bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Risk Programming Model Based on Nutch
Authors: Peng Jian Xin
Published: October 2014

The setting-up of risk programming model under ASP platform makes the dynamic alliance prevent, control various kinds of risks with the minimum cost. On the basis of discerning various kinds of risks to the dynamic alliance, the risk evaluation model with the immune Genetic algorithm was set up. This paper studies the vertical search engine in manufacturing resource based on Nutch, for the first time introduces the Nutch to the search engine.The urls of Fetchlist come from the associator enterprise in Chinese Machine Commerce Net.
Research on VB+Access Knitting Clothing Enterprise Management System Based on
Authors: Zhang Chao Yan
Published: October 2014

With the development of market economy, the knitting enterprises increasingly important role in national economy, but the enterprise basic management is weak, backward management style, brought adverse effect to the enterprise development. Management information system has been introduced in this paper, based on the analysis of VB and Access, this paper introduces a kind of knitting enterprise management system based on VB and Access, and through the system test, the system function was tested.
Six Sigma Applications: Enhancement Sigma Level towards Quality Improvement at Automative Company
Authors: Mohamad Ikbar A.W. , Allina A. , Rahmat R.B. , Yacob S. , Muhammad Nazif H. , Noor Sulawati M.R. , Mohd Haziq Z. , Nurulhuda A. , Mohd Amran M.D. , Ishamuddin M. , Fairul Anwar A.B. , Mohd Zul Waqar Mohd Tohid , Latipah N. , Noor Anim Zanariah Y.
Published: October 2014

Achieving high rate of performance is one of the aims in any organizations, especially under the pressure of competition. This paper presents the implementation of DMAIC Six Sigma Methodology in automotive industry. This project is focused on a critical product which is T605039-003. The objective of the project is to increase the sigma level of the process to 3.5σ. The project started with define phase which is problem identification. Pareto analysis was conducted to find out the critical defect for part T605039-003. As a result, defect of burr at thread was selected for further study. The existing process sigma level is 3.02σ. Measurement System Analysis (MSA) was carried out to validate the measurement system used. Next, the study continues with measure phase. GR&R study is conducted to verify the capability of the measurement equipment and from the result, most of the variation is due to the differences between parts and very little is due to measurement system error. This brings the project to the fourth phase which is the improve phase. A new process is developed to eliminate burr at thread from occurring. The percentage of reject is reduced to 1.59% whereas the sigma level is increased to 3.54σ.
Using BPNN to Predict Number of Low-Income Households in Taiwan Based on Seasonally Adjusted Annualized Rates for Real GDP
Authors: Tung Yi Ti , Pai Tzu Yi
Published: October 2014

In this study, the back-propagation neural network (BPNN) was used to predict the number of low-income households (NLIH) in Taiwan, taking the seasonally adjusted annualized rates (SAAR) for real gross domestic product (GDP) as input variables. The results indicated that the lowest mean absolute percentage error (MAPE), mean squared error (MSE), root mean squared error (RMSE), and highest correlation coefficient (R) for training and testing were 4.759 % versus 19.343 %, 24429972.268 versus 781839890.859, 4942.669 versus 27961.400, and 0.945 versus 0.838, respectively.
EU Approaches to Unification of Methodologies for Determination of Building Object Life Cycle Costing
Authors: Kuda František , Berankova Eva Wernerova
Published: October 2014

The paper is focused on questions of building life cycle costing determination (LCC). Current situation concerning the LCC determination in the world is analysed and it is stated here what documents deal with these questions and at the same time also the ISO 15 686 standpoint is stated here. To point out to the importance of the cost determination in this field which is born already with investment project preparation is the aim of this paper.
Using ANN to Forecast Transportation Sector’s Energy Consumption in Taiwan Based on Oil and Gas Price
Authors: Tung Yi Ti , Pai Tzu Yi , Shih Li Hua , Fan Shu Wen , Lin Wei Cyuan , Lu Tien Hsuan
Published: October 2014

In this study, four types of artificial neural network (ANN) were adopted to forecast transportation sector’s energy consumption (TSEC) taking different number of input variables. By taking premium gasoline price (PGP), premium diesel oil price (PDOP), fuel oil price (FOP), raw material natural gas price (RMNGP), and fuel natural gas price (FNGP) as input variables, ANN could successfully forecast TSEC, the best mean absolute percentage error, mean square error, root mean square error, and correlation coefficient for training and testing were 15.03 % versus 24.43 %, 2792036.59 versus 11982081.08, 1670.94 versus 3461.51, and 0.71 versus 0.51, respectively.
Design and Performance Evaluation of Hot Air-Microwave Continuous Belt Dryer for Drying Block Rubber STR 20
Authors: Suriyavongpongsa Bundit , Watyotha Cumnueng
Published: October 2014

This aim of this research study was to examine the design and construction, as well as to test the performance of hot air-microwave continuous belt dryer machines for drying block rubber STR 20. This industrial type of machine is divided into three major systems: 1) the hot air system, 2) the microwave heating system, and 3) the drying room and conveyor systems. The experiments in this study have shown that the machine can produce heat in the temperature range covered to dry block rubber and the temperature is precise enough within a range of 100 to 130°C (±0.5°C). Security experiments on the microwave leakage have shown that it does not exceed the standards of the HHS (no more than 5 mill watts per square centimeter). Performance experiments have indicated the heat distribution was 83.46 percent which is over 65% of what is considered normal, and the power of the microwave was measured by testing was the value of 24.42 percent of the magnetron wattage used.
Diagnosis for Water and Steam Quality Problem in Taishan Ultra-Supercritical Power Plant
Authors: Li Mao Dong , Dai Chen Lin , Zhao Jun Ming , Du Yu Hui , Yang Lin , Yu Fen , Zhu Zhi Ping
Published: October 2014

Water and steam quality during operation must be strictly controlled for ultra-supercritical unit. Changes of indicators in water and steam are supervised, water and steam quality and working condition of boiler water, as well as supervision of water and steam quality are reviewed in this paper. Risks of corrosion and scaling in Taishan power plant is assessed. As a result, control effect of TOC is remarkable in Taishan power plant, content of Cl- and SO42- can satisfy the control standard, that is , risk of corrosion and scaling is low. Dissolved oxygen is significantly exceeded in the condensate polishing desalination device , and there has risk of iron deposit. To convert the feed water treatment from AVT(All Volatile Treatment) to OT(Oxygenated Treatment) can solve the problems above .
Effect of Solid Particle on Rough Thermo-Elastohydrodynamic Lubrication with Non-Newtonian Lubricant
Authors: Wongseedakaew Khanittha , Panichakorn Jesda
Published: October 2014

This paper presents the performance characteristics of rough thermo-elastohydrodynamic lubrication (TEHL) with non-Newtonian liquid–solid lubricant based on a Power law viscosity model. The time independent modified Reynolds equation, elasticity equation and energy equation were solved numerically using finite different method, Newton-Raphson method and multigrid multilevel methods were used to obtain the film pressure profiles and film thickness in the contact region. The effects of amplitude of surface roughness and concentration of solid particles are examined. The simulation results showed surface roughness has rapidly effect on film pressure and film temperature. The effect of solid particle can be increases film thickness and decreases friction coefficient.
Environmental Worthiness Technology of Personal Protective Equipment
Authors: Li Ying , Liu Xiang Xuan , Huang Jie , Ding Song Tao
Published: October 2014

Environmental worthiness is one of significant quality characteristics of personal protective equipment. By researched the design demand of equipment environment worthiness on domestic and overseas, and viewed in the man-machine-environment system and environment engineering of weapons, we established some environment worthiness technology programs included design, test, and evaluation. The technology program will give the technology support of personal protective equipment quality management.
Fundamental Study of Energy Harvesting Using Thermoelectric Effect on Concrete Structure in Road
Authors: Lee Jae Jun , Kim Dae Hun , Lee Seung Tae , Lim Jae Kyu
Published: October 2014

Energy harvesting from wasting natural energy is a keen interested in research topic in order to find environmentally friendly energy source because of climate change. This paper was investigated energy harvesting issues using thermoelectric technology which used a temperature gradient to generated electricity. This paper describes the investigation of an energy harvest system to be installed on the infrastructure that was constructed with concrete. The system will collect energy from the temperature difference between surface and inside of concrete structure. This paper presents a feasible energy harvesting using the thermoelectric technology on concrete structure in road.
Numerical Simulation of Ignition of Coke-Oven Gas on an Industry Boiler
Authors: Shi Hong Wei , Wang Shuai , Wang Dong , Zhang Xing Kai
Published: October 2014

Some coking plants discharge coke-oven gas to the environment,this pollute the air.In order to solute the problem,the paper proposed a method:using coke-oven gas instead of light oil to ignite the boiler.The virtue of doing this was to save energy.Using FLUENT software package to simulate ignition in boiler is a effective mean,it can show the distribution of temperature in the furnace.The simulation result shows that using CFD methods can provide ideas for the operation of the boiler.Keywords:numerical simulation,CFD,finite-rate/eddy-dissipation
Supercritical Fluid Extraction of Lipids and Enrichment of DHA from Freshwater Fish Processing Wastes in Thailand
Authors: Chimsook Thitiphan
Published: October 2014

Nowadays, an awareness of health benefits of omega-3 has been found. Polyunsaturated fatty acids, especially DHA, are more attention due to their role in human health. Hence, this study investigated the potential of by-products as freshwater fish source of omega-3 polyunsaturated fatty acids (omega-3 PUFAs). The by-products of processing accounted for approximately 55% of the catfish industry. Supercritical fluid extraction (SFE) of the by-products at 35 MPa, 40 ◦C, ethanol (95%, v/v) as the co-solvent, and the mass ratio of by-products to co-solvent as 1:1 generated a lipid yield at 30.9% and 21.5 % docosahexaenoic acid (DHA). Additionally, urea complexation was an effective tool to enrich and purify DHA from lipids. DHA purity increased from 21.5% to 38.4% under the optimum complexation condition.
Thermal Characteristic Analysis of Rectangular and Large-Capacity Lithium-Ion Power Batteries
Authors: Lin Chun Jing , Xu Si Chuan , Chang Guo Feng , Li Zhao
Published: October 2014

Operating temperature and thermal uniformity have great effect on the performance, cycle life and safety of lithium-ion power batteries. In order to investigate the surface temperature change and distribution of a large-capacity and rectangular LiFePO4/C power battery, this paper conducts experiments on charging and discharging a battery module and cell at different current rates and various ambient temperatures. Results of thermalcouple-measurement show that temperature rising rates at different temperatures during charge and discharge change in accordance with the variation tendency of the resistance at different state of charge (SOC) and oprating temperatures. Under elevated ambient temperatures, the temperature excurtion and maximum temperature difference of the module are all smaller. Under the same ambient temperature, battery temperature at the end moment of discharge increases and the temperature uniformity of the module deteriorate at higher discharging rate. Temperature excurtion over the same time period is in a relationship of a standard quadratic function with the discharge current. Results of the thermal infrared imaging tests show that the maximum surface temperature differences at different discharging currents of 20A, 40A, and 80A are all above 5°C under natral convection heat transfer. The temperature of the lower part is higher than that of the upper part, while that of the central area is the highest. In a comprehensive charging and discharging scheme, the tendency of maximum surface temperature difference changes in accordance with that of the average surface temperature.
Fuzzy Comprehensive Evaluation of Water Quality Management Information System
Authors: Wang Xin , Pan He
Published: October 2014

Water environment assessment is a basic and important work of water resources protection. We set up a fuzzy comprehensive evaluation of water environment based on fuzzy theory and prediction method in this paper. The comprehensive assessment of water environmental quality relates to complicated phenomena and interaction of multi-factor of evaluation. There are plenty of fuzzy phenomena and fuzzy concepts, therefore, make quantitative processing by the comprehensive evaluation method of fuzzy is a good choice to get good results.
Research on Optimization of Perforated Horizontal Wells with Separated Production Scheme Based on Genetic Algorithm
Authors: Liu Shan , Tong Deng Ke , Tang Shu Heng
Published: October 2014

Based on the separated production scheme of perforated horizontal well, the production is closely related to the number, length and location of horizontal intervals. New reservoir / wellbore coupling models were modeled which included two boundaries: closed boundary and constant pressure boundary. For these coupling models, two new optimization models were modeled, which took the production as the objective function and took the length and location of horizontal intervals as the optimization variables. Then the numerical calculation models were proposed by using the Gauss-Laguerre quadrature formula. Applying the genetic algorithm and writing the numerical stimulation software, the optimized schemes with 2 segments, 3 segments and 4 segments for planning intervals of the perforated horizontal wells were presented. By comparing the optimized schemes, we can see that the horizontal well production was not infinite increasing with the length of horizontal intervals, but only in the suitable length of horizontal intervals to maintain high production. And it is not the more segments the higher production. For the perforated horizontal well in closed reservoir, the production was the highest based on the optimized schemes with 3 segments.
Two Kinds of Models Based on Fiber Grating Sensing Technology to Calculate Overhead Lines Sag and their Performance Comparison
Authors: Liu Zhi Ming , Zhang Zhi Guo , Li Lu Ming
Published: October 2014

This paper is for real-time monitoring sag problem of overhead lines, modeling two kinds of models with the state equation of catenary line and parabolic method, which are based on fiber grating sensing technology and take advantage of the conversion relationship of overhead line length between different states. The performance comparative analysis is carried out between the two models and currently relatively mature angle method. Experimental measuring results show that under the same conditions, the monitoring results of two models are very near to the monitoring results of angle method. But relatively speaking, monitoring results of the catenary model are more accurate. The accuracy of models can meet the project requirements and two models both can monitor overhead lines sag effectively in real time.
Manufacturing and Hoisting Technology for Reinforcement Cage of Deep Foundation Excavation Bored Piles
Authors: Zhou Xin , Fang Guang Xiu , Zhang Ping , Leng Yuan Qing
Published: October 2014

Combined with the Beijing Business Center (CBD) core district Z14 plots commercial finance project (hereinafter referred to as the "CBD project") foundation pit construction, introduces the deep foundation pit of bored pile reinforcement cage fabrication and erection construction technology. In the construction process, through the site set up a special steel processing and production platform, the localization of the flange and other measures to solve the steel reinforcement cage positioning and connection construction difficulties. Combining the engineering fact, detailed calculation process of lifting steel cage hanging position, lifting machinery and hoisting rigging selection, and through the ANSYS software of finite element analysis and put forward specific measures to ensure the quality of steel reinforcement cage.
Active Infrared Thermography for Defect Detection of Polyethylene Pipes
Authors: Zhu Zhi Bin , Qiu Xu , Zhong Shun Cong , Fu Xi Bin , Yang Xiao Xiang
Published: October 2014

We present defect detection of polyethylene (PE) pipes by using active infrared thermography technique. A finite element model was built to mimic the transient heat transfer in PE pipes, in which constant heat flux boundary condition was applied to the inner surface of the PE pipes. Various defects with different diameters and depths were simulated in PE pipes and they would affect the thermal distributions from which the relation between thermal images and defect sizes and locations would be established. An electrical heating bar, as the novel thermal excitation source, was employed in active infrared thermography experimental system. The finite element simulation results are well agreed with the one obtained from the infrared imaging experiments and it demonstrated that finite element numerical method can be an effective method to analyze infrared imaging. Furthermore, defects in heat fusion joints of PE pipes were fabricated and detected by the developed active infrared thermography. The experiment showed that active infrared thermography based on an electrical heating bar could provide a novel tool for nondestructive evaluation of PE pipes.
Application of Fuzzy Neural Network in the Intelligent Control of Biomass Gasifier
Authors: Gong Qin Hui
Published: October 2014

In view of biomass gasify process which has nonlinear, non-minimum- phase, big delay and strong load interference characteristics, a fuzzy neural network control algorithm for biomass gasifier is presented. Gasified process of biomass gasifier has been researched, and intelligent control of temperature and primary air flow for biomass gasifier has been designed. The control objects are gasifier temperature and flue gas oxygen content , the regulation objects are the material feed flow and primary air flow. Simulation results show that, this system has better control effect than the traditional fuzzy control system.
Comparative Study on Several PQ and V/f Controller Models in Micro-Grid
Authors: You Wen Xia , Zhou Zi Heng , Chang Jun Xiao , Sun Gang
Published: October 2014

Many references have been focused on PQ controllers and V/f controllers, but there are some models with different components share the same control strategy. These models have different simulation results of their own. In this paper, two ordinary PQ controllers and two ordinary V/f controllers have been chosen to study the simulation results of them by Matlab/Simulink. By analyzing voltage and current waveforms of load, it has been decided which PQ controller has result which contains less unbalanced current and less harmonics, and so it is with the V/f controllers. Then the chosen controllers have been applied to an example of Master-slave control strategy for a simple micro-grid, which furthermore proves the dynamic quality of the chosen models. In this way, the problem to choose better models is solved.
Numerical Simulation of Semi-Solid Die Casting Technology of Bearing Cage
Authors: Wang Yong Fei , Zhao Sheng Dun , Zhang Chen Yang
Published: October 2014

Semi-solid die casting instead of conventional casting was used to produce bearing cage, Model of semi-solid die-casting was established based on power cut-off (PLCO) model and ProCast 2008 to simulate the effects of processing parameters on deformation process, through orthogonal experiment and analysis of defects, the reasonable technological parameters for using A356 aluminum alloy to finish semi-solid die casting of bearing cage were obtained: the pouring temperature was580°C, the preheating temperature of the mould was 200°C, and the injection velocity was 20 mm/s.
Design and Application Analysis of Coal Mine Belt Conveyor Automation System
Authors: Zhao Peng Ju , Zhu Yu
Published: October 2014

In recent years, with the continuous development of our society and economy, coal mining is also expanding the scale, and belt conveyor is widely used in coal mine production as a belt conveyor device. However, in practice, due to the low mass of reactive power, large loss of reactive circulation and large starting current, belt conveyor threaten the safety of coal production in addition to bring enterprises the economic losses. In this context, the realization of coal belt conveyor automation system design can not only reduce maintenance costs, extend working life, but also ensure life and property safety of mine workers, and ultimately improve the social and economic benefits of enterprises.
Design for a S7-200-Based Boiler Temperature Cascade Control System
Authors: Yang Xin Hui
Published: October 2014

This paper describes a boiler temperature cascade control system using PLC as the controller. Here, PLC is used to control the voltage across the resistance wire inside the heater (Control Parameter). This is done in order to regulate the water temperature at the outlet (Primary Parameter to Control) and the water temperature inside the hearth (Secondary Parameter to Control) of the boilers (Object to Control). Using a PID algorithm, the system is able to automatically control the boiler temperature by programming the language - PLC LAD Ladder Logic Diagram.
Research on Intelligent Monitoring System on Tunnel Based on Neural Network
Authors: Liu Liu , Ma Cheng Qian
Published: October 2014

According to characteristics of monitoring system, firstly, making some preliminary processing for history database through the Apriori algorithm of association rules. So that digging out some useful data for the system, and concluding the initial sample data. Secondly, analyzing, training and processing the data using artificial neural network to make the monitoring system control strategy intelligent. On the other hand, the model can be used to forecast some useful data for monitoring system, to make management of tunnel more efficient.
Study on the Fault Diagnosis of Gear Pump Based on PNN Neural Network
Authors: Zuo Gui Lan , Lai Shang Ding , Cheng Yue
Published: October 2014

The principle of neural network’s PNN algorithm was introduced, Combining with the structure feature and work principle of the hydraulic pump, a fault diagnosis system based on PNN neural network was established. The feasibility of the system was proved through the identification, emulation and experimentation of hydraulic system’s fault patterns. The PNN control model was simulated using Matlab/Simulink toolbox. This model analyzed and studied the PNN network predictive diagnostic rate. Under different sample size and SPREAD, the simulation’s results show that this method has favorable identified capability of fault mode and favorable applicability to the hydraulic pump.
Preparation of Helical Monosubstituted Polyacetylene@CdSe Quantum Dots Composite and its Application for Low Infrared Emissivity
Authors: Bu Xiao Hai , Zhou Yu Ming , He Man , Zhang Tao , Wang Hu Chuan
Published: October 2014

Helical monosubstituted polyacetylene@CdSe quantum dots (HPA@CdSe QDs) nanocomposites were fabricated by grafting helical HPA polymers onto the surface of semiconductor QDs through ester linkage. Optically active HPA derived from chiral serine was polymerized by a rhodium zwitterion catalyst, and evidently proved to adopt a predominately single-handed helical conformation. The HPA@QDs nanocomposites were characterized by Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The results indicate that the HPA matrix exhibits an enhancement in thermal stability after hybridization with CdSe QDs, while the QDs can maintain their original crystalline structure during the grafting process. The infrared emissivity property of the HPA@QDs nanocomposites at 8-14 μm was further investigated. These data demonstrated that the HPA@QDs composite film with doped CdSe QDs possesses an infrared emissivity value of 0.393, which was much lower than pristine HPA and QDs. This might be attributed to the incorporation of optically active helical HPA and semiconductor QDs in a hybrid phase and their strengthened interfacial interaction.
Temperature Control System of Chamber Electromechanical Based on Incomplete Differential PID Algorithm
Authors: Hu Guang , Fu Xue Qiang , Nie Meng Ya , Li Hao
Published: October 2014

This article introduce electromechanical chamber temperature automatic control system based on the incomplete differential PID algorithm.The system is through the temperature, humidity and flow sensor to collect signals . We get Corresponding current from PLC corresponding analog acquisition modules. Via PLC embedded Improved PID algorithm to calculate the appropriate control signals to the electric control valve actuator, Can effectively reduce the ambient temperature downhole electromechanical chamber.
Converter Station VBE Signal Monitoring System Based on LabVIEW
Authors: Wu Tong Tong
Published: October 2014

Valve base electronic systems (VBE) achieve the effect of controlling the rectifier and inverter by triggering the thyristor breakover or turn-off. This paper based on the LabVIEW interface display software, through the data acquisition card, Art USB2830, real-time acquire the main signal of VBE, namely monitoring the main signal of system, in order to analyze the causes and location of system failure.
Preparation of Photoluminescent ZnSe/PAMAM Nanocomposites
Authors: Jin Yu Juan , Zhang Teng , Qiu Mu Nan , Zhao Ting Ting , Jiang Kai Li , Wang E E
Published: October 2014

Uniform and well-dispersed photoluminescent semiconductor ZnSe (zinc selenium) QDs (Quantum dots) were in-situ prepared stabilized by G4.0-NH3+PAMAM(polyamidoamine) dendrimers in methanol. The properties of ZnSe QDs encapsulated in PAMAM dendrimers were characterized by UV-Vis absorption spectra and photoluminescence (PL) emission spectra. The results were: ZnSe/PAMAM NCs (nanocomposites) with molar ratio 15 emitted strongest fluorescence.
The Application of TRIZ Theory in the Rub Drum of Reverse Data Acquistion and Modeling
Authors: Ye Xuan Lin
Published: October 2014

Based on the actual processing problem of rubbing the drum parts without drawing, the author conducts the research to the rubbing the drum real reverse engineering, then in view of the existing reverse engineering data acquistion problems, is analyzed by TRIZ theory, according to the technology contradiction solve method and combined with the actual situation of the problem, the feasible solutions obtained, to provide reference for the engineering and technical personnel.
Simple Synthesis of Mesoporous SnO2 Microspheres and their Gas Sensing Properties
Authors: Sun Zhi Peng , Lu Yi
Published: October 2014

In this work, uniform mesoporous SnO2microspheres have been prepared via a facile and scalable method using tin tetrachloride pentahydrate (SnCl4·5H2O) and resorcinol-formaldehyde gel (RF gel) as starting materials. Furthermore, the structure and morphology of the as-prepared product were characterized by scanning electron microscope (SEM), Transmission electron microscope (TEM) and X-ray diffractometer (XRD). The results revealed that as-synthesized microspheres were around 500 nm in size and composed of large amount of SnO2nanoparticles with diameters of 10-20 nm. Gas sensors based on mesoporous SnO2microspheres were fabricated, and their gas sensing properties were tested for response to methane, butane, H2and CO gas. The sensor exhibited better sensitivity and selectivity to H2vapors at 300 °C than that of the conventional SnO2materials. The enhancement in gas sensing properties was attributed to their unique nanostructures.
A Design of Roadheader Simulation Training System
Authors: Wang Da Hu , Chen Wen Bo , Shi Yan Nan
Published: October 2014

Because of the lacking of realistic, the operators who use the existing simulation training systems cannot immerse into it. This paper presents a method that taking the EBH-120 roadheader as an example to solve the problem, with the method a motion simulation method based on physics engine is figured out. It uses 3ds Max for making 3D models and Newton physics engine for dynamic simulation. The result showed the roadheader simulation training system with real physics properties was developed based on Quest3D and Newton physics engine; it can improve the immersion of this system, and increase the deficiency of coal mine training field.
A Direction of Arrival Estimation Method for Wideband LFM Signals Based on RWT and ESPRIT Algorithm
Authors: Xu Jian Zhong , Yu Fu Qiang , Duan Ping Guang , Li Shu Hua
Published: October 2014

In this paper, we proposed a new algorithm to estimate the direction of arrival (DOA) for wideband linear frequency modulation (LFM) signals, using Radon-Wigner transform (RWT) and estimation of signal parameter via rotational invariance techniques (ESPRIT). To eliminate the cross-terms, we first utilize the RWT with its excellent time-frequency concentration performance. Then, through peak searching, the number of targets, the initial interference and the frequency modulation slope are estimated. On the this base, the array signals are reconstructed. Finally, we adopt the ESPRIT algorithm to estimate the DOA of the array signals. The simulation results show that the proposed algorithm can estimate the DOA of non-stationary signals with high precision.
Preparation of Pineapple Leaf Cellulose Membrane
Authors: Zhu Xiao , Wang Yi Hong , Wei Xiao Yi , Li Ji Hua , Wang Fei
Published: October 2014

In this study, the pineapple leaf cellulose membrane was prepared after being dissolved in ionic liquid (1-butyl-3-methylimidazolium chloride ([Bmim]Cl)) and high pressure microfluidization process. The chemical morphology and structure of cellulose membrane were measured by scanning electron microscope (SEM), fourier transformed infrared spectra (FT-IR), extension test and thermogravimetric analysis (TGA). Resules indicated that after microfluidizer, the surface of membrane became smoother, however the tensile strength and thermal stability of cellulose membrane was decreased due to the shearing action of microfluidizer. This would broad the application of cellulose membrane widely.
Construction Research by Introducing Sense of Place into Cultural Landscape Design in Ethnic Areas: A Tentative Approach to Intensify Place Identity
Authors: Liu Hong Fang , Ming Qing Zhong , Lu Fen
Published: October 2014

Cultural landscape reflects the historical and traditional heritage of a place and has a symbolic significance and function. Place identity is a kind of psychological experience gradually achieved through perception, acceptation and satisfaction with a place and by living for some time in certain environment. The widespread and rapid acceleration of modernization and globalization lead to many places achieving "non-places" characteristics and homogenous landscapes, even in ethnic areas. This construction research attempts to grasp the inner relationship between cultural landscape and place identity in ethnic areas, and introduce the theory of sense of place and some methods that may shape rational cultural landscapes, seek some specific constructing measures to make the cultural landscapes more harmonious with environment, hence to enhance and strengthen place identify of ethnic groups and cultivate the delicate physical culture landscape against the background of emerging globalization.
Calculation of Interaction Force between Pipe and Water of HVAC
Authors: Luo Zhi Bin
Published: October 2014

On the basis of the pipe network hydraulic calculation of basic theory, the pipe network utilization, using graph theory and peak array build relationships and storage node and pipe sections between the pipeline node associated with the hydraulic parameters of pipe sections linked together establish a common heating pipe network hydraulic calculation models. Matrix for the model were derived solving ideas based on the finite element method and linearization method for existing node equation method to improve to get a new heating network hydraulic calculation methods common to construct a new iterative calculation equation, to improve the convergence of iterative calculation.
Simulation Analysis of Coupled Automobile Chassis Suspension and Steering System
Authors: Li Li Yun
Published: October 2014

Suspension and steering systems are the two important subsystems of the vehicle chassis, and the two are not independent of each other, but are closely linked, so the coupling relationships between the two need to be considered to make the integrated control. Based on the tire force, dynamic load distribution, coupling movement relations, and coupling its structure and control parameters, a dynamic model of tire and suspension control system for is built to provide a model basis and research base for the study of the vehicle chassis system control.
Research and Experiment on Energy Supplement Technology for Underwater Marine Instruments Based on Tidal Current Energy
Authors: Zhu Wan Qiang , Wu Bai Gong , Dong Yong Jun , Guo Jing Fu
Published: October 2014

At present, with the gradual development of marine technology, application of marine monitoring instruments is becoming increasingly wide, for which there are more and more types of such instruments, and an increasing amount of electric energy is thus consumed. Continuous working period of such instruments and the further extension of their functions are obviously restricted by the link of electric energy supplement. Tidal current energy is a renewable energy in abundant reserve. In this paper, an electric energy supplementing device for drag-type marine monitoring instruments based on electricity generation with tidal current is designed, and its good functions are proved through water tank experiment, for which it can provide energy supplement to marine monitoring instruments.
Research on the KingSCADA Crude Oil Transmission Separator in Oil Level Automatic Control System
Authors: Liu Na
Published: October 2014

Using industrial machines, magnetic sub-level transmitter, AI Artificial Intelligence regulator, Germany HERION solenoid valve for the hardware platform, and KingSCADA configuration software for software platform, constituting Crude Oil Transportation separator oil level automatic control system, according to the production process requirement automatically keep the oil level in a need value, then realize automatic oil level collection, display, record, remote transmission, the visual interface.
Low-Power Design and Analysis of Heat Flux and Temperature Acquisition System
Authors: Cheng Guang He , Sun Rui Rui
Published: October 2014

Due to construction projects testing requirements work continuously for more than a week or even a month or so, so for a battery-powered portable heat and temperature acquisition system, its power consumption has the constraints. In accordance with the need of the acquisition system of actual engineering, this paper from two aspects of hardware and software to consider heat flux and temperature acquisition system of low power design, specific design ideas and implementation methods is also given in this paper. The test results demonstrate that the sleep state, the actual operating current is 0.59mA. A nominal 1000mAh lithium battery, the case of the sleep wake of five minutes, can work continuously for about 20 days, the case of 10 minutes to wake up dormant, can work continuously for about a month.
Applied-Information Technology in Abnormal Detection for Surveillance Systems
Authors: Xu Feng
Published: October 2014

In recent years, video surveillance has become more and more important for enhanced security and it is indispensable technology for fighting against all types of crime with the construction of sky-net in China. Abnormal detection is the focus of intelligent video surveillance and the information of abnormal behavior can be used in the investigation of criminal cases, which combines computer vision and artificial intelligence technology and has wide application prospect in public security work. In this paper, first the current research situation of the intelligent surveillance system is introduced. Then the category of abnormal behavior detection is expounded. Finally the function module of abnormal detection system is designed and the key technology of moving target detection, target tracking and abnormality judgment is discussed in view of the actual situation of surveillance system in criminal cases.
Multi-Thread Chain DMA Data Transfer Method for SuperSpeed Bus Video Transmissions
Authors: Lian Ping Ping
Published: October 2014

SuperSpeed bus, also known as USB3.0 bus or SuperSpeed USB bus, is the newest USB bus technology. This paper presents an innovative DMA transfer method called Multi-thread Chain DMA for SuperSpeed bus video data transmissions. The maximum 5Gbps giant data rate of SuperSpeed bus demands a high speed and high reliability DMA method. However, traditional DMA method can not achieve this required data rate due to its separate data transmission and reception. Unlike traditional DMA method, utilizing a novel designed mechanism, Multi-thread Chain DMA transfer method transmits and receives data concurrently, achieves SuperSpeed data rate and guarantees no data loss. Furthermore, one communication protocol for SuperSpeed video transmission is designed and implemented to comply with USB Video Class (UVC) standard. The field trial has demonstrated Multi-thread Chain DMA transfer method and SuperSpeed video communication protocol in the article are feasible and rich in value of research.
Design of X-Band Frequency Source Based on PLL Technology
Authors: Zhao Shuang , Zhang Le Le
Published: October 2014

The frequency synthesizer is an important part of modern communication system. It is widely used in digital communications, satellite communications, remote telemetry, radar, navigation and other fields. For frequency source with low phase noise and low spurious, this paper gives hardware architecture and implementation method circuit realization of the X-band frequency source which use phase locked and frequency multiplier theory. Its main targets are tested. The test results show that the performance of the frequency synthesizer is preferably with lower spurious level and phase noise.
Design of Ka-Band Conformal Microstrip Patch Antenna
Authors: Zhao Shuang , Chen Dian Ren
Published: October 2014

It is very difficult to accurately analyze the performance of the antenna conformed to the elastomer because of the complex structure. Conformal coordinate method is an effective method for analyzing the complex structure of the antenna. Based on the conformal coordinate method, the millimeter-wave monolithic conformal microstrip antenna is analyzed in this paper. Using the traditional way of microstrip-fed - the middle microstrip feeding, we design the microstrip patch unit. Then we use the HFSS to simulate the antenna.
Experimental Study on Combustion and Explosion Characteristics of Diesel
Authors: Lei Zheng , Lu Chang Bo , An Gao Jun , Xiong Chun Hua , Xie Li Feng
Published: October 2014

In order to study the combustion and explosion characteristics of-10 military diesel and-35 military diesel, using combustion performance testing device tested the combustion performance of diesel, and analyzed the combustion performance at different temperatures. Using explosion sphere vessel tested the explosion parameters of the diesel to evaluate the explosion performance. The results show that the combustion performance of-35 military diesel are better than-10 military diesel, the maximum explosion pressure and maximum temperature have a rising trend with the pressure spray increase. The maximum explosion pressure of-10 military diesel is larger than that of-35 military diesel at the same spray pressure and the maximum explosion temperature of-35 military diesel is higher than that of-10 military diesel. The results of the two kinds of diesel can be used to evaluate their characteristics and safety.
The Application of Broadband Power Line Carrier Communication in Electric Energy Data Acquisition Remote Communication
Authors: Li Ji , Zang Zhi Bin , Lin Da Peng , He Ye Shen , Xie Jing Jing , Hong Hai Min
Published: October 2014

The remote communication is an important part of electric energy data acquisition system. Currently, the electric energy data acquisition remote communication has these disadvantages such as high costs of GPRS rental , poor reliability and it’s hard to meet the demand of real-time fee control and other senior business. To solve these problems, this paper proposes a solution for electric energy data acquisition remote communication channel by using built fiber access network to combine with broadband power line carrier communication technology .This solution have achieved a good result through field pilot application and validated the feasibility of it.
Research on Remote Fault Diagnosis System with Design of the Mine Enterprise Equipment Based on VPN
Authors: Zhu Ling Li , Tan Qing
Published: October 2014

Remote fault diagnosis in order to realize the mining enterprise equipment requirement, reduce the cost of fault diagnosis system based on VPN remote fault diagnosis system scheme is put forward. VPN technology to establish the enterprise network system, it is reasonable to implement remote connections between corporate headquarters to the mines. It can always track the running status of equipment working in the field of improving customer service response speed. Users can use it to avoid safe hidden trouble, as far as possible to shorten downtime, increase productivity. Field operation shows that our designed system can quickly diagnose the cause of the problem in time to provide a good reference.
Novel Model of Wireless Sensor with Indoor Positioning Algorithm and Time Synchronization Protocol
Authors: Zhang Qiu Hong , Jin Liang
Published: October 2014

This paper describes the positioning based on ZigBee network, and it provides location indoor information and node state alarm information. Wireless sensor indoor positioning system consists of 3 types nodes: the coordinator node, reference node and blind. Time synchronization protocol is an efficient synchronization technology star network structure, synchronization to the gateway node as a starting point, each cluster head node synchronization tree network structure. The paper presents novel model of wireless sensor indoor positioning algorithm and time synchronization protocol. Experiments show that the design of indoor positioning system can meet requirement function and performance of nodes positioning system.
A Semi-Persistent Scheduling Algorithm for VoIP in LTE-Advanced System
Authors: Wu Wei , Sun Jun , Wu Tong Hui
Published: October 2014

The scheduling algorithm is one of the key technologies in LTE-Advanced system. In this paper, a semi-persistent scheduling algorithm designed for the VoIP service in LTE-Advanced system is proposed. The time-frequency resource will be allocated to the users according to the semi-persistent scheduling algorithm based on the gain for each user on the certain RB. By introducing the mechanism and procedure, analyzing the proposed semi-persistent scheduling algorithm combined the source coding (SC) or modulation and coding scheme (MCS) techniques, the superiority of the proposed algorithm is shown. The simulation results indicate that the performance of the proposed semi-persistent scheduling algorithm is better than the traditional algorithms in term of resource utilization ratio, system throughput and scheduling success rate.
Data Processing in Biological Behavior Analysis of a Delayed Impulsive Lotka-Volterra Model with Mutual Interference
Authors: Hu Xiao Min , Wang Hui , Hu Zhi Xing
Published: October 2014

A delayed impulsive Lotka-Volterra model with mutual interference was established. With the help of Mawhin’s Continuation Theorem in coincidence degree theory, a sufficient condition is found for the existence of positive periodic solutions of the system. A numerical simulation is given to illustrate main results.
Available Lane Detection Based on Radon Transform
Authors: Deng Xi Xi , Wang Xiao Nian , Zhu Jin
Published: October 2014

To solve lane detection problem in the system of autonomous vehicle, this paper proposes a method of texture segment based on perspective transformation. In this paper, firstly road images were captured through cameras installed on the vehicle, then make a perspective transform to road plane, so that the road and the non-road texture information effectively stand out. After calculation of the texture trend in the transformed image, radon transform can effectively distinguish between the road and the non-road area, and achieve the purpose of the texture regional segment. Experiments prove that this method can be used on the lane detection, which eliminate barriers and road borders effectively.
Research on Applied-Information Technology with Data Distribution for Light Field Camera Array
Authors: Wang Jing Yi , Gao Hang , Shen Chun Lin
Published: October 2014

The collection of light field is a key part of 3D image rendering and multi-view display system construction. Data exchange of light field frequently used in light field camera array requires high real-time performance and high bandwidth. This paper presents a new method of light field data exchange by applying data distribution service (DDS). Experiment results show it is feasible to apply data distribution service to the light field camera array.
Research on Database and Information Technology in the Decision Tree of Communication Construction Scheme
Authors: Peng Yong Jun , Peng Yang , Liu Ci Fang
Published: October 2014

With the development of database technology as well as the widespread application of Database management system, our capabilities of both generating and collecting data have been increasing rapidly. In addition, popular use of the World Wide Web as a global information system has flooded us with a tremendous amount of data and information. This explosive growth in stored or transient data has generated an urgent need for new techniques and automated tools that can intelligently assist us in transforming the vast amounts of data into useful information and knowledge. The Data Mining technology brought forward. Data mining, also popularly referred to knowledge discovery from data (KDD), is the automated or convenient extraction of patterns representing knowledge implicitly stored or captured in large databases, data warehouses, the Web, other massive information repositories, or data streams. Data mining is a multidisciplinary field, drawing work from areas including database technology, machine learning, statistics, pattern recognition, information retrieval, neural networks, knowledge-based systems, artificial intelligence, high-performance computing, and data visualization. Database and Information Technology in the Decision Tree of is very important for the military. The Data Mining had been applied and studied in these years, and it has been applied in many domains successfully, such as business, finance and medical treatment. However, little is applied in communication construction scheme.