bluuebunny/crossref_metadata_2025 huggingface dataset:
Transient Stability Study of Power System Integrated with Doubly Fed Induction Generator Considering Different Integrating Points
Authors: Fang Pan Yu , Wang Zeng Ping , Chen De Zhi
Published: March 2014

Doubly-fed induction generator has become one of most popular generators driven by wind due to its superior behavior in power system. Because of the different physical structures between doubly-fed induction generation units and normal synchronous units, they behave differently in the failure of power system. Based on the analysis of transient behavior of doubly-fed induction generator units, the transient stability of power system integrated with doubly fed induction generator considering different integrating points is discussed. The simulation results verify the validity of the conclusion at the last of this paper.
Design of Lock-In Amplifier Based on Down-Sampling Mean Filter
Authors: Guan Wen Tao , Yang Zhao Hua , Cao Yu Peng
Published: March 2014

Low-pass filter is an integral part of lock-in amplifier, low-pass FIR or IIR filter is typically used in lock-in amplifier, which need a large number of multiplications and occupy more hardware resources. To reduce cross-correlation computing requirement of multiplications, this paper, designed orthogonal vector lock-in amplifier based on the down-sampling dual mean filter. Experiments show that, the digital amplifier has good detection performance and noise or clutter suppression.
Keywords: lock-in amplifier, mean filter, down-sampling, Gaussian noise suppression, clutter suppression.
Transformer Oil Chromatographic Analysis of Data Anomalies Caused by Harmonics
Authors: Zhang Hua , Zhao Chaun Zong , Wang Qing Hao , Chen Rui Guo , Wang Yong , Liu Bo , Li Jin Ye , Zhang Ning , Hai Tian Shu , Li Bo
Published: March 2014

According to the 66kV transformer blackout phenomenon, the oil chromatogram data analysis, found that the transformer existed temperature (676 °C) and low energy discharge defect. Through measuring the harmonic content to and analyzing the load condition, test results show that the grid was injected harmonic currents by the substation non-linear loads, its 5 times,7 times, 11 times, 13 times harmonic were higher than the state standards, this shows that the harmonic is the cause of the chromatographic data of transformer oil abnormal
The Simulation Research of Suppressing Harmonic for 3-Phase Commutate System with DC/DC Converter
Authors: Li Yan , Su Xue Jun , Li Yun
Published: March 2014

Along with the development of power electronic technology, harmonic and reactive power problem for power system are increasingly serious. 3-phase Commutate System with DC/DC Converter is widely used power system, and its power factor generally very low. Circuit design can increase power factor and decrease THD for 3-phase Commutate System with DC/DC Converter , and then decrease the weight and volume . According to the simulation result ,we know that the 6kW DC/DC converter designed in this paper has lower THD , high PF . less weight , less volume and good steadiness , for example THD is less the 5%, and PF is greater than 95%.
An Improved SAR Controller for ADDLL Used in DVFS System
Authors: Fan Jin , Tao You Wu , Xu Tai Long , Cai Zhi Kuang , Zheng Chang Yong , Chen Jun Ning
Published: March 2014

An improved successive approximation register (SAR) controller for all digital delay-locked loops (ADDLLs) is proposed to overcome the dead lock problem of the conventional SAR controller by embedding a restarting circuit module into the conventional SAR controller. The ADDLL that adopts the new SAR controller can track the operating frequency variation after the first lock-in, keep the advantages of the SAR searching algorithm and satisfy the requirements of DVFS systems.
Power Allocation of Relay Selection in Coordinated Channel Based on Channel Statistical Information
Authors: Tian Yi
Published: March 2014

In order to balance between optimality and operation efficiency of relay selection algorithm, an efficient relay selection algorithm has been raised based on bit error rate (BER) in an amplify-and-forward (AF) collaborated relay network. The algorithm, based on characters of channel statistical information and system BER, adds gain parameter of equivalent channel, sets SNR as threshold, select relay node assembly in the condition of same power, so as to minimize system BER. This algorithm has equal performance with Full Search Algorithm but with simpler calculation. Performance of the relay selection calculation BER is better than other algorithm by forwarding and preselecting an optimal relay node.
The Analysis of Automotive Wiring Harness Dynamic Crosstalk
Authors: Gao Yin Han , Wang Tian Hao , Yang Kai Yu , Zhang Jun Dong , Yu Jin , Yang Liu
Published: March 2014

Since the installation and strapping of the harness, and the vehicle motion state of the automotive is different. The crosstalk automotive wire harness is not a fixed value, but a certain dynamic range in the actual situation. Through the analysis of the factors of influence cable crosstalk can draw a conclusion that the cable relative position and disturbed line termination impedance is a major factor in the production of dynamic change. We analyze the dynamic range of crosstalk of 14 core wire harness model by using a statistical method, as a result of the change of the relative position of cable far-end crosstalk (FEXT) range within 1 dB, but when the disturbed line termination impedance changes from 50Ω to 1000Ω, the cable far-end crosstalk range reached 15 dB. It provides reference basis for the automotive wiring harness electromagnetic compatibility design.
A New SOX Simulation Model of Coal Combustion
Authors: Ye Jiang Ming
Published: March 2014

It is very important to study the emission of pollutant from a coal combustion device, and it is a best way to adopt numerical simulation for such a study. By using a mathematical model with a post-processing method and based on combustion simulation, this paper calculates the SOx distribution in a power plant boiler furnace. For the formation of SOx, a conventional chemical reaction model is adopted, and according to the principles of reaction dynamics, a model for the SOx formation is also put forward. It is the first time for preceding the calculation and on-site testing an 800MW-unit boiler in China. The test and calculation results show that the model is reasonable, and such a study will be valuable as a reference to the boiler design and its clean operation.
Research of Screening and Grading Method of Ageing Sensitive Objectives in Nuclear Power Plant
Authors: Liu Xiao Tian , Wang Yong , Niu Shao Rui , Zhang Yan Zhao , Shi Zhen Hao , Ti Wen Xin
Published: March 2014

This first step of ageing management in nuclear power plant is to determine the objectives and their priorities. The characteristics of the objectives are complex and highly nonlinear coupling. A fuzzy logic based screening and grading method have been developed in this research for the first time which combined the genetic ageing lessons learned and field expert experience to resolve the problem. The method have been approved of highly applicability and applied to ageing management in multiple nuclear power plants.
Coordinated Strategy for AGC of Thermal-Hydro-Wind Power and Energy Storage System
Authors: Luo Wei Hua , Feng Song Qi , Shi Yi Bin , Ge Wei Chun , Zhao Jun , Zhuo Jun Feng
Published: March 2014

Wind power is renewable energy, which has mature technology, considerable economic benefits and huge development scale. This paper proposes a coordinated strategy for AGC of Thermal hydro-wind Power and Energy Storage System which study the mathematical model of wind power and energy storage system, and the strategy of generation schedule, and key technologies of automatic generation control system (AGC) of four unequal interconnected Thermal, Wind, Hydro power plant and Energy storage.
Application of Temperature and Humidity Acquisition System in the Smart Clothing Based on Wireless Sensor Networks
Authors: Zhao Jing , Fan Xiu Juan , Liu Hao
Published: March 2014

In this paper, we use ZigBee technology as a platform, from the perspective of the practical application of smart rescue clothing, and then designed a temperature and humidity data acquisition system based on ZigBee wireless network technology. Combining electronic information with clothing as a starting point to build a wireless sensor network through wireless communication technology, then let sensor nodes which joined the network collect and monitor the temperature and humidity, thus, it avoided the cost of wiring problems and issues wired network. Meanwhile, using VC++ for acquisition system for the preparation of the PC program, draw a graph of temperature changes, which clearly reflect the real-time temperature trends. It is convenient for person to make remote monitoring. In this paper, the wireless sensor technology will be embedded on smart clothing, convenient and easy to carry, which has a strong innovative and practical value.
Dynamic Optimization Design and Research of PingQiao of the Abnormal High Tower Crane Based on the FEM
Authors: Yuan Si Cong , Xue Hua , An Feng , Wang Dong Hong
Published: March 2014

The dynamic performance of PingQiao of abnormal high tower crane is particularly important to the whole structure. Using the finite element method to set up the finite element parametric model of PingQiao of the abnormal high tower crane, and then making dynamic analysis. Taking the analysis result as the objective function of the optimization design model,and using the optimization algorithm module of ANSYS to make dynamic optimization design of PingQiao structure,the quality of PingQiao of the abnormal high tower crane is effectively reduced, the dynamic performance of the metal structure is improved,this lays the foundation for the whole optimization.
Downhole Tools Oil-Immersion Automation Test System Design
Authors: Shang Chun Min , Zhang Dong Mei , Zhang Xin Ming
Published: March 2014

According to the relationship of pressure and volume of the downhole tool oil-immersion test system during the pressuring process, the mathematical models of the pressure control was deduced about the downhole tool experiment system, based on the model, a test system of the multi function, high precision, high index, intelligent automation was designed and manufactured. The control system has friendly interface, manual/automatic and scene/remote control function, the test parameters and test process is free to set according to the actual needs of test tool, reports and graphs can be produce automatically, the test site achieve unattended operation that improving testing process safety. Test and application show that pressure control capacity of 150Mpa, pressure control accuracy of 0.35%FS.
Vehicle Detector Based on the AMR Sensor
Authors: He Hong , Zheng Rui , Zhang Zhi Hong
Published: March 2014

In order to solve the parking problems in cities which has loomed large, a vehicle detector applied digital three-axis AMR sensor HMC5843 for parking is proposed in this paper. The application of wireless sensor network technology and vehicle detection algorithm in this system realizes the accurate perception of the vehicle and the accurate judgment of parking space state.
Communication Net and MIMO Precoding Study on Wind Power Monitoring System
Authors: Cao Xin Li , Wen Yun Dong
Published: March 2014

Paper studies the design of MIMO antennas and channel precoding on data communication net of wind power monitoring system. Paper first analyses communication network model of monitoring system. Then configures MIMO in the base station. Paper explains MMSE-QR linear precoding, then give the algorithm of QR-MMSE-SIC in the case of known ideal or partial channel state information at transmitter. Finally, BER of several precoding models with and without precoding are analyzed. It gives a theoretical method of communication net configuring and precoding on wind power transmission net.
Combined Accelerations Produced by Vibrafuge
Authors: Dong Xue Ming , Guan Wei , Meng Xiao Feng
Published: March 2014

Various environmental factors will adversely influence accelerometers working in the field. Mixed inputs, including external causes and the intended acceleration, are important contributors to the problem. As a consequence, calibrating accelerometers with multiple accelerations is required by manufacturers and customers. We introduce a multi-component mechanical system called vibrafuge to provide multiple accelerations. In this paper, we deduce a general model of the accelerations reproduced by an ideal vibrafuge with homogeneous transformation of matrix. Based on the model, we have an elementary analysis of the components of the output acceleration and point out two byproducts. Investigation in this paper could lay the groundwork for vibrafuge testing of accelerometers.
The Monitoring Platform for Campus Security Based on Intelligent Assisted Vision
Authors: He Xing Na , Zhang Yin Fu
Published: March 2014

Rapid, accurate identification and location of abnormal situation are significant for campus security. The traditional abnormal detections on campus are mainly artificial, which is difficult to conduct accurate and timely action. This paper proposes an Android monitoring platform for campus security based on visual multi-state monitoring states. It uses multiple sensors to collect system information thus realizing advantages complementary, uses wavelet transform in data processing, based on campus feature extraction, to realize image fusion in the pixel domain, greatly improving the output SNR, which improve the results of identification and location of the abnormal situation on campus. Finally, we verify the algorithm by the disaster source in actual disaster environment. Results show that the fusion algorithm in this paper greatly improves performance of campus security monitoring system to identify and locate the source disaster.
A Sensor Node Localization Algorithm Based on Fuzzy RSSI Distance
Authors: Li Xiao Qin , Chen Guang Rong
Published: March 2014

The node self-localization is the basis of target localization for wireless sensor network (WSN), the WSN nodes localization algorithms have two types based on distance and non distance. The node localization based on RSSI is simple and widely used in application. According to the traditional WSN nodes localization algorithm, the RSSI signal intensity changes greatly and with nonlinearity. And it is converted into distance feature with a large deviation, which leads to inaccurate positioning and localization. In order to solve this problem, a sensor node localization algorithm is proposed based on fuzzy RSSI distance. The nodes information is collected based on RSSI ranging method. And the location information is processed with fuzzy operation. The disturbance from the environmental factors for the positioning is solved. The accuracy of the node localization is improved. Simulation result shows that this algorithm can locate the sensor nodes accurately. The localization accuracy is high, and the performance of nodes localization is better than the traditional algorithm. It has good application value in the WSN nodes distribution and localization design.
Nitrogen Removal with Nitrification and Denitrification via Nitrite
Authors: Xiao Jing , Tang Jin Hua
Published: March 2014

Biological nitrification and denitrification via nitrite pathway is technically feasible and economically favorable, especially when wastewater with high ammonium concentrations or low C/N ratios is treated. Therefore, it has attracted more and more attention. It is very important to maintain partial nitrification of ammonium to nitrite. In this paper, the factors that influence operation and efficiency of nitrification and denitrification via nitrite are discussed, including DO concentration, carbon source, aeration pattern, PH, temperature and high free ammonia. High ammonia concentration and temperature are prone to accomplish of short-cut nitrification and denitrification, but limit application in practice. Finally, the review discussed the future challenges for application of short-cut nitrification and denitrification.
Comparative Study on the Effect of Preparation of TiO2 and the Photocatalytic Degradation of Phenol Based on the Biological Template
Authors: Wang Jing , Sun Li Da , Li Zi Jing , Tang Yan Hua
Published: March 2014

This study combines the template method and sol-gel method, prepares TiO2 photocatalytic materials with the cotton, leaves and towel gourd as the template, and then makes degradation of phenol in ultraviolet light with the prepared TiO2 photocatalysts. The results show that all the photocatalyst prepared with three kinds of templates have high photocatalytic activity, among which, the catalytic performance of cotton is better, leaves secondly, and towel gourd’s relatively poor. With cotton as templates for the preparation of TiO2 under UV irradiation for 6h, the degradation rate was 80%, leaves as template for the preparation of TiO2 under UV irradiation for 6h, the degradation rate was 63%, and with towel gourd as template for the preparation of TiO2 under UV irradiation for 6h, the degradation rate was 52%.
Research on Biological Materials with Oxazinone Derivatives Induce Apoptosis in HT-29 Cells
Authors: Wu Yan Ling , Shen Li Wen , Ding Yan Ping , Wei Chuan He , Tanaka Yoshimasa , Zhang Wen
Published: March 2014

Objective: To monitor the induction of apoptosis in HT-29 cells by three compounds of oxazinone derivatives (A-C) with similar structures and research the mechanism of those oxazinone derivatives in induction of apoptosis in HT-29 cells. Methods: HT-29 cells were used for the determination of cytotoxicity elicited by oxazinone compounds. Cytotoxic effects of these compounds in HT-29 cells are monitored by a Real-Time Cell Analyser system. Results: All the oxazinone derivatives exhibited growth inhibition in HT-29 cells in a concentration-dependent manner. Conclusion: All the three compounds of oxazinone derivatives (A-C) could exhibit growth inhibition in HT-29 cells in a dose-dependent manner.
Influence of Gas-Liquid Distribution Inducer on Mass Transfer Coefficient in Rotating Packed Bed
Authors: Wu Fei , Wu Jie , Jin Mei , Wang Fang , Lu Ping
Published: March 2014

Based on acetone-H2O system, the influence of the gas-liquid distribution inducer on the mass transfer coefficient in the rotating packed bed with the stainless steel packing was investigated. Furthermore, the absorption performance was also obtained under the experimental condition of the rotational speed of 630 rpm, the gas flow rate of 2 m3/h and the liquid flow rate of 100 L/h in the rotating packed bed with different types and different installation ways of the distribution inducer. The experimental results showed that the volumetric mass transfer coefficient Kyα per unit contact length of gas-liquid was increased by 8.6% for the forward-curved fixed blade, by 19.8% for the backward-curved rotor blade and by 33.2% with the combination of the straight radial rotor blade and the backward-curved fixed blade, respectively. Furthermore, when the gas flow rate was 2.5 m3/h, Kyα per unit contact length of gas-liquid was increased by 2.9% for the forward-curved fixed blade, by 25.3% for the backward-curved rotor blade, by 42.7% for the combination of the straight radial rotor blade and the backward-curved fixed blade, respectively. The results indicated that the distribution inducer play an important role on the improvement of the mass transfer coefficient in acetone-H2O system.
Experimental Study on the Influence of Injection Timing on Combustion and Emission of Biodiesel Engine Based on Mechanical Mechanics
Authors: Lou Di Ming , Wu Yang , Hu Zhi Yuan , Tan Pi Qiang , Lin Jian Jun
Published: March 2014

This article investigates the effect of different injection timings on the combustion and emission characteristics of a Chinese V high pressure common rail diesel engine fuelled with blends of biodiesel and diesel (the volume ration of biodiesel is 20%). The Results show that, retarded injection timing resulted in decrease of ignition delay and combustion duration at all loads, except for 25 percent of full load. Peak cylinder pressure and maximum rate of peak pressure significantly reduced at retarded injection timing. The cycle-by-cycle variation of peak cylinder pressure first increased and then decreased, and the highest was obtained at -4°CA of injection timing. BSFC increased by 0.3% to 4.2% with retarded injection timing. Postponing injection timing effectively reduced NOx emission. NOx and PM emissions simultaneously decreased at full load when postponing injection. At 25% load HC and CO emissions were significantly higher than other loads and the effect of injection timing was most obvious.
Stress Research and Finite Element Analysis of Pile Clamping Mechanism of Hydraulic Static Pile Driver
Authors: Hu Jun Ping , Zhu Hua Dong , Li Ke Jun
Published: March 2014

For decreasing the stress and displacement of pile clamping mechanism of hydraulic static pile drivers in the process of pile driving, optimizing the pile clamping mechanism and improving quality of pile driving, the working principle of pile clamping and pile driving were introduced briefly. The parametric model of pile clamping mechanism was constituted in ANSYS; the main parameters of the model were set. The command-flow was programmed with APDL standing for ANSYS parametric design language. And then the serialization simulation analysis of pile clamping mechanism was achieved; the cloud diagram of Von Mises stress and the maximal Von Mises stress and displacement vector sum of pile clamping mechanism were elicited. The simulation results were analyzed.
Mechanical Mechanics and Calculation Method Research for Main Steam Flow of Turbine
Authors: Wang Zheng Xian , Li Bing
Published: March 2014

This paper use the Friuli Siegel formula for calculating the main steam flow. Analyzed the difference between using different stage pressure to calculate the main steam flow and the tested main steam flow. Other stages pressure that using for calculating the main steam flow can be used for comparative analysis.
Study on the Brush Plating Technology of High-Temperature Alloy
Authors: Li Jian Xia , Huang Jing Jing
Published: March 2014

Brush plating has been an important technology for the mending of the scratched surface of the engineering parts. The high-temperature alloys are common used heat-resisting material .The process for brush plating mending of deeply scratched surface of the parts made by high-temperature alloys is introduced, the technologic methods of high-temperature alloys are studied and analyzed, the merits of the brush plating mending technology of high-temperature alloys are discussed in this article.
Simulation of Two-Stage Fuel Reactor Chemical Looping Hydrogen Process Using Solid Fuel
Authors: Wang Long Fei , Wang Shu Zhong , Luo Ming
Published: March 2014

Chemical looping hydrogen (CLH) has become a promising technology for hydrogen production with inherent separation of carbon dioxide. Aspen Plus was used to simulate a two-stage fuel reactor CLH process of coal as solid fuel. Simulation results show that the two-stage reactor can fully convert the fuel and generate the maximum Fe0.947O component to react with the steam in steam reactor. The optimum OC/coal molar ratio in the two-stage fuel reactor was 2.8. The CO2 fraction of the flue gas in the fuel reactor reached 99% when the vapor was condensed at the temperature of 950 °C. The fraction of dry-based H2 in the steam reactor was nearly 100% when the steam reactor temperature was 700 °C and the steam/oxygen carrier molar ratio was 0.48.
Exploration of the Influence of the Environmental Temperature and Thickness of Fat on Heat Release
Authors: Zhang Chao Wei
Published: March 2014

Environment affects the body's physiological parameters mainly through the heat exchange, so as to make the person produce different thermal sensation. In this paper, by adopting the theory of heat balance, the law of heat release based on the environment temperature and fat thickness is analyzed.
Application of Video Capture Theory in Municipal Solid Waste Classification
Authors: Cai Ping , Wang Kun , Kong Song Tao , Li Jie
Published: March 2014

According to disposal situation of municipal solid waste (MSW) in China, the method of video capture was used to identify MSW, and classify the recyclable waste and non-recyclable waste. Verifying experiments were carried on by Plastic bottles in MWS. The results showed that, proposed method can identify MSW accurately.
Comparative Environmental Analysis of the Effects of Different Salinity Levels on Growth and Physiological Status of Nipponbare Rice
Authors: Fan Jing , Chen Li Ping
Published: March 2014

Salinity is a major environmental constraint limiting crop growth and yield in worldwide. This paper compared the salt induced damages to Nipponbare rice at germination and seedling stages. All rice samples were treated with four levels of salinity, growth and physiological status were then measured. Dose-dependent changes in rice growth parameters and peroxidase activity were observed. The growth parameters including germination percentages, germination indexes, root numbers, root lengths, shoot lengths and fresh weights decreased significantly at germination and early seedling stages when treated with NaCl greater than 100 mM. However, 100 mM NaCl was not enough to bring significant change of enzyme activity between the salt treated and untreated rice at late seedling stage, this suggests that rice at late seedling stage has stronger self-adjustment ability and more resistant to salt toxicity than that at early seedling stage. More serious inhibition of roots growth was also observed than that of shoots under salt stresses. This work is helpful for the development of protection strategy for rice production in saline areas.
Study on Environment Protection and Pedestrian Evacuation Characteristic in Subway Fire
Authors: Tian Juan Rong , Liang Dong , Liu Ting Ting , Zhou Xiao Qing
Published: March 2014

Designs a scientific questionnaire surveys according to the particularity of persons evacuation in metro, and sends them to passengers at random in metro. After thorough analysis and careful statistic of the questionnaire surveys data, obtains several regulations, such as the passengers personal parameters, present situation of the passengers safety consciousness, present situation of the passengers safety knowledge and passengers first reaction to fire etc. These data not only enriched the evacuation database of psychological and behavioral responses, but also provided more accurate and more effective supports for fireproofing design. At the same time, these conclusions also are good for the fire prevention and environment protection.
Characteristics of Particle Matter Pollution and its Control in Beijing
Authors: Qiu Cheng , Ye Chun Li , Yang Li Yong
Published: March 2014

"Particulate matter," or PM, is a complex mixture of extremely small particles and liquid droplets. PM is usually divided into PM10 and PM2.5. Once inhaled, these particles can affect the heart and lungs and cause serious health effects. PM2.5 causes the greatest health problems, and reduces the visibility (haze). Beijing is the capital of the Peoples’ Republic of China. The PM pollution in Beijing not only poses huge economic, environmental and healthy loses, but also impacts on the China government’s credibility and international image. The paper analyzed the characteristics of PM pollution and put up with some suggestions in order to provide some theoretical guidance for the government implementing environmental protection policy and pollution control measures. The paper indicates that the average mass concentration of PM in Beijing varies with time; PM emissions have increased in recent years; PM2.5 and PM10 are the primary air pollutants in Beijing; and finally the government should take effective measures to control particle pollution to realize the people’s hope that the sky becomes blue again.
Environment Research with Development and Application of a Low Cost and Long Life Ice Buoy for Arctic Environment Monitoring
Authors: Dong Yong Jun , Zhu Wan Qiang , Zhao Yang , Chen Jian Mei , Guo Jing Fu
Published: March 2014

The study on Arctic sea ice change and its influence to the global climate has become one of the most important scientific propositions. It is necessary to development the equipment with high reliability for monitoring Arctic sea ice change. In this paper, we design a low cost and long life ice buoy based on GPS and ARGOS PMT. The MCU of the system adopts low power consumption enhanced 8051 SCM (Single-Chip Microcomputer), which could collect the environmental parameters by all kinds of sensors, such as atmospheric pressure, temperature (air and sea ice), humidity, position of sea ice, and so on. Through optimizing circuit design and adopting intelligent power management method, the system could operate under very low power consumption. Meanwhile, we adopt the supercapacitor to supply the required large electric current of data transmission. By above methods, it efficiently prolongs the batteries life so as to ensure the long life of the ice buoy. Several prototypes of the ice buoy were deployed on the Arctic sea ice one and a half years ago, and some of them have still operated normally until now. The buoys operating status and the data validity indicate that it is an effective means to observe Arctic sea ice environment by deploying this kind of ice buoy.
Research on Groundwater Pollution with Contour Line Realization Methods Based on Monitoring Data by COMGIS
Authors: Jing Ping
Published: March 2014

Groundwater pollutions visualization can be come true by interpolation with monitoring data, which is very helpful to know the situation of regional pollution. In this paper, the spatial database is constructed by GIS software, it is used to manage the monitoring data dynamically, adopting the component GIS, the monitoring data can be easily loaded into the developing environment, by the contour and contour line method, the contour line of groundwater pollutants can be acquired, which is very important to visualize the regional pollution situation.
Contaminant Trasportation of Cd2+ in the Cushion System of the Municipal Waste Landfill
Authors: Fan Jing Jing
Published: March 2014

The cushion systems with low leakage performance are usually utilized in the municipal solid waste landfills to prevent the contaminants of the leachate from polluting the groundwater and soil beneath the landfill. Even there are the rigorous demands in related specifications in China and other countries all over the world for the design of the cushion system in the landfill. Pollution of the groundwater and the soil beneath the landfill still occurred in a large number of rubbish landfills because of the seepage. To investigate the seepage rate of the Cd2+ in the cushion systems, the minimum requirements for the design of the cushion systems are summarized according to the provisions of China and US. Comparative studies using 1-dimensional migration model are performed to investigate the seepage performance of the cushion systems consisting of geomembrance (GM) and compacted clay layer (CCL) sastifying the related minimum design demands. It could be concluded that the cushion system designed according to the minimum demands of China provide better anti-leakage performance, while that of US perform the lower. Finally, some advices for the releavent design standards are suggested according to the analyses.
Application of Titanium Metal Materials and Bone Tissue Engineering in Exercise-Induced Bone Injury Repair
Authors: Zhao Meng
Published: March 2014

Find a good biological characteristic of repair material of bone tissue engineering has been a hot research in the Department of orthopedics. Although there are various kinds of bone repair materials and methods, but no one can perfectly replace the human bone. Especially in the sports competition fierce, sports injury is one of the most common damages. Repair the damage of the traditional method of bone often because of their poor biocompatibility, lack of materials, not with the individual growth and other problems. It greatly reduced the effects of restoration. And titanium mesh and bone graft has the advantages of simple operation, low rejection, shapeable, implantation can close bone combined with host bone formation, and have fixed a support function, bone defect repair and can obtain satisfactory.
Applied Information Technology and Electronic Materials in Interpretation
Authors: Tian Xian Zhi
Published: March 2014

In the new ages of application of applied technology and teaching form in every universities, many different modes have been tried and some roles can be seen clearly during the course. Learning efficiency and interpretation efficiency can also be seen during this course,and the author has studied information-applied technology and electronic materials for autonomous leaning of autonomous learners. Applied information technology is very necessary in this course for the urgent need for its developments. At the same time, the proper application of electronic materials is also analyzed, the author finds out that electronic materials have their own special classification and special characteristics. It is the special characteristics that make the electronic materials play more important roles in interpretation.
Applied-Information Technology and Electronic Material in Construction and Research on the Web Citations Accessibility
Authors: Deng Xi , Zheng Zhong , Han Shu Guang , Shen Xiang Xing
Published: March 2014

The development of Applied-information Technology and Internet make the access of information resources more convenient and quicker, but the inaccessibility of web citations becomes a prominent problem. Researches about the web citations inaccessibility at home and abroad mostly focused on the phenomenon and principle of the accessibility, however, the solutions to the accessibility problem had not been studied so much, and the relevant application systems were even less. The construction of journal web citation accessibility system platform should emphasize solutions to the “variability” of the location and content of information resources. This platform may include the retrieval modules of current and archive issues so as to realize the maximum retrieval and present of web citations.
Applied-Information Technology in Supply Chain Knowledge Collaborative Model Based on Semantic Web Service
Authors: Yang Xiao Bo
Published: March 2014

In order to improve applied-information technology in supply chain collaborative system, it proposes a method of supply chain knowledge collaboration based on semantic Web service. Specific research process is as follows. Firstly, the Web knowledge service ontology based on OWL-S supply chain is introduced, and then analyzed the semantic Web service in the supply chain, three different type models of supply chain knowledge collaboration are also proposed from the standpoint of knowledge system construction, finally, the system structure of supply chain knowledge collaboration based on ontology is designed. The results show that using the model paper mentioned can improve the overall system performance of applied-information technology efficiently.
A Conductivity Model for Inequigranular Sandstones Based on Material Properties with Pore Geometric Conduction Theory and Effective Medium Conduction Theory
Authors: Tang Xiao Min , Wang Tuan , Song Yan Jie , Ren Yi Ling
Published: March 2014

The characteristics of inequigranular sandstone reservoirs in S3 Formation in Lei 64 Area are strong heterogeneity, complex pore structures and shale-bearing, therefore accurate calculation of water saturation becomes focus and difficult in calculation of oil reserves of inequigranular sandstone reservoirs. Based on the pore geometric conduction theory and effective medium conduction theory, a conductivity model for inequigranular sandstone reservoirs is established in this paper. In this model, the pore geometric conduction theory is used to describe the influence of pore structures on sand conductivity, the effective medium conduction theory is used to describe the influence of shale on sand conductivity. The two kinds of theory are combined through conductivity of equivalent pore fluid. Then, the log data of Lei xxx are processed with the model, and the results are compared with well test results. The results show that the new model can be applied in saturation evaluation of inequigranular sandstone reservoirs in Lei 64.
Research on a Surface Shot Peeling Process for Increasing the Anti-Oxidation Property of Super304H Steel in High-Temperature Steam
Authors: Li Yan Hui , Wang Shu Zhong , Sun Pan Pan , Li Xue Dong
Published: March 2014

At present, the superheater and reheater pipes in supercritical and ultra-supercritical boilers have encountered with widespread problems of high temperature steam oxidation, seriously affecting the operation safety and economy of the power generation unit. After several tests and contrastive analysis on the main chemical composition and microstructure of specimens before and after shot peening treatment, this paper developed a set of detailed surface shot peening process with specific process parameters, and finds that for the Super304H oxide film, the relative content of Cr element increases by shot peening treatment, with the relative Cr content of the treated specimen being 2.65% higher than that of the untreated, displaying that the anti-oxidation properties of high chromium austenitic steels in high temperature steam is effectively increased.
The Kinematics Model and Simulation of a Subminiature Based on Marine Ranching
Authors: Shao Jie Jiang , Wei Feng Peng , Zhen Lan
Published: March 2014

A subminiature submersible has been designed on the basis of the condition of the marine ranching, especially the shape of the submersible in view of the complex environment of marine ranching. Its mainly designed from three major movements, namely advance, ups-downs and yawing movement; it can complete three degrees of freedom movement. At the same time a force analysishas beengiven. Thetransfer functions have been deduced, and the simulation structure has been designed according to its kinematics model. According to the simulation results, the feasibility of the kinematics model was verified.
A Research on Quality Risk Controlling Principles and Methods in Automotive Products' Design Based on the Quality Gates
Authors: Li Zhi Qiang
Published: March 2014

Quality is the lifeline of business, and the key point of products quality is the product design quality. In recent years, the quality problems of car products have lingered on, and the large part is brought by the risk of product design quality. Beginning with quality gates, which is a world leading product quality management mode, this article is emphasized on the design quality risk controls principles and methods of car products.
Assessment of Risks in Automobile Remanufacturing
Authors: Wen Tian Qi , Liu Jia
Published: March 2014

With the advent of recycling economy era, the automobile remanufacturing industry has aroused wide concern of the society. This paper first proposes a risk map in automobile remanufacturing, including technology risks, market risks, management risks, cost risks, parts supply risks and life cycle synchronization risks. Then, it designs an assessment indicator system of risks in automobile remanufacturing and uses AHP approach to establish a model to assess risks in automobile remanufacturing. Finally, the paper calculation example and proves its correctness and practicality in the empirical analysis section.
Die Design and Numerical Simulation for the Die Forging Forming of Shifting Fork
Authors: Yu Hao , Jung Dong Won , Kim Dong Hong
Published: March 2014

At present, the domestic most use the traditional machining methods of production, such as general milling, drill, ground, etc. But the traditional processing method is low material utilization ratio, time-consuming power consumption, and low production efficiency. as the same time the product quality is difficult to meet the requirement of high strength. In contrast, shifting fork forming die forging can improve labor productivity, and can obtain the ideal parts surface roughness and size accuracy. And with the forming of die forging the variable speed fork general rarely cutting processing, just in require special high points will has fine grinding. This design has completed the variable speed fork of die forging shape of mold design giving the design plan and design process. This topic is about the design of the numerical simulation, getting the expected of the press one.
Systematic Simulation Method for the Calculation of Maximum Deflections in Peripheral Milling of Thin-Walled Workpieces with Flexible Iterative Algorithms
Authors: Kang Yong Gang , Yang Guo Rong , Huang Jie , Zhu Jing Hang
Published: March 2014

Due to the deflection of tool and workpiece induced by cutting force, there is a high complexity associated with the prediction of surface form errors in the peripheral milling process of thin-walled workpieces. And the prediction of surface form errors induced by cutting deflection is the precondition for process optimization and error compensation. This paper proposes a systematic simulation procedure suitable for surface form errors prediction in peripheral milling of low rigid thin-walled workpiece. Some key algorithms with the judgment of contacts between the cutter and the workpiece, the flexible iterative algorithm as well as the tool/workpieces deflection prediction using FE model are developed and presented in detail. Comparisons of the form errors and cutting forces obtained numerically and experimentally confirm the validity of the proposed algorithms and simulation procedure.
Planning and Supervising Assembly Works Using Microsoft Project
Authors: Nae Ion , Ionescu Gabriela Cristina , Ionescu Octavian
Published: March 2014

The process of assembling is one of the most important steps of technological process of production, consisting in a logical succession of operations with the goal of grouping pieces in subassemblies, assemblies in aggregates and aggregates in product. This paper, presents a new method of analysis, planning and consequently obtaining a reliable tool for supervising technological process of assembling for an expandable slide valve.
Development of Virtual Repair Training System of Transmission
Authors: Zhou Jing Tao , Wang Huai Guang , Zhao Chun Feng
Published: March 2014

Aiming at the problem on complex structure and lack of effective training methods of the transmission developed a set of transmission interactive virtual maintenance training system. Used the software of Solidworks and 3D MAX to build a virtual prototype of the transmission, and then making simplification and rendering, by converting the coordinate system and the viewpoint to achieve the construction of virtual assembly environment. By controlling the node and the demolition path in EON, the virtual interactive simulation is achieved. Through collision the detection and path settings, the virtual interactive roaming is achieved. Determined the scoring rules, scoring criteria, assessment standards and other key technologies, achieved four functions of demonstration, learning, training and assessment. It has a great practical significance to improve the training effect, effectively solved the high cost of training, teaching efficiency and other issues.
A Novel Coordination and Control Approach for Manufacturing System
Authors: Song Zhao Jun
Published: March 2014

In order to handle dynamic and complex manufacturing environment, a novel coordination and control approachis proposed and applied to manufacturing control system in this paper. Using an implicit coordination approach, a novel coordination approach ,which is inspired by the hormone regulatory principle, can find efficient routing paths among the manufacturing resources automatically. With using the proposed implicit coordination approach, the manufacturing control system could reduce the amount of the control communication, and raise the sensitivity of the controller in the shop floor control system. Finally, a simulation experiment, using the proposed approach, is test. And the result confirms that the novel implicit coordination approach has excellent control performance in a static environment and good adaptability to disturbances in shop floor.
Hybrid Method of Dynamograms Wavelet Analysis for Oil-Production Equipment State Identification
Authors: Korovin Iakov S. , Khisamutdinov M.V.
Published: March 2014

In the paper we considered a hybrid method of dynamograms wavelet analysis, applied for oil-production equipment work mode identification. Neural network architecture for sucker-rod deep-well pump units malfunctions detection is proposed. The architecture of intellectual data recognition system applied for pump installation control is presented.
High Capacity and Power Efficient PON Combining ACO-OFDM and WDM Technologies
Authors: Guo Kai , Zhang Yun Jia , Luo Dan , Liu Zhuo
Published: March 2014

An upstream transmission scheme of asymmetric clipping optical orthogonal frequency division multiplexing (ACO-OFDM) based WDMA-PON is proposed. Performance of 10Gbit/s/ONU upstream ACO-OFDM signal is analyzed. The scheme is high capacity and power efficient.
Analysis Methods of QC Group Activity
Authors: Meng Fan Jun , Liu Li Hong , Zhang Yun He , He Fei , He Yi , Gao Jun , Yu Ying , Chao Hui Jun
Published: March 2014

This article analysis QC group activity common method, including permutation diagram, causality diagram, countermeasure table, and discussion methods---brainstorming method. It grasp the design process and the actual value, point out the direction and laid a solid foundation for work of QC group activities in the enterprise effectively. It also create broad platform for innovation of enterprise product quality and increase of team cohesion.
Simulation of the Queue Network Optimization Based on Four Stages Waterage
Authors: Qian Run Hua , Cong Hua , Zhang Xiang Bo
Published: March 2014

According to the problem of the island waterage, this paper defines the four stages queue service network, and proposes 3 indexes to evaluate its effectiveness based on the transportation analysis. Secondly, it simulates the matching of the shipping and the berth based on the ExtendSim Tool. Finally, it gives the configuration parameters of shipping and berth in island waterage queue network for a certain time and material quantity based on simulation parameters and evaluation indexes.
Dynamic Optimization Production Model in the Multi-Stage of Make to Order Production Strategy
Authors: Huang Kuo Chung , Wu Chia Pin
Published: March 2014

A mathematical model is developed and presented to solve the optimal control problem in matching multi-stages production plan at any point in time. The main purpose of this paper is to investigate the optimal choice between production rate which may affect the inventory level and the optimal production plan at each time through different strategies so as to achieve due date. This method provides a way for decision makers to attend to the best production starting point for any given time point while operating within the best production function. Specifically in deciding whether a manufacturer needs to produce extra quantities for the next batch. Dynamic programming is also shown to be a practical method for the multi-stage optimization involved.