bluuebunny/crossref_metadata_2025 huggingface dataset:
Solar Energy, the Heat Collector Device Research and Application
Authors: Li Bao Hong , Lv Bao Liang
Published: January 2012

A curved glass evacuated solar collector tube welding and metal melting point, to achieve the stability of vacuum time. Application of the solar collector tube, the heat collector device, solar radiation intensity in 17MJ/M2 cases, after 30 minutes of sunshine arc temperature of solar vacuum tube load up to 480 °C or above, add heat transfer medium after the medium output temperatures up to 220 °C. Solar vacuum tube with curved endothermic components help focus line fluctuations, solar energy in order to achieve high-temperature heating, the high temperature heat output.
The Study on Community Energy Planning and Emission Reduction in China
Authors: Zhou Zhi Hua , Tan Zi Chao , Yang Guo Qiang , Qiu She Ming
Published: January 2012

Climate change is becoming a highlight of the world. As the world's second largest CO2 emission country, China faces increasing pressure. Energy consumption and utilizing is the major source of CO2 emissions. Optimization of the regional energy configuration can not only reduce energy consumption, but also reduce carbon dioxide emissions. Thus, it will achieve energy conservation and sustainable development. Based on the Eco-city constructed by China and Sino-Singapore, this paper calculates the regional energy-saving under the requirement of existing Energy Conservation Code, plans its energy saving quantity by taking some measurements and then predicts the carbon dioxide emission reductions. The result shows that using effective measures to save energy can reduce 227772t carbon dioxide emissions. Using renewable energy and energy saving measures will reduce 371414t CO2, which has a striking effect. So changing energy structure and using renew energy are main measures to reduce CO2 emission.
Modeling the Effect of Groundwater Abstraction on Wei River Riverine Ecological Flow Using the Coupled Model of Groundwater and Surfacewater
Authors: Zhang Bo , Hong Mei , Zhou Zu Hao , Jia Yang Wen , Li Hui , Wang Dong
Published: January 2012

In this study, the latest version of river boundary modular in MODFLOW, was employed in this watershed for the case study of coupled calculation between river and aquifer. Because of the complex interaction of groundwater and surface water in this area, the coupling model of SFR modular for river diffusive wave model and isochronal cell method for overland flow confluence model and numerical calculation of groundwater is coupled to simulate the runoff process of Weihe river. The model validation was aiming at river flow rate and groundwater field. The results show that 65% of the abstracted shallow groundwater comes from the river water and the reduced amount of river baseflow by the groundwater abstraction is 122 million m3 per year, which is also validated by a water balance analysis of river links. The 50% reduction of shallow groundwater abstraction may lead to a recover of 3 m of the lowest groundwater level. The study provides a sound analysis tool to the integrated water resources and ecology management in the region.
Study on Energy Saving Potential of Radiant Cooling System in China
Authors: Yin Xing Lei , Tian Zhe , Liu Kui Xing , Li Feng
Published: January 2012

Combined system of radiant cooling and dedicated outdoor air system (DOAS) has advantage in energy-saving and thermal comfort. In order to investigate the energy saving potential of the system under different climate conditions in China, Tianjin, Shanghai, Guangzhou, Chengdu and Xi’an were selected, where summer energy consumption of the combined system and fan coil + fresh air system in reference building was calculated with BIN method respectively. The results show that radiant cooling system has better performance in energy saving than fan coil system by saving of 12-16%. The system operation time and outdoor climate are main factors influencing energy saving effect.
Research on the Problems and Countermeasures of Higher Engineering Education in China
Authors: Zhang Kai , Hao Xiao Yan
Published: January 2012

China’s economy steps into the globalization, and be recognized as the "world factory". Meanwhile, China’s higher engineering education is facing dual challenges of industry globalization and engineering education globalization. This paper analyzed the current situation and existing problems of higher engineering education in China, and then proposes reasonable countermeasures for enhancing the development of China’s higher engineering education and the international competitiveness of its industry.
Transport Chain between China and Germany: A SWOT Analysis
Authors: Tong Jian , Wang Xiao Na , Wen Hai Tao , Kummer Sebastian
Published: January 2012

Optimization of international transport chain may significantly contribute to the successful outcome of international trade. The performance of various transport mode influences its selection. This paper analyses and compares the transport chain between China and Germany, aiming to identify the best practices and chose the optimal transport mode. Based on analyzing secondary data, the different transport modes are presented. The SWOT analysis was selected to analyze and compare the competitive operation of the various transport modes between China and Germany. It was explored the determinate of the selection of transport mode; the train transport should be urged to develop between China and Germany, besides air- and marine mode; In addition, price, timing, service grade and relationship with forwarder are the vital factors to the routine option between China and Germany. More secondary data should be used to validate the research in the future.
Implementation Mode of Industrial Engineering Projects Based on Project Management
Authors: Liu Hang
Published: January 2012

Since the Industrial Engineering (IE) was introduced to China, people have already had much understanding of this cross discipline, and IE has been successfully popularized and applied in some enterprises. In such circumstances, a task we face is to systematically and comprehensively develop a theory and application system of IE from the subject development and practical application point of view, and the industrial engineering body of knowledge is established based on such a need. In this paper, on the basis of investigation and study on the domestic and foreign relevant studies, it establishes the industrial engineering body of knowledge, and proposes the implementation mode of IE projects based on project management, providing a certain reference role in the discipline development of IE and the implementation of IE in enterprises.
Research on Short Term Load Forecasting of Power System
Authors: Wang Li Zhong , Liu Tie Nan , Zhao Hui , Liu Hong Bo
Published: January 2012

The short term load forecast of power system is one of the important tasks of power dispatch and service department, whose accuracy has a close relation with dispatch operation, production plan and quality of power supply. Artificial neural network was introduced into forecasting of short term load. Aiming at the drawback in classical BP artificial networks and combining with differential evolution algorithms, this paper puts forwards the prediction model based on real number coded DE-BP artificial networks. Experimental result show this model has high prediction accuracy and can be used into real project.
Intelligent Agents for Trading of Electricity in the Microgrid
Authors: Hu Heng Kai , Wei Cheng Jian , Chen Qing Hua , Yang Guang
Published: January 2012

One of the key advantages of the smart grid is its capability to manage the electricity trading automatically between homes and electricity grids to cope with the inherent real-time dynamic in electricity demand and supply. In this context, this paper presents some advantages and capabilities offered by intelligent agents for trading of electricity in the microgrid. A market-based mechanism and agent trading strategy are developed and studied. Based on the Continuous Double Auction model, the proposed mechanism can deal with unforeseen demand or increased supply capacity in real time. A new trading strategy that can achieve higher market efficiency than previously published well known strategy is also illustrated. The importance of intelligent agents for the distributed control and autonomous operation for the smart grid is demonstrated.
Cost Analysis for E-Commerce Enterprises
Authors: Liu Yun Ping
Published: January 2012

The cost of the e-business enterprise can be divided into four fields: ad cost, logistic cost, web construction cost, service cost. From the perspective of growth of the enterprises, the development of the e-commerce enterprises can be divided into three stages. This article points out the relations between the period and the cost control aims. More researches are needed to find out the method to choose optimum weighted function for keep balance.
Study of Voltage Stability in Grid-Connected Large Wind Farms
Authors: Duan Jian Dong , Li Rui , An Lin
Published: January 2012

Squirrel-cage induction generator (SCIG), as its structural and economic advantages, has been widely utilized in large wind farms in China. However, the large wind farm composed of induction generators will cause obvious problems to the power system stability due to the dependency on reactive power. At the same time, Doubly-fed induction generator (DFIG), as a new type of wind turbine generator, has excellent dynamic characteristics for operation of wind farms. With the increase in penetration of wind power in power systems, more and more wind farms will use both SCIG and DFIG. In this case, the dynamic characteristic of wind farm on power systems is becoming an important issue especially in terms of the voltage stability. This article is to show by means of simulations the dynamic performance of wind farm linked to power system under the circumstances of network disturbances. Furthermore, the interaction between the SCIGs and DFIGs has also been investigated. A detailed model of wind farms is presented through the plat root of MATLAB/SIMULINK. The simulation results demonstrate that the DFIG applications will largely improve the dynamic performance of wind farm in certain conditions, if the DFIGs could be applied reasonably, the voltage stability of the wind farm will be largely improved and even low voltage ride through(LVRT) characteristic of SCIGs, which may be a good solution to reduce the high dependence of costly reactive power compensation equipment(Some flexible AC transmission systems devices like SVC, STATCOM) to some extent.
The Influence of Coexisting Ions on Adsorption-Flotation of Pb2+ in Water by Gordona Amarae
Authors: Dai Shu Juan , Yang Shu Yong , Zhou Dong Qin
Published: January 2012

Processing waste water of heavy metals by biosorption-flotation was effected by many factors. Existing coexisting ions in waste water is a important factor. The influence of coexisting alkaline-earth metals ions and heavy metals ions of Cd 2+, Cu 2+, Hg 2+, Zn 2+, As 3+, on results of adsorbing and floating Pb2+ in waste water was examined by using Gordona amarae as adsorbent and laurylamine as collector. The results showed that different sort of heavy metals ions and alkaline-earth metals ions have different influences on biosorption-flotation. The influences on biosorption-flotation by coexisting ions showed that ions exchange mechanism, surface complexation mechanism, oxidation-deoxidize and inorganic micro precipitation mechanism exist probably
Specific Problems of Management in Russo-Chinese Joint Ventures (Specialized in Energy & Power Products)
Authors: Pedyash Denis , Wang Qing Sheng , Shi Chun Sheng , Xi An
Published: January 2012

Thanks to a number of positive factors benefiting a favorable investment climate in the People’s Republic of China, the Russian investors keep on exporting capitals and hi-technologies to this country and creating a number of companies and businesses, including enterprises, specialized in manufacturing power and energy products. In this paper we analyzed the relevant literature and compared managerial models at Chinese enterprises with those in China managed by the Russian based on well-established theories related to adopting foreign management at the enterprises in China. In the empirical study we concentrated on certain problems emerging at the enterprises where the Russian managers have been present and involved actively in the decision-making. The purpose of this paper is to suggest a preliminary analysis through the eyes of both Russian and Chinese specialists.
Research on the Key Technology of Energy Management and Optimization in Cement Enterprises
Authors: Jing Shao Hong , Xu Wen Meng , Wang Xiao Hong
Published: January 2012

On the detailed analysis of the energy consumption and the characteristic of production in cement enterprises, it brings forward the whole plan in MES based on energy management and optimizing control, and the key technologies in system implementation are analyzed and studied.
Mechanism Analysis on Performance Enhancement of Ammonia Bubble Absorption by Nanofluid
Authors: Sheng Wei , Wu Wei Dong , Zhang Hua , Pang Chang Wei , Wu Run Yu
Published: January 2012

The objective of this paper is to analyze the enhancement mechanism of ammonia bubble absorption performance by nanofluid. In this paper, the process of ammonia bubble absorption is divided into three different steps: the bubble growing, the gas absorption in liquid phase and the interface phase transfer. According to the analysis, nanofluid can enhance the diffusion coefficient or the absorption performance in each step, and enhance the whole absorption performance resultly; the gas mass transfer during the bubble growing is enhanced by nanofluid for the surface tension decrease; the main cause for the enhancement of the gas absorption in liquid phase is considered as the transport effect of nanoparticles carrying ammonia gas molecule and the vortex transfer effect arising from Brownian motion of nanoparticles; the main cause for the enhancement of the transfer at phase interface is considered as the Marangoni convection and the vortex transfer effect due to nanoparticles.
The Study on Configuration and Setting of Relay Protection when Distributed Generation Accesses to Distribution Network
Authors: Li Xiao Ming , Li Sha , Lu Peng , Liu Shu Qiong
Published: January 2012

When distributed generation (DG) accesses to non-system bus , and the power capacity increases to a certain extent, it will cause malfunction of protective devices, as a result of which ,protective devices lose selectivity. This paper analyzes influence to relay protection of power system as a result of the access of DG, establishes a model of the access of DG, and proposes principles of reconfiguration of protection devices, and re-setting of relay protection when DG accesses to power system. This method provides a theoretical basis for designing of DG accessing to power system, reconfiguration of protection devices and re-setting of relay protection.
Analysis of Synthetic Aperture Radar Imaging and Signal Processing
Authors: Su Su Yi Mon , Fang Jian Cheng
Published: January 2012

Digital signal processing is used to focus the image and obtain a higher resolution than achieved by conventional radar systems. This paper presents details of Synthetic Aperture Radar (SAR) signal processing and imaging technique with the goal of generating images. A Matlab based program is developed and coded for imaging simulation. It facilitates processing data and producing desired output. Then, we investigate the characteristics of Linear Frequency Modulated (LFM) signal prior to getting image results. The SAR properties in range and azimuth directions are described. The received signal and SAR raw data is theoretically described. In addition, the target reflection signal processing is also well presented. The SAR image formation is described using Range Doppler Algorithm (RDA). Finally, simulation parameters are computed and imaging simulation test is finished.
Research in Testing of Loess Foundation Pile Hysteretic Property under Horizontal Cyclic Load
Authors: Ding Ming Bo , Chen Xing Chong
Published: January 2012

In this paper, by the large scale model test of pile-soil in remodeling loess foundation, authors research the basic discipline of pile-soil interaction plastic hysteretic property of pile foundation in loess area under horizontal cyclic load and obtain hysteretic curves, skeleton curves and relationship between equivalent viscous damping coefficient and displacement under pile-soil interaction. The paper also discusses the intensity components, plastic and other energy and equivalent viscous damping coefficient cycles occur with varying degrees of degradation of the variation.
Environmental Problems and Strategies Caused by Coal Mining
Authors: Li Jian Sheng , Wang Dong , Kang Tian He
Published: January 2012

The environmental problems about destruction and pollution of water resource, destruction and occupation of land resource, and air pollution in coal mining was described. Green mining technology in terms of the solution in environmental problems caused by coal mining was introduced. The main content of green mining includes reduction of rock waste, simultaneous extraction of coal and coal-bed methane, water-preservation in mining areas, coal mining to retard surface subsidence, and underground coal gasification. Green mining harmonizing with resources and environment is the fundamental method to solve environmental problems caused by coal mining. In order to develop green mining technology, the economic evaluation of green mining and the establishment of relevant laws need to be further strengthened.
Evaluation for Enterprise Marketing Performance Based on Analytic Hierarchy Process
Authors: Zhang Xiao
Published: January 2012

Evaluation of enterprise marketing performance has a great importance for enterprise to formulate marketing strategy and carry out marketing activity.Evaluation for enterprise marketing performance based on analytic hierarchy process is proposed in the paper.Analytic hierarchy process is used to perform multi-criteria decision analysis in order to determine the relative importance in the decision matrix.The pairwise comparison matrix by using the pairwise comparison of the indexes in same layer is established.Local weight and global weight are computated by using the pairwise comparison matrix. Marketing condition of a certain enterprise is applied to evaluate for enterprise marketing performance. It can be seen that enterprise marketing performance based on analytic hierarchy process is effective.
Intelligent Modeling and Predictive Control of Pre-Grinding System
Authors: Liu Zhi Peng , Yang Qiang , Yan Wen Jun
Published: January 2012

Stably controlling the pre-grinding process is paramount important for improving the operational efficiency and significantly reducing production costs in cement plants. Recognizing the complexity in both structure and operation of the pre-grinding process, this paper proposed a fuzzy and model predictive control system to stabilize and optimize the pre-grinding process. Based on the available techniques and system analysis, it is divided into two different sub-systems. One is handled by Fuzzy Logic Control (FLC), and the other is implemented by Linear Matrix Inequality (LMI)-based Model Predictive Control (MPC) based on the model achieved by Least Square Support Vector Machine (LS-SVM) regression. With this approach, the control parameters can be obtained online by the use of aforementioned algorithms and applied to the pre-grinding system by using OLE for Process Control (OPC) and relevant software. The trail system has been deployed in the field and its operation clearly demonstrates the effectiveness and feasibility of this control system in practice.
The Robust Optimization Design for Cylindrical Helical Compression Spring
Authors: Zhao Hong , Chen Gang , Zhou Jun Zhe
Published: January 2012

In here, a robust optimization mathematical model of the cylindrical helical compression spring is presented. To minimize the error and maximal variations of spring stiffness coefficient related with structure parameters and its tolerances is chosen as its objective function, and the acceptable region is formed by some constraints. The theory is applied to the structure design of the breaking spring of spring actuator, the breaking characteristics are all satisfied at the optimum structure parameters, and the optimization results are discussed.
Research on the Evaluation Model of Bidding Risk in Engineering Project
Authors: Liu Bao Kun , Wang Peng
Published: January 2012

The decision of bidding risk in International Engineering project faces many risk factors. It is of significance to identify precisely the assessment of the risk correctly. A concise and practical method of assessing the tender decision risk is presented in this paper based on the principle of AHP method and fuzzy comprehensive evaluation method. We take Inner Mongolia Power Company Limited H 2 × 600MW project for example to verify the practicality and effectiveness of the system. Finally, considering of thermal power construction project's bidding risk characteristics, then we offer some risk control measures, which provides a more objective and applicable method for the risk management in international projects.
A Kind of Music Retrieval Model Based on Nested Sparse Matrix in P2P Network
Authors: Meng Xian Fu , Li Chun
Published: January 2012

In view of existing situation that large collections of music data are shared by numerous users in Peer-to-Peer network, people raise higher demands for content-based music information retrieval. For more efficient searching, this paper mainly involves the following three points: Firstly, filter out the repeating patterns in original piece of music and extract the key information, which can reduce the space occupied by index structure. Secondly, we propose a music index structure based on ordered orthogonal list to store music features in a nested sparse matrix. Finally, a related search table is proposed according to user’s search history to store the global connectivity of the network. Experimental results show that the proposed model can reduce the traffic cost and average response time effectively and have high retrieval accuracy.
Research on Short-Circuit Current of Marine AC Power System Based on Combined Programming
Authors: Zhang Chun Lai , Wang Hao Liang , Zhao Dian Li
Published: January 2012

Based on the combined programming for VB, Excel and MATLAB, the paper makes research on short-circuit current of marine AC power system. This method can not only draw precise calculations, but also has the function of making short-circuit current time curve. And it opens up a new way to study the short-circuit current.
Similitude Analysis for Orbital Simulation with Central Gravity Deviation
Authors: He Zhao Wei , Shi Peng , Zhao Yu Shan
Published: January 2012

The similitude problem for the simulation of orbits under the central gravity deviation is investigated. The dynamic models are developed with consideration of the magnitude deviation and the orientation deviation of the central gravity, respectively. Similitude theory and dimensional analysis are employed to derive the scaling laws. Since it’s often impossible to maintain complete similarity resulting from practical constraints, a metric which combines dimensional and activity analyses is given. The metric could quantify the proximity of an actual model to exact similitude. Through creating the bond graph model of the two-body problem, the activities of the states are measured. Validity of the proposed technique is proven via numerical simulations, and the results are presented and compared.
Modeling of Wrist and Hand Motion while Performing Functional Task
Authors: Ping Ung Eng , Parasuraman S.
Published: January 2012

A large prescriptive data set of wrist, metacarpal arch fingers and thumb movements has been collected using twenty-four 4mm hemispherical passive reflective markers placed on the wrist, hand and fingers. Movements of each participant were captured by a set of 6-camera infrared motion analysis system (QUALISYS) sampling at 60Hz while undertaking a clinical hand function assessment, the Southampton Hand Assessment Procedure (SHAP). Without Muscle Contraction and With Muscle Contraction versions of objects are assessed and were tested, characteristics of individual movement strategies presented and initial results have shown interesting variations that correspond with physiological and functional approaches to movement. With the whole designed system, patient can improved hand function with the result of vigorous physical activity through the SHAP procedures, from the supervision of researcher can determine the functionality of one patient’s hand and wrist which will benefit subjects with a dramatic effect on one’s daily life as we know exercise is related to better health. Using advanced software such as Visual 3D and Qualisys Tracking Manager, researcher can monitor patient’s recovery progress, with suitable angle of calculation of one’s fingers, acceptable force and velocity of one’s produced depending on age and size of hand of subjects.
Crush Simulation of Car Using LSDYNA
Authors: Kumar Eriki Ananda , Ravichandra R. , Kanisin Devaraj
Published: January 2012

The paper is concerned with FEA procedures are now used abundantly in automotive industry. Linear static and dynamic analyses are conducted in a routine manner, and nonlinear analysis is increasingly pursued. Two analysis fields in which highly nonlinear conditions are simulated are the crash and crush analysis of complete motorcar models. The purpose of a crash analysis is to see how the car will behave in a frontal or sideway collision. In a crash analysis the crashing of a car at about 30mph and above is considered. Various crash codes have been developed based on explicit time integration, special shell elements for this specific analysis results have been compared with laboratory test data, and the simulations have proved very valuable. In crush analysis, a quite different physical phenomenon is considered. Here the purpose is to establish the ultimate strength of the car body in a static situation. The ultimate strength affects the behavior of the car under various operating conditions, such as when the car overturns in an accident. While crash analysis of cars have been carried out with mush success, a crush analysis is much more difficult to achieve. The reasons for this greater difficulty lie in the fact that a slow-speed, almost static analysis requires increased robustness and efficiency in the solution algorithms. Specifically, for the crush analysis, the shell element mush be of high predictive capability, and be robust and computationally efficient for static analyses.
Wind Turbine Control with Fuzzy Supervisory in the Partial Load Region
Authors: Dizaji Mostafa Rahimi , Koma Aghil Yusefi , Ghassembaglou Nasser , Shakoorzadeh Sina
Published: January 2012

Improvement of the performance of wind turbines as a source of clean energy production depends on the ideal control. In this paper a controller design based on fuzzy logic and for partial load region of wind turbine has been discussed. Here, fuzzy logic is used as a gain scheduler for classical controller. In the structure of the Controller, feedback signal of angular velocity of generator rotor is used to adjust the torque on the generator, while the pitch angle was kept constant on the optimal value. Fuzzy rule-base of supervisory system was derived based on responses of the turbine system to the controller with various gains which lead to track the ideal power curve. Simulation results confirmed the improvement of system response in comparison to the controlling without fuzzy supervisory.
Construction and Application of 3D and 2D Type Maps for Linkages
Authors: Chung Wen Yeuan
Published: January 2012

The 3D and 2D type maps for planar four-bar and simply RSSR linkages are constructed with illustration of their application. The criteria determining the rotatability of input or output link are developed or reviewed for both linkages. Three-dimensional type maps are then constructed by integrating the tool for numerical analysis and solid modeling software, e.g. MATLAB and PRO/E. The coordinate axes are mainly three ratios of link lengths. The types are classified based on whether the input or output link can make fully rotation. Each type map is composed of five regions representing different types. They are drag link, crank-rocker, rocker-crank, double-rocker, and unassembled. Any cross sections can be taken readily and arbitrarily from the 3D models along any plane or surfaces to get 2D type maps. The constructed type maps are also combined with curves or surfaces representing performances of transmission ratio. With type maps and related surfaces, the design process can be simplified and expedited substantially.
Investment Analysis of Electricity Industry Based on Cointegration Model
Authors: He Xiao Ying , Zhou Hui
Published: January 2012

By undertaking the cointegration theory with annual data over the period 1978-2008 in China, empirical studies on the relationship among power investment, electricity consumption and economic growth is carried out, and long-term equilibrium model and short-term vector error correction model are established; Granger causality test indicates that power investment is not the Granger causality of electricity consumption, while there exists bidirectional Granger causalities between electricity consumption and economic growth.
A Multi-Purpose Fuzzy Controller for Household Appliance
Authors: Zhao Geng Ming , Xiang Shi Wu , Liang Li Qian
Published: January 2012

A Fuzzy controller is suitable for controlling certain objects which are hard to be modelled mathematically. A controller based on fussy technology is set up for household electric appliance. The advantages are quick to response and efficient in energy conservation.
Novel Modeling Method for Networked Control Systems with Packet Disordering
Authors: Han Shi Qian , Li Jin Na , Wu Mao Quan
Published: January 2012

This paper focuses on the modeling problem for networked control systems subject to packet disordering. Both network-induced delay and packet loss are taken into consideration. In constructing the model, we first present the novel model for single input and single output (SISO) networked control systems based on the displacement values of packets in terms of switched systems theory, and then which can be extended to the case in multiple input and multiple output (MIMO) networked control systems with packet disordering. The merits or advantages of the modeling method proposed include describing fully the phenomenon of packet disordering, guaranteeing the newest signals to be executed and extensive applicability.
A Watermarking Algorithm for Remote Sensing Image Based on DFT and Watermarking Segmentation
Authors: Li Li Li , Sun Jin Guang
Published: January 2012

In this paper it proposes a meaningful digital watermarking algorithm for remote sensing image based on DFT and watermarking segmentation. At First, it normalizes the host remote sensing image and determines an invariant centroid, then selects a square area around the invariant centroid for watermark embedding. Next, it generates a pseudo-random sequence as digital watermarking, and divides it into two parts. Finally it applies DFT to the selected region and embeds watermark into DFT phase and amplitude components of the selected square area of the host remote sensing image. Experiments have shown the algorithm’s characteristics of good robustness, simple calculation, easy realization, and extracting watermark without the original remote sensing image, and it has value of copyright protection for remote sensing images.
A Research for Data Mining Technology Based on Fuzzy Neural Network
Authors: Liu Li Na , Qi Hui Juan , Li De Xiong
Published: January 2012

This paper introduces the concept of data mining generally and summarizes several methods of data mining, and presents a data mining algorithm based on fuzzy neural network (FNN). Using fuzzy theory and neural network to structure and train fuzzy neural network, the algorithm overcomes the shortcomings of neural network such as complex structure, long training time and lack of understandable representation of results.
Study on Simulation of Path Plan of Parallel Grinding for Wedge Aspheric
Authors: Jiang Chen , Guo Yin Biao , Zhang Ning Ning , Han Chun Guang
Published: January 2012

In order to ensure the machining precision of wedge nonaxisymmetric aspheric lens, a parallel grinding method is designed using a clamp with adjustable gradient. Based on the machining method, three path plans of machining are put forward. Simulation results show that the three methods have their particular advantages according to the different requirement of machining.
Voltage Quality Study of Integrated Power System for All-Electric Vessels Using Dynamic Simulation Techniques
Authors: Su Chun Lien , Weng Ruei Hung
Published: January 2012

New trends of environmental and economical issues have motivated ship end users to pay more attention in producing affordable power solutions for future vessels. This movement has been recognized by the commercial shipbuilding industry and the U.S. Navy and the aspects of integrated Power System (IPS) are introduced into the planning and design of all-electric vessels to improve system utilization and operation. The IPS consists of an architecture and a set of generators which together supply power to ship service loads as well as electric propulsion systems. However, for reliable and efficient operations, an effective system performance study framework is important and essential. To ensure the operating performance of IPS in all-electric vessels under different navigating situations, a dynamic simulation technique based method is employed in this paper for analyzing voltage variations. The dynamic characteristics of IPS are modeled and simulated by the proposed method. To demonstrate the effectiveness of proposed method, a practical vessel IPS with 6110 kVA of generation capacity and two 2200 kW propulsion motors is selected for computer simulation. Test results have shown that with thorough simulations, the system performance with respect to transient and dynamic voltage qualities can be completely represented by the proposed method, which can assist engineers in determining proper system design or mitigation options.
DTC of Three-Phase PM BLAC Motor Having One Phase Open-Circuit Fault with Current Model Flux Estimator
Authors: Utaikaifa Kasem
Published: January 2012

Direct torque control (DTC) of three-phase permanent magnet brushless AC (PM BLAC) motor having one phase open-circuit fault (OPOF) is presented. Torque and flux linkages of the faulty motor are estimated by proposed estimators. Control topology, voltage vectors and design procedure are described. Simulated results show that the proposed topology can be operated under fault situation at rated torque and speed operation. Performances of the system are validated by the measured data.
Analysis and Recommendations of Administrative Management Measures to Control Environmental Pollutions
Authors: Fang Xiao Ling
Published: January 2012

Pollution problem has become a major social problem, and its existence affects the quality of our life and limits a higher level of economic development. How to better control pollutions has become a more serious practical problem before us. In this paper, firstly, it analyzes the advantages and disadvantages of main pollution control measures in the aspects of sewage charges, tradable discharge permit system, subsidies and mandatory technique and so on, and then describes the basic policy of environmental protection, pointing out that the performance of the environmental management policies and systems shows more and more in adaptation and gap, in which not only the environmental economic policies and systems are not perfect, with a low environmental efficiency, but also the entire environmental management system does not meet the needs of the current situation. Finally, it aims at the current status of pollution control in China, through a multi-perspective analysis of improvement measures in the hope of helping the pollution control in China.
Research on Computer Network-Based After-Sales Process Planning System of Product
Authors: Sun Yong Cai , Wang Xiu Lun , Ma Zi Qin , Sun Yong Cai
Published: January 2012

Product after-sales use and maintenance phase is the longest and most important part in the product life cycle stage. It is researched after-sales process management of product use and maintenance phase with learning from the theory and experience of contemporary technology and process management of the product manufacturing phase. It is put forward that is a proposal of after-sales process planning of the product use and maintenance. And a JSP-based computer-aided system is researched and designed which is about railway transportation equipments after-sales process.
Design of Automated Distillation Analyzer Based on STM32
Authors: Chen Wen Gang , Song Xiao Jie , Liu Wei
Published: January 2012

Aiming to solve the problems of inaccuracy in temperature control and the slow reaction in condensing system in the automated distillation analyzer, an approach which combining electrical fan and thermoelectric cooler was put forward, using STM32 as the control unit; accurate temperature control during the distillation process was realized, data collection and processing can be completed by the control unit, and the wireless module can accomplish communication and control the analyzer under the instructions of computer. With this temperature control method, the automation and test accuracy of distillation analyzer can be enhanced, thus ensuring better ratio of performance-to-price and control performance.
Simulation Study of Damage Identification Method Based on Lamb Wave Scattering in Aluminium Plate
Authors: Tian Zhen Hua , Li Hong Yuan , Xu Hong
Published: January 2012

The propagation of scattering Lamb wave in plate was simulated using transient dynamic analysis in ANSYS. In order to extract the characteristic information of received signal for damage identification, the short time Fourier transform based on time-frequency analysis was utilized, and then the energy distribution and envelop of received signal were obtained. Based on the displacement contour of simulation and energy distribution, the propagation of scattering wave in plate with a through hole was examined. Also, a mathematic relationship between damage location and scattering signal was developed, with the help of wave propagation path through actuator, damage and sensor. A nonlinear optimization method was applied on the mathematic relationship to obtain the damage location. The damage identification method using scattering Lamb wave was therefore established.
Water Quality Prediction Based on Grey-Support Vector Regression
Authors: Du Jing , Tao Tao
Published: January 2012

Water quality prediction has a great significance to evalute the quality development trend of water and make the planning of water processing. In the study, a novel hybrid method of grey model and support vector regression is proposed to improve the prediction accuracy of sypport vector regression. COD is the important composition in the polluting water. Thus, COD is used as evaluation index of polluting water in the paper. The quality prediction values of input and output water of BP nerual network and the hybrid method of grey model and support vector regression are computated respectively. It is indicated that the water quality prediction by using the hybrid method of grey model and support vector regression is superior to BP nerual network.
Solvability to Robust Output Regulation of Singular Linear Systems
Authors: Teng Yu , Huang Yu Zhi , Chen Zhi Rong
Published: January 2012

In this paper, robust output regulation problems of singular linear systems are studied. Under appropriate assumptions, it is given that the solvability of robust output regulation problems equals to a specifically row full rank matrix. Moreover, the methods for constructing the feedback regulator are discussed.
Dynamic Simulation and Test of IEC 61850-9-2 Process Bus Applications
Authors: Mo J. , Liu B. , Tan J.C
Published: January 2012

IEC 61850-9-2 proposes the process bus communication for protection and automation within substations. The actual performance of process bus such as real-time, security and reliability are of concern, when transmission of sample values and trip signals over the same network. This paper presents the establishment of a dynamic simulation test platform, in order to facilitate the test of protection schemes over the process bus. An example is given to demonstrate that incorrect switch configuration, message priority tagging, and the volumes of traffic on the network may have an impact on the real time and reliability of the signals to be delivered.
Fuzzy Mathematical Safety Evaluation of Coal Mine Gas Accident
Authors: Liu Xiao Li , Zhang Zhi Ye
Published: January 2012

Now the coal mine gas risk index and evaluation system has a lot of deficiency. The paper establishes a coal mine gas risk index system and explains the meaning of each index on the basis of analysis of gas accident for recent years. Fuzzy comprehensive evaluation has become an effective and popular method, so the paper evaluates the coal mine gas accident risk using fuzzy mathematical safety evaluation, and takes this method in six mines of one group, at last the paper provides some suggestions for this method
Modeling and Simulation of Manipulator Grasping Based on Underactuated Mechanism
Authors: Ying Qiu , Rao Bing
Published: January 2012

The theory and drive mode of the underactuated robot grasper have been researched in this paper, and the mechanism has been designed and optimized. The research has been done on statics, dynamics and kinematics. 3D models for all parts are built and entity model of the underactuated grasper is created. The simulation has been completed on dynamics and kinematics of the grasper grasp different object (as staff, ball, rod).
An Attendence System Design Based on Wirless RFID
Authors: Zhang Xi Ping , Liu De Quan , Hao Long
Published: January 2012

The attendence system uses RFID to realize practicable function for ground operation of coal industry. Each worker is given by a 2.4GHz passive RFID card in order to be recognised by the system. And technologies such as database, internet and microwave communication are combined with B/C structure, which enables the comsumer to manage and operate the system convenietly wherever has the access to the Internet. Also a UDP protocol applied here to make the communication effectivly and works fast. According to the applications among several coal industry enterprises, it indicates the system has the advantages such as user-friendly, fast communication, accurate data transfer, and strong anti-jamming ability etc.
A Review of 3D Aircraft Image Recognition Methods
Authors: Zhu Xu Feng , Ma Cai Wen
Published: January 2012

This paper provides a review of 3D aircraft object recognition methods based on 2D images. First, essentialities and advantages on 3D aircraft image recognition are analyzed. Second, in view of the aircraft image recognition system model, the traits of aircraft images are elaborated, then the methods of aircraft image recognition at every stage are discussed, especial the methods of feature extraction about aircraft image and the feasibilities, which some new methods about 3D object recognition are used to aircraft image recognition, are focused. At last, some issues about aircraft image recognition which should be further studied in the future are proposed.
Calculation and Forecast on Coefficient of Static Frequency Characteristics Based on Curve Fitting
Authors: Dong Fei Fei , Liu Di Chen , Wu Jun , Zhang Lin , Wang Xiao Ming , Wang Ru Song
Published: January 2012

It is commonly used to represent static frequency characteristics of a power system that coefficient K reflects the frequency excursion caused by load changes. As the parameter for dispatching branch to arrange measure or design equipment when frequency excursion occurs, K is of great importance to dispatching branch. However, the traditional methods can only get the range of coefficient K, but not the K corresponded to the specific disturbance. In this paper, curve fitting is used to obtain the trend of K-value by a finite number of measured points of coefficient of static frequency characteristics. And then, the predicted value is compared to the simulated result to judge whether it meets the permitted error. This is a breakthrough in the study of K-value.
Research on Consistency Checking of OntoUML Model
Authors: Yang Bin , Qi Yu Dong , Wang Xiu We , Wang Ya Ning
Published: January 2012

OntoUML is a conceptual modeling language which is built with a lightweight expansion of UML metamodel, but it doesn’t provide mechanism of consistency checking on conceptual model. The correctness of the syntax and semantics of the model still need artificial check. The paper introduced OntoUML briefly and put forward a scheme of consistency checking of OntoUML model based on description logics. By transforming into knowledge base of description logics, the detection of consistencies at the OntoUML model can be realized using existing mature reasoning system.
Modeling and Transient Response of Cable Network
Authors: Zhou Xing , Xiang Zhen Yu , Cheng Er Wei , Fan Li Si
Published: January 2012

This paper introduces modeling method for calculating nodes responses of transmission-line network directly in the time domain. Arising from classical telegrapher equations, the time-domain model of transmission line is gained. The transmission-line model, together with transmission-line nodes model, form the network model. Using the time-domain modeling method, transient responses for two given networks are gained. The injection experiments to cable networks are done to validate the calculating results. The consistency of calculating results with measure results indicates the model is feasible.
Study on the Method of Feature Selection Based on Hybrid Model for Text Classification
Authors: Li Run Zhi , Zhang Yang Sen
Published: January 2012

In this paper, we study on the problem of how to combine feature selection models in text classification ,and present a method through build the hybrid model for feature selection ,this hybrid model combined with advantage of four feature selection models (DF,MI, IG, CHI), then we use the Naive Bayes model as classifier to verify the effect of the hybrid feature selelction model ,and experiments shows that the hybrid model is correct and effective and get good performance in text classification.
Entire Chromatic Number and Entire Coloring Algorithms of Regular Planar Meshes
Authors: Wang Ke Lun , Wang Lei , Wen Yu Peng , Wang De Qiang
Published: January 2012

In this paper, we propose three entire coloring schemes for regular planar meshes — square meshes, hexagonal meshes and honeycomb meshes, respectively. Based on these schemes, we propose three efficient entire coloring algorithms for these three planar meshes and prove that the entire chromatic number of square meshes is 7 (maximum degree plus 3), the entire chromatic number of hexagonal meshes is 9 (maximum degree plus 2), and the entire chromatic number of honeycomb meshes is 7 (maximum degree plus 4).