bluuebunny/crossref_metadata_2025 huggingface dataset:
Determination of Melting Point of Polyethylene Based on Inverse Opal
Authors: Zhao Dong Mei , Sun Li Guo , Li Jian
Published: March 2014

The thermal tunable behavior of polyethylene inverse opal photonic crystals was investigated and the mechanism of this behavior was illustrated. Based on these researches, a method of determination of melting point was established. This principle of such method is that at the temperature of above the melting point, the molecular chain of the materials started to move and caused the destruction of the ordered nanostructure of the inverse opal. This destruction could be real-time monitored by the reflectance spectra. In addition, this process could also be observed by naked eyes because the structure color of the materials was also changed. Thus, the melting point of the materials could be detected by our method without using complex and expensive analyzer.
Two Methods of Synthesizing Hercynite
Authors: Chen Jun Hong , Su Jin Dong , Yan Ming Wei , Yang Shu Lei , Liu Wen Na
Published: March 2014

Hercynite (FeAl2O4) with octahedral structure rarely exists in nature and can only be synthesized artificially. However, it is hard to synthesize high purity hercynite. To date, it is known that two main synthetic methods, sintering and electro-fusion processes, are available to synthesize hercynite. Specimens synthesized by the two processes are different in Microstructure and phase compositions. The variations are researched by SEM, XRD and EDS.
Effects of Organic Acids on Wettability of Sn-0.3Ag0.7Cu Lead-Free Solder
Authors: Tang Ming , Gan Gui Sheng , Luo Hu , Gan Shu De , Wang Qing Meng , Du Chang Hua
Published: March 2014

In the assembly of electronic products, developing good organic acid fluxes plays an important role in improving the solderability of lead-free solders. In this paper, a variety of fluxes containing 5% (mass fraction) organic acid activators were prepared. Effects of different activators on the spreading rates of Sn-0.3Ag0.7Cu solder were studied. The results show that: activity of monobasic acids are weak except for benzoic acid; dibasic acids and polybasic acids have relatively strong activity but serious corrosion and slightly less activity persistence. Compounding palmitic acid and adipic acid in the mass ratio of 1:2 as the activator, the average spreading rate of Sn-0.3Ag0.7Cu solder is 71.11% in maximum. Compounding succinic acid and adipic acid in the mass ratio of 3:7 as the activator, the average spreading rate is up to 72.49% in maximum. And solder spots are in-erratic, bright and plump, meeting the quality requirements of electronic micro-connection.
Study on the Vibration Reduction of Phononic Crystal Structural Plate
Authors: He Yu Yang , Jin Xiao Xiong
Published: March 2014

Plane wave expansion (PWE) method and finite element method (FEM) are applied to analyze the vibration reduction characteristic of the phononic crystal structural plate, and the results of two methods are consistent. The range of band gap is acquired, which certain frequent elastic wave propagation is forbidden.
A Study on the Technical Method of Drilling Micro Holes on New CMC-SiC with Femtosecond Laser
Authors: Wang Feng , Luo Jian Jun , Li Ming , Deng Yue
Published: March 2014

To solve the difficulties of processing micro holes on the CMC-SiC, femtosecond laser was used as the drilling tool in this paper. And a new type of laser beam scanning module was studied. The study confirms the feasibility of finishing the processing of micro holes whose diameter is less than 2mm on the new CMC-SiC. And the preliminary optimization of processing parameters is completed. According to the experimental results, the important factors affecting the quality of the micro holes were analyzed, and the factors are the processing power and the scanning speed. The results also show that the femtosecond laser processing technology can solve the difficulties of drilling mirco holes on the new CMC-SiC in our countrys aerospace field.
Application Research and Analysis of Bending Springback of Semi-Circular Arc Stamping Parts Based on DYNAFORM
Authors: Zeng Xin , Peng Bi You , Liao Lin Zhi , Cheng Yan Kui
Published: March 2014

Springback in the sheet metal stamping technology is a hot research subject in the sheet metal forming field. This article takes the semi-circular arc stamping parts as the objects of research. It aims at improving precision of the flanging forming parts and decreasing the bending springback. It analyzes the forming technology and deformation characteristics of flanging forming theoretically. Besides, it adopts the numerical simulation method to carry out research on the key factors influencing the forming process of semi-circular arc stamping parts (flanging and then bending) and the springback deformation, in order to find out the optimum production process scheme for semi-circular arc stamping parts.
A Molecular Dynamic Study on the Equation of State for Argon Fluid at Temperatures Near its Critical Point
Authors: Lv Xiao Bin , Yang Xiao Feng
Published: March 2014

In this paper, we have developed an empirical formula describing the equation of state of argon fluid using cluster expansion technique and commonly used force parameters. To test the reliability of the formula, we have further simulated the equation of state for argon at corresponding states employing molecular dynamic method. The comparisons have shown that the empirical formula gives much better prediction than that from the simple form equation of ideal gases and the inclusion of the third virial terms in expansions is prominently important.
Study on the Relationships of the Construction Technology and the Cost Management Based on Enterprise Quota
Authors: Zhang Wen , Zhang Li Juan
Published: March 2014

Enterprise quota is the foundation of project cost management. With the appearance of advanced construction technology, enterprise quota should be constantly updated and improved, so as to improve the level of enterprise cost management. This paper studies the impact of construction technology on cost management based on enterprise quota,and then demonstrated by the Value Engineering. From that, we know the advanced construction technology can help enterprise save the cost and improve the economical benefits.
Snow Melting from Solar Radiation to Mitigate the Road Freezing
Authors: Jang Won Suk , Sun Hong Wei , Bae Sun Chan , Kim Hee Joong , Ahn Young Ho , Park Hyung Keun
Published: March 2014

Road safety from various environmental disasters has gained much attention during construction project. Global warming has changed the weather patterns, such as regional torrential rains, heavy snow, and severe cold, and these irregular weather changes have brought huge amount of physical and human damages. In winter season, road freezing caused by snow or icing condition has increased the traffic accidents: traffic mortality is larger in winter than other seasons. In this paper, snow melting mechanism on road pavement by solar radiation and the effect of shadow and temperature is analyzed. Also, numerical analysis on snow melting is performed to provide the guideline of road design considering the solar radiation in an effort of mitigating the road freezing and reducing the traffic accidents in winter.
Prediction Model on Urban Residential Water Based on Resilient BP Learning Algorithm
Authors: Zhao Ying , Chen Xiao Ji
Published: March 2014

Urban water is an important part of urban water systems, Predicting urban residents water is the important work to ensure urban people's lives and to achieve urban water resources supply and demand balance. For BP algorithm existing problems in the training process, this paper uses resilient BP algorithm to improve it. Firstly, analysis of the impact factors of urban residents water for adjusting the prediction model; Then, the study on resilient Back Propagation algorithm, to overcome the adverse effects of gradient amplitude; Finally, the study identifies number of hidden nodes, dynamically adjust related parameters, data normalization and so on predict key steps. The results show that the convergence rate of resilient BP algorithm is faster than increased the momentum item of BP learning algorithm and variable learning rate of BP algorithm , it is simple to achieve and does not consume too much memory.
Design of AT89C52-Based Flood Prevention System Substation
Authors: Li Tie Liang , Tian Li , Qi Guang Zheng , Luo Cheng , Li Ming Yu , Guo Chang
Published: March 2014

This paper designs AT89C52-based flood prevention system substation. This system aims to gain accurate flood prevention information in real time and convey the information to the central station. The project is designed on the basis of the climate and geographic features of the city. The rainfall and water level information is collected and uploaded to the central station via GSM industrial mobile phone for flood prevention. After this substation is put into use, unmanned monitoring of flood prevention information is realized.
Expressway Service Area in Western China Fine Marketing Empirical Analysis and Countermeasure Research
Authors: Wang Jia Bin
Published: March 2014

The expressway is connected countries "artery", service area is the "artery" recharge station. In this paper, starting from empirical analysis, in-depth investigation of the Sichuan Suining service area marketing situation and the needs of passengers, were analyzed using statistical software, and puts forward some countermeasures and suggestions, hoping to give advice and suggestions for the planning and construction of Chinese western area of expressway service area.
Design for Logistics Business Process Reengineering in the Context of Internet of Things
Authors: Tan Hui
Published: March 2014

The Internet of Things system of enterprise is formed by RFID recognition system, middleware system and Internet system. The development of Internet of Things make the structure of logistics service horizontal and vertical flow changed; the Internet of Things technology application promote the logistics business system reconstruction, and also the business layer redesign condition; Aim at traditional logistics business processes, proposed warehousing, distribution, transport business process optimization and reengineering design based on Internet of Things technologies.
Analysis of Factors of Affecting Pump Efficiency in Low Permeability Oil Field
Authors: Yang Xu Dong , Zhu Duan Yin , Wei Ya Ming
Published: March 2014

Aiming at the characteristics of the production in low permeability oil field, the pump efficiency mathematic model is built. Then the factors of affecting the pump efficiency are analyzed, which include the liquid production, diameter of pump, pump depth, immerse depth of pump, stroke and stroke per time, gas oil ratio, inclined angle of pump and discontinuous production efficiency. Through the theoretical calculation, the main factors of affecting the pump efficiency is determined, which are the liquid production, diameter of pump, stroke per minute, pump depth, inclined angle and discontinuous production efficiency. According to the calculation results, it can supply the theoretical foundation for the oil production.
Research on the Model of Integrated Resource Planning Based on Externality Costs of Renewable Energy
Authors: Li Lu , Tan Zhong Fu
Published: March 2014

Renewable energy generation technologies have lower externality costs but higher private costs than fossil fuel-based generation. As a result, the choice of renewable in the future generation mix could be affected by the industrys future market-oriented structure because market objectives based on private value judgments may conflict with social policy objectives toward better environmental quality. A multi-period linear programming-based model (Resource Planning Model) is used to characterize todays electricity supply market in China. This paper incorporated the externality costs and outage costs with the long-term resource planning model in an open market. Also, the model has the objectives of maximizing the total social value. Meanwhile, the discount rate is used in the model to capture the dynamic change of different costs. A set of integrated models have been developed with some limitation, such as generation limitation, capacity limitation, annual electricity limitation, demand and demand state limitation. At last, applying the model for the resource planning of Yunnan Province in planning period shows that the decrease of the share of fossil fuel generation and the increase of the renewable energy generation which evaluates the reliability and validity of the model.
The Effects of Overconfidence in Supply Chain Systems
Authors: Wang Xiao Wei
Published: March 2014

Based on the past research on overconfidence, we present a model of an overconfident retailer who has biased belief on variance of demand. We investigate the deviation on orders and profits between him and the rational one, and then prove that what the relationship between profits and overconfidence level is. Because the overconfident retailer's profits are always less than the rational one's, we discuss how supplier could take contractual mechanisms to achieve the maximize profits of supply chain, when confronted with an overconfident retailer.
Research on Undergraduate Financial Management Practice Teaching Mode Based on Computer Network Technology
Authors: Yang Da Zhi
Published: March 2014

In this paper, the undergraduate financial management practice teaching was investiged by using computer network technology. it is a trend, and also a kind of inevitable, especially in the concept of scientific development led by the development of higher education teaching and practice. Students cultivated by undergraduate financial management course not only need to master more advanced knowledge of financial management theory, but also have the strong practice ability, especially in today's high-speed development of computer network technology, the demand of information literacy of financial professionals is higher and higher. At the same time, with the further deepening of higher education teaching reform, modern teaching method is widely used, the multimedia teaching has become a mainstream model.
Research on Formulating an Electricity Sales Price Basic Theory Based on Fair Burden Coefficient
Authors: Liang Xue , Li Bing Qing , Yang Dong Sheng , Hu Bo , Li Dan
Published: March 2014

With the improving of the electricity users requirements for power quality, traditional electricity pricing model cant meet the needs of users. This thesis first carries on the analysis of electricity cost factors, and then establishes the cost model of electricity generation companies and electricity supply companies. The formulation of electricity price should consider electricity users, electricity generation companies, electricity supply companies and state taxes. And each factor should bear responsibility of electricity price's formulation based on social fair burden coefficient. So the thesis establishes an electricity price's model based on above theory.
TAM Application to Chinese Telecom Operators Involved in the E-Government
Authors: Cao Jian Tong , You Xiao , Xin Zhan Hong , Liu Dan , Wang Bing Hua
Published: March 2014

The study targets on Guizhou telecom operator who provide E-government services in China. This study applies an expanded technology acceptance model (TAM) to explain the telecom operator acceptance by government. Five variables of TAM through telecom operators are considered including system quality, perceived usefulness, and perceived ease of use, trust and intention to use. To demonstrate the applicability of the proposed framework, a case study of evaluating the acceptance of telecom operators by government in Guizhou province of China is conducted. The results show that the proposed framework is effective in assessing the acceptance of telecom operators involved in E-government and the expanding new factor, trust is of vital importance in this model.
Research on University Library E-Learning Environment Construction under MOOCs Trend
Authors: Liu Jian Ping , Shi You Qun , Ren Zai Xin
Published: March 2014

With network education popularizing and developing, E-learning in MOOCs trend is gradually becoming one of the most important learning modes in the university. Current simple resource and service of university libraries without integrative design cannot satisfy the information needs of the customers. This paper introduces the basic elements of the MOOCs E-learning course, its technical strategies and the significance of its construction. Targeted at the demands of the users for E-learning based on MOOCs, the library should establish the cooperation mechanism between colleges on campus, office of teaching affairs and other departments, complete the integration of curriculum-based virtual and entity services, and thus enables the teachers and students to get one-stop MOOCs E-learning support services. The theoretical framework of the research and its practical application could provide some insightful suggestions on MOOCs E-learning in other university libraries.
Theoretical Research and Instructional Design of the Flipped Classroom
Authors: Zhou Guo Qing , Jiang Xue Feng
Published: March 2014

Recent advances in ideology and in method have unlocked new directions for education research. The flipped classroom is considered as the most attractive way in this discussion. The flipped classroom is a new pedagogical method, which swaps the arrangement of knowledge imparting and knowledge internalization comparing to traditional classroom. Although anecdotal evidence suggests that student learning is improved for the flipped compared to traditional classroom, it is still an open issue. According to the survey of the prior and ongoing research of the flipped classroom, we found that the flipped classroom still has a lot of room for improvement. In this paper, with an example of computer courses teaching at universities, we study a designing method of classroom interaction, design a test method of teaching effect, and construct a fully functional online learning system and a video recording platform. The paper provides an innovative way to re-form teaching in Chinese schools.
Robust Portfolio Optimization with Transaction Cost for Risky and Risk-Free Assets Coexisting
Authors: Zhu Jiang Ping , Liang Xi Kun
Published: March 2014

A robust mean-variance portfolio selection model with transaction cost is presented for the case that both risky and risk-free assets exist in the market and expected returns of assets are uncertain and belong to a convex polyhedron. The model helps investors to identify such portfolios that expectations of investors are ensured even if the worst case in the expected returns of assets occurs. Analytical expression of the optimal portfolio determined by the proposed model is derived based on the Lagrange method for constrained optimization. Empirical analysis with three real stocks is performed to give the efficient frontier of portfolios.
New Views on Tourism Resources in Changing Era
Authors: Tan Zhi Xi , Yang Jia
Published: March 2014

Tourism resources are not only the object of tourism activities, but also is the foundation of tourism existence and development in a country or region. With the development of economy, the progress of science and technology, great change has taken place for tourism resources in new era. It is necessary to refresh the connotation, denotation, and properties of tourism resources, and the concept of sustainable development of tourism resources. It has great significance for the development of tourism theory and industry.
Chinese Dairy Industry Cycle Based on Gompertz Curve Fitting
Authors: Hou Yu Dong
Published: March 2014

This paper analyzes the Chinese dairy industry cycle, which clarifies the development characteristics of the industrial cycle, introduces Gompertz curve fitting, and apply Gompertz curve fitting methods, theoretically analyses the existing cycle of Chinese dairy industry. The existing cycle of Chinese dairy industry is obtained, which provides a reference for the development of the dairy industry.
Applications Reservation Services to Improve Electricity Customer Satisfaction
Authors: Guan Ling , Pang Yan Jun , Yang Ying Ying , Tong Rui , Zhao Xin Hua , Zhang Xiao Shu , Mu Jing Long , Zhang Hua , Shi Dong Peng , Wang Qing Hao
Published: March 2014

How to improve the electricity customer satisfaction, in order to improve efficiency of power enterprises and the power of customer service to a new level rise are important issues. This paper focuses on the meaning of reservation services through the implementation of reservation services, reservation services fully proved application reached to improve power efficiency of business services and customer satisfaction purposes, demonstrating the validity and necessity of the power company active in Fushun booking service also carried out to clarify the future policy of reservation services and routes.
Appliance of New Information and Communication Technology Establishment of Information Resource Management System of "Chuandian Xiangyun" Power Supply Service Type
Authors: Peng Xiao Qiang , Gan Wei
Published: March 2014

With the constant development of SG-ERP system and information-based enterprises construction. The original model of information resource management cannot meet the needs the information system construction and deep appliance in the aspect of the efficiency of information resource management as well as the level of information service. In order to change the current situation of information system construction, an efficient and flexible information resource management system is badly needed, which can match the rapid development of information enterprise construction.
China a Stock Trading Method Based on FP-Tree Algorithm
Authors: Sun Rui Qi , Xu Tian Sheng , Qin Ai Ming
Published: March 2014

The research is based on FP-Tree algorithm for mining frequent phase sets that use hash tables and conditional probability formula stock association rules between the ups and downs, and on this basis to make a system for publishing mining information. Due to space constraints, article focuses on FP-Tree algorithm and data mining analysis and implementation. Significance of this research is that data mining for stock data integration applications. Stock data by mining association rules for the user's stock trading and trend analysis play a guiding role. It also can be applied to the stock arbitrage, long-term buying and selling contracts, and stock price movements correlations investment issues.
The Analysis of Bonding Mechanism of CBN Grains for Electroplated Superabrasive Tools
Authors: Zhi Geng , Bi Wei Yao , Tang Jia Jun , Rong Yi Ming
Published: March 2014

This paper analyzed the failure modes of single layer electroplated uperabrasive products. The bonding force is the primary factor that dominates the grinding quality and tool life. So the understanding of bonding mechanism is of great importance for improving efficiency and quality in the applications of these abrasive products. In this paper, the experimental setup similar to an inclined micro-threading process is designed to observe and measure the failure mode and maximum bonding force respectively. The relationship between maximum bonding force and bonding layer thickness is established through the experiment. In addition, failure modes are analyzed by comparing the morphology before and after the high speed bonding force test for electroplated layer.
Research on the Identified Assessment Model of Used Car Based on AHP Algorithm
Authors: Xiao Dong Ling
Published: March 2014

In the used car market, residue ratio of accuracy directly affects the accuracy of the used car's price.Therefore, it is an urgent that calculation method is a scientific, accurate and easy to operate. Based on the existing estimation methods , improvements used car residue ratio have been made.It considers the various factors that affect the second-hand cars residue ratio, borrowed ideas of AHP, and the use of MATLAB software for weight analysis, simplify complex the calculation process, so calculation of residue ratio is both scientific and simple, so that it is widely used.
Innovative Healthcare Cloud Service Model
Authors: Lin Shu Ping , Hsieh Chia Yen , Ho Thao Minh
Published: March 2014

This study aims to discuss the determinants influencing users intention behavior toward Healthcare Cloud Services (HCS) by integrating Health Belief Model (HBF), Technology Acceptance Model (TAM), Innovation Diffusion Theory (IDT), and Information System Success (ISS). Structural Equation Model is used for data analysis. The results reveal that perceived ease of use plays the most critical role on users intention behavior, followed by pleasure and perceived barriers, implying it is essential for medical institutions to strengthen users intention behavior by advocating the cloud service benefits and operating convenience. The findings hope to provide future research and managers with helpful references of customer needs and guidelines for enhancing healthcare quality in order to achieve better development and competitiveness.
Research on the Customer Knowledge Acquisition in the Network Based on the Association Analysis
Authors: Li Zhen , Guo Shun Sheng , Zhang Heng Chuan , Xiong Guo Tai
Published: March 2014

More and more customers participate in the network, resulting in a large amount of information related to the customers, it is necessary for the enterprises to gain the useful customer knowledge from these information. The paper adopts the Apriori algorithm realizing the association analysis through the JAVA language, finally, the examples are used to illustrate the effectiveness of the method.
The Design and Implementation of the Colleges Network Examination System Based on B/S Architecture
Authors: Zhao Ling Ling , Sun Qiao Yun , Liu Xiao Xiao
Published: March 2014

With the development of computer information technology, the network examination system as a new way has received more and more attention in the universities. This system is a Web application based on B/S structure, follows the software engineering design method and realizes the user login, examination question management, database maintenance, examination paper generation of examination question database, online examination management, examination score management, and other functions.
A Low-Power 1Kb PCRAM Chip with Elevated Write Performance
Authors: Fan Xi , Chen Hou Peng , Wang Qian , Chen Yi Feng , Song Zhi Tang , Zhu Min , Feng Gao Ming
Published: March 2014

A low-power 1Kb phase change random access memory (PCRAM) chip is designed. The chip uses 1T1R (one transistor one resistor) structure and titanium nitride (TiN) bottom electrode (BE) for reducing power consumption. Besides, the write property of the chip is improved by employing a ramp down pulse generator. The chip is fabricated in 130nm CMOS standard technology. The test result shows a 56% power reduction based on TiN BE compared with tungsten (W) BE, which predicts a new direction to realize the commercialization of PCRAM.
Design and Research on Product Aesthetics Based Human-Computer Interaction Graphical Interface
Authors: Cao Li Rui
Published: March 2014

In order to improve the user experience and aesthetic feeling of interactive interface of mobile products, the paper iphone Mobile graphics and interaction design as the foundation, implements the user interface design with means from visual sense (picture), auditory sense (stereophonic sounds),tactile sense (fingers control on function keys) from aesthetic observation points, develops in aesthetic human-computer interactive method, emphasizes on the interaction among humans to give users more direct, healthy and overall game experience.
Detection and Tracking System for Long Jumping Skilled Videos
Authors: Zhu Min Hong
Published: March 2014

Tracking the Long Jump Athletes in the video, trainers can more accurately analyze their action details during the entire jump, and the realization of identification and detecting of Long Jumpers in the video is essential for tracking athlete in technical video. Based on the Opencv vision library of the platform of Microsoft Visual Studio 2008, By calculating the probability distribution of the target pixel to positioning the athletes, the use of Kalman filter algorithm to predict its trajectory, to take a combination of both methods to achieve the recognition and detection of athletes.
The Implemention of a Digital SSB Modulator Based on Folding Transformation
Authors: Huang Yu Sheng
Published: March 2014

Single-Sideband (SSB) modulation is now widely used for its high band efficiency and low power consumption. In anolog SSB systems, it is usually hard to achieve high performance due to many nonideal factors of anolog components and circuits, such as the I/Q channel mismatch and temperature drift. To overcome these disadvantages, a digtal SSB modulation system based on the Weaver method is designed in this paper. In this system we creatively use the onchip ADC of the ARM processor for audio sampling. Besides, the CORDIC algorithm and the folding transformation are also utilized to reduce hardware costs in the FPGA implemention. This paper mainly discusses the theory and implemention of the Weaver SSB modulation system, and shows the experimental results on actual hardware.
A Design for Clock Synchronization Using CPPLL
Authors: Wang Xiao , Zeng Zhi Bin
Published: March 2014

High performance clock synchronization system is essential in communication transmission, which is based on the principle of phase locked loop synchronization that tracking a high accuracy, high stability reference clock source usinh low-pass filter to turn the value into voltage and to control VCO or VXCO and makes the output frequency and the input frequency to maintain strict synchronization.
Design and Realization of a Full Digitalization GMSK Modem on FPGA
Authors: Zhao Ren Cai , Hu Zhen , Li Xiao , Wu Yu Cheng
Published: March 2014

To implement GMSK modem with the characteristics of good spectrum, low complexity and fast acquisition, a full digitizationGMSKmodem scheme was proposed. Based on LUT method, the generation of GMSK signals has better spectrum characteristicand easy to realize. In receive terminal, a non-coherent digitized GMSKreceiver with fast signal detection and symbol timing acquisitionalgorithm was presented. Double sliding windows was used to conquer the influence of communication channel gain on the detection algorithm and realized within 6 symbols with accuracy. Additionally, in order to reduce the complexity of the receiver, the received signals are demodulated sample by sample in advance and then decided with the estimated symbol timing. The symbol timing acquisition algorithm proposed is realized based on a preamble sequence rapidly within only 8 symbols. Simulation results and integrated FPGA realizationprove its feasibility and superiority.
The Design and Implementation of a High-Speed and Large-Capacity NAND Flash Storage System
Authors: Li Qing , Hu Shan Qing , Feng Yang , Long Teng
Published: March 2014

Now, the quality of higher speed and larger capacity are required to the real-time storage system. This paper designs a high-speed and large-capacity storage system which uses FPGA as the master of SOPC system controlling NAND Flash chips. This system puts forward an advanced storage structure which has several NAND Flashes with multi-buses, forming a parallel pipeline design. By using the key technologies of bad block management and the ECC algorithm, which greatly avoids the influence of the invalid block to the storage system and reduces the probability of error data as well. It can not only improve the storage bandwidth and capacity substantially, but also ensure the reliability of the storage system effectively. As a result, the storage system achieves the capacity of 1.5TB and the bandwidth of 1280MBps. Also, this system uses high-speed exchange interface to link to the external network, which achieve the real-time transmission and control of data, and make the storage system standard, universal, and scalable.
Design of Integrated Circuit of Electronic Musical Instruments and Leakage Protection Device
Authors: Liu Cheng
Published: March 2014

Ethnic harmony can make the every chord has stability within tone. It can make the chord has strong logic which has the role of continuity. Functional and tonality of harmony have important relevance. Harmony cannot play the role of harmony in the application without the tonality. The national electronic musical instrument of the system treats MIC29151 as core regulator. It controls ADC0809 sampling through AT89S52 and displays output power timely. Leakage protection device achieves the leakage protection by an instrumentation amplifier AD623, voltage comparator LM2901 and CD4013 dual D flip-flop relay switch. The system can output 5V voltage stability and precise. When rate current is 1A and input voltage is 7~25V, output voltage regulation is 0.132%. When input voltage is 5.5~7V, output voltage is 5±0.05V. When input voltage is 7V, load regulation is 0.032% which is an ideal solution for national electronic musical instrument.
Automatic Regulating System Model of Thermal Power Plant Based on Single Loop Feedback Control
Authors: Su Gui Qiu , Zhang Chao
Published: March 2014

The production process of the thermal power plant is transferring primary energy to secondary energy. Loss of energy is quite large for coal machine. When using air supply machine and other boiler auxiliary equipments, saving energy, reducing energy consumption is an important way to reduce the cost. This paper first analyzes the basic principle of energy transformations generation field and principle characteristics of thermal automatic control system during the production process. On the basis of energy saving and low cost framework, according to the single loop feedback construction, we establish automatic control system model of thermal power plant. Through comprehensive cloud generator we do simulation on thermal power enterprises, the result is significant. It shows that this model can provide scientific theoretical basis for the operation mode of power generation enterprises in a certain degree.
Mathematical Model and Algorithm Design of PDCA Cyclic Block Control Based on Digital Sensor
Authors: Wu Mei
Published: March 2014

In this paper we introduce the PDCA theory into the computer communication, realize the computer cyclic block control, and get the overall arrangement network of computer sensor. In the first part we introduce the application of PDCA in computer, the second part we establish of the mathematical model of computer block cyclic control theory. In order to verify the availability of mathematical model, we designed the computer control experiment of digital sensor. After the temperature calibration of DHT11 sensor in temperature check box, the calibration data is stored in the OTP memory in the form of a program. And we use Keilu Vision2 compiler to realize the LED display of detected temperature. It provides the technical reference for the application of computer control technology.
Preparation of a Super-Hydrophobic and Self-Cleaning Coating for an Anti-Icing Transmission Line
Authors: Chen Yuan Yuan , Ji Jin Gou , Lu Ting
Published: March 2014

The super-hydrophobic coating with self-cleaning property was prepared by particle-filling method based on nanometer SiO2 (n-SiO2) and TiO2 (n-TiO2) as filler. The surface properties of the coating were tested by contact angle (CA) goniometer and atomic force microscopy (AFM). The results indicate that the contact angle (CA) of the coating is above 160°. The surface of the coating possesses a natural lotus-like micro-and nanohierarchical structure. The CA is recovered gradually from 85° to 138° with procedure the photocatalytic degradation of the oil pollutant for 7 hours. The adhesive force between the coating and icing decreases about 80% compared with that of bare glass surface and icing.
A Novel Method to Fabricate High Aspect Ratio Microcoils
Authors: Gu Wen Jun , Sun Shi , Dai Xu Han , Ding Gui Fu
Published: March 2014

In this study, we developed a new method to fabricate microcoils with narrow and high aspect ratio coil lines using TSV and UV-LIGA technology in a SU-8 mold. The combination of SU-8 and TSV makes it possible to fabricate microstructures with high aspect ratio. TSV technology resolved the difficulties of electroplating with high aspect ratio. We designed and fabricated microcoils consisiting of coil lines with widths of 15μm and aspect ratio of 2.
The Development of UC/OS Application System Based on Embedded System
Authors: Chen Li Gang
Published: March 2014

To solve the effect that the multi threading task can be achieved by the TFT of color screen, we adopt MSP430F5438 as the main controller, the main equipment of its hardware system was built by the TFT of touch screen, and the task driving function was completed by using buttons and wireless communication module and other peripherals. And we have developed the application program based on UC/OS operating system utility with the kernel structure and characteristics of UC/OS. It can be realized these function, such as digital tube display, TFT display task, multi-tasking, wireless communication, the task driving system, touch screen and low power verification task. The experimental results show that it completely meets the desired design goals, it works reliable and stable.
Pattern Generation Research of BIST Based on Low Power
Authors: Wang Yi , Xu Gui Juan
Published: March 2014

In this paper, a new BIST structure is presented, which is generated by the LFSR modified. There is no redundant single input jump test incentive, all possible test vector combinations are covered, the testing power is reduced. Moreover, the testing time do not increase and fault-coverage rate won't be affected. Experiment results on the integrated circuit 74HC42 show that the switching activity reduction can be achieved up to 64% while achieving high fault coverage, especially suitable for BIST of Integrated circuits.
The Choice of 10 kV Neutral Point Operation Mode in Fushun Grid
Authors: Liu Bo , Wang Qing Hao , Zhao Chuan Zong , Shi Xiao , Pang Yan Jun , Li Na , Ma Hui , Liu Guo Bin , Huang Zi Jun , Liu Chen Yang
Published: March 2014

This paper discusses that the capacitive current is a must of producing arc grounding overvoltage, and the method and necessary to restrain arc grounding over voltage. It also explains the concept of capacitive current and arc suppression coil, and the test method and significance of measuring capacitive current. Based on the comprehensive field test and evaluation of 29 substations, it provides the correct selection of neutral point operation mode and gives a development direction to 10 kV power network neutral point grounding method of Fushun grid.
New Product Development Model for Solar Cells
Authors: Lee Amy H.I. , Liu Tzu Ning , Chen Jian Shun , Lin Chun Yu
Published: March 2014

Global warming is a major reason for dramatic climate changes around the world. Among various renewable energy sources, solar energy is one of the most promising for environmental protection and natural resource scarcity resolution. With the technical advantages obtained from the semiconductor and TFT-LCD industries, the Photovoltaic (PV) industry in Taiwan can achieve a solid global position. Current PV products, however, still face a large obstacle due to high production cost and low PV conversion efficiency. An important source of competitive advantage, survival and renewal for firms in todays competitive market is successful new product development (NPD). PV firms need to carry out effective R&D in order to improve product quality and to obtain cost effectiveness. This research, thus, constructs a comprehensive model, which comprises fuzzy Delphi method (FDM) and quality function deployment (QFD), for implementing a NPD project for a PV manufacturer. The proposed model shall help designers to systematically consider relevant NPD information and reconcile tradeoffs among various performance characteristics in a fuzzy environment.
A Novel Structure Trench IGBT with Full Hole-Barrier Layer
Authors: Yang Ling Ling
Published: March 2014

A Full Hole-barrier Trench gate Insulated Gate Bipolar Transistor (FH-TIGBT) device structure is proposed for the first time. Compared with Carrier Stored Trench IGBT (CSTBT), which adds a carrier stored n layer between p base and n base in Trench IGBT (TIGBT), the new structure appends an n region located in the bottom of the trench gate. The result of Process and device simulations shows that the proposed device has lowered saturation voltage and larger capability of carrying current compared to either conventional trench IGBT or CSTBT. And the characteristics of turn-off time and breakdown voltage have negligibly changed. Further more, it has strongly positive temperature coefficient of on-state voltage, which means paralleling is very simple for the new device.
FPGA-Based Battery Management System
Authors: Huang Chao
Published: March 2014

This article introduces a battery management system of portable receiver or equipment based on a FPGA chip for control. This design can control the charge-discharge process and obtain the battery information through a SoPC, which can transfer the information to the upper computer for displaying and managing through the interface between the local and the network, or warn and deal with the abnormal condition according to the information. This design can be widely used in portable embedded system or digital system for power supply.
Study on the Influence of Air Resistance on the Mechanical Structure Based on the Theory of Elastic-Plastic Mechanics
Authors: Ji Yan Xia , Song Hai Sheng , Liu Zhe Jian , Gao Bin
Published: March 2014

This paper establishes two-dimensional mathematical model and three-dimensional mathematical model of the mechanical structure elastic-plastic mechanics and according to Hooke's law and Drucker postulate analyzes the plastic relationship of the elastic-plastic mechanics. The first part of the paper introduces the parameter setting of finite element analysis of elastic-plastic mechanics. The second part establishes computer simulation model of elastoplastic. Finally, it analyzes bolt force using ANSYS software and applies it to computer simulation of elastoplastic force and air resistance of gymnast in the process of action showing which provides technical reference for the training of gymnasts.
66 kV SVC Light Control Water-Cooled Valve Protection and Application
Authors: Xu Jian Guo , Dong Jun , Zhang Hao , Pei Yu Jie , Li Xian Feng
Published: March 2014

Improve power quality problems, the company introduced the "tag through 66kV Static dynamic reactive power compensation device (SVC)", which means water cooling valve parts, using the international advanced technology and light control thyristor, the real control cabinet and valve all-fiber connections between groups, no valve trigger circuit boards, etc., to ensure safe and reliable high-pressure environment. Light control while protecting 66kV more stable water-cooled manifold, also designed the various protection functions. Reactive power compensation device based on electrical design principle, the protection of the valve design principles, summarized the valve characteristic is a light-controlled thyristor trigger and pulse trigger laser fiber distribution device as one of the valve, the valve overcurrent analysis protection, undervoltage protection, return status display, RC protection, BOD protection, protection and cooling system valve structural protection, light control demonstrates the necessity of 66kV water cooling valve protection; through the reactive power compensation and benefits case situation the comparative analysis to verify the correctness of the application of SVC devices.
The Research of 10 kV Feeder Automation Based on the Upper PC System
Authors: Du Yu He , Piao Zai Lin
Published: March 2014

As the basis of power distribution network automation, the feeder automation plays an important role in the distribution network. The traditional feeder automation system has a long fault isolation time, the frequent switching and outgoing and then overlap power filter troubleshooting repeatedly. 10 kv feeder automation system in the thesis is controlled by the upper PC computer system and the lower machine system, and the lower machine system's intelligent controller collects the operation information of the voltage and current of the line being monitored in real time with AC-sampling technology, and through the GPRS wireless communication network will field data is passed to the remote control center. When the short circuit faults occur, the controller will immediately disconnect the switch, and the incorrect information will be sent to the remote control center, the remote control center to collect incorrect information from all the controllers, then provide the fault judgment and control strategy through relevant logic. Practices have proved that the system could improve the level and reliability of power distribution network effectively.
Alternative Method of Progressive Eigenvalue of the Unbounded Jacobi Matrix
Authors: Wang Fa Xing , Zheng Ying
Published: March 2014

This article introduces the alternative principle of progressive characteristic of unbounded Jacobi matrix into the process of automatic control of circuit which makes the feedback signal of control circuit has two different delay characteristics using unbounded Jacobi matrix. It also adds the weight of transconductance unit. The voltage signal can output smoothly which reduces the oscillation of the circuit and improves the accuracy of the circuits automatic control. This paper studies the control role of unbounded Jacobi matrix on the circuit using experimental method and gets the I / V curve. From the curve, we can concludes that the I / V of the circuit is not constant. The boundaries of linear region and the saturation region correspond with unbounded Jacobi matrix theory. Linear and saturation regions have no obviously transition boundary which applies unbounded Jacobi matrix to the automatic process of circuits successfully.
Design of Virtual Function Signal Generator Based on Sound Card
Authors: Si Hui Ling
Published: March 2014

In this paper, the use of Lab VIEW virtual instrument development platform, designs the virtual function signal generator based on sound card. The instrument can generate sine wave, square wave, saw tooth wave, triangle wave, gauss white noise, superposition of sine wave, custom formula waveform, it can be arbitrarily set parameter as frequency, amplitude, phase, the noise standard deviation, it has simple operation, good interaction, it save the cost and can be widely used in scientific research and experiment teaching.
A Solution of Vehicle Emission Inspection Using RFID Technology
Authors: Shen Peng , He Jia Liang , Feng Hai Yang
Published: March 2014

Vehicle emissions are harmful to our environment, so engine maintenance, particularly the catalytic converter is very necessary. Mandatory vehicle examination cannot be taken easily for each vehicle, so it is difficult to enforce the vehicle owners on monitoring the health of their engines daily and taking immediate action to solve their vehicle emission problems. In this paper, we propose a solution framework of vehicle emission inspection by RFID through petrol station.
The Fault Diagnosis of Wind Turbine Gearbox Based on QGA—LSSVM
Authors: Jiao Bin , Gao Zhi Wei
Published: March 2014

A quantum genetic algorithm (QGA) with good global optimization ability and fast convergence speed is proposed to solve the parameter selection problems of least squares support vector machine (LSSVM) on wind turbine gearbox fault diagnosis model. The method can convert the LSSVM model parameter selection into optimization. It overcomes the problem that GA is easy to fall into local optimum in the optimization process and it also improves the optimization performance. A series experiments are carried out on the data sets of UCI database. Compared with GA—LSSVM and CV—LSSVM, the classification accuracy is improved. Finally QGA—LSSVM model is applied to the wind turbine gearbox diagnosis and a good result is achieved.