bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of a CAN Network with Ethernet and Wireless CAN Interface
Authors: Gao Zhi Yang , Zhao Hong Tao , Han Rong Bao , Zhang Hong Shuo , Song Wei Ye , Li Chuan Nan
Published: January 2012

Controller Area Network (CAN) is a leading serial bus or network for embedded control since this protocol’s development in the early 1980s, and Ethernet has become the dominant LAN architecture, currently which also is widely applied in embedded control. In order to resolve the interconnection of CAN network and Ethernet, a CAN network with Ethernet and wireless CAN interface is designed, which contains a wired and wireless CAN-Ethernet gateway based on μIP TCP/IP stack protocol, a wired CAN network and a wireless CAN network. Microprocessor STC12C5A60S2 is used as the MPU in the gateway, Ethernet controller ENC 28J60 is connected to Internet through adapter HR911105A and RJ45, CAN interface chips are SJA1000 and PCH82c250, wireless module utilize the single RF transceiver chip nRF2401. The structure of hardware and software of this system are presented, and testing program show that this system can transport data with each other among Ethernet, the wired CAN nodes and the wireless CAN.
Parallel Algorithm for Transient Stability Online Simulation
Authors: Xue Tian Liang , Wang Fang Zong , Ye Jing
Published: January 2012

Parallel computation is an effective approach to real-time simulation and transient stability online assessment of large-scale power systems. In this paper, the s-stage 2s-order symplectic Runge-Kutta-Nyström method is adopted for transient stability simulation of power system using classic model. Using Butcher transformation, a new parallel algorithm has been derived. The proposed algorithm has the convergence characteristic of a Newton type method and is of fully parallel-in-time. Through numerical simulation where the IEEE 145-bus power system is used, the proposed algorithm has been tested and compared with the conventional parallel-in-time Newton approach using implicit trapezoidal rule.
An Efficient Frequent Patterns Mining Algorithm over Data Streams Based on FPD-Graph
Authors: Tan Jun Shan , Kuang Zhu Fang , Yang Guo Gui
Published: January 2012

The design of synopses structure is an important issue of frequent patterns mining over data stream. A data stream synopses structure FPD-Graph which is based on directed graph is proposed in this paper. The FPD-Graph contains list head node FPDG-Head and list node FPDG-Node. The operations of FPD-Graph consist of insert operation and deletion operation. A frequent pattern mining algorithm DGFPM based on sliding window over data stream is proposed in this paper. The IBM synthesizes data generation which output customers shopping a data are adopted as experiment data. The DGFPM algorithm not only has high precision for mining frequent patterns, but also has low processing time.
The ASIC Design and Verification Based on Verilog HDL
Authors: Yuan Yu Ying , Luo Yong Gang
Published: January 2012

Logic design and verification is the frontend of ASIC (Application Specific Integrated Circuit), and is a very important design part during the design process of ASIC. A Verilog HDL design case－2×2 SDH digital cross-connect matrix is provided to illustrate the entire design process including logic-level description, verification and synthesis based on the frontend tools of Synopsys. After that a gate-level netlist conforming to the design requirements can be obtained.
Usage Control Model Based on Regular Grammar
Authors: Wu Hai Ying
Published: January 2012

Traditional access control models through search Access Control List(ACL) to authorize [1-3]. Traditional access control models fail to satisfy the modern information system, thus Usage Control( UCON ) models were produced and fundamentally enhanced the traditional access control. The UCON models are considered as the next generation access control models. This paper is organized as follow. Section 1 introduces the Usage Control models. Section 2 introduces Regular Grammar ( RG ). Section 3 gives the RG of the 16 core ABC UCON models. Section 4 gives the RG of on-line antivirus procedure. Finally, section 5 summarizes this paper.
Finite Difference Modeling of Elastic Wave Propagation
Authors: Zhang Qiang , Du Qi Zhen , Gong Xu Fei
Published: January 2012

We present a staggered-grid finite difference scheme for velocity-stress equations to simulate the elastic wave propagating in transversely isotropic media. Instead of the widely used temporally second-order difference scheme, a temporally fourth-order scheme is obtained in this paper. We approximate the third-order spatial derivatives with 2N-order difference rather than second-order or other fixed order difference as before. Thus, it could be possible to make a balanced accuracy of O (Δt4+Δx2N) with arbitrary N. Related issues such as stability criterion, numerical dispersion, source loading and boundary condition are also discussed in this paper. The numerical modeling result indicates that the scheme is reliable.
Research and Design on Intranet Security File System
Authors: Chen Yan Shen , Han De Zhi
Published: January 2012

To solve the data security issue in intranet massive storage system, a Multi-Protocol Secure File System ( for short MPSFS) is designed. Firstly, the MPSFS supports the access of users with different protocols, and provides the unified access interface, so can achieve high performance in data storage and retrieval; secondly, with the help of other technologies such as identity authentication, access control and data encryption, the MPSFS can effectively ensure the data security in the intranet storage system. By the experiment, the MPSFS can provide good security and scalability for intranet massive storage system, and has less effect to the network I/O performance.
Sustainable Development of The “Four-in-One” Model in Rural Areas of Northern China: A Village Case Study
Authors: Zhou Zhong Ren
Published: January 2012

Based on an investigation of a typical village in northern China, we found that the “Four-in-One” ecological model for homes (sunlight greenhouse, pig house, toilet, and biogas digester) achieved benefits with regard to economy, society, energy use, and a cleaner environment once it was established. However, problems still impede the sustainable expansion of the model. The main problems are a relative lag in the management of biogas digesters, challenges in the production and distribution of farm products, home layout and piggery sanitation, competition for labor between agricultural production and outside work, and problems with land resources, investment and credit expenses, and infrastructure. In the end, some countermeasures are proposed, namely, perfecting the technical service system, strengthening farm training and improving agricultural production skills, establishing a stable distribution channel for marketing farm products and a suitable agriculture management model, selecting appropriate households for the Four-in-One model, and so on.
Requirement Uncertainty Modeling for Service Oriented Self-Adaptive Software
Authors: Liu Wei , He Chen Wan , Feng Zai Wen
Published: January 2012

Service-oriented software utilizes services as fundamental elements for developing applications that have the capability to autonomously modify their behavior at run-time in response to changes in their environment. While a few techniques have been developed to support the modeling and analysis of requirements for self-adaptive systems, limited attention has been paid to the description of service requirements and uncertainty in requirements of service-oriented software. In this paper, we propose a task solving strategy for requirement analysis and modeling framework as a fundamental of self-adaptation evolution. We introduce task solving strategy method for requirement analysis process; a context snapshot model to represent uncertainty in requirement with domain knowledge; goal-oriented context requirement to model user requirements and process-oriented context requirement to model service requirements; and finally, propose means-c-end analysis to relate user and service requirement with context condition.
Study on the Evaluation Models of Direct Economic Losses in Urban Flood Disasters
Authors: Kong De Cai , Wu Feng Ping
Published: January 2012

Based on disaster system theory, flood risk assessment was conducted in regard to natural properties of hazard and environment as well as socioeconomics of hazard-affected bodies. The general process of economic loss evaluation in flood was consisted of two parts, namely the evaluation of pre-disaster value of hazard-affected bodies and the determination of direct economic loss rate in the flood disaster. At last, the evaluation models of direct economic losses in urban flood were established.
Research and Design of Electronic Speech Reader Based on Text-to-Speech Technology
Authors: Yang Hong Li , Yang Yun , Yue Zhu
Published: January 2012

TTS, namely text-to-speech, is a kind of technology who can convert text information into sound signal according to information Speech processing rules. TTS, as the synthetic technology of the pronunciation, is the key technology in the current development of computer technology, and one of the most forward technical in its voice service, telephone banking, and information home appliances, mobile PDA fields. TTS has its extensive applications. In this paper, TTS is applied to electronic speech reader, which changes traditional way to read e-book, and both listening to and novels and learning English. This article introduces a method about how to make use of TTS technology, and how to achieve an electronic Speech reader of programming based on Visual Studio C# 2008 environment bring API and Microsoft SAPI interface.
Application of NSGA-II and PGA in Network Planning of the Distributed Systems
Authors: Li Zhi Keng
Published: January 2012

The issue of power reliability in a middle-voltage distributed network is now emerging as an international concern. Therefore, in this paper, an optimal model with two objectives, reliability and economy, for network planning of a distributed system is established. Based on the Pareto optimum theory, the Non-dominated Sorting Genetic algorithm II (NSGA-II), which is combined with the specific genetic operators in Partheno-genetic algorithm (PGA), is used to solve the proposed model. By the obtained well-proportioned Pareto solution set, the final network planning scheme can be found according to different real engineering conditions, thus different demands in engineering can be satisfied. A typical example is used to verify the proposed model and algorithm effective.
P2P Streaming Media Technology in the Remote Education System
Authors: Zhang Feng , Sun Wen Hao , Huo Yu Xia
Published: January 2012

Education modes, such as distance education and online learning, based on client/server mode in traditional streaming systems, have bottlenecks in network bandwidth and single server point. This paper reviews these bottlenecks and integrades P2P technology together with streaming media technology, and provides a discussion on the steaming media over P2P technology.
Dynamic Virtual Hub Location Problem
Authors: Baher Nima Tahami , Taghipourian Farzin , Teymourian Ehsan
Published: January 2012

A controversial issue in the planning of air transportation networks is inclement weather. In this situation, hub facilities would not be able to provide a good service to their spoke nodes temporarily. Thus, some other kinds of predetermined underutilized facilities in the network are used as virtual hubs to host some or all connections of original hubs to recover the incurred incapacitation and increase network flexibility and demand flow.Here, we present a dynamic virtual hub location problem with the aim of minimizing transportation cost in the network. We examine the effectiveness of our model using the US well-known CAB data set.
Study on the Software Outsourcing Development of Liaoning Province
Authors: Zhang Yue
Published: January 2012

Since the 1990s, the increasingly more fierce competitions and the changing-over market demands all over the world have pushed all kinds of enterprises to be faced with great pressures that they are necessary to constantly shorten the time of delivery, reduce all costs, increase the qualities of products and improve the services. For this reason, it is highly difficult for these enterprises to depend on their internal resources to cope with those great pressures, which just converts the service outsourcing into a major engine of the transnational investments. Furthermore, the software outsourcing, as a quite popular service outsourcing model at the international world at the present time, is highly more and more obvious to transfer to China. Under the circumstances, in this paper, the author tries conducting an argumentation analysis on the software outsourcing development of Liaoning province from the aspects of its regional environment, talent environment, industrial environment, and social environment, makes a conclusion on the advantages and disadvantages of the Liaoning province in the software outsourcing, and finally puts forward corresponding countermeasures and suggestions.
A Study on the Recursive Relationship between BPR and ERP Implementation
Authors: Tabrizi Reza Sigari , Marthandan Govindan , Esferjani Pejman Sheibani , Chavosh Alireza , Halimi Anahita Bagherzad
Published: January 2012

The aim of this paper is to study the issues of the relationship between ERP implementation and BPR for manufacturing. This study pay attention to the literatures related to the relationship between BPR and ERP implementation, which were addressed by the researchers and practitioners. As both ERP and BPR follow organizational change, the researchers found that organizations must take a critical look on the collaboration among software vendors, consultants, processes, and organizations. Fine-tuning the integration can help successful BPR and ERP implementation.
Text Information Extraction: in Context of Indian Languages
Authors: Sethi Ganesh K. , Bawa Rajesh K.
Published: January 2012

Text data present in images contains useful information and its extraction involves detection, localization, extraction, enhancement and recognition. However, the problem is challenging due to fact that text can have various styles, size, orientations, alignments, effect of lighting conditions. While a large number of techniques have been proposed in the past for extracting text from images and video frames for foreign languages, not much research has been carried out for Indian languages. The purpose of this paper is to review various algorithms for the problem for foreign as well as for the for the Indian languages.
Empirical Analysis of Change of Consumption Structure between Henan Urban and Rural Residents
Authors: He Chun Hua , Zhang Xiao Mei , Li Bing Jun
Published: January 2012

Based on sectional data regarding income and expenditure of Henan urban residents from 2006 to 2009, this paper applies ELES model to have a quantitative analysis of consumption expenditure structure of Henan urban and rural residents, involving three aspects including marginal propensity to consume, demand income elasticity and price elasticity. The results show that the marginal propensity to consume of rural residents is relatively low, the proportion of basic consumption expenditure in foodstuff and dwelling is large, giving priority to living type consumption, while some development potential for urban residents exists in the consumption of transportation, correspondence, culture and education, recreation and medical care.
A Research into an Intrusion Detection System Based on Immune Principle and Multi-Agent in WSN
Authors: Liu Zhi Yue , Wang Jian
Published: January 2012

Along with deep-going researches and practical applications of Wireless Sensor Network, security issues contained therein are raising a growing concern. Based on a systematic analysis of the current intrusion detection system and with integration between the mechanism of artificial immune system and multi-agent technology, the paper provides with a new model of an intrusion detection system based on artificial immune system and multi-agent technology, and further introduces the functions of agents in the model as well as the process of antibody selection.
Research on Real-Time Simulation of CAN Bus with Priority Promotion Algorithm
Authors: Wu Jie Chang , Hao Jia , Guo Chao You
Published: January 2012

In order to analyze and evaluate real-time performance of CAN bus with priority promotion algorithm (PPA), the OPNET model of CAN bus with PPA has been set up in this paper. Based on simulation experiments, the performances of average delay of PPA and Fixed Priority Scheduling (FPS) and Earliest Deadline First (EDF) algorithm are analyzed and the experiments also indicate that in a slight overload condition FPS algorithm makes the transmission delay of low priority data frame increased significantly, and even occurs the phenomenon that low priority data frame can not be sent at any times; EDF algorithm keeps the average delay of all the node at 2ms or so, the objective of scheduling information is achieved, but the average delay of hard real-time node is increased; compared to EDF algorithm, PPA increases the average delay of non real-time node appropriately through using different promotion weights, and reduces the average delay of hard real-time node. The results show that the PPA has the better scheduling and availability in real-time control system.
Research of Fire Alarm System Based on RFID and Temperature Sensors
Authors: Wu Lin Li , Xu Hong Sheng
Published: January 2012

RFID (radio frequency identification) chips are usually called electronic volume label or radio frequency volume label. Now a new transponder is developed and it can accurately measure the surroundings pressure, temperature and humidity. Besides, it can complete the function of sensor by combining with RFID chips, which make the transponder can monitor the change of pressure, temperature and humidity and this information can be sent to reading device through RFID chip. This paper combines this technology and fire alarm system to prevent fires. This system connects RFID chips CC2430 sensor with each temperature sensor DS18b20. DS18b20 is placed in the area needed to be monitored according to certain order, and the single way is employed to connect every CC2430 module. The temperature sensor DS18b20 and its connection with CC2430 chips hardware are very practical and simple. We combine its address line, control line, and data line into one signal line which can be controlled individually and just needs CC2430 1 root I/O lines.
Research on Mobile P2P Network Architecture
Authors: Zhao Gang
Published: January 2012

This paper firstly respectively introduces P2P technology and the characteristics of the wireless network technology are given, and then combines the demand between the two, and based on this, given new technology that P2P technology toward the mobile wireless communication field: the definition of mobile P2P networks, and finally introduces the characteristics of the mobile P2P networks and typical application scenario.
Automated Electronic Pen Aiding Visually Impaired in Reading, Visualizing and Understanding Textual Contents
Authors: Joshi Kumar A.V. , Madhan Prabhu T. , Mohan Raj S.
Published: January 2012

Blindness is an obstacle that is not even comprehendible for the non-blind. Many day-to-day activities may become challenging, complicated and may require much more labor for those with eye-sight problems or blindness. One of the major problems they face is understanding visual or text information which are not in the Braille form. Not every written or printed document that a blind person would like to read is available in Braille. A blind cannot read any of the handwritten documents. They feel it very difficult, while someone has to read it for them. This is the fundamental issue that we deal with, and try to solve, with a new piece of technology, which is essentially an automated text-to-audio converting pen. According to this keynote concept, any piece of text that a person would like to read/understand is converted to an audio signal. This audio signal is transmitted to the person’s ears through wireless technology such as Bluetooth. Since this technology is in the form of a pen, it is very convenient to use and is also portable. This instrument is radical and can definitely be a empowering force in a blind person’s life, and can be helpful in relieving them of their frustration of not being able to read whatever they want, thus making their life easier.
Evaluation Method for Students’ Grade Statistics System Based on Fuzzy Analytic Hierarchy Process
Authors: Lei Shi
Published: January 2012

Analytic hierarchy process (AHP) and fuzzy theory which is defined as fuzzy analytic hierarchy process (FAHP) has been widely used for a variety of applications including evaluation and decision-making. In the study, the method based on FAHP is proposed to evaluate students’ grade statistics system, where analytic hierarchy process is a common method and is applied for various sectors for analyzing qualitative criteria to weight the alternatives, and the merit of using fuzzy approach is to express the distribution of evaluation values of each index. On the basis of describing evaluation indexes for students’ grade statistics system, and the evaluation model of students’ grade statistics system is created based on analytic hierarchy process and fuzzy theory. Finally, the case is adopted to testify the effectiveness of the proposed method.
Motion Artifacts Comparision for Subjective and Objective Results
Authors: Tian Ye , Mou Tong Sheng , Xi Hai Yan
Published: January 2012

In this paper, an integrated test system involving direct racking and simulation test systems is presented for evaluate the motion artifacts of flat panel display, to refrain from the high system requirements of direct method and environment limitations of simulation method. And then system structure and operating principle are expatiated and analyzed. Although the testing results are not exactly the same as subjective observing, they are still essentially homogeneous. Good statistical correlation illustrates the value of this study. The work presented here has implications for future contribution to research and measurement of motion artifacts of flat panel display.
Two Solutions of EMD Mode Mixing
Authors: Zhai Xue Ming , Zhao Li Na , Zhang Pan
Published: January 2012

Based on the mode mixing problem which exists in EMD(Empirical Mode Decomposition)method, this paper provides two ways to solve this problem.First is to increase the sampling frequency, add a characteristic wave with high amplitude and frequency in the process of signal analysis,then put the FFT transformation on the IMF(intrinsic mode function) which derives from EMD method,while in the process of transformation,binary scaling to the sampling frequency to adapt to the changes of each IMF component, making the spectrum more clear and the analysis of the data with the relevant frequency components more careful.The second is EEMD ,which is proposed in recent years.We use this method to deal with the signal ,after that,then use EMD method to analyse it,which will get a good result.While a comparison with the two methods and point out the different ranges of applications.
MATLAB Implementation of Face Identification Using Principal Component Analysis
Authors: Mahmood Nasrul Humaimi , Ariffin Ismail , Omar Camallil , Jaafar Nur Sufiah
Published: January 2012

Face is the greatest superior biometric as the face has a complex, multidimensional and meaningful identity compared from one person to another. Face identification is executed by comparing the characteristics of the face (test image) with those of known individual images in the database. This paper describes the used of the Principal Component Analysis (PCA) algorithm for human face identification based on webcam image. The MATLAB is used as a tool for image processing and analysis. The important decision to identify the person is by the minimum distance of the face images and known face images in face space. From the results, it can be concluded that the work has successfully implemented the PCA algorithm for human face identification through a webcam.
Post Classification Using Cellular Automata for Landsat Images
Authors: Sarhan Ebada , Khalifa Eraky , Nabil Ayman M.
Published: January 2012

The research presented in this paper aims at improving the accuracy of land-use maps produced from classification of Landsat images of mega cities in developing countries. In other words, the main objective of this paper is to find a suitable post classification technique that gives optimum results for Landsat images of mega cities in developing countries. To reach our goal, the paper presents a classification of two TM-Landsat sub scenes using a traditional statistical classifier (Maximum Likelihood) into four land cover classes (vegetation-water-Desert-Urban); then the accuracy assessment for the produced land-cover map will be calculated. Following to this step, three post processing techniques- Majority Filter, Probability label Relaxation (PLR), and Cellular Automata (CA) - will be applied in order to improve the accuracy of the previously produced land cover map. Finally, the same accuracy assessment measurements will be calculated for the two land-cover maps produced by each of the above post classification techniques. Initial results will show that CA outperformed the other techniques. In this paper we propose a methodology to implement a satellite image post classification Algorithm with cellular Automata.
The Application on the Forecast of Plant Disease Based on an Improved BP Neural Network
Authors: Jin Bao Shi , Zuo Yu Hu , Ma Xiao Dan , Guan Hai Ou , Tan Feng
Published: January 2012

Aiming at the disadvantages of large computing, slow convergence and easily trapping into local minima of traditional BP network, a new method named batch momentum learning algorithm which combining the momentum with batch gradient descent algorithm has been used to be as the learning algorithm of connection weights and threshold of BP neural network, through using this method to forecast the prevalence of plant disease, the convergence speed of BP neural network has been enhanced.
Power Loss Analysis of Matrix Converter Based on RB-IGBT
Authors: Yang Yi Wei , Zhou Bo , Wei Jia Dan , Shi Ming Ming
Published: January 2012

The power loss analysis of matrix converter based on RB-IGBT is discussed in this paper. The on-state performance and switching process of RB-IGBT are tested; the on-state curve is obtained by the mathematical fit of the experimental data; On the basis, a method of power loss calculation for matrix converter under the input line-to-line voltage control strategy and four-step commutation strategy is investigated; Finally, the simulation result obtained by MATLAB/Simulink verifies the correctness and validity of the proposed method.
Design of Numeric Control Interpolation Compensation Algorithm Based on DSP
Authors: Wang Xin Na , Bi Xi Yan , Zhang Ping Chuan
Published: January 2012

Using the TMS320C31 floating-point family DSP devices from the U.S. TI Company to have built the slave system for numeric control lathes. It makes full use of the advantages of TMS320C31 DSP, such as high-speed, high precision motion control in real time, to implement the linear and circular interpolation algorithms, sports section of acceleration and deceleration control content. Experiments show that: not only ensured the precision of digital control systems, and improved the interpolation of real time; solved the uniform allocation while any given pulse number in interpolation cycle; overcame the poor flexibility of original digital logic circuits of interpolation. Multi-axis control can be achieved to improve overall system performance. It’s with high practical value.
Design of Ultrasonic Wave Velocity System for Intensity of Laminated Veneer Lumber Based on AVR Microcontroller
Authors: Xiao Jiang , Sun Da Gen , Huang Li Yan
Published: January 2012

This paper does research in the independent development detection system for intensity of laminated veneer lumber via ultrasonic wave. By measuring the velocity of ultrasonic wave and other parameters on-line, the dynamic elastic modulus of laminated veneer lumber can be calculated through AVR as the data processing core of this system. And because of the dynamic elastic modulus showed positive correlation in plank strength, the timber grade can be divided through this system.
Adaptive PID Control for the Air-Conditioning System in Spray-Paint Workshop Based on Fuzzy Logic
Authors: Dong Jie
Published: January 2012

As the improvement of the modern workshop’s demand for cool supply, heating system, how to effectively manage the air-conditioning equipments to satisfy the production skills for air-conditioning system has become an important subject for modern workshop design. This paper comes from the No.1 motorcar company’s project about the automatic air-conditioning system of the car spray-paint workshop. For many reasons, the conventional PID control is difficult to satisfy the car spray-paint production’s strictly demands of the temperature, after a careful research of the object, we utilize the principle of fuzzy PID adaptive control to design a fuzzy PID controller, then put it into the air-conditioning heater’s controlling, through the practice, we find the controller has a good robust property and realized a good control result.
Axial Resolution of the Laser Affected Voxel of the Ultra-Short Pulse Laser Modification inside of the Transparent Media
Authors: Chang Gang , Tu Yi Liu
Published: January 2012

The Ultra-Short pulse laser direct 3D writing inside of the transparent material becomes a commonly accepted tool to achieve the micrometer scale optical devices and lab-on-chips. The disproportionate scale of the laser affected volume (Affected voxel) along the axial direction degrades the precision of the processing. The refraction will not only change the focusing position and elongate the axial scale of the affected voxel, but also cause harmful astigmatism. The shape of the affected voxel is discussed and experimentally detected to provide the information to establish a practical processing plan.
Dynamics of Space Station with Changing Structures
Authors: Yu Zheng Ning , Li Wen Long , Shi Peng , Zhao Yu Shan
Published: January 2012

Deploying traditional method for establishing dynamics model of space station is inefficient when the structure of this space station will change. Therefore, a new approach was proposed to obtain general model that suits different structures and configurations. The new method is based on invariant absolute coordinates set and Newton-Euler method. Two simple constraints are firstly described and then used to construct new, more complex ones. While the coordinate set remains the same, main program configuration procedure is executed by including or excluding equations, thus making the model building process more simple. After this, specific equations of motion are being solved. Applying the technique to space stations of different configurations and structures gives good results, and those results are well-agreed with theoretical analysis.
Generating Test Cases by an Innovative Way
Authors: Zhao Shu Mei , Lv Chun Feng
Published: January 2012

Generate sufficient test cases is difficult and expensive, especially for testing software systems whose input is structurally complex. This paper proposes a new approach to generating a large number of test data from a few seed test cases, called data mutation. In the new approach, mutation operators transform the input data rather than the program under test or the specification of the software. It is not a test adequacy measurement. Instead, it generates test cases. The paper also reports a case study with the method on testing a modeling tool and illustrates the applicability of the proposed method. Experimental results validate the effectiveness of the method.
Research on Maneuvering Trajectories Optimization in Bearings-Only Localization for Single Observer
Authors: Shi Zhang Song , Li Rui , Wang Hang Yu
Published: January 2012

Based on Crammer-Rao Lower Bound (CRLB), this paper adopts Geometric Dilution of Precision (GDOP) as the optimizing performance index to analyze the localization precision in Bearing-only localization for single observer. And the genetic algorithm is employed to calculate the optimal course sequence. The movement straight with constant velocity and movement with constant prefix angles are analyzed. Simulations show that maneuvering trajectory is propitious to improve localization precision.
A Study on Adaptive Measurement of Phase in GPS System
Authors: Wang Jian
Published: January 2012

A new adaptive method for phase measurement and its implementation system are proposed in this paper. It can be applied in GPS system to help locate the position with high accuracy. The algorithm is based on multiple sampling of sine signals. It can adapt the sampling frequency to the changes in the frequency of measured signals, and calculates the optimal value of sampling frequency. After processing the sampled data through multiple sampling, we can obtain the high-precision phase value.
Requirements Elicitation Methods
Authors: Umber Ashfa , Naweed M. Shahid , Bashir Tayyiba , Bajwa Imran Sarwar
Published: January 2012

A requirement elicitation is a task that helps a customer to define what is required, and then worked out with great care and nicety of detail. This paper surveys and evaluates some methods for eliciting requirements of computer based systems, what are the categories of these methods, what are the problems that each method involves. the solution of one method leads us to the next method so these methods are interrelated with each other .to avoid problems in one method we need another method so we can say combination of different methods can be used to elicited specific requirements. The insufficient requirements engineering process forms one important factor that cause the failure of an IT project. We elaborate a comparison of requirements development methods, evaluation criteria and also identify common factors that affect the method selection. Requirements are elicited through consultation with stakeholders so it certainly seems simple enough, But isn’t simple it is very hard.
Research on Safety Monitor System of Coal Mine Based on EPA
Authors: Peng Fu , Fan Xiao Ping
Published: January 2012

Based on the analysis of defect and shortage of traditional coalmine safety monitor system using DCS, the paper proposed a new safety monitor system using EPA and it can improve the safety and economy of coalmine safety monitor system.
An Applied Research on Reactive Current Detection Methods Based on Instantaneous Reactive Power Theory
Authors: Lan Kang
Published: January 2012

The reactive current detection methods in reactive power compensation device based on instantaneous reactive power theory were discussed in the paper. By analyzing the quality of various kinds of harmonious and reactive current detection methods in power system, and according to different compensation requirement, two reactive current detection methods ip-iq method and Hilbert method were adopted. Then it gives simulations on these two models to analyze their comprehensive performance of both stable state and dynamic state. Finally, gives a verification under a IC hardware platform.The result shows that these two methods can well inspected the three-phase reactive current, and then to complete the system compensation.
Based on S-Transformation Single-Phase Transient Faults and Permanent Fault Identification
Authors: Shu Hong Chun , Liu Chao
Published: January 2012

For both ends of the reactor with a parallel transmission lines, a method using Fault-phase voltage of low frequency component to Discrimine of the fault nature in Recovery voltage phase. In this method, different frequency bands is obtained by S-transform for Recovery phase of the faulted phase voltage capacity ,compare the low frequency part , in advance , determining the nature of the fault. Through theoretical analysis and a large number of verification of PSCAD, This method can effectively distinguish the fault type.
A Study of Meter Placement Method for Distribution Systems
Authors: Li Hui
Published: January 2012

In this paper a novel method of meter placement for distribution systems is proposed. By analyzing the characters of the sensitive matrix of estimated errors of measurements, the sensitive genes are defined which are produced by measurements in the total variance of estimated errors of measurements. The scheme of meter placement is decided according to their orders in the sensitive gene table. The new approach can use lesser real-time meter placements and more pseudo measurements to satisfy the evaluated criterions on the base of branch-current-based state estimation. An analysis is done for the IEEE 33-bus systems and tested results present the advantage of new idea.
Measurement of Fractional Optical Vortex by a Ring-Type Multi-Pinhole Interferometer
Authors: Wei Gong Xiang , Liu Yun Yan , Fu Sheng Gui , Wang Ping
Published: January 2012

We presented a method for measuring the topological charge of a Fractional optical vortex (FOV) by a ring-type multi-pinhole interferometer (RMPI). We retrieved the sampled phase of the FOV passing through a ring-type multi-pinhole plate from the Fourier transform of a single far-field diffraction intensity pattern, and found the phase of FOV around the center approximately be linear with the azimuthal angle, the slope of the phase to the azimuthal angle at the linear part is equal to the topological charge of the FOV. Thus we proposed a method for measuring the l state and determining orbital angular momentum (OAM) of a FOV based on the property.
The High Slope Stability Monitoring of the Operation Period Highway
Authors: He Zhi Yong , Yang Xiu Long
Published: January 2012

The number of the high slope along the highway is much more, except this, the geological conditions is complex. To ensure the driving safety and the normal operation of the highway, it’s meaningful to monitor the deformation trend of high slope and discover abnormal phenomenon timely and treat it. The paper taking freeway high slope monitoring project as an example, study the purpose of high slope stability monitoring, the monitoring method and the setting of the monitoring net. It also analysis the monitoring results. The results show that the monitoring spot displacements of the slope are small and there is no symptom to occur geological disaster such as landslide, slump, avalanches and so on. The slope is basically stable. The monitoring result has verified the feasibility and the effectiveness of the monitoring scheme. Expecting this can offer reference and gather experience for similar projects
Incremental Fault Diagnosis for Nonlinear Processes
Authors: Fu Ke Chang , Ming Zhu , Liu Peng , Wang Guo Jiang
Published: January 2012

A new faults classification method based on on-line independent support vector machine (OISVM) is proposed for fault diagnosis in nonlinear processes. Fault diagnosis can be taken as a pattern recognition problem. As most processes are intrinsically nonlinear, support vector machines (SVMs) are one of the most popular and promising classification algorithms. The fatal drawbacks of standard SVM is the computing overhead grows with the number of training samples, where as training samples from real industrial processes are increasing with time grows. An incremental fault diagnosis approach based on OISVM is proposed in this work. Some related problem such as variable selection and parameter setting are also discussed in this work. Simulation results on the Tennessee Eastman process (TEP) demonstrate the effectiveness of the proposed method.
Quantitative Function for Community Detection
Authors: Liu Jin Xia , Zeng Jian Chao , Xue Yao Wen , Wang Ying
Published: January 2012

Detecting and characterizing the community structure of complex network is fundamental. We compare the classical optimization indexes of modularity and modularity density, which are quality indexes for a partition of a network into communities. Based on this, we propose a quantitative function for community partition, named communitarity or C value. We demonstrate that the quantitative is superior to modularity Q and modularity density D. Both theoretical and numerical results show that optimizing the new index not only can resolve small modules, but also can correctly identify the number of communities.
Formal Verification for Polynomial Datapaths Based on Weighted Generalized Lists
Authors: Li Dong Hai , Wang Hai Chen , Fan Zhong Lei , Yang Xiao Jun
Published: January 2012

Weighted generalized list (WGL) can effectively express multi-variate polynomial. In this paper, variable ordering algorithm, variable replacement algorithm and variable mergence algorithm for WGL are presented. Based on variable replacement algorithm, variable ordering algorithm and variable merging algorithm, an algorithm of backward-construction WGL is proposed, which is used to verify the equivalence between the behaviors specification and register transfer level (RTL) implementation of polynomial datapaths. Experimental results show that the proposed method is effective.
Ensemble Data Classification based on Diversity of Classifiers Optimized by Genetic Algorithm
Authors: Thammasiri Dech , Meesad Phayung
Published: January 2012

In this research we propose an ensemble classification technique base on creating classification from a variety of techniques such as decision trees, support vector machines, neural networks and then choosing optimize the appropriate classifiers by genetic algorithm and also combined by a majority vote in order to increase classification accuracy. From classification accuracy test on Australian Credit, German Credit and Bankruptcy Data, we found that the proposed ensemble classification models selected by genetic algorithm yields highest performance and our algorithms are effective in building ensemble.
Wireless Flight Data Recorder (FDR) for Airplanes
Authors: Ashish Ankan , Chougule S.B.
Published: January 2012

This paper is on the urgent need of today’s Aviation Sector which comes smart materials in airplanes. We have made wireless system i.e. a real time Flight Data Recorder (FDR) in which the data(Parameters like Engine Temperature ,Fuel Level, Speed ,Location (Latitude And Longitude)etc. ) getting stored in real time, in the plane’s FDR(commonly known as Black Box), same data will get transferred to our Personal Computer(PC) which is at ground. The data will be transferred via XBEE-RF Module( long range). Also, the Global Positioning System (GPS) device will send the Position coordinates logged by the micro-controller at periodic intervals. After processing the data, the data will be uploaded to the server via the GPRS/Internet Connection. The program resident on the server will process the data and map the position on a digital map. The digital map view can be accessed through and other PC’s using the Protocol, thus giving real time positioning and different parameters of the plane on ground. “This paper focuses on sufficient data for analyzing the air disasters as short term application, and reduction of air disasters as long term goal.”
The Development and Promotion of Distributed Power in Our Country
Authors: Qiao Huan Huan , Lu Xin , Li Hong Juan
Published: January 2012

Distributed power with the characteristics of clean, convenient, reliable, less transmission losses and suitable for renewable energy, is appropriate for China's sustainable development. In this paper, we discuss the necessity of developing distributed power in our country and the impacts when combined to the grid. Then we put forward the paths and methods to promote distributed power according to the situation in our country. Finally, we look ahead the development of distributed power With China's rapid economic development, the contradiction between energy supply and demand is becoming increasingly prominent. In addition, the huaman survival environment is deteriorating. There comes a new form of power generation- distributed power, which is mainly based on new energy and renewable energy. It is of great significance to improve China's energy structure, and to realize sustainable development in our country.
Multicast Grooming Algorithms in Waveband Switching Multi-Domain Optical Networks
Authors: Wu Jing Jing , Guo Lei , Hou Wei Gang , Ning Zhao Long
Published: January 2012

In this paper, we study the multicast waveband grooming in multi-domain optical networks and propose three heuristic algorithms, Per-Domain Multicast Grooming (PDMG), Virtual Topology Multicast Grooming (VTMG) and Hierarchical Multi-domain Multicast Grooming (HMMG). Simulation results show that, comparing with PDMG and VTMG, HMMG has the best performance of ports savings and the lowest blocking probability.
Improving Forward Current Characteristics of Diode by X-Ray Irradiation
Authors: Niemcharoen Surasak , Srithanachai Itsara , Ueamanapong Surada , Poyai Amporn
Published: January 2012

These papers investigates the effect of X-ray on forward current characteristics of diode. The forward current of diode after X-ray irradiation energy 40 keV at the exposure time ranging 5, 10 second was increased, while 15 and 20 second was decreased. X-ray causes changing of the electrical characteristics of diode. Series resistance is the main factor for analyze on forward current characteristics. From the results, X-ray can improve performance of diode at the exposure time for 5 and 10 second.
Optimizing Approach to Varying Load of the Refrigeration System Based on Fuzzy Logic Control
Authors: You Yu Wen , Zhang Zhi Gang , Guo Chun Mei , Zhang Li Lu
Published: January 2012

This paper proposed an approach for a control, which fuzzy logic method was designed and used in the refrigeration system based on the summary of the common control methods on electronic expansion valve (EEV) and variable speed compressor(VSC). The experiment had been carried out, that showed the fuzzy logic controller achieve more stable superheat and water temperature values against to a disturbance and had good energy saving potential.
The Experimental Research Based on the GPS P3 Code Receiver Common-View Comparison System
Authors: Zhu Jiang Miao , Guo Kai , Gao Yuan , Han Dong
Published: January 2012

GPS common-view is the main method for the time and frequency remote transfer currently, of which the uncertainty can reach several nanoseconds. The GPS P3 code receiver has recently become one of the international research hotspots, which can improve the comparison accuracy by revising ionosphere delay real-time values observed at two frequencies. In order to test the accuracy of the GPS Common-view comparison system, two EURO-160 receivers and a SEPT POLARX2 receiver constitutes the zero-baseline Common-view comparison experiment. The test result of experiment shows that the common-view system can reach the accuracy of 2~3ns, which is better than the single-frequency receivers. This system can present better time & frequency transfer services.
The Research of Smart Grid Protect System Based on Distributed Power Connection
Authors: Zhang Ji Hong , Wu Zhen Kui , Wei Yi Li , Zhang Ji Hong , Wu Zhen Kui , Li Han Shan , Li Hua
Published: January 2012

The produce causation and the development direction of the distributed power and the far-reaching meaning of constructing China characteristic Smart Grid are introduced in this paper. The influence to the traditional transmit electricity net protection under the background of the distributed power being connected on a large scale and the emphases attention technic problems are analysed emphatically. The tiny net technic is explored, which is the main method of the distributed power connection and bring into play its efficiency. Finally, the development aim of the Smart Grid protect system is prospected.