bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of Second Particals on Grain Boundary Sliding
Authors: Zhang Jian Qiang , Zhang Jun , Zhu Guo Sen , Zheng Yan Jun , Li Shao Wei , Wang Feng Hui
Published: July 2014

The effect of second particles on the grain boundary deformation in 304 type austenitic stainless steel was studied. Flat tensile samples with marker scratches on the surface were strained at slow rate at intermediate temperatures (300-500 °C) at ambient pressure. It seems that the sensitized material decreased creep rate and needed more stress to generate deformation of grain boundary, suggesting Cr carbides decreased the grain boundary sliding. Thus, the resistance to SCC crack propagation could be improved. The Charpy tests suggested that sensitized material had lower fracture toughness; this was due to the GB carbides that acted as nucleation sites for brittle fracture. Characterizations of the tensile samples were carried out using a secondary electron microscope in order to understand whether second phases can affect the creep behavior and grain boundary sliding.
Analytical Study of Cylindrical P-Wave Propagation across Jointed Rock Masses
Authors: Chai Shao Bo , Li Jian Chun , Li Hai Bo , Liu Ya Qun
Published: July 2014

According to the displacement discontinuity method and the conservation of momentum at the wave fronts, analysis for cylindrical P-wave propagation across a linear elastic rock joint is carried out. Considering the energy variation for wave propagation in one medium, the wave propagation equation was derived and expressed in an iterative form. The transmission and reflection coefficients are then obtained from the equation. By verification, the results agree very well with those from the existing results.
The Defect Diagnosis of Sheet Drawing on Self-Associate with Memory of Boltzmann Network
Authors: Liu Zhan Jun
Published: July 2014

The defect symptoms-reason of test sheet drawing is concluded. Using self-associate with memory of Boltzmann network and mix data merge does the intelligence diagnosis to the defect of test sheet-drawing , which is integrated with data , characteristic, decision grate and nerve network . A model of self-associate with memory of Boltzmann network is constructed. In order to reduce no confirm of defect analysis , the excellent diagnosis way is studied with the information of many sources fill . The result of actual number diagnosis and believing degree is given.
Development of a Powertrain Real-Time Model Based on the Assembly Characteristic
Authors: Xu Liang , Wang Di , Guo Rui , Guan Hsin
Published: July 2014

With consideration of changing in the powertrain degree of freedom at the actual conditions in all possible conditions, the automotive powertrain system is divided into four phases with application of the finite state machine phase concepts. The torque converter lockup clutch friction state judgment method is given, and the degree of freedom of each phase with the changing of system is analyzed. The powertrain system real-time model and integrated virtual test environment considering the dynamic response of shifting are built. Simulation test is conducted and compared with the CarSim vehicle model. The simulation results show that this model meet the modeling accuracy requirements, and the use of virtual experiment platform can effectively reduce the time and cost of validation testing.
Energy Consumption Analysis of Pulverizing System in Coal-Fired Power Plant
Authors: Li Ji , Wei Jun
Published: July 2014

Pulverizing system is the main energy-consumption equipment in coal-fired power plant, so it is of great significance to study energy-saving and optimization of pulverizing system. This paper first analyzes the situation and condition of pulverizing system in large-scale coal-fired power plant in China. According to analysis, coal mill and primary-air fan are the two main energy consumption facilities. Then their energy consumption characteristics, including power consumption and unit power consumption are studied. Subsequently, the energy-saving operation proposal for the pulverizing system is proposed.
Fuzzy PID Control of the Integrated System of Electromagnetic Brake and Friction Brake of Car
Authors: Zhao Qiang , He Ren , Hu Dong Hai
Published: July 2014

The integrated system of electromagnetic brake and frictional brake of car can improve braking performance effectively. Reasonable control strategy is the key of the integrated brake system. In this paper, it is analyzed and compared to the fuzzy control, PID control and fuzzy PID control. Based on that, fuzzy PID control is used to control the amount of current flowing in the electromagnetic brake coil by considering the nonlinear and time-varying of the integrated system of electromagnetic brake and frictional brake of car. The vehicle slip ratio deviation and rate of the slip rate deviation are used as the input. The electromagnetic brake coil current is used as the output. Thus, the fuzzy PID controller of the system is designed. A car equipped with the integrated system of electromagnetic and frictional brake is taken as an example. Matlab/Simulink software is utilized to carry out simulation analysis of the system. It is analyzed and compared the simulation output current curves of three control methods, braking time and braking distance. The simulation result shows that the integrated brake system using fuzzy PID strategy can effectively reduce braking time and shorten braking distance.
Research on Pump-Controlled Servo Hydraulic Press and its Energy Consumption Experiments
Authors: Zheng Hong Bo , Sun You Song
Published: July 2014

A solution was proposed to reform the traditional hydraulic presses by the technology of pump-controlled servo hydraulic power: PMSM(Permanent magnet synchronous servo motor ) and fixed displacement pump replaced the traditional inductive motor and fixed displacement pump as the power unit ; the electromagnetic reversing system, the rapid cylinder and the prefill system were kept; displacement sensors, pressure sensors and a proportional relief valve were added to the hydraulic system. A deep drawing process was taken as an example to analyze the energy consumption by experiments. The results indicated that in the same conditions the pump-controlled servo hydraulic press reached more than 20% energy saving effect in comparison with the traditional hydraulic press and had higher power factor. The main reasons for energy saving are the PMSM has higher efficiency and power factor, and the overflow loss, the standby loss are decreased.
The Prediction of the Maintainability of Armored Vehicle Engine Based on Failure Model Effectiveness Analysis
Authors: Zhu Lian Jun , Cong Hua
Published: July 2014

Maintainability is an important factor need to be considered in the strategy making process of armored vehicle engine. Combined with the factors analysis of the maintainability, fuzzy analytic hierarchy process (FAHP) is used to realize the reasonable evaluation of the engine maintainability based on failure model effectiveness analysis (FMEA) and the characteristic parameter test. The research provides a basis for the condition based maintenance of armored vehicle engine.
The State Assessment of Armored Vehicle Engine Based on Analytic Hierarchy Process and Fuzzy Synthetic Evaluation
Authors: Zhu Lian Jun , Cong Hua
Published: July 2014

The maintenance way of armored vehicle engine is hard time maintenance and breakdown maintenance in our army. So, the situation of lack or excess of maintenance is often existing in armored vehicle engine, and leading to potential safety hazard and wasting of resources. Condition based maintenance, which based on advanced detect and diagnosis technology, is a good way to solve the problems mentioned above. So, parameter tables which can completely reflect the state of armored vehicle engine is set up in this paper, and analytic hierarchy process and fuzzy synthetic evaluation method is used to scientific assess the state of vehicle engine. The computational process is demonstrated by analysis the experiment data of an armored vehicle engine. The work gives the foundation for condition based maintenance of armored vehicle engine.
Preventive Maintenance Optimization of Availability for NC Machine
Authors: Lei Gang , Deng Chao , Sheng Bo
Published: July 2014

This paper addresses the problem of preventive maintenance optimization for NC machine tool. Firstly, the NC machine tool is divided into four subsystems according to the function module. The failure probability density function of each subsystem is estimated with the fault information records. Then, the optimal preventive maintenance period is estimated for each subsystem considering the availability. The optimal periods of all the subsystems are used to derive the preventive maintenance strategy of the whole machine. Finally, a numerical case is presented and the result shows the performance of the proposed approach.Keywords: NC machine tool, subsystem, availability, preventive maintenance
A Novel Approach for Ontological Representation of Analytic Hierarchy Process
Authors: Liao Yong Xin , Rocha Loures Eduardo , Canciglieri Osíris , Panetto Hervé
Published: July 2014

The Analytic Hierarchy Process (AHP) is one of the widely accepted and frequently used priority assessment methods. A number of studies, which employed the AHP method, have already been carried out in different domains to support their multi-criteria decision-making definitions and applications. However, few researchers have paid attentions to extract and represent the important concepts and their relationships from the AHP method itself. The aim of this study is firstly to propose a way for representing the AHP method as an AHP Ontology together with a set of reasoning rules. Then, a prototype assessment tool is developed to show the possibility of obtaining more flexibility and reusability of this ontological representation.
Collaborative Decision of Production Plan and Pricing in Cogeneration System Supply Chain: A Literature Review and Future Research Ideas
Authors: Yu Hai Jie , Su Sheng
Published: July 2014

We summarized corresponding literatures of collaborative decision of pricing and scheduling from coarse-grained and fine-grained views, then we found that collaborative decision of pricing and production scheduling can increase more than 30% of the total profits. Main ideas and research frame of the problem are proposed.
Study on Characterization and Preparetion of Bismuth Tungstate
Authors: Sheng Jian Guo , Shan Yu Di
Published: July 2014

With the solvent of ethylene glycol, it is synthetized the bismuth tungstate(BWO) catalyst with controllable morphology. By using X ray powder diffraction(XRD) and the scanning electron microscope(SEM and TEM), the products are characterized. It is found that glycerol content can affect the morphology and structure of bismuth tungstate. The result is as follows: BWO is amorphous powder, and in front of the high temperature, it is a roasting scheelite layered structure, for nano single crystal phase. After high temperature roasting, it is changed into amorphous powder, and reunion. The oxidation mechanism of BWO is that the hole conduction band position of BWO is low, the surface hydroxyl, less after inspired by ultraviolet light can effectively reduce the concentration of organic matter.
Study on Awareness and Willingness to Bear Cost for Introduction of Renewable Energy in the Household Sector (in Korea)
Authors: Won An Na , Hong Won Hwa
Published: July 2014

With heightening of awareness on global warming and rationalization of energy use, there is an increasing attention in the household sector about introduction of renewable energy. In terms of policy, distribution plans for 30,000 photovoltaic houses and one million green homes are underway, Studies on awareness of innovators are required to increase supply of renewable energy in the household sector. Accordingly in this study, a survey was conducted for the purpose of examining awareness and willingness to bear cost for introduction of renewable energy, focusing on photovoltaic power, wind power and fuel cells. The results are as follows.
Development of Transmission Line Condition-Based Maintenance System Based on Expert System
Authors: Liu Yao Jun , Ji Shi Zhong , Chen Hua Pu
Published: July 2014

At the moment preventive maintenance is the main approach in maintaining power transmitting lines. While along with the improvement of equipment and management, the drawbacks of preventive maintenance appear more and more prominent. In the file the function and the structure of the system of status maintenance for power transmitting lines based on expert system is presented.
Production Decisions in Remanufacturing with Uncertain Return and Demand
Authors: Zhang Fuan , Hu Kong Fa
Published: July 2014

In this paper we analyze a reverse supply chain system that satisfies the market demand with remanufactured products. Demand is assumed to be random and the expected return is to be price-dependent. A firm needs to make recovery and production decision in the face of this uncertainty. We analyze both centralized and decentralized models to determine the optimal acquisition price and the optimal production quantities of remanufactured product for the firm. We also coordinate the decentralized systems with a two-part tariff contract and determine the optimal contract parameters. Finally, we present our numerical analyses to observe the effect of cost parameters on the system performance.
Reducing Bubble Defect on the Outsole Production Process in the Footwear Manufacturing Industry
Authors: Watcharaphassakorn Methinee , Yarlagadda Prasad K.D.V.
Published: July 2014

The purpose of this study is to discover the significant factors causing the bubble defect on the outsoles manufactured by the Case Company. The bubble defect occurs approximately 1.5 per cent of the time or in 36 pairs per day. To understand this problem, experimental studies are undertaken to identify various factors such as injector temperature, mould temperature; that affects the production of waste. The work presented in this paper comprises a review of the relevant literature on the Six Sigma DMAIC improvement process, quality control tools, and the design of the experiments. After the experimentation following the Six Sigma process, the results showed that the defect occurred in approximately 0.5 per cent of the products or in 12 pairs per day; this decreased the production cost from 6,120 AUD per month to 2,040 AUD per month. This research aimed to reduce the amount of waste in men’s flat outsoles. Hence, the outcome of research presented in this paper should be used as a guide for applying the appropriate process for each type of outsole.
Effect of Natural Clarifying Agents ZTC1+1 II on Purification of Angelica Polysaccharides
Authors: Li Chun Lei , Men Yun , Yang Lin , Yang Ai Mei , Shang Qi
Published: July 2014

Apply the univariate and orthogonal experiments, the purity of polysaccharide as index, to optimize the best purification conditions of natural clarifying agents ZTC1+1IIon Angelica polysaccharides. To determine the optimal temperature, the amount of clarifying agent, the concentration of the extracting solution ofAngelica, flocculation time, to select stable and feasible polysaccharide purification process.
Preparation and In Vitro Release Behaviors of Paclitaxel-Loaded Pluronic F87/Poly(Lactic Acid) Nanoparticle
Authors: Li Zi Ling , Huang You Sheng , Xiong Xiang Yuan , Gong Yan Chun , Li Yu Ping
Published: July 2014

Pluronic F87/Poly (lactic acid) block copolymer (PLA-F87-PLA) was synthesized by bulk polymerization. Paclitaxel-loaded PLA-F87-PLA nanoparcticles were prepared by a dialysis method. The loading efficiency was determined by UV. The results showed that the loading efficiency of paclitaxel for PLA-F87-PLA nanoparticles was 69%. In vitro release behavior of paclitaxel-loaded PLA-F87-PLA nanoparticles was studied by HPLC. In vitro release behavior showed an initial rapid release followed by a slow release. The biocompatibility of nanoparticles was measured by MTT. The viability of paclitaxel-loaded PLA-F87-PLA nanoparticles was less than that of free paclitaxel. The results indicated that PLA-F87-PLA copolymer has good biocompatibility.
Optimum Process for Extraction of Total Flavonoids from Castor Leaves by Orthogonal Test
Authors: Jiang Yi Hua , Jiang Xin Long , Cai Cheng Gang
Published: July 2014

Optimization of total flavonoid extraction from Castor leaves using orthogonal test methodology with the factors of ethanol concentration, extraction temperature,extraction time,solid/liquid ratio on the yield of total flavonoids were investigated.The results showed that optimum extracting conditions of total flavonoids from castor leaves were as follows: adding 1:40 g·mL-1 of 30% alcohol and extracting for 30 min,extraction temperature 70°C. Under the optimal conditions, the maximal yield of flavonoids was of 1.81%.
Effect of Crude Polysaccharides from Discorea bulbifera L. on the Liver in the Mice Bearing U14 Cervical Carcinoma
Authors: Cui Hong Xia
Published: July 2014

To explore the effect of crude polysaccharides of Dioscorea bulbifera L. (DBLP) on liver organs in mice bearing cervical cancer, the effects of DBLP on the liver weight in vivo, sections of liver were examined. Glutamate pyruvate transaminase (GPT) and Glutamic oxalo acetic Transaminase (GOT) activites of blood serum in tumor-bearing mice were detected by the colorimetric method. Superoxide dismutase (SOD) and Glutathione reductase (GR) of hepatic tissues were also determined by means of colorimetric method. Our results showed that the liver index, GPT and GOT activities of blood serum, SOD and GR activities of hepatic tissues of DBLP groups were almost the same as that of negative groups. however, the liver index, GPT and GOT activities of blood serum were decreased in DBLP groups compared to CTX groups. And the SOD and GR activities of hepatic tissues of DBLP groups were higher than that of CTX groups. These results demonstrated that DBLP had no effect on liver organs in mice bearing cervical cancer. These data would be a foundation for the appication of DBLP in antitumor, which indicated that DBLP would be a potential antitumor drug. And the further studies, such as antioxidant, should be developed.
Analysis of Paclitaxel in Pharmaceutical Injection by Ultra Performance Convergence Chromatography
Authors: Gong Xiao , Huang Xiao Bing , Wei Yong Hua , Qi Ning Li , Lin Li Jing , Liu Yang Yang
Published: July 2014

A simple and sensitive ultra-performance convergence chromatography system coupled with a diode array detector for analysis of paclitaxel, 10-deacetyl-7-epipaclitaxel and cephalomannine in paclitaxel injection was developed. The analyses were carried out on a Waters Acquity UPC2 BEH 2-EP using the mobile phase of mixture of supercritical CO2 and methanol with a linear gradient elution from 92:8 to 82:18 at 50 °C. The method offers good linearity, higher resolution, and good repeatability. LOD and LOQ were 0.45 and 1.32 ng, respectively.
Study on the Genotoxicity of Organic Extracts of the Water from a Reservoir by Using Comet Assay
Authors: Wang Juan Ting , Yu Yan Zhen , Li Xuan
Published: July 2014

In the experiment, a systematic study on the genotoxicity of organic extracts of the water in a reservoir at wet season and dry season. And the study was done by using comet assay. The study was to appraise the waters qualities after every treatment step from the view of the DNA damages on the mouse spleen lymphocytes. The results of the experiment can provide reliable basis for adjusting the treatment reasonably to purify raw water of different qualities.
Interactive Medical Image Segmentation Method with only Positive Label Examples
Authors: Zhang Chen Guang , Zhang Yan , Zhang Xia Huan
Published: July 2014

In this paper, a novel interactive medical image segmentation method called SMOPL is proposed. This method only needs marking some pixels on foreground region for segmentation. To do this, SMOPL characterize the inherent correlations among foreground and background pixels as Hilbert-Schmidt independence. By maximizing the independence and minimizing the smoothness of labels on instance neighbor graph simultaneously, SMOPL gets the sufficiently smooth confidences of both positive and negative classes in absence of negative training examples. Then a image segmentation can be obtained by assigning each pixel to the label for which the greatest confidence is calculated. Experiments on real-world medical images show that SMOPL is robust to get a high-quality segmentation with only positive label examples.
The Influence of Perceptual Load on Inhibition of Return
Authors: Liu Xing Juan , Fan Zhi Hao , Zhou Jian Zhong
Published: July 2014

Inhibition of return (IOR) refers to a slower response to a target which appears at a previously attended location. We investigated whether perceptual load effects onset time of IOR in detection tasks. The results showed that the onset time of IOR was complex in different level of perceptual load. IOR effect was significant when perceptual load was low at 350ms, but the facilitation effect was significant at 850ms and 1350ms when perceptual load was high. The results indicated the onset time of IOR was influenced by perceptual load, indicating that perceptual load hinder the spatiotemporal correspondence between the cue and target integration.
Design and Evaluation of the Primers for Rift Valley Fever (RVF) Virus RT-PCR Detection
Authors: Yang Ze Xiao , Wang Bo , Xu Qiu Mei , Yao Xue Ping , Zhu Ling , Xu Zhi Wen , Wang Kai Yu , Li Gui Li , Peng Shan Zhen , Wang Yin
Published: July 2014

Rift Valley Fever (RVF) is a notifiable multiple species diseases in the OIE list, and causes human and agricultural losses in endemic regions. To develop the rapid method for detecting of RVF, 2 specific primers for reverse transcriptase polymerase chain reaction (RT-PCR) and 7 overlapping oligo primers were designed according to the nucleotide sequence information of RVFV published in GenBank, and a DNA fragment about 318 bp of the segment S was synthesized in vitro by overlap extension PCR to construct the recombinant plasmid pMD19-T-RVFVS. Then, the 2 specific primers were evaluated via a serial of tests, including reaction temperature optimization test, sensitivity and specificity tests. The results showed that the 2 designed primers are suitable for RVFV RT-PCR detection which is a rapid method with good specificity and sensitivity, the detection limit was approximately 85 copies of the cloned viral genomic fragments (pMD19-T-RVFVS) as well as resulted in no cross-reaction for peste des petits ruminants virus (PPRV), Epidemic encephalitis B virus, E.coli , Salmonella and Pasteurella multocida etc common pathogens isolated from ruminants detection.
Detection on the Pulse Signal of Human Body Based on Piezoelectric Impedance Technique
Authors: Zhang Jun , Guo Bang Zeng , Tang Hong Mei
Published: July 2014

Pulse wave is one of important physiological characters of human body. Detection on pulse sign is helpful for health care and treatment of disease. In order to detect the change of pulse signal of human body, the work principle of detection based on the piezoelectric impedance technique was presented and a new piezoelectric impedance sensor was designed. With an experiment platform set up, detection experiments of pulse signal were created. Two methods were used to deal with the experimental data. Results from a series of experiments intuitively show that with pressure applied to human body bigger and bigger, the pressure index increases gradually. It illustrates that the change of pulse signal is bigger and bigger. The result indicates that this method has good sensitivity and provides a new detection method. The experiment shows that the piezoelectric impedance technique is feasible to detect the change of pulse sign.
Accurate Calculation Receiving Power of the Electromagnetic Wave Scattering between Two Stations on Sea Surface
Authors: Li Xian Mao , Dong Tian Lin , Huang Gao Ming
Published: July 2014

This paper studies receiving power of electromagnetic wave scattering on sea surface transmitted by directional antenna. Analyzes different overlapping conditions of transmitter beaming and receiver beaming on the sea surface, deduces the calculation formulae, and calculation of the receiving power of scattering wave in case of different across angle between radiator and receiver beams on sea surface. The result shows that the across angle is a important factor of receiver to receive electromagnetic wave scattering power on sea surface, and it gives an accurately calculating method by receiver to receive electromagnetic wave scattering power from sea surface. The method can apply to the condition that radar or jammer transmitters beam to sea surface and reconnaissance or radar receiving the scattering power from sea surface at another position, etc..
Application Research on Technique of Re-Entry Old Wells in Sulige Area
Authors: Xue Ya Fei , Zhu Zhi Ying , Li Da
Published: July 2014

To the gas field had been developed for a long term, the yield is hard to keep a high value. How to improve the daily production is a key problem. Fracturing again in old wells can be an effective method to solve the problem. In this paper, we introduce this technique. We choose well and layer firstly, and then decide a suitable fracturing measure. Finally, fracturing evaluation shows the method can improve the yield effectively. This experience can be popularized.
Measurement of Ultra Low Sulfur in IN718 by Using Infrared Absorption Method
Authors: Zalupski P.R. , Liu Feng Yan
Published: July 2014

The paper introduces an experimental process on measurement of ultra low sulfur in IN718 by using infrared carbon sulfur analyzer. The experimental data shows that, infrared absorption method can be used to analyze and measure the ultra low sulfur in IN718, and the precision and accuracy of this method meets the requirement of ASTM E l019-2000. It can be concluded that it is a feasible method in practice.
Unsteady Heat Transfer Analysis: Saving-Energy and the Regionalism Design on Air-Conditioning System for Car
Authors: Ouyang Li , Li Die
Published: July 2014

In this paper, based on unsteady heat transfer calculation method, the results of the heat transfer through the enclosure of car compartment are given, in order to analyze dynamic energy-saving effect of the regionalism design on air-conditioning system for car. The result demonstrates that the regionalism design on the air-conditioning system has important saving-energy effect.
A High-Order CMOS Bandgap Voltage Reference
Authors: Zhou Qian Neng , Li Yun Song , Lin Jin Zhao , Li Hong Juan , Li Chen , Pang Yu , Li Guo Quan , Cai Xue Mei , Li Qi
Published: July 2014

A high-order bandgap voltage reference (BGR) is designed by adopting a current which is proportional to absolute temperature T1.5. The high-order BGR is analyzed and simulated in SMIC 0.18μm CMOS process. Simulation results show that the designed high-order BGR achieves temperature coefficient of 2.54ppm/°C when temperature ranging from-55°C to 125°C. The high-order BGR at 10Hz, 100Hz, 1kHz, 10kHz and 100kHz achieves, respectively, the power supply rejection ratio of-64.01dB, -64.01dB, -64dB, -63.5dB and-53.2dB. When power supply voltage changes from 1.7V to 2.5V, the output voltage deviation of BGR is only 617.6μV.
Multistage Amplifier Using Dual-Miller with Nulling-Resistor and Dual-Feedforward Structure
Authors: Zhou Qian Neng , Li Qi , Lin Jin Zhao , Li Hong Juan , Li Chen , Pang Yu , Li Guo Quan , Cai Xue Mei , Li Yun Song
Published: July 2014

This paper designs a high-gain wide-bandwidth multistage amplifier by employing the dual-miller compensation with nulling-resistor and dual-feedforward compensation (DMCNR-DFC) in 0.35μm BCD process. The designed DMCNR-DFC multistage amplifier achieves well performance including gain-bandwidth product (GBW) and slew rate (SR). Simulation results show that the DMCNR-DFC multistage amplifier achieves a dc gain of about 121.1dB and GBW of about 6.1MHz with 52o phase margin.
Photovoltaic Inverter Output Current Research of Adaptive Active Harmonic Compensation Device
Authors: Chang Feng Jun , Ma Hong Quan , Cui Chang , Zhang Jing
Published: July 2014

With the continuous improvement of photovoltaic power generation technology, people has higher requirement on the performance of the photovoltaic inverter. Currently, PV Inverter Grid process of the home and abroad, because the inverter put DC power into AC power frequency electric use the inverter principle and PWM control technology inevitably produce harmonics problems at the sine wave inverter formed. According to this kind of harmonic interference problem, the adaptive in-place active harmonic compensation technology were proposed, this effectively suppress the harmonic pollution to power network, solved the PV inverter output harmonic and reactive power problems, effective purification of power grid, filled the domestic and foreign photovoltaic inverter without output current harmonic compensation gap.
Reliability Evaluation for Distribution System Including Protection System Failures
Authors: Zhang Zhan Long , Yao Li , Wang Qun
Published: July 2014

A new model and method for incorporating the effect of protection system failures into distribution system reliability evaluation are developed this paper. Firstly, the distribution system is partitioned into zones with the auto (or non-auto) switch being the boundary; through the network equivalent approach, for each load point, three component groups are respectively formed by two types of zone-elements. Then two types of protection failures and their impacts on reliability modeling are discussed. Finally, the reliability Markov model of load point with protection failures has been developed. The test results of the samples demonstrate the practicability and validness of the method.
Public Greenbelt Layout Optimization for Ecological Civilization City Construction
Authors: Chang Chun Guang , Qi Ming Hao , Li Wan , Yin Kai
Published: July 2014

For boosting public greenbelt (PG) construction level, hastening urban ecological civilization construction velocity, the optimization model and its algorithm for urban PG layout is studied. The layout optimization presupposition of urban PG is described. The bi-objective optimization model for urban PG layout is established. The optimization objectives consist of maximum consistency between PG distribution and population distribution, maximum PG area in certain region. In model constraints, budget capital investment sum for PG construction, distance tolerance threshold from each citizen’s habitation to nearest PG, sum of PG needed to be upgraded and reconstructed from grade two to grade one, minimum oxygen supply capacity from given greenbelt, maximum potential supply area of PG. Genetic algorithm (GA) is employed to solve above model, the main cycles of GA for above model are designed. Above greenbelt layout optimization model and its algorithm are validated.
Urban Ecological Environmental Quality Evaluation System Research
Authors: Li Xiu Xia
Published: July 2014

The paper extracts the urban ecological environmental quality evaluation index, based on hierarchical analysis model, the integrated use of "pressure-state-response" model, through the frequency statistics method, factor comparison method and expert evaluation method and so on to set up urban ecological environmental quality evaluation system in nearly a decade based on the related data of environment quality evaluation of Zhengzhou city. Results show that from 1998 to 1998, Zhengzhou ecological environmental quality rises year by year, the ecological environment on the basis of good for Zhengzhou city ecological security evaluation and management.
Eco-Environmental Construction in Zhengzhou
Authors: Li Xiu Xia
Published: July 2014

After a discussion of present problems of eco-environmental construction on municipal virescence , water environment and water ecology, and landscape as well as urban ecological system of quantity, quality and capacity in Zhengzhou, the causes of these problems are analyzed. Measures are put forward, such as knowing the meaning of municipal eco-environmental construction, increasing the environmental protect consciousness of managers and enhancing the municipal eco-systemic construction.
Study of Morphological Changes Induced by Man-Made Coastal Project
Authors: Xu Ting
Published: July 2014

With rapid development of economy, the crisis of land resources is faced. Land expansion by enclosing sea in estuaries has become an important carrier for city space extension. In this paper,the large-scale marine reclamation project in the Oujiang River Estuary (ORE) of Wenzhou shoal was taken as an example.Based on the intoduction of the study area,the 3D marine numerical model (EFDC) was setup and used for simulation of sediment enviroment and morphological changes induced by the reclamation. The results indicated that the project doesn’t have obvious adverse effects on its nearby sediment environment and seabed. On the contrary, it settles the problem of mouth bar of the ORE and provides some advantages to maintain and steady the deep water channel and improve the sail condition from the north mouth of Oujiang River to Huangda’ao channel.
Investigation on the Energy Efficiency of Innovative Hybrid Impact Hydroforming
Authors: Wang Shao Hua , Lang Li Hui , Lin Li Jing
Published: July 2014

The innovative hybrid impact hydroforming (IHF) technology use high energy forming complex parts in very short time which can improving forming quality of hardforming materials like Aluminum alloy widely used in automotive and aircraft industries. The impact hydroforming technology means the most features are formed by hydroforming and the small features are rapidly reshaped by high intensity impact energy in a very short time after the traditional hydroforming. Thus, the impact energy is the most important parameter of Innovative Hybrid Impact Hydroforming. Using numerical simulation software MSC.PATRAN/DYTRAN, the whole system of hybrid impact hydroforming apparatus was analyzed. The initial gas pressure and the mass of hammer directly affect the energy efficiency. The results show greater initial gas pressure will linear increase the energy output. Moreover, the bigger mass of hammer will reduce the velocity of hammer, but it still increase the energy output. Therefore, the research is very useful for improving energy efficiency of IHFand widing its application.
The Soil Enzyme Activities with Age of Tea in Three Gorges Reservoir Area
Authors: Zhang Li Ping , Jia Guo Mei , Xi Ying
Published: July 2014

Enzyme activities play key roles in the biochemical functioning of soils, including soil organic matter formation, degradation and nutrient cycling. Activities of invertase, urease, and catalase were analyzed at different age of tea garden. The results showed that urease activity only showed a significantly negative relationship with the age of tea, and a significant positive relationship with organic carbon. This indicated that soil urease acitivity could respond well to the change of soil organic carbon and is a more sensitive indicator of soil fertility than other enzyme activities. The study also found that the organic carbon was relatively low in 50yr site, compared with lower age of sites. This may be caused by the high activities of invertase and catalase per unit of organic carbon in the soil of tea which tends to help decompose and therefore decrease the organic carbon in soil
Accumulation of Chromium in Vetiveria zizanioides Assisted by Earthworm (Eisenia foelide) in Contaminated Soil
Authors: Zhang Ke , Chen Qiang , Luo Hong Bing , Li Xiao Ting
Published: July 2014

The trial of the earthworm-assisted phytoremediation of Cr in contaminated yellow soil was made to study the performance of earthworm in Cr accumulation of Vetiver Grass (vetiveria Zizanioides VG). Two groups were designed, adding earth worm (marked EM) and not adding earth worm (marked NEW).The result showed Vetiveria Zizanioides can absorb great amounts of chromium in soil, the decline rate of Cr was up to 75% and 78% respectively in EM and NEM at 60th day. Both root and shoot can accumulate Cr from soil. As the concentration of Cr gradually increased within 0-80mg/kg,the accumulation activity of two groups presented first increase and then decrease and reached maximum 644.31mg/kg, 943.14 mg/kg in root when the Cr concentration was 80 mg/kg. It began to decrease when the Cr concentration was above 120mg/kg.Vetiveria Zizanioides's accumulation ability differs in root and shoot. It presented root>shoot. With a comparative analysis, EM has higher accumulation and resistance of Cr at any designed treatments. In the analysis of relation between plants and soils, it was found that there was significant correlation in Cr contents between plants and soils (P<0.05). Furthermore, there was extremely significant correlation (P<0.01) between root and shoot in EM. There was a high retention rate of Vetiveria Zizanioides root to Cr. Retention rate of any treatments were all greater than 83% except 120mg/kg in EM. Plants kept much higher concentrations of Cr in roots than in their respective shoots. The biggest value was up to 96.23%. There was no obvious difference between EM and NEM in retention rate. Earthworm-assisted phytoremediation has high efficiency in Cr contaminated soil. It’s an idea method to Cr contaminated soil.
A Research of Environment Management Policy Based on the Externality Theory
Authors: Che Hui Chun , Cao Fang
Published: July 2014

In view of the environmental problems, the paper start with talking about the externality theory and polluter pays principle, and then introduce two kinds of environmental management policy, which are emission standard and Pigouvian Tax. By comparing them in the perspective of economic efficiency, we can learn that: Only the coordination of administrative means and economic measures, we can better solve the environmental problems.
Study on Identification Method of Fructus Lycii Origin by Mineral Elements
Authors: Pang Yan Ping , Liu Kun , Zhao Zhi Lei , Li Xiao Ting
Published: July 2014

In order to rapid discriminate the source of Fructus Lycii origin, Fructus Lycii from five different areas were collected, the content of K, Ca, Na, Mg, Fe, Zn ,Cu and Mn were analyzed with flame atomic absorption spectrometry,and the data was analyzed with Stepwise discriminant analysis method,and the discriminant function was established. The results showed that Fructus Lycii from five different areas was well clustering. The discriminant model was re-discriminated by using the method of mutual test; its discrimination accuracy was 94.4% for the original samples and the unknown samples. The recognition rates for Ningxia, Hebei, Qinghai cultivation regions were all 100%. In conclusion, mineral element combined with chemometrics method was a fast and accurate method to identify the origin source of Fructus Lycii.
Establishment of Models for Tight Sandstone Formation Evaluation in the Ordos Basin of Northwest China
Authors: Wei Xiao Lei , Li Jun , Xu Rui , Zhi Ling Ling
Published: July 2014

Porosity and permeability are two important input parameters in formation evaluation. However, It faces a great challenge for formation porosity and permeability estimation in tight sandstone reservoirs in the Ordos basin of northwest China due to the greater contribution of rock matrix and complicated pore structure. In this paper, based on the analysis of conventional log responses and 324 core samples drilled from the target formations in different wells, the estimation models of reservoir porosity and permeability are established, and the reliability of these models are verified by comparing the calculated porosity and permeability by using the established models with core analyzed results. The absolute errors between these two kinds of porosities are all lower than 0.64%, and the relative errors between them are lower than 7.1%, these are coincided with the requirement of reserve estimation.
Characteristics of Interlayers in Bauxite Deposit of WZD Area, Northern Guizhou, China
Authors: Cui Tao
Published: July 2014

Through systematically geologic survey and observation of hand specimen this paper have a comprehensive research on the characteristics of interlayers in bauxite deposit of Wuchuan-Zheng,an-Daozhen (WZD) area. There are two kinds of interlayers in WZD bauxite: black coaly interlayer and brown hematitic interlayer. Black coaly interlayer indicate reduce and inshore environment, brown hematitic interlayer represent oxidized and strong hydrodynamic environment. The appearance of interlayer with contrary feature indicate sedimentary environment of the WZD bauxite is very complex.
Research Progress of Bauxite in WZD Area, Northern Guizhou, China
Authors: Cui Tao
Published: July 2014

This paper has a comprehensive analysis on the bauxite in Wuchuan-Zheng, an-Daozhen (WZD) area, northern Guizhou, China through synthesize former research. The understanding of mineralogic, petrologic and geochemical characteristics is deep, and sedimentary environment, parent rock and mineralization process have been defined. Main questions need further research as follow: minerogenetic epoch; migration mechanism of elements; genesis of rare earth mineral.
Special Structure and its Geological Significances of WZD Bauxite
Authors: Cui Tao
Published: July 2014

Through systematically geologic survey and observation of drills and rock slices this paper have a comprehensive research on special structure of bauxite in Wuchuan-Zheng,an-Daozhen (WZD) area. Special structure mainly includes directional structure of clast, leaching structure and colloid structure. Clast is erratic boulder indicating high energy environment. Leaching structure shows there is an eluvial process in mineralizaton process, and leaching is important for the formation of high grade bauxite. Appearance of colloidal in WZD bauxite shows that agglutinate of gel is one of the reasons for the formation of WZD bauxite. Clastic structure, leaching structure and colloidal structure demonstrate that mineralizaton process of WZD bauxite is a very complicated process.
Studies on Broad-Sense Sample Method in Data Mining
Authors: Tang Yan
Published: July 2014

With the development of science and technology, people pay more and more attention to the reliability of the products, especially in some special field, such as aerospace, military products, and some products of high reliability and long life. As a part that runs through the whole life cycle of products, reliability test provides an important source of data for the design, batch production and residual life assessment of the product development. For some expensive, new products put into use, they are not quite little in amount, having the characteristics of small sample. In this case, how to use the existing data to predict product life, reliability of calculating the reliability of a product more accurately and other related parameters is particularly important.
Study on Carbon and Sulfur Detection by Using Infrared Absorption Method
Authors: Bayati M.R. , Wei Peng Yi
Published: July 2014

This paper focuses on discussing the principle of detecting carbon and sulphur by using infrared absorption method, characteristics of high-frequency heating, system blank value, and method for detecting trace carbon and sulphur.
Parameter Estimation for Wiener Systems with Preload Nonlinearities
Authors: Ni Yun Xia , Cao Jian Dong
Published: July 2014

This paper proposes a recursive least squares algorithm for Wiener systems. We use a switching function to turn the modelof the nonlinear Wiener systems into an identification model, then propose a recursive least squares identification algorithm toestimate all the unknown parameters of the systems. Finally, an example is provided to show the effectiveness of the proposed
algorithm.
Research on the Layout of Integrated Freight Hub Based on Two-Stage Model
Authors: Chen Yan Yi , Liu Tie Xin
Published: July 2014

Applying transportation planning theory and operations research method , this paper proposes the layout model of integrated freight hub with two-stage , which first builds a model to predict the attributes of integrated freight hub aiming for the optimization of regional freight transportation organization , and then works out the way to classify district integrated freight hub based on Hierarchical cluster. Eventually, take a specific example for empirical study.
The Optimization of Logistics and Distribution
Authors: Xiong Wei , Zhang Ling Yu
Published: July 2014

Distribution is an important function of enterprise logistics. Through efficient distribution activities, it can reduce the total cost of logistics enterprises and improve logistics efficiency and service levels. Therefore, the rationality of the logistics and distribution system design will directly affect the survival and development of enterprises. In this dissertation uses a retail business distribution network for the study, to study its distribution optimization models and methods, using a variety of algorithms for analysis, to understand its distribution network efficient mode of operation.
A Generalized Attributes Significance Measure Method
Authors: Li Fa Chao , Li Ming , Liu Shuo
Published: July 2014

Currently, rough set theory has been widely used in many fields. In rough set theory, how to measure the attributes significance of the data is a core content. In order to solve the problem that the existing attributes significance measure methods usually ignore the interaction among the attributes, the paper presents a measure method based on difference degree. When given a set, the proposed method first divides it into several subsets according to the value of condition attributes, and then computes the difference degree in the subsets. Secondly, the important attributes are selected based on the value of difference degree. Further the paper discussed some properties of the difference degree, and the experimental results shows the effectiveness of this method in the final.
The Data Mining Technology of Particle Swarm Optimization Algorithm in Earthquake Prediction
Authors: Zhang Xiao Yu , Li Xiang , Lin Xiao
Published: July 2014

Data mining technology based on the particle swarm optimization algorithm applied in earthquake prediction was presented. Making use of the characteristics of abnormally high-dimensional data of earthquake precursor, this paper studies an earthquake prediction model based on the Particle Swarm Optimization Clustering Algorithm. This model analyzes the relationship between earthquake precursor data and earthquake magnitude. Inputs are 14 abnormal indexes such as belt, seismic gap and short leveling, and output is earthquake magnitude classification. The cluster average-distance is set as the evaluation function of the Particle Swarm Optimization Algorithm. The experimental results indicate that, this model can effectively and validly predict the earthquake magnitude in accordance with the earthquake precursor data. Compared with the traditional clustering k-means Algorithm model, this stability is stronger, and the correctness of forecast is much higher. Through the research and analysis of the example of history source seismic data, the model of this paper is one of approaches to improve the efficiency of earthquake forecast.
An Improved Weighted Centroid Localization Algorithm Based on RSSI
Authors: Liu Chang Liang , Li Zhe
Published: July 2014

In wireless sensor networks, the precise positioning of unknown nodes is the precondition and security for all kinds of applications. In this paper, by analyzing the present research status of personnel positioning algorithm and on the basis of the study of traditional centroid algorithm, an improved based on RSSI (Received Signal Strength Indicator) of the weighted centroid localization algorithm is proposed. The algorithm takes the signal intensity meanwhile the distance between the unknown nodes and beacon nodes as a reference to correct RSSI value. Through the simulation of the localization algorithm it proves that the improved localization algorithm has higher precision than the traditional algorithm. Once the accidents can be timely and efficient rescue for the underground staff, better meet the actual demand of safety management.