bluuebunny/crossref_metadata_2025 huggingface dataset:
The Numerical Analysis of Thermally-Induced Damage of Concrete Bridge in Fire
Authors: Chen Wei Qi , Ding Yong , Zhang Jian Ke , Yao Zhi Kun , Zhou Li Ping
Published: July 2011

High temperature in fire have serious influences on the structural behavior of reinforced concrete structure, and causes damage in structure, even leads to overall collapse. By thermal and structural analysis using finite element method, the whole-course behavior of a reinforced concrete bridge in fire is simulated, and the transient temperature field, deformation and stress is discussed. These information supply the basis for fire resistance of concrete bridge design.
Facing the Development of SMEs Based on Human Resources Management
Authors: Miao Bin
Published: July 2011

SMEs are important part of the national economy. The level of human resources management in an enterprise ultimately determines the competitiveness of enterprises and effective development and scientific and rational management of human resources is the key to the business success. Therefore, how to strengthen and improve the enterprise human resources management are the urgent issues in the development process of current enterprises. The article analyzes the prominent problems in SMEs’ human resources management from human resource perspective, taking Zhengzhou Wuhua Lamp Company for example. It puts forward how to strengthen and perfect the SMEs’ human resources management and gives some countermeasures and suggestions, also highlights the importance of "people-oriented" concept of modern human resources management and provides valuable suggestions for SMEs’ health development.
Research on Lab Informatization Management of Local Colleges and Universities
Authors: Ou Min Juan
Published: July 2011

It is an inevitable trend of the development of lab management of local colleges and universities to innovate the management means or methods. By analyzing the existing problems of lab informatization management of local colleges and universities, this paper explores some ideas for realizing lab informatization management.
Design and Achievement of Work Measurement System Based on VBA
Authors: Liang Di , Zhang Feng Rong
Published: July 2011

To improve the efficiency and accuracy of work measurement of IE, system using VBA language as well as Windows API function is developed on Excel platform. It can record data, eliminate abnormal value, determine measurement times, and calculate measurement periods automatically. And like record, calculation and analysis, these primitive handworks are replaced by work measurement system now. To compare data between measurements on spot and handworks, work measurement problem is solved efficiently and accurately at last.
Identification of Noise Sources on a Diesel Engine Using Sound Intensity Measurements
Authors: Zhang Bao Cheng , Zhao Peng Fei , Li Bao Ji
Published: July 2011

According to the analysis of acoustic signals and vibration signals measurement, an investigation of the noise source identification in a diesel is presented, and the noise level of the diesel is comprehended. With the sound Intensity method, the major sources of the exterior radiation noise of the engine are surveyed. The research provides the reliable basis for the engineering practice to reduce the vehicle noise level.
Study on the Design of Southern Anhui Tourism Commodities from the Perspective of Semitics
Authors: Song Wei Wei , Huang Kai
Published: July 2011

Southern Anhui contains many Huizhou cultural elements. The designer is difficult to capture the required core elements because Huizhou cultural elements are many and complex. In the paper, Huizhou cultural elements are studied from the perspective of semitics, at the same time, Huizhou cultural elements are classified according to the element symbols. This will make for the designers to select directively the design elements. This saves time and can quickly get to the point for the designers.
Trial Development of a Virtual Mine
Authors: You An Bi , Yu Bin
Published: July 2011

To deepen the student’s comprehension and visual impression of mining knowledge while avoiding the risk and cost of visiting real mines, a virtual mine teaching platform was developed with 3DS as modelling tool and virtools as programming tool. Having this teaching platform, students can visually obverse the 3D layout of mines and mining procedures, roam about the mine, and even manipulate the mining device interactively, get judgment of his actions. This teaching platform greatly enhance the efficiency, safety and quality of mining speciality education, it also has good prospect to mine staff training and mining experiment.
A Product Configuration Approach for Maximum Customer Satisfaction
Authors: Lu Chang Ming , Zheng Shu , Jin Wei , Hu Bin , Sheng Yan Fa
Published: July 2011

Given the customer requirements for personalized product increased, the contradiction between actual products and customer satisfaction was existed. Analyzing the present situation of design templates, the product configuration approach based on design templates was proposed. The importance of template objects was sorted in descending to enhance the customer satisfaction for configuring product. A typical application of a small agricultural machinery product design was given to demonstrate the feasibility and effectiveness of the design approach.
Optimization of Storage Method for Video Segment Captured by Embedded System in Camera
Authors: Yan Wei
Published: July 2011

Video processing and cache capacity in embedded system in camera is the key to decide intelligence of shooting system. In particular, to meet the demand for continuous monitoring in video surveillance environment, the embedded system must be able to store the video in case of failure in network or server. In this paper, a storage method for videos with fixed size is proposed, which can effectively restrain occurrence of fragment during storage and raise I/O performance while ensuring continuity of monitoring. Furthermore, storage of video data based on H.264/AVC encoding system and its optimization are also discussed.
Solving Data Exchange Problem Based On Improved Chase Approach
Authors: Ma Wu Bin , Tang Zhi Yong , Deng Su , Huang Hong Bin
Published: July 2011

Data exchange is one of the key problems of information integration. The most important process in data exchange problem is how to solute it based on circulatory dependence. In this paper, we proposed an improved chase approach in the special background of application for the data exchange. Solving the problem that finding the most approximately solution in polynomial time for data exchange problem by amending the dependence condition appropriately.
Design of Hospital Ward Integrated Management Information System
Authors: Li Ping , Li Xiao Yu , Zeng Ling Ke , Wu Bo
Published: July 2011

This document expands on the entire developing course of hospital ward integrated management information system. At first, it introduces the state of the art of domestic and abroad, develops background and the main research contents. Then, it analyses the designing and implementation of the system, and expands on the related technology used in the system.
The Finite Difference Solutions of a Chemotaxis Biological Model
Authors: Wang Xia , Guo Chang Hong , Fang Shao Mei
Published: July 2011

This document demonstrates the finite difference solutions of the Chemotaxis biological model by the finite difference method. Then we establish the convergence and stability of the finite difference solutions by a priori estimations. At last, the numerical results are given.
Viscous Force Model Analysis of Magnetic Viscous Effect in Magnetic Fluid
Authors: Liu Hong , Liu Gui Xiong , Ye Jian Jun
Published: July 2011

From the perspective of microscopic mechanism to study the origin and the macroscopic behavior of the magnetic viscosity characteristics need to discuss the magnetic viscosity effects of the magnetic fluid dynamics, and the magnetic viscous forces in the magnetic fluid dynamics equations is the root cause of the magnetic viscosity effects. In the paper, the common expressions of first-order viscous force and quatratic viscous force of the magnetic fluid are derived from combining the magnetic fluid viscosity expression forms under different concentrations together, while based on the molecular circulation theory and electromagnetic dynamics principle, the quatratic magnetic viscous force model of magnetic fluid is derived from the basic relationship between the magnetic relaxation process. Furthermore the coefficient correction model of the quatratic viscous force is given when the solid particles of magnetic fluid present the formation of chain. Finally it shows the magnetic fluid viscous force model and a clear description of the external magnetic field influence on the magnetic fluid viscosity changes.
Stress Simulation for DE-GMAW in Bonding Steel with Aluminum
Authors: Wu Ming Liang , Huang Jian Kang , Han Ri Hong , Shi Yu
Published: July 2011

DE-GMAW (Double-Electrode Gas Metal Arc Welding) is a new welding technology. It is possible to change the melting current while the base metal current still be controlled at a desired level because the changed part of the melting current would be bypassed without flowing through the workpiece. So the heat input of base metal can be controlled accurately in DE-GMAW, and this welding method is suitable for dissimilar metal welding which has strict requirements for heat input of base metal, such as joining of steel and aluminum. On the basis of heat source model of DE-GMAW, numerical simulation and analysis on temperature field and residual stress for DE-GMAW in bonding steel and aluminum were done. The results show that residual stress after welding changed sharply from close 0 MPa to about 130 MPa at the interface of aluminum and steel. This value is greater than the binding force of steel, aluminum interface.
Numerical Modelling of Hyperthermia and Hypothermia Processes
Authors: Majchrzak E. , Mochnacki Bohdan , Dziewoński M. , Jasiński M.
Published: July 2011

In the paper the results of different numerical solutions of bioheat transfer problems are presented. The base of numerical algorithms constitute the models containing the bioheat transfer equation (or equations) and the adequate geometrical, physical, boundary and initial conditions. In the first part of the paper the solutions concerning the transient temperature field in the biological tissue subjected to the strong external heat sources (freezing, burns) are presented. Next, the examples of sensitivity analysis application in the range of bioheat transfer are discussed. In the final part of the paper the inverse problems are formulated and the example concerning the identification of thermal parameters is shown.
Thermodynamic Properties of AlNi Intermetallics under High Pressure
Authors: Wang Hai Yan , Xu Dong Xia , Yu Jin Bang , Li Xu Sheng , Hu Qian Ku
Published: July 2011

The thermodynamic properties of AlNi are investigated by the full-potential linearized muffin-tin orbital (FP-LMTO) scheme within the generalized gradient approximation correction (GGA) in the frame of density functional theory. The calculated lattice parameter and bulk modulus are in excellent agreement with the experimental and other calculated results. Through the quasi-harmonic Debye model, in which the phononic effects are considered, the dependences of relative volumeV/V0on pressureP, cell volumeVon temperatureT, linear thermal expansion α and specific heatCVon temperature and pressure are successfully obtained.
A Production Planning and Scheduling Architecture for Networked-Manufacturing System Based on Available-to-Promise
Authors: Wang Wen Hao , Zhu Qiong , Zhang Jie
Published: July 2011

In the practical application of push-pull based production planning and scheduling architecture, the manufacturing system was found lacking of collaborative mechanism, especially for a networked-manufacturing environment, which requires each individual manufacturer interact and cooperate with each other for a collaborative manufacturing. This paper presents a production planning and scheduling architecture for networked-manufacturing system based on available-to-promise, which can effectively merge forecast-driven production activity with order-driven production activity, thus ensures the steady and prompt supply of material, and also cooperation and mutual benefit of individual manufacturer. This architecture consists of 1) an ATP-based order management and decision-making system, 2) a push-pull based multi-plant master production schedule collaboration model, 3) a pre-reactive collaborative replenishment model, 4) a production scheduling model of unrelated parallel machine and 5) the corresponding production planning and scheduling methods for each model. By combining the concept of ATP, this architecture can not only provide resource planning for networked-manufacturing system, but also offer quick response and promise to customer requests.
Study on Adsorption of CaCO3 in Metal Surface Based on Electrochemical Techniques
Authors: Cao Sheng Xian , Hao Da Yong , Ou Jia , Zhang Yan Hui , Sun Jia Wei , Yang Shan Rang , Xu Zhi Ming
Published: July 2011

The study of calcium carbonate adsorption is important significance to understand the fouling mechanism that is a major component of heat exchanger fouling. The influence on the adsorption of CaCO3 crystallization fouling was researched in different material, roughness and supersaturation by the electrochemical impedance-time method. The results show that the material is not the essential influence on CaCO3 absorption by analyzing the CaCO3 adsorption layer data. The optimum conditions of maximum adsorption CaCO3 quality: the roughness of the electrode polished by the sandpaper of 360 mesh, the supersaturation of 0.291g / L CaCO3 solution. The experimental results of supersaturation are concordant with the roughness experiments. When the supersaturation is the middle value, the maximum adhesive force can reach the maximum. So the regulation of calcium carbonate supersaturation and roughness of heattransfer equipment can prevent the fouling. This study is a powerful detecting method to research the influence of the roughness on the adsorption of CaCO3 crystallization fouling.
Experimental Study on the Relationship between Mercury Enrichment Coal and the Depth of Coalseam
Authors: Wu Jiang , Zhang Jin Hong , Zheng Shuai , Zhang Yan Yan , Pan Wei Guo , Ren Jian Xing , Chen Song , Ding Kai , Zhang Tai
Published: July 2011

The mercury concentration in the coals from Datong and Xiaoyi, Shanxi has been measured to study the relationship between mercury enrichment in coal and coalseam depth. Ten samples were researched, of which 7 coal and rock samples from the main coalseam and the places around it were collected at a miner in Datong city, and 3 coal samples from three coalseams at a miner in Xiaoyi city. The mercury concentration in the coal and rock samples was measured with US EPA Method7471, which is a standard method recommended by the US EPA. The results show that the mercury enrichment in coal is higher than that in rock in the same conditions, and the mercury concentration in the longer-buried coal is higher than that of the shorter-buried. However, the mercury concentration in coal with depth has no definite linear correlation, varying in different coal fields.
Bending Deformation Analysis in the Basic Forms of Axisymmetric Sheet Metal Forming
Authors: Qin Si Ji
Published: July 2011

In basic sheet metal forming process such as cylindrical deep drawing, bulging, hole flanging (or reaming), etc., deformations in-plane can be considered as changes of the curvature of different microrings. The deformation of each microring is equivalent to a bending process of plate with small width. The differential balance equation of the deformation region can be expressed as simple form of unification. The deformations in the symmetry plane of the sheet metal are part of bending and reverse bending, so the bending analysis method can be used to analyze operation. Some results were obtained by the bending analysis method.
Optimization of the Concrete Mix Proportions Centered on Performance after Exposure to High Temperature
Authors: Chaboki-Khiabani A. , Bastami M. , Baghbadrani M. , Kordi M.
Published: July 2011

This paper presents the results of an experimental and statistical study on the effect of high temperatures on the retained mechanical properties of high-strength concretes (HSC). The mechanical properties of HSC significantly change during and later than exposure to elevated temperature. The compressive and splitting tensile strength of more than 400 HSC cylindrical specimens with sixteen mix proportion have investigated to study the effect of mix proportion on the retained mechanical properties of HSC specimens after heating. According to these results, a considerable loss was observed for all mixes and specimens in strength particularly in tensile splitting strength. In addition, these experimental data were investigated using Taguchi approach to find the effective parameters of mix proportion. Also, the most optimum mix proportion was found and checked experimentally. According to our results, by controlling some factors in the mix proportion, it is possible to reduce the retained destructive effects of elevated temperature on HSC specimens.
A Method for Seismic Capacity Evaluation of CFST Arch Bridges
Authors: Xie Kai Zhong , Qin Le Qin , Lv Wen Gao
Published: July 2011

Based on strength and ductility, the seismic capabilities of the chords of arch ribs, web members, horizontal integrations, suspenders and beams of suspenders of concrete filled steel tube (CFST) arch bridges are studied, then the seismic capability of the bridge is obtained. Firstly, the internal forces of the members are calculated respectively by finite element under the actions of gravity representative value and small earthquakes (0.05g). Then the ultimate bearing capacities, the ratio of ductility and the reduction coefficients of earthquake are obtained according to the failure modes. Finally, yield accelerations of ground movement are multiplied by the reduction coefficients of earthquake, which the resistance seismic capabilities of the members Ac are obtained. The seismic capability of bridge is the minimum Ac. Taking Nanning Yonghe Bridge that is a 346m CFST arch bridge as example, the seismic capability is evaluated that the bridge can resisted the earthquake which the acceleration of ground movement is respectively 0.677g. The results show that the method of seismic capability evaluation is a feasible and efficient method for seismic capability evaluation of CFST arch bridge.
EMG Signal Decoded Based Virtual Artificial Intelligence Hand Control System
Authors: Yu Long , Gen Yan Juan , Tao Dan Dan , Zhou Guo Dong , Chen Liang , Li Guang Lin , Wu Lu Shen
Published: July 2011

An electromyography (EMG) decoded based virtual artificial intelligence control system has been developed to quantify the performance of real-time control of a multifunctional myoelectric prosthesis. To develop this platform system, a three-dimensional upper limb was simulated by using Solidworks and then implemented into an integrated scene of virtual artificial limb ,which was programmed in virtual reality modeling language (VRML) and performed through Simulink toolbox of the MATLAB. By decoding surface electromyography (sEMG) signals collected from arm muscle surface, the platform system can identify thesix classes of different arm and hand movements and control the virtual artificial limb and/or the physical arms simultaneously. The VR-based platform also provides a relaxant and enjoyable training environment for prosthesis-users in clinic.
A Control Method for Active Power Filters with Three-Level NPC Inverter
Authors: Guo Chen , Gui Cun Bing , Chen Zhong Ren
Published: July 2011

This paper researches control problem for active power filters with three-level NPC inverter and proposes a novel PI control algorithm for tracking harmonic command current. This novel PI control algorithm can suppress the periodic error in the whole system to achieve zero steady error tracking. In this scheme, the state variables are estimated with a state observer to cancel the delay of one sampling period in this digital control system. Harmonic current is predicted with a repetitive algorithm simultaneity, which makes use of the repetitive nature of load current. The controller is analyzed and designed in the paper, and the experiment results illustrate that this APF can be controlled in a satisfactory way.
A Blend Control Scheme of Active Power Filter Based on Harmonic Voltage
Authors: Guo Chen , Gui Cun Bing , Huang Jian
Published: July 2011

This paper proposes a blend control scheme of APF based on harmonic voltage to solve the problem that load current detection APF cannot change the harmonic impedance in distribution system. In addition, based on the relationship between the rated volt-ampere of APF and the load volt-ampere, the conductance value could automatic adjustment. Computer simulation and laboratory system are designed and constructed to verify the validity and effectiveness of the shunt active filter equipped with the blend control. The shunt active filter with blend control not only can compensate the nonlinear load harmonic current but also can help to damp the harmonic voltage in distribution system.
An Energy Efficiency Task Allocation Method Based on Reasoning Model in Wireless Sensor Network
Authors: Tian Wang Lan , Lei Hong Yan
Published: July 2011

In this paper, a reasoning model is proposed for energy efficiency task allocation in wireless sensor network. The presented energy efficient contract net protocol is used to implement the negotiation process. Multi-issue scoring function can evaluate the offer with multi-issues in a quantifiable way. An energy threshold is brought to decrease communications which will turn out to decrease nodes’ energy consumption. And the usage of energy threshold also promote the nodes with high level energy have more chance to implement tasks. The simulation results show that the allocation model has outstanding performance maintaining a fair energy balance and is energy efficient in negotiation process.
Research of the Iron Element Content and Evolution of the Surrounding Area of Weinan
Authors: Hu Ming
Published: July 2011

In this paper, it is aimed at the agricultural soil after harvest in WeiNan and its surrounding countries, researching the importance of the iron element in soil, animals and plants. organic substance content low, and the iron content also generally low. It can be broadly ranked as following: Pucheng ＞ Fuping ＞ Hancheng ＞ Dali ＞ Tongguan . The distribution of iron content of agricultural soil over the Weinna area, that is to say, is the East south low and increasing from the Eastsouth (Tongguan) to the other neighboring countries. And to some extent there minimum and maximum in each county. Natural conditions and human factors contributed to the differences in soil iron content and distribution.
Numerical Investigation of Geometric Factors for Design of High Performance Air-Jet Pumps Using in Vehicle-Mounted Vacuum Toilet
Authors: Gao Fei , Zhou Jing Xuan , Li Min
Published: July 2011

Air-jet pump as the pneumatic source of a vehicle-mounted vacuum toilet provides the vacuum to pump the fecal sewage out of toilet bowl via the compressed air passing through the pump under certain pressure. In this study, Computational Fluid Dynamics (CFD) technique is employed to investigate the effects of three important air-jet pump geometry parameters: the primary Nozzle Exit Position (NXP), the constant-area section length (L1) and the diffuser diverging angle (θ), on its performance. A CFD model is firstly established according to 1D analytical method, and then used to create 135 different air-jet pump geometries and tested under different operating conditions. The significance of this study is that these findings can be used to guide the adjustment of NXP, L1 and θ to obtain the best air-jet pump performance when the operating conditions are different.
Research of Concept-Resources Maps Authoring System
Authors: Wei Yi , Jun Xiao , Xue Li
Published: July 2011

Concept-Resources Maps Authoring System is an independent software R&D by Shanghai Distance Education Group. Concept-resources maps conceive a new way to exhibit education resources. With the help of Concept-Resources Maps Authoring System(CRMAS), teachers and students can combine and organize education resources by means of concept maps.This paper first introduced research background, analysised meanings and main features of CRMAS, then analyzed the system’s architecture and RIA technology, and finally introduced its application in 52 laboratory schools in Shanghai.
A Study on Improved Real-Time Eye Region Detection Method for More Realistic Facial Expressions Recognition
Authors: Jung Sungmo , Kim Seoksoo
Published: July 2011

Many 3D films use technologies of facial expression recognition. In order to use the existing technologies, a large number of markers shall be attached to a face, a camera is fixed in front of the face, and movements of the markers are calculated. However, the markers calculate only the changes in regions where the markers are attached, which makes difficult realistic recognition of facial expressions. Therefore, this study extracted a preliminary eye region in 320*240 by defining specific location values of the eye. And the final eye region was selected from the preliminary region. This study suggests an improved method of detecting an eye region, reducing errors arising from noise.
A Two-Stage Hybrid Algorithm for Flexible Job-Shop Scheduling
Authors: Gao Li , Xu Ke Lin , Zhu Wei , Yang Na Na
Published: July 2011

A mathematical model was constructed with two objectives. A two-stage hybrid algorithm was developed for solving this problem. At first, the man-hour optimization based on genetic algorithm and dynamic programming method, the model decomposes the flow shop into two layers: sub-layer and patrilineal layer. On the basis of the man-hour optimization，A simulated annealing genetic algorithm was proposed to optimize the sequence of operations. A new selection procedure was proposed and hybrid crossover operators and mutation operators were adopted. A benchmark problem solving result indicates that the proposed algorithm is effective.
3D Numerical Combustion Simulation of Designed Low Heating Value Fuel Combustor for Further Detail Modulation
Authors: Leu Jai Houng
Published: July 2011

This study applied three-dimension numerical combustion simulation method to design the specifications of a low heating value (LHV) fuel combustor. According to the discussion on design parameter system, quantity of main jets is the governing factor for flame stabilization of the primary combustor zone. Combustor outlet temperature factor improves with increase of load, and can be reduced to 0.33 under full load. However, load increase may slightly change recirculation flow structure and weaken flame stabilization. The findings showed that the combustion strength of near-field area greatly increased, and the recirculation flow structure center moved to the liner well when combustor used propane as fuel. This also caused deterioration of temperature factor.
Model Reference Adaptive Control on a Hydraulic Servo System
Authors: Qu Zhi Yong , Ye Zheng Mao
Published: July 2011

Hydraulic servo systems are usually used in industry. This kind of system is nonlinear in nature and generally difficult to control. The ordinary linear constant gain controller can cause overshoot or even loss of system stability. Application of adaptive controller to a nonlinear hydraulic servo system is investigated in this paper. The dynamic model of the system is given and the stability is also analyzed using Popov's criterion. The steady state error can be eliminated using adaptive controller combined with an integration term. Simulation results show the performance of adaptive controller with fast response and less overshoot
Speed Regulation of a Permanent Magnet Synchronous Motor via Model Reference Adaptive Control
Authors: Qu Zhi Yong , Ye Zheng Mao
Published: July 2011

A speed estimation technique for the permanent magnet synchronous motor drive is presented in this paper A Model Reference Adaptive System (MRAS) has been formed using the voltage and current to estimate the speed. It has been shown that such unique MRAS offers several desirable features. The proposed technique is completely independent of stator resistance and is less parameter sensitive, as the estimation-algorithm is only dependent on q-axis stator inductance. Also, the method requires less computational effort as the simplified expressions are used in the MRAS. The stability of the proposed system is achieved through Popov’s Hyperstability criteria. Matlab simulation results are presented to validate the proposed technique.
Study on the Preparation Process for High Accuracy Micro Machining by Wire Electrical Discharge Machining
Authors: Cheng Xiang , Zhang Xi , Liu Jun Ying , Tian Zhong Qiang
Published: July 2011

Micro machining by wire electrical discharge machining (WEDM) has become prosperous owing to its ability to machine conductive, exotic and high strength and temperature resistive (HSTR) materials with the scope of generating intricate shapes and profiles. In order to achieve the very high accuracy micro machining, one of the key factors is the preparation before actual machining. According to the authors' experiences and studies in micro machining by WEDM, for the first time, this paper introduces the preparation process for WEDM in micro machining. From the gauge setup, wire alignment adjustment, working coordinate setup to calibration method for rotational axis, the preparation process has been studied and introduced in detail, which forms the solid basis for high accuracy micro machining by WEDM. Experimental results show the accurate geometrical features can be fabricated based on the proposed preparation process.
Block Adjustment for Generic Geometric Model Using Points and Straight-Lines
Authors: Long Teng Fei , Jiao Wei Li , Wei Wang
Published: July 2011

The characteristics of straight-lines and points were discussed first, and a geometric correction method based on straight-line features was introduced. In this paper, a block adjustment method combining points and straight-lines was deduced, and this method is not confined to a specific imaging geometric model, and can be applied to different data sources. Analysis of the applicability of the proposed block adjustment method shows that, bundle aerial triangulation and block adjustment with tied straight-lines is feasible. However, when this method is applied in stereo modeling from stereo-pair images, additional control data is needed.
Research on the Growth of Productivity of the Soybeans in China Based on Malmquist Index Methods
Authors: Cui Ning Bo , Yu Xing Ye
Published: July 2011

This work is a periodical achievement of the Post-doctors’ Funds of the mobile post doctoral center in Crop science, Northeast Agricultural University, Heilongjiang. And the title is “Research on the Yields of the Crop and the Peasants’ willingness to plant”. And it is also the periodical achievement of the Startup Foundation for Scientific Funds in Northeast Agricultural University, which is named “Research on the supportive policy of the soybeans industry based on the security of soybeans industry ” (Program Number:2009RC06) .
Dynamic Simulation of a Wind Turbine Driven Doubly Fed Induction Generator under Wind Fluctuation
Authors: Chen Hung Cheng , Kuo Cheng Chien
Published: July 2011

The wind is the main driving force of wind turbine, which directly affects the dynamic responses of generator. Due to its randomness and intermittence, wind energy has great impact on the quality and security of the operation of power system. The aim of this paper is to study the influence of wind speed fluctuation on the dynamic responses of the doubly fed induction generator (DFIG) connected to a power system. The mathematical models of a 3.6 MW DFIG and different wind speed patterns are first derived. The MATLAB/Simulink software is then utilized to model the DFIG, grid-side converter, rotor-side converter, and the wind speed patterns. Simulation results obtained from these models are used to analyze the effects of wind speed fluctuation on the system dynamic responses.
The Application in TheTubular Furnace Control System Based on OPC Technology
Authors: Chen Zai Ping , Li Xing Jun
Published: July 2011

In the industry of petrochemical, tubular furnace is a kind of energy-consumption device, therefore it appears especially significant for its controlling. Usually, it adopts kingview software for simple monitoring, which hardly lowers consumption. Moreover, because of the limitation of compiling control arithmetic, it becomes unrealistic for complicated control requirements. While MATLAB is equipped for powerful function of numerical analysis and computing, it can accomplish the designation for the complex intelligent controller and data analysis processing. The two complement each other can realize the real-time control of combining Kingview with MATLAB, but the key technology is to realize the real-communication of them. In this paper, OPC technology based on the standard interface is illustrated, and on this basis, the program of the real-communication between King view and MATLAB based on OPC is introduced. The thesis takes tubular furnace temperature control before and after preheating for example, and finally proves the advantages complementation between kingview and MATLAB, which supplies an efficient path for realizing complex control arithmetic.
Research and Improvement of Deficit Round Robin Algorithm Based on CAN Bus
Authors: Chen Zai Ping , Guo Yan Lei
Published: July 2011

The data transmission on CAN bus is decided by priority, That is the data with high priority can always be transmited by inturrupt the data transmission with low priority .In that case the data with lower priority may not be transmitted for a long time .To sove such problem we use DRR scheduling algorithm ,But in the case of too many unexpected data ,The scheduling results are poor .In view of such situation this paper put forward a solution allocation quotas dynamicly according to the current network state . And setting up a CAN bus system simulation platform in which conducted a simuliation experiment.The result show that the improvement strategy work well at any situation.
Customers Segmentation Using RFM and Two-Step Clustering
Authors: Yao Lei Yue , Xiong Jian Ying
Published: July 2011

Analyze RFM (recency, frequency, and monetary) paradigm with customer, and use two-step clustering to segment the customers. It is divided into five levels includes core customer, potential customer, new customer, worthless customer and lost customer. And then through the AHP to determine weights of RFM three dimensions of each cluster for further quantitative analysis of the cluster. Sort the lifetime value of customers according to scores of each type customer
Research on Heterogeneous Data Integration of Coal Mine Safety Monitoring Based on GIS Technology
Authors: Chen Hu , Huang Li Yan
Published: July 2011

Coal mine safety information’s remote monitoring, browsing, querying is the general trend of Chinese coal industry information development. The paper analysis coal mine safety monitoring based on heterogeneous data sources, depth study heterogeneous data integration technology. At last, the paper proposed and designed based on OPC technology heterogeneous data integration’s overall program of coal mine safety monitoring. After tested the system is stabled and achieved good results in practice.
The Application of Case Teaching Method in “Basis of Computer Engineering” Courses
Authors: Zheng Quan Lu , Wang Xue Chun , Zhang Ya Juan
Published: July 2011

The thesis analyzed the actuality and the problems that existed in the “basis of computer engineering” courses, put forward the case teaching program with an interpretation of its theoretical basis, and discussed the practical implementation in detail. It has been found that, case teaching can greatly improve students’ initiative and creativity in study, and has acquired better teaching results.
Analysis of Crack-Inclusion Interaction in an Anisotropic Medium by Eshelby Equivalent Inclusion Method
Authors: Zeng Xian Wei , Luo Xi
Published: July 2011

The problem of a semi-infinite crack in anisotropic medium interacting with a near-tip inclusion is analyzed by the Eshelby equivalent inclusion method. The change of mode I stress intensity factor due to crack-inclusion interaction is evaluated using a novel analytical solution for the model I stress intensity factor at the tip of a semi-infinite crack due to near-tip eigenstrains. Numerical results of the mode I stress intensity factor due to the presence of a near-tip circular inclusion are presented to show the influence of the elastic stiffness of an inclusion on the near-tip elastic field. The present scheme can be applied to calculate the stress intensity at a crack-tip in anisotropic media due to the interaction of inclusions with arbitrary shapes.
An Empirical Study on Identification of False Accounting Information of Listed Companies -Based on the Comparison between Logistic Regression Model and Multiple Eigenvalues Detection Model
Authors: Guan Ai Hao
Published: July 2011

In this study, multiple eigenvalues detection model has been put forward and empirical analysis and comparison between logistic regression model and multiple eigenvalues detection model has been conducted in the same sample on the basis of overall data. The results have showed the characteristics of accuracy, stability or extensive adaptability of multiple eigenvalues detection model in detecting false accounting information.
A Study of Website Optimization Strategy and Implementation
Authors: Ho Li Hsing , Lu Meng Huang , Ho Hui Yi , Peng Tien Fu
Published: July 2011

Internet users will usually use search engine to find the relevant traveling information before planning the trip, and search for suitable hotels and book hotel accommodation rooms in advance through the internet reservation system .The hotel website search engine marketing strategy has become an important part of the hotel marketing management. The study found that " research and implementation methods have obvious actual benefit", “recommend to conduct some of the implementation methods prior to the building of Web site ", " in Blog Article Marketing, ‘Sina Blog " import flow is high ", "in Free Platform And BBS marketing, ‘PChome & ebay " import flow is high etc; Researchers suggest the hotel sites operators continue to implement the hotel Web sites search marketing in the future through methods such as "assist with paying keyword advertising marketing" and "add more links to external website", "set up their own official blog" and " and “conduct Facebook, Plurk Twitter marketing” and etc.
A Time-Frequency Analysis for Deflection of a Cutting Disc Used in Sawing Process
Authors: Ucun Ismail , Hocaoğlu Fatih Onur , Gorgulu Sukru
Published: July 2011

Cutting discs are affected by various forces which cause stresses and deflections on the discs. Lateral deflection is one of the most frequent. It is important to know that major lateral deflections can cause undesired failures on the disc. In this study, time/frequency analysis of deflection on a cutting disc used in metal sawing process has been performed. The deflections are measured by using a laser device called KEYENCE and data recorded during the cutting process. The data sequence is converted into frequency domain with Fourier transform techniques and frequency components are analyzed. It is observed that some frequency components carry important information about the process. Using this information, the starting and ending times of cutting are determined and presented.
First-Principle Calculation on Lithium Insertion of NiSn3Sb4 Alloy
Authors: Li Yan Ling , Ru Qiang
Published: July 2011

The first-principle calculation method with plane-wave basis and pseudo-potentials was employed to investigate the intercalation/extraction mechanism of lithium in NiSn3Sb4. The insertion/substitution formation energies and the electronic structures of NiSn3Sb4as well as its lithiated products were studied in order to research the migration path of lithium intercalation. The results show that lithium would firstly occupy interstitial sites, then Ni and Sn atoms are replaced gradually by additional lithium. The dissociated Ni atom can relieve the volume expansion and improve the recycling performance of the crystal. It can be also found that as lithium atoms insert into host material, intense electron transport from Li2s to Sn5p and Sb5p occurs at the Fermi level.
A Class of Gradient-Type Methods with Perturbations
Authors: Li Mei Xia
Published: July 2011

In this paper, a new kind of method which are called gradient-type method with perturbations are proposed and a new kind of nonmonotone line search technique is employed. At the same time, global convergence of these methods is proved only in the case where the gradient function is uniformly continuous on an open convex set containing the iteration sequence.
Research on Quantitative Model of Path Planning for Mobile Robots
Authors: Ye Jian Ping , Shi Lin Xiang
Published: July 2011

According to free configuration space, the skeleton graph of working environment of mobile robots was constructed. The length of link of skeleton graph was quantified according the actual length of pathway and presented with quantitative length matrix. The width of link of skeleton graph was quantified by the width rate of pathway and robot body, and presented with quantitative width matrix. For a pathway with width changing, the width was quantified according to the minimum width of the pathway. For multiply pathways between two vertexes, the pathways were merged into one pathway. In dynamic environment, the matrix value of link was set to -1 for a pathway with obstacles. In Dijkstra algorithm, the coordination path planning of multiply robots was implemented by comparing the remaining capacity of pathway width and the robot body.
Numerical Simulation of Sea Ice Compressional Strength with Discrete Element Model
Authors: Li Hai , Liu Yu , Bi Xiang Jun , Ji Shun Ying
Published: July 2011

The compressional strength of sea ice is a key parameter to determine the interaction between ice cover and offshore structure. In this study, the discrete element model (DEM) with particle bonding function is adopted to model the sea ice compressional strength. The bonding strength is set as a function of the ice temperature and ice salinity, and their influences on sea ice compressional strength are observed. The simulated results are compared well with the physical experimental data. With the improvement of this DEM, the ice load and ice-induced vibration of offshore structure can be simulated.
Application of USB High-Speed Signal Lines in the Analysis of Electromagnetic Interference
Authors: Lin Chun Ting , Wang Jing Min , Lin Shieh Shing
Published: July 2011

In this paper, authors focus on the influence during the using of USB2.0 Interface board in reading and/or writing radiation arisen from the electromagnetic interference and provide some suggestions. This work employs two typical common using device, WIREWOUND filter and multilayer filter under the environment of the resistance of 90 ohm and 180 ohm to execute the analysis of the electromagnetic interference measurement. Numerous simulations have been made and obtain some successful results.
Crystal Structure and Electronic Properties of Graphite-Like C7N Phase from First-Principles Calculations
Authors: Hu Qian Ku , Han Hai Yan , Wang Hai Yan , Wu Qing Hua
Published: July 2011

The structural and electronic properties of graphite-like C7N compound have been calculated by using first-principles pseudopotential density functional method for ten possible C7N configurations, which are deduced from graphite and hexagonal boron nitride unit cell. The calculated total energy results show that the configuration C7N-I with AA stacking sequence along the c-axis based on hexagonal BN structure has been shown to be the most stable structure. From the calculated electronic band structures and electron density of states, the monolayer and bulk phase of C7N are expected to show insulating and metal states, respectively. The graphite-like C7N phases have been predicted to be a stable phase at ambient conditions by formation energy and elastic constant calculations. A critical pressure of about 41 GPa is expected for a synthesis of cubic C7N phase from this graphite-like C7N.
Coordination of Product Life Cycle with Product Usage Mode
Authors: Wang Heng , Hou Jin Chang
Published: July 2011

For achieving better environmental performance of products or product systems, it is essential to manage total product life cycle. This paper describes a method for supporting product life cycle management by comprehensive product life cycle simulation, which is a basis for designing and evaluating total product life cycle. For life cycle evaluation, it is important to seek for the better product services, at the same time to seek for lower environmental burden and life cycle management costing. For this purpose, a product usage model is proposed, where customer satisfaction is measured by offered product functionality. The same level of customer satisfaction can be achieved by various different life cycle management options. By taking examples of technologically immature short-life products, like mobile phones, effect of difference of required product service quality is investigated, and appropriate product management strategy is discussed for improving product service quality.
Design and Implementation of Minimum Hop Routing Algorithm with Reliability Assurance for WSN
Authors: He Xuan , Zhao Hai , Yu Bi Ju , Zhu Jian
Published: July 2011

Design of wireless sensor network routing protocol is still a problem that should be solved quickly. Although there are many achievements in this field, they all focus on single one property of WSN( Wireless Sensor Network) such as delay, hop count, energy consumption and so on. Dealing with the distinctive features of wireless channel, a routing strategy named MHRR( Minimum Hop Routing algorithm with Reliability assurance) based on AODV is proposed. Firstly, this paper provides a method which preserves multiple optimum routes by broadcasting and responding data frame; secondly, a routing filter mechanism is proposed to enhance the reliability of the network. At last, the optimum route can be chosen by specific factor in different situations. Experiments show that MHRR strategy is competent to deal with dynamic and bandwidth constrained WSN in reliability and delay.
Simulation of a Wall Jet Flow over a Rectangular Cavity
Authors: Madi Arous Fatima , Mataoui Amina , Terfous Abdellali , Guenaim Abdellah
Published: July 2011

The simulation of a turbulent wall jet flow over a rectangular cavity is realised by the low Re stress-omega model. FLUENT 6.3 CFD code was used as the solver. The structured grid was built using Gambit 2.3. A preliminary study of a wall jet flow and a wall jet backward facing step interaction has been undertaken to validate the turbulence model. The numerical approach reproduces fairly the experimental results. A wall jet flow over rectangular cavities of different aspect ratios was investigated. The cavity aspect ratio effect on the flow structure evolution, particularly on the reattachment phenomenon, was examined in this paper. The results of this study show that the flow structure is very sensitive to the cavity aspect ratio. The reattachment length in the wall jet incoming flow case is very short compared to that of the boundary layer incoming flow case.