bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Wireless Monitoring System of Gypsum Mine Goaf Based on LabVIEW
Authors: Zhang Hai Na , Liu Yuan Hao , Zhou Xuan , Ren Gao Feng
Published: October 2014

According to the gypsum mine goaf disaster formation mechanism and failure characteristics, wireless monitoring system of gypsum mine goaf was designed successfully by using virtual instrument technology, modern sensor technology, wireless transmission technology and the LabVIEW programming language. By using high-precision sensors to acquire dynamical data of monitoring projects, combined with wireless transmission technology to realize the automatic wireless real-time telemetry, using the graphical programming language LabVIEW to develop a software with friendly interface and convenient operation, the monitoring system can timely reflect the dynamic changes of the goaf and forecast the potential safety hazard, to ensure the safety in production of gypsum mine.
Weld Seam Edge Detection Based 2D Maximum between-Cluster Variance and Genetic Algorithm
Authors: Dang Xiang Ying
Published: October 2014

For welding image after pretreatment, First, GAP predictor templates predict error image,using the 2D Maximum Between· cluster Variance (OTSU) method combined with improved genetic algorithm to calculate the threshold ,Then classified errors image edge, weld image edge was extract. Experiments show that the method to detect the weld image edge not only decrease the time complexity, but also get the clearer edges, more details, and better visual image.
Design of Campus Network Database Access Based on Encryption
Authors: Liu Fu Mei , Qu Wen Liang
Published: October 2014

Database is the core part of university digital campus platform. Database encryption is an effective method to guarantee the security of data. The paper analyze the structure design of database security model, and study the design of mode function, key features and further implementation model. The system is suitable for security protection for network database management, and has a certain degree of universality, portability and security.
Study on Coordination of Heterogeneous Databases
Authors: Liu Huan
Published: October 2014

How to coordinate heterogeneous database to realize sharing and consistency of information not only is an important research subject in the database filed, but also is an emerging research hot spot in the field of database system. As a new development direction of computer software, it applies some new techniques to integrate the existing systems to develop new applications. The paper analyzes CSCW, XML, JDBC and heterogeneous database, and proposes a solution of heterogeneous database. The solution absorbs the thoughts of database meta data, middle ware and LDAP directory service.
Study on the Financial Audit Risk Prevention Based on Data Mining Technology
Authors: Qin Bi Zhu
Published: October 2014

Along with the development of the modern economy, the financial industry is becoming more and more important. However, the global economy has begun to decline after the financial crisis occurred, so that the financial industry is seriously hit, the financial audit risks are greatly increased, and also the security problems of financial audit have gradually become the focus in the eyes of people. In this paper, the risks in the current financial audit and the necessary measures of preventing these risks through data mining technology are analyzed in depth from the perspective of data mining technology as advanced audit technology.
Research on the Enterprise Information System Integration and Collaborative Management
Authors: Tian Yu Shan
Published: October 2014

The effective coordination of enterprise information resources is maintaining its consistency, integrity and efficient utilization of inevitable requirement, but also is the main means to solve the information resource content and structure is becoming more and more diversified and complex. To realize the effective and efficient means of information coordination is the standardization of information resources, structured and hierarchical organization and management. This article first discusses the necessity of enterprise system integration, and put forward the basic principle of the integrated system. For the corresponding implementation method, this paper studied the enterprise information system integration framework based on message, overall design, system access and the message interaction design and data integration model design, to explore the access instant feasible scheme of information sharing between enterprises and internal data and external between enterprise and enterprise.
Research of After-Sales Management System of Enterprises Based on J2EE and Data Mining Technology
Authors: Zhang Guan Zhu , Zhu Yu Ye
Published: October 2014

With the globalization of market and economy, more and more enterprises realize the importance of after-sales service system. However, traditonal after-sales service system only focuses on the business process of system, and ignores important information of after-sales service data. It is data mining technique that solves the problem as a knowledge discovery technique. Data mining technique only can discover potential and valuable information and knowledge in lots of data for decision support. The paper analyzes the business process of after-sales service of enterprises, uses the idea of J2EE design mode, and expounds the development design of the system including the design of J2EE frame, functional module, system component and database.
Recommendation System Model Based on Web Usage Mining and Market Mechanism
Authors: Fang Zhao Lin , Liu Chen Liang
Published: October 2014

Firstly, the paper proposes the framework of recommendation system based on web usage mining and market mechanism. Then, the paper introduces the system structure. And the paper introduces each Agent of the system including the functions of management Agent, interface Agent, online-recommendation Agent and filter Agent. And the paper gives the operation mechanism, resource allocation mechanism, customization return mechanism and customization bidding strategy,
Study on the Architecture of Mobile Campus Digital Library System
Authors: Sun Chang Li , Liu Chang , Shi Dan
Published: October 2014

Cloud computing and mobile Internet is a new computing model based on Internet business that is a mixture of many technical results, it has the advantage of safe and reliable, massive information storage, fast and convenient. This paper mainly discusses the advantages of mobile digital library, and puts forward the mode of constructing the cloud computing and mobile Internet library based on information platform, analyzes the basic architecture of mobile library, in-depth study cloud computing and mobile Internet in library information platform access model and database model, finally the paper gives general idea to construct digital library using mobile WAP Technology.
Design of ERP Management Information System for SME
Authors: Zhao Zi Qi , Zou Xiang Rong , Li Chun Ping
Published: October 2014

Accounting and management cost is the important and difficult problem for small and medium enterprise management, but also it is the soul of ERP manufacturing system. ERP cost management system provides a more flexible cost calculation, accounting, management function, realizes the processing mechanism of business, financial integration. The paper discusses the process reengineering of the business plan based on the background of some small and medium enterprises, and set up the ERP system of enterprise. This system realizes the design of ERP system based on the powerful function of SAP R/3.
Research on Modulation Recognition Algorithm of Digital Communication Signal Based on Wavelet Denoising
Authors: Gu Xiao Yu
Published: October 2014

The paper researches a recognition algorithm of modulation signal and modulation modes. The modulation modes to be recognized include 2ASK, 2FSK, 2PSK, 4ASK, 4FSK and 4PSK modulation. There are two methods recognizing modulation modes of digital signal, method based on decision theory and pattern-recognition method based on feature extraction. The method based on decision theory is not suitable for recognition with multiple modulation modes. The core of pattern recognition based on feature extraction is selection of feature parameters. So the paper uses the feature parameters with simple calculation, easy to be implemented and high recognition rate as the core. The extraction of feature parameters is based on instant feature of modulation signal after Hilbert transformation.
Design of Household Multifunctional Aquarium Based on HT66FU50 Microcontroller
Authors: Wu Xiao Bing , Hu Qing Fang
Published: October 2014

Using HT66FU50 as main control chip, along with sensors and associated circuitry, a family multifunction aquarium is designed. It’s a fully automatic aquarium, which can monitor the water’s temperature and oxygen level, can automatic intelligent control feeding, music playing, and oxygen increasing. It also incorporates functions of status displaying, parameter setting, auto-power-off when fault, etc. This design is low cost, easy to use, and has worthy of popularity.
Research of Model-Free Adaptive Control System Based on Neural Network
Authors: Liu Ze Min
Published: October 2014

With the development of industry, the control system is more and more complex. For the nonlinear problems which can’t be solved by the traditional linear control system used now, it uses the model-free adaptive control system based on the neural network to effectively solve them. In this paper, it firstly makes a detailed analysis on the neural network, describing the neuron, the BP network and the training of neural network; then talks about the model-free adaptive control system, analyzing the structure, characteristics and algorithm of the system; and finally gives the core code of the model-free adaptive control system of the neural network. This paper provides positive effect to the industrial control staff and artificial intelligence researchers.
Image Edge Detection Based on Solitary Wave Algorithm
Authors: Zhu Zi Min , Liu Rong Qiang
Published: October 2014

Edge detection is the most basic arithmetic of the local information of image change detection, image edge detection can help people better describe or identify image, is abasic technique in image processing. Edge detection is mainly to find out the important goal of the salient points on the boundary of the image,because the traditional edge detection operators have the same direction, so easily missed in the detection process.In this paper, the solitary wave algorithm for image edge detection, this algorithm can provide both the direction and size of the image edge, a certain extent, can also solve the missing edges, it is possible to extract more accurate image information.
Design of Power Meter Reading Circuit Based on CC2430 and RS485 Bus
Authors: Liu Xi You , Wang Hong Ying
Published: October 2014

The article analyze current situation of the electric meter reading system, and given circuit of the remote automatic meter reading based on single-chip system model, and introduced in detail the key part of data acquisition, data concentrator and the monitoring center software, hardware implementation. The wiring complexity of the project has been reduced by using the technology of RS485 communication for data transmission, which has been improved the reliability of data communication system, and reduced power consumption. The results show that the terminal is normal and reliable.
Study on Detection Method of Server Intrusion for Small and Medium Sized Enterprises
Authors: Zhang Zhi
Published: October 2014

This article analyses in detail the safety hazards and risks among all levels of the enterprise from the point of view of the structure, there may be in accordance with the overall balance, principle, technology integration, propose a network security requirements of the enterprise, and further puts forward a whole network security solutions. Moreover, the paper takes Web service composition documents as the research object, through the analysis of the server, the port and address on the Web file, to establish Web intrusion detection model. The core of the model is the monitoring of host resources in Web server, finally discusses in detail the design and Realization of resource monitoring system.
Research on Computer Network Security and Prevention Strategy
Authors: Li Biao
Published: October 2014

With the development and popularization of the computer network, the security problem has increasingly become the focus of common concern. The computer network safety problems mainly include: protocol design issues, awareness, management system and technical operation. Hackers on the computer network attack techniques: Deceptive attack, masquerade attacks, vulnerability attack, covert attack and technical attack. Accordingly, we should take the corresponding safety countermeasures: strengthen network security education, using the network protection technology, detection technology and anti-virus technology. This paper mainly analyzes the defects and the security problems of computer network, discusses about the maintenance of computer network security and the way for computer network attack technology defense strategy.
The Research and Realization of Aggregation Algorithm for Aggregating Topological Nodes Based on Web GIS in Network Management
Authors: Liu Peng Fei , Zhang Shi Wu , Ma Li Na , Wang Jing Yang , Huang Min
Published: October 2014

With the rapid development of GIS, it is applied to network management gradually. We can get the distributed trend of the topological nodes and the topology relation between each other through GIS. In order to reflect the topology relation when we change the zoom level of the map, it is a critical problem that how to realize a large numbers of topological nodes be aggregated quickly and accurately. In view of this situation, this paper introduced two common aggregation algorithms firstly, and then proposed an aggregation algorithm for aggregating the topological nodes in GIS with the advantages of hierarchical clustering algorithm. The paper also explained the basic idea and realization of the aggregation algorithm. The experiment results show that the algorithm provides an effective solution for aggregating topological nodes.
Design and Development of Trade Detector Based on Distributed Computing Technology
Authors: Wang Qi , Lai Wei
Published: October 2014

J2EE is set for the distributed computing realization of API, services and protocols developed by SUN. The design objective of J2EE computer development tool is to provide a simple, easy operation development platform for developers, which can reduce the cost of development, shorten the development cycle, and improve the comprehensive performance of computer system. In this paper, we use JSP calculation vessel function module of J2EE to improve the computer economic detection system, and establish data connection between system and the HTML Webpage, which realizes the real-time and continuous detection of the economy. Finally, based on the external demand and exports of industrial products in an area, we detect trade transactions in the region, and do mathematical statistics using the J2EE system, and finally get the trade scale. It provides a new computer method for the research of export trade and economic detection.
Quick Registration Method Based on Image Region Correlation
Authors: Zhu Na
Published: October 2014

Binocular vision system can be widely used in CNC machine tools chatter monitoring, due to its simple system and automatic measurement function. Traditional registration method cannot balance the contradiction between precision and speed of registration; restrict its application in high speed monitoring system. So based on traditional feature point registration method, it proposes a new method to obtain more accurate matching feature points by using complexity distribution feature of image region to determine the distribution of feature region and the bidirectional similarity and triangle similar method, which realize quick registration. From the simulation and implementation effect perspective, this method is feasible for the image registration in high-speed monitoring system.
Linear Space-Variant Model and Restoration Algorithm of Imaging System
Authors: Qi Yao Long , Cheng Zi Yu
Published: October 2014

Imaging quality not only is one of the important criteria for the quality of imaging system, but also is the emphasis of designing a high-quality imaging system. For digital image processing, there are many methods of image restoration for images with noise pollution. The paper tries restoring the fundamental reason making imaging quality degraded, which is image error of lens. While reducing the design requirements of traditional optical system, the paper tries erasing aberration of optical image system, which can achieve good imaging quality.
Research on Integrated Simulation of Space Robot Mission
Authors: Gao Yong Ming , Sun Wen Jun , Jing Wen Bo
Published: October 2014

This document mainly focuses on the design and implementation of the space robots mission simulation system. Its overall design and achievement are put forward, some especial simulation factors are imported and integrated, such as the dynamics model, constraint model, environment model and other external disturbance. Being testified, the simulation system is capable of working out the problems, such as simulating the process of space mission, verifying the ability of in-orbit mission, evaluating the feasibility of key technologies. The total scheme provides a suit of effective method for the analysis and validation of space robot mission.
Visualization Interface and Integration Technology of Grid Information Based on Computer Database Principle
Authors: Zhang Yang You , Zhang Lin
Published: October 2014

Access can be used to develop a variety of software applications, such as financial management, sales management, financial management system, which has the advantages of simple operation, Even if the non computer professionals can master in a short period of time, and it can meet the development in many fields. In this paper, based on the option management, we establish the options financial risk management model of power enterprise, combined with MySQL database tools, and design financial risk management system of the electric power enterprise. The system has a visual interface, and the user can query and do risk prediction quickly through visualization window, which greatly improves the efficiency of financial risk management for electric power enterprise. It provides a new method for the application of computer in enterprise risk management.
Numerical Simulation Analysis of Smoke Control and Flow for Large Building Fire
Authors: You Da , Wang Xiao Zhi , Chen Wen Jiang , Wu Gui Xiang
Published: October 2014

In fluid numerical simulation calculation, FLUENT is one of the most commonly used engineering software. By the way of pressure velocity coupling, FLUENT can solve the flow field, and use the finite volume method to speed up the convergence. In order to improve the calculation accuracy, FLUENT is divided into single precision and double precision to meet the need of practical engineering. In this paper, by using FLUENT numerical simulation software, combined with UDF programming, we analyze the temperature and smoke distribution when large building fire occurs. The GAMBIT software is used for the numerical modeling, and we use Tecplot software to carry out the post processing of results. Through numerical simulation, the fire temperature value reaches 1050K without wind, while with wind the temperature is 1030K, , which is consistent with the actual situation. In the absence of ventilation condition, concentration is 0.0112; under the condition of ventilation concentration is 0.0052, which is consistent with the actual situation. Therefore in the building fire safety, the first thing to consider is ventilation, which can reduce the fire temperature and concentration and security personnel safe evacuation.
Campus Information Network Platform Based on SMS
Authors: Si Jin Ling , Song Jian Tao , Wang Bing , Lv Xin Ping , Ma Qing
Published: October 2014

Using TC35 network to build campus platform is a kind of effective method, its wide coverage, high security, and do not need to set up and maintain a private network. This paper developed a center terminal system based on TC35 module and BS structure, a complete set of solutions for hardware and software are given in the paper and achieve the information receiving and processing functions. The system is scalable, easy to use and fast, which laid a foundation for the further establishment of intelligent campus platform.
Prediction and Simulation Research of Improved Search Engine Algorithm and Model Ftting
Authors: Cai Jing , Yi Liu
Published: October 2014

With the number of college graduates is increasing year by year, digital information management for the employment of college graduates receives more and more attention of managers in colleges and universities. Establishing management information system of college graduates employment is imperative. In this paper we first discuss the theoretical concept and the common structure model of employment information management system, then according to the demand of college graduates employment and enterprise recruitment requirements design the college graduates employment management system based on Web. The system includes the graduate information management systems, enterprise information management system, recruitment information query system, students landing system. Finally, we test and do simulation on operation of the system. The result shows that the university graduates employment management system has the advantages of simple operation, safe and reliable operation. It builds a platform for the exchange of information among the university, graduates, enterprise, which facilitate the management of graduates.
Target Searching Simulation of Computer Information Technology Based on Improved Apriori Algorithm
Authors: Zhang Yang You
Published: October 2014

The fixed assets of large enterprises are the material basis for the development of enterprises, and the innovation of financial management has great significance to the economic growth efficiency of enterprises. Only by improving the using efficiency of fixed assets and reducing the production cost, it can improve the competitiveness of large enterprises. In this paper we use the AprioriTidStr algorithm to improve the Apriori algorithm, and use VB software to establish financial management index table of fixed assets. According to the index table, we establish the search association rule knowledge base of financial management target. In order to test the stability and reliability of the system, we do numerical analysis on the fixed assets investment of enterprises, and obtain the financial forecast accurate rate curve and the financial control form within one week. It provides the computer technology support for innovation of large fixed assets management.
Research on Form Material Interface Based on MATLAB Visualization System
Authors: Li Ni
Published: October 2014

In this paper, we optimize the design of accounting mathematical model of financial control by using double layers model, and introduce the M calling function of MATLAB into the design of GUI interface, which realizes visual operation of financial data processing. We use the computer hardware equipment to design the user group of school financial management, and use MATLAB visualization tool to design administrator login visualization interface and curve report of financial processing. Through the calculation we obtain the visualization display window of school financial statements, and the window can be directly generated by clicking the button on the GUI interface, which improves the efficiency of data management. Users can directly query the financial situation through report; it provides technical support for the design of university financial system.
Study on Web3D Technology in Safety Management of Petrochemical Enterprise
Authors: Chen Wen Jiang , Liu Jiao Yang , You Da , Hu Zhao Ji
Published: October 2014

For the current safety management of enterprise, this paper describes the modern safety management based on the network environment. The system of major hazard installation (MHI) and its surrounding three-dimensional (3D) geographic information simulation is developed by using virtual reality (VR) technology to establish a digital virtual environment (VE) of petrochemical enterprise. Safety information simulation of petrochemical enterprise, which can be browsed through Web page and managed by human-computer interaction (HCI), is achieved by the seamless integration with the network. The safety management system (SMS) which is characterized by networking and digitization is eventually completed. It not only ensures the fluency of resource sharing but also the VR simulation provides the government and enterprises with a reasonable command platform to implement safety management efficiently.
Analysis of Numerical Simulation and Performance Prediction in Centrifugal Pump for Warship
Authors: Wang Jun
Published: October 2014

Through the ship flow field of centrifugal pump that can be numerical simulation of three-dimensional turbulent, the paper reveals the pump flow pressure and velocity distribution. It also introduces the function of hardware and module testing system, according to the centrifugal pump performance test data, to achieve the minimum two multiplication curve fitting module using VC programming, curve fitting for the transformed data, the results show that the system is running stable, and convenient operation in the test process, simple maintenance and high reliability.
Front-End Design of High-Resolution Video Communication System Based on SoPC
Authors: Zhu Qi
Published: October 2014

Using high-resolution CCD chip and high-speed A/D converter chip, the design of the Video Communication System is given in this article, which successfully realizes the drive of the high-resolution area CCD and achieves the digital image signal. Based on the thought of SoPC’s (System on Programmable Chip) high integration, on the ALTERA company's DE2 platform, FPGA is used to achieve the driving timing of CCD, Silicon delay lines are used to properly align the pixel rate CCD clock signals with respect to one another, and the push-pull transistor circuits are designed to translate TTL level driving clock signal to the voltage levels required by the CCD. The system demonstrates some application values by analysis.
Study of Slurry Configuration and Circulation Issue of Large Diameter Bored Pile at Sea
Authors: He Gui Mei , Zhu Wei Wei
Published: October 2014

The large diameter bored pile has the advantage of large bearing capacity, large rigidity, highly construction speed as well as saving cost, of which many large bridges have adopted to basically meet the foundation construction of deep water. China’s coastline extends for about 18,000 kilometers, and covers a large area of the sea area with a large number of islands inshore. The cross-sea bridge has become the basic form to connect the islands and land. Therefore, the large diameter bored pile could be widely use in the future. Because of the construction particularity at the sea, like the changeable maritime climate, hurricane wave, tidal variation and the characteristics of the sea water will bring the risk to construction and increase the construction difficulty. Thus there are a lot of technology problems to be solved, It is necessary to go in deep study because the slurry is the most crucial step of the bored pile which will influence most of the construction quality. This paper combines the example of Jiuzhou Channel Bridge of the Hong Kong-Zhuhai-Macau Bridge to discuss the Slurry Configuration and Circulation Issue of the large diameter bored pile at the sea, and to offer the proportion of the slurry yield and fresh water mud, and also studies the circulation system of slurry, which used the Cyclone slag separator to separate the slurry, and achieved the expected effect, thus provides the available experience to the later construction.
Intelligent Robot Motion Control System Based on Immune Genetic Algorithm
Authors: Zhan Zhong Li , Wang Qiang
Published: October 2014

The robot's motion control system is the core technology of intelligent robot. In this paper based on immune genetic algorithm, we improve the intelligent robot control system, and design the intelligent robot action output system with adjustable ratio combined with the PID algorithm. The system has the adaptive adjustment function, by adjusting the proportional coefficient P, which can reduce the output error of the system, improve the adaptability of the system and accelerate the speed of motion control. Finally, we use Siemens S7-200 series products to simulate the action output, and obtain the output time and residual of action under different proportional coefficient P by simulation. It provides the technical reference for the research on control algorithm of intelligent robot.
Analysis of Mountain Highway Slope Protection
Authors: Xun Ju Sheng
Published: October 2014

Environmental conditions mountain road is more complex compared to other roads, subject to many affected, this explained the reason for the destruction of highway slope protection, and some reinforcement to optimize the design, and strive to economic rationality, the construction will be easy to put forward a theoretical basis for the construction of mountain highway.
An Improved Focusing Algorithm for Missile-Borne SAR with High Squint
Authors: Chen Yong , Zhao Hui Chang , Chen Si , Zhang Shu Ning
Published: October 2014

Due to that the Doppler parameters vary according to slant and the resolution is lower using imaging algorithm of traditional pulse compression in processing raw echo data of the missile-borne synthetic aperture radar (SAR). Moreover, an algorithm is proposed to solve these problems, which is based on the fractional Fourier transform (FrFT) for missile-borne SAR imaging. Firstly, an echo signal model is built for the terminal guidance stage of the missile-borne SAR. Secondly, measure the chirp rate of the echo signal through the local optimum processing and get the optimum angles for the FrFT, and then the entire SAR image can be obtained by using FrFT with the optimum angles of the azimuth and range. Finally, the performances of the algorithms are assessed using simulated and real Radarsat-1 data sets. The results confirm that the FrFT-based missile-borne SAR processing methods provide enhanced resolution yielding both lower side lobes effects and improved target detection. The method introduced in this paper has important theoretical significance in detection and recognition for military targets and precision guidance.
Application Progress of Nondestructive Testing Technique of Hydraulic Concrete Based on Steady Rayleigh Wave Method
Authors: Deng Zhong Jun , Yao Cheng Lin , Jia Yong Mei , Yang Yu Bo , Zhang Gui Bin
Published: October 2014

In the large hydraulic concrete structure that conventional nondestructive testing technique can’t implement quantitative detection, using steady Rayleigh wave technique can acquire various characteristic parameters of concrete. The paper introduces the principle and detection system of steady Rayleigh wave technique systematically, and makes detection experiments to introduce steady Rayleigh wave e technique and application progress of it in quality of large hydraulic concrete and nondestructive detection of crack depth. The practice proves that steady Rayleigh wave detection technique has the characteristics of strong antijamming capability and higher detection precision.
Design and Research of Blade for Poultry Indoor Ventilation
Authors: Jiang Xiao Ming
Published: October 2014

According to the design requirements of indoor ventilation, use closed die forming process of low cost to product several types composite wind turbine blade, through actual operation experiments verify the effects of different design parameters on the fan running. The results showed that the leaf size, the molding process of precise, stable quality satisfies the equilibrium requirement.
Study on Distribution of Gas Concentration on the Upper Corner by Thermal Imaging Equipment and Swirling Jet
Authors: Zhang Xiu Feng , Yang Sheng Qiang
Published: October 2014

The gas accumulation is often mine hidden danger and has become a hotspot recently. in order to analysis the coal gas distribution law, the paper determines the heat transfer and temperature distribution using infrared thermograph and swirling jet device. Based on similarity theory, it can simulate the gas concentration distribution and gas migration. Based on an experiment result, the gas accumulation can be dissipated effectively and the distribution of gas concentration becomes uniform as the time, it can be provided as a reference of rotation fan design.
Study on Buried Pipeline Floatation Response Induced by Soil Liquefaction
Authors: Deng Su Nan , Peng Wen Tao , Lin Jun Qi
Published: October 2014

On the basis of Virtual Work, in this paper, the formulae are deduced for the floatation response of buried pipeline duo to the soil liquefaction. A beam model based on the theory of beam on elastic foundation is used for the pipeline buried in non-liquefied and liquefied area, considering the effects of nonlinear soil constraint and the initial deformation, the length of liquefied area, and the axial force acting on the pipeline. The study of floatation response of buried pipeline are conducted using the nonlinear increment element method, some results are given.
A Hardware-Assisted Software Synchronization Scheme in TMR
Authors: Xiong Fei , Liu Hong Wei
Published: October 2014

Fault tolerance system is applied in kinds of critical applications, with the triple modular redundant (TMR) being the most common. But how to synchronize those modular is a problem. This paper describes the design and implementaa hardware-assisted software synchronization scheme. This scheme involves a series of synchronization APIs, which are called by application programs, and synchronization virtual device, which maintains synchronization to the voter by changing synchronization message.Finally, we implement this scheme in ARM7-based Samsung S3C44B0X CPU under μCLinux.
Programming of Mathematical Model for Comprehensive Evaluation of Individual Capacity
Authors: Huang Zhi Qin , Zhao Lian Di , Liu Dan Qing
Published: October 2014

In the 1960 of the 20th century, a new mathematical discipline-fuzzy mathematics appeared, and it grows strong unceasingly in the world. The one hand, the fuzzy comprehensive evaluation theory has been widely used in ecology, agriculture, water pollution, air quality, geological exploration, petroleum production and all kinds of areas, on the other hand, it is unprecedented that fuzzy mathematics was applied to individual competency assessment .In order to solve the deficiencies of comprehensive evaluation model for personal, this paper establish the program design of personal ability’s comprehensive evaluation mathematical model , based on the existing literature research.
Distance Measurement System of High Precision Ultrasonic Based on Data Fusion
Authors: Wang Ling
Published: October 2014

This paper presents a high accuracy ultrasonic ranging scheme based on MCU and puts forward a new method of multi sensor data fusion based on close degree and weight, finally get the expression of data fusion, so as to realize the multi sensors data fusion. The measuring range of this system is 3cm, range is 500cm, and the accuracy of measurement can reach 1mm. The work is stable in the measurement range 3cm-500cm that can meet the general requirements for measurement. The example analysis shows that the proposed method is more accurate than the traditional method, more suitable for the application and embedded system.
Thermal Floorplan Base on Conjugate Gradient Solver in HotSpot
Authors: Jiang Zhong Hua , Xu Ning , Wu Chun Xiang
Published: October 2014

In this paper, we introduce an effective iterative method to solve the thermal linear system in HotSpot thermal floorplan, the iterative Conjugate Gradient Method is suitable to solve the traditional sparse matrix linear equations. We define a class of dummy sparse linear systems in iterative thermal floorplan algorithm, the iterative methods for linear system can be extended to apply to other iterative framework algorithm. We apply the conjugate gradient method to solve the thermal model in floorplan of VLSI physical design. The experiments' result shows that thermal floorplan using Conjugate gradient method is effective. The running time of our incremental conjugate gradient thermal solver with Jocabi Precondition is approximate 0.59 comparing with LU decomposition method.
Analysis on Voltage and Reactive Power in Civil Lighting
Authors: Zhang Li Guo , Liu Zhou , He Guo Jing
Published: October 2014

Street lamp has become the essential functional unit in society for its widely use , Street lamp power energy saving has become a very worth studying problem high demand. Aiming at such a demand, this paper proposed a kind of optimizational energy saving streetlight that based on the voltage and reactive power, this article put forward such a research mainly aims at the demand of Jinan street lamp management. The research improved the grid power factor, reduced the network pressure drop and reduces the energy consumption of street lamp. It upload the master station through GPRS network real-timely, And accept command such as mode conversion, parameter setting, time checking and capacitor switching. It implements the voltage optimization function, remote monitoring and control functions on the basis of ensuring road illumination and uniformity, Which realized street light energy-saving and reduced the loss of lines and transformers at the same time. And it protect lighting lamps effectively. Examples show that the study further improved the management level of Jinan street lamp, it realized the double harvest of electricity environment optimization and electrical energy saving, Which made a great contribution to energy-saving society construction.
Design and Simulation of Signal Generator Based on FPGA
Authors: Chen Qiang
Published: October 2014

The article introduced the basic structure and the realization principle of direct digital frequency synthesizer (DDS), and analyzed main properties of DDS system, compared the different ways to achieve frequency synthesis to determine the design scheme in this paper. In addition to the realization of general waveform, the output of the system can realize any hand-painted waveform, improve the shortcomings of the current function generator, and also has the advantages of low cost, low power consumption, short development cycle, flexible design, has the very good practical value and broad application prospect.
Estimating Machine Power Consumptions through Aggregated Measurements and Machine Data Acquisition
Authors: Gebbe Christian , Klemm Fabian , Zhai Simon , Reinhart Gunther
Published: October 2014

Monitoring the electric power consumption of machines in manufacturing becomes more and more important due to rising electricity costs and environmental awareness. This paper proposes a cost-efficient monitoring concept requiring significantly fewer electricity meters. Power consumption of several machines is monitored aggregately and then broken down into the estimated power consumption of each machine by means of a disaggregation procedure utilizing machine data acquisition. In this paper the disaggregation procedure is presented, uncertainty limitations are discussed and an application example of an industrial environment is given.
Basic Investigation on Melting Operations in the Die Casting Industry to Increase Manufacturing Efficiency and Process Reliability
Authors: Ringleb Ansgar , Hirschberg Sven , Schlüter Wolfgang
Published: October 2014

The present study focuses on the inhouse melting process in front of a die casting process. The complexity and time-dependent dynamic of melting, distribution and casting process lead to the use of a dynamic process simulation approach. The goal of the simulation is to calculate the time-dependent discharge of the aluminum mass flux. Important parameters are identified and characterized by the use of a realistic process model. Thereby the influence on the analysis of parameters influence on storage, output and process stability is analyzed. It is shown that storage factor and melting capacity distribution have a significant impact. Moreover the control scheme for liquid aluminum distribution shows a strong influence. In preparation for future investigations on energy efficiency the load factor of the melting furnaces, its effects on process stability and potential for further process optimization is observed.
Residual Stresses Generated by the Combined Burnishing - Cutting Process in the Worked Parts
Authors: Brabie Gheorghe , Mustea Gheorghe , Chirita Bogdan
Published: October 2014

The cutting followed by burnishing, used like a combined process, leads to the improvement of the part surface quality (roughness, hardness, microstructure etc.) and to reduction of the costs and manufacturing times as a function of different working parameters. One of the factors and parameters that characterize the machined surface by this combined process is the residual stresses that are generated and located in the part deformed strata. The present paper analyses the results concerning the experimental determination of the residual stresses generated in the machined surfaces of parts made from magnesium alloy by the burnishing - turning combined process. The experimental investigations have shown that in the machined strata the combined process determines the occurrence of the compressive residual stresses and hence the fatigue and cracking resistances of the machined materials will be improved.
Overview on Equipment Development Ontology
Authors: Petrovan Adrian , Lobonţiu Mircea , Lobontiu Gabriela , Ravai Nagy Sándor
Published: October 2014

Within the development of products under PLM applications, ontology holds an important role. Ontology with its instances constitutes a knowledge base. In the development applications of the product, the ontology-based approaches for machine and equipment manufacturing are very few, predominant being the approaches in the field of IT. The experience of a designer in machine manufacturing can be structured in an ontology and its instances, becoming a knowledge base, which can be reused by another designer, who has never designed such a product. On the other hand, the design duration are part of the manufacturing cycle of the product. We propose that through ontology we should be able to specify the sub-assemblies in such a way that the duration of acquisition (contracting-manufacturing-delivery) overlaps the cycle of designing and manufacturing of the product which uses them. We’re trying to demonstrate that that the manufacturing cycle can be shortened and that a family of products can be developed based on this, by developing an ontological application, which combines ontologies in the field of engineering, all these by using Protégé.
Romanian-French Collaboration for Master and Doctoral Studies in "Materials Engineering"
Authors: Abrudeanu Marioara , Ponthiaux Pierre , Millet Jean Pierre , Plaiasu Adriana Gabriela , Balandraud Xavier , Grediac Michel , Huez Julitte , Stanciu Sergiu , Rizea Vasile , Dicu Maria Magdalena
Published: October 2014

Materials engineering involves knowledge of the fundamental physics, chemistry and engineering of materials in order to elaborate, develop, and use materials with superior and new properties. The research, development and applications of materials are the major reasons behind the availability, cost reduction, innovations and improvements in all the fields of industry. Master's programs are designed to give you a solid (strong) education in the materials engineering field. Students entering a Master program have already earned a bachelor's degree and have solid acquirement of engineering. The program entails coursework, examinations and an internship or other applied experience. A master report is required to obtain the masters degree based on the researches during the stage. During a Master programme the students learn to approach complex issues from the perspective of different disciplines such as: characterisation of materials, thermodynamics, structurals transformations, technology of materials, properties of surfaces or initiation on research methods. By understanding the properties of materials, materials engineers create new materials with desired properties. Students entering a Ph.D. program have already earned a a masters degree in the field of „Materials engineering". Because of the nature of specialization the Ph.D. program tends to be smaller than master program. The international orientation of the practice stage approaches to of the Erasmus mobilites. A Ph.D. typically demonstrates a person's competence in research. Ph.D. students begin by taking courses and exams, go on to taking advanced seminars and preparing dissertation research. To complete their knowledges, they are continuing by researching, writing and completeing a dissertation thesis. The doctoral-level thesis, is the culmination of a Ph.D. candidate's research into a topic and is the major requirement of earning the doctorate. A doctoral degree is obviously a more advanced degree. However, it is long. Depending on the program, a PhD could take 4-8 years to complete. A PhD programs entails 3 years of coursework and a dissertation. During this these years the independent researchs projects are designed to cover new knowledge in your field and to be of publishable quality. Doctoral study offers the unique opportunity for an individual to develope intensive and prolonged research on a particular topic, which often leads to publication. The present paper presents the association of Romanian and French university teachers to educate students to prepare a Master diploma and to continue with cotutelle doctoral studies in the field of materials engineering.
On the Kinematic Structure of Cold Forming Machine-Tools with Several Main Effector Elements
Authors: Cioară Romeo
Published: October 2014

The evolution of modern industrial society is based on the conceiving of new, high-performance machine-tools, with an emphasis on cold forming ones. Identifying new constructive and/or kinematic solutions is one of the modalities ensuring the desired progress.Machine-tool kinematics is a field allowing for the synthesized representation of the often complex structures of existing machines, thus facilitating their study upon removal of less non-essential details [, as well as for conceiving new machines starting from imposed requirements reflected in adequate kinematic structures together with their necessary logical links.Cold-forming machine-tools are a most widespread and useful category, particularly for series and mass production. Their kinematic structure is typically simple. The specific kinematics of new types of cold-forming machines, many specialised or special, is rarely addressed.A particular class of cold-forming machine-tools includes presses with several main effectors elements. In addition to the well-known double or triple action mechanical presses, quite characteristic for this category are certain automatic mechanical presses. The paper addresses the kinematics of hypocycloid automatic presses [2,, a sub-class of machine-tools developed innovatively over the last two decades following research conducted a Transilvania University of Braşov, Romania.