bluuebunny/crossref_metadata_2025 huggingface dataset:
The Etching Reaction and Surface Reconstruction of Bismuth Zinc Niobate Thin Film in SF6/Ar Plasma
Authors: Wang Shu Ya , Fu Yun Ying , Dai Li Ping , Zhang Guo Jun
Published: September 2013

Reactive ion etching (RIE) of bismuth zinc niobate (BZN) thin films using an SF6/Ar plasma has been studied. An optimum process parameters was obtained according to the highest etch rate of 90nm/min. Under this etching condition, the crystal structural properties and surface morphology of the BZN film before and after etching were characterized using X-ray diffraction (XRD), the film showed a surface reconstruction after etching, a cubic pyrochlore structure orientation transition was observed from preferential (222) to (400), and ZnF2 phases were detected. The film surface was chemically analyzed by X-ray photoelectron spectroscopy (XPS) to investigate the reactive ion etching mechanism. A zinc-rich surface was formed because low-volatile ZnF2 residues were difficult to remove.
Investigation of Bio-Mimetic Synthesis SH/KGM/HAP Scaffold
Authors: Leng Chong Yan , Cui Yong Shun , Li Yin , Wu Xiao Pei , Chen Qing Hua
Published: September 2013

Sodium hyaluronate / konjac glucomannan (SH/KGM) porous scaffolds were prepared via blending sodium hyaluronate and konjac glucomannan. The ammonia was used as cross-linker in blending process. The SH/KGM scaffolds were soaked into calcium nitrate solution and then followed by immersing into simulated body fluid to get SH/KGM/HAP porous scaffolds. X-ray diffraction and fourier transform infrared spectroscopy (FTIR) were used to characterize the crystallization and chemical structure of SH/KGM and SH/KGM/HAP scaffold materials. The scanning electron microscope (SEM) was used to analysis the morphology of SH/KGM/HAP scaffold and BMSCs on surface of the scaffold. The results show that hydroxyl-apatite produced on the surface of the SH/KGM, which appears as spherical particles in the SH/KGM/HAP scaffold surface, and the SH/KGM/HAP porous scaffold possesses good biocompatibility with cell.
Effects of Acid Concentration on the Superhydrophobic Surface on Aluminum Alloy by Etching and PP-Coating
Authors: Liu Wen Yong , Sun Lin Yu , Wu Ruo Mei , Chen Yi , Liu Yue Jun
Published: September 2013

We investigated the effect of hydrochloric acid concentration for preparing the superhydrophobic surface on aluminum alloy by etching and PP coating. The superhydrophobicity of the surface was characterized by water contact angle. The morphologies of the surface were observed by SEM. The results showed that the acid concentration had an obvious effect on the hydrophobic surface and a good superhydrophobic surface was achieved by PP coating after etching for suitable time. When the acid concentration is lower, the longer time is necessary for obtaining the superhydrophobic surface. When the concentration of hydrochloric acid was 4 g/L and the etching time was only 8 min, the best superhydrophobic surface with the highest contact angle (CA) of 157° was prepared. The obtained superhydrophobic surface resulted from the rough surface and the material of PP with the low surface energy.
Effects of Impulse Current on Mechanical Behavior of Ti and Ta
Authors: Li Yao , Yang Jun Jie , Xue Ping , Yu Wu Xin , Zuo Zhi Jiang , Peng Shu Hua
Published: September 2013

In this paper, pure metals Ti and Ta were used to study the effects of impulse current on their mechanical properties. The results showed that the impulse current caused the tensile strength of the two metals to decline remarkably. The elongation of metal Ta rose and was enhanced with increasing current density. But as for metal Ti, the elongation hardly rose. Theoretical analysis suggested that the impulse current had little apparent effect on HCP metals, for it had less slip systems; however, it had obvious effects on the elongation of BCC metals, for they had more potential slip systems. The transmission electron microscopy (TEM) observations showed that crystal microstructure of the two metals had not changed significantly.
Simulation Design of a Novel Algorithm on Space Vector PWM
Authors: Ji H. , Li Zhi Yong
Published: September 2013

A novel algorithm of space vector PWM (SVPWM) based on artificial neural network is proposed in this paper, in order to cope with the complex calculation required in Space Vector PWM. It makes full use of the fast parallel computation and learning capability of ANN to shorten the time of calculation and reduce the harmonic composition and loss. The simulation model of vector control for permanent magnet synchronous motor drive system is built and simulated in MATLAB/Simulink. The simulation results show that the permanent magnet synchronous motor drive system based on artificial neural network SVPWM has more perfect performance than that based on traditional SVPWM controller in dynamic and static property, such as little torque pulses as well as robustness.
Mathematical Modeling of Chip Control during Chip Breaking
Authors: Wang Dao Lin
Published: September 2013

The handling of continuous chips in bulk can present a major problem in metal cutting. The controlling and breaking of chips is accomplished by a chip breaker. A reliable and practical chip controlling mathematical model was established after Chip breaking requirements and chip breaking grooves parameters being analyzed in this paper. The results can be important to practical on a variety of chip breakers and chip-breaking grooves parameters desig
Study on the Chaos Phenomenon of the DC-DC Buck Switching Power Supply
Authors: Duan X.L.
Published: September 2013

The simulation model of the DC-DC buck switching power supply was built. The chaos phenomenon of the DC-DC buck switching power supply was studied by the simulation. The simulation result showed a point was described in the chaos figure of the output voltage or current waveform of the system when the system was in a stable state. When the chaos of the system was happened for some reason, the system became unstable, cycle presented infinity and all point may not fall in the same position, at the same time also meaning the chaos phenomenon has happened, so in the figure could describe countless different point.
Experimental Study on Milling Force of Nickel-Based High-Temperature Alloy GH3039
Authors: Liu Yu Bo , Zhao Can
Published: September 2013

Nickel-based high-temperature alloy GH3039 is a kind of alloy with the poor thermal conductivity, work hardening and hard particle. It has poor machinability. The orthogonal experiment is adopted for the study on the effect of the cutting parameters on the high-temperature alloy GH3039 milling force by using the carbide tool. The milling force of the size is obtained by orthogonal cutting experiments under different cutting parameters, and analyzed the size of the cutting parameters on cutting force of law. The milling force experience formula is established by means of regression analysis. The rationality of the model is examined by using the absolute error calculation.
Fabrication and Fracture Analyses of SiC Particulate-Reinforced Al Matrix Composites
Authors: Li Duo Sheng , Zhou Xian Liang , Zou Ai Hua , Hua Xiao Zhen , Yu Y.W.
Published: September 2013

The fabrication process and fracture characterization of 35 and 65 vol% SiCp particulate-reinforced Al matrix (SiCp/Al) composites have been investigated. SiCp composites having different volume fractions of the n-SiCp were synthesized via by pressureless-infiltration at near-net-shape route and were uniaxially tested at room temperature. The SiC particles were mixed with silicasol as an inorganic binder in distilled water. The mixtures were consolidated in a mold by pressing and dried in two step process, followed by calcination at 1000 °C. The SiCp/Al composites were fabricated by the infiltration of Al melt into SiC performs. The experimental results show that volume fraction of reinforced particles in SiCp/Al composites had a significant influenec on fracture section surface characterization in tensile tests. Composite with 45 vol% SiCp, fracture was firstly happen in Al matrix, shallow dimples and intergranular fractures were seen in all the fractographs. With increasing of vol% SiCp, fracture was more brittle in appearance in the composites and the fracture surfaces were flat and less plastic deformations.
Crowned Profile Design of Roller Bearings Used in Rolling Mill Based on Three Dimension FEA
Authors: Wei Yan Gang , Li Hai Tao , Wang Yan Tao
Published: September 2013

Aiming at the characteristic of bearings supported in rolling mill and combining contact mechanics and finite element method, the edge effects of the cylindrical roller bearings used in the rolling mill are analyzed based on FEA for the Roller system of Rolling Mill and FEA of the bearing whole. According to the results of three dimensions FEA on the edge effects, different modification curves are taken to design crowned profiles of the cylindrical roller bearings. And comparison between the effects of the different modification curves is done through the simulation of 3D FEA, so the guides are offered to optimize the cylindrical roller bearings used in the rolling mill.
Research Progress of the Laser and Low-Pressure Medium Jet Composite Processing
Authors: Yuan Gen Fu
Published: September 2013

The article summarily introduces the research progress of the laser and low-pressure medium jet composite processing. It simply introduces the investment of the workbench of the composite experiment, the etching experimental study of the ceramic and the high-speed steel, the experimental study of the composite cutting of the ceramic, and also introduces the influence of the water jet flow to the loss of the laser energy during the composite processing. Finally, this article puts forward prospects to this technology.
A Method for Key Updating of IBE with Wildcards
Authors: Wang Lu
Published: September 2013

A variety of identity-based encryption mechanisms are gradually developed since BF-IBE was proposed in 2001. However, since a users public key is fully open and cannot be modified, the key update issue needs to be solved urgently. And at the same time, hierarchical IBE has been proposed to reduce the burden of a single PKG. The paper suggests wildcards and put forward WIBE, which can make one-time encryption for user groups of HIBE. Then WKU is put out based on WIBE, which is a key updating mechanism in the measure of years and manages the expiration date of users keys.
Improvements on a Mobile IP Registration Protocol Featured with User Anonymity
Authors: Li Guang Song , Jiang Qi , Ma Chuan Gui
Published: September 2013

Security of mobile IP is very important for seamless roaming in heterogeneous mobile environments. Recently, Dang et al. proposed a new scheme for secure registration procedure of mobile IP. However, we found out that the scheme had three weaknesses in security or performance. In this paper, we point out the weaknesses of their scheme and give some improvements in order to achieve user privacy and protocol efficiency.
Analysis of Fiberglass Winding Angle on Natural Frequency of Cylindrical Shell with Symmetric Boundary Conditions
Authors: Wang Zhi Wei , Wang Yan Fu , Qin Bai
Published: September 2013

In order to obtain approximate solution of natural frequencies for the free vibration of anisotropic circular cylindrical shells made of GFRP (glass fiber-reinforced plastic) with symmetric boundary conditions, Loves theory and energy method are used. Computation results show that the fundamental natural frequency comes from different vibration modes while the winding angle varies, the effect of number of axial half waves is stronger than number of circumferential waves on natural frequency of free vibration of anisotropic circular cylindrical shell.
Research and Design of the Distributed Mass Small File Storage System Based on WCF
Authors: Lin Hong , Chen Shou Gang , Wang Bao Hui
Published: September 2013

Recently, with the development of Internet and the coming of new application modes, data storage has some new characters and new requirements. In this paper, a Distributed Computing Framework Mass Small File storage System (For short:Dnet FS) based on Windows Communication Foundation in .Net platform is presented, which is lightweight, good-expansibility, running in cheap hardware platform, supporting Large-scale concurrent access, and having certain fault-tolerance. The framework of this system is analyzed and the performance of this system is tested and compared. All of these prove this system meet requirements.
Migrating Resources and Rebuilding Educational Apps Store in Metro Age
Authors: Zhu Ning Xian
Published: September 2013

This paper is how to migrate PC-based educational resources to multi-terminal environment, to build desktop application in personal servers using VDI, and to form N screens and a cloud educational apps store. In apps store, students use the multi-terminal device in interacting multi-screen and sharing resource. It offer a mobile and X in one service mode. At last, we give some strategies and tips for migrating resources.
A Brief Talk about the Research Content of Fire-Fighting Equipment Management Based on Grid Technology
Authors: He Xiang Hui
Published: September 2013

This paper mainly introduces the specific research contents of fire fighting equipment management based on grid technology. Through the establishment of a complete set of grid system, combining with database theory to complete the design of database about fire fighting equipment management system, initiatively updating information, it will be easy to achieve digitized management objects, the efficient management, and networked information processing.
The Application of Virtual Design on Feeding Device of Precoated Laminating Machine
Authors: Wang Xiao Hua , Qi Yuan Sheng , Li Yue Teng
Published: September 2013

In the drive of market demand, postpress equipments developing rapidly. Because of environmental protection and energy saving, pre-coating technology has broad application prospects. But in China, the design of the machine are mostly generic and doesnt have a set of perfect design theory. There is no design innovation from the source. Using virtual prototype technology, the structural design of the key components of the pre-coated laminating machine to the paper feed mechanism is improved. Through the three-dimensional modeling, assembly and disassembly, adjustment mechanism simulation, motion simulation of mechanism, the physical, mechanical performance analysis, simulation, prediction, realizes fast implementation and optimization design, improves the processing and assembly technology.
Virtual Reality and Virtual Reality System Components
Authors: Bamodu Oluleke , Ye Xu Ming
Published: September 2013

This paper is a synoptic review of virtual reality, its features, types, and virtual reality systems, as well as the elements of the VR system hardware and software, which are essential components of virtual reality systems.
A Global Optimization Approach for Solving the D.C. Multiplicative Programming Problem
Authors: Zhou Xue Gang
Published: September 2013

In this paper, we present a global optimization algorithm for solving the D.C. multiplicative programming (DCMP) over a convex compact subset. By introducing auxiliary variables, we give a transformation under which both the objective and the feasible region turn to be d.c.Then we solve equivalent D.C. programming problem by branch and bound method and outer approximation algorithm.
Power Consumption Analysis of High-Speed Train’s Brake Discs
Authors: Zhu Xiao Yu , Zuo Jian Yong
Published: September 2013

Apart from the aerodynamic drag produced by transitional motion of high-speed train, the rotational parts of the train, especially the ventilated discs mounted on axles, would also cause resistance torques due to air pumping effect, which consume traction power. In this paper the train running process is divided into traction, uniform running and braking three phases, then the power consumed by the brake discs as well as the proportion of which in total traction or braking power during the three periods is calculated based on kinetic energy theorem. The results indicate that, during traction and uniform running period, the power consumption of brake discs shares 2.84% and 12.87% of total traction power, and in brake stage, the proportion is 0.78%. What is more, in the uniform running phase, the proportion of brake discs power consumption caused by resistance torque can reach to 7.68%. If the air inlet of brake disc is blocked during traction and uniform running period to weaken air pumping effect, the useless power consumption can be effectively reduced and the traction efficiency can be improved.
Generating High-Quality Random Numbers by Next Nearest-Neighbor Cellular Automata
Authors: Ping Ping , Xu Feng , Wang Zhi Jian
Published: September 2013

Cellular automaton (CA) has been widely investigated as random number generators (RNGs). However, the CA rule and the number of neighbors must be chosen carefully for good randomness. In Ref. [11], non-uniform CA with next nearest neighborhood was applied to generate a pseudo-random sequence. Considering that non-uniform CA has more complex implementation in hardware and needs lager memory to store different rules than uniform CA. In this paper, we propose new RNGs based on uniform CA with next nearest neighborhood. Time spacing technique and NIST statistical test suite are used to find optimal rules for uniform CA. Experiment results show that the sequences generated by uniform CA with optimal rules successfully passed all tests in the NIST suite.
Behavior Consistency Verification for Evolution of Aspectual Component-Based Software
Authors: Zhou Xue Yao , Chen Ning Jiang , Hu Dan Dan
Published: September 2013

Aspect-Oriented Software Architecture (AOA) is a high-level abstraction and integration blueprint of aspectual component-based software. A semantic model of aspectual component-based software is proposed to provide behavior description and semantic foundation for the consistency verification of software architecture dynamic evolution. By using the semantic model of Pi-calculus, a set of the consistency verification methods of dynamic evolution from multiple aspects are introduced. Finally, a case study shows the effect of these methods.
A Design of Software Testing Management Platform Based on CMM
Authors: Fu Yi Jing , Hou Xiao Yan
Published: September 2013

With the increasing requirement in software quality, the importance of software testing in the project implementation process is growing. In order to ensure the smooth progress of the test work, it is necessary to be effective in managing it, so software enterprises are in a grave need of an efficient and practical software test management platform. CMM is a method for evaluating software contracting capacity to help improve software quality, focusing on the elevation and evaluation of management and engineering capabilities in the software development process. This study, on the basis of research of CMM model, the software testing process and the need of company's software testing management, designed a CMM-based software testing management platform. The model consists of six functional modules, including requirements management, test case management, test running management, the test defect management, the test task management, workload management. The improved features contain test milestone management, test result analysis and supporting testing automation. The functions of e-mail alert, defect report discussion records and custom defect status are also included. Eight kinds of staff roles are involved.
The Study Found that the Intelligent Mobile Phone Technology of Malicious Code
Authors: Fan Ya Qin , Zhang Ge , Liu Miao , Zhang Xin
Published: September 2013

This paper studies the development trend of intelligent mobile phone, confirmed the necessity of research on intelligent mobile phone malicious code. Study on the detection technology, proposed intelligent mobile phone regular networks and random networks based on malicious code propagation model, propagation mechanism is studied. Set up a perfect malicious code discovery and defense system model, at different levels is put forward that different, prove the necessity of scanning algorithm and Semantic Detection Algorithm for eigenvalue. To improve the security of the whole communication network.
A Spatial Data Security Model under the Cloud Environment
Authors: Li Xiang , Liu Zi Fan , Liu Wen Bing , Xu An , Ma Ling
Published: September 2013

With the cloud computing time arrival, spatial data storage and management technology based on cloud computing are getting more extensive attention and application. But under the cloud environment, how to ensure that the data stored in the cloud security will be a serious challenge. This paper introduces the meaning characteristics and development present situation of cloud computing, and gives the analysis about the advantage of using cloud computing technology to spatial data management. The paper puts forward a spatial data security management model under the cloud environment, and summarizes the key security technologies of the spatial data storage and management.
Production Plan of Information Management System for Virtual Industry
Authors: Su Jing , Li Xiao Jing
Published: September 2013

The information management is a crucial mission for a virtual industry in such a competitive market environment. The typical characteristic of information management is distribution, autonomy and co-operation. Based on an on-going ESPRIT project (X-CITTIC), The author presents a distributed information management architecture for production planning and control in a virtual enterprises of semiconductor manufacturing. Object technologies are widely used in its design and implementation. A detailed structure of the components in the architecture, called information managers, is also suggested and introduced. Each information manager has three elements: a data object server, a database and a group of meta-objects. The information management can provide not only basic services (e.g. read and write) but also advanced services (e.g. notification, security control, subscription and data sending). Finally the present X-CITTIC information management system is detailed introduced.
Information Technologies and Translation Instrumental Competence
Authors: Lei Pei Hua
Published: September 2013

This paper outlines the types of information technologies applied to translation today and translation sub-competences. A study was made in which students were motivated to participate in building DIY corpus based on a given task and to solve the problems in their former translation. It was found that students instrumental competence was improved in recognizing, evaluating, and utilizing information technologies in solving real translation problems, and that their other translation sub-competences could be acquired when translating a real world task in highly contextualized teaching environment. The purpose of the study is to showcase the necessities of including the revising skills required for online machine translate into instrumental competence of language learners at undergraduate level and the possibilities and limitations of online machine translation system when translating Chinese texts into English.
Research on Survivability Evaluation of Ad Hoc Network Connectivity
Authors: Wang Ji Lu
Published: September 2013

Connectivity is the basis and premise of the network services. Ad hoc network has the property of topological changes, which makes the connecting reliability the basis of its survivability evaluation. To compute the connecting reliability of Ad hoc network, it needs to analyze the whole system and evaluate the probability of keeping links available. Therefore, by applying the Markov process in Ad hoc network system modeling, the paper analyzes the connection availability of stead-state links when there are system exceptions. When the exception is thrown, it can analyze the phenomenon of instantaneous packet losses and delay at a network node by means of queuing theory. With a combination of steady-state availability analysis and nodes instantaneous non-response, the paper can draw a conclusion that evaluation indicators like connecting probabilities, packet losses and delay, can be used in survivability evaluation of Ad hoc network.
On the Study of Softwares of Computer-Aided Translation (CAT)
Authors: Zhang Wan Fang , Zhai Chang Hong
Published: September 2013

In the current information age, computer-aided translation (CAT) is gaining greater concern and appreciation of translators. In this paper some widely employed softwares will be briefly introduced in terms of transformation from machine translation (MT) to CAT. Softwares of CAT will be the major focus, involving the illustration of their basic working principles and advantages, and some ways to get them improved.
Critical Operations Selecting Method
Authors: Li Qiu Ying , Luo Lei
Published: September 2013

t is very important to select critical operations in software reliability testing and software safety testing. In this paper, a framework for selecting critical operations based on Analytic Hierarchy Process (AHP) is proposed. The hierarchies of goals, criteria and alternative programs are introduced separately. A preliminary application is practiced to show the methods application process and demonstrate the feasibility of this method, which can be taken as a reference for critical operations identification in engineering application.
Construct a Credit Evaluation Framework of E-Commerce
Authors: Yin Sheng Bin , Zhang Hong Yun
Published: September 2013

As an important commercial application, E-commerce is widely used with the development of Internet technology. However credit disks block the progress of E-commerce in the non-standard market environment, Analyzing credit management modes such as eBay and Taobao, this paper proposed a new credit calculation formula and construct a credit evaluation framework, in order to improve trading success rate, to avoid commercial fraud, and to contribut information construction of China.
Temperature Compensation for Mechanically Dithered RLG Bias Based on K-Means Clustering
Authors: Li Si Yi , Yang Gong Liu , Yuan Er Kai , Zhang Lu
Published: September 2013

The temperature characteristic of mechanically dithered ring laser gyroscope (RLG) has been studied, based on temperature experiment. Using the method of clustering, analyzed the output of the temperature sensor. Finally, the segmented data was compensated, and the result was compared with that of full temperature data compensation. The results show that: the model of full temperature data compensation method is incomplete. There is still much room for improvement. In this paper, the segmented data compensation model by using clustering analysis method can compensate the gyro bias, improve the gyro accuracy.
Information Security Risk Assessment on Complex Information System
Authors: Zhang Chang Lun , Li Chao
Published: September 2013

Risk assessment is the key and core technologies ensuring IT system security. Based on the comprehensive analysis to complex information systems, this paper first summarizes the typical characters of complex information systems and then gives new risk factors that complex system need to face. Furthermore, a new risk assessment method is proposed to evaluate the complex information systems. The method takes full account of the effect of complexity of complex information systems in each process of risk assessment, and utilizes multi-level risk views to carry out in-depth analysis to the risk of complex system.
Research on Computer Network Security Architecture of Universities in China
Authors: Xu Yue
Published: September 2013

With the development of network, the computer systems of universities in China gradually use network management and services. However, in network the system faces security threats like virus, malicious software and human attack, which may cause data damage, missing and stealing of confidential documents, or even lead to the breakdown of network system. Therefore, it is important to promote the security of computer network systems of universities. This paper gives the comprehensive analysis on the security system of computer network systems of universities in China, analyzes the factors easily leading to the security and provides suggestions and reference for network construction.
Information Hiding and Extracting in Printed Chinese Documents by Missing Feature Method
Authors: Lin Hui , Lin Jie , Fu Bo
Published: September 2013

In this paper, we proposed a new method for hiding and extracting information in printed chinese documents. This new method embeds information into chinese documents by varying the typefaces of chinese words. In addition, an information extracting method based on missing feature concepts is proposed to handle the partial occlusion, generated by printing and scanning operations. The new improved approach has been evaluated on numerous printed documents and demonstrated improved performance over other systems.
An Aspect Oriented Method to Model and Analyze Self-Recovery of Cloud Computing
Authors: Zhang Xiao Yun , Wu Chan Le , Su Xue
Published: September 2013

Cloud computing has attracted much interest recently from both industry and academic. More and more Internet applications are moving to the cloud environment. This paper proposes an aspect oriented method to model and analyze self-recovery of cloud application according to its characteristics. Petri nets are used as the formal description language for cloud application, and use it to describe its basic elements, such as, cloud module, resource service, physical machine, virtual machine, etc. Aspect oriented programming method is used to extract self-recovery process as the core and crosscutting concerns. On this basis, the self-recovery approach is presented, the related theories and tools of Petri nets are used to verify the correctness of proposed method. Experiments show that the proposed solutions have better performance in supporting the self-healing Web service composition.
Preparation of Paper-Based Printing Plate and its Ink-Water Balance Performance Analysis
Authors: Hao Xiao Xiu , Wei Na , Sun Cheng
Published: September 2013

The principle of offset printing is the graphic part lipophilicity and the blank part oleophobic hydrophilic. Based on the ink-water balance theory, this paper mainly discusses the base paper and the coating formulations of paper-based printing plate. In this paper the properties of the paper-based printing plate of the different coating formulations were detected and evaluated, meanwhile these plates were tested in the offset printing. Based on the detection of print quality, plate coating performance and the number of copies printed, the base paper and coating formulations of this plate was be determined. The results of this study for this plate have some significance in the actual production.
Multivariate Regression Analysis Using Statistics with R
Authors: Li Xiu Min
Published: September 2013

Multiple regression analysis is a useful model in econometrics. It can be applied in many fields. Statistics software plays an important role in processing data. This paper gives a method to use R, constructs regression model, and explains the result.
The Research and Design of Records Management Information System Based on Network
Authors: Cui Shu Min
Published: September 2013

The design of records management information system should take into account the features of information technology and the special requirements of records management to guide the design of the system with a brand new idea. Through the analysis of functions of network-based records management information system, this paper made an in-depth study on the system architecture, logical structure, and data storage and optimized and adjusted the data model combined with specific development needs and development environment. It also provided the specific solutions and technical measures on the records management information systems with numerous and complex data information.
An Electronic Shelf Label System Based on WSN
Authors: Zhou Chun Hui , Mei Pan , Huang Li Wen , Liu Ke Zhong , Wen Yuan Qiao
Published: September 2013

Traditional paper labels on the supermarkets shelves are of many shortcomings such as the high error rate, high losing rate, increasing cost and unrealizable realtime-updating caused by manual management. In order to overcome these shortcomings, this paper aims to design a new Electronic Shelf Label system. Firstly, the overall framework is introduced. Then an ultra-low-power ESL and wireless communication base station modules are studied respectively. The MAC and router protocols are also designed based on Wireless Sensor Network (WSN) to meet the requirement of low power consumption and real-time price update. The Electronic Shelf Label system can improve the efficiency of the label management greatly and enhance customers experiences thus has a wide prospect of application.
Attribute-Based Authentication Protocol of the Internet of Things
Authors: Liu Yan Bing , Ren Wen Jing
Published: September 2013

Security and privacy is always the most important issues by the public in the Internet of Things. The core problems are associated with the diversifying of the Internet towards an Internet of things, and the different requirements to the security level for application. Therefore, this paper is to put forward an authentication model and protocol to cope with the problem. The protocol is adopted with attribute-based encryption to replace the traditional identity-based encryption (IBE), and then make formalization analysis to the security of the protocol by using BAN logic.
A Sensor Network Flooding Routing Algorithm Based on Sector Area Nodes Selection
Authors: Qian Kai Guo , Li Ming , Dai Zu Cheng
Published: September 2013

A sensor network flooding routing algorithm based on sector area nodes selection (RABSA) is proposed and evaluated to improve shortcoming hidden terminal, information implosion and emerging redundant packet copies which consume more node energy in the flooding algorithm. Source node selects the nodes located in the sector area of arc angle for ɑ and radius for node communication distance as next hop routing nodes. Performance analysis and simulation experiment shows that the new protocol effectively reduces the data redundancy, reduce the energy consumption and prolong the network lifetime.
Design and Implementation of General Spacecraft Control Language
Authors: Li Lei , Gao Yong Ming
Published: September 2013

With the development of spacecraft control technology, the traditional control methods could not meet the collaborative work between target system and ground control system. Most existing spacecraft control languages are based on the instructions of the target system, the control programs are poor readability and difficult to develop. General spacecraft control language (GSCL) is readability with rigidly structured and keywords in English. GSCL uses the target system configuration file as interface of combination with the target system. GSCL is independent of target spacecraft and easy for developing.
Application of Fuzzy Control in Sewage Treatment System
Authors: Zhang Rui , Song Le Peng
Published: September 2013

Fuzzy control does not need to master the precise mathematical model of control object, but to determine the amount of the control object according to the control rules. This control method has a good control effect for the system with lag or random interference. It is a new attempt to treat the sewage with a PLC fuzzy controller. The control system is more reliable and it could achieve a good control effect. According to the features of the complexity of modern sewage treatment system and the difficulty of establishing accurate mathematical model, a fuzzy control method applied to the system with PLC is established and realized. The results showed that based on this method, the system is easy to realize and anti-interference ability is strong, a good adjustment quality is obtained.
Research on Visualization Technology of Mechanical Virtual Test System
Authors: Zang Bo , Liu Bing Li
Published: September 2013

FEA of software in the traditional sense mainly emphasizes model calculation, output the static visualization results in virtual environment, cannot meet the demand for visual product requirement in digital product cooperation interactive design system. Using visualization technology in mechanical virtual test system to develop a more realistic virtual environment, realization virtual reality assembly and real-time interactive of model simulation and practical test can directly reflect the product state, better understand and analyze mass product and test data, save cost and shorten manufacturing cycle.
Two-Motor Synchronous Decoupling Control Based on Improved Incremental Regularized Extreme Learning Machine
Authors: Wang Feng , Ding Jin Lin , Sun Hong
Published: September 2013

Neural network generalized inverse (NNGI) can realize two-motor synchronous decoupling control, but traditional neural network (NN) exists many shortcomings, Regular extreme learning machine (RELM) has fast learning and good generalization ability, which is an ideal approach to approximate inverse system. But it is difficult to accurately give the reasonable number of hidden neurons. Improved incremental RELM(IIRELM) is prospected on the basis of analyzing RELM learning algorithm, which can automatically determine optimal network structure through gradually adding new hidden-layer neurons, and prediction model based on IIRELM is applied in two-motor closed-loop control based on NNGI, the decoupling control between velocity and tension is realized. The experimental results proved that the system has excellent performance.
Electro-Hydraulic Servo System Modeling and Dynamic Performance Analysis of Mechanics of Rock Materials Testing Machine
Authors: Wang Chun Guang , Liang Yong Sheng , Liu Xiu Juan , Lu Yong Ji , Wang Xin , Yang Sheng
Published: September 2013

The complete stress-strain curve of rock is obtained mostly by the rock mechanics tester. So the rock mechanic tester is quite important in industry. It provides the scientific data for engineering design and construction. But the material of rock is made of special complex natural structure. It is very hard to obtain the complete and true performance data of rock by the common material tester which causes rock broken easily. The main cause lies on the slow response of control system, the bad performance and rigidity.
In order to solve the question, this paper studies the rock mechanics tester intelligent control by computer electro-hydraulic servo device by means of computer technologies, electromechanical integration technologies and hydraulic technologies.The main work of this paper is about the modeling and simulation, mechanics of materials testing machine intelligent control to lay the foundation for further study.
Variable-Pressure Secondary-Control with Power Recovery for Loading Hydraulic Driving Head of Rotary Drilling Rig
Authors: Li Wan Guo , Fu Yong Ling , Qi Xiao Ye , Chen Juan , Ma Jun Gong
Published: September 2013

A technical challenge for large power loading test device is how to achieve both of high loading dynamic performance and high energy efficiency, consequently power recovery and reuse technology should be applied. Hydrostatic secondary control has reasonable dynamic performance for loading and benefits power recovery. However conventional secondary control based on constant pressure network (CPSCS) can still be further improved when using in loading test bench for hydraulic driving head. This paper proposes hydrostatic variable-pressure secondary-control (VPSCS), for which the corresponding system is designed. Subsequently by simulation with AMESim, the dynamic performance and energy feedback or recovery efficiency of CPSCS and VPSCS are analyzed and evaluated, and finally the works in the next step are presented. The conclusion shows VPSCS, compared with CPSCS, improves energy feedback efficiency by 18%~30% but has worse wave shape of load torque when using the servo pressure valve set designed preliminarily.
A Software Design of Data Acquisition System Based on Optimal Control AMT
Authors: Cheng Yu , Zhao Hong Wei , Wang Song , Lv Wei , Sun Tao
Published: September 2013

As the developing of the automatic manipulate control technique of automobile, the research and development of Automated Transmission have abstracted more and more attention. In numerous Automated Transmission productions, AMT (Automated Mechanical Transmission) plays an absolutely important role. This system is a AMT data collection system based on electro-hydraulic control. According to the design of the system software program, we can collect and analyze the data of driving, and then mark the electro-hydraulic valve. This paper designs and realizes the total structure of data collection and processing system, analyses and designs the function of all modules elaborately. It is the summary of the front period work of the whole AMT system, and is the foundation of the work of function realization and running and debugging of AMT system.
SVM Inverse Control Method to Nonlinear Systems
Authors: Xu Qi Hua , Geng Shuai , Meng Jiao
Published: September 2013

In recent years, inverse system method has been achieved some progress. However, it needs not only deterministic mathematical model but also analytical expression of the inverse system. They are often not able to be realized for most of the actual control systems. Therefore, it is necessary to combine the inverse system method and the intelligent control methods which are not relied on or not entirely relied on precise model in order to overcome its "bottleneck" in practical application. The application of support vector machine in inverse system method is mainly studied in this paper. Firstly, the rigorous theory of inverse system method is introduced. Secondly, SVM inverse control method is described. Finally, the additional controller is designed to complete the closed-loop control of the pseudo linear systems. Through simulation in MATLAB, the result shows that the method in this paper is effective and feasible.
Design of an Automatic Magnetic Balance System
Authors: Gong Xiang Shan , Cui Li Ya
Published: September 2013

Along with the fast development of high-technology fields in China, especially in aviation and aerospace, in order to meet the fast and accurate detection requirements of various magnetic material properties, to solve artificial measurement error and low efficiency on the current manual measuring way, a kind of automatic magnetic balance system was developed. The mechanism design, measurement & control system design and the main technical indicators were also described. The application results show that the automatic magnetic balance system can work stable and reliable, and the test capacity of the system is effectively expanded because of higher precision, higher measuring efficiency and more convenient operation, so the system can satisfy the testing requirements in the process such as scientific research, manufacture, teaching and etc.
Mechanical Ball Milling and Liquid Phase Sintering of Steel-Bonded Cemented Carbide Machining Crumbs
Authors: Ye Jian , Gao Wei , Li Wen Ke , Zeng Zhao Qiang
Published: September 2013

The technology is introduced about mechanical ball milling and liquid phase sintering of machining crumbs of steel based carbide alloy in this article. The materials obtained from machining crumbs of steel-bonded cemented carbide are qualified compared with the conventional steel-bonded cemented carbide materials in the aspects of hardness, wear resistance by using the technology and the process is reasonable and practicable, according to experimental results. It can be extremely important when considering the recycling and make full use of tungsten resources.
Research on Vehicle ABS Detection Technology Based on Flywheel Inertia Simulation
Authors: Zhou Kai , Na Ri Sha , Wang Xu Dong
Published: September 2013

Anti-lock Braking System (ABS) has widespread used depending on its mature technology and superior performance. We design a test rig which can simulate the running condition of wheels for ABS to detect the braking performance. The kinetic energy of vehicle is replaced by the kinetic energy of rotating flywheel, and the tire-road friction coefficient is replaced by magnetic powder clutch. The amplitude of exciting current to the clutch has linear relationship with the friction coefficient, so as to provide a datum for detecting the working status of ABS under various road conditions. The system can realize simulating test of single road surface, bisectional road surface and joint road surface. The validity of the road simulation method can be verified by the real-time data from the user interface.
Application of LED in Marine Fishery
Authors: Shi Wen Qing , Xiong Zheng Ye , Li Yong Qiang , Huang Cun You
Published: September 2013

Aiming at the high energy-consuming characteristics of Chinese marine fishery, the application of LED in Chinese marine fishery is analyzed. It has remarkable energy-saving effect if the fishing style of trawling is replaced by light-seine fishing, and the gathering-fish lamps of metal halide lamps or incandescent lamps are replaced by LED light sources. The conversion of the trawlers to light-seine vessel and widespread use of LED light sources will lead to cut down energy consumption and increase the economic benefits. Based on rough calculation, it can make Chinese fisherfolk increase income about hundreds of millions of dollars and reduce more than millions of tons CO2 emission if the conversion of the trawlers to light-seine vessel and the replacement of metal halide lamps or incandescent lamps to LED light sources can reach 20% of all. Moreover, LED light source can use for general lighting purpose in marine fishery. All of these will cause the development of the correlative industries. For instance, the market demand of LED is very vast.
Application of NMR in Coal Reservoir Characterization
Authors: Yang Zi , Pan Xiao Hua , Yuan Sheng Qiang , Ji Zhi Feng
Published: September 2013

Nuclear Magnetic Resonance (NMR) can provide information about pore and fracture structures, porosity and permeability of reservoirs. It can deep into materials without destroying samples, with advantages such as rapid, accurate and high resolution. This paper introduced the experimental principles and carried out a series of NMR experiments based on high rank coal and low rank coal samples. Results show that: the T2 spectra of high rank coal samples have an independent trimodal distribution with the main peak located at the low T2 value section, indicating that high rank coal is dominated by micropores and transition pores; while the T2 spectrum of low rank coal samples show a continuous trimodal distribution with the main peak located at the high T2 value section, demonstrating the dominance of macropores, mesopores and fractures. The pore and fracture structures of low rank coals are significantly favorable than those of high rank coals.
A Study on Vibration Measuring Technique for Vibratory Feeding System
Authors: Han Liang , Wang Jun Jing
Published: September 2013

The development of industrial automation has urged the vibratory feeding system to become an efficient automation equipment. With vibration as the operating mode of the vibratory transmission system, the moving mass has a crucial impact on transmission rate and efficiency of the material. Therefore, it is necessary to carry out real-time vibration measurement of the vibratory feeding system and get feedback to the control system, so that the vibratory feeding system works more efficiently. The paper provides two vibration measuring techniques which separately uses the displacement sensor and the acceleration sensor. Through comparing the two methods, it provides a strong basis for choosing better measuring technique for vibratory feeding system.