Abstract:The method using the airlift assisted with the self oscillation pulsed jet for dredging in the Three Gorges Reservoir Region has been presented. The physical and mathematical model of airlift has been given. The feasibility of the self oscillation pulsed jet as breaker of the airlift is researched. It is theoretically and experimentally shown that the self oscillation pulsed jet not only crushes and looses mud deposit under water, but also lifts particles of solid on the clay and sand or mud bed. The oscillation cross flow caused by the self excited oscillation jet makes particles of solid enter the end of the suction pipe easily.

Abstract:A lot of information needs processing in time in dynamic balance testing, but the current intelligent dynamic balance instruments and the controlling box of dynamic balance machines made up ofsinglemicrocontroller do not meet the request.A method isgioen that the DSP-Microcontroller will be useddiredtlyinthe system of the intelligent dynamic balance instrumentby using embedded design technique. A principal and subordinate control system compose of DSP and microcontroller. The Microcontroller the system as a principal controller and the DSP implements digital filtering and FFT in dynamic balanc by means of its fast operation. The system develoyed according tothe method can do more analysisin time areaand frequency area.

Abstract:While lots of enterprises use the single point buying model to make profits, few of them noticethe fact that the business complexitieswill finally shift to each pole of the supply chain, therefore, greatly increaseother enterprises'workloads, especially for suppliers. This shows the necessityof supply chain's complexity analysis under the single point buying circumstances. On the basis of the previous research, the frameworkof complexityanalysis for enterprises is built.It is pointed out that the five stages for the complexity analysis of the supply chain are advanced, and an exampleis given to show how the complexitiescaused by single point buying shift betweenbuyers and suppliers. On the basis of data analysis, a general mathematics model which could define the complexity relationships among the entitieson the supply chain is given and the model can help enterprises to Through comparingeach participants on supply chain, their relationship canbe clarified, and the effectof the improvement of the supply chain relationship can be predicted Through systematically comparing process, product line and production, enterprises' inner productiontransformcanbe guided.

Abstract:The efficiency of the steel pushing V belt continuously variable transmission is an important factor for weighing CVT performance.Based on the mechanical analysis,by synthetically considering the effect of the viscosity lubricant on the power loss of CVT, the calculation formulae of efficiency have been found. The calculation simulationof efficiency is done, qetting two efficiency trend charts. One is efficiency with torque and rotational speed variation .The other is efficienccy with torque and ratio variation. The two charts have a guiding function in formulating matching and a control strategy and in an efficiency experiment.

Abstract:In existing equipment vehicle transmission test bed can be controlled only by 8031 SCM and data can not be transmitted from SCM to PC. In order to take most advantage of available equipment, data transfer between PC and Multi SCM is put forward. By this way, torque of eddycurrent dynamometer can be controlled by PC programs and satisfy the needs of torque convert experiment. Making use of Dynamic Link Library 8250 registers can be read and written directly. Programs can set the ninth bit easily without Microsoft Communication Control. Data are transmitted between PC and Multi SCM though RS232 COM successfully by using Visual Basic programs. Cost and time are sharply reduced.

Abstract:Congestion control is an import issue in the broadband network, which aims at improving network utilization and fairness. Rate based closed loop feedback congestion control schemes and their various implementations in broadband networks are discussed. The high burstiness and strong correlations inherent in the network traffic are pointed out to be the key to the design of algorithm on congestion control, so is the delay time of the network. In addition, the goal for maximizing network utility often confilicts with the goal of fairness. All these show it is difficult to get a optimal scheme. Therefore, we denote that both the accurate description of the characteristics of the network traffic and the scubsequent design of the congestion control algorithm rely on necessary mathematical tools.

Abstract:The RAID technology is relatively mature now and applied widely in serverand even micro computer, but due to lack of experience in its application,even professional engineers feel at loss about the problems lisuchas, disk array information recovery when RAID corrupt, original data retaining when RAID corrupt for commixing disk's levels, when and how to resume lower version of BIOS of the disk array, why system down at time of mirror operation and how to solve it. The writer summaries solutions for 4 typical cases based on his experience in relevant work, to provide reference for readers that have similar problems, in the hope of helping them recovery the disk array fast.

Abstract:Kuhn Tucker optimality conditions and Lagrange multipliers for vector optimization problems with subconvexlike set valued maps wereestablished by Li zemin. Firstly, the concept of generalized subconvexlikeness for set valued maps is introduced in this paper. Then, a theorem of the alternative for generalized subconvexlike set valued maps in real linear spaces is established. Finally, the optimality conditions for vector optimization problems with set valued maps with equality and inequality constraints are obtained with it.

Abstract:The purpose of a power system is to deliver the power the customers require in real time, on demand, within acceptable voltage and frequency limit, and in a reliable and economic manner. Using NLPNN (New Linear Programming Neural Network) model, the behavior analysis of power system under fault conditions is carried through. The stability and convergence theorems are set up to obtain the resolution for the problem of the load curtailment strategy. A new way is open up to evaluate the reliability of power systems and the great progress in calculation analysis model is achieved. The new calculation technique and theory foundation of reliability evaluation are supplied.

Abstract:多孔硅是一种由纳米硅原子簇为骨架构成的海绵状结构，具有比表面积高、生物相容性好等特征，能够应用于光电子器件、化学传感、生物医学等领域。笔者以金属硅粉作为研究对象，采用化学浸蚀工艺制备多孔硅粉，利用比表面积测定仪、扫描电子显微镜、扫描隧道显微镜等研究了不同浸蚀温度制备的多孔硅粉比表面积、孔径分布、表面形貌及微结构的变化。结果表明：化学浸蚀方法能够在金属硅粉表面形成含较多纳米尺寸孔洞的多孔硅粉；随着化学浸蚀温度升高，所形成的多孔硅粉比表面积明显增大。

Abstract:As a new technology towards 21st century, the occurs of the virtual reality technology is a result of computer graphic, human machine interface technology, sensor technology and artificial intelligence. The real time self photographing technology based on the virtual environment is a typical application of this virtual reality technique. A series of things has been discussed and studied ,such as visual reality,video intercept and so on,and the real time self photographing system based on the technology of blue background image extracting. A new arithmetic is emphasized which is produced during study and exploitation.It is image fusion technique based on the contrast appreciate characteristic.

Abstract:Tracking and Data Relay Satellite System studying and constructing is an important sustaining system in China. The signal designing of TDRSSis systematically introduced in this paper. According to various services, KSA, SSA, MA, UQPSK are selected in the up link, data spreaded spectrum is transferred in I section and ranging code is transferredin Q section. According to the different data groups and modes, spreading spectrum or not is selected and QPSK is used. The signal equations and system designing notes are presentedin detail.

Abstract:Over the last few years, ant algorithm has come out and gradually got much attention.This algorithm, which is stochastic and all purpose, simulates the characteristics of action ants searching for food in nature. When working, a mobile robotis required to walk along an optimized (or approximately optimized) route according to a certain rule.By maklink graph, the moving space of Robot is described.Using Ford algorithm,a preliminary route is gained.Then, exerting Ant algorithm, we optimize the preliminaryroute and acquiresatisfactory effect.

Abstract:随机过程的具体刻划在金融上有重要应用。混合泊松随机测度正是其一个精确刻划，记录值可形成泊松随机测度，而记录时间可用泊松随机过程很好地逼近。前人给出了泊松随机测度的经典结果。在此基础上运用测度论典型手法及拉普拉斯泛函，得到混合泊松随机测度的结论。不仅给出了混合泊松随机测度的定义：N是E上的点过程，如果在给定A＝λ条件下，N是具有均值测度的泊松随机测度，则称N为混合松随机测度，而且得到混合泊松随机测度的构造与存在唯一性定理。这将给实际应用提供一个有用的理论工具。

Abstract:It is a significative attempt in medical diagnosis that Electrical Impedance Tomography is used to hematoma monitoring. Since there is great difference in physiological parameters among different persons, among varieties of ill cases, and different tissues, it is important to loosen the limits of initial values of reconstruction algorithm. A new approach named Continuation method is proposed in Electrical Impedance Tomography. In addition, simulating calculation results are given to validate the approach effective.

Abstract:介绍了Ti-Al-Zr钛合金的冶金历史及其管材的加工工艺流程和化学成分后，用金相法分析了该种钛合金管材中存在的夹杂物种类及金相组织，得出夹杂物为微量、细小且分布随机的氮化物、氧化物和偶尔出现的聚合体小渣团；该种钛合金管材的金相组织为α－Ti等轴晶，但材料批次不同，其实际晶粒度有差异。用Instron对管材进行室温拉伸并对其断口进行了SEM分析后得出：此种钛合金管材具有良好的塑性。随后，对分析结果进行了讨论，从而指出了该种钛合金管材中的夹杂物源于冶金；进一步改善此种钛合金管材性能的途径在于优化其锻造和拉拔工艺；该种钛合金材料的塑性好的原因是由于其密排六方（hcp）晶体结构的轴比c/α＜1.63而可以产生多面滑移所致。

Abstract:It is possible to get high compression rate for the interrelationship between neighboring frames of moving pictures. The kernel of research on video compression is that the efficient image compression algorithm is adopted while the interrelationship between neighboring frames and time consumption is concerned to improve the compression efficiency. It is significant that motion compensation is applied to video compression, nevertheless it is too time consuming. A vector coding method based on wavelet transform is presented to avoid searching procedure of motion compensation. Simulation shows that high compression rate is achieved with less time consumption.

Abstract:采用四点弯曲加载装置对大鼠颅盖骨中分离出的成骨细胞施加周期性拉伸刺激，研究成骨细胞对不同应变水平的拉伸刺激的生理响应。结果表明，500微应变的周期性拉伸刺激促进了成骨细胞的增殖，细胞的^3H－脯氨酸掺入量增加，碱性磷酸酶（ALP）活性和向胞外分泌钙均升高；而1000微应变的周期性拉伸抑制了成骨细胞的增殖、^3H－脯氨酸掺入量、碱性磷酸酶活力和向胞外分泌钙都降低，说明成骨细胞能够分辨不同变水平的力学刺激，500微应变的周期性拉伸刺激有利于细胞的生长和分化，而1000微应变的周期性拉伸对细胞的生理活性有抑制作用。而且细胞在增殖、基质合成和分化、矿化上表现出一致的变化趋势。

Abstract:In practical application, plane measuring instrument is mainly used to test flatness of workpiece in micro level, so that people can check if the workpiece is qualified or not. High resolution and high stabilization are two key technologies. The method of resolution extension is presented for improving the resolution of workpiece,and a signal source with high stabilization, which is designed by microcontroller and Complex Programmable Logic Device(CPLD), improves the stabilization of the system. The paper propose work principle and test step, the design of hardware,and introduces the measure for improving precision. The system is consisted of a position transducer, a signal source with high stabilization, a microcontroller and a signal processing unit. It has many advantages such as high resolution, high stabilization, low cost and simple operation, It also has been formally put to use in Chongqing Actaris Measurement Instrument Co.Ltd. now.

Abstract:This paper presents structure, characteristic and condition of microprocessor based relay communication system. A available start network configuration for the system is put forward. Message manager is used in the net. Some problems appearing in serial communication of field unit are also discussed. A way is brought forward for the communication system, which is an application of PTS function of 80C196KC SCM. The order is proposed for the PTS's one transmission model, which is the data longness must be destined in the net message agreement. A data redundance technic is adopted for improved message dependability.

Abstract:The air pressure of the high altitude condition in the artificial climate chamber is simulated, and the laboratory investigation of positive rod plate lightning impulse discharge performance were carried out on the short air gaps of 200 mm, 300 mm and 450 mm according to the test method demanded in IEC 60.1. Based the tested results, it is put forward that the positive lightning impulse breakdown voltage of a short air gap at the air pressure of the high altitude district is a power function of the air pressure with a special index less than 1, which indicates that the effect of the air pressure on the breakdown voltage decreases by 8.7% with the increase of the altitude by 1 kilometer. According to the theoretical analysis, it is proposed that the air pressure suggests the comprehensive changes of the basic atmospheric parameters of the temperature, the reltive air density and the absolute humidity, thus it could be used as the characteristic variable which expresses the effect of the absolute humidity, thus it could be used as the characteristic variable which expresses the effect of the atmospheric condition on the breakdown voltage of an air gap.

Abstract:Nonlinear thermophysics parameters are considered in ansys finite element software, so it can be used to compute temperature in the quenching. The temperature field in quenching process of 45 steel part is simulated by ansys finite element software, and the relationship between temperature of part and quenching time is obtained. Simulation result is correspondent with real process, this method has quick computing speed, and it can optimize quenching technology and select quenching bath. The most of all,this method can supply the temperature condition in computation of thermal stress and residual stress of quenching process.

Abstract:One of the apparent characteristic of advanced PWR is the high reliability of passive safety system .It is important to assess the operation behavior of such system and the ability of system analysis code as RELAP5.One principal test facility, passive emergency core cooling system experiments is carried out. The RELAP5/Mod3.2 is used to simulated the experiments in this paper. The simulation capability of RELAP5/Mod3.2 in passive emergency core cooling system is assessed through the comparison between the experimental results and calculation results.

Abstract:According to the space vector modulation method of the AC DC AC converter,the switch control scheme of the matrix AC AC converter is deduced,and the model of a three phase matrix AC AC converter is constructed. According to the mathematic model of the doubly fed generator and the excitation control principle based on dynamical synchronous reference frame,the simulation model of the generator and excitation controller are established,then the modeling and simulation of the doubly fed generator system with the matrix AC AC converter as an exciter are implemented.The steady state and transient characteristics of the system are simulated,the harmonics of the EMF and stator?rotor current are researched.

Abstract:By article \ the paper puts forward a concept of orthogonal double complex variables space. Its conformal transform and its typical form of transform are doscissed, such as three dimensional complex space square transform, space rukovski transform.

Abstract:Risky debt valuation differs greatly from that of no risk so that under uncertainty of income flower and discount rate, usually we can not get a kind of resonlution to express the type. With no account of the discount rate, we are absorbed in property value influence under uncertainty. As generalizing the theory of option pricing, contingent claims analysis can handel debt valuation, and sometime give closed form expressions.Two formula obtained by Merton and Black&Cox, are Compared and different conditions are discussed. At last, some comment on formula of debt valuation is given.

Abstract:In practice, it is a huge project to exploit DSS and very difficult to control expense of exploiting DSS, raise efficiency, and to ensure software'squality and reliability. Then a perfect methodsbaseis required. Recycling methods base can solve questions above. This kind of recycle contains two respects: recycle of programcodes and recycle methodsin building model.Based the logic structure of arithmeticand using the technology of OOM/OOP, the recycle of programcodes of methods is established. The structure of methods class library's arrangement and their relation map are gotten, at the same time relation data model manage methods are used in order to recycle methods in models base.

Abstract:Analyses impact of China electric market changes on electric rate is analysed.Itispoinfed out that with the change of the conditions of China electric market,the electric rate should not be priced only with the considering of the supply side's cost,and that it will be more important to consider the possible reaction of the demand side's demand to the change of electric rate. the indexes of the influences of electric rate change on local economy are put forw ard, such as rate of electric cost to product value, price rising rate. The demonstrate impact of electric rate's possible change on local economy is calculated with the data of Chongqing City, 2000.

Abstract:Agglomeration Effects and its evolution lead to the formation and further evolution to multi centers of a city's original center.During the further evolution to multi centers, there exists a rule which is proved to be true by the example of the formation and evolution of The dynamic adjustment of functions between business and trade within centersdrive the formation of a modern city's central business district(CBD).This rule discloses the following facts in planning and policy making of CBD:we must obey the natural rules of city centers' evolution,including the rules of Agglomeration Effects;we must lead CBD to mainly agglomerate business,not agglomerate everything;we can choose the original city center or other place out of the original city center as a CBD's location.

Abstract:In the system of infrared imaging acquisition, it is necessary to improve data transfer to satisfy the characteristics of high speed and real time. So,this paper introduces PCI bus and PCI inerface to imaging acquisition. The protocol of data transfer of PCI local bus and the structure of PCI9050 are studied in detail, and the IRFPA data acquisition system are described based on the protocol of data transfer of PCI local bus. The system adopts frame buffer to make slow transmission between peripheral circuit and PCI bus.CPLD is also used as a master of logic time control?

Abstract:Pursuing the green manufacturing of products is beneficial to the alleviation of environment burdens. In order to reap such benefits, green manufacturing is involved in every aspect of manufacturing processes.The optimization selection of tool is one of the important approach to improve environmentally performance of cutting machining. The objective factors of decision making problems for traditional tool selection are usually the following, quality and cost.Based on the main idea of environmentally conscious and decision making framework model of green manufacturing proposed by the authors, an multi object decision making model for tool selection is put forward. The objects includes Time(T),Quality (Q),Cost(C), Resources(R) and Environment impact(E), where T aims to minimize the produce time,Q means to maximize the quality,C means to minimize the cost, R means to minimize the consume the resources and E means to minimize the environment impact respectively. Each object is analyzed in detail and integrated the Fuzzy Clustering Analysis Algorithm together with the expert judging method apply to the model too. A case study in which a practical decision making problem for tool selection in green manufacturing machining is analyzed. Successful application of above model shows the model is practical .

Abstract:Firstly, the uncertain factors in drawing process, which cause the changes of the sensor's displacement and the sensor's vibration, are analyzed in terms of mechanics and statistics. Systemic randomictiy and non linearity affect the performance of traditional auto regulation equipment. Using the minimum error variance adaptive controlling technique to solve the uncertainty of controlled system is the ideal method. Secondly, using generalized least square method to achieve the principle and method of the system identifying model is described. Thirdly, the design steps of the minimum error variance adaptive adjustor and the method of the computer simulation are discussed. The result of test running shows that the output of the system follows the input of the system better, the system restrains the random disturbance more efficiently, and the performance of auto regulation is improved apparently.

Abstract:通过消声器的插入损失实验，分析了微型车消声器消声后的声音频谱特征，识别出未被消声器抑制的有害噪声源。建立了该消声器的有限元模型，利用ANSYS分析软件，对消声器的声结构进行了声场分析，获得了该消声器的消声频谱特征。基于实验和数值分析结果，并根据抗性消声理论改进了该消声器的结构参数及布置形式，设计出一种新型抗性消声器。对新设计的消声器的消声性能进行台架实验验证。结果表明，设计的消声器消声量提高3－5dB。

Abstract:Aiming at solving the matter of fact of manufacture errors on worm, the worm test apparatus is studied by the tool research department in Chengdu.A kind of improved principle,hardware and software design of the project is discussed. The primary aim of the single chip microcomputer circuit of this project is data collecting, and the invention monopoly of professor Zhangguanghui of Chongqing university is applied. The high frequency inserted pulse is used, and the software is joined in constitute subsidiary calibration distributed on equal time. The task of online subdivision in the dynamic measure process is completed. The data are passed to PC, PC handle them and examination result is gotten. The integration of the process is very high, and the tedious and complicated hardware circuit is simplified like the tradition examination method.

Abstract:Based on characteristics of hysteretic energy of structures which are simplified single freedom degree systems and under the short duration impulse modle mid duration and long duration modle earthquakes, correlation between the maximum hysteretic energy increment per cycle and the maximum inelastic displacement of different structures is investigated. Simplified equations to estimate the maximum inelastic displacement are obtained. The validity of the equation is recognized. It is pointed out that the impact destroy of the structures may occur when energy increment per cycleis 50 80 percent of total hysteretic energy, and the maximum hysteretic energy increment per cycle, and that the maximum inelastic displacement can be used to evaluate aseismic capacity.If energy increment per cycleis small relative to total hysteretic energy, the destroy of the structures by cumulate dissipation energy may occur, and the total hysteretic energy can be used to evaluate aseismic capacity.

Abstract:灰砂混凝土通常采用蒸压湿热养护工艺，若能将其改变为常压干热养护工艺，将节省建厂投资，降低生产能耗。基于这种目的，采用恒温电热箱进行了灰砂混凝土常压干热养护工艺试验研究。研究结果表明：采用合适的外加剂MH，常压干热养护工艺也适用于灰砂混凝土。并考察了升温速率、恒温温度、恒温时间等工艺参数对灰砂混凝土强度的影响，得出最佳养护制度为：升温速率1／2℃/min，恒温温度200℃，恒温时间4h。初步能耗分析表明，当抗压强度相同时，与蒸压湿热养护相比，采用干热养护可降低能耗40％以上。

Abstract:In order to extend life of salt well, avoid sinking and use the formed cavity reasonably, the factors of effecton cavity stability must be researched during the process of water mining of rock salt, so that the effective prevention measures can be put. The stability of dissolving cavity for the low depth thin layer rock salt has been researched by the ADINA non linear finite element method.The results show that the stability of dissolving cavity obviously becomes strengthened with the decrease of its height, and has a decreasing trendas with the span increase of the cavity . The effect of incidence on stability of the cavity is very little. The stability of cylindroid cavity is higher than that of converse taper cavity. The assorted model is a kind of transition shape. The influencing order of cavity stability is the ffollows, height>geometrical shape>span>incidence.

Abstract:The 99% of all microorganisms in naturecannot be isolated by standard culture methods without conspicuous external characters to classify them morphologically. In addition, classification based on physiological or biochemical features are often fuzzy. Molecular techniques are used for uncultured microorganisms to explore the diversity of microbial communities and novel resources without the need of cultivation. DNA dynamics and cloning of PCR products obtained from environmental DNA is now routinely used to identify microbial populations in microbial ecology. For practical reasons the approach is not suited to study the complex dynamics of microbial communities in environment. Genetic fingerprinting techniques are better tools, which give complement for the traditional microbiological methods. The methods are rapid and relatively easy to perform, and they allow the simultaneous analysis of multiple samples, which makes it possible to compare the genetic diversity of microbial communities from different habitats, or to study the behaviour of individual communities over time.

Abstract:The allocation MSW disposal measure, which would occupy large quantity of land, cannot meet the need of the development of the urban area and economics and the great yielding of MSW. The author gets the conclusion that the nost suitable disposal measure for MSW is incineration. The allocation and the life cycle evaluation are both focused on.The principles and influencing factors of the allocation in relation to these systems are discussed in detail. A conclusion is that the factors of economic and envronment policy are more important than technique.