Abstract:Based on the fuzzy control technology,the feedback control method of synthesized yaw rate and side slip angle is presented for the ESP system.The influence of nonlinear characteristics of tires on cornering characteristics and driving stability of vehicle is considered.The nonlinear tire model(Magic Formula) is adopted,and the four-wheel vehicle model with two degrees of freedom and a vehicle reference model are set up on this basis.Then the fuzzy controller of yaw rate and the fuzzy controller of side slip angle are designed and a simulation model generated by Simulink software is used.Simulation results show that the lateral stability of vehicle can be enhanced by controlling yaw rate and side slip angle with the synthesized feedback control method.

Abstract:Aiming at shortening new product lead time,diagnosing the bottlenecks,improving equipment efficiency of multi-function track beam production line(MTBL) in iron&steel companies,the characteristics of MTBL,which is different from the traditional discrete or process manufacturing production,is analyzed.Based on characteristics research,the Petri network model of MTBL and the Component-based simulation models of rolling mills constructed,and then MTBL simulation system is developed.Tthe validity and practicability of simulation system are well verified by a case study in a iron&steel company.

Abstract:In order to develop forging process of thrust cone,its feasibility is analyzed.Two forging process schemes are proposed and simulated by using Metal plastic forming software DEFORM-3D.A forging process of accurate stock preparation,precise fix position and quick formation is made after optimized.The process is that saw cutting,upset and pre-forge on pneumatic hammer,finish-forge on friction press.Trial-manufacture indicates: forging process of thrust cone is feasible;wall thickness difference value of the forging piece is less than 1.5 mm;its plateness of friction surfaces is less than 0.7 mm;the further machining operation is not needed.

Abstract:To ensure the kilter to abstract and transfer information for Internet-driven collaborative design, a multi-granularity description and data structure of 3D geometrical model are presented. The multi-granularity description approach is composed of geometric knowledge of 3 D model, the form feature information relative manufacturing process and life-cycle of product. Traditionally, the roughness - granularity description was fastened excessively on the format of information presentation. On the other hand, the minuteness-granularity description emphasizes excessively the content of information presentation. This meant, that neither the pure roughness-granularity nor the pure minuteness-granularity presentation for 3D geometrical model, can meet all the requirements at certain phases during the life-cycle of the product. The multi-granularity description of 3D geometrical model, which integrated both of roughness-granularity and minuteness-granularity presentation, can reasonably, completely and fleetly, describe 3D geometrical model according to the design requirements of the collaborative designers.

Abstract:Complex wavelet transform can characterize the partial feature of the PD signal in time-domain and frequency-domain,and provides the unique phasic information.In this paper,the PD pulse waveforms which are created by 4 typical insulated defects are transformed by complex wavelet,and then the complex wavelet coefficient's real part,imaginary part and compound coefficient are clustered by the Fuzzy c-means,the energy of the cluster is the feature of pattern recognition.Discharge samples are got through large number of experiments,and BPNN can identify the PD created by 4 typical insulated defects effectively.The results show that the feature extracted from compound coefficient is better than the feature extracted form the real part and imaginary part of complex wavelet coefficient or wavelet coefficient.

Abstract:In order to solve the present problems and enhance the reliability of exitation exist in asynchronous starting of synchronous electrical machine, a method of sensorless best exciting in towards polarity by stator-electricity of synchronous motor is presented on the base of calculated best exciting time through simulation. Detect and analyze the wave of stator current to catch the best exitation time accurately to realize best exitation. The results of experiment demonstrated the advantages of high reliability, short time and low impact when pulling into step, much easier to pull into step in low voltage and heavy load condition. Which showed the feasibility of this method.

Abstract:The coal-bed gas was usually extracted from mine in order to avoid coal gas outburst.The Methane(CH4),a main component in coal-bed gas,is a kind of excellent gas fuel and raw material for chemical industry.China is very rich in the resource of coal bed gas,however,most of the coal bed gas extracted from mine is wasted because of the too low concentration of methane. Pressure sweep adsorption(PSA) technique is noticeable among the methods for the concentration of methane from coal-bed gas.However,there are a few studies about this field.Studies on the pressure sweep adsorption(PSA) process for the separation of CH4/N2 using actived carbon as adsorbent are summarized.The thermodynamic relationships and kinetic processes and the influence of the operate parameters on the concentration of methane are investigated.These results have a direct application in coal-bed gas.Some suggestions for the problems need to be solved in PSA process for the separation of methane are also proposed.

Abstract:Xiang-jiapo landslide,which consists of shallow layer,middle layer and deep layer,is a multi-landslide with several layers.Influenced by geological condition and rainfall,it have not obtained good effect even after three-time control.Because the distortion of landslide increase so fast, the government planed to control the landslide for the forth time.Based on monitoring data of the landslide movement,the paper make a constrast analysis of 3D numerical simulation's calculating between the formal control and the forth time control by a non-linear finite elements programm ABAQUS.Both results of numerical simulation and monitoring indicate that the forth time control have achieved good effect.

Abstract:室内温度是热环境状态参数中最主要的指标之一,它对人体与周围环境的热交换起着重要作用,对人体的生理与心理状况有很大的影响.通过动物实验,试图从血液流变特性的角度探讨空调室内温度对生物体(豚鼠)的生理影响,以及空调环境的健康性.实验结果表明,反映血液流变特性的主要指标血液黏度、血浆黏度和红细胞电泳时间与温度有很好的相关性,随着温度的升高有下降的趋势.通过回归分析,得到温度在23～24℃时,血液流变指标较佳.

Abstract:The improved Analytic Hierarchy Process is adopted for the optimal decision of waste water treatment process. The unified test of traditional method is avoided owing to using the three scale method and inducting the optimum transfer matrix and then converting into the unified judgement matrix. It is proven by example that it is feasible to use the improved Analytic Hierarchy Process in the optimal decision of the waste water treatment process.

Abstract:燃煤电厂烟气脱硫过程中亚硫酸钙的氧化是脱硫工艺中的重要化学过程,针对300MW发电机组石灰石湿法烟气脱硫工艺,采用按比例缩小方法,研究并设计了亚硫酸盐氧化动态模拟实验与分析装置.采用正交实验方法,研究亚硫酸盐氧化动力学过程, 实验结果表明:初始pH值为4.5左右,反应温度在40～50℃,空气流量0.15～0.2m3/h,转速200～300r/min,及存在Mn2 催化的情况下有利于亚硫酸钙的氧化.

Abstract:Jigong Mountain Tunnel is a controlled project in the reconstruction of Xinyang-Chenjiahe section.Based on hydrogeological investigation,tunnel's hydrogeology character such as geological structure,development of surface water and underground water,recharge of surface water and groundwater is evaluated,and normal and maximum water yield are predicted in the way of groundwater runoff modulus.It has been shown that normal and maximum water yield are equal to 860 m3/d and 1 283 m3/d,so the whole tunnel is a poor water section,while the speculated are ebbing water ones.

Abstract:In order to analyse seismic behaviors of inclined column-shaped and beam-shaped transfer floor,the pseudo static testing is carried out,which are subjected to vertical loads and horizontal cyclic loads,respectively on two specimens,including the framed short-leg shear wall inclined column-shaped transfer plane framework and the same dimension beam-shaped transfer frame.The load transfer is direct,inclined column transfer structure can reduce the beam dimension effectively,and it is easier to implement the aseismatic design principles,including "strong column and weak beam,strong shearing and weak bend,stronger nodes".Lateral rigidity of inclined column-shaped transfer stories is large,making it difficult to engender structure weakness stories.If the design is reasonable,inclined column-shaped transfer structure can get better seismic behavior.

Abstract:The simplified structural analysis and design method employing stiffness reduction of member bars,has been accepted by Chinese Standard, in which second-order effects already been considered through elastic finite element analysis,and its accuracy mostly depends on the rationality of the stiffness reduction factor.Due to the absence of investigation in the stiffness reduction factor of bent frame,according to the non-linear finite element analysis of several single-story single-span bent frames,the stiffness reduction factor of bent-columns has been suggested.And the rationality of this factor has been proved by comparison of the internal force in bent-columns and displacement of bent frames in second-order elasticity analysis and non-linear finite element analysis.

Abstract:首先实验测出了δ=2mm的Ti-2%Al-2.5%Zr单相α-Ti合金板材在350℃下的σb及σ0.2值.据此,确定了6个不同的试验应力点,用以进行该材料在350℃下的高温持久试验.对试验结果进行数据处理,得到了可以向低应力方向外推的方程.继而,对试样的持久断口进行了SEM分析,用金相和TEM对此种钛合金在试验前的显微组织和试验后试样的均匀塑性变形区与集中塑性变形区进行研究,得到了反映该种钛合金在350℃和高应力条件下的高温持久过程、组织变化特征和以位错滑移为主的蠕变行为.

Abstract:The microstructures and kinetics of reaction between aluminum and amorphous silica are investigated by making use of advantages of silica glass's larger dimension.Al/Al2O3 composite microstructures can be synthesized by longer time reaction and the diffusion transit layer is discovered between aluminum melts and the Al/Al2O3 composite layer.The growth kinetics of diffusion transit layer and Al/ Al2O3 composite layer are also measured and discussed.The effect of silicon element on the diffusion transit layer and the composite layer' kinetics is discussed and parabola growth kinetics of Al/Al2O3 composite layer is determined.

Abstract:In order to solve the shortcoming of generally used measure method for Micro displacement,which is expensive and unable to automotive longtime watch,a sort of MDMS is gwen based on the corner reflector and microwave phase measurement.In the situation in which the direction of the micro displacement parallels to that of electromagnetic wave radiation,the basic MDMS is recommended.Otherwise the bend MDMS is recommended.The principle of MDMS is described.The example of channel calculation and circuit for transmitting measure result are also provided.The communication circuit transmits measurement to termination demanded.Finally the experiment results are given.

Abstract:To associate the discrete wavelet transform with the continuous wavelet transform, an iterative convolution algorithm is given by analyzing the and scaling function using coefficients of wavelet filter. usually used methods of the computation The way of judging the convergence of improved algorithm on of the wavelet function iterative convolution is given. The advantages of improved algorithm is analyzed. The experimental result shows that the modified algorithm is effective.

Abstract:The inter-symbol interference in the nonlinear time-varying channel is a serious problem in the wireless communication. In order to overcome it, wavelet neural network equalizer using error feedback is employed to cut the auto-correlation of the error signal. Exploiting the decent time-frequency localization of the wavelet analysis, as well as the self-training feature of the neural network, a quicker convergent nalysis and computer simulation confirm the effectiveness of the equalizer and a lower BER are attained. Theoretical aalgorithm. It at The wavelet neural network equalizer based on error feedback advances the communication in the nonlinear time-varying channel.

Abstract:After analysis on the direction relationship betueen primary side and secondary side of existing contactless power transmission system, a random rotatable pick-up is proposed. Two connecting modes of three orthogonal wound coils are studied. Based on analysis and mathematical calculation, instantaneous output voltage and its ratio to the maximal and minimal value when the pick-up rotate in three-dimensional space is given. All the calculation is verified by experiment results.

Abstract:BP(Back Propagation) Neural networks is in the presence of the local optimization in the Neural networks training.The algorithm have slow convergence and the local convergence problem which impact the neural networks work performance.In order to cover these shortcomings and solves the size's hugeness and the low efficiency of the net problem in the traditional NN designing,the action principles of BP-Neural network's structure are analyzed,and a new method is formed which is confirmed from the Enhance genetic algorithms(EGA).The method can identify network configuration and network training methods.By adopting the number coding,self-adaptable multi-point variations operation,this method can effectively reduce the network size and the network convergence time,increase the network training speed.Tomatoes disease diagnosis examples illustrate the feasibility of this approach.

Abstract:Based on by typical coding schemes such as EZW,SPIHT, EBCOT,3D-IEZW,3D-SPIHT and 3D-ESCOT,a context model(3D-OWNER) of wavelet coefficients is proposed,which makes use of partial order,self-similarity between subbands of wavelet coefficients and the correlation of neighboring wavelet coefficients.Experimental results show that the model can achieve higher PSNR than 3D-ESCOT.

Abstract:Honeycomb meshes are topological structures for connecting processors within parallel computers. The unicast routing strategy on honeycomb meshes are studied. It is indicated that a previous known routing algorithm may suffer from deadlock. A deadlock-free routing algorithm known as the XYZ-ROUTE algorithm is presented by employing the classical virtual channel technique. This algorithm is improved to make it work properly in the presence of convex faults.

Abstract:SVG based on XML is a kind of language describing 2D vector graphics.It is usability and applicability to set up WebGIS.The paper puts forward a system structure of WebGIS based on SVG,which has been applied to campus electronic map system of Chongqing University.It has been proved the method is feasibility and practicability.The paper sets forth some key techniques of implement of the system in detail: coding method of organizing SVG spatial data;generation of SVG electronic map;storage of SVG spatial data and implement of client.

Abstract:采用核子N（反核子^-N）与中性介子π^2相互作用的Lorentz不变耦合模型，对N-^-N圈图传播子在动量重整化方案中的有限量函数∑c（p）的严格解析计算问题，从极点漂移小量ε作换序计算角度进行了深入的分析、探讨后，发现传播子四维动量平方P^2〉-（核子质量＋介子质量）^2时可作合理换序计算处理．若将此计算结果延拓到P^2≤-（核子质量＋介子质量）^2时，发现与正规计算方法获得的计算结果近似符合程度并非十分理想．

Abstract:Although there are modifying modules in the most CAD software, the parameters of entire curve must be computed again as the tiny local curve changed. The modification are not local and spending long time and difficult as the eurve is complex or large. A method can be applied to engineering designer easily has been proposed. There are only four segments have been ehanged along with the moving of a given point, and the speed is fast. It ean be used to CAD software and generalize the method to surface easily.

Abstract:According to an analysis of three-dimensional convection diffusion problems and object-oriented programming method,the classes of finite element models for convection diffusion problems are designed in C++.There are vector classes,matrix classes,element classes,material classes and method classes of finite element among these classes.On the basis of these classes,an object-oriented finite element program for three-dimensional convection diffusion problems is accomplished,which is able to simulate similar problems.The program's reuse,maintenance expansion and integration with other ones are easier than traditional ones which are designed with structural language,it can be applied to a large universal computational software for science and engineering.

Abstract:There is an important precise Yang Le inequality in the value distribution theory of meromorphic function. To get the value distribution of meromorphic function to the polynomial function, the constants of the counting function in the inequality is generalized to polynomial function based on the Nevanlinna theory and function theory analysis method, and get the corresponding deficiency sum upper bound. The results show the inequality of value distribution of meromorphic function to the polynomial function is also precise.

Abstract:The tunneling-current signals which acquired by STM,include both the sample's molecular structure and the dynamic characteristics of STM system.The Short Time Fourier Transform(STFT) is utilized to estimate the power spectral density(PSD)of the tunneling-current signals and the data's feature vector was extracted in the frequency space.The results obtained by PSD estimation reveal that spectral-space-based feature vector can distinguish the interference from power line(50 Hz),and it can explain and analyze the dynamic characteristics of STM efficiently by using a damped harmonic oscillator model.Meanwhile,the recognition is helpful in the control of the practice scanning condition of STM and the 3-D recreation for the images of STM.

Abstract:设R为区域D上的亚纯函数族,k为至少为2的正整数,a,b,c 为相互判别的有限复数.若对R满足,f(z)-c的零点至少为k,f的极点至少为2k 3,且(E)f(a)(∪)(E)f(k)(a),(E)f(b)(∪)(E)f(k)(b),则R在D上正规.

Abstract:Though Ginkgo biloba extract(GBE)and ginsennosides(GS)also have notability bioactivity on cardiovascular disease,there is little literature about applying the compound of them to treat cardiovascular disease.After endothelium cells suffering from oxidative injury were treated with serum containing GBE,GS and the compound of them(GG),respectively,production of NO,ET and MDA in them was observed by applying serum pharmacology.Both GBE and GS up-regulate NO level and down-regulate ET-1 and MDA level in endothelium cells suffering from oxidative injury.Anti-oxidation activity increased after GBE and GS were combined.But the NO up-regulation of GG was inferior to that of GBE and GS,which decreased by 29.9% and 66.7% when compared with that of GBE and GS,respectively.The ET-1 down-regulation of GG was superior to that of GBE, but decreased by 11.6% compared with that of GS.The compatibility of GBE and GS do not show synergic effect on NO and ET-1 regulation in endothelium cells and it is valuable to discuss that the compound of GBE and GS is used to treat cardiovascular diseases.

Abstract:为了探讨介入超声印压系统检测心肌被动力学属性可行性,为活体检测提供基础.采用循环印压犬离体心室肌,获得印压力和心肌形变实验数据.以准线性粘弹性理论(QLV)模型处理所获得的应力、形变数据,得出左心室心肌被动力学属性参数,活性组为A 1.02±0.45,B 16.54±5.21,C -169.42±51.23,D 1 876.52±428.67,E 4 307.37±1 100.81,无活性组为A 2.47±1.29,B 27.78±9.59,C -298.67±85.36,D 2 947.89±691.52,E 8 561.26±2 234.19,两者相应参数比较差异有统计学意义(p＜0.05).结果表明,采用介入超声印压系统检测心肌被动力学属性是可行的.可望在活体检测不同状态下舒张期心肌被动力学属性,从生物力学层面加深对舒张性心力衰竭的认识.

Abstract:Reload stock option is proposed as a executive stock option plan having some drawbacks, and prove that it is necessary to treat the reload option as a barrier option with two barriers. The improved reload option pricing model is established which the long incentive and reload feture of executive stock option are included. The pricing formula of the new option and the simulation analysis of it are discussed.

Abstract:The traditional description method of project risk is analyzed and the good and bad points of these methods are discussed. Multi-dimensional structure, a description method of project risk is put forward. A project risk is discribed five aspects of risk event such as occurrence probability, lost, predictability, manipulability, the degree of information asymmetries and so on. The function of the risk degree and measurement function of project risk are established. An application case study is provided. Multi-dimensional description and measurement of project risk which can reflect comprehensively the real appearance of project risk, and it is advantageous for us to know and gras Pthe rule of project risk.

Abstract:For incarnating the effects of the preference of the potential users of residential areas or decision makers on the evaluation of architecture design schemes,a two hierarchy multi-attribute group decision model is established.How to obtain the decision matrix of expert evaluation incarnates the influence of difference of professional knowledge among experts on decision.Multi-attribute decision making method based on uncertain linguistic assessment is used to determine the users' preference on schemes.The weight of attributes is determined by a optimization model that makes the difference of attribute assessment between expert and user minimum,and those weights are used in expert decision.This can enable the model to reflect correctly the actual situation of such decision making question.