bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Bi-Directional Grid-Connected Inverter Based on PI Regulator and Compensation Control
Authors: Che Yan Bo , Ren Jing Ding
Published: April 2011

This paper establishes current control model of grid-connected inverter in synchronous rotating frame. Based on the model, a new control strategy which is combined with PI regulation, decoupling, and feed-forward compensation is proposed. Software algorithms are designed in this paper. Based on TMS320LF2407A and IPM Module PM50RLA12, experimental platform for grid-connected inverter is built. Experimental waveforms are given in the paper.
MPPT Control and Simulation of PV Power Systems
Authors: Che Yan Bo , Liu Bin
Published: April 2011

Maximum Power Point Tracking (MPPT) is an important means to improve efficiency of PV power systems. The simulation model achieving MPPT of independence PV power system, BOOST circuit as the core, is established. The model can simulate the implementation of PV arrays and MPPT without exact characteristics and parameters of the internal circuit. The simulation results show that the closed-loop system can track the maximum power point of PV and work stably in the maximum power point. It can fast track to the corresponding maximum power point in the case of environment changes. The requirements of steady and accurate of auto follower system are achieved.
A Rails-Framework-Based Information System Study of Auto Leasehold Management
Authors: Wang Feng Ling , Zhang Yuan Yi , Yang Xiang
Published: April 2011

With the increasingly wide range applications of Web and the continue development of Web development technology, developers urgently need a framework to simplify the development process, reduce development effort and improve development efficiency. Rails is a Web framework which is more realistic and more efficient, it has the advantages of rapid development system of PHP and the advantages of structured programs of Java. So this paper analyzed the architecture of Rails framework in-depth, and designed an information system of auto leasehold management with the characteristics of Rails framework. The system realized unified and real-time management for the branches, the network traffic, orders and settlement data. The validity and efficiency of the system was validated via test-experiment. The results show that the system can enhance the standardized management of car rental, improve the management level and the information degree of the cars rental industry. At the same time, it can also increase the crackdown of car rental fraud, establish safe and effective prevention mechanisms, and reduce the loss of car rental.
Aircraft Health Diagnosis Method Based on ARMA Model and Probabilistic Neural Network
Authors: Cui Jian Guo , Song Bo Han , Dong Shi Liang , Liu Hai Gang , Zhao Qing
Published: April 2011

In order to diagnose the health state of Aircraft effectively, a new method based on ARMA Model and probabilistic neural network(PNN) is proposed in this paper. First, an ARMA model is built using the original acoustic emission signal of aircraft crucial components, then use the autoregressive approximation theory to estimate model parameters, and order of the model is calculated according to Akaike Information Criterion(AIC). Use the autoregressive parameters to build feature vectors, then the probabilistic neural network is used to carry out the recognition of these feature vectors, and the health state of aircraft crucial components is effectively diagnosed. After the application on certain type of real aircraft, this method is proved to be capable of detecting the fatigue crack on crucial structural components. And we can conclude that the method is an effective way to carry out aircraft health diagnosis.
An Accurate Localization Method for Video Sensor Network Nodes
Authors: Gao Jun Xiang , Tian Yan
Published: April 2011

Localization of the sensor nodes is a major obstacle for practical applications of video sensor networks. This paper present a novel localization technique based on vision in wireless sensor networks. On the assumption that sensor nodes can be recognized in an image, a sensor node firstly direct its Field-of-View (FoV) to an anchor or localized node, then we can get the orientation of anchor node relate to the sensor node to be localized. If two or more anchors can be found in sensing area, a series of equations will be obtained. They can be solved using minimum mean square error rule, and the solution of the overdetermined equations mentioned above is the estimation of the node position. The experiments indicate that a promising performance can be achieved in determining the exact node location using a small number of anchors.
Research on Working Vacations Strategy of WLAN MAC Layer
Authors: Chen Hai Yan , Shi Wen Bo , Yang Ming Fei
Published: April 2011

In this paper, we analyze the DCF and PCF schemes, and study some conventional MAC algorithms. For the purpose of satisfying requirements of data transmission in integrated services, a new MAC algorithm based on working vacations is proposed in the paper. Using the continuous system simulation strategy, we design the simulation experiment of MAC algorithm. Combining queuing theory, the steady performance parameters of queuing model is obtained. The results show that the algorithm based on working vacations has an advantage over single PCF or DCF scheme in some indices such as mean queue length, mean delay time and system throughput.
Preventive Security Mechanism Based on AODV
Authors: Tuan Chiu Ching , Chen Kuen Yang , Wu Yi Chao
Published: April 2011

In a mobile ad-hoc network, MANET, designing a security routing protocol is an important issue since the mobile nodes and wireless medium are prone to be attacked. However, most of wireless routing protocols concentrated on how to reduce the data transmission time and energy consumption. Wireless routing paths in MANET may be broken or fabricated by attacking. Hence, sending data packets to the destination may failure. For defending the active black hole attacks and the passive fabricated routing attacks, we proposed a preventive security mechanism based on ad-hoc on-demand distance vector routing (AODV), called PSM-AODV. PSM-AODV modified some field in RREQ, RREP, and RERR packets based on AODV. PSM-AODV thus may defend the possible black hole and fabricated routing attacks. Simulation results showed that PSM-AODV could promote the packet delivery rate based on little overhead in control packets.
Research and Implementation of the MES System in the Cold-Rolled Plant Based on ERP
Authors: Zhang Kai Bi , Ren Xiao Jin
Published: April 2011

In the article, functional requirements need to be analyzed for Chongqing four manufacturing execution systems in cold-rolled steel production line. Combined with the idea of design of the system it can be proposed overall design of information systems and network topologies. Meanwhile, it can also be designed technology and production performance modules based the ERP system platform. Focus on design the production performance of functional modules and interface combined with 1450 actual production process. Production data to be collected need to be establishing the simulation model of the node .Do achieve the simulation of the actual production process. Meantime, the simulation data will be collected to the production performance module through the interface with the real-time database. Chongqing four steel companies as state Enterprises, it should be attached great importance to enterprise information. It has not basically realized the bottom of the production process control system, but also the initial establishment of the upper information management system. However, the underlying automation system and upper management information systems are not integrated. This situation seriously affects the application of effective information systems. The method can only deal with the current manual operations, which leads to the following series of questions: the basis of the data delay line failure; Based data acquisition product line transmission efficiency is low and error rate is high; Production site data scattered in many different processes link manually using the original production data acquisition and transmission are difficult to track products from production through to finished off the assembly line of the whole process; Top manufacturing information system based on production data can not directly access to hard to complete implementation of its functions. In response to these problems, Chongqing four steel companies build MES system, marketing integration, the information management systems and process control systems integration as a whole, and thus the implementation of ERP systems and decision support systems, and further enhance their core competitiveness.[1,7]
The Optimization and Application of the Neural Network Together with Intelligence Methods
Authors: Xu Shao Hua , Pan Hao
Published: April 2011

It needs a mass of data to correctly reflect a good many of complex factors and the performance of cement in the process of hydrating, researches of home and abroad are focus on data forecast by experiments and the Neural Network. The intelligent algorithm combined the Particles Algorithm and the Neural Network is used in this paper. The intelligent algorithm is applied in the process of the cement hydrating to forecast the relationship between the particle size distribution of coal gangue and expansible degree of cement.
Robustness Analysis of QIM Watermarking against Additional Noise
Authors: Zeng Gao Rong , Liu Jian Ming , Jiang Ai Wen
Published: April 2011

A mutual information function was defined as a criterion measuring the robustness of watermarking algorithm. Considering QIM scheme, error probability of watermarking can be calculated to validate the measurement of mutual information function. By mean of numerical computation, mutual information under Gaussian noise and uniform noise is calculated with change of noise standard deviation. In the experiment, an audio section is selected as the host and their third lever wavelet detail coefficients are quantified according to watermark bit series. Experiment results show that statistic Bit Error Rate (BER) is matched with evaluation conclusion of mutual information method when step is on the small side. Mutual information function can be selected as a cost function to evaluate the robustness of watermarking algorithm, and predict the BER.
A De-Noising Method of Acceleration Signal for Vehicle Based on Kalman Filter and Average Filter
Authors: Zhang Chen , Xu Chang Yong
Published: April 2011

A de-noising method is proposed for 3DM-GX1 accelerometer signal based on kalman filter and average filter. This method can reduce the disturbance caused by vibration of vehicle motion and sensor itself, get acceleration accurately, and have advantages of easy realization and good real-time performance. A vehicle acceleration signal model is established with real acceleration noises as simulation signals based on kalman filter and average filter. Experiments based on real vehicle acceleration signal showed that the method could reflect the detailed information effectively by filtering noise, and it is very suitable for de-noising of vehicle acceleration signals which needs real-time application. The start, stop, advance and retreat action could be identify from the acceleration signal by using the proposed de-noising method based on kalman filter and average filter.
Enterprise Synergy Innovate Mechanism Based on Dynamic Core Competence
Authors: Wang Xiao Guang , Guo Hu Bin , Zhao Xiang Xiang
Published: April 2011

In this paper, using the ability as the basic elements of the analysis unit, discuss the enterprise which has continued to grow on the internal rules of building a sustained business growth, generate the theoretical framework of the mechanism and expand the capacity of traditional business theory. Based on the synergy innovation, enterprise dynamic core competencies to achieve. the enterprise system is a the network of dynamic core capacity in all core business of the assembly, which is the core of the system of co-innovation capability, the ability to synergy innovate is a enterprise dynamic core competencies. The existence and evolution of the most basic function of dynamic capacity network to form the core of the most important enterprise growth mechanism.
Tamper Detection and Self-Recovery Watermarking Scheme Based on DWT-SVD
Authors: Hu Yu Ping , Zhang Jun , Yin Hua , Liu Yi Chun , Liang Ying Hong
Published: April 2011

This paper studied the image tamper detection and recovery watermarking scheme based on the discrete wavelet transformation(DWT) and the singular value decomposition (SVD).By the property of DWT and SVD , we design two watermarks which are embedded into the high-frequency bands of the DWT domain.One watermark is from the U component of the SVD domain and used for detecting the intentional content modification and indicating the modified location, and another watermark is from the low-frequency of DWT and used for recovering the image. The watermark generation and watermark embedding are disposed in the image itself. The experimental results show that the proposed scheme can resist the mild modifications of digital image and be able to detect and recovery the malicious modifications precisely.
Design of the Adaptive Filter Based Mind Evolutionary Computation
Authors: Liu Qing Song , Tong Jia
Published: April 2011

This paper describes the basic idea of Mind Evolutionary Computation and its advantages, the basic steps of the algorithm .The optimal adaptive filters are design based on MEC, which don’t need any priori statistical knowledge of signal and noise, and the parameters of adaptive filters can be automatically adjusted to the best in accordance with certain criteria. Simulation results show that the proposed method can quickly design effective optimal adaptive filters.
Fuzzy Self-Adaptive PID and Realization in Electric Heating Furnace System
Authors: Wang Sue
Published: April 2011

This paper introduces the idea of fuzzy self-adaptive PID algorithm. In order to compare the control effects of traditional PID, fuzzy control and fuzzy self-adaptive PID algorithm, simulation was carried out .The results show that the fuzzy self-adaptive PID controller has the characteristics of fast response time, less overshoot and small steady-state error and has extremely high interference rejection capacity. The software of SCM (Single-Chip Microcomputer) realizes the algorithm. The controller is applied to electric heating furnace temperature control system and the practical application shows that the controller achieves a satisfied control effect.
Analysis of Types and Selection of Ecological-Type Revetment in Town's River Channel Construction
Authors: Wang Ying Hua , Wang Hai Xing
Published: April 2011

There are many kinds of Ecological-type revetment, including types of Natural vegetation, Masonry, Eco-Concrete and so on. What is more, the engineering characteristics, economic cost, suitable condition of application are all different. Therefore we should choose appropriate types of ecological-type revetment in the construction of river channel for small cities and towns. This article includes the overview of the progress of ecological-type revetment rectification measures, the types and characteristics of ecological-type revetment. Selection principles of economics, security, aesthetics as well as the consideration of the idea of harmonious coexistence between man and water in ecological-type revetment construction are proposed.
Movement Modeling and Testing of a Novel Trans-Scale Precision Positioning Stage Based on the Stick-Slip Effect
Authors: Zhong Bo Wen , Chen Li Guo , Wang Zhen Hua , Sun Li Ning
Published: April 2011

A novel trans-scale precision positioning stage based on the stick-slip effect was developed. Combining with LuGre friction model, the flexible movement model of the stick-slip driving was established and simulated in Simulink software. Simulation analysis got the displacement and speed curve of slider and the net displacement of each step was calculated. The movement of slider lags behind the PZT actuator. The testing prototype of the stage driving by stick-slip effect was designed and the movement parameters of forward and reverse direction was tested, the results of movement model and simulation was verified by the testing datas. The problem of the difference of forward and reverse movement was proposed.
A Novel Optimization Scheme Based on QoS in Wireless Networks
Authors: Ling Yu Tao , Yi Ben Shun , Wu Jian Bin
Published: April 2011

There has been explosive demand for supporting multi-class traffic, especially bandwidth-intensive multimedia traffic in wireless networks. The ability to manage bandwidth to cope with wireless network resource fluctuations is becoming increasingly important. In this paper, we propose an efficient Call Admission Control (CAC) scheme that relies on adaptive and dynamic resource reservation strategy for multi-class service wireless networks. Extensive simulation experiments have been conducted to evaluate the performance of the proposed scheme. Results show that our proposed adaptive scheme is effective in guaranteeing QoS requirements by keeping the call blocking and handoff dropping probabilities substantially low.
Effect of Static Magnetic Field on 2024 Aluminum Alloy Solidification Behavior
Authors: Cheng Chang Gui , Yu Le , Wan Wen Cheng , Liu Zhong Tian , Jin Yan
Published: April 2011

With the methods of macrostructure observation and temperature measurement, the paper has studied the influence rules of static magnetic field on 2024 aluminum alloy solidification structure and solidification rate. The conclusions can be concluded as follows: the static magnetic field can inhibit the growth of columnar crystals and promote the growth of equiaxed crystals; when the magnetic flux density is increased, the grain refining effect is better, the solidification rate of 2024 aluminum alloy increases remarkably, and the full solidification time is shorter; the reasons of grain refinement may be that the thermo-electromagnetic convection effect related to Peltier effect is stronger than electromagnetic braking effect, which can enhance the heat transfer and fluid flow in the solidification front, and that undercooling temperature is enlarged.
Research on Enterprise Application Integration Based on Service Oriented and Workflow
Authors: Yang Guo Jun , Zheng Ying
Published: April 2011

Aiming at the disadvantages like the enterprise application system scalability, integration and interoperability is not strong, neglecting the business process integration, the integration platform lacks flexibility and adaptability, based on service oriented and workflow technology system, Service-oriented and for integration of foundation, enterprise application integration system solutions were proposed. To realize loosely coupled, business process integration, high integration and interoperability strong application integration system we need discuss enterprise application integration the architecture and hierarchical model.
Utility-Based Optimal Multi-Flow Rate Allocation for Concurrent Multipath Transport among Cooperative Terminals
Authors: Hu Zheng , Miao Jie , Wang Can Ru
Published: April 2011

Along with the rapid progress of heterogeneous networks, multiple user terminals can cooperate via local or short networks as a integrate group to communicate via diverse wide area networks in parallel. This brings forth Concurrent Multipath Transport challenge where the multi flow rate allocation is the key issue. A utility-based model to form a strategy of rate allocation is proposed, in which the user’s QoS demands can be described with user utility function. Moreover, a distributed multi flow rate allocation algorithm that converges to the Pareto optimal is developed. The simulation result demonstrates that the proposed algorithm is efficient to allocate rate for cooperative terminals group in heterogeneous networks.
The Feasibility Study on Structural Insulated Panels in Rural Settlements of LuGu Lake
Authors: Wang Li Li , Yang Zheng
Published: April 2011

Rural settlements of LuGuLake in Yunnan province have an original architectural characteristics —Wooden houses which are shaped by the climate and topographic conditions, local materials, and the social living style. But because of the typical well-dry type construction of the wooden houses which need more massive lumbers to be constructed, it leads to the disappearance of the luxuriant forest. The other building materials such as tamped earth, bricks and stones, reinforce concrete replace the wood materials. The research’s goal is to solve the ecology problem which was brought by wood rooms built by lumbers and the compatible problem between the new houses built by modern materials and vernacular architecture in LuGu Lake.
Principles of Sustainable Construction Project Management Based on Lean Construction
Authors: Zhong Zhen Yu , Chen Yong Gao
Published: April 2011

Researchers and construction professionals have adopted lean manufacturing concepts and strategies in the development of lean construction principles. Much research is in progress to develop lean concepts and principles for better implementation. Sustainable development concepts present featuring social, ecological, cultural and environmental facets. There are some similarities in aspects of the principles of lean construction and sustainable construction. The theory of lean construction system plays a role in the process of achieving sustainable development objectives. This paper presents an analysis of the role of lean construction in the sustainable development， analyzes the sustainable construction task management, flow management and the value management under the lean construction system.
Ontology Design in Visual Stock Information System
Authors: Song Hua Zhu , Khamis Khamis Abdul Latif , Song Xuan Zhu
Published: April 2011

The technology of visualization should be merged with semantic technology for abstracting and describing information from the processed DataStream, transaction data and high dimension data in the stock market. This paper proposed the ontology design in visual Stock Information System (VSIS) which combined domain information with function requirements. Firstly, use case diagram and ontology design principles of VSIS were given. Then, according to different information sources and learning theory, learning procedure, validation procedure and their interactions comprised the ontology learning cycle, whose result is VSIS top ontology pools. Next, the ontology in VSIS was defined, whose top ontology covered stock ontology, agent ontology, enquire ontology, visualization ontology, interface ontology, DB operation ontology and error processing ontology. Finally, the defined ontology was validated by Protégé.
A Semantical Approach for Automatically Transforming Software Requirement Specification into Formal Presentation
Authors: Chen Shu , Chen Ming Kai
Published: April 2011

Software engineering is a critical step in obtaining high quality production. However, requirement specifications that written in natural language is inevitably has ambiguity. Modern driven architecture makes use of requirement model for the complement of requirement specification to eliminate such ambiguity. However, currently, the transformation from requirement specification into formal model only limited in syntax level, thus lack of correctness and precision. This paper proposed an approach in semantical level to process textual specifications of the requirements of unlimited natural language and their automatic mapping to the formal presentation.
Design on Reputation Mechanism for the Medical Consumables Suppliers Based on Fuzzy Clustering
Authors: Shi Lu , Ma Xin
Published: April 2011

Trust problem of medical consumables supply chain has been increasingly a focus of people’s attention. Business competition based on reputation management becomes the new strategy for business development in medical consumables supply chain. The reputation relationships among entities are dynamic. The medical consumables supply reputation management involves many different elements: the collaboration among entities, collection of the information to assess the reputation, and the standards for reputation assessment. The design factors are found for consideration of medical consumables supply reputation evaluation and the reputation mechanism is designed on the basis of fuzzy clustering.
A Robust Grayscale Watermarking Algorithm
Authors: Liu Feng , Bai Jian Yu , Sun Lin Jun
Published: April 2011

In this paper, a novel robust grayscale watermarking algorithm based on Two-Levels DCT and SVD is proposed. The watermark signal is (32× 32 × 8) bit gray image. First, the original image is divided into blocks according to the size of the watermark; each block corresponds to each pixel value of watermark. Second, the DCT is applied in each block twice and form new blocks. Then, Get the largest value of each new block to form a new matrix .Apply SVD on the new matrix to get matrices U, S and V for each block. The pixel value of watermark is embedded into the S matrix of the new matrix. And the watermark can be detected with the original image. The experimental results show that the algorithm can satisfy the transparence and robustness of the watermarking system very well. Experimental evaluation demonstrates that the proposed scheme is able to withstand a variety of attacks very well.
Study on Heat Integrated Azeotropic Distillation
Authors: Sun Lan Yi , Wang Ru Jun , Zhai Cheng , Li Qing Song
Published: April 2011

In this paper, the design and optimization procedures of a heterogeneous heat integrated azeotropic distillation sequence with side stripper (HIADS-SS) for the purification of isopropanol are investigated. The proposed procedures can detect the optimal values of the design variables and thereby guarantee the minimum energy consumption. The procedures are applied to the study of the separation of azeotropic mixtures using the two distillation sequences. In the HIADS-SS, the top end of the side stripper has both liquid and vapor exchange with the main column, which eliminates a condenser compared with the conventional heterogeneous azeotropic distillation sequence (CHADS). The results show that reductions in energy consumption can be obtained using the HIADS-SS.
Robust Spread Spectrum Steganography Based on the Nonuniform DCT Characteristic
Authors: Chen Wei Chao , Ao Jun , Ma Chun Bo
Published: April 2011

In existing image hiding Spread Spectrum (SS) algorithm a reduction of scaling parameter is employed to improve imperceptibility but may lead to an increase in secret information extraction errors. A robust SS steganography, based on the Nonuniform Discrete Cosine Transform (NDCT) characteristic, is proposed. If the secret information, embedded in the NDCT coefficient matrixes of everyN×Nhost image, is a real symmetric matrix, the difference matrix between stego-image and host image is also a real symmetric matrix. Due to the NDCT characteristic above, based on some corresponding change of stego-image, the proposed robust SS algorithm can improve imperceptibility of stego-image and the scaling parameter was not reduced. Simulation results verify the feasibility and validity of the algorithm.
Multi-information Integrated Method for Text Extraction from Videos
Authors: Jiang Ai Wen , Zeng Gao Rong
Published: April 2011

Video text provides important semantic information in video content analysis. However, video text with complex background has a poor recognition performance for OCR. Most of the previous approaches to extracting overlay text from videos are based on traditional binarization and give little attention on multi-information integration, especially fusing the background information. This paper presents an effective method to precisely extract characters from videos to enable it for OCR with a good recognition performance. The proposed method combines multi-information together including background information, edge information, and character’s spatial information. Experimental results show that it is robust to complex background and various text appearances.
Thermodynamic Analysis of a New Coke Dry Quenching Technology
Authors: Sun Lan Yi , Wu Jun Ting , Xu Jin Chuan , Li Qing Song
Published: April 2011

In this paper, a new coke dry quenching (n-CDQ) technology is proposed. The advantages of this technology are energy conservation, pollution reduction, coke quality improvement and the full use of resources. Based on the idea of the n-CDQ technology, process modeling is conducted using the process simulator of Aspen Plus. The impacts of the flow of the coke-cooling coke oven gas and the consumption of the steam on the new CDQ technology are discussed. The results show that the maximum concentration of CO reaches about 16% and the H2 56% when the steam consumption is approximately 0.5 t/t coke and coke oven gas 150-160 Nm3/t coke. The steam produced is more than the consumed, which means that the excess steam can be used for power generation. In this way, the advantages of the n-CDQ technology are fully revealed.
Research on Automatically Generating Method for Three-Dimension Virtual Model of Buoy Based on S-57 Chart Data
Authors: Yang Shen Hua , Shen Hai Qing , Wang Xing Hua , Yu Wen
Published: April 2011

With appearance of variety kinds of three-dimension buoy application system, the design and production of three-dimension virtual model of buoy is increasingly becoming an important and tedious work. Artificial modeling way adopted in the past is inefficient, and the light quality is difficult to achieve. The paper puts forward automatically generating method for three-dimension virtual model of buoy based on S-57 chart data (AGM for short), and describes extraction and analysis of buoy data from S-57 chart data, automatically generation of three-dimension buoy model and the flashing animation of buoy light quality in detail, and finally gives the experimental data and results.
XACML-Based Fine-Grained Security Policy for Distributed System
Authors: Zhang Ai Juan , Gao Jing Xiang , Ji Cheng
Published: April 2011

Distributed applications often require integrating security policies of collaborating parties. The integration must be able to support complex authorization specifications and the fine-grained resources access requirements that the various parties may have. But now security modeling is not considered as a vital part in software development. In this paper, it is proposed to integrate the design of access control policy into software development. In this paper, UML is used to model access control policy, and then a framework is designed to generate the security model result expressed in XACML and to verify the policy correct and complete.
Introduction to Grasp Knowledge Using the Super Smart Pad
Authors: Ge Qiang , Zheng Feng Bin , Peng Xi Cheng
Published: April 2011

The Dynamic Geometry Softwares (DGS) have brought much excitement into the computer-based teaching community, become more important in mathematics education in many curricula. As one of most remembered DGS, the Supper Smart Pad (SSP) can help many students to learn new knowledge effectively, to grasp knowledge easily. This paper discusses knowledge of dynamic geometry, introduces the free version of SSP in Chinese. It emphasizes on grasp new knowledge used and automatic reasoning in the SSP. It shows applications of the intelligent education software in mathematics teaching in the end. This paper also describes that the SSP is beneficial for instructions, especially for teaching students how to reason with the SSP.
Integrated Management System for Basic Units Resource of Process-Oriented Manufacturing
Authors: Zhu Ke Di , Zhang Xiao Rui
Published: April 2011

As large-scale enterprise management system of advanced industrial countries, ERP and MES encountered some difficulties and confusion in the localization process of china. Basing on the characteristics of Chinese process industry and the practical implementation experience of ERP and MES, the new grass-roots production plan model and production control model and accounting model and assessment model and site quality retrospective model and virtual instrument model and etc. is built. And the management system for process-oriented manufacturing industry in China is designed and developed. It is integrated with Chinese manufacturing process of production site characteristics and will be with better reference value.
A New Approach for Trustworthy Software Development
Authors: Li Zhen , Cai Hong Yun , Tian Jun Feng , Zhang Fang
Published: April 2011

In order to develop the trustworthy software, the paper merges the software trustworthiness into software life cycle and proposes a new approach for trustworthy software development. The software behavior and results can be expected and the behavior states can be monitored during software running by introducing the trustworthy behavior trace of software. In the software design phase, we inserted checkpoint sensor at each checkpoint of trustworthy software; in the software testing phase, we created the trustworthy behavior trace of software and updated it for software update. The experimental results show that the software developed with our approach can detect the anomaly of software successfully and verify the effectiveness of our approach.
Study on the Architecture of the Traffic Accident Management System
Authors: Zhu Yin
Published: April 2011

The traffic accidents should be dealt with as quickly as possible when the traffic accidents have happened in order to prevent the second traffic accidents to happen and reduce their incidences. So this paer presents the architecture of the traffic accident management system based on analyzing the running flow of the traffic accident management and the incident management so that the system development will be more standard, scientific and efficient.Moreover, the paper introduces the architecture chart of the traffic accident management system which combined accident detection, forecast, identifying, decision, and related functions of the related systems.
Measurement for Team Innovation - Comparison for Multi-Sources Appraisal
Authors: Chen Wen Jing , Shi Kan
Published: April 2011

Based on 360-degree feedback evaluation system, the authors tried to find out the answer for “Who" would be the assessor for team innovation. Two questionnaire surveys were carried out to collect the data from four different sources (team members, within-team leader, between-team supervisor and objective data) of 27teams with 169 participants. Data analysis showed that the data from team member is negative related to the objective data while the data from within-team leader are positively related to the objective data. And there is no significant relationship between the appraisal of between-team supervisor and the objective data. The authors analyzed the consistency and determined the weights of different evaluators for team innovation. Implications for future research and pragmatic ramifications for organizational practice are discussed in discussion.
VV Modulation System of Circulating Pump Based on Fuzzy Control
Authors: Wang Xian Juan , Ma Jun Er , Zhu Dong Bi
Published: April 2011

In order to improve the low thermal efficiency of Solar Energy Fission Geyser, a VV modulation control system of circulating pump based on fuzzy control has been designed. In this system, SCM P89LPC930 is the core. A digital temperature sensor of 1-wire bus LTM8871 is used to detect the real-time temperature and an inner comparator of P89LPC930 to detect the zero point. According to fuzzy control rules, a best angle is chosen. This technology is applied to drive the AC motor to get constant temperature differential. The system is effective in improving the thermal efficiency and poor circulation by avoiding frequent start-up of circulation pump. The innovation points lie in the system uses a minimum hardware circuit design and fuzzy control, with easy circuit, reliable performance characteristics, thus having a high application value.
Blind Single-Image Super-Resolution Reconstruction Based on Motion Blur
Authors: Qin Feng Qing , Li Zhong , Zhu Li Hong , You Ying De , Cao Li Lan
Published: April 2011

Blind image super-resolution reconstruction is one of the hot and difficult problem in image processing. a framework of blind single-image super-resolution reconstruction algorithm is proposed. In the low-resolution imaging model, the processes of motion blur, down-sampling, and noise are considered. The parameter of motion blur is estimated through an error-parameter analysis method. Utilizing Wiener filtering image restoration algorithm, an error-parameter curve at different motion distance is generated, from which the motion distance of the motion point spread function (PSF) can be estimated approximately. The super-resolution image is reconstructed through the iterative back projection (IBP) algorithm. The experimental results show that motion PSF estimation plays an important role on the quality of the SR reconstructed image, and also demonstrate the effectiveness of the proposed algorithm.
Numerical Simulation and Optimization on Casting Hoisting Sheave
Authors: Mi Guo Fa , Chen Li Lin , Nan Hong Yan , Wang Hai Yan
Published: April 2011

The design of the casting process was obtained by traditional casting design method. The process was composed of the choice of the casting position and the determination of casting parameters and the design of the gating system. According to the structural characteristics of sheave and quality requirements, the sheave hub and rim were poured separately. In order to achieve progressive solidification, two insulated risers were laid on the top of the wheel, and some risers were placed on the top of the hot spot in the rim and cold iron was introduced near by the thick part of the wheel hub. Three-dimensional model of the casting was generated and the solidification process of the sheave was simulated by View Cast. The results showed that the hot spot areas in the rim and thick part of the wheel hub have frozen finally, and the shrinkage formed in those areas. According to the simulation results and analysis, the casting process program was optimized by increasing the size of riser and the thickness of cold iron. After simulated once again, the defects were transferred to risers. The defects were eliminated to the greatest extent and the progressive solidification was achieved. So the reasonable program of the casting process was obtained.
The Response of Defects Containing Water under Dynamic Loads
Authors: Zhu Zhe Ming
Published: April 2011

A crater blasting model of rock with pre-existing defects under blasting loads is established by using finite difference method. The defects are saturated with water and are randomly distributed. The defects include voids, pores and small open joints. A shock equation of state (EOS), obtained from the existing test results, is employed for the granite near the explosive charge, and for the granite far from the charge, a linear EOS is applied. A modified principal stress failure criterion is applied to determining the granite statuses. The granite dynamic strengths, which increase with strain rate, are calculated from the existing test results. The simulation results show that under blasting, the strength of wet rock is lower than that of dry rock.
Efficient Motion Estimation Algorithms for Video Coding
Authors: Wu Ming Te
Published: April 2011

This work proposes an efficient motion estimation algorithm for video coding. The proposed method calculates the partial distortion by replacing a certain number pixels of each partial sub-macroblock. In addition to increase the probability of the rejection of unsuitable motion vectors without additional computations, the proposed approach reduce computational complexity significantly and obtains better objective quality than conventional motion estimation algorithms.
The Real-Time Control of Space Robot by Computed Torque Control Law
Authors: Shao Bing , Yuan En Tao , Yu Zhong Hai
Published: April 2011

Lie groups and Lie algebras are used to research the dynamics and computed torque law control of free flying space robot systems. First the adjoint transformations and adjoint operators of Lie groups and Lie algebras are discussed. Then the free flying base systems are transformed to fixed base systems. The inverse dynamics and forward dynamics are described with Lie groups and Lie algebras. The computed torque control law is used to simulate with the results of dynamics. The simulation results show that with the method the dynamical simulation problems of space robot can be solved quickly and efficiently. This built the foundation of real-time control based on dynamics. The computed torque control law has good performance.
Research on the Key Points of Best Practice of Software Architecture Design
Authors: Huang Qing
Published: April 2011

Software architecture design is one decision-making process for a series of major issues from software development and the best practices had been summed up. Nevertheless, the strict observance of the best practices still cannot raise the design line from the class development to framework development. The reason was that most imitators are unable to understand accurately the essence of two key words of "iteration" and "divide and rule". Therefore, this paper made further study of the "iteration" and "divide and rule". First, the meaning of "iteration" would be redefined. It is that each cycle should have a respective emphasis and end with the time deadline so as to make a clear distinction among them and improve iterative efficiency. Second, the meaning of "divide and rule" would also be redefined. It is that the passive decomposition based on Test First is better than active decomposition. Because it is the most suitable to have no alternative but to decompose according to current concrete conditions. By this way, best practices of architectural design can be implemented in real project, so as to improve the level of architecture design in essence.
Development of New Patching Materials for Bridge and Tunnel Structures
Authors: Wei Hong , Zhang Su Lei , Zhang Ding Li
Published: April 2011

According to requirements of the mechanical property, durability quality, working performance for patching materials for bridge and tunnel, the new patching material named high-performance tensile composite mortar (HTCM) has been developed. The HTCM is a product of cement-based mortar modified by polymer. The strength test, shrinkage test, chloride resistance test, carbonization resistance test and working performance test for HTCM are introduced in this paper. According to the test results, the components, characteristics, performance and operational principle of HTCM are listed in this paper. At last, the technical characteristics and advantages for HTCM are also discussed in terms of construction feasibility based on construction technology of sprayed mortar. It has been found that the HTCM can be used as an effective patching material for bridge and tunnel.
Structure Optimization and Application of Conical Convergence High-Pressure Jet Nozzle
Authors: Shen Chun Ming , Lin Bo Quan , Meng Fan Wei
Published: April 2011

High pressure jet nozzle is the key technical equipment to determine the cutting performance of coal cutting jet, experimenting of conical convergent nozzles as the research object, based on the orthogonal principle of Taguchi method, to the quality characteristics of nozzle outflow velocity, based on jet factors of cutting performance to select parameters and established nine nozzle models to design orthogonal experiment; by ANSYS finite element analysis software to simulate fluid flowing inside the nozzle and calculate the curves of fluid velocity, and calculated according to the analysis of variance table, determined reduction angle  and nozzle outlet diameter d as two factors of significantly affected outflow velocity, obtained the optimal designed parameters of nozzle; finally, by ANSYS finite element analysis software to verify the results of optimization, the experiment results the same with Taguchi method, the conclusion is great significance for the high-pressure jet cutting coal technology and systems to improve and optimize.
The Effect of Magnetic Field on the Hydration of Nanoscopic Hydrophobic N-Alkane Plates
Authors: Zhang Wei Wei , Li Long Qiu , Zhang Guang Yu , Dong Hui Juan
Published: April 2011

The effect of an external magnetic field on the hydration behavior of nanoscopic n-octane plates has been extensively investigated using molecular dynamics simulation in an isothermal-isobaric ensemble. The solute plates with different intermolecular spacing have also been considered to examine the effect of the topology of hydrophobic plates on the adsorption behavior of confined water in the presence of an external magnetic field with an intensity ranging from 0.1T to 1 T. The results demonstrate that magnetic exposure decreases the density of water for the plates with intermolecular spacing of a0 = 4 and 5 Å. This suggests that the free energy barrier for evaporation can be lowered by the applied field, and the hydrophobic solutes consisting of condensed n-octane molecules are apt to aggregate in the aqueous solution. In contrast, the magnetic field improves the dissolution or wetting of solutes comprised of loosely packed n-octane plates of a0=7Å. A magnetic-field-induced adsorption-to-desorption translation, which is in agreement with the experimental results provided by Ozeki, has also been observed for the plates with intermolecular spacing of a0 = 6 Å.
Study on CO2 Laser Welding of AZ31 Magnesium Alloy Sheet Produced by Strip Casting Process
Authors: Zhang Jun Wei , Hu Xiao Dong , Zhang Dan
Published: April 2011

Strip casting process is a kind of promising near net shape technology for producing magnesium alloys strip. The microstructure and mechanical properties of CO2 laser welded as-cast AZ31 magnesium alloy sheet were investigated. The microstructure of base material (BS) was typical columnar dendritic structure. A significant grain refinement occurred in the fusion zone (FZ) due to the rapid cooling, while an obvious grain coarsening occurred in the heat affected zone (HAZ). The tensile strength and elongation at fracture of weld joints were reduced due to the weld depression caused by high heat input. The hardness in the FZ was the highest due to fine grains, while there was a decrease in hardness of the HAZ, but little variation compared with the hardness of the BS.
The Cylindrical Structure of Metallic Bipolar Plates for Proton Exchange Membrane Fuel Cell
Authors: Lan Jian , Ni Chen , Hua Lin
Published: April 2011

As a key component of proton exchange membrane fuel cell (PEMFC), the bipolar plate’s performance will directly affect the power output and battery life of the fuel cell. The conventional metallic bipolar plate is prone to warp, and has large flatness error with residual stress induced by forming process. This will result in contacting incompletely with membrane electrode assemblies (MEA) and lower fuel cell efficiency. A cylindrical structure of the PEMFC metallic polar plate is proposed to improve its stiffness and to reduce assembling error of the fuel cell. The polar plate features, which were originally designed on a flat surface, are projected onto the cylindrical surface with a certain curvature. Two cylindrical polar plates are welded together to become a bipolar plate. The finite element method is applied to compare the stiffness of the conventional and cylindrical polar & bipolar plates. The cylindrical bipolar plate has better stiffness and anti-warping than the conventional bipolar plate. The feasibility of the cylindrical structure is verified by experiment and provides a new idea for the improvement of the bipolar plate and fuel cell stack.