bluuebunny/crossref_metadata_2025 huggingface dataset:
A Vision-Based Embedded Control System for Crystal Reorientation and Inspection
Authors: Xie Sheng Q. , Tsoi Yun Ho , Singh Avilash
Published: January 2012

This paper proposes a vision-based embedded motion control system that is developed in our research group. The system is an integration of three subsystems including, an embedded positioning platform, a vision system for inspection and a crystal reorientation system. The system is used as a positioning platform and crystal reorientation system to automate the crystal reorientation process. This process is important in ensuring that the units are correctly oriented for production processes. The focus of this research is placed on how to develop the embedded positioning platform, the crystal reorientation system, and how to improve the system performances including positioning and reorientation accuracy in high speed operation and quality of inspection. A distributed control architecture has been developed using PIC18F4520 microcontrollers. Tests run on the complete system have shown that the system is capable of a minimum indexing time of 1.53 units per second and a reorientation time of 1.42 seconds.
A Simple Method for Deriving the Formulas of Relativity
Authors: Xu Ye Lin
Published: January 2012

In this paper, a new and simple method for deriving the formulas of Relativity is introduced. Einstein derived the formulas of Relativity by applying two hypotheses about light velocity, but this process was rather complicated and hard to understand. Nuclear physics has been developing for nearly a hundred years and has accumulated plenty of experiment results. Now it is feasible to derive Einstein’s formulas by employing the experiment results of nuclear physics. According to the result that energy is an expression form of mass, E=m can be obtained. We differential the above formula, adopt several steps of simple mathematical calculation, a simple differential equation can be obtained. Take the result of “light velocity is the velocity limit of a moving object” as the boundary condition of the differential equation, we get energy formula and mass formula. Length formula and time formula can also be easily derived based on the experiment result of particle speed in a cyclotron. As all the formulas of Relativity in this paper were derived by applying true experimental results from nuclear physics rather than hypotheses, they are reliable and easy to understand.
New Fault-Tolerant Hierarchical Routing Protocol for WSNs
Authors: Keykhosravi Davood , Hosseinalipour Ali
Published: January 2012

Clustering in wireless sensor networks is one of the crucial methods for increasing of network lifetime. There are many algorithms for clustering. One of the cluster based algorithm in wireless sensor networks is LEACH algorithm. In this paper we proposed a new clustering method for increasing of network lifetime. In proposed method Clustering is done symmetrically and the best node with respect to remained energy and distance of other nodes in comparing with each that selected as a cluster head. Although in this protocol we didn’t use GPS but we could find geographical position nodes so easily. However, failures in higher level of hierarchy e.g. cluster-head cause more damage to the system because they also limit accessibility to the nodes that are under their supervision. In this paper we propose an efficient mechanism to recover sensors from a failed cluster. In this performance of the proposed algorithm via computer simulation was evaluated and compared with other clustering algorithms. The simulation results show the high performance of the proposed clustering algorithm.
Research on DC-Side Voltage Control of Active Power Filter
Authors: Rong Ya Jun , Yuan Ji Wei , Dong Jie , Shangguan Han Lu
Published: January 2012

This paper analyzes the control principle of DC-side voltage from the aspect of instantaneous conversation of energy of active power filter, On the basis of these, to deal with the weakness of larger static error and overshoot about PI control method, a combined controller constituted PI controller and fuzzy controller is proposed. This method combines the merits of PI control and fuzzy control, and has some advantage of small overshoot, fast responses and small static errors. The Matlab simu1ation results show that the proposed method is valid and feasible.
A New Method for Palmprint Identification
Authors: Qin Xu Liang , Wu Qin Ge , Han Zhen Yu
Published: January 2012

This paper proposes an efficient method for personnel identification which is based on Triangular Points of human hands and Wavelets Packet Transformation. In the stage of preprocessing, depending on position of the triangular points, a unique method to divide the Region of Interest (ROI) is proposed; at the same time, the distances among these points constitute an eigenvector which is the first feature of the palm. In the next stage, another palmprint feature is extracted by the Wavelets Packet Transformation. The two features are used as indexes to the palmprint templates in the database and the searching process for the best matching is conducted by a layered fashion. The experimental results illustrate the effectiveness of this method.
The System Devise for Transmission of Multiplexed Testing Signals Using Spread Spectrum Technology Based on DSP
Authors: Zhang Lian Jun
Published: January 2012

In this paper spread spectrum transmission system of multiplex detecting signal is studied. The method of transmission after multiplex detecting based on signal spread spectrum and code division multiplexing is mentioned. The system realization for the transmission of multiplexed testing signals using spread spectrum technology based on DSP is discussed. The circuit system is devised and testing conclusion is normal.
Dunford-Taylor Integral and the Isotropic Tensor Valued Functions Having the Commutative Property with their Tensor Argument
Authors: Ebrahimi Mehran , Asghari Mohsen
Published: January 2012

Isotropic tensor valued functions of tensor arguments play an important role in the formulation of the equations governing the behavior of solid materials in the field of continuum mechanics. When the tensor argument is non-symmetric, the complexity and the difficulty in dealing with the tensor functions are high. In this work, the issue of expressing an isotropic tensor valued tensor function of a non-symmetric tensor argument is attention by utilizing the Dunford-Taylor integral. An important subclass of the isotropic tensor functions is considered with the commutative property.
Peristaltic Pumping of a Fluid of Variable Viscosity in a Non Uniform Tube/Channel with Permeable Wall
Authors: Pavan M. , Varun N V S , Purushotham B , Swaminathan N R
Published: January 2012

In this paper, the peristaltic flow of a fluid of variable viscosity in a non uniform tube or channel lined with porous material is studied. This model is suitable for the pumps whose inner surface of the tube is rough, the roughness that arises due to corrugations plays an important role in pumping and in the biological systems such as blood vessels containing tissue region. The flow in the free flow of the tube is governed by Navier-Stokes equation and the flow in the permeable boundary is described by Darcy law. It is observed that the magnitude of peak pressure rise decreases with increase in flow rate and increases with increasing amplitude ratio and increasing Darcy number. It shows that the larger the permeability of porous medium, the greater the pressure rise against which the pump works. It is also observed that as the viscosity decreases the pressure rise increases and for different values of mean flow rate the frictional force exhibits opposite behavior to that of pressure rise. The trough in the frictional force increases with decreasing amplitude ratio and decreases with increasing Darcy number which shows that the increase in permeability of wall causes less frictional forces. The decrease in viscosity makes the peristaltic pump to work under less frictional force.
Statics Phases Numerical Analyzing with Reviewing on Dynamical Phases
Authors: Sayyad Amir Ghafouri
Published: January 2012

The paper is mainly about reviewing on static phases of materials as numeric analyzing with its comparison to dynamical phases. All of analyzes are with based on dynamical and static equilibrium and its mode revision. Also, states changing in materials and their physical – chemical transfer changes have been covered by defined properties in this paper. We use some numeric solutions such as Boltzmann method in analyzing states in this paper.
The Future Development Trend of the Media - Virtual Platform for Performing Arts
Authors: Zhou Jian
Published: January 2012

With the expansion of triple play, the development of future media appeared a new trend, virtual performance platform will be vividly portrayed. The basic information will be necessary for a thorough understanding as soon as possible, so that people know and use.
The Practice and Exploration of "Order-Style" School-Enterprise Cooperation Training Personnel Mode - A Case in Point is Shanghai Communications Polytechnic
Authors: Zhu Jian Liu
Published: January 2012

This article has introduced the practice and exploration of "Order-Style" school-enterprise cooperation training personnel mode in Shanghai Communications Polytechnic. We analysis the background of highly skilled personnel training mode and the case of ASEP program. We draw a conclusion that the "Order-Style" school-enterprise cooperation personnel training mode is a rather effective way in the vocational education.
Research on Query Optimization Technology in Distributed Database
Authors: Wu Bo Zhu
Published: January 2012

Through the in-depth study of the existing distributed database query processing technology, this paper proposes a distributed database query processing program. This program optimizes the existing query processing, stores the commonly used query results according to the query frequency, to be directly used by the subsequent queries or used as intermediate query results, thus avoiding possible transmission of a large number of data, thereby reducing the query time and improving query efficiency.
Research on Vision-Based Web Interface Design
Authors: Liu Jun
Published: January 2012

Through the in-depth analysis of the psychological and physiological characteristics of human visual perception, combined with the technical characteristics of web page itself, the characteristics of visual process, and the aesthetic theories, this paper analyzes the main components of web interface such as page layout, text, color, and animation in detail, and proposes the corresponding design principles, with which to improve the clarity, accuracy, and effectiveness of the visual information transmission in the web page.
Electronic Document Safe Exchange Technology Based on Identity Cryptography
Authors: Hu Yang , Su Lin
Published: January 2012

In this paper, in accordance with the current difficulties in the document and data exchange between different departments of an enterprise, the authors carry on analysis on the identity authentication and authorization problems in the document transmission system at the present time, and design a scheme for the electronic document exchange platform which is based on the cryptography algorithm of identity, and finally put forward an electronic document safe exchange platform based on the identity, which provides a security guarantee for the implementation of the free flow and conversion of the electronic documents among different intranets. In addition, the identity authentication and authorization access control with safety and higher reliability can be realized for the electronic documents transmission system in the applications of network as well.
Generalized Coordinate Transformation for Lattice Boltzmann Equation Using TTM Structured Grid Generation
Authors: Varmazyar Mostafa , Bazargan Majid
Published: January 2012

The standard lattice Boltzmann method has only been applied to the uniform structured grid so far. This limitation can be removed by discretization of the position as well as the velocity space separately. In the present study the generalized coordinate is introduced to transform the lattice Boltzmann Equation (LBE) from physical domain to computational domain. This method uses the finite difference method to discrete the local derivatives in computational space. The central scheme uses to estimate the convection term. The generalized coordinate transformation method introduced in this study has been validated against a sample case study. For this purpose, an unsteady Couette flow between two cylinders has been examined. Good agreement between most of the results of this study and the available data in the literature is reached. The source of some discrepancies between the current results and available data seems to be due to discretization method used in present work to calculate the Jacobian and metrics of transformation matrix.
On the Nörlund Method of Signal Processing Involving Coifman Wavelets
Authors: Yadav Sarjoo Prasad , Yadav Rakesh Kumar , Yadav Dinesh Kumar
Published: January 2012

We consider on real line R a space of signals which are p-power (1 ≤ p ≤∞ ) Lebesgue integrable with weight w(x) = (1 - x)α (1 + x)β , ( α, β > -1) on [-1, 1] R. A subspace χabNvof Xabvis recognized by restricting the types of signals, so that the signals are represented by Jacobi Polynomials. Then by the derivability of Jacobi polynomials, we reach to the conclusion that the signals of the subspace XαβNv can be represented by the Coifman wavelets. The method involves the N rlund summation of Fourier-Jacobi expansions and the properties of Jacobi polynomials in [--1, 1] R
Fault Diagnosis in Transmission Network Based on Optimization Technique
Authors: Cheng Hong Bo
Published: January 2012

The fault diagnosis in power system is treated as a 0-1 integer programming problem use the switching and action information collected by SCADA system, combined with the analysis of protect. A comprehensive objective function has been established and genetic algorithms has been used to solve it. This approach has taken fully advantage of the characteristics of the power system's protection and the network topology configuration information. The optimized method is used to locate the fault as possible as fast. Rigorous theory of the method does not require the introduction of heuristic knowledge, and it can adapt to changes in network topology, and can used both in the single failure of power system and multiple failures in power system too.
Study of Bridge Health Monitoring Scheme Based on GPS Multi-Antenna Technique
Authors: He Zhi Yong , Zhang Jian Jun
Published: January 2012

Ongoing bridge collapse in both at home and abroad, makes people pay increasingly attention to bridge health monitoring. Bridge health monitoring which based on the GPS multiple antenna technology, GPRS wireless communications technology and so on, warning systems including GPS deformation monitoring subsystem, multiple antennas and safety assessment subsystem structure, can achieve bridge deformation data automatic acquisition, processing, analysis and structural safety evaluation and Internet remote transmission, automatic alarm function. Compared with the traditional method, the system has high accuracy and good data continuity, convenient operation, less investment etc, also has good social and economic benefits and broad application prospect.
Digital Voltage Regulator for Aircraft Brushless Synchronous Generator
Authors: Zheng Xian Cheng , Liu Wei Guo , Zhang Xiao Bin , Wang Huan Huan , Jiang Jian Wei
Published: January 2012

According to the design ideas of the traditional analog voltage regulator, hysteresis control method is adopted to regulate the output voltage of aircraft variable frequency generator. Through simulation and test, it is verified that the steady and dynamic voltage performance are in according with the MIL-STD-704E voltage requirements for the generator point of regulation (POR). The digital generator controller is capable to meet the application demand of aircraft power system.
Contourlet-S Texture Image Retrieval System
Authors: Ma Jian Zhong , Chen Xin Wu , Zhong Li Juan
Published: January 2012

Contourlet transform is better in direction information representation than wavelet transform which has been studied in retrieval systems and has been shown that it is superior to wavelet ones at retrieval rate. In order to improve the retrieval rate further, an anti-aliasing contourlet-S transform based texture image retrieval system was proposed. In this system, the contourlet transform was constructed by anti-aliasing non-subsampled Laplacian pyramid cascaded by critical sub-sampled directional filter banks, sub-bands energy and standard deviations in contourlet domain are cascaded to form feature vectors, and the similarity metric used here is Canberra distance. Experimental results show that contourlet-S transform based image retrieval system is superior to those of the original contourlet transform, and non-subsampled contourlet system under the same system structure with almost same dimension of feature vectors, retrieval time and memory needed; and contourlet decomposition structure parameters can make significant effects on retrieval rates, especially scale number. To improve the retrieval rate of this system, kurtosis in each sub-band coefficients can be incorporated in features at the cost of some higher dimension of feature vectors.
Fuzes Terminal Safety Control Technology Based on Wireless Communication
Authors: Li Hao Jie , Zhu Shan , Jiang Xiao Hua , Zhang Xiao Yun
Published: January 2012

To improve fuzes life-cycle safety, the safety state restoration control approach which based on wireless communication is proposed. The restoration instruction is sent by in the battlefield network. The radio transmission system is used to transmit restoration instruction; the restoration function is achieved by the combination of instruction receiving and processing module and fuzes safety and arming devices, which make fuzes change from armed state into re-safety state. The system components and its related modules are designed, and the fuzes transceiver module is debugged. Experiment has been done and the results show that the transceiver module can achieve the intended function.
Issues of One-Terminal Traveling Wave Fault Location Using Wavelet
Authors: Huang Yong , Liu Peng , Li Xiao Ming , Yin Peng , Zheng Xiu Yu
Published: January 2012

One-terminal fault location provides many advantages including its simple principle, high relative reliability, low cost and high precision. But there still be some problems in practice, such as detection of wave front, calculation of wave velocity and identification of source of reflected wave. In order to settle the problems above, decoupling methods, acquisition of traveling wave signals, calculation of wave velocity, key factors influencing precision of fault location and so on are discussed. This paper will be of importance in the research of one-terminal fault location method and further improvement of reliability and precision.
The Design of Family Cars’ Life Cycle Cost Data Warehouse Based on Web
Authors: Chen Xiao Chuan , Liu Jin Fang , Li Qing
Published: January 2012

This paper mainly focused on the life cycle cost collection of manufacturing product based on web and data organization methodology according to business requirements. The general features of manufacturing product life cycle cost were analyzed at first while cost collection objects and cost-related product features were chosen. After that, the software system was developed using .NET and C# web programming technique picking up cost data from credible websites on Internet. Then, life cycle cost data warehouse model was designed via features of cost collection object ending up with the establishment of data warehouse system acquiring cost data as data source. Basic data cleaning and data validation function was developed to meet data quality demand referring to data integrality, data authenticity and data time effectiveness. Finally, an exemplification system of family cars was set up successfully assembling 300 thousand plus records about 3500 car models in last 26 months. This system was proved to work without human manipulation over hours visiting 10 thousand web pages and collecting cost data. This proved the software was valid.
Based on ZigBee Technology Remote Health Care System Design and Research
Authors: Ni Yun Feng , Liu Jian
Published: January 2012

In order to achieve the patient seeking for medical treatment, self-care at home and remote diagnosis, a kind of remote medical care system is researched, which combines with ZigBee, EDGE, Ethernet and ARM9 embedded Linux operation system. The research consists of monitor terminal nodes and home gateway nodes. The monitor terminal nodes are also ZigBee sensor nodes, which can gather every kind of information of the patient and implement artificial alarm and gate control switch etc., The monitor terminal nodes and gate nodes use 802.15.4/ZigBee wireless sensor networks. Based on the basic function of the gateway, and combining with ARM9 Linux systems, ZigBee technology and EDGE communications it supports wired and wireless information transmission. The scheme can meet the needs of the real-time, continuous, prolonged care to patients’ physiological information, it can be applied to Medical Surveillance and sports monitoring.
Optimal Study of Reinforcement on a Karst Slope of Shui-Nan Highway
Authors: Liu Jin Hui , Ding Wan Tao
Published: January 2012

There have potential main-landslide and a undisturbed thin layer of siliceous rock under the left of Karst slope (K133+180), so it is easy to occur creeping slip surface because of gravity while excavating. Proceeding with geomechanics model and according to influence of heavy rainfall, two schemes proposed are analyzed by means of numerical simulation. Both the reinforcement with lattice beam and anchor cable and the reinforcement with anti-slide pile and cable satisfy stability of slope. But the second scheme has higher safety storage coefficient. And the result that the second scheme not only strength anti-shear ability but also change magnitude and trend of shear damage of potential landslide in slope is rewarded. So the restrain effect of the second scheme is better that of the first. According to engineering cost of two schemes, the cost of the reinforcement with anti-slide pile and cable is less than that of the reinforcement with lattice beam and anchor cable. So Karst slope (K133+180) is reinforced with the second scheme and it is stability undergoing strong rainfall. Experience of Karst slope (K133+180) can give useful guidance for similar projects in Karst terrain.
The Error in Eigenvalue and Eigenvector Using Two Methods
Authors: Elnagi E.M. , Huang Qi Bai
Published: January 2012

In this paper tow methods which are Raleigh Ritz and CB used for reducing the model, the methods were applied in beam consisting of two components, each component in beam was divided in substructures, the result of these methods are compare with FEM, the errors in eigenvalue and eigenvector was obtained, these methods were reapplied in the beam with attached spring at the joint point, the errors of classical and non classical were very closed, the Raleigh-Ritz method is so closed to the FEM compare with CB in eigenvalue.
Distribution Calculation of Harmonics and Unbalance in Power System Including Railway Traction Substations
Authors: Wu Jun Yong , Fu Hong Jun , Sun Jian Hua , Zhang Xi Lu , Ji Lu Yu
Published: January 2012

Harmonics and unbalance in Henan power system become more and more serious while a large number of traction substations of high-speed railway are put into operation and traction power increases. In this paper, the distributions of harmonics and unbalance in Henan electric power system are studied. Firstly, three-phase fundamental and harmonic models of the whole system including railway traction substations are built, and a decoupled method of power flow is put forward. Then, the power system harmonic penetration (PSHP) software package is developed, and the power quality of two railway traction substations has been measured. At last, the distributions of harmonics and unbalance of Zhengzhou power network are calculated and compared with the measured results under different traction powers. Some rules of the distributions have been summarized and some advices have been put forward.
Study on 3-D Finite Element Analysis of Earth Dam
Authors: Kang Ying Bin , Kang Ying Bin , Bian Hui Xia , Zhang Jian Wei
Published: January 2012

In this paper, the characteristics of the two software ANSYS and FLAC are analyzed. Using the powerful preprocessing capabilities of ANSYS, the earth dam is analyzed by finite element method. And then, the analysis model by the FISH language is imported into FLAC, with the constitutive model and the completed finite element model, the model analysis and processing are studied. Practical project is dam seepage and stability analysis to verify the reliability of the method.
Fingerprint Matching Algorithm Based on Fuzzy Similarity
Authors: Zhu Gui Liang , Song Rui Fang , Zhang Xiao Qiang , Fan Xue Hui
Published: January 2012

For the low efficiency and high complexity of previous fingerprint matching algorithms, a fingerprint matching algorithm based on the fuzzy close-degree is proposed. It takes the turning point, bifurcation point, the number of ridge line between two points in the fingerprint image and so on as the feature of the object. The new algorithm can improve the accuracy of fingerprint matching. Finally, we point out that the performance of this new algorithm is slightly influenced by the environment factor in pratice, such as the shift and rotation of the fingerprint.
Biosorption of Acid Red R from Aqueous Solution by Acid-Treated Penicillium sp.
Authors: Zhang Li Fang , Chen Ying Ying , Dai Shu Juan
Published: January 2012

The biosorption of Acid Red R, from aqueous solutions by acid treated Penicilium sp. was studied in a batch mode. Operating variables like contact time, pH and initial dye concentration was investigated. The acid treated biomass exhibited maximum dye uptake at initial pH value of 3. The dye adsorption by the biomass was rapid process and the equilibrium was established in 60 min for 50 mg/L of initial dye concentration. Biosorption equilibrium data were fitted very well to the Langmuir as well as to the Freundlich adsorption model. According to the Langmuir model, the monolayer biosorption capacity of Penicillium sp. biomass was found to be 312.5 mg/g for Acid Red R at temperature of 30°C. The results indicate that the acid treated Penicilium sp. biomass can be used as an effective biosorbent to remove Acid Red R from aqueous solution.
Research of E-Commerce Security Technology
Authors: Xie Hong
Published: January 2012

E-commerce is a kind of new business model based on Internet. In recent years, with the rapid development of Internet set off an upsurge of E-commerce, but E-commerce security problems become increasingly prominent and become the main factors of affecting development. This paper analyzes the threat from the technical aspects of the current E-commerce security, and discussed some technology to address security problems.
A Knowledge-Based DFM Advisor for Composite Manufacturing Process
Authors: Cong Jing Jie , Zhang Bo Ming , Yu Jia
Published: January 2012

It is widely acknowledged that decisions made in the early design stages have a greater influence on the final product than those made in the later stages. In the early stages of a conventional design process, composite structures are designed without sufficient consideration being given to limitations of composite manufacturing process. Quite often some of composite designs cannot be produced with special performance requirement or cannot be produced at a reasonable cost. To resolve this drawback and achieve the manufacturable designs for composite product, a knowledge-based decision-making tool was introduced and applied to support the composite design optimization. Firstly, the current development of DFM techniques in composite domain, as well as the main problems in performing DFM for composites is analyzed. Secondly, some of key issues in the composite manufacturing process that should be considered during the composite design process are presented. And then, a knowledge-based DFM system for composite manufacturing process is proposed, focusing on the system decision task, the system framework and the flowchart. Finally, the system is illustrated with a case in autoclave process.
Semi-Supervised Learning for Classification with Uncertainty
Authors: Zhang Rui , Liu Tong Bo , Zheng Ming Wen
Published: January 2012

Support vector machine (SVM) is a general and powerful learning machine, which adopts supervised manner. However, for many practical machine learning and data mining applications, unlabeled training examples are readily available but labeled ones are very expensive to be obtained. Therefore, semi-supervised learning emerges as the times require. At present, the combination of SVM and semi-supervised learning (S3VM) has attracted more and more attentions. In general, S3VM deals with problems with small training sets and large working sets. When the training set is large relative to the working set, We propose a new SVM model to solve the above classification problem by introducing the fuzzy memberships to each unlabeled point. Simulation results demonstrate that the proposed method can exploit unlabeled data to yield good performance effectively.
Fixed-Interval Kalman Smoother for Non-Square Descriptor Systems with Correlated Noise
Authors: Tian Hang Wei , Shi Ying
Published: January 2012

Based on the classical Kalman filtering theory, the state estimation problem is considered for non-square descriptor discrete time stochastic systems. Under Assumptions 1~3, a fixed-Interval Kalman smoother for non-square descriptor systems with correlated noise is given. Some numerical examples illustrate the effectiveness of the proposed algorithm.
An Uniform Cluster-Based Routing Protocol for Wireless Sensor Networks
Authors: Guo Xin , Deng Fei Qi
Published: January 2012

The purpose of routing protocol is to achieve efficient data collection by making use of the limited resource in wireless sensor networks, which prolongs the lifetime of networks. Energy efficiency of the single hop or multi-hop communication mode is researched taking the uneven energy consumption caused by solely single hop or multi-hop mode into account. A hybrid communication mode in which nodes alternate between single hop and multi-hop mode with certain time proposed based on even cluster protocol. The simulation result verifies that hybrid mode provides the better energy efficiency as well as evener energy dissipation.
Wireless Sensor Network Programming Based on IEEE802.15.4
Authors: Si Hai Fei , Yang Zhong
Published: January 2012

Wireless sensor network (WSN) requires a wireless communication technology which is low in cost, low in power and easy to be implemented. IEEE802.15.4 standard is the standard specially designed for low-rate wireless personal area network (LR-WPAN) and aimed at introducing an unified standard for the low-rate interconnection between different devices used by a person or in a home, focusing on low power consumption, low-rate transmission and low cost. Since LR-WPAN which is defined on the basis of standard IEEE802.15.4 is of great similarity with WSN, it could be used as communication platform for wireless sensor. This paper, based on the analysis of LR-WPAN, puts forward the WSN networking scheme based on IEEE802.15.4.
An Effective and Rapid Algorithm for Segmenting CT Sequence Images
Authors: Wang Yang Ping , Dang Jian Wu , Sun Teng , Du Xiao Gang
Published: January 2012

An algorithm of sequence medical images segmen- tation is proposed based on the combination of snakes algorithm and contour interpolation algorithm. Firstly, this algorithm uses snakes algorithm to segment the key layers in which target area change drastically. Then the algorithm calculates the position of reference points in the middle layers with the contour interpolation algorithm. Finally, snakes algorithm is applied again to segment the middle layers. Thus the segmentation of the sequence medical images are accomplished automatically. The experiments showed that the algorithm can obtain the boundary of the desired object from a sequence of medical images quickly and reliably.
More Exact Traveling Wave Solutions for Compound KdV Equation and MKdV Equation
Authors: Cao Dong Bo , Pan Liu Xian , Yan Jia Ren
Published: January 2012

Compound KdV equation and MKdV equation are investigated in the presented work, with the aid of Matlab software, using the trigonometric function transform method and the Wu elimination method, and more exact traveling wave solutions are obtained for compound KdV equation and MKdV equation.
Application Schemes of IEEE1588 Protocol in Communication Network of Electric Power Dispatching
Authors: Ma Qi Yan , Qin Li Jun
Published: January 2012

By reviewing the application status of traditional clock synchronization methods and architectures under different protocols in a comparative way in China, this paper analyzes the application of IEEE1588 protocol in power dispatching automation and puts forward new clock synchronizing schemes in electricity dispatching communication network based on IEEE1588 protocol (or Std. IEC61588) and proposes some futuristic research fields referring to IEEE1588 protocol in power dispatching automation. New schemes have better clock synchronizing precision, featuring in low implementation cost compared with other clock synchronization schemes. At the same time, it will effectively lower system resource requirements, relieve current excessive reliance on GPS clock source, mitigate data fetching and exchange congestion. It will shed light on building domestic power dispatching networks under the PTP protocol as well as constructing smarter power grid both at home and abroad in the future. This work is supported by North China Electric Power University, Sifang & Huaneng Power System Control Co., Ltd and Zhuhai Power Electricity Supply Company in SMART SYNCHRONOUS DEVICE RESEARCH BASED ON IEC61850 AND IEEE 1588 project, which involves a wholesale research in clock synchronization of power dispatching communication networks and developed China’s first set of smart clock synchronization devices, including the clock synchronization handler CSE6000 (briefly introduced in part v) and corresponding kilomega Ethernet switch. Our research results have reached the advanced level at home, and we are applying for a patent protection accordingly.
Research of Implementing Strategies of IPv6 on Edge of Multimedia Communication Networks
Authors: Guo Lian Zhi , Han Guang Ming , Zhang Guo An
Published: January 2012

Multimedia communication networks are charac-terized with links of a lot of communication hosts or digital devices and support more class of business. IPv4 addresses are being used up, IPv6 addresses is imminent. It is a solution to the serious shortage of current IPv4 addresses that taking the existing network as the bearing network, to carry IPv6 on the edge network. In order to achieve compatibility of IPv4 to IPv6 business services, 6to4 and differentiated services are used to solve the QoS problem caused by translation of two types of address.
Wavelet Density Degree of Continous Parameter Stochastic Process
Authors: Dai Ting
Published: January 2012

In this paper,we use wavelet alternation to study continous parameter stochastic process of AR model,obtain the relative properties, stationary properties under the Haar wavelet, and density and wavelet expantion.
The Designed of Automotive Comprehensive Performance Tester Based on Embedded System
Authors: Li Ye De , Wang Shao Qing , Zhang Tao
Published: January 2012

In the paper, we have done substantial analyses and research to be aware of the engine testing requirements and traditional testing means. Basing on this and making use of modern technical in the field of microprocessor, sensor, electronics and software, The testing system of gasoline engine was designed based on embedded system. All kind of signal such as secondary ignition waveform, advanced ignition angle, dwell angle, engine gasoline consumption, engine power, engine rotational speed, cylinder pressure can be collected, disposed and displayed. It can also accomplish the serial communication with a PC and the testing data storage. This design included hardware structure and software system. Tests and experiments show that the system has a good precision. The tester has been applied in some practice.
Anomaly Detection for Equipment Condition via Frequency Spectrum Entropy
Authors: Cheng Wei Dong , Wang Tian Yang , Wen Wei Gang , Wang Heng , Li Jian Yong
Published: January 2012

Some of the critical and practical issues regarding the problem of condition monitoring of mobile equipment have been discussed, and an anomaly detection method without priori knowledge has been proposed. The method involves setting amplitude benchmark via spectrum amplitude in normal condition and obtaining the maximum entropy value in abnormal condition. The condition identification is achieved through estimating the amount of anomaly information in spectrum, and a measure of anomaly condition is given by the anomaly degree derived from entropy value dividing the maximum value. The sensitivity, stability and computation load of the method have been also discussed, and the method is validated on an experimental test-bed that the test bearings with different fault diameter support the motor shaft.
A Measurement-Based Robust Adaptive Kalman Filtering Algorithm
Authors: Chang Yan Hong , Zhang Hai , Zhou Qi Fan
Published: January 2012

In the case that the accuracy of standard kalman filter (SKF) declines when the noise statistical characteristics are unknown or changing, a measurement-based adaptive kalman filtering algorithm (MAKF) is presented. Based on the contrastive analysis of measurement characteristics of different measurement systems, MAKF is put forward to estimate adaptively the measurement noise variance R by co-difference measurement sequences. Simulation is performed by applying this algorithm to the GPS/INS integrated navigation system, the results show that MAKF can track the GPS measurement noise in real time on condition that the GPS measurement noise is unknown or changing, and the filtering accuracy and robustness are superior to those of SKF and an improved Sage-Husa adaptive kalman filtering algorithm.
Numerical Analysis of Delamination Growth in Laminated Composites under Buckling Behavior
Authors: Ramezani Mohammad Kazem , Mohseni Shakib S M , Soltani H
Published: January 2012

In this paper, a delamination growth analysis on composite panel containing embedded delamination has been performed using a three-dimensional finite element model. The effects of the delamination on the local buckling load and delamination growth are studied by using Hashin’s 3D failure criteria via UMAT user’s subroutine of ABAQUS FE program. A new proposed model shows enhancement of the accuracy of the results which showed a good agreement with available experimental data.
Multi-Layers Agorithm of Grid Resource Discovery
Authors: Yuan Jing
Published: January 2012

There are a great deal and various types of resource in grid, it is important for ensuring share of grid resource and cooperative working to discovery resource efficiently. After two kinds agorithm of resource discovery adopted in grid are analysed, multi-layers resource discovery agorithm is brought up in this text. Time complication and space complication are compared among the three alorithm in theory, and it test the performance of the three agorithm at last.
Design and Instruction Solution of an Optimal Guidance Law for Ship-Air Missile beyond Visual Range
Authors: Zhao Yong Tao , Hu Yun An
Published: January 2012

For the case of ship-air missile intercepting the low target beyond visual range by ship-ship coordination, the instruction solution model was presented and an optimal guidance law was designed considering the effect of the curvature of the earth. In the midcourse and terminal guidance segment, the optimal guidance law was designed through applying the concept of the pseudo control variable and the theory of the linear quadratic optimal control. The information of the target was described in the launch coordinates through coordinate transformation to realize the instruction solution for the designed guidance law. The simulation results show that the model of the instruction solution is correct and the designed guidance law is feasible.
Spatial Data Topology in GIS Database
Authors: Sun Yun Peng
Published: January 2012

Topology and its various benefits and functionality are fairly well understood within the context of 2D Geographical Information Systems. We summarize the principle of common 2D topology and the implementation of GIS databases. Existing topological frameworks and data models as a staring point to guide the review process, three key areas were studied for the purposes of requirements identification, namely existing 2D topological systems. However requirements in 3D have yet to be defined, with factors such as lack of familiarity with the potential of such functionality of 3D systems impeding this process. In this paper, we identify and review the requirements for topology in three-dimensional (3D) applications. Requirements for topological functionality in 3D were then grouped and categorized.
Field Analysis of Ridged Waveguides Using Transfer Matrix
Authors: Zong Wei Hua , Shao Ming Xin , Qu Xiao Yun
Published: January 2012

The mode matching method is applied to analyze generalized ridged waveguides. The tangential fields in each region are expressed in terms of the product of several matrices, i.e., a functional matrix about x-F(x), a functional matrix about y-G(y) and a column vector of amplitudes. The boundary conditions are transformed into a set of linear equations by taking the inner products of each element of G(y) with weight functions. Two types of ridged waveguide are calculated to validate the theory. Several new modes not reported in previous analysis are presented.
Hybrid OCDMA over WDM System Using Modified Double Weight (MDW) Code for Optical Access Network
Authors: Ahmed N. , Aljunid S. A. , Fadil Hilal A. , Ahmad R. B. , Rashid M.A.
Published: January 2012

In this paper a hybrid optical code division multiple access (OCDMA) over wavelength division multiplexing (WDM) network is proposed to support large number of subscribers. The system combines two different techniques, namely OCDMA and WDM for supporting many subscribers simultaneously. We used modified double weight (MDW) codes as a signature address in designing the system because this code can accommodate more number of simultaneous active users under considerable standard bit error rate (e.g. ≤ 10-9). The induced MDW code for hybrid system can eliminate multiuser interference fully and increase the bit-error-rate performance compared to other codes at the same time. We ascertained by simulation results that the proposed scheme provides very good performance and enhance the network capability. Therefore, this system can be considered as a promising solution for the next generation optical access network.
Investigation the Effect of Core Type on the Leakage Inductance in the High Frequency Transformers
Authors: Farahani Hassan Feshki , Khalili Mohammad
Published: January 2012

One of the most important problems in high-frequency transformers is leakage flux which is inevitable and can lead to increase the leakage inductance. The leakage inductance has different effects on pulse transformers `operation which among them the effect on rise time can be mentioned that can change the output waveform. Although inductance value can not be zero, it can be reduced to some extent. One of the ways is to choose the core type. According to core type, windings in transformer can be winded in a way that results in leakage inductance reduction. In this paper, two kinds of transformers with two different cores are modeled and simulated in ANSYS which are equal in transforming power and different in windings area. Also in this paper, the effect of core type on leakage inductance value is studied by using the obtained results.
An Efficient Genetic Algorithm for Solving the Order Allocation Problem
Authors: Wang Jen Ya , Cheng Ching Mei , Tu Sheng Chung
Published: January 2012

This paper aims to solve an order allocation problem in supply chain management (SCM). In this problem, the price fluctuation over consecutive time periods is known beforehand. Based on that assumption, clients can arrange their orders in advance to minimize the costs incurred in SCM, e.g., purchasing cost or inventory holding host. However, order allocations are subject to demand volumes, time-varying costs, suppliers’ capacities, inventory levels, and inventory costs, etc. It is difficult to make a correct decision immediately. With so many factors affecting the decision-making, traditional methods (e.g., dynamic programming) is very time-consuming. Therefore, a genetic algorithm cooperated with a local search is proposed. The experimental results show that the problem can be solved efficiently and near optimally.
A Game Theoretic Approach to Thwart Selfishness Attack in MANET
Authors: Choudhury Prasenjit , Pal Anita , Gupchup Anjali , Budholiya Krati , Banerjee Alokparna
Published: January 2012

Ad-hoc networks are attractive, since they can provide a high level of connectivity without the need of a fixed infrastructure. Nodes that are not within the same transmission range communicate through multi-hops, where intermediate nodes act as relays. Mutual cooperation of all the participating nodes is necessary for proper operation of MANET. However, nodes in MANET being battery-constrained, they tend to behave selfishly while forwarding packets. In this paper, we have investigated the security of MANET AODV routing protocol by identifying the impact of selfish nodes on it. It was observed that due to the presence of selfish nodes, packet loss in the network increases and the performance of MANET degrades significantly. Finally a game theoretic approach is used to mitigate the selfishness attack. All the nodes in MANET should cooperate among themselves to thwart the selfish behavior of attacker nodes.
Service Ranking Systems for Cloud Vendors
Authors: Choudhury Prasenjit , Sharma Monalisa , Vikas K. , Pranshu T. , Satyanarayana V.
Published: January 2012

With the emergence of Cloud Computing in recent times, there has been a phenomenal growth in the number of Cloud Vendors (CV) providing their services. As far as the customers are concerned, with so many options available on their plates, it becomes increasingly complex and difficult to choose the right Cloud Vendor for their diverse needs. In this paper, we propose a Static Service Ranking System (SRS) with priorities defined by us in general as well as a Dynamic SRS which identifies the specific user’s priorities to rank the Cloud Vendors in order of their needs. Each factor in the priority is given a weightage accordingly and the CV rankings are calculated based on it.