Abstract:Through the analysis of hydraulic-mechanical transmission and the modeling of torque converter, the traction performance of an automatic transmission car between hydraulic transmission and mechanical transmission under different throttle angle and different gears is discussed, and the control rule among dynamic gear-shifting, economic gear-shifting and mixed gear-shifting is made. Furthermore, the control strategy of engagement, disengagement and slip-control of lock-up clutch is set down. Simulation of integrated control of hydraulic-mechanical transmission which applies slip-control under multi-load-condition is carried out, and the result shows that the fuel economy of such type of the car gets an increase by 2.36%.

Abstract:The authors analyze major factor influencing the vehicle starting and shifting character of electronic-control AMT. By taking the mini-vehicle of Chan'an Star as carrier, electronic-control hydraulic AMT is developed, comprehensive shift-control strategy and clutch joint-control strategy are constitued, and related factors affecting clutch joint disciplinarian are complemented. The authors also put forward control aim of engine speed in the process of vehicle start and shifting, and automatic control to engine speed is realized by adopting electronic throttle. A last tests on prototype vehicle start &shift are made under different working conditions. The result shows newly-developed automatic transmission system is of more satisfactory control effect.

Abstract:Deformation design is main content of shoe last CAD system. This paper introduces adaptive tangency (AT) algorithm, which is used to calculate the sectional curve when a known plane section shoe last under a discrete model, and describes its application in shoe last deformation design. Shoe last data can be converted each other in shoe last deformation design, which ensures data format standardized in whole CAD procedure. The detailed algorithm in deformation design is fulfilled and an actual example is given, which shows AT algorithm's application is successful.

Abstract:The flowmeter based virtual instrument is a new test instrument, which has more advantages than the traditional flowmeter. This flowmeter is based on Qin's model. Apply to the flowrate measurement realm the virtual instrument technique. The design method has been introduced from hardware, software and panel, modelize the different flowrate measure way, with the virtual instrument's figural calculation and show to replace the traditional flowrate measurement, realize multi-threading long-distance flowrate measure easily.

Abstract:Two aspects of the study on the leakage of aluminium are introduced after the leakage mechanism of aluminium alloy casting is described. Three mathematical models, criteria function models, continuing equations-Darcy's law models, hydrogen diffusion-controlled pore growth models, are studied. Some measures of predicting leakage of casting in practice are summarized, such as the treatment of aluminium liquid and the adoption of new technics, Many different models of pore formation and growth have been proposed, however, each of these models has limitation and is not precision enough. Measures in practice have certain significance to the study of predicting leakage of casting, however, to obtain these measures cost a lot of time, manpower and material resource. In order to predict pore formation and growth of aluminium casting more precision, these mathematical models and practical measures should be integrated felicitously in different condition.

Abstract:This paper introduces an implementation method of Embedded Automatic Fingerprint Identification Systerm(AFIS), dealing mainly with hardware components and software modules based on ARM9. Hardware system consists of ARM9 series S3C2500, FPS200 sensor, memories, power supply ,communication interface, etc. System initiation, fingerprint sampling procedure and communication program are main modules making up of system software.The conflict of time-sequence between S3C2500 and sensor FPS200-one of the key links of the system, has been solved successfully. The system has integrated functionalities,such as fast sampling, communicating with upper and lower computers, establishing a complete and reliable platform for fingerprint image processing and identification.

Abstract:An automatic fingerprint identification module based on the fixed DSP chip TMS320VC5410 and the fingerprint sensor FPS200 is presented. The program of fingerprint identification algorithm mixes the assemble language and C, which implements a high effective and low cost embedded system. The software and hardware design and implementation of this system are introduced later. In experiments, the module is fast speed and accurate, and takes a very good performance.

Abstract:Owing to the defects of fingerprint sampling facilities, it is often difficult to collect the distinct and intact images under the conditions that the finger is too dry , too wet , dirty or frayed. The authors provide a method of Gabor filtering to enhance the images which follows the orientation of fingerprint, and provide an effective method to identify and remove the invalid areas.

Abstract:A pipelined FFT processor designed for fast and real-time requirements with FPGA is introduced. This FFT processor can be used to real-time frequency analysis and its working frequency can reach to 75 MHz. The leakage error is reduced through multiply the sampled signal by a weighting window. In order to improve FFT's working frequency and economize FPGA resources, an algorithm of 1024-point complex to compute 2048-point real data is adopted. In addition, an approximate algorithm to compute module value of complex number is introduced.

Abstract:Considering the speciality of PCB programming object, this article presents a method of abstracting drill information and characteristic automatically with computing vision system, discusses the feature abstracting and analysis process, and designs the binary image based filter and barycenter based position recorgnition method. The format of output data is given.The system running effect shows that it is better in resolution, higher in control accuracy, lower in hardware requirement, faster than by hand in programming efficiency. Automation programming is twenty times as fast as by hand.

Abstract:The load changed of motor affects normal run. If it is not adjusted, the state of motor will become poor, while it affects steady of the system. This paper presents an efficient method for the motor speed controlling, it applies Tacagi-Sugeno's method that each linear submodels are connected for fuzzy algorithm, an algorithm of the fuzzy model identifying and fuzzy control is fulfilled through whole nonlinear model which are replaced with local linear models. It makes speed of motor to maintain steady, and variable structure control is applied to guarantee performance of dynamic flowing for process controlled, the design of stability and robustness is proposed in the scheme. Practice running results show that it is efficient that uncertain dynamic processes are controlled.

Abstract:After analyzing target recognition and tracking technique, a method of developing specifically target tacking system is proposed, which uses digital image manipulation to target recognition. Software and hardware design of intelligent vehicle are presented in detail. The system uses digital image manipulation technology to cognize the certain target through a pickup camera installed on the front of the intelligent vehicle. When the target is moving, singlechip receives the commands from the computer and then control the vehicle to trace target. The system can run by itself, regardless of artificial control. This design provides a platform for the research of Growing Machine Intelligence system.

Abstract:Satellite communication channel has the characteristic of power limited, band abundance, and powerful error correcting ability FEC scheme is needed. For its near Shannon limit error correcting capability, Turbo codes may be suitable for satellite communication systems. The multiple Turbo codes can utilize channel capacity sufficiency and overcome the disadvantages of power limited for satellite communication systems. Force on the needed for satellite communication systems, multiple Turbo codes is adopted and server decoding schemes were proposed with simulation. Simulation results show that, the schemes proposed can get near channel capacity error correcting performance with short code block.

Abstract:According to the reality of the development of fire alarm system in our country, this paper offers a fire alarm information system based on Internet. Being different with the way of normal router in transmitting all data packages fairly, a new dispatch algorithm is put forward, which can identify different data packages of demanding different real-time performance and transmit the data packages of demanding high real-time performance by jumping queue intelligently. That decreases warning time delay and improves the dependability of important data transmitted by router. A new kind of method is proposed to satisfy a high real-time system at a low cost.

Abstract:RS-232 serial communication has to be adopted in the communication between computers and some equipments without TCP/IP enclosed. First, the main properties and events of MSCOMM32.ocx component are discussed in this paper. And then we expatiate on the method of using the MSCOMM32.ocx component to obtain serial communication under Delphi environment via a real application example of Telecommunication industry. In the mean time the designing framework implementing the serial communication is presented. At last we discuss the problems that should be considered in the communication control program.

Abstract:According to Electrodynamics in curved spacetime, the interaction between gravitational waves (GW) and electromagnetic (EM) fields will produce perturbative electromagnetic fields. In a special EM system, namely, a Gaussian beam (Gb) propagating through a static magnetic field, the photon flux along the direction of the electric field of the Gb will be only a pure perturbative photon flux,when a GW propagates along the symmetric axis of a Gaussian beam. Detailed alanysis and calculation of the photon flux along several typical surfaces are performed, and a possible optimum plane which can receive perturbative photons up to 10~4s~(-1) is proposed. It is possible to provide an important method to detection of GW.

Abstract:According to the extensive theory of topological degree for set-valued mapping ,the authors derive the topological degree for upper semicontinuous set-valued 1-set-contractive mapping. With the topological degree, the fixed theorems for upper semicontinuous set-valued 1-set-contractive mapping is studied.

Abstract:A numerical simulation commercial software has been developed by the object-oriented Visual Basic programming language on the basis of the 2D mathematical model of secondary cooling Process in billet continuous casting. Thereby an effective experimenting tool for computer simulation of continuous casting process is gained. By simulation with the software, the caster structures and operating parameters in continuous casting can be designed and optimized. The simulating calculation examples on several casters and its production applications indicate that the commercial software developed has more accuracy, practicability and commonality, as also as simpler operating capability. The simulated results have been successfully applied to the design and production of the high-efficiency modification for several billet casters interiorly.

Abstract:The diagnosis of the power electronic circuit is very intricate. One of the main reasons is that the structure of the circuit will change if the power device is not working .The thyristor is the easiest to be mangled. So diagnosing the malfunction is the most important about the diagnosis of the power electronic circuit. The paper puts forward a malfunction diagnosis of the thyristors of three-phase full-bridge controlled rectifier with BP neural network. After analyzing the output waveforms of malfunctioning circuit and training a BP neural network with the sampling data of malfunctioning waveforms, a well training BP neural network is constructed and used to diagnose the malfunction. The simulation and experiment demonstrate that this method is valid.

Abstract:In order to develop a 3D visualization system for medical CT images which comply with DICOM standard, the authors study DICOM file format and methods of analyzing it, discuss the key technology of adjusting Windows Center/Windows Level of Medical CT images and 3D visualization methods, and describe the system's structure and approaches to implement every function module. Through developing 3D reconstruction software of medical CT images, surface rendering is compared with volume rendering.We succeed in implementing the visualization system for medical CT images which comply with DICOM standard. This system provides an intuitionistic way for diagnosing with medical images. The system is significant in clinical environment.

Abstract:ZK60 magnesium alloy is one of high-strength wrought magnesium alloys. Owing to its high strength and low density, it has nearly the highest strength to density ratio among existing materials. Because its strength approximates to high-strength aluminum alloy 7075, it has promising application future. The history of magnesium alloy ZK60 and researches on its microstructure, mechanical properties, surface treatment, and the effects of alloy elements and microelements are reviewed . Further more, the authors put forward methods to improve its microstructure and mechanical properties and prospected the development future of this alloy in the aspects of surface treatment and application.

Abstract:采用2 kW CO2激光器对20Cr2M4W钢进行了激光表面钴合金化的实验研究.利用扫描电镜、电子探针、X射线衍射、透射电镜、显微硬度计等手段分析了合金化区域的成分、组织和性能.结果表明:当激光功率为1.4 kW,扫描速度为100～250 mm/min时,激光表面钴合金化可获得含钴均匀的合金化层,合金化层热疲劳性能比基体材料提高1倍以上,生成的氧化膜不易脱落;合金化层的室温硬度提高HV50以上;在700℃时,Co含量为8.08%合金化层的高温硬度提高HV36.因此,激光表面钴合金化在热作工具钢的表面性能优化领域有着可喜的应用前景.

Abstract:Targeted drug delivery systems (TDDSs) can selectively react with the targeted tissue at cell and subcell level,and can also selectively reach the diseased site and release the drugs slowly,which maintain the drug concentration above an efficaciously critical value for a longer duration of time. For TDDSs of anticancer drugs, such kind of preparations can efficiently minimize the side effects to the undesired tissues or organs, consequently augmenting curative effects of chemotherapy. We summarize the present situation and recent progresses in the prospective field of TDDSs for anticancer drugs. The models of drug targeting, the categories of drug targeting, the targeted drug carriers, and the factors that influence the effect of targeting are introuduced through domestic literatures.Although it is not very near future for clinical application of TDDSs,TDDSs play an important role in overcoming the side effects of cancer therapy and improve curative effect.

Abstract:The analysis of the surface myoelectric signal is a valuable and the signal is recorded while a muscle is performing a sustained contraction tool for assessing the progression of localized fatigue. Mean and median frequencies of an electromyogram power spectrum are often used as indicators of muscular fatigue during static contraction. To evaluate muscle fatigue during cyclic dynamic contraction, according to the features of surface myoelectric signal during dynamic contraction, an instantaneous frequency detection technique based on cross Wigner-Ville distribution is proposed. The estimation error of the algorithm by means of a simulated stochastic process with statistical properties similar to the those of surface myoelectric signal. The theoretical and experiment validates that the instantaneous frequency suites well to tracking spectral changes due to muscle fatigue with very low SNR.

Abstract:Polysilicate aluminum ferric sulfate(PSAFS) is presented as one kind of new polymerized inorganic coagulants. The advantage of aluminum and ferric homopolymer are still contained while the disadvantage is thrown away such as high Al residuals of polyaluminum chloride(PAC) in treated water and the poor stability of polyferric chloride(PFC).Because of those,considerable interest and attention have been paid to PSAFS home and abroad in recent years. PSAFS is prepared from aluminum sulfate and ferric sulfate and water glasses. The influence of different factors(the stability of ploy-silicic acid,Al/Fe/Si molar ratio,etc.) in flocculation is studied and the optimal compounding condition is obtained finally.

Abstract:In wastewater biological treatment for nitrogen removal, N_2O and NO_x are common gaseous intermediates. Traditional nitrification and denitrification are considered to be the main soueces for them. But with the development of relevant study , more new metablic pathways for nitrogen are found and the production of N_2O and/or NO_x in these processes are experimentally confirmed, which makes the mechanisms for N_2O and NO_x production more complex. Though inhibitory of enzymes and chemical reaction are the probable mechanisms, there are still others unknown. Discussing the sources and mechanisms of N_2O and NO_x in wastewater treatment from the point of contributing microorganisms and biochemistry reaction will benefits the understanding of new nitrogen metabolic pathways, the development of new technology and the protection of air pollution from NO_x.

Abstract:The new material of graphite foam is a good thermal-conductivity material. With fractal theory, the fractal character of this novel porous material is discussed. Then a thermal-conductivity model of graphite foam is proposed. The relationship formula of effective thermal conductivity is presented by using thermal resistance method. The volume fractal dimension and effective thermal conductivity of this material are calculated. This new method for calculation is significant for porous material.

Abstract:Along with the generalization of DSM and time-sharing price system, the use of electric boiler with heat reservoir becomes more and more extensive. Load forecasting of heat supply system is an important base in the study of economical operation of electric boiler with heat reservoir under time-sharing price. The BP ANN modeling of the load forecasting for a 1200 kW electric boiler is discussed. The result of hourly heat load forecasting accords well with the real heat load.

Abstract:基于在不同射流角(10°,27.5°,45°,90°)和动量比下(0.1 MPa,0.46 MPa)对音速次膨胀射流通过菱形口喷射到马赫5横穿主流的实验及圆形射流器的对比实验,研究了次膨胀射流与超音横穿主流相互作用流场.结果表明在低射流角和动压比下相互作用激波保持附着,脱体激波产生lambda激波,lambda激波出现于高射流角、动压比下和圆形喷射器情况.射流外边界高度在射流进入主流过程中不断增加,而且在大射流角下较大.由于侧向扩展,羽流变窄,但圆形喷射器无此变化,接近喷射口的紊流卷吸结构大小随入射角增大,穿透量随喷射角和动压比的增加而增大,在近场圆形喷射器的穿透量超过菱形喷射器,但菱形喷射器的下游穿透量会超过圆形喷射器.

Abstract:By studying the influence of the debonding fibers in composites under cyclical thermo mechanical load the distributions of fibers and matrixes stress are given around the debonding fiber. For illustrating the Boron/Al, continuous fiber composite is examined. Matrix around the debonding fiber only sustains shear stress. The constitution relationship of matrix is perfect elastical-plastical. The important conclusion is made, which lays a foundation for continuing studying the fatigue of composites.

Abstract:The disruption, yield and water content change of a remolded unsaturated loess is studied during the course of shear tests with controlled net mean stress equaling constant. Two types of density's triaxial drained shear tests with controlled net mean stress and suction equaling constants are conducted. The test results show that the disruption stress increases with suction. A new method to identify the field stress under triaxial drained shear tests with controlled net mean stress equaling constants is suggested, and the shape of loading-collapse yield curve are similar in q-s plane and in p-s plane. The soil-water characteristic curve is dependent on deviatoric stress, and the soil-water characteristic curve including water content, suction, net mean stress and deviatoric stress is proposed.

Abstract:以三峡库区某含软弱夹层顺层岸坡为例,通过三维有限元数值模拟,研究未蓄水和蓄水至175 m高程时,软弱夹层对岸坡岩体应力、位移的影响以及软弱夹层的位移特征.数值模拟结果表明:1)库区蓄水至175m时,该岸坡岩体水平方向位移增大0.097～0.005 m,竖向位移增大0.055～0.025 m;2)由外向里,岸坡4层软弱夹层的水平方向最大位移分别增大0.099 m、0.097 m、0.092 m和0.075 m,竖向最大位移分别增大0.080 m、0.079 m、0.071 m和0.057 m;3)第四层软弱夹层以外的岸坡岩体变形较协调,这一软弱夹层是岸坡潜在的最危险的破坏面;4)岸坡沿不同软弱夹层破坏时的最危险剪出高程分别在145.0 m、125.0 m、101.5 m和101.5 m附近.

Abstract:The ultimate bearing capacity of foundation based on Mohr-Coulomb strength criterion did not analyze effect of intermediate principal stress on yield and failure of soil so that the disparity between results obtained using Mohr-Coulomb strength criterion and those from experimental data are produced .In the paper , The ultimate bearing capacity of foundation based on unified strength theory is established and a unified solutions are obtained. The corresponding solutions of different materials can be got from it .The unified solution can not only be used to fit the properties of the materials with different tension-pressure strength but also those with equal tension-pressure strength, Results show that ones make full use of the properties of the materials so as to reduce supports,which is of important significance for engineering.

Abstract:Test investigations show that the reinforcement scheme with adding diagonal and rhombic bars to traditional reinforcement in the foundation is an ideal way, for the seismic performance of small span-to depth ratio coupling beams with this scheme is better than that of traditional reinforcement. Because the regions in the small aspect ratio coupling beam belong to D-regions, in which the Bernoulli hypothesis of plane strain distribution is invalid, the traditional bending theory can not be used. This paper simulates the coupling beam through non-linear finite element analysis program, and contrasts the analysis result of the bar's stress distribution with test result. The contrast results confirm that it is a valid way to analyse the bar's stress distribution in this coupling beam through non-linear finite element analysis program.

Abstract:The firm's debt maturity structure is the important part of capital structure. Based on the analysis of credit behavior between bank and enterprise, we study the determination of firm's debt maturity structure. It is shown that when there is the cost resulting from credit rationing, the maturity of the debt can be viewed as a signal about the firm's quality sent to the bank. The high quality firm with stable cash profit tends to the high ratio of short-term debt, and signaling quality of firm to bank.

Abstract:Now the appraisement of stock market of China is still in the exploring phases. When stocks are appraised, people usually use expert-method or history-method aiming at different factors, especially the confirming of the factors that affect the stock evaluation and the interaction between different factors are not analyzed quantitatively, resulting in the stagnation of next researches on the whole.By applying the SEM to stock evaluation of Chinese stock market, we build a financial structural model, analyzes the influence to stock evaluation of each factor and build the experience mode value of stock evaluation of China. This can be consulted by stock evaluation and credit evaluation of China.

Abstract:Under the condition of market economy, the price of goods changes with internal rule and relation of supply and demand in the micro-market. Because of complexity of real economic system, the fact that supply is not all equal to demand every time needs use the disequilibirium analysis which nears well reality instead of traditional equilibirium analysis. In the state of disequilibirium market, according to the adjustment function for market and under synthesizing two basic adjustment equations of price, the stability of price for disequilibrium system has been studied based on the equations of supply and demand and using the adaptive expectation mode to forecast price .These conditions of stability of the system have also been given, which benefit to study structure and capability so as to search for dynamic law for the economic system .

Abstract:Achievement audit is an important part of management audit , but until now there is no available way to judge achievement .Most of internal audit judge by financial index .But because of the limitation of financial analyze , financial index analyze technique has much limitation itself . In this article , we introduce a new way--BSC to judge achievement , and also use it to achievement audit.

Abstract:The paper makes a study of the application of grey linear programming in deciding the capital structure. First, the normal grey linear programming is introduced. Second, some factors are introduced which affect the capital structure. Then the authors introduce how to establish the models of grey linear programming of capital structure and how to use it.

Abstract:The development of the economic and the social development of the Three-gorge Region is mostly depends on how to manage the towns of this region. It is very important to choose the appropriate mode of management for each town. After the analysis of all the Modes, we give some advises for using each mode to achieve the developing goal.