bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Building Methods of Hierarchical Structure in Text Classification
Authors: Xiong Yun Bo
Published: September 2012

There always exists semantic hierarchical relationship in text classification. Therefore, it's inevitable to organize documents in accordance with the hierarchical structure. Based on confusion matrix, this paper attempted to adopt two different algorithms including hierarchical clustering and confusion category to build hierarchical structure of document category, and finally made use of hierarchical classification to carry on experiment, results of which showed that the confusion category strategy is superior to hierarchical clustering strategy and recall and precision of flat classification are both improved.
A Novel Differential Evolution Algorithm for TWET-NFSSP with SDSTs and RDs
Authors: Qian Bin , Zhou Hua Bing , Hu Rong , Wu Li Ping
Published: September 2012

A novel differential evolution (DE) algorithm, namely DE_TWET, is presented to deal with the no-wait flow-shop scheduling problem (NFSSP) with sequence-dependent setup times (SDSTs) and release dates (RDs). The criterion is to minimize a total weighted earliness/tardiness (TWET) cost function. The presented algorithm is a hybrid of DE, problem’s properties, and a special designed local search. In DE_TWET, DE is adopted to execute global search in the solution space, and the problem’s properties are utilized to give a speed-up evaluation method and construct the local search, and the special local search is designed to enhance the local search ability of DE. Experimental results and comparisons demonstrate the effectiveness and robustness of the presented algorithm.
The Research of Technology of Bloom Filter Realization in Hardware
Authors: Guo Teng Fei , Mao Jian Biao , Sun Zhi Gang
Published: September 2012

Bloom filter is a space-efficient data with a certain probability of false positive . We present a reusable hardware implementation framework, define a module interface to provide users with a customize module, and introduce the constraints of hardware resources in the analysis of false positive rate against the traditional Bloom filter hardware design and analysis of the Bloom filter false positives. Finally, we make verification and analysis of our design combined with the the NetMagic platform.
Design and Implementation of Multi-Channel Data Acquisition Based on μC/OS-III
Authors: Wang Xiao Kai , Guo Gai Zhi , Wang Zhong Hua
Published: September 2012

This paper achieves task scheduling of the multi-channel data acquisition based on the operating system of μC/OS-ⅢIt realizes transplanting the operating system of μC/OS-Ⅲ on DSPIC30F6014 to acquire the data of the voltage current temperature and power through )The experiment shows that it can acquire and process multi-data timely, then displays the information on the LCD .
Electronic Borrow-Back System of Colleges and Universities Digital Library Based on RFID
Authors: Li Hong Wei , Dou Zhi Wu
Published: September 2012

In the network era, how to use the fast, accurate, detail and automation features of the network to provide efficient, high quality service to become the new problems faced by Universities library. On the basis of researching the characteristics and application of RFID technology, put forward to the electronic borrow-back system of colleges and universities library combining RFID technology and the electronic commerce mode. A detailed analysis of the system structure, function, principle, information flow and the implementation of system was given. The actual application validated that the system greatly improves the service efficiency, quality and level of colleges and universities library, which has the important meaning to the digital library integration development.
Clustering Algorithm of Wireless Sensor Networks Based on Residual Energy
Authors: Ma Chang Lin , Ruan Yuan
Published: September 2012

In order to improve the lifetime and throughput of wireless sensor networks under the limited power, an improved clustering algorithm is proposed in this paper on the basis of LEACH protocol. The energy factor is considered in this algorithm. The residual energy of all sensor nodes is referred to select cluster-heads of wireless sensor networks. The new clustering algorithm effectively improves the energy efficiency, throughput and lifetime of wireless sensor networks. The results are proved by simulations.
Research on Network Traffic Modeling and Applications
Authors: Ma Yong Li , Qian Zong Jue , Shou Guo Chu , Hu Yi Hong
Published: September 2012

With the popularity of internet and the growing of applications in recent years, network traffic characteristics are also undergone a great change. The traditional flow models are unable to meet the current traffic. Therefore, it is done to study the law of current traffic model, to propose these models of service traffic characteristics and to explore the applications of these models in practice.
Based on B/B/S Virtual Network Storage System Design and Implementation
Authors: Xie Chuan
Published: September 2012

In view of the network application on the network storage requirements proposed, based on the B/B/S network storage management system concept. The system can network on each kind of heterogeneous storage server organic organization, to provide users with extensible virtual storage space. The network user can access to any network terminal the virtual storage space, save data and realize the application reads the automatic transfer.
A Lightweight Framework for Trust Cloud Software Development
Authors: Liu Xiao Li , Quan Yu Juan , Jiang Wei Zhen
Published: September 2012

Trust is particularly important for cloud service. In this paper, we introduce a lightweight framework for trust software development in cloud computing by comparing the differences of web service and cloud service. Formal method is used to ensure the correctness of the whole process. Furthermore, the theory implementation is simply discussed, including the related research results which support our framework.
Simulation and Analysis of OSPFv2 Neighbor Authentication Based on GNS
Authors: Li Xiao Hua , Zhao Xian Gang , Zhang Ren Long , Xu Shu Yan , Yang Li
Published: September 2012

Routing information release is a kind of promise from the router for network reachability. Illegal routing information may have disastrous effects on the normal work of the network. Open Shortest Path First (OSPF) protocol provides authentication methods to protect the authenticity and integrity of the routing traffic. This paper describes two authentication types of OSPFv2, analyzes the realization mechanism and packet header format of each authentication respectively. Based on GNS3, a typical network topology was designed, and with the aid of it we carried out functional verification and security analysis. The simulation can provide a reference for building an OSPF network. Experimental results show that the configuration of OSPFv2 routing authentication can effectively prevent the router from receiving unauthorized or malicious routing updates, thereby improving network safety.
Study on the "Flexibility" Development Method
Authors: Gao Yu , Feng Xiang Zhong
Published: September 2012

In software engineering field, it is an important study topic that building more suitable and effective development method. Although there are many type of traditional development methods, and in past development activities they achieved great success, but they lack "flexibility". With the complexity and variability gradually increased in software development process, due to the lack of "flexibility", the ability of traditional development methods will be restricted. In order to enhance the ability of development method, concept of "flexibility" development method has been proposed, and some problems related to "flexibility" development method have been discussed. Such as that: some factors making the "flexibility" development method to appear, some technology related to "flexibility" development method, some strategy constructing "flexibility" development method, future development trends. Through these discussions, study work of software engineering theory is promoted.
A Novel Anonymous Authentication Scheme in Ad Hoc Networks
Authors: Wang Ji Zhi , Wang Ying Long , Xu Shu Jiang
Published: September 2012

Many authentication protocols in ad hoc networks are identity based, which means that in order for one node to trust another, it needs to know the other node’s identity. Hence there exists an inherent trade-off between trust and anonymity. We propose an anonymous authentication scheme, where each node, instead of using its real identity, generates a dynamic pseudonym using a one-way hash function. With the help of a CA offline, the scheme can realize the authentication procedure based on discrete logarithms problem. We analyze the security and the anonymity in the scheme, which shows that it is very valid.
A Dynamic Resource Management Scheme on P2P-Based Grid Systems
Authors: Tan Yun Song
Published: September 2012

Efficient multi-dimensional data indexing mechanism is one of the fundamental requirement for Grid computing systems. Peer-to-peer organization of Grid resource discovery approach would have several desirable features, including high scalability, high reliability, self-organization and self-healing. Most of the research in this area only considers static resource.In this paper, we describe a tree vector indexing scheme for Grid systems, in order to support range queries and at the same time preserve the important attributes of grid systems.
Design and Application of Information Management System Based on ASP.NET
Authors: Zhao Guang , Huang Hong Yuan
Published: September 2012

With ASP.NET and ADO.NET technologies the staff training information management system was developed, realize the network office automation, make the information management betimes, and improve the work efficiency. The function peculiarity and design project of the system were discussed deeply, and put forward a new method of ASP.NET application.
Research the Systems Architecture and Technology of Wisdom Community Based on the Internet of Things
Authors: Zhu Shun Bing , Du Chun Quan , Niu Miao Miao
Published: September 2012

The wisdom community is the basic unit of the smart city, is a set of urban management, public services, social services, residents’ autonomy and mutual aid services in one of the new technology applications. This article analyzes the current situation and existing problems of the wisdom community, then described the Internet of Things architecture, equipment features, community cloud computing platform and structure, the last detailed analysis of the wisdom community features and community network video intercom, home security, appliance control, non-contact card access control, card consumption management, community security, community e-service technology and other technical content and features.
The Interactive Strategy of B2C E-Commerce Website
Authors: Yang Lu Ming , Li Tao , Li Juan
Published: September 2012

With the fiercer competition of B2C e-commerce websites, interactivity has gradually caught the attention of businesses, which signifies the importance of studying the method to improving web interactivity so as to provide better services for customers. Based on the supposition that the proper setting of interacting way can improve interactivity effectively, this paper discusses the proper methods from the aspects of interactivity between the website and customers, the interactivity between the service client and customers and the interactivity among customers according to the relevant theories of Applied Statistics. Through the analysis on the comprehensive information of the interactivity of the 100 B2C e-commerce websites based on the judgment sampling of non-probability, the systematic, comprehensive interactive strategy of B2C e-commerce website is proposed.
Development of Customer Relationship Management System in E-Commerce Based on BP Neural Network
Authors: Zhou Mei Ling , Hao Jing Jing
Published: September 2012

BP neural network can learn and store a lot of input - output mode mapping, without prior reveal the mathematical equations describe the mapping. The model based on BP neural network algorithm is constituted by an input layer, output layer and one hidden layer, three-layer feed forward network. CRM is to acquire, maintain and increase the methods and processes of profitable customers. The core of CRM is the customer value management, customer value; it is divided into the de facto value, potential value and model value. The paper presents development of customer relationship management system in e-commerce based on BP neural network. The experiment shows BP is superior to RFCA in CRM.
Vibration Analysis Based Feature Extraction for Bearing Fault Detection
Authors: Liu Jie , Yang Chun Sheng , Lou Qing Feng
Published: September 2012

Rolling element bearings are widely used in various rotary machines. Most rotary machine failures are attributed to unexpected bearing faults. Accordingly, reliable bearing fault detection is critically needed in industries to prevent these machines’ performance degradation, malfunction, or even catastrophic failures. Feature extraction plays an important role in bearing fault detection and significant research efforts have thus far been devoted to this subject from both academia and industry. This paper intends to provide a brief review of the recent developments in feature extraction for bearing fault detection, and the focus will be placed on the advances in methods for dealing with the nonstationary characteristics of bearing fault signatures.
The Comparison and Selection of the Solutions for Liuyang River Tunnel’s Inclined Shaft Entering to the Main Hole and the Key Points of Construction
Authors: Xiang Zhi Min , Yuan Ren Ai
Published: September 2012

The construction geological condition is complex in the transition section from the inclined shaft to the main hole. There are two kinds of construction schemes. After the comparison of the advantages and disadvantages of the two different construction schemes, it has selected the construction scheme of the rectangular pilot tunnel vertical to the main hole. This paper solve the construction problem of the transition section from the inclined shaft to the main hole of large cross section tunnel of passenger dedicated line under complicated geological conditions. According to the previous research results, the method can be used to large-cross section tunnel. The scaffold design and auxiliary construction measures is detailed. Compared with the expected duration, it completed the transition construction ahead of time with the speed superior to the ones of other similar works, and forming a safe and efficient construction situation.
Calculation of Cylinder-Flat Gauge under 0.56 mm Heel-Toe Difference Flat with 3 mm-Long Plane Ground on Setover
Authors: Li Yan Hong , Cao Ji Peng , Sun Peng Zi
Published: September 2012

The cylinder-flat gauge of 0.56 mm heel-toe difference (HTD) flat with 3 mm-long plane ground on setover was calculated by the method of geometry. The change curves of cylinder-flat gauge were given by using MATLAB software under three conditions of 0.56 mm HTD flat, 0.56 mm HTD flat with 3 mm-long plane ground on setover, and 0.49 mm HTD flat. It conclude that the average gauge under 0.49 mm HTD adopted is smaller than that under 0.56 mm HTD flat with 3 mm-long plane ground on setover, and 0.49 mm HTD is realized easily in processing.
Pitching Dynamic Response of Variable Sweep Wing Aircraft
Authors: Xu Lai Bin , Yang Shu Xing , Mo Bo
Published: September 2012

The dynamic response of Variable Sweep Wing Aircraft (VSWA) with the wing sweeping is presented. The center of gravity (cg) of the aircraft, location of each wing partition , and moment of inertia alter significantly due to the wing morphing, resulting in considerably change of the dynamics of the aircraft. The extended equations of motion (EOMs) suitable for morphing wing aircraft are derived. Compared with the traditional EOMs, there are 4 additional forces and moments exhibiting in the extended EOMs due to the wing morphing. The results show that the additional forces and moments can affect the flight control considerably.
High Precision Modeling and Identification of the Near Transition Sliding Friction in a Mechanical Stage
Authors: Lin Kuan Chen , Yang Shyi Kae
Published: September 2012

Mechanical stages are common but very important tools to all the fields in the modern world. However, with the increasing demand for high-precision stage capability, it is found that the frictional characteristics play a more vital role for the stage motion and are worth of a careful investigation. Therefore, the problem of dynamic behavior and parameter identification for the sliding friction in a normal mechanical stage system operated in long range is studied in this paper, especially for the near transition regime between the presliding and sliding friction behaviors. A dynamic model and its corresponding identification method are proposed such that all the system parameters can identified from the derived relationships in a systematical way. The results show that the proposed method indeed works effectively with the experimental data regardless the complex composition and unevenly distributed contact conditions of the actual stage system.
Design of Servo Peristalsis Dispenser Based on Motion Controller and Touch Screen
Authors: Ren Gong Chang , Ye Qing , Wang Yong Fei , Chen Bo
Published: September 2012

In view of disadvantages of domestic dispenser in control system and operation platform, we propose to take touch screen as human machine platform and adopt SMC6480 independent motion controller to control 3-axis linkage peristalsis dispenser. We devise system construction of peristalsis dispenser from hardware and software. Meanwhile, human machine interface is designed by touch screen
Three Dimensional Finite Element Interference Contact Analysis about Cone Screw and Bush of Opposed Biconinal Cone Screw High-Pressure Seawater Hydraulic Pump
Authors: Wang Xin Hua , Cao Xiu Xia , Sun Shu Wen , Gao Yan
Published: September 2012

The main components of the opposed biconinal cone screw high-pressure seawater hydraulic pump is the rubber bush and metal cone screw, and the interaction of the bush and cone screw is one of the main factors affecting the novel pump performance. The deformation and stress of the bush and cone screw under the initial interference is analyzed by the nonlinear finite element analysis. The analysis shows that: under the effect of the initial interference, large displacement is present to the radial surface of the cone screw, and the displacement of the radial surface mainly affects the displacement vector sum of the cone screw, and the deformation decreases gradually from the middle to the ends of the cone screw, while the cone screw is bending; the deformation in three direction of the bush is close to each other, but the location of the maximum displacement in each direction is different; with the shrink range increasing, the deformation of the cone screw and bush increases, but the deformation of the cone screw is much smaller than that of bush, so the deformation of the bush mainly affects the seal between the cone screw and bush, and the shrink range between the cone screw and bush decreases because of the deformation of the bush. Over the role of the interference force, the maximum von mises stress of the cone screw is an order larger than that of bush, and the maximum von mises stress both increases with the shrink range increasing; although shrink range is different, the location of the maximum von mises about the cone screw and bush is the same.
Organic Modification and Ball Milling of Bentonite and its Retention Properties
Authors: Chen Wei , Li You Ming , Li Nan , Chen Dong Hai , Wan Xiao Fang , Chen Wei Ming , Tang Wu
Published: September 2012

Stearyltrimethyl ammonium bromide(STAB) was used for organic modification of bentonite and then ball milled the modified bentonite. The organically modified bentonite was analyzed by FT-IR and XRD. The results show that the stearyltrimethyl ammonium bromide has been interalated into the layers of bentonite. The layer distance of the bentonite is increased from 1.256nm to 2.694nm. The appropriate experimental conditions of interplanar spacing increasing were the dosage of STAB 40%, reaction time 4h, temperature 75°C. The ball milled organically modified bentonite was analyzed by SEM. The results show that the particle mainly reach submicron to nanometer when ball mill 2h. The particle size distribution range is from 100nm to 500nm. Ball milled organically modified bentonite/ cationic guar gum(CGG) can improve retention rate of paper-process reconstituted tobacco pulp obviously than organically modified bentonite/CGG because of smaller grains and better unigormity of ball milled bentonite.
Dynamics Analysis and Testing of Transonic Flows in Main Nozzle of an Air-Jet Loom
Authors: Shen Dan Feng , Zhao Hui
Published: September 2012

On the basis of fluid dynamics, this paper deduced the pull force formula of main nozzle on air-jet loom and introduces a method of experiment to test the airflow velocity in the exit of nozzle. The effect of different parameter structure of main nozzle on the pull force had been studied. It was observed that the inlet of thread tube was a bottleneck of main nozzle and the main development of main nozzle lengthens the thread tube. The theoretical findings were found to be in good agreement with experiment finding and this verified that the formula for pull force was reasonable.
Research and Development on the Hydraulic Design System of the Guide Vanes of Multistage Centrifugal Pumps
Authors: Zhang Qi Hua , Xu Yan , Shi Wei Dong , Lu Wei Gang , Zhou Ling
Published: September 2012

To improve accuracy and efficiency of the hydraulic design of the guide vanes of the multistage centrifugal pumps, four different-structured guide vanes are investigated, and the design processes of those systems are established. The secondary development platforms of the ObjectArx2000 and the UG/NX OPEN are utilized to develop the hydraulic design systems of the guide vanes. The error triangle method is adopted to calculate the coordinates of the vanes, the profiles of the vanes are constructed by Bezier curves, and then the curves of the flow areas along the flow-path are calculated. Two-dimensional and three-dimensional hydraulic models can be developed by this system.
Dynamic Analysis of a New Rotary Steerable Drilling Tool
Authors: Wang Li Na , Niu Wen Tie , Fu Sheng Li , Li Hong Tao
Published: September 2012

This paper presents a novel Rotary Steerable System which used a universal joint to avoid the alternating press in the drilling process. The mechanics model is established on the basis of simplifying structure and supporting of rotation axis in directive RSS. Dynamic model of the offset mandrel is derived by means of Hamilton principle, which could be used to control system design. Location of offset force acting on the offset mandrel is optimized and vibration equation of universal joint is deduced by means of transfer matrix method, then the results of natural frequency are compared with the calculated results of the finite element to verify the kinetic model. Both dynamic model and simulation analysis are expected to provide useful good guidance for the design of control system, detail design, structure optimization and the dynamic vibration of the RSS.
Reconfigurable Image Acquisition in the Machine Vision Inspection System
Authors: Zhao Da Xing , Peng Lei , Sun Guo Dong , Feng Wei
Published: September 2012

Since camera drivers provided by the different manufacturers are not compatible, machine vision systems must be redeveloped according to specific camera. It is great significant to work out the problem, which could improve the versatility of the inspection system. The reconfigurable technology has applied to image processing, image matching and so on. Hence, in the paper the reconfigurable image acquisition module is designed, which reserves some interfaces for the image detection module. Citing the nonel visual inspection system as an example, adopting DALSA and BASLER cameras to acquire the images, the images was displayed properly. Therefore, the compatibility of the image detection system has been improved greatly.
Large DOF Coupler/Draft Gear System Models for Rail Vehicles
Authors: Wu Qing , Luo Shi Hui , Xu Zi Qiang , Ma Wei Hua , Wei Chong Feng
Published: September 2012

Aiming at accurate predictions of coupler/daft gear systems' dynamic behaviour. Based on the analysis of structural and kinematic relations of two typical systems, hysteretic nonlinear draft gear models and 9DOF (Degree of freedom) detailed coupler/draft gear system models were developed. Frictional pairs on coupling surfaces and coupler tails along with interactive aligning shoulder models were integrated into system models. Utilizing two detailed locomotive models simulations were performed on a section of special track to validate the rationalities of coupler/draft gear system models. Simulation results indicate that all parts in coupler/draft gear system models can fullfill their roles, and the system models themselves can reproduce the run-time behaviour of coupler/draft gear systems with high reliability and accuracy.
Machining of Al/SiCp Metal Matrix Composites at Low Temperature Heating Prior to Machining
Authors: Dabade Uday , Joshi Suhas
Published: September 2012

The utilization of Al/SiCp metal matrix composites in different engineering fields has undergone a tremendous increase due to its tailor-made properties that can be achieved by varying the size and volume fraction of reinforcement. However, the difficulty in machining of metal matrix composites (MMCs) arises not only from the excessive wear of the cutting tools but also from fracturing of the reinforcement particles on machined surfaces that leaves behind adhered particle fragments, pits and cavities. These characteristics in machining of MMCs tend to adversely affect the machined surface quality/integrity. Hence, some attempts are made to improve the machinability of MMCs and surface quality by hot machining using wiper inserts. Experimental results indicate that the moderate heating of Al/SiCp composite material prior to machining (60-90°C) reduces the machining forces and improves the surface quality by minimizing, debonding, fracture and pull-out of reinforcement particles from the matrix material.
Development of New Prototype Interactive System for Casting Defect Identification and Analysis
Authors: Pandit Harshwardhan , Mangarulkar Amrita , Dabade Uday
Published: September 2012

Each casting produced in a foundry is a research experiment, since no two castings have the exactly same values of their geometric, material and process parameters. By the time, castings are inspected the link to the originating (influencing) parameters is lost, since they are never systematically recorded and correlated with quality characteristics. Thus, a valuable opportunity to improve casting quality is lost. In this work, we present a systematic approach for classifying casting defects by correlating them with the originating parameters; the proposed classification approach is hierarchical and more comprehensive. The defects are classified under geometry, integrity and property related defects. The defects analysis system includes an expandable library of images to facilitate correct identification of a given defect, and presents the various causes and remedies based on the user inputs. The entire system is being implemented in a web-based environment for wide access to practicing foundry engineers.
Simulation of Satellite Digital Video Broadcasting via Variable Frequency Based on Simulink
Authors: Li Nan , Jiang Bo , Liu Jing Yong , Zhang Wei , Chen Xing Xing
Published: September 2012

The traditional cable television broadcasting, digital mobile television broadcasting and the direct satellite video broadcasting ensure the television services of people’s daily life. Owing to digital broadcast satellite, also known as the digital video broadcasting (DVB) protocol applying terminal, direct-to-home television services with an outdoor dish of one meter come true. In order to accommodate the requirements of various broadcasting services, the DVB-S.2 protocol provides more efﬁcient technology details. The LDPC codes concatenated with BCH codes achieve high performance near the Shannon limit and have low encoding and decoding complexity. Some high efﬁciency modulation methods are introduced into theDVB-S.2, such as QPSK, 8PSK, 16APSK and 32APSK. The adaptive coding and modulation (ACM) according the channel performance (E s /N 0 ) is applied in the DVB-S.2 technology. In order to preventing the burst disturbance, satellite broadcasting via variable frequency band is presented in this paper to ensure the quality of services. The DVB-S.2 via variable frequency is simulated based on Matlab/Simulink in this paper, and the simulation implements the video streams coding and modulation, ACM and frequency change with the channel performance.
Implementing Efficient Management and Security of Removable Storage by FVM
Authors: Ma Jun , Ren Jiang Chun , Wang Zhi Ying , Wu Jiang Jiang , Cheng Yong , Mei Song Zhu
Published: September 2012

The security usage and management of removable storage devices has become a vital problem for enterprises and individuals. However, the required strict security policies for preventing unauthorized access to sensitive data raise the decrease of usability and flexibility. The main problem rests on the binding between security and application domains which stifles the initiative of the devices on themselves. This paper presents TRS, an efficient active architecture that binds a feather-weight virtual machine (FVM) to the removable storage device. It is designed based on an inside-bound smart card as well as the chip operation system (COS) which builds a trust channel between the FVM and the device. The FVM is set up by a trust chain and provides isolated usage environment for process accessing the device which prevents the obtained data from leakage. Finally, we implement a USB flash disk we call as UTrustDisk based on the hardware structure of Amordisk which is a security product of Nationz Technologies Inc. The results show the average overhead of read and write is 7.5% and 11.5%.
Contourlet-S Retrieval Algorithm Using Absolute Mean Energy and Kurtosis Features
Authors: Li Xiang Ying , Xue Rui , Chen Xin Wu , Luo Wei
Published: September 2012

Contourlet transform has better performance in directional information representation than wavelet transform and has been studied by many researchers 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, a contourlet-S transform based texture image retrieval system was proposed in this paper. In the system, the contourlet transform was constructed by non-subsampled Laplacian pyramid cascaded by critical subsampled directional filter banks, sub-bands absolute mean energy and kurtosis in contourlet-S domain are cascaded to form feature vectors, and the similarity metric is Canberra distance. Experimental results on 109 brodatz texture images show that using the features cascaded by absolute mean and kurtosis can lead to a higher retrieval rate than the combination of standard deviation and absolute mean which is most commonly used today under same dimension of feature vectors. contourlet-S transform based image retrieval system is superior to those of the original contourlet transform, non-subsampled contourlet system under the same system structure with same length of feature vectors, retrieval time and memory needed, contourlet-S decomposition structure parameters can make significant effects on retrieval rates, especially scale number.
Synergy Effect of Knowledge Sharing between the Nodes in Network Organization
Authors: Ruan Ping Nan , Han Peng Hui
Published: September 2012

Knowledge sharing was the most important way to obtain resources for the nodes in the network organization. The synergy effect generated from knowledge sharing could rich the network organization resources, and it helped maintain competitive in the network organization developing process. This paper analyzed the impact of the knowledge sharing on the nodes, and the factors that affected the knowledge sharing synergy effect. Finally, a synergy effect function was proposed. Through analysis, we got that the nodes in the network organization should actively take participate in knowledge sharing and improve their own synergy learning ability. It could help enhance the communication and reduce the difficulty of knowledge sharing, then improve the overall performance of the network organization.
Layered TPMP Decoding for QC-LDPC Codes
Authors: Zhao Ling , Hou Yi , Liu Rong Ke
Published: September 2012

This paper presents a layered two-phase message passing (L-TPMP) decoding algorithm for general quasi-cyclic low-density parity-check (QC-LDPC) codes, which not only achieves high hardware utilization efficiency (HUE), but also brings in great memory block reduction. The main idea is to split the check matrix into several layers row-wise, then to perform the message passing computations sequentially layer by layer and the two-phase computations of different layers can be overlapped performed. There is no constraint to layer the check matrix hence L-TPMP decoding can be used in both high and low throughput applications for any QC-LDPC codes. The overall architecture of L-TPMP decoder is also discussed and an efficient memory arrangement scheme is proposed to reduce the memory blocks. For the (3048, 7493) LDPC code selected form Chinese DTTB, L-TPMP decoding saves over 85% memory blocks comparing with the conventional TPMP decoding, and the HUE of the L-TPMP decoder is 0.97.
Realization on Cycloid Tooth Profile for CNC Processing
Authors: Zhang Chun Liang , Wang Yuan Yuan
Published: September 2012

The machining difficulty of cycloid disk has limited the extensive application of Cycloidal-pin gear planetary mechanism. The conventional machining methods and devices are a main reason. A new method is provided through a 3D software simulation and CNC numerical machining to assure the machining precision of cycloid disk and reduce the machining difficulty. The detail comparisons with old methods are analysized. The modeling and path stimulation are expressed. The NC programs are output. The method can largely reduce the production difficulty of cycloid disk and make high precise cycloidal transmission more accessible.
Topology Optimization for Work Flat of Tower-Belt under Multi-Loading Cases
Authors: Du Yi Xian , Hu Jin Run , Fang Zi Fan , Tian Qi Hua
Published: September 2012

Taking minimum compliance of the whole structure as the objective, the mathematical optimization model of multi-loading cases topology optimization is constructed by using the weight compromise programming method to coordinate the multiple objective functions. The optimal topology of the work flat is obtained using Hyperworks/Optistruct software and geometric model is reconstructed. The static analysis of original and reconstructed structural models of the work flat show that the optimized structure can not only decrease the weight, but also improve the stiffness and reduce the stress. The work flat will be more safe and reliable than before.
A Path Planning Model Based on Point Structure in On-Line Reverse System
Authors: Yang Guang , Zhang Yong Di , He Lin Nan , Chang Hong Jie
Published: September 2012

The reverse engineering general with coordinate measuring machine or 3D scanner realize the parts digital，and the measuring equipment is very expensive which limit the reverse engineering application. To solve this problem, this paper uses the higher precision walking mechanism of numerical control machine, adds the special online probe to compose a digital measuring equipment ；it uses the CAD sketch model to drive, which researches the basic representation method of the path information，the distribution form of the measuring point in the different characteristic element，the distinction between the measuring point，the attribution rules and the derived form of the path information of the measuring point. It also includes the development of dedicated reverse soft and the automatic generation of the measuring program reverser path. This method provide a new low cost reverse engineering means which decrease measured data and simplify the reverse engineering.
Approach of Security Services on Smart-Phone Using Homomorphism
Authors: Kim Jin Mook , Jeong Hwa Young , Choi Hae Gill
Published: September 2012

The use of smart device is very increasing at recent. PC and Internet was main computing environment in existing but devices such as smart-phone and Tablet are dashing recently. But, serious security problem will happen because anyone is not providing security service for smart device. We wish to propose system that offers confidentiality, integrity service in smart device using AES-256 and MD-5. And after pass through certification process about device and user, wish to propose system that apply PEKS technology so that can simplify certification formality about service. AESSUHEA may offer various security services that confidentiality and integrity. And it support certification service easily and conveniently to smart device.
Effect of Channel Fading on the Performance of Wireless Ad Hoc Network Routing Protocols
Authors: Tripathi Khushboo , Dixit S.D.
Published: September 2012

In this paper the application spectrum of wireless ad hoc network is a typical battle field monitoring system for the public safety purpose and military sector where the sensor network simulator architecture is used to provide support for sensing capabilities in network nodes for different mobility conditions. Rayleigh and Rician fading (K=3) model is used for the effect of channel fading in the network scenario. The channel fading incurs extra network overhead in the PHY, MAC and Network layer. A comprehensive study on the performance of ad hoc network routing protocols under realistic network scenarios with the effect of channel fading models is presented.
Rechargeable Sensor Energy Maintenance Scheme in the Internet of Things
Authors: Liu Jian Hua , Tong Wei Qin
Published: September 2012

Internet of things applications using RFID sensors are a challenging task due to the limited capacity of batteries. Thus, energy efficient updating and maintenance have become more critical design with RFID sensor network. This paper is dedicated to combine energy harvesting and maintenance, sensor network, and resource discovery to develop a rechargeable sensor energy maintenance scheme. To deal with key sensor nodes and low energy path maintenance, the proposed approach consists of the following:(1)key point energy maintenance for RFID sensor through multi-path similarity analysis;(2)path energy maintenance for RFID sink through energy resource discovery. Use case application and simulation results show that the proposed methods reduce key sensor nodes energy maintenance time and energy maintenance path length for sensor nodes energy updating and maintenance.
Reconstruction of Table-Manipulation Method with Constraints Based on Algebra-Shape-Computer Thought
Authors: Li Dao Guo , Fu Bin , Zhou Zhong Yuan , Yang Chen
Published: September 2012

The table-manipulation method plays a important role in optimizing resource scheduling, scientifically location chosen, task assignment, investment distribution and so on. Most literatures introduction the table-manipulation method used to single thought pattern, for example, the algebra thought model, the shape thought model, or Computer software method, which cruse it is difficult to understand and apply. Therefore, a novel table-manipulation integration approach is proposed by combining the thought of algebra-shape-computer. This builds convenient access among the abstraction, modeling, solving on the practical optimizing problems discussed above.
Modeling Fuzzy Decision Fusion Based on Vague Set
Authors: Wang Jian Hong , Liu Lei
Published: September 2012

As a further generalization of fuzzy set theory, the vague set theory can overcome the shortcomings of fuzzy set by describing the membership from two sides of both TRUE and FALSE, rather than only by a single membership value. Since vague sets can provide more information than fuzzy sets, it is superior in mathematical analysis of system with uncertainty. Thus, vague set is more powerful in the describing and processing of uncertain, inaccurate, even conflicting information. In this paper, a new method vague set-based is proposed to deal with fuzzy decision fusion problem. Compared with traditional fuzzy decision fusion method- such as fuzzy comprehensive evaluation, the new method is more efficient and powerful to fulfill decision fusion with uncertain and inaccurate information. Generally, the new method is the same with group decision fusion and soft fusion.
Neural Networks Model for Settlement Prediction of Embankment
Authors: Bi Qing Tao , Ding Shu Yun
Published: September 2012

Based on the theory of artificial neural networks and back propagation algorithm, a model for predicting the settlement of embankment was proposed. Neural networks was proceeded with Matlab program. Combining with the real settlement data of Jieyang highway, the model was trained again and again, and then the parameters of model was calibrated. Comparing the prediction value of model with the observational data based on field measurement, it shows that the accordance of the predicted settlements by the proposed model with the measured data is better. As a branch of nonlinear science, neural network theory has strong practical value and advantages in embankment settlement engineering analysis and prediction, because of its strong ability to learn and its high accuracy to approach any nonlinear function.
Presenting a Model for Increasing Productivity in Hydropower Plants by Identifying Organizational Complications
Authors: Erfani Seyede Zahra , Akhgar Babak , Taghvaie Seyed Masoud , Estiri Frabod
Published: September 2012

The present economical conditions on today’s world require specific point of view and policy making in business agencies. In this competitive world to achieve competence, competitive advantages in order to better governance, organizations need to increase their competitive powers through increasing productivity. One of the fundamental approaches to enhance the productivity level is first identifying the organizational complications then finding solution and implementing the solutions. To shed light on recognizing the firm’s complications and recoverable areas in the business agencies the authors were benefited from the concept of critical factors of success and social capital affect on inter-firm relationships then an empirical model by taking advantage of Deming Continue improvement model was presented. In order to verify and validate the performed research the planned model was accomplished in the Iran hydropower plants. Positive and acceptable results were obtained hydropower complications were identified and removed as well, organizations total factors of productivity improved.
Optimization of Hood Thickness Based on the Multi-Objective
Authors: Yu Duo Nian , Zhou Lu Yao , Li Li , Hu Zheng Cai
Published: September 2012

Head injury of pedestrian is the most common and fatal cause of mortality in vehicle-to-pedestrian crash. And the engine hood is most likely to cause harm to pedestrian head. Efforts to improve engine hood design, which minimize the head injury of pedestrian in vehicle-to-pedestrian crash, are becoming more and more important. In this study, an approximate model of hood thickness for three targets: HIC, mass and modality, is established. In order to meet the requirements of lightweight and reducing vibration and noise, approximate models iterate by the NSGA-II genetic optimization algorithm, and select the Pareto optimal solutions for thickness optimization. At last the study re-simulates the collision between pedestrian head and hood to verify the reliability of the obtained optimization results.
Research on the Mechanism of Fatigue Crack Initiation of X60 Pipeline Steel after Per-Tension Deformation
Authors: Jiang Yu Rong , Chen Mei Bao
Published: September 2012

It is impossible to keep pipelines free from defects in the manufacturing, installation and servicing processes. In this paper, pre-tension deformation of X60 pipeline steel was employed to experimentally simulate the influence of dents and the mechanism of fatigue crack initiation of X60 pipeline steel after per-tension deformation under cyclic loading were investigated. The results indicate that the mechanism of fatigue crack initiation is the typical cleavage fracture characteristics and the cracks mainly initiates from the non-metallic inclusions which was the local brittle fracture materials such as MnS inclusion. With the pre-tension deformation increase, the yield strength of the matrix was increased and the toughness decreased due to the work-hardening effect. With the effects of the non-metallic inclusions larger, the fatigue cracks initiated from the non-metallic inclusions easier.
The Factors Influcing Energy Transfer Efficiency of Micro-Actuator
Authors: Xu Ai Qun
Published: September 2012

Micro-actuators using giant magnetostrictive material as the core of drive components are becoming more and more widely used in the field of precise micro-actuator. In order to improve the energy transfer efficiency of the micro-actuator, reduce energy losing as heat and improve the working accuracy of micro-actuator.The relationship of pre-compression stress, magnetoconducivity and electromechanical coupling factor has been analyzed in the theory; A reasonable composition form of bias magnetic field has been put out; The relationship between bias magnetic field and electromechanical coupling factor has been analyzed; The configuration and size of coils have been optimized; The relationship between bias magnetic field and electromechanical factor has been discussed and experiments on correlative fields have been accomplished. When GMM is driven by constant magnetic field, measures like optimizing pre-compression stress, configuration and size of coils can be taken to improve giant magnetostrictive energy transfer efficiency and working performance of micro-actuator so that the driving performance can reach the best.
An Optimization Design of the Efficient Tubular Heat Exchanger Structure
Authors: Wang Yong Hong
Published: September 2012

A structural optimization and efficient tubular heat exchanger was designed. Compared with the ordinary heat exchanger on aspects of heat transfer area, heat loss and the structure, this kind of heat exchanger has the advantages of compact structure, high efficiency, low emissions as well as the function of temperature automatic adjustment, so it is of great promotional value.
Design and Realization of Equipment Management System Based on J2EE and Android OS
Authors: Xu Ye , Jin Xiao Fang , Liu Yong Bo , Du Huai Chang
Published: September 2012

This paper describes the technical background of J2EE and Android. The authors focus on the design of equipment management software using above technologies. Some key technologies are further analyzed in detail such as how to make mobile client to perform transaction with server side, the format of data exchange between mobile client and server side, etc.
Animal Diseases Diagnosis Expert System Based on HSMC-SVM
Authors: Lian Hua Hua , Bao Wen Xing , Wang Yun Hui
Published: September 2012

There are kinds of animal diseases and a smaller number of experts in the corresponding field of disease diagnosis expert. So animal husbandry units are unable to make a rapid and accurate diagnosis for animal diseases generally. To solve this problem, the paper is proposed a model of animal disease diagnosis expert system based on HSMC-SVM. In theory, it confirms that HSMC-SVM is feasible in applying of animal diseases diagnosis expert system. Numerical experiments verify HSMC-SVM has higher accuracy and better generalization ability in the diagnosis of animal diseases.