bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Cause and Solution to Blocking in Domestic Enterprises ERP Implementation
Authors: Zhao Zhi Hong , Wang Yun Jin
Published: September 2013

ERP makes enterprises more powerful in information age. Only a few of the domestic enterprises succeed in ERP implementation. According to the experience of ERP implementation, this paper introduces the cause of blocking in ERP implementation. At the same time, this article presents lots of solutions to the problem. Also, this paper presents humanizing and overall planning implementation ideology under the Chinese enterprise culture.
Research on the Relationship among Enterprise Employee's Job Satisfaction, Organizational Commitment and Job Performance
Authors: Ma Ling , Xing Yun , Wang Yu , Chen Hao Tian
Published: September 2013

Employee job satisfaction and organizational commitment are the key factors that affecting the performance of enterprise’s employees. Through using empirical research method to explore the relationship among the three with the sample of 330 employees of an enterprise. The results show that: Employees’ job satisfaction have a positive effect on job performance significantly; Employees job satisfaction positive effect on organizational commitment; Organizational commitment played a partial intermediary role in the process of job satisfaction improving performance.
Prototype System of Knowledge Management Based on Data Mining
Authors: Guo Yu Dong
Published: September 2013

Knowledge is a very crucial resource to promote economic development and society progress which includes facts, information, descriptions, or skills acquired through experience or education. With knowledge has being increasingly prominent, knowledge management has become important measure for the core competences promotion of a corporation. The paper begins with knowledge managements definition, and studies the process of knowledge discovery from databases (KDD),data mining techniques and SECI(Socialization, Externalization, Combination, Internalization) model of knowledge dimensions. Finally, a simple knowledge management prototype system was proposed which based on the KDD and data mining.
Engineering of Xinjiang Non Electricity Area and the Project Risk Assessment
Authors: Huang Yuan Sheng , Jia Chun Yan
Published: September 2013

By the end of 2010, Xinjiang has 2754 000 families (10753 000 population) who are not allowable to use electricity. This project is related to the economic development of these areas and is of great importance to enhance people,s welfare. It is also an important project in the Twelfth Five-Year plan. This paper supplies us two realization modes for non electricity area through electric grid extension and new energy power. It is appropriate to seek help from the main grid to extend electricity problems and ensure the stability and security of the electricity in these areas, in which population is relatively dense, or places are good prospects for the development or mineral rich. But for a considerable number of scattered or not fixed farmers and herdsmen, the utilization of new energy to realize the power of their daily life is a good choice. On this basis, this paper carried out the risk assessment of the implementation of the project by using fuzzy analytic hierarchy process.
Control and Ownership Decision in Technology Sourcing Cross-Border M&A on the Resource-Based View and Institution-Based View
Authors: Huang Yong Cong , Huang Man Li , Chen Xiao Mei
Published: September 2013

Chinese companies have actively expanded overseas. However, more and more companies, such as TCL, have found that technology sourcing cross-border M&A cost too much to threaten their survival, rather than achieving their goals. From reviewing previous literatures, we found that control, not the ownership, is the critical determinant. Control is the result of the bargaining power between the acquirer and the target company. Drawing on resources-based view, transaction cost theory and institutions theory, this paper reviews the influencing factors of bargaining power in the control and ownership, and proposes a model of control and ownership for Chinese enterprises technology sourcing cross-border M&A.
A Service Evolution Supporting Smart Meeting Room System
Authors: Gao Yan , Zhang Bin , Lin Li Kun , Li Xiao
Published: September 2013

Obtaining user requirement changes promptly has become a key of the rapid service evolution. Carl K. Chang et al proposed a Situ frame which can promptly obtain user requirement changes through user intention changes identified by user behavior. This paper designs a Smart Meeting Room System(SMRS) based on Situ framework. According to the user action sequence segmenting problem while inferring user intention in SMRS, this paper proposes a user action sequence segmenting approach based on scenario and max entropy, which can effectively support user intention identification. The approach is illustrated by a user action sequence segmenting process instance at the end of this paper.
Application Analysis of Internet of Things in Intelligent Transportation
Authors: Zhang Fei Zhou , He Han Xian , Zhao Li Jun
Published: September 2013

The three kinds of applications of Internet of Things (IOT[) in intelligent transportation are firstly introduced on the whole. Then the highway ETC system and RFID parking management system are expounded. The basic principle, system composition and the system workflow of RFID parking management system in detail. The thorough analysis of the parking management system will provide reference for the future application of IOT in the intelligent transportation field.
Visualization Analysis of Research Overview in the Graphene Field
Authors: Yang Ming Hai , Xue Yan Xiang
Published: September 2013

The methods of personnel selection in Human Resource Management can not meet the screening requirements of academic standards and influence about the scientific and technological talent engaged in graphene research, and it is difficult to obtain a comprehensive worldwide information to researchers in the field of graphene. The article utilizes visualization software CiteSpaceIIbased on knowledge mapping, takes the theme of grapheme included in Web of Science as data resources, to draw and analyze knowledge maps of the grapheme field literature, and explores the region distribution, main knowledge cluster, representatives, classic literatures, research front and trends in the grapheme field. This can help us to grasp the whole development of the field. Moreover, this can provide the decision making support for introduction of high-level scientific and technological talent.
A Probe into Talent Training Mode in Higher Vocational Education
Authors: Wang Huan Yun , Diao Li Jing
Published: September 2013

In the twenty-first Century, with the rapidly development of social economy, the society needs a large number of highly skilled talents, and higher vocational education must meet needs of the evolving society based on its peculiar talent training mode. This article discusses the talent training mode in terms of the professional structure adjustment in higher vocational colleges, the reform of teaching plan and content, practical teaching system construction, teacher training, school-enterprise cooperation, and put forward our own viewpoints.
The Research and Practice of Embedded Teaching Reform Based on CDIO
Authors: Hu Guo Xiong , Huang Li
Published: September 2013

The CDIO (Conceive, Design, Implement and Operate) engineering education model emphasizes on learning from practices, it is a central manifestation of the principle of learning by hands on. Paper exemplify by embedded system course, focusing on 12 Basic principles of CDIO teaching mode, it states in details that from Curriculum system construction, teaching methods to teacher training etc. about reform methods. This means it is very helpful to other majors of engineering course.
Effects of Polyvinylamine and Polyvinyl Alcohol on DOP Migration of PVC Film
Authors: Deng Yu Pu , Du Lin Xue , Li Xi Hong , Liu Xia , Liu Hai Jiao
Published: September 2013

The novel packaging was synthesised by coating polyvinyl chloride (PVC) film with Polyvinylamine/Polyvinyl alcohol (PVAm/PVA) mixture which can effectively inhibit the migration of DOP in this paper. The effect of PVAm/PVA mixture on inhibiting DOP migration was detected via extraction tests. The results showed that the novel packaging significantly reduced the migration rate of DOP compared with the control (PVC film). After 24h extracted by hexane 40% PVAm in mixture being coated on PVC had the lowest migration rate (6.20%) among the samples, while 7.60% is the migration rate of control sample. Tensile properties analysis indicated the elongation at break and tensile strength of samples coating PVAm/PVA higher than control sample. The thermogravimetric analysis demonstrated that the PVAm/PVA mixed solution can deduce thermogravimetric rate. Therefore, coating PVC with PVAm/PVA mixture is an effective approach to suppress the migration of DOP.
Numerical Simulation of Semi-Solid Die Casting of ZA Alloy Automotive Bushing Based on AnyCasting
Authors: Liu Han Wu , Zhang Zhi Ping , Luo Yan Fang , Lu Li
Published: September 2013

In order to reduce the wear of parts caused by long-term friction, and to reduce the frequency of parts replacement, ZA alloy with low hardness and good wear resistance is chosen to replace the traditional copper alloy as the material to manufacture automotive bushing, and the semi-solid die casting is used. On this basis, the software AnyCasting is used to simulate and analyze the filling and solidification process, the filling sequence, the variation of temperature field, and the part region where defects are prone to occur in the semi-solid process. The simulation results show that under the parameters set in the simulation process, when casting filling rate reached 90%, the metal started to solidify; since the gate place is easy for heat dissipation, when the temperature of the alloy liquid reached its liquidus temperature 595°C, the phenomenon of solid-liquid phase separation appeared at the gate; the defects such as gas trapping, residual stress and deformation would appear both in the place of first filling and the parting surface; when the preheat temperature of the mold was 150°C-200°C,the alloy liquid possesses liquidity. The simulation results offer certain theoretical instruction to optimize the semi-solid casting process of ZA Alloy automotive bushing manufacturing, as well as reducing or avoiding a variety of quality defects arose in the actual casting process.
Modal Analysis of Torque Transmission Gear System Based on FEM
Authors: Shi Xian Jin , Liu Hong Qi , Sun Gang
Published: September 2013

The gear system used for large torque transmission consists of one wheel ring with diameter 1264mm and three pinions with diameter 224mm. This assembly can be used to 440kNm and 20Hz dynamical torque transmission. On the basis of FEM, 3-D gear model was established and modal analysis was constructed by using software ANSYS. Two modal analysis methods were used. One of which was equivalent contact stiffness by simplified into a spring model and the other method was considering the pre-stress in the strength analysis. The latter method is more reasonable than the first one because it contains the nonlinear contact factors. The results show that there is no vibration mode with the frequency below 100Hz and no resonance will appear in the following dynamical torque loading tests.
Systematic Evaluation on Horizontal well Performance in Bottom Water Reservoir
Authors: Li Yun Ting , Yao Yue Dong , Peng Tao , Sang Dan , Wang Xiang Chun
Published: September 2013

Development of bottom water reservoir with horizontal well can effectively slow down water coning and avoid early water breakthrough in oil wells, which promotes the extensive application of horizontal well in bottom water reservoir. In this paper, literatures about horizontal well are investigated, and the latest research trend is summarized. All factors such as reservoirs, fluid property and production mode to influence horizontal well performance in bottom water reservoir are systematically studied by using reservoir numerical simulation. Based on the calculation results of reservoir parameters of the pilot area, comprehensive analysis to the key factors which affecting horizontal well performance is carried out and the influence degree of various factors on oil recovery is obtained. In a word, the research results in this paper can provide criteria for the design or optimization of horizontal well development in bottom water reservoir.
Research on Words Segmentation Technology in Chinese Full Text Retrieval System
Authors: Liu Chang
Published: September 2013

In order to improve the speed of Chinese full-text retrieval in the premise of ensuring Chinese ambiguity inclusion and length limitation, this paper introduces the application methods of Chinese full-text retrieval system and the current application situation of Chinese word segmentation technology. Based on the existed word segmentation algorithms, this paper proposed an improved Chinese word segmentation algorithm. In the proposed method, the procedure of indexing is to construct the map between the relative words in the context and the dictionary. This paper improves the diction to realize better mapping with relative words, so as to realize Chinese words segmentation. The experiments demonstrate that the proposed Chinese full-text words segmentation algorithm is more effective than the existing methods.
Influencing Factors of the Villager Satisfaction with Village Committee Based on Factor Analysis: Evidence from Shaanxi, China
Authors: Lu De Hong , Wan Hong , Zhou Jing , Lu Jing Di
Published: September 2013

This research randomly selected 362 households from 20 villages in Shaanxi Province to study the villager satisfaction with village committee. It divided the factors hypothesized to influence the satisfaction degree with village committee into three categories based on the method of factor analysis and applied logistic regression model to conduct empirical analysis. The result shows that influences including disclosure of village affairs and finance, fairness of village affairs, democratically-managed major events, democratic election, satisfaction with village cadres, satisfaction with the public services of education, roads, electric power, science and technology, hygiene and medical care provided by village committee have significant impacts on the satisfaction evaluation of the village committee. In addition, villagers gender and the status of village cadres also affect the satisfaction evaluation of the village committee. Further, the effect of the factors above has an important characteristic in order and phase.
An Improved XOS Dealing with Nested Loop
Authors: Zhang Xue Min , Xiong Zeng Gang , Ye Cong Huan
Published: September 2013

Propose a model extraction approach to abstract the DTD document rapidly, and to eliminate the nested ring in DTD document by using redefining the node name. Map the DTD document that removing ring out to XML document. Analyzes the XQuery query, and does the responding pre-processing, realizes the XQuery program with nested ring structure.
Information Fusion Based on Improved D-S Evidence Theory
Authors: Pan Guang , Wu Lin Li
Published: September 2013

Dempster-Shafer evidence theory is an efficient method to process uncertain, incomplete and vague information in data fusion. Aiming at the failure of conditional D-S evidence theory in dealing with conflicting evidences, an improved D-S combination rule is recommended. The proposed method utilizes the information quantity of evidence and assigns the conflict factor to every focus element based on average support degree. The simulations show that the proposed D-S combination rule can effectively solve thorny problems for conflicting evidences.
An Agile Development Bidirectional Iteration Model for Project Management Information System and its Application
Authors: Zhang Yue Kun , Cheng Tie Xin , Du Wen Bin
Published: September 2013

With the rapid development of the IT, project management information was focused widely. In this paper, an agile development model based on bidirectional iteration for Project Management Information System (PMIS) was set up, in which the 9 modules of project management can be developed concurrently. Among the different development phases of the modules, the vertical iteration was used, and among the different functions in one module, the horizontal iteration was used. Finally, the model was applied to the PMIS of the Caozhuang pumping station project, which illustrated that with the model the constantly changing demands of the user can be satisfied and the high quality PMIS can be developed in time.
Application of High Performance Parallel Computing Based on GPU
Authors: Yang Liu , Liu Tie Ying
Published: September 2013

This paper introduces parallel feature of the GPU, which will help GPU parallel computation methods to achieve the parallelization of PSO parallel path search process; and reduce the increasingly high problem of PSO (PSO: Particle Swarm Optimization) in time and space complexity. The experimental results show: comparing with CPU mode, GPU platform calculation improves the search rate and shortens the calculation time.
Design and Realization of Network Security Defense Architecture of Medical Information Integration Platform
Authors: Zhan Hong Jun
Published: September 2013

In this paper, based on the characteristics of heterogeneous information integration, a set of complete medical information integration platform network security defense architecture was designed by utilizing network security defense equipment and technologies such as gatekeeper, disk array and hot-standby etc. On the basis of overall design, the construction, deployment and operation of related system were realized. At last, the effectiveness of the network security defense architecture designed and realized in this paper was tested by means of fault injection.
A Research to Ad-hoc and Wireless Sensor Network
Authors: Wu Yuan , Chen Xiao Chun , Tian Zhou He
Published: September 2013

In the current wireless network technology, the most important research is Ad-hoc, and the most promising is the WSN. Ad-hoc which develops on the basis of packet radio network is a wireless mobile network with self-organizing, peer to peer and multi-hop. WSN combines Ad-hoc and sensor technology to collaboratively perceive, collect and process the message of sensing objects in the coverage area of network, and send to the viewer.
Design and Implementation of Buffer Control in EoS System
Authors: He Wei , Zhang Yan Gan , Yuan Xue Guang , Zhang Jin Nan
Published: September 2013

We propose an optimization approach to EoS (Ethernet over SDH) buffer control which the objective is to dynamically adjust the EoS buffer management registers. We will present the improved model of the traffic buffer management based on embedded MCU to control the SDRAM of the EoS chip, and setup the end-to-end system to illustrate the feasibility and advantage of the solution in buffer management when the data transport rate suddenly exceed the bandwidth of Ethernet port.
Optimizing Advertising Using Wireless Communication Technology: A Zero-Inflated Poisson Approach
Authors: Zou Pin Jia , Xu Yan Yan , Wang Jue , Fang Zheng
Published: September 2013

Recently, more and more companies are using wireless location technology to improve advertising effectiveness. Although location-targeted advertising seemingly offers practitioners tremendous potential given the ubiquitous nature of mobile devices, we know very little about it. Base on field experiment data, the developed zero-inflated Poisson model reveals that distance, discount and CSR(Corporate Social Responsibility) could affect sales impact of advertising while using wireless communication technology. These results have implications for mobile marketing research and practice while using wireless communication technology.
A Design on USSD Session Flow Based on SMPP Protocol
Authors: Zhang Shi Jun , Ma Li Fei
Published: September 2013

This paper is mainly to introduce The Short Message Peer to Peer (SMPP) protocol, and one of it’s major application to Unstructured Supplementary Services Data (USSD). The author intends to utilize SMPP protocol to realize a basic USSD Session flow.
Parameter Measuring System Based on STM32
Authors: Shi Yao Liang , Zheng Guang Yu , Wu Li , Peng Shu Sheng
Published: September 2013

A parameter measuring system is introduced in this paper, which is used for recording the temperature and humidity, atmospheric pressure, rotation speed and acceleration, etc. The system uses a 32-bit RISC microprocessor of STM32F103ZET6 based on the core of ARM Coretex-M3 as master chip. And it writes the data recorded to NAND FLASH. After it finishes, it copies the data to host-computer through SD card.
A Study of Fragmentation and Reorganization Mechanism in Video Production and Distribution Process
Authors: Ma Li Ming , Su Zhi Wu , Cao San Xing
Published: September 2013

Fragmentation is the most important trends across all media platforms, with the aim of reorganizing and disseminating information in a more personalized way according to the "Long Tail Demand" theory. This paper proposes a fragments reorganizing plan, which considering sequential video, UGC video, graphic, text and social media information as the equivalent information source, utilizing a unified metadata format to describe media resources multi-dimensionally. The implementation of virtual segmenting for video allows a more flexible control of the granularity and achieves a rich content presentation and interactive behavior when combined with interactive scripts.
Combined Feedback and Feedforward Control for an Inertial Stabilization System
Authors: Malithong Kritsanun , Sangveraphunsiri Viboon
Published: September 2013

This paper presents environmental disturbance rejection in a 2-DOF inertial stabilization system by a combination of feedback and feedforward control. For feedback control, sliding mode control and the line of sight (LOS) stabilization are used for compensation of the nonlinearities, model uncertainties, friction and disturbances from outside environment. Although our mechanisms are carefully designed with statically balance, the center of the gravity will changed due to the configuration change during moving of the gimbal relative to an aerial vehicle. The disturbance torque from unbalance mass and gimbal geometry is unavoidable under the effect of the vibration of the aerial vehicle, which will lead to degrade the systems accuracy. Since the acceleration of the aerial carrier, due to the disturbance torque, can be measured, a feedforward disturbance rejection can be generated to compensate the disturbance torque. The experimental results confirm the validity of the control design procedure for the two-axis gimbaled stabilization system. The proposed controller is capable enough to overcome the disturbances and the impact of LOS disturbances on the tracking performance.
Design of Setting Management System of Relay Protection to Anti-Grade Trip in Coal Mine Based on Serial Communication
Authors: Li Rui , Song Shu Yong , Ma Zhen Guo , Kou Zi Ming
Published: September 2013

Because of personnel deployment flow, protection equipment and electric device replacement, and enterprise scale expansion, setting management is more difficult. It is easy to be out of control and become the main reason for the anti-grade trip. To solve the anti-grade trip problem of setting mismanagement, this paper designed one setting management system, which is composed of slave controller and upper server. After analysis, the communication process based on the TCP/IP protocols, the communication scheme is chosen between slave controller and upper server. Software within upper server is designed based on database technology. Slave controller gets the setting from relay protection device, by using IEC 60870-5-103 protocols based on serial communication, and sends to the software within the upper server, which can monitor, display and record. Setting management problem was solved, which is caused by the personnel deployment flow, protection equipment replacement, and enterprise scale expansion. This method can be widely used.
ARM Distributed Numerical Control System Design Based on CAN-Bus
Authors: Fei Ji You , Gao Bin , Wen Jing Yan
Published: September 2013

This paper introduces an ARM Distributed Numerical Control System Design Based on CAN-Bus. It analyzed each parts function, hardware circuit and program. The design of interface and the driver of CAN Bus under Linux is the core of this paper. This system combines the distributed control of CAN-Bus with high-speed operation and precision of ARM. Systems resource utilization and real-time has improved. The flexibility and versatility are its advantage.
Characteristics of the Linear Piezoelectric Motor with Semi-Elliptical Stator
Authors: Ho Shine Tzong , Hu Fu Jie
Published: September 2013

A novel design of the semi-elliptical motor based on a double-mode type ultrasonic motor is proposed and analyzed in this paper. Due to the simplification, the semi-elliptical piezoelectric motor can be considered as an improvement of the elliptical piezoelectric motor which we have proposed in the past. The composite structure of the stator in the motor is formed by two multilayer piezoelectric actuators clamped in a semi-elliptical elastic body. In the simulation, finite element modeling of the motor is performed. The geometry of the stator has been computed with the help of the finite element analysis. Then, the dimensions of the stator's structure were determined by making the two resonance frequencies close to each other. In the experiments, the impedance and the displacement response are measured and discussed for understanding the characteristics of the linear piezoelectric motor with a semi-elliptical stator. The motor achieved maximum moving speed of 96 mm/s and the maximum output force of 0.64 N when applying a sine wave of 14Vr driving voltage at 21.2 kHz, while the maximum moving speed of 132 mm/s and the maximum output force of 0.88 N can be achieved if applying two signal driving method of the same voltage.
D-H Parameters and Forward Kinematics Solution for 6D of Surgical Robot
Authors: Farah Edris , Liu Shao Gang
Published: September 2013

Since 1985 when the first appear of robots in surgery field, the interest and the amount of research in surgical robots have been increase significantly. We study in this paper the kinematics of a 6dof surgical robot by determining Denavit-Hartenberg parameters using simple approach supported by robotic toolbox. We describe in details the forward kinematics using the D-H parameters, the successful build of the robot was verified by plotting 3D model for the robot in two positions.
Design and Implementation of the Motor Position Detection System Based on CAN Bus
Authors: Fan Shao Xiong , Cai Yan , Jiang Wen Tao , Wang Chen Hui , Wen Yan Bin
Published: September 2013

The rotor position of switched reluctance motor (SRM) is an essential information, and especially in high-performance SRM drive, it is important to achieve high resolution and real-time position detection. However, opto-coupler and linear encoder cant meet the demand of position detection accuracy. Moreover, if the controller detects the position directly, it is difficult to achieve a controller for remote control of the position detecting because of interference. In this paper, a novel position detecting method is proposed. Absolute encoder is used to achieve high resolution rotor position signal. MCU collects position signal from encoder, and The position information is transmitted to the master controller DSP via the Controller Area Network (CAN) bus. The experimental results show that the position detecting method meet the requirement of high-precision and real-time function of high-performance SRM drive.
Experimental Study on Energy Gain of the Solar Collector with Automatic Inclining System in Conditions of Central Europe during Low Solar Potential Periods
Authors: Rimár Miroslav , Čorný Ivan , Fedák Marcel , Kuna Štefan
Published: September 2013

The paper presents study on energy gain increase of the solar collectors equipped with automatic system which serves for the purpose of changing inclination of the collectors according to the sun ecliptic. The system effectiveness is compared with fixed collectors energy gain.
Fuzzy Decision Method for Selecting Civil Servants
Authors: Rao Cong Jun
Published: September 2013

The civil service system in our country has been implemented for many years, but the recruitment of civil servants has been controversial. In this paper, we determine the written test scores, scope of knowledge, comprehensive ability, strain capacity and the ability of expression as five evaluation attributes, and then we present a decision method for selecting civil servants based on fuzzy mathematical theory and multi-objective decision-making fuzzy optimization method. This decision method gives a scientific and practical way to select civil servants.
Research on Comprehensive Post-Evaluation of Electric Transmission Project Based on Fuzzy AHP Analysis Method
Authors: Zheng Li Xin
Published: September 2013

Post-evaluation of power transmission project will help improve the scientific management level of the construction implementation and operation process, the investment decision-making and returns, and ensure the safe operation of power grid. Based on the theories and methods to establish the evaluation index, considering the low-carbon economy requirements on power grid construction, this article established a post-evaluation index system from the perspective of implementation process, effectiveness and efficiency, social and environmental impact, and sustainable development. According to the content of post-evaluation of power transmission project, it built a fuzzy AHP comprehensive post-evaluation model and took power transmission project as an example to analyze the application of the model.
Trajectory Optimization Method for Follow-Up Control of Concrete Pump Truck
Authors: Huang Da Wei , Liu Bai Yan , Zhang Ru Wei
Published: September 2013

The follow-up control of concrete pump truck is in order to solve the problem that whole boom follows the movement of boom end under the artificial traction. Focus on real-time detection of boom end azimuth change and inverse kinematic problems of redundant boom system, two-axis gravitational accelerometer is used to detect azimuthal variation of boom end, and the best motion trajectory of boom is determined by solving constrained nonlinear optimization function which takes minimum displacement distance of barycentre for the whole boom as the optimization goal. At last, relative azimuth and translation of boom end, rotation of boom are solved together to make translation and rotation of boom being synchronization. In this way to ensure whole boom follows the artificial traction in theory. In order to verify the discussion above, matlab is used to simulate several different working conditions for the follow-up control of boom.
Walking of a Delta Robot in Image Space
Authors: Boonhaijaroen Narit , Chancharoen Ratchatin
Published: September 2013

The Delta robot with the custom built eye in hand CMOS camera is successfully controlled to walk along a PCB trace that is visually feedback. The trace, that is used to demonstrate the performance of the system, contains not only smooth but also right angle paths. However, the overall working accuracy is still within two and a half millimeters as the probe is staying on the trace all the way. The elliptic convolution scanning is proposed to determine the walking direction from an acquired image. The major and minor axes of the elliptic mask are designed to fit the walking direction and the width of the trace respectively. In this way, the elliptic mask, that is best sit on the trace in image space, indicates the direction the robot should walk. The custom built vision system acquires and processes image at 30 fps. The walking command is then sent via TCP/UDP to the Delta robots controller which is run at a much higher servo rate (2000 Hz). The probe unit is designed and built to verify the working accuracy of the proposed system.
Improved Design of Fragment Dispersion of Forward-Firing Warhead
Authors: Shi Zhi Bin , Gao Min , Han Lu Jie
Published: September 2013

Because a uniform fragments field is needed for forward-firing warhead intercepting air targets, it is necessary to analyze quantitatively and improve fragments dispersion uniformity. The wave controller is added in the warhead to make fragments at marginal zone close to the dispersion center. The static explosion experiments are performed to obtain the fragments dispersion data before and after the warhead being improved. The results of data analysis indicate that the marginal fragments will close to the center after adding a suitable wave controller in the warhead. And at the same time the field density of fragments in the centre zone changes little. The fragments radial dispersion uniformity is much better than before. The effective fragments area is about 1.8 times larger than before, and the fragments quantity in effective fragments area increases 54.2%. But about 30% of total fragments are still not used effectively because of the sparse density, and the problem needs to be researched farther in the future.
The Stability and the Computed Speed of the Boundary Element Numerical Method for Electric Potential Generated by Oblique Hundred - Needle Electrodes
Authors: Zhang Ming Chang , Wang An Ling , Liu Fu Ping
Published: September 2013

Abstract:According to the electric potential of oblique hundred -needle electrodes (OHNE), the discrete equations based on the indetermination linear current density were established by the boundary element integral equations (BEIE) The non-uniform distribution of the current flowing from hundred -needle electrodes was imaged by solving a set of linear equations. Then, the electric potential generated by OHNE at any point can be determined through the boundary element method (BEM). The time of program running and stability of computing method are examined by an example. It demonstrates that the algorithm possesses a quick speed and the steady computed results. It means that this method has an important referenced significance for computing the potential generated by OHNE, which is a fast, effective and accurate computing method.
Seal Analysis and Optimization of Large Diameter Gate Valve Based on ANSYS
Authors: Li Shu Xun , Li Lian Cui , Hou Ying Zhe
Published: September 2013

Aiming at the leakage problem on the top of gate valve, the finite element method is used to analyze the gate valves seal face and body, as well as the distributing laws of the stress, deformation and seal pressure are obtained. The shutter is simplified as the circular plate simply supported on the whole circle, and the gate valve is optimized according to the relevant formula to meet sealing requirement. The results show that: the combination of the numerical simulation and theoretical calculation, not only the more accurate theoretical basis for the optimization of the large diameter gate valve can be provided, but also the time of the development and design can be shorten greatly.
Static Analysis of Double-Edged Rock-Breaking Hob Based on Finite Element
Authors: Zhu Chun Xia , Liu Wen Wen , Wang Wei , Zhu Li Da
Published: September 2013

Double-edged hob is commonly used as a tunneling tool when the shield machine works and it is easy to failure due to its insufficient strength in the rock breaking process. In order to solve this problem, the paper used the theory of finite element to do static simulation analysis of the hob. Firstly, the paper generated a three-dimensional model by using the software Pro/E based on a constant cross section double-edged cutter. Then, the maximum stress, maximum strain and their distributions on the double-edged hob could be obtained from static analysis based on the finite element analysis software ABAQUS. Finally, we could get the conclusion that double-edged hob met strength requirements in the test load conditions by comparing the maximum stress and yield strength of hob material. The results of static simulation analysis provided reference to material selection and optimization design of the double-edged hob and cutter head.
Modeling and Workplace Analysis of 3T Cable-Driven Parallel Manipulator
Authors: Guan Li Wen , Mu Cheng Long , Hu Yu Jian
Published: September 2013

This paper analyzes the dynamic modeling and workplace of the 3T cable-driven parallel manipulator. The mechanism utilizes four cables to driven. Firstly, the kinematics equations and the inverse dynamics model were set up for the analysis. And then, pseudo-drag is a serious problem in cable-driven parallel manipulator, this paper give a method to find the workplace under the condition of pseudo-drag. Finally, through numerical simulation, the workplace of the mechanism satisfying the demand is presented by comprehensive analysis.
Manufacturing Technology Study on Non-Backlash Double-Roller Enveloping Hourglass Worm
Authors: Wang Jin Ge , He Rong , Deng Xing Qiao , Ren Le Xing
Published: September 2013

The processing of worm gear components is quite simple, and manufacturing method is relatively complete, theres no need to make special equipment. But to new energy equipment, research new-type of manufacturing technology is required. On the basis of meshing theory and drawing on manufacture of the planar enveloping as well as the tapper enveloping hourglass worm, a research of manufacture technique about the non-backlash double-roller enveloping hourglass worm drive has conducted on the Y3180E gear-hobbing machines and four-axis four-linkage NC machines. The key pieces have been processed out, and a calibration has been conducted on the single-head worm. All of these work will provid a theoretical foundation and practical experience for the actual manufacture.
Fault Diagnosis Method of Gear Based on Local Mean Decomposition and Least Squares Support Vector Machine
Authors: Wan Zhou , Liao Xing Zhi , Xiong Xin , Li Zhi Rong
Published: September 2013

For differences of time-domain energy distribution of different gear fault vibration signal, an analytical method based on local mean decomposition (LMD) and least squares support vector machine (LS-SVM) is proposed to apply to gear fault diagnosis. First vibrational signal of gear is decomposed into a series of product functions (PF) by LMD method. Then extracting energy characteristic parameters of PF components which contain main fault information to constitute a fault feature vectors, which is considered as input sample of well-trained LS-SVM, and then identifying working state and fault type of different gear can be identified accurately and effectively by diagnostic method based on LMD and LS-SVM.
Engine-Generator's Optimized Control Strategy for Electric Drive Armored Vehicle
Authors: Xiang Yu , Ma Xiao Jun , Su Jian Qiang , Liu Chun Guang , Ji Xiang Pu
Published: September 2013

By analyzing the enginegenerator units (EGU) work characteristics of electric drive armored vehicles, engine is controlled running along the optimum fuel curve. Voltage regulation of DC side and generator working condition are optimized through designing voltage space vector PWM (SVPWM) rectifier control system. Adopting rule-based method to solve the nonlinear problem during multi-power source coordination output, developed the multi-power source coordination output control strategy, satisfied the load power needs and the working state of the EGU is optimized.
Roller Bearings and Analytical Expression of Selected Cutting Tools Durability in Machining Process of Steel 80MoCrV4016
Authors: Panda Anton , Duplák Ján , Jurko Jozef , Pandová Iveta
Published: September 2013

Technical science defines a lot of different factors, that they may be cause of shorter cutting tool lifetime. For increase of cutting tool durability is necessary maximally possible elimination of these factors. Determination of cutting tool durability is very important, because provides comprehensive information how to determine appropriate technological conditions for selected cutting tool. The analytical expression of dependence represents very important part of experiments, because all tested processes can be described and defined by formula. These instructions, how to proceed in experiments are obtained in standard ISO 3685. Very important and often used standard ISO in engineering practice is standard ISO 3685. The main part of this standard is T-vc dependence for cutting materials. In standard ISO 3685 are included cutting materials made of high speed steel, sintered carbide and cutting ceramic. The article describes process how to define and to analytically express T-vc dependence for cutting tools made of ceramic in machining process of steel 80MoCrV4016.
Research on One-Shot Process of Hot Extrusion Forming Technology for Aluminum Alloy Drill Pipe
Authors: Mao Jian She , Sun You Hong , Liu Bao Chang
Published: September 2013

Aluminum alloy drill pipe used in deep drilling has great potential and broad field of application. Unlike steel drill pipe production method, aluminum alloy drill pipe is manufactured using forward extrusion in the horizontal hydraulic extrusion press to extrud internal/external upset ends with variable cross-section, and form an assembly line to produce aluminum alloy drill pipe. In this experiment, using 55MN double-action extrusion press on 7075 aluminum alloy tubing to get variable cross-section on one-shot, the extruded pipe body are in good surface quality wihtout cracks, laying the foundation for the forming technology of variable cross-section of aluminum alloy drill pipe.
Research about Jet Flow Mechanism and Flow Field Analysis for Layered Composite Materials
Authors: Yao Y.Y. , Zhou Rong Ya , Zhao Li Ping
Published: September 2013

Layered carbon fiber composite performing microstructure was a part of multi-layer porous piping dielectric structure. At first a jet mechanism was put forward and researched for layered composite materials. The Z reinforcing fibers puncture was put to the layered composite structures. By the CFD simulation analysis, the feasibility of jet puncture was verified, the interlayer strength of the connection was increased and the Z bunch to the carbon fiber was eliminated, which laid theoretical foundation by enhancing the layered carbon fiber composite perform quality.
Boundary Element Numerical Method for Electric Potential Generated by Eleven-Needle Electrodes in Vacuum
Authors: Liu Fu Ping , Wang An Ling
Published: September 2013

Abstract. According to the electric potential on the eleven -needle electrodes in vacuum, the discrete equations based on the indeterminate linear charge density (LCD) are established by the boundary element integral equations. The non-uniform distributions of LCD on the needle electrodes are calculated through solving a set of linear equations. With the help of the LCD, the potential generated by the multi-needle electrodes at any point in vacuum have been obtained. In this paper we have realized the numerical calculation of the static field distributions for multi-needle electrode system by the boundary element approach.
Autothermal Reforming of Ethanol for Hydrogen Production: Steady State Modeling
Authors: Wutthithanyawat Chananchai , Srisiriwat Nawadee
Published: September 2013

As increasing hydrogen demand for fuel cell application is expected in the near future, the efficient production of hydrogen is vital enabling technology for commercialization of fuel cell for residences and automobiles. Among different technologies of hydrogen production, autothermal reforming is considered to be thermally self-sustaining that the external heat source is not required. In this work, a steady state modeling of autothermal reforming of ethanol for hydrogen production has been performed. Because the operating condition at adiabatic temperature is designed for autothermal reformer, the estimated function of adiabatic temperature as function of steam-to-carbon (S:C) and air-to-carbon (A:C) molar ratios can be determined. At autothermal condition, the effect of S:C and A:C ratios on the product distributions of hydrogen rich stream is thermodynamically investigated. At fixed reactor pressure of 1 bar and preheat temperature of 200 °C, the favorable operating condition for the autothermal reforming of ethanol is found to be a S:C ratio of 2.0 and an A:C ratio of 1.75 at adiabatic temperature of 639 °C.
Research on Generation Coal-Saving Effect of the Tiered Pricing of Residential Electricity under Different Power Generation Structures
Authors: Zhang Hui Juan , Tan Zhong Fu , Xu Hui
Published: September 2013

Tiered pricing of household electricity is a new price measure using economic leverage to encourage energy conservation and emission reduction in electric power industry. Based on demand side response theory, the coal-saving optimization model of tiered pricing was established and the coal-saving effect under different structure of coal-fired units was studied. The results of case study indicate that the economic leverage role of tiered pricing will promote the clean energy power generation connecting to the grid effectively, and the coal-saving effect of tiered pricing in the areas with high comprehensive coal consumption rate of power generation will be more remarkable.
A TOPSIS-Based Multi-Criteria Approach to Faculty Recruitment: A Case Study
Authors: Behera D.K. , Sarkar Asis
Published: September 2013

Selection of qualified faculty is a key success factor for any university. The aim of this paper is to support adequately the decision making process for those connected with the faculty selection process. The steps of fuzzy TOPSIS technique are considered, incorporating a new concept for the ranking of the alternative candidates. The candidates are judged on the following criterias such as strategy formulation/strategic decision making capability, change management /change adaptability, communication/interpersonal skill, leadership, risk/crisis management, knowledge of software/software tools , professional experience , and educational background. Five candidates with different skills are taken for the judgment of their fate. They were asked to answer a set of questionnaires made by the experts and after that they were evaluated by the experts board. The real life application on the selection of any executive member/post shows the practical utility of this method.
Design and Implementation of Voice Control System in Flexible Manufacturing Cell
Authors: Li Jing , Xu Ting , Shen Nan Yan
Published: September 2013

On the voice development platform of Microsoft Speech SDK, speech recognition and speech synthesis modules based on command control mode is built in this paper. Ethernet-based remote voice control system of intelligent flexible manufacturing cell is developed for machine tools and industrial robots. This paper designs an intelligent voice control system based on LabVIEW development environment, which realizes the human-machine voice interaction of flexible manufacturing cell and remote voice control. Experimental studies have shown that intelligent voice control system has high speech recognition rate and system reliability in a relatively quiet environment.
An Optimization Method for Geometric Error of Machine Tool Based on NSGA-II
Authors: Cai Li Gang , Zhang Cui , Cheng Qiang , Gu Pei Hua , Wang Hong Ying
Published: September 2013

Balancing the cost and processing precision of machine tool by the method of error allocation without affecting the machining performances is a critical problem in the Machine tool industry. In this paper, a new accuracy allocation method for multi-axis machine tool based on Multi-body system theory, manufacturing and quality loss costs and relationship between tolerances and accuracy parameters of components is proposed. This optimization method is performed with Non-Dominated Sorting Genetic Algorithm II algorithm using Isight and Matlab software. A three-axis vertical machine tool is taken as an example to demonstrate the method, and the optimization results show that the accuracy allocation method proposed is feasible in the optimization of geometric errors on the premise of satisfying machining accuracy requirements.