bluuebunny/crossref_metadata_2025 huggingface dataset:
Application Research of Neural Expert System on Diseases and Insects of Fruit Tree
Authors: Li Hong Juan , Zhang Shu Mei
Published: March 2014

Information technology includes neural networks, ontology technology, expert system, and so on, and the growth model can predict and manage growth conditions of fruit trees. The traditional expert system has shortcomings of poor self-learning ability, so the improved expert system is used to perform diagnosis of diseases and insects of fruit tree. Firstly the ontology is used to collect related symptoms of diseases and insects of fruit trees, the expert system and neural network are combined to build the prediction model of diseases and insects of fruit tree, then the conclusions of the diagnostic process are regarded as the input neurons and output neurons of neural networks, and are diagnosed by expert, so the prediction models of disease diagnosis of fruit trees are made. The models can implement the function of expert diagnosis and prediction, and provide technical support and management decision for the growth management of fruit tree, greatly improving the diagnosis efficiency of diseases and insects of fruit tree.
Innovative Research on Enterprisers Selection Evaluation and Application in China
Authors: Mao Hui Yuan , Xin Liu
Published: March 2014

This paper applies the approach of literature analysis to induce and summarize the index element of entrepreneur's selection and evaluation, and constructs the index model of entrepreneur's selection and evaluation. The paper uses factor analysis of statistical theory to fit and apply the model, sequence and analyze separately according to comprehensive score and single factor score which provides scientific evidence fairly and reasonably for the choice of entrepreneur.
An Innovative Research on Customer Value in Green Real Estate Enterprise
Authors: Feng Yu , Yin Jian
Published: March 2014

With the rapid development of China's real estate industry, customers demand for real estate products has changed from the satisfaction of one single criteria to a much more diverse and individualized developmental orientation. But the value evaluation for real estate products varies from person to person, which leads to different customer value. In our country, as one branch market of the real estate industry, the green real estate market should get a thoroughly understanding about the composition of customer value, identify the target customer demand, provide more innovative value for customers, inspire and guide the customer purchasing behavior. This paper, through an analysis of the composition and affected factors of the customer value in green real estate enterprise, aims to conclude the methods for the optimization and innovation of the customer value in green real estate enterprise.
The New Carriers Research of Government Purchasing Social Services
Authors: Wang Yu Long
Published: March 2014

That government purchase social services is the development trend of modern social management system and the reformation of government functions, Guangzhou city family comprehensive service center as a new carrier of government purchasing community service, which is undergoing the test of practice from creation to city's promotion. In this paper, by studying the "family comprehensive" operation mechanisms are being implemented, from the people, social workers, "family comprehensive" undertakers and "family comprehensive" services items and other aspect, its existing problem and the reason are analyzed, on this basis, feasible suggestions and countermeasures are proposed from the two perspectives of government and " family comprehensive".
Research on Grid-Connected Optimization Control Strategy Based on Microgrid Real-Time Price
Authors: Li Jia Ming , Li Peng
Published: March 2014

When in grid-connected operation, the microgrid exchanges power with main grid as a whole, real-time price was analyzed on the basis of binary chaotic particle swarm optimization algorithm. Through imulation, it was verified that the control strategy taking into account the real-time price is economical and reliable.
The Application Study of the Cloud Computing in Universities
Authors: Liu Xiao Hong
Published: March 2014

With the rapid development of the information, universities have invested a lot of money in construction of information, but there is low utilization ratio, which seriously restrict the development of information. How to effectively integrate resources, cloud computing technology provides a feasible solution, the paper combined with cloud computing technology, provides the reference for the information construction of universities.
Application of Computer Technology in Financial Management
Authors: Yang Da Zhi
Published: March 2014

Combining the computer technology with the enterprise finance,it is very good to improve the financial management level.This paper mainly introduces the main content of computerized financial management,analyzes the practical significance of computer financial management,finally,on how to make better use of computer technology to better financial management service and puts forward some constructive suggestions.
Research of Port Container Management System Based on RFID
Authors: Chen Yang , Zhang Qing Ying
Published: March 2014

Based on the port container process, this paper studied RFID technology and constructed a port container management system, to explore the port container intelligent management and its effect on the quality and safety of container transport.
The Design of Hotel Management System Based on Iris Recognition Research
Authors: Xu Li , Jiao Nian Tao
Published: March 2014

With the development of tourism hotels industry have got great development, and it is popular to introduce computer services and computer management in daily work. Meanwhile, hotels industry introduces computer services and management has also got a good economic and social benefits. So, the Ministry of Construction made a decision: Any star hotel's design must include a computer management system when it's in the project approval, otherwise, it will be refused. It is clear, the computer management of clients is imperative in hotel.
Implementation on Data Layer Component for Music Equipment Accounting Treatment System
Authors: Lv Xin Xin
Published: March 2014

With the national efforts to increase investment for quality education and an increase in the number of college enrollment music class students, so the college needs more music equipments. And the music equipment management is always one of the challenges for colleges and universities. Accounting treatment system is the core part of the music equipment management system, and this paper carries on study based on SQLServer database and ADO.NET framework. First, database design which includes conceptual structure design and logical structure design should be conducted; then, ADO.NET architecture can be researched, including the description of the structure model and its components; finally, studying the implementation on data layer component which includes the process when creating solutions and the three main processes when implementing data layer component. The successful use of research results in this paper will certainly improve the quality of development efficiency of music equipment management accounting treatment system and promote information construction in colleges and universities.
Persistence Design on English Test Questions Library System Based on Hibernate
Authors: Zhou Jin Hua
Published: March 2014

English test questions library based on computer technology and English test theories, is a collection of digital test question and test papers, to achieve the scientific and efficient management of test questions and test papers. For difficult problems in college English test questions library system construction, this paper studies the persistence design on English test questions library based on Hibernate. Firstly, research on Hibernate architecture, and through graphics to display; Then, test questions library structure design, including conceptual structure design and logical structure design; Next, the design rules of persistent classes and design examples; Finally, the Hibernate mapping files related elements are described, and carries on the example design. Research method has the object/relational database mapping, transparent persistence, low invasive, good transplantation, and other advantages.
Design on Structure and Integrity for Foreign Language Network Learning Resource Library
Authors: Du Lian Yan
Published: March 2014

Network learning resources is accompanied by computer technology, communication technology and network technology developed new educational resources, for foreign language teaching providing a variety of teaching materials. For difficult problems in foreign language network learning resources construction, the paper based on SQL Server database management system to study resource library structure and integrity design. It based on requirements analysis and systems involved in language classes, resource types, resources, resource files, resource evaluation five entities, the part of structural design consisted includes conceptual design and logical design, the part of integrity design includes entity integrity design and referential integrity designs. This article provides practical solutions for foreign language learning resource library construction, for improving the quality of teaching foreign language has great significance.
Test Paper Composition Design on College English Examination Based on Genetic Algorithm
Authors: Yan Cong
Published: March 2014

College English examination is an important part of university English education, for the difficult problems in the process of examination organization and management, in this paper, the intelligent test paper composition research based on genetic algorithm. First, basic research, including the basic idea of genetic algorithm, algorithm flow and perform operations on groups; then, studies test paper composition model, the test paper problem described as question number, question types, difficulty, discrimination, score, answer time, using the frequency property and other attributes, constituted seven dimensional vector. Finally, test paper composition design, to generate the initial population, fitness function design, operation operator design, algorithm terminates and others, four key steps were designed. The content of this paper to meet the quality and speed requirements of university English test paper composition, and has the advantages of randomness, scientificalness and so on.
Study on Architecture of Power Marketing Management Information System Based on Web Service
Authors: Liu Hui , Zhang Zhi Hong
Published: March 2014

A multilayer distributed structure based on web service is put forward. The layer structure of power marketing business is described, based on the layer structure. The paper deduces that every business can be encapsulated by web service and each of them can communicate easily. The connection between the power marketing management information system and other systems is analyzed, and then the use of web service is presented to realize the integration between this system and the related systems. In the end, with the real example of a power marketing management information system, the solution for web service and the corresponding codes are presented.
Advanced Manufacturing Technology – Virtual Manufacturing
Authors: Xie Guo Ru , Xie Wei An
Published: March 2014

The main indicators of manufacturing companies competitiveness are time, quality, cost and related services, which make the manufacturing transform into new mode quickly. Manufacturing companies need flexibility and agility, so virtual manufacturing technology appeared. Virtual manufacturing is based on information technology, simulation technology and virtual reality technology. It can obtain many kinds of information by the aid of virtual environment. Before the design and manufacture of the product or system, virtual manufacturing can help people experience the performance and assembly relations of future product. Thus it can help people make decision and optimization scheme predictably.
Research of Case-Based Teaching of Electrical and Electronic Technology
Authors: Wu Cheng Yu , Fang Wei
Published: March 2014

Electrical and electronic technology is a foundation course in universities and colleges of technology. Some methods and suggestions of case-based teaching are presented in this paper with respect to the rational design of teaching content, effective design of assessment methods, construction of course website, teaching case library and simulation library.
Application of Markov Chain Analysis Method to Evaluate Sports Teaching Quality
Authors: Cao Xu
Published: March 2014

The evaluation of sports teaching quality is important to the development of school sports and teaching reform. Having consulted some research papers and multiple teaching methods, the authors tried to apply Markov Chain Method to the evaluation of sports teaching quality. The result shows that Markov Chain Method is scientific in reasoning, reliable in calculation and feasible in practice. It can reflect the teachers' teaching quality and the students' learning results all-sided and correctly. Therefore, Markov Chain Method is an ideal method for the evaluation of sports teaching quality.
Design of an Initialization Circuit Used in Phase Change Memory Chip
Authors: Wang Qian , Chen Hou Peng , Zhang Yi Yun , Fan Xi , Li Xi , Hu Jia Jun , Song Zhi Tang
Published: March 2014

Design of a novel initialization circuit is presented in this paper. The initialization circuit is used to supply initialization current to the first test of phase change memory chip after delivery. Inhomogeneous crystalline grain sizes appear in phase change materials used in memory cells during manufacturing process. The crystalline phase with low resistance will convert to amorphous phase with high resistance after initialization, which is called RESET the memory cells to 0. Normal RESET operation current is not high enough to RESET great grain, which deteriorates bit yield of phase change memory chip. In comparison, the higher initialization current will increase bit yield observably.
Reduced Order PEEC Modeling for EMC Problems via Mixed Arnoldi Algorithm and Padé Approximation
Authors: Song Zhen Fei , Xie Ming
Published: March 2014

The Partial Element Equivalent Circuit (PEEC) method is a 3-D full-wave modeling method suitable for combined electromagnetic and circuit analysis, and now is one of the promising numerical methods for Electromagnetic Compatibility (EMC) modeling. Model order reduction (MOR) techniques provide a feasibility to approximate complex circuit models with compact reduced-order models, and have great potentials to improve the computational efficiency for complex modeling problems. An effective MOR technique basing on mixed Arnoldi algorithm and Padé approximation for the PEEC modeling is introduced in this paper. Numerical simulations of a typical coupled micro-strip line EMC problem indicate the effectiveness of the proposed methods.
Power Distributing Network Client Query Methods Based on Tree Structure Database
Authors: He Jiang Tao , Lu Zhi Guo , Zhang Rui Dong , Gong Qiu Jing , Long Fei
Published: March 2014

On the basis of expounding the necessity of establishing power distributing system fault diagnosis visualization systems, the outage situation automatic notification and equipment failure query plan of distribution network is proposed based on database. Firstly, the information of electrical diagrams of distributing system should be input into database. Secondly, the information in the form of a tree structure will be displayed in WPF by programming. Meanwhile, we can add annotation to electrical diagrams by programming. When the distribution system malfunctions, dispatching operation control personnel enter the point of failure, the cause and outage time and the details of the regional head of a power outage will be shown. Then he responsible person will be informed by SMS. In this way, we can reduce blackout time and achieve the standardized management of distribution network. When needing the working condition of any device, just enter its name and the information will be shown.
Performance Simulation of an EM-Based Iterative Receiver for Underwater Acoustic OFDM System
Authors: Zhang Yan Fei , Wang Ying , He Rong Xi
Published: March 2014

In this paper, an expectation maximization (EM) algorithm based iterative receiver is utilized in the underwater acoustic OFDM system to improve the spectrum efficiency. A relatively smaller number of pilots are used to determine the initial value for the EM-based channel estimation process. The intermediate estimates of the channel state information generated by the EM algorithm are fed forward to the BCJR decoding unit to achieve the a posterior probability of the transmitted bit sequence. The a posterior probability is then fed back to the EM algorithm to estimate channel state information. The iterative receive process is expected to realize a better channel estimate and bit error rate (BER) performance. Simulation results demonstrate that the EM-based iterative underwater acoustic OFDM system has a fast convergence property, and can achieve a low mean square error (MSE) for the channel estimation and a near optimal BER performance.
The Control System Design of Current-to-Voltage Converter Circuit Based on SCM-PC System
Authors: Zhong Ying
Published: March 2014

Supply Chain Management (SCM) is an advanced management mode. But, the application in computers, circuit and automation control is still relatively little. This paper uses the principle of forward difference and Internet SCM control model to design Internet circuit control SCM-PC control system. This system prepares matlab control algorithm using SCM Management thought through the conversion principle of computer SCM signal. This system converts analog signal into digital signal using RCV420 current-voltage converter. It identifies digital signal using A / D converter of PC which achieves Internet automatic control of circuit. 3D result display of the information flow provides a technical reference for the application of computer in circuit and signal control.
A Strategy to Enhance Converter Continuous Current Mode in PV MPPT System under Low Solar Irradiance Situation
Authors: Utaikaifa Kasem
Published: March 2014

Typically photovoltaic (PV) maximum power point tracking (MPPT) system concerns in PV output power at specific high solar irradiance. Poor response may be found when load side characteristic is considered particular at low solar irradiance. A novel PV MPPT scheme is present by integrating load power signal into MPPT control signal. The simulation results show that the proposed MPPT system can be operated efficiently at significantly lower solar intensity compared to those of the conventional P&O MPPT system.
The Analysis about the Impact of HVDC Monopole Operation on a 220kV Station
Authors: Liu Rui , Duan Shu Ning , Chen Fen Fen , Xiao Shi Wu
Published: March 2014

With the wide application of high voltage direct current, it also created some problems, such as transformers dc bias. This article describes the impact on the transformer of the operation of HVDC monopole mode, introducing the model used in the soil and the ground electrode potential distribution, it also calculates the ground voltage in the case of a single or double ring grounding .Besides this paper describes the potential level of the two layers of soil structure calculation method and uses this method to analyze the influence on 220kV station of the 500kV Tian-Guang HVDC monopole operation mode. The conclusion is that the operation mode has seriously affected the station.
Electromagnetic Characteristic of Sensitive Field on Compare Electrical Capacitance Tomography with Electrical Resistance Tomography
Authors: Gan Qing Yu , Su Li Ping
Published: March 2014

The electromagnetic characteristic of sensitive field of Electrical Capacitance Tomography (ECT) was compared with that of Electrical Resistance Tomography (ERT) applying Finite Element Method.The math model of ECT and ERT were deduced respectively, then their electromagnetic characteristics of sensitive field and their relationship were evaluated using finite element method, which laid the foundation of theory for information fusion in ECT&ERT-compound system.
Analysis of Surge Arresters Cavity Humid Caused Flashover Accident
Authors: Wang Qing Hao , Gu Cheng Zhao , Shi Feng , Wang Wei , Jin Xin , Zhao Chuang Zong , Fang Bo , Zhang Wen Guang , Wang Yi
Published: March 2014

Metal oxide surge arresters cavity invasion along the humid, causing flashover discharge incidents, through the structure and assembly of metal oxide surge arresters construction process, discusses the causes MOA damp for various reasons. Test methods can be found listed MOA cavity invasion humid, and described the purpose of the various test methods and their respective advantages and disadvantages, while noting that the invasion is suspected cavity defects humid or with a family of metal oxide surge arresters, various test cycle should be shortened and comprehensive analysis, judgment, to prevent accidents of various test data.
The Wiring Method of the Transformer AC Withstand Voltage Test
Authors: Li Yan , Wang Qing Hao , Wang En Lu , Cong Pei Yan , Huang Yu Xia , Meng Yu , Liu Chuan Bo , Zhang Ning , Zhi Li , Qi Yi Ce
Published: March 2014

This paper briefly expounds the determination of transformer pressure value, and introduces the principles of power frequency ac withstand voltage, variable frequency series resonance withstand voltage and multi-frequency induced withstand voltage. It also expounds the ac withstand voltage wiring method, and demonstrates a simple way in withstand voltage test on low voltage winding.
The Analysis of a Transmission Line Crosstalk in the Time Domain Based on First-Order Upwind
Authors: Gao Yin Han , Wang Tian Hao , Zhang Jun Dong , Yang Kai Yu , Zhu Yu
Published: March 2014

This article will combine the difference scheme of first-order upwind with the multi-conductor transmission lines equation to analysis the multi-conductor transmission lines crosstalk in the time domain. First-order upwind is a finite difference algorithm in the time domain; it has a first order accuracy, in the discontinuous solution there is no non-physics-oscillation, when simulate the signal. The flux splitting method which is applied to the first-order upwind solved the problem that the characteristic line direction of the wind type make plus or minus transformation along with the coefficient, make the programming simple. In this paper, simulation results of transmission line crosstalk in this algorithm will be compared with the traditional leapfrog scheme, to verify its effectiveness.
Research on Mechanism of Fluid Flow Characteristics in a Stirred Tank with Stirrer Composed of Perturbed Six-Bent-Bladed Turbine
Authors: Luan De Yu , Zhou Shen Jie , Duan Hu
Published: March 2014

The power consumption and pressure distribution of Newtonian fluid and pseudoplastic fluid in a stirred tank with stirrer composed of perturbed six-bent-bladed turbine (6PBT) were calculated by CFD combined with laminar viscosity model. The test liquid used were glycerine and 1.25% (wt) xanthan gum solution, a pseudoplastic fluid with a yield stress. Compared with the stirrer composed of six-bent-bladed turbine (6BT), the effects of the 6PBT impeller on fluid pressure distribution were extensively analyzed, and the Coriolis force role of strengthening swirling motion and efficient agitation mechanism of 6PBT impeller were made a thorough inquiry, respectively. Results show that 6PBT impeller can lead to an energy saving effect as the increasing speed, and generate a larger low pressure region in flow field at the same time, so this is more beneficial to the whole circulation. Moreover, the stronger swirling motion may emerge in stirred tank with 6PBT impeller under the action of Coriolis force, which is exceedingly advantageous to promotion of mixing efficiency. As a result, 6PBT impeller is found to have a obvious superiority on mixing process of pseudoplastic fluid. The research results provide valuable references and instructions for the development of new type impeller.
A Monitoring Model of Rebound Effecting for Technology Transfer
Authors: Feng Xiu Zhen , Nie Qiao
Published: March 2014

Technology transfer has been fundamentally involved in regional economy development, which could be extremely complicated impact on sustainable development from both resource consumption and environment quality. To measure the impaction of technology transfer on sustainable development, a monitoring model was constructed based on an existed rebound effect model, which included technology transfer and typical variables regarding resource consumption and environment quality. The contribution of this model has twofold. One is to monitor the impaction of technology transfer to sustainable economic development with rebound affections. Another one is to extend the rebound effecting study with specific technology transfer influences on resources and environment.
Geomagnetic Reference Map Denoising Based on Singular Entropy
Authors: Zhu Zhan Long , Yang Gong Liu , Wang Yan Yong , Liu Yuan Yuan
Published: March 2014

To weaken the noise disturbance of GRM and improve the matching precision and matching probability of inertial/geomagnetic system, this paper proposed a method for denoising based on SVD. Firstly, from the perspective of information entropy, the singular entropy is introduced and the inner link between singular entropy and signal-to-noise ratio (SNR) is analyzed. Secondly, the method based on the asymptotic characteristic of the probabilities associated with the different singular values order (SVO) is proposed. Lastly, by utilizing practical GRM, the denoising analysis about the proposed method is demonstrated and later simulation experiments of GMN are accomplished. Simulation results show that the method is feasible and reliable.
Design of Remote Detection System for Mooring-Rope Force of Offshore Cage Based on Wireless Ad Hoc Network
Authors: Wu Hong Liang , He Zhen , Liu Can
Published: March 2014

In order to facilitate studying real-time mooring force of offshore cage, based on the combination of ZigBee and GPRS technologies, the secondary development was conducted, the detection system of mooring force was designed. It was mainly designed the overall system solution and integrate the system hardware architecture, the development of the software programs of analog-data acquisition, ZigBee networking, remote data transmission and the server were designed. The system test results show that the data could be effectively transmitted between the terminals and server. This system is small in size and low power consuming which can be used as a remote detection tool of mooring force in process when studying on offsore cage aquaculture.
Fault Detection Technique Based on Fine Grained Slicing Spectrum
Authors: Guo Xi
Published: March 2014

Test coverage information is usually used to compute the suspiciousness to locate the software errors in the current fault localization techniques, but this technique usually do not consider the reliance information within the target program, and the precision is also very low. A novel fault localization technique based on fine grained slicing spectrum is proposed in this paper, which can increase the efficiency of fault localization. This technique analyzes the reliance information under fine grained level, and selects the check points which are prone to be faulty, and the faulty statements is located according to the suspicious result. Experimental results show that this technique has better efficiency than the current techniques.
Design of Data Management System for Remote ECG Monitoring
Authors: Zhang Jin Ling , Wang Jun , Shu Lei , Zhang Sheng
Published: March 2014

This paper presents a design schema about remote electrocardiograph (ECG) monitoring system. There are three parts in this system which include hardware detection system based on MSP430, Zigbee wireless sensor network and data management software system on PC. This paper mainly provides information for study and design of the data management software system using visual C++ program to realize immediate communication of medical monitoring. The data management software system will achieve many functions such as serial communication, real-time dynamic display of 12-lead ECG waveform and physiological parameter which include Heart Rate (HR).
Study on Structural Properties of Gallium and Titanium Doped Zinc Oxide Films Deposited by Magnetron Sputtering
Authors: Chen S.B. , Zhong Z.Y.
Published: March 2014

Thin films of transparent conducting gallium and titanium doped zinc oxide (GTZO) were prepared on glass substrates by magnetron sputtering technique using a sintered ceramic target. The microstructural properties of the deposited thin films were characterized with X-ray diffraction (XRD). The results demonstrated that the polycrystalline GTZO thin films consist of the hexagonal crystal structures with c-axis as the preferred growth orientation normal to the substrate, and that the working pressure significantly affects the crystal structures of the thin films. The GTZO thin film deposited at the working pressure of 0.4 Pa has the best crystallinity, the largest grain size and the lowest stress.
Source Apportionment of Heavy Metals (Pb, Cd, As, Hg) in PM2.5 and PM10 in a City in China
Authors: Li Zhuang , Zou Run Li , Li Juan Sheng , Huang Jin , Zhu Bang Hui
Published: March 2014

In this paper, the contamination of heavy metals in atmospheric particles of PM2.5 and PM10 in a city in China was analyzed, meanwhile the sources of different heavy metals (Cd, Hg, As and Pb) in atmospheric particles (PM2.5 and PM10) were confirmed by source apportionment in a city in China area through principal component analytical method. The research results showed that the heavy metals in PM2.5 and PM10 contaminated the atmosphere environment dramatically. The heavy metal Cd, Hg and Pb came mainly from incomplete combustion of petrol, while the heavy metal of As was the product of electronic metallurgy, which provides the theoretical basis for controlling of atmospheric heavy metal contamination. This method can be also applied to source apportionment of other heavy metals in atmosphere environment.
Study of Solubility of WO3 in the NaCl-KCl-NaF-WO3 Molten Salt
Authors: Li Jie , Pei Yang , Li Yun Gang
Published: March 2014

The solubility of WO3 in NaCl-KCl-NaF-WO3 molten salt system was measured by isothermal saturation method. The results show that in the molten salt system when the temperature rise to 700 °C the saturation time of the WO3 dissolution time is 6 hours. When the temperature rise to 730 °C from 700 °C the saturation time of the WO3 dissolution time needs 80 minutes. As shown in the XRD pattern, there are NaCl, KCl, NaF, WO3, Na5W3O9F5, Na3WO3F3 and NaWO3F in the molten salt.
Effect of Temperature on Solubility of WO3 in the NaCl-KCl-NaF-WO3 Molten Salt
Authors: Li Jie , Pei Yang , Li Yun Gang
Published: March 2014

The solubility of WO3 in NaCl-KCl-NaF-WO3 molten salt system was measured by isothermal saturation method. The results show that in the molten salt system the solubility of WO3 increased with the increase of temperature from 700 °C to 820 °C, and the relationship between solubility and temperature is approximately linear. As shown in the XRD pattern, there are NaCl, KCl, NaF, WO3, Na5W3O9F5, Na3WO3F3 and NaWO3F in the molten salt, so the dissolution of WO3 is the result of both physical dissolution and chemical dissolution.
Study on Sulfur Retention Characteristics for Bio-Briquette
Authors: Su Gui Qiu , Zhang Chao , Lu Hong Bo
Published: March 2014

The sulfur retention mechanism of bio-briquette combustion is analyzed in the paper. The experimental research is carried out on the influence factors of biomass content, with inclusion of combustion temperature, Ca/S ratio, sulfur retention additives. The results indicate that when Ca/S ratio is equal to 2 and the combustion temperature is 850°C,the sulfur retention efficiency of low sulfur bio-briquette exceeds 60%.The rising trend becomes slow when Ca/S ratio is higher than 2.The sulfur retention effect will be reduced over 950°C. Using Fe2O3 as sulfur retention additive can significantly improve the sulfur retention capability of bio-briquette.
Effects of Copper Extraction-Stripping Loops on Entrainment in Aqueous Raffinate
Authors: Liu Yan Jun , Liu Xiao Rong , Li Hui , Li Yong Sheng , Li Qing , Liu Yan
Published: March 2014

Effects of extraction-stripping loops of organic phase on organic chemical entrainment in the aqueous raffinate in copper solvent extraction were studied in this paper. Results demonstrated that the total amount of organic chemicals lost in the aqueous raffinate decreased with the increase of times of extraction-stripping loops but reached largest at third loop. Entrainment was the dominate way of organic chemicals losing in the aqueous raffinate at early stage of the loops. The formation of entrainment and its stabilization mechanism was also studied. The average size of entrained droplet trended to increase with extraction-stripping loops increasing. Meanwhile, the absolute value of zeta potential trended to decrease. The surface tension of the aqueous raffinate increased after reaching the minimum value 41.3 mN/m at the 3rd loop. It showed that the formation of entrained droplets and its stability were mainly affected by the surface tension of aqueous raffinate.
The Analysis for Fluroxypyr Ester by Liquid Chromatography
Authors: Chen Ze Li , Zhu Hua Jing
Published: March 2014

The analysis method for fluroxypyr ester by high performance liquid chromatography (HPLC) is established in this paper. This method is based on the chemical and physical properties of fluroxypyr ester to optimize determination conditions such as the sample solvent, mobile phase and chromatographic column and detection wavelength. The different mass fraction of samples were analyzed by the following conditionds: the mobile phase is methanol-water, and the column is stainless steel filled with packing of Hypersil BDS C18 5 μm, which size is 250 x 4.6 mm (i, d), and the solvent is methanol, and the detector is ultraviolet absorption detector, and the flow velocity is 1.0 mL/min, and the wavelength is 235 nm. The experimental results show that the standard addition recovery is 99.3% ~ 100.3%, the standard deviation is 0.1%, the regression equation is y = 491.78 + 501.31 x, and the linear correlation coefficient is 0.9997.
Review of Supercritical Water Oxidation in Hydrothermal Flames
Authors: Qian Li Li , Wang Shu Zhong , Li Yan Hui
Published: March 2014

Supercritical water oxidation in hydrothermal flames is a promising method for the total destruction of refractory compounds because it can overcome corrosion and salt deposition problems. In case of wastewater with a low reaction heat, the use of auxiliary fuels, to increase the reaction heat for the auto thermal operation is necessary. Methanol and isopropyl-alcohol were usually used as fuels. This paper compares the two fuels in hydrothermal flames and reviews the experimental results of salts, acetic acid, dioxins, ammonia, sludge and phenols of naphthalene and toluene. The results show that the destruction process obtains high TOC removals, and phenols are easy to cause soot formation problems. If soot deposition problems can be solved, supercritical water oxidation in hydrothermal flames will have a bright prospect for commercial applications.
Dynamic Analysis and Applied Technology in New Anti-Jamming Hydraulic System with Fast Response
Authors: Luo Chun Lei , Yu Wei , Chen Zhou Wei
Published: March 2014

In order to avoid the jamming problem of drill-rod because of slow response of existing drilling equipment when facing gaps and karst caves during drilling process, we proposed the principle scheme of a quick-response hydraulic control system which aimed at making the jackdrill return as soon as possible once detected gaps and karst caves. The model of the hydraulic system was established and then solved by AMEsim. The parameters of critical parts such as restrictors and anti-jamming group valve were optimized by simulating to achieving the shortest theoretical response time. The system has been applied to field experiment and the result shows its ascendant ability of preventing jamming failure,the response time is shorter than traditional system in half. This research has great engineering application value to improve the drilling efficiency.
Research of City Environmental Pollution and City Planning for the Future
Authors: Zhang Peng
Published: March 2014

City environment problem increasingly troubles the people living in the city. What the human doings are against the city environment and damage their homes. This paper analyzes the causes of city environmental pollution and several aspects of pollution, and probes into the problems of city pollution and environmental planning for the future. The goal is to find an effective solution to resolve these problems. Finally, the solution of the problem from three aspects in city planning is proposed for improving the living environment and purifying homes.
Research on Pollutant Emission CEMS Remote Monitoring System Based on WEB and CAN Bus
Authors: Zhao Yan Jun , Gao Cheng Bin , Qu Bin
Published: March 2014

The remote monitoring system is widely applied. The pollutant stationary source is distributed widely, so the pollutant emission status of the stationary source is difficult to on-time monitoring by EPA. The pollutant emission status remote monitoring system based on WEB and CAN bus is brought out in the paper. The remote monitoring system includes pollutant emission data collection unit, data transmission unit and EPA management unit. Soot emission concentration measurement method of the remote monitoring system adopts the Transmission-Scattering method and gaseous pollutant emission concentration measurement method adopts NDIR. The pollutant emission concentration data is collected by data collection unit and sent to data transmission unit through CAN bus. The pollutant emission data is sent to EPA management unit through WEB. The experiment result indicates that the remote monitoring system can on-line monitoring the pollutant emission status of the stationary source and improves the communication efficiency and accuracy.
Research on Decontamination of Chemical Accident Disposal to Reduce the Harm to the Environment
Authors: Wang Yuan Yuan , Wang Bing Qiang
Published: March 2014

Toxic and harmful substances can pollute the air and object surface after chemical accidents. Toxic gas is omnipresent in the contaminated zone and poisonous liquid can penetrate into the depth of surface caused by pollution. This will last for a few hours, more than a few days, months or even longer, the ecological environment will be seriously polluted. So the efficient and fast decontamination is needed after chemical accident, decontamination work is an important part of chemical accident disposal work, which can prevent chemical accidents secondary disasters effectively.
Research on Applied Technology with Bluetooth Technology in Design of Multifunctional Teaching System
Authors: Dong Ya Jun
Published: March 2014

Bluetooth is a wireless communication standard of a kind of low cost, short distance and low power consumption which provides a way of wireless connection for the multimedia classroom equipment. Based on the Bluetooth communication applied technology, a kind of multimedia teaching assistant system with some functions such as voice transmission, multimedia devices control and wireless U disk is designed. The applied technology has the advantages of small investment, stable and reliable communication and easy to use, and can be widely used in foreign language teaching, lectures and other occasions.
Optimization Technology of PID Parameter in Control System Based on Improved Particle Swarm Optimization Algorithms
Authors: Huang Tian Shun , Li Xiao Qiang , Lian Hong Yun , Zhang Zhi Qiang
Published: March 2014

Particle swarm algorithm has been proven to be very good solving many global optimization problems. Firstly we improved particle swarm optimization algorithm, the improved PSO algorithm for continuous optimization problem, in solving the nonlinear combinatorial optimization problems and mixed integer nonlinear optimization problems is very effective. This design adopts the improved particle swarm algorithm to optimize the PID parameters of the control system, and the effectiveness of the improved algorithm is proved by experiment.
A Nonlinear Catastrophic Model of Isolated Rock Pillar Instability and its Chaotic Behaviour Based on Material Properties
Authors: Zhang Xiao Hu , Ren Xiao Long , Liu De Chao
Published: March 2014

A cusp catastrophic model of rock pillar instability was developed under uniaxial stress conditions, based on the assumptive softening constitutive relations under static mechanics. The static criterion of rock pillar instability is derived. The dynamical nonlinear differential equation under nonequilibrium state followed by the cusp catastrophic model is introduced. The characteristics of rock pillars chaotic evaluation are studied under the change of linear stiffness. The results show that the rock pillars motion is chaotic when the linear stiffness is in a certain interval, which are proved by the calculated max Lyapunov exponent.
Vibration Signal Analysis and Fault Diagnosis of Gears Based on Hilbert Marginal Spectrum
Authors: Wang Jiang Ping , Cui Jin
Published: March 2014

Hilbert-Huang transform is a new method of signal processing, which is very suitable for dealing with nonlinear and non-stationary signal. In this article, a gear fault diagnosis method based on Hilbert marginal spectrum is proposed in view of the non-stationary characteristics of gear vibration signal. First the original vibration signal is decomposed into several intrinsic mode functions (IMF) of different characteristic time scale smoothly by means of empirical mode decomposition (EMD) method. Then the Hilbert-Huang transform is carried out for IMF and the Hilbert marginal spectrum under different operating conditions are obtained. Gear faults can be judged through the analysis of the marginal spectrum. The experimental results show that this method can effectively diagnose the gear faults.
A New Precise Apparatus for Solid Density Measurement up to 10 kg
Authors: Sayed B.M. , Azzam B.S. , Abdou M.Z. , Eltawil A.A.
Published: March 2014

A proposed design and construction for a new apparatus used in measuring the solid density of masses from 1 kg up to 10 kg in the National Institute for Standards (NIS) at Egypt are presented. The apparatus operates manually and automatically for measuring the density of masses of class E using the hydrostatic weighing principle (Archimedes) according to used international standard. The principle of operation of the Hydrostatic Weighing Apparatus (HWA-NIS) depends mainly on measure the masses of the standard and the under test objects both in air and in liquid. The HWA-NIS measures the solid density with uncertainty of ±0.8 kg.m-3at coverage factor k = 2.The HWA-NIS has been used for measuring different nominal masses to validate its performance along the measuring range. The obtained results compared with the standard values. The comparison showed a good agreement between the HWA-NIS outputs and the standard values.
Investigation of Circumferential Mode Frequencies of Permanent Magnet Synchronous Motor
Authors: Yu Shen Bo , Wang Hui
Published: March 2014

This paper takes the tooth-slot zone with winding of stator and the stator yoke as two integrated circular cylindrical shells. Circumferential mode frequencies of the stator system are calculated. Compared with the result of FEM simulation and experimental mode analysis, the result of analytic formula is evaluated.
Research on Automatic Leveling System of Railway Rescue Crane
Authors: Zhang Ling , Shao Jun Peng , Sun Gui Tao , Gao Bing Wei , Jin Zhao Hui , Zhu Jian , Mu Xiao Ning
Published: March 2014

Automatic leveling system used in railway rescue crane has characteristics such as time variance, nonlinearity and strong interference, which bring a variety of difficulties in control process into existence. This paper introduces the working principle and mathematical model of automatic leveling system used in railway rescue crane. A fuzzy PID controller based on fuzzy logic control algorithm and conventional PID algorithm is designed, MATLAB simulation results show that the effectiveness of the proposed fuzzy PID controller, and the fuzzy PID control strategy has better effect on the automatic leveling system used in railway rescue crane.
Fabrication of 90° Wall of {100} Plane on (100) Si by NaOH Solution via Design of Experiments
Authors: Pakpum Chu Pong , Pussadee Nirut
Published: March 2014

The experimental trials were conducted by design of experiments (DOE) technique to find an anisotropic wet etching condition that achieves 90° wall angle on silicon (100) orientation wafer. Three considered factors assigned to the DOE were NaOH concentration, solution temperature, and stirring speed. The response aimed for this study was not only targeting at 90° wall but also providing highest etch rate. The experimental results showed that in order to fabricate the 90° wall angle, the best etching condition using was 30% wt NaOH concentration, 80°C solution temperature, and 300 rpm stirring speed. This condition gave an etch rate of 1245 nm/min with surface roughness (Ra) of 701.48 nm.
Specialised Internet Tool for Biogas Plant Modelling and Marked Analysing
Authors: Dach Jacek , Czekała Wojciech , Boniecki Piotr , Lewicki Andrzej , Piechota Tomasz
Published: March 2014

The paper presents the internet tool for decision support and data acquisition for Polish biogas market. This system helps investors to plan the size and potential power of biogas plant with usage of selected, own substrates. Because of open access via internet, the BiogasWebPlanner® allows to create one of the biggest databases about future Polish biogas market.
A Construction of Non Binary LDPC Codes by Circular Matrices
Authors: Timakul Sekson , Choomchuay Somsak
Published: March 2014

In LDPC code, the structure of code's parity check matrix plays the crucial role in code performance. In this paper proposes the preliminary investigation of a designed parity check matrix from Tanner. We modify this technique in to non binary LDPC structure and decoding with FFT-SPA. We take into high code rate application more than 0.8. The result has shown that in bit error rate (BER) compare between non-binary LDPC and binary LDPC. In our results, the performance of non binary LDPC has better than binary LDPC.
Value Prediction of Design Parameters Based on Weighting Least Squares
Authors: Li Sheng , Jia Hong Sheng
Published: March 2014

Parametric equipments or standard parts usually have many different types of original design parameters. So when designing some new specifications, it requires a lot of estimation or trial and error to determine the value trends and intervals of other unknown design parameters. Based on a finite number of historical examples of design parameter groups, the paper gives an algorithm to fit value trend line using multivariate linear weighted least squares method, whose weights are designed by using distance-proximity coefficient and correlation coefficient. The algorithm uses a small amount of new design parameters, fits value trend lines of other unknown parameters, predicts all other design parameters, finally makes up a design parameter group for a new specification. Two test results of standard parts from home and abroad show that, the accuracy of value prediction is able to meet the requirements of engineering applications.