhance once again if the debris embed in the surface.If the material of the friction pairs is 45 # steel,Supposing the surface film has been destroyed,the temperature of debris embed point will come to the material welding temperature.

Abstract:Applying a photopolymer resin instead of thermopolymer resin as a bonding material,a rapid manufacturing of grinding wheel is realized on the basis of rapid prototyping.The new grinding wheel could be enhanced by compounded with silica powder.The research shows a thin dicing blade could be solidified within tens of second or a grinding wheel within several minutes.A series of grinding and dicing experiments on silicon indicate that the photopolymer resin grinding wheel has the same ability of working precision as the thermopolymer resin grinding wheel.

Abstract:This thesis completes 3D variational modeling design and Finite Element Simulation of a new style hydrodynamic bearing by I DEAS software,based on studying 3D solid modeling theory and Finite Element Simulation technology carefully and deeply.This thesis analyses the static and dynamic characteristics of bearing,computed the eight dynamic coefficients of oil,analyses the characteristics of this bearing after comparing with the other bearings

Abstract:将锚杆锚固范围岩体作为一个整体，即锚固体，运用相似材料模拟试验，结合理论分析，研究锚固体的变形特性和强度特性，从而分析锚杆的支护机理。结果表明：安设锚杆可以有效提高锚固岩体的峰值强度和残余强度，且锚杆对岩体残余强度的强化程度大子对峰值强度的强化程度。并且，随着锚杆盎密度的增加，锚固体峰值前的Ｅ、Ｃ、Х值与峰值后的Ｍ、Ｃ、Х值均有不同程度的提高。

Abstract:The deflective mechanism of the oscillating water jet is analyzed and the effects of jet deflection on the self oscillating water jet are investigated. It is experimentally shown that the deflective angle may reach 9.53 degree, the pressure fluctuation is more intensive and more regular and the jet can efficiently eliminate the water cushion effect and increase the ability in cutting.

Abstract:The dynamic model of describing influence of industrial structure and technology transfer on economy growth is given in this paper. The model reflects three important results as follows (i) If Small Open Economy (SOE) is multiple and the number of employers in service department is increasing,then GNP per capital will grow;(ii) The change of industrial structure in manufacturing department will lead higher GNP per capitcal;(iii) If foreign direct investment (FDI) is realized by multisnational company with accompanying transfer of its own technology and productive service,then economy growth of the state which is imported the technology will be slowed down.

Abstract:The effect of Joule heat and mineral matter on conductivity of coal has been studied. The results show that temperature of coal-body increases because of the effect of Joule heat, and it makes electric current passing coal-body increases. With the increase of time, the effect of Joule heat weakens owing to emission of the heat and conductivity of coal decreases. The conductivity of demineralized coal is larger 22 or 86 times than that of original coal. The conductivity of coal is increased when its stack density is increased or graininess is decreased.

Abstract:铁电材料具有独特的内部结构 ,在外加力、电场的作用下 ,由于电畴的反转而表现出非线性滞回特性。基于单晶的本构行为 ,发展了针对铁电陶瓷性能的计算方法 ,计及了四方结构铁电多晶材料中晶粒与基体间相互的能量作用 ,考虑了 90°及 180°反转的不同能量限值 ,计算结果表明该模型能较好地描述铁电材料的非线性行为。

Abstract:After coal mined, the balance of original stress state is to be broken. In the course of retribution, displacement and deformation in the overburden takes place with the working face advancing. The article points out that overburden can be divided into, in ascending, caving zone, fractured zone, bending zone and loose alluvium zone. The extracting space can be prevented from transferring to ground with injection material into bed-separation gap. Applying both mining subsidence theory and elastic thin plate theory, the computational model of subsidence control technology of grouting is worked out. The model can get rid of blindness of determining the position of separated strata, forecast the surface subsidence and provide the basis of theory for forecasting surface subsidence control technology of grouting.

Abstract:The microcosmical study on many speciments of sedimentary rock by SEM and petrography theory show that rock is formed of microcrystalline and micropore with all kinds of forms.Therefrom the microstructure model of rock is established.Further the three dimensional nonlinear damage constitutive equation and damage evolution equation of layered rock including respective process of damage evolution,mechanical parameter,effective stresses,and unequal biaxial stress in different rocks are derived.The results of the experiment indicate that the theoretical curve is fairly close to the experimental curve.

Abstract:An enterprise needs electronic commerce in Internet/Intranet environment whose security depends basically on User Identification. After studying on present identification methods and protocol, we present, in this paper, a mutual Strong User Identification system based on Kerberos protocol, public key cryptosystem, digital certificate and smart card. Several limitations of Kerberos protocal are overcome. This system satisfies the speed requirement of mutual real time identification. Moreover,it can simplify the actions of key management, distribution and storage, relieves the client's burden.

Abstract:The paper proposes a reliable multicast protocol which is appropriate for real-time and interactive collaborative environment. The control tree and grouping mechanism are introduced to make error recovery localized, which can efficiently decrease the amount of packet stream on the backbone of network and the workload of host. Analysis shows that the protocol has perfect throughput and can be extended to very wide applications.

Abstract:在研究前方障碍物识别及高速公路几何模型基础上,对其左右边缘线的几何约束关系进行了讨论,分析了常用的多目测距算法的不足,提出了一种实时、有效地利用计算机视觉原理实现单目测距的求解高速公路上障碍物距离测算方法.实验证明,系统的实时性好,精度高,达到了实用要求.

Abstract:介绍了含氮废水的亚硝化型硝化脱氮的理论和特点，并通过实验研究了ｐＨ值、温度、氨氮寝浓度、曝气量对亚硝化型硝化的影响。用单纯形方法优化出最佳条件为：水温３０℃、ｐＨ为８．１、初始氨氮浓度１４０ｍｇ／Ｌ、曝气率６８％的条件下，亚硝酸根转化率可达９６．２％，并且亚硝酸根不进上步转化为硝酸根，说明含氮废水实施亚硝化型硝化是可行的。

Abstract:The atom cluster model of coal surface is proposed.Quantum chemical ab initio calculation with base set STO 4 31G indicates that the interaction between CH 4 and coal surface is anisotropy and the maximum interaction potential (or adsorption potential) is 2.65 kJ/mol,rotation potential barrier is 1.34 kJ/mol.These results have shown that the adsorption of methane on coal surface should be a physical process (that is,freezing on surface).

Abstract:Under a weak force type condition,we study the existence of non collision periodic solutions with fixed energy for a singular Hamiltonian systems. Our methods depend on the Mountain Pass Lemma and the estimates of Morse index and the number of collisions.

Abstract:Keyboard input techniques are introduced into on line recognition of Chinese character with the study of chinese character five strokes encoding keyboard input method,and a new approach for on line recognition of unconstrained handwritten Chinese character,Five Strokes Encoding Recognition,is proposed.Besides,the set of character roots of Five Strokes have to be altered slightly to meet the on line recognition technique's features.

Abstract:提出了一种新型的气体水合物蓄冷技术，介绍了用水作为动力引射Ｒ１２液体，在混合室中由于降压Ｒ１２汽化并与水充分混合而形成絮状的Ｒ１２水合物晶体的过程。由于气体水合物的蓄冷密度与冰相当，蓄冷温度在８～１２℃的范围与目前广泛使用的水冷机组相匹配，所以是一种极有前任的蓄冷介质，还给出了引射式Ｒ１２气体水合物的蓄冷物 曲线并得了佳引射比为０．４３的结论。

Abstract:We point out the shortage of optimal portfolio model which was suggested by Markowitz in 1952, this theory has been less useful in practice because one must know indifference curves of investors. We propose safety first criteria and get optimal portfolio model under this criteria. Two methods are given to do with probability condition, and we obtain optimal portfolio. At last, we give safety first index to portfolio performance management.

Abstract:The economic difference in Chongqing municipality is very obvious.Chongqing must suit measures to local conditions to carry out this policy.The electricity pricing is the point of balance of the power market.The policy of same electricity pricing in same net interacts with the Chongqing power market.On the ground of Chongqing municipality power market,this paper classifies the cardinal index and sets up a grey index system including the gross domestic production,per capital gross domestic production,per capita income,power management system,population density,power consumption levle,social retail amount.Region division by means of grey cluster provides the base of decision making for the successful application of same electricity pricing in same net in Chongqing municipality.

Abstract:The risks of commercial banks have been emphasized more and more. We set up a practical and easily operative two stage Analytic Hierarchy Process (AHP) model to give quantitative analyses of commercial risks. From the point of view of both theory and practice, it is proved that this approach has feasibility and practical value.

Abstract:As one of the major solutions for IP traffic on the Internet backbone network, the new technology-IP directly transmission over SDH(IP over SDH) is obtained vast attention in recent years.In this paper,the principle and technological characteristics are introduced in detail.And the related fields,such as the relationship between IP over SDH and router the simplified data line(SDL) protocol and the aplication prospect are discussed.

Abstract:由竹叶制取叶绿素铜钠盐，采用先置铜后皂化的工艺可降低叶绿素在加工过程中的损失，节约有机溶剂，缩短反应时间，有利于叶绿素铜钠盐的精制。工艺条件是：在乙醇浓度为８０％、ｐＨ值的２～３、温度为５０℃、加入２０％ＲＣｕＳＯ４溶液搅拌置铜３０ｍｉｎ；用１０％ＮａＯＨ溶液调ｐＨ值为１１于回流状态下搅拌皂化１５ｍｉｎ，得叶绿素铜钠盐的粗品；再经一系列的净化处理，得到吸光值Ａ１ｃｍ＾１％４５０ｎｍ≥５６８，Ａ４０

Abstract:The paper analyses the factors affecting leachate generation for landfill,and discusses the methods of calculation for leachate generation and indicates the effective ways to control leachate pollution on environment.

Abstract:The slope stability is an important research content in rock mechanics. In recent years, the great achievement has been gained for the slope stability analysis methods. The deterministic analysis methods, including limit equilibrium theory, numerical analysis method, graphic method and compound method, have been developed. The stochastic analysis method and the fuzzy analysis method come forward. The recent progress of the slope stability analysis methods is analyzed in this paper. The trend of progress of the slope stability is studied.

Abstract:可穿戴式计算机（ＷｅａｒＣｏｍｐ）是一种新概念的个人移动计算系统，应用潜力巨大，发展头迅猛，它是随着计算机球断向超微型化发展应运而生的，也是“计算机应以人为本”这一理念 的必然产物，它为计算机科学与技术提出了新的课题和挑战，将使人－机关系发生重大变革。文中介绍了ＷｅａｒＣｏｍｐ及相关技术的基本概念，ＷｅａｒＣｏｍｐ的研究意义和应用价值，回顾了ＷｅａｒＣｏｍｐ的发展历程，探计了ＷｅａｒＣｏｍｐ硬件技

Abstract:The Fault tolerant in process control is approached. Firstly, the safety and economics requirement of chemical, power, iron and steel processes is studied. Then, the state of the art of present process control is investigated, and the fault tolerant process control is introduced. Based on the researches and applications which having been made, the future research and development for this area is proposed.

Abstract:To study the technique of surface reconstruction for Chinese medicinal materials from its cross-sectional images and to display its three dimensional structure.The pattern recognition technique is used to complete the classification and matching of various structures, then the triangle surface approximation is used to produce the 3D surface of the structure.The 3D structure is reconstructed and can be viewed by flexible way based on SGI workstation. The technique and method provided by this paper is contributive to the study and view of various structure of Chinese medicinal materials, and is available to biomedical image processing field.

Abstract:将旋转离心力的作用引入Ｋ－湍流双方程模型中，在平展流内的强旋有回流区采用轴对称的圆柱坐标，其他区域采用直角坐标的组合坐标系统，有效地解决了对平展流燃烧流场的数值模拟数值模拟结果得出，旋流数愈大愈有利于稳定平展流的形成，而消耗的动力愈大；喇叭口曲率半径的增大亦有利于稳定平展流的形成，但燃烧器烧嘴砖厚度亦增大，提出在设计平展流燃烧器时，旋流强度取１．２～２．０，扩散喷口曲率半径取（０．８～１．５）Ｄ。