bluuebunny/crossref_metadata_2025 huggingface dataset:
Intelligent Design of Environmental Performance Evaluation Using Fuzzy Expert System
Authors: Pusporini Pregiwati , Abhary Kazem , Luong Lee
Published: June 2013

Due to the increasing demand for environmentally friendly products and growing concern for green industry, environmental evaluation and environmental performance have become important measures of business and manufacturing industry. The main purpose of this evaluation is to evaluate, review, monitor and check environmental performance and compare it with its environmental performance criteria. The integration of quantitative and qualitative measurement is needed to facilitate the design of environmental performance evaluation. This research presents the design of environmental performance evaluation by using fuzzy expert system. Expert knowledge is acquired to develop the fuzzy rules. The proposed design is flexible enough to be modified and used with the different criteria.
Standard Business Process for Efficiency Improvement in Production Cells
Authors: Hanenkamp Nico
Published: June 2013

Since the early 1990s, the Toyota Production System (TPS) has been widely accepted in the rest of the industrial world. While there has been no doubt about the effectiveness of lean methods and tools on the shop floor, the introduction of standardized business processes for efficiency improvement represents still a major challenge for most companies. There is a need to develop highly reactive management processes aligning continuous improvement activities with subordinated business objectives. This article describes a pragmatic concept and the process steps as well as discussing results from its practical application. It has been primarily developed for the application in production cells incorporating various process steps, but it could also be applied in different organizational structures.
Risk Assessment of Ergonomic Risk Factors at Construction Sites
Authors: Torghabeh Zahra Jabbarani , Hosseinian Seyyed Shahab , Ressang Aziruddin
Published: June 2013

Construction as a complex industry challenges the protection of safety and health of workers who are exposed to many risk factors in construction sites. Exposure to these risk factors may develop Musculoskeletal Disorders (MSDs). The study is aimed at prioritizing Ergonomic Risk Factors (ERFs) in order of risk. To achieve the aim of this study, a questionnaire survey was distributed among respondents randomly selected from construction sites in Malaysia. The results of this study indicated that the most critical ERFs are Extreme hot temperature, Leaning forward/side, twisting the back and Organizational factors, while the least critical ERFs are Kneeling positions on hard surfaces, Holding tools with longitudinal ridges on handles tightly and Using hands or knees as a hammer. Identification of ERFs and their risk levels are the results of this study. Successful safety performance and management necessitate the investigation of ERFs and hazards regarding risk levels.
Accurate FEM of Steel-Concrete Composite Box Girder Bridge for Damage Identification Based on Dynamical Experimental Study
Authors: Xiang Yi Qiang , Liu Li Si , Li Shao Jun
Published: June 2013

Based on the results of experiment, this paper discusses about the updating and validation of accurate finite element model for damage identification of the steel-concrete composite box girder bridge. Taking a 5 meters long steel-concrete composite box girder bridge as the research object and the finite element model is established. By means of scale model test the updating of the accurate finite element model has been completed and validation is confirmed.
Effects of Carbon Trading on Operating Costs of the Civil Aviation Industry
Authors: Lu Li Teh , Yu Tai Yi , Chang Yu Jie , Lu Che Ri E
Published: June 2013

This study investigates carbon emission inventory from the local civil aviation industrys aircrafts, airport ground service vehicles and power consumption within an airport. With the existing data of five years, the operating costs probably added into civil aviation industrys operating costs are estimated and sensitivity of six variables are evaluated with Monde Carlo simulations herein to construct a basis for the policy of carbon trading. The dominant two factors contributing to variation in the cost of carbon trading per takeoff & landing at the Taoyuan Airport and the Taipei Airport are carbon price (71.1%) and number of takeoffs & landings (14.4%) as well as number of takeoffs & landings (38.7%) and carbon price (35.3%), respectively.
Comparison of Two Different Underfloor Ventilation Systems Using CFD
Authors: Renčko Tomáš , Sedláková Anna
Published: June 2013

Concepts of remedial treatments of historic buildings using ventilated floors, with a few exceptions, are with considerable popularity preferred by the representatives of monument protection. The fact that they require small interventions in the masonry is of great benefit for compliance with the methodology of cultural heritage protection, as is the fact that such interventions do not compromise the structural analysis of buildings. These concepts have gained great popularity also because they can be considered kind of a "return" to historical example. With these technologies we return to the methods and principles that the ancient Egyptians were already familiar with. The paradox is that these methods are used for many centuries, until today they are only proposed on the basis of empiricism. In this article two different underfloor ventilation systems are compared using CFD simulation.
Comparative Studies on Damage Detection Based on Dynamic Response of a Beam Subjecting to Moving Load
Authors: Zhang Wei Wei , Ma Hong Wei
Published: June 2013

In this paper, the feasibility and sensitivity of damage detection based on dynamic responses of a simply supported beam were examined theoretically and numerically, which were the displacement, velocity and acceleration histories at mid-span on a beam under the moving load. First, the theoretic background of a damage beam vibration subjecting to moving load was briefly described. And then a finite element method was used to calculate the responses of the beam. Using wavelet transform of the dynamic responses, the damage could be identified. Case studies showed that the velocity response was sensitive to the damage and the simulations illustrated the better quality of damage detection by velocity than the ones by displacement and acceleration.
Experimental Study on Detection of Local Damage of Concrete Beam End Based on EMI Technique
Authors: Yang Jing Wen , Zhu Hong Ping , Wang Dan Sheng , Yu Jing
Published: June 2013

Nondestructive detection evaluation technique which based on the electro-mechanical impedance (EMI) method is widely used for structure health monitoring (SHM). The arrangement of piezoelectric transducer (PZT) includes two types, surface-mounted and embedded. A lot of researches have been done about two kind of transducer based on EMI method, however the effect of two types on the same damage condition requires to be researched deeply. Therefore, the objective of this investigation is comparing the effect of two kind types of PZT in detecting local damage of concrete beam end. An experiment was set up to detect local damage of the beam by EMI method with both embedded and surface-mounted PZT. The experiment result shows that EMI method is available to detect local damage of concrete beam end. The surface-mounted PZT is more sensitive to local damage of concrete beam end, meanwhile surface-mounted PZT is more vulnerable to the environment and other factors.
Bending and Compression Properties of Malaysian Medium Hardwood in Orthotropic Directions Kelat (Syzygium spp.)
Authors: Hamid Nur Hasmiza Abdul , Ahmad Mansur , Suratman Mohd Nazip
Published: June 2013

Wood behaves differently in three independent orthotropic directions, namely radial, tangential and longitudinal. Determination of mechanical properties of wood and the study on the orthotropic behavior could enhance effective utilization of wood as construction material. Kapur and Kelat are two commercial medium hardwoods that are found abundantly in the east-coast of Malaysia. The purpose of the study is to determine the variation of bending and compression strength properties of Kapur and Kelat in three different anatomical directions. Bending and compression tests on small clear specimens were carried out according to BS373:1987. The result shows that Kapur is higher in bending and compression strength compares to Kelat. Bending strength properties for Kapur and Kelat were found to be significantly higher on the radial direction compared to tangential direction. In compression, the strength properties are higher on the longitudinal directions that are parallel to the grain. This is followed by radial and tangential direction for both Kapur and Kelat. The result also shows that compression strength parallel to the grain for both wood species to be significantly different from those perpendiculars to the grain.
Theoretical Analysis and Experimental Study on Acoustic Emission Wave Propagation in Perforated Thin-Walled Plate
Authors: Zou Guang Ping , Chai Meng , Ren Fang
Published: June 2013

Through complex variables function, wave propagation of perforated thin-walled plates is deduced. And it is found out that the dynamical stress concentrates where the concentration parameter vertical to incident orientation is about 1.5, and with the increase of incident wave frequency, holes have less influence on the dynamical stress concentration during wave propagation. With the help of acoustic emission technique, holes do not have much effect on nondestructive test of acoustic emission.
Template Synthesis and Electrocatalytic Properties of Palladium Hollow Spheres
Authors: Lu Hai Long , Ye Wan Neng , Guo Pei Zhi , Wang Qin Chao , Lu Chao Jing , Zhao Xiu Song
Published: June 2013

Palladium hollow spheres were synthesized at room temperature using cobalt nanoparticles (NPs) as sacrificing templates. Cobalt NPs can be prepared simply by solvothermal method. The hollow nature of sample Pd were observed from the TEM image and the SAED pattern indicates the polycrystalline nature of the sample. It was found that Pd hollow spheres showed high catalytic activity towards the electrooxidation of alcohols, especially ethanol with the current density up to 2047 mA•mg-1. The formation mechanism and the structure-property relationship of Pd hollow spheres were discussed based on the experimental results.
Research on Grinding Surface Roughness of Nanoceramic Coatings
Authors: Liu Wei Xiang , Zhou Zhong Yu
Published: June 2013

Surface roughness of ceramic coatings are effected on grinding wheel grain size, bond type and grinding wheel surface roughness. Surface roughness increases with the increase of grinding depth and workpiece speed, and it decreases with the increase of wheel speed. grinding smoothly can reduce the surface roughness.
Graphene-Silicon Schottky Junction Fabricating by Laser Reduced Graphene Oxides
Authors: Shao Rui Qiang
Published: June 2013

Reported here is a new method of fabricating the graphene/silicon schottky junction. Using a femtosecond laser, graphene oxides are reduced to graphene and behave a metal. The junction of reduced GO and Si shows rectifying behavior indicating that the junction is schottky junction. Take advantage of the laser fabricating method, one can get reduced GO at any position on the substrate. Xps spectra shows that the reduced GO has only 12% oxygen content, and it is truly have a good conductivity similar to metal. This method opens a new effective way to graphene-based micro nano electronics.
Monte Carlo Simulation of Seebeck Coefficient and Electrical Conductivity in Thermoelectrics
Authors: Li Jian
Published: June 2013

we proposed a scheme for simulating the electronic and thermoelectric properties of polycrystalline ceramics. The simulation results show that the ground state electrons are easily confined in the largest grain. In addition, with the increasing average grain size, the Seebeck coefficient decreases while the electrical conductivity increases monotonically. The simulation results agree well with the available experimental results. Therefore, the proposed model is proved to be a promising approach for thermoelectric investigations.
A Study of Wearabilities of Softwarm Heating Warm Fiber Fabric
Authors: Shang Lei , Zhang Yu Juan
Published: June 2013

With the improvement of people’s living standard, the traditional warm clothing already cannot satisfy people’s diversified demands about clothes’ comfortableness, functionality and aesthetics. Hygroscopic exothermic fibers as a positive heat production type of warm fibers have attracted much attention. Softwarm heating warm fiber is a kind of new functional material and at the same time it is a representative of hygroscopic exothermic fiber. It can absorb the moisture by skin breathe and transfer it into heat energy through chemical reaction so as to achieve the purpose of warmth. In this paper, warmth property, tensile property, and drapability of softwarm fiber plain knitted fabric were tested, and comfort property, mechanical property and appearance performances of softwarm heating warm fiber fabric were investigated. Our study showed that the wearability of softwarm fiber fabric is fine, especially the warmth property which can meet our needs of warmth to knitted underwear.
Research on Aerodynamic Characteristics of Lateral Jet Control Technology
Authors: Xu Xing , Hu Jun
Published: June 2013

This paper takes N-S equation as the basic control equation, selects turbulence model, and adopts the sliding mesh technology to conduct numerical simulation for the interference of missile jet flow and inflow on the flow field in different flow conditions. The results indicate that: the lift coefficient, drag coefficient and pressure center coefficient of missile body change with the changes of flowMach number and attack angle. The lift coefficient increases with the increase of Mach number in subsonic speed, decreases with the increase of Mach number in supersonic speed, and reaches a maximum value with the increase of Mach number in transonic speed. The change rule of drag coefficient and pressure center coefficient is the same as that of lift coefficient. That is, they increase with the increase of Mach number in subsonic speed, and decrease with the increase of Mach number in supersonic speed.
Fault Diagnosis of Drilling Process Based on Rough Set and Support Vector Machine
Authors: Wang Xiao Liang , Lian Xiao Yuan , Yao Lu
Published: June 2013

Drilling process is a complicated system with characteristics of uncertainty, fuzziness and time-varying. A new way of the fault diagnosis based on RS-SVM (Rough Set and Support Vector Machine) was proposed in this paper. The related engineering factors were reduced by Rough Set theory and the main factors of the drilling process were obtained. Then the Support Vector Machine was used to establish the diagnosis models, and then the problems that the traditional SVM cannot deal with dynamic data and are prone to dimension disasters with large samples were avoided. The application in Ha35 well, Liao He Oilfield indicates that the system can diagnose the type of faults quickly and accurately. So the method can be used to diagnose the drilling process.
Application of Magnetic Flux Feedback Control in Hybrid Suspension System
Authors: Zhang Wen Qing , Li Jie , Zhang Kun , Cui Peng
Published: June 2013

Hybrid suspension system with permanent-magnet and electromagnet consumes little power consumption, and can realize larger suspension gap. We took magnetic flux signal as a state variable, and put this signal back to suspension control system. So we got the hybrid suspension mathematical model based on magnetic flux signal feedback. With application of MIMO feedback linearization theory, we can realize linearization of the hybrid suspension system. Then PIDB (proportion, integral, differentiation, magnetic flux density B) controller was designed. Some hybrid suspension experiments had been done on CMS04 magnetic suspension bogie of NUDT (National University of Defense Technology) in China. The experiment results denote that hybrid suspension control algorithm based on magnetic flux signal feedback designed has more advantages than traditional position-current double cascade control algorithm. Obviously the robustness and stability of hybrid suspension system have been enhanced.
Study on Marine Diesel Engine Waste Heat Recovery System with Multi-Stage Flash
Authors: Wang Zhi Yu , Zhou Song , Zhang Bang Long , Li Cai Ling , Zhang He Fu
Published: June 2013

As international oil price rise rapidly, the proportion of the fuel cost share of the transport cost has become increasingly high. At the same time, in order to reduce CO2 emission, the meeting of MPEC formulated and adopted the resolution on EEDI, so saving energy and reducing emission has become a marine industry benchmark. In this paper, through the study on marine diesel engine waste heat recovery system with multi-stage flash, establishing the universal model of multi-stage flash unit, and optimizing the parameters of the low-temperature waste heat recovery system with multi-stage flash. This paper constructs the power equation in matrix model, and each matrix of the model has a simple rule to be filled in, which make it versatile, and suitable for computerization, through estimating the power generation and CO2 emission reduction of the system on main diesel engine different loads, analyzing the waste heat recovery system with economic method finally.
Synthesis of Graphene Nanocomposites with Sandwiched Electroactive Methylene Blue for Electrochemical Application
Authors: Guo Xin Mei , Xia Jian Fei , Wang Zong Hua , Xia Yan Zhi , Zhang Fei Fei , Xia Lin Hua
Published: June 2013

A novel nanocomposite (MB/CRG) was fabricated by a simple and fast method. The method is as follows: graphene oxide (GO) was dispersed in methylene blue (MB), and then the MB/GO was chemically reduced to MB/chemically reduced graphene (MB/CRG) by hydrazine hydrate. MB can greatly improves the dispersity of CRG in water and at the same time, the electrochemical activity of MB/CRG nanocomposite increased. The MB/CRG nanocomposite was used to modify the glass carbon electrode (GCE), and the MB/CRG/GCE was obtained. We investigated the electrochemical behavior of uric acid, NaNO2, Quercetin and p-nitrophenol at MB/CRG/GCE and found that the modified electrode had the best catalysis towards these molecules compared with MB/GCE and CRG/GCE. The MB/CRG/GCE showed good reproducibility and stability.
Study on the Buckling Analysis of Stiffened Spherical Shallow Shell for Gasholder Roof
Authors: Jia Dong Yun , Yang Jun , Jiang De Jin
Published: June 2013

Subjected to external pressure, buckling analysis is key problem in the roof shell design of large scale cylinder gasholder. Two simplified buckling analysis methods, the continuous orthotropic plate method and the split-rigidity method, are introduced to check the general instability of stiffened spherical shallow shell. Considering the plate and the stiffeners in two directions with the same contribution to the bending stiffness, the equivalent bending thickness formula is put forward. The finite element model for a 100,000 m³cylinder gasholder roof is setup. The buckling critical loads obtained prove that the split-rigidity analysis method and formulae are applicable. The results can be referred in design of stiffened spherical shallow shell.
The Synthesis and Purification of 4-Dimethylamino-N-Methyl -4-Stilbazolium Tosylate
Authors: Zhuang Shu Jie , Teng Bing , Cao Li Feng , Zhong De Gao , Feng Ke , Shi Yong Xin , Li Ya Nan , Guo Qi Jia , Yang Ming Shun
Published: June 2013

4-dimethylamino-N-methyl -4-stilbazolium tosylate(DAST) was synthesized by the condensation and ion exchange reaction of 4-methyl-N-methyl pyridinium tosylate, 4-N,N-dimethylamino -benzaldehyde and silver p-toluenesulfonate, the reaction procedure was easy with high efficiency. The purity of the product was further improved by successive abstersion and recrystallization. The powder was investigated by Fourier transform infrared spectrum, nuclear magnetic resonance and elemental analysis. The results showed that the quality of the powder as crystal raw material was very high, the product could meet the requirements for crystal growth, the procedure of washing the product by chloroform was important to achieve the high quality.
Autonomous Marine Monitoring System Based on Energy Convertor
Authors: Jiang Jing Bo , Chen Yong Hua
Published: June 2013

A new marine monitoring system is introduced in this paper. This study is based on a taut single point mid-water mooring instrument which is packaged into a two-float assembly, with the lower float containing several times as much buoyancy as the upper float. During the system working in ocean water, an energy conserving transmission is designed under energy-balance principle. Battery pack and motor can supplement the energy dissipation which was engendered during the movement of observation vector in water. From this research, single sensor fixed on platform can meet the requirements of vertical profile measurement. Compared with other single-point marine monitoring system, the proposed system has the benefits both in technique and economy.
Realization of the Optimization of Dijkstra Algorithm in Vehicle Navigation
Authors: Gong Peng , Zang Hong Wen , Lan Ren Qian
Published: June 2013

Vehicle navigation plays an important part in intelligent transportation. The optimal route of navigation was selected based on the optimization of the algorithm of Dijkstra in topology storage structure, node storage order in topology network and route weight of Dijkstra, thus reducing participating nodes, advancing optimization speed and improving efficiency in optimization process.
Design and Implementation of Mid-Frequency Magnetron Sputtering Power Supply Based on TL494 and MCU
Authors: Zhao Yan Ling , Liu Rong Xing
Published: June 2013

Abstract. A mid-frequency magnetron sputtering (MFMS) power supply based on TL494 and MCU was introduced. A Buck Chopper and full bridge inverter were applied to the main circuit. The PWM controller TL494 was used in the Buck voltage-regulation control circuit to realize closed loop control. The drive signal of the IGBT in full bridge inverter was based on precise digital pulse width modulator (DPWM) signal produced by the MCU M30290. The DPWM can be set by potentiometer so the power supply can output the square wave with adjustable frequency and duty cycle. The power supply was operated in constant current mode. For micro or strong arcing of the target, different safeguards were adopted by the control circuit. At last, the system test and experimental results show that the stability, reliability and tuning range of the MFMS power supply can meet the requirements of the magnetron sputtering coating.
A Multi-Vehicle Tracking Algorithm Based on QPSO Clustering Algorithm and Particle Position Matching Template
Authors: Liu Shao Jiang , Mo Wei Jian , Wan Zhi Ping
Published: June 2013

In this paper,we introduce a new tracking algorithm to detect and track multiple Vehicles in highway or special area. For the traditional vehicle tracking algorithm that can not be real-time tracking of vehicles or appear to tracking chaotic situation when most of the scene is in motion and component parts of vehicles are occluded. To overcome this problem, we use a background image separation method to separate the moving vehicle and the background and introduce a QPSO clustering algorithm for gathering together color particles of vehicles moving target,finally we through the particle position matching template to achieve target matching tracking.In an experimental evaluation, we show that algorithm through processing the monitoring image of moving vehicles to show tracking information of moving vehicle in the real-time.
Collaborative Optimization and Control of Integrated Microgrid with High Penetration of Distributed Energy
Authors: Xiang Yue , Liu Jun Yong , Liu You Bo
Published: June 2013

Collaborative optimization and control of integrated distribution system/ microgrid with high penetration of distributed energy have been introduced in this paper. Along with the development of the smart grid, source-grid-load coordination framework, unit flexibility and load feasibility, muti-energy combination microgrid optimization, control strategies are introduced, and related methodologies and approaches are concluded, as well as the further research.
The Design of a Rubik's Cube Robot
Authors: Lu Si Liang , Huang Ming , Kong Fan Rang
Published: June 2013

This paper depicts the system design of a robot that can recover the disrupted Rubiks Cube automatically. The robot is a typical mechatronics system consisted of the mechanical structure and the electrical system. The recovery procedures of the Rubiks Cube are shown as follows. Firstly, the color recognition of each face of the Rubiks Cube is conducted with an industrial CCD camera. Then the embedded recovery algorithm is called, and the recovery steps are achieved. Finally, the pneumatic manipulators are driven by the pressurized air controllable via an electrical relay array, the Rubiks Cube is recovered step by step following the recovery sequences. The Rubiks Cube robots have been exhibited in several science museums in China, they are well welcomed by the audiences.
Computer Simulation of Complex Consecutive Reaction Kinetics
Authors: Xie Yu Hui , Zhang Lei , Huang Xue Zheng
Published: June 2013

Based on the mass action law, the kinetics equation of the complex consecutive reaction was established in the form of first-order ordinary differential equations. Therefore; a program was designed by the Visual Basic language and the theory of the numerical calculation to solve the ordinary differential equations. In the end, the reaction process of the complex consecutive reaction was simulated by the powerful plot function of the Visual Basic language.
Study on a Rapid Real-Time Feature Extraction Algorithm
Authors: Xu Bin , Li Xiang Na , Xue Wei Ning
Published: June 2013

A fast feature extraction algorithm is presented in this paper based on the color and point feature, With the aim of required feature points, the location of the object includes object region detection and feature point location. The area of object detection is used to look for the centre of gravity point from the scaling image. The feature point location is based on the object region detection, cuts a picture from the image, and extracts speeded up robust feature (SURF) points of the target within the cut picture. The target position is calculated according to the value of the feature points, it provides a basis for object tracking. The experimental results verify the effectiveness of the proposed method.
A Analysis and Research on the Methods of Object Oriented Software Testing
Authors: Chen Jing
Published: June 2013

This paper proposes a genetic algorithm-based method to generate test cases. This method provides information for test case generation using state machine diagrams. Its feature is realizing automation through fewer generated test cases. In terms of automatic generation of test data based on path coverage, the goal is to build a function that can excellently assess the generated test data and guide the genetic algorithms to find the targeting parameter values.
Self-Revised Opinion Leader List Construction and Influence Analysis
Authors: Fu Yi Jing , Zhang Ting , Chang Xiao , Yuan Yu Yu
Published: June 2013

Weibo is a dominant twitter-like micro-blog media in China, which indicates the trend of social changes in recent years in China. Opinion leaders, in particular, have a marvelous power to influence the thinking of the mass to some extent. In this paper, we propose an innovative model which automatically revises the selection of opinion leader list and analyzes their influence in consideration of the amount of followers and friends and topics such as life, campus, government, public welfare and entertainment. Two-step strategy is applied to our model, namely self-revised opinion leader list construction and VSM-based influence analysis. Experimental results reveal that our model has a good performance on reflecting the analysis of the relationship between authoritative opinion leaders and the mass media.
Analysis of the Process of Collapse in Supervision Control Systems
Authors: Li Yun Song , Qi Xue Kun , Xing Long
Published: June 2013

Brittleness is the basic attribute in complex systems, whose definition of brittleness is given. Through analyzing the process of collapse in complex systems, namely being motivated the process of brittleness, the definition of brittle resource, collapse, brittle recipient and brittle degree are given. Based on the above the definition of analysis, coupling degree between two subsystems is given. Finally, the process of collapse in complex systems is analyzed by the time-state method and the formula of judgement the collapse of complex systems is given. This method lays a foundation for analyzing the prediction of brittleness in complex systems.
Reviews and a New Angle of β Coefficient Prediction Method
Authors: Liu Jun Hang
Published: June 2013

The β coefficient is one of the key parameters in the capital market and risk management, and is the important decision-making basis for the stakeholders in the market economy. But from the nineteen seventies, β coefficient is unstable which has been confirmed by a number of literatures, therefore the follow-up researchers have always focused on searching for the better method to improve the accuracy of prediction of the β coefficient. This paper reviewed the existing literature about prediction methods for the β coefficient, and then gave a new method of forecasting the β coefficient-three dimensional entropy measurement.
Study on the Influence Factors of Satisfaction Level to City Property Management in China
Authors: Sun Xue , Wang Cheng Xin , Shi Jia Lu
Published: June 2013

The Chinese property management industry has been developing rapidly in the last 10 years. However, the property issues also emerge one after another, and the satisfaction level to the city property management is relatively low. Based on SPSS statistical analysis method, this paper conducts empirical analysis on the questionnaire results of residents from a certain county, summarizes the influence factors on the satisfaction level to city property management, and proposes the corresponding countermeasures to improve satisfaction level to property management.
Study on the Evaluation of Coordinated Development of Economy-Environment Composite System among Chinese Provinces
Authors: Zhang Hai Yun
Published: June 2013

Chinese economy has had great development since the reform and opening up, but as we know, the development is an extensive economic growth, which brought serious environmental pollution problems, so, the coordinated development of economy-environment composite system is becoming more and more important. And if we want so, the first thing is to evaluate the coordinated development of economy-environment composite system. This paper takes the provinces in china as the study object, and collects some data from 2000 to 2009 of 29 provinces in china, base on which this paper builds some evaluation models, such as development degree model, coordination degree model, and coordinated development model, to evaluate the coordinated development of economy-environment system among Chinese provinces.
Studies on the Biological Characteristics of Termitomyces Albuminosus Hypha
Authors: Ya Xiong , Li Min Jie
Published: June 2013

Termitomyces albuminosus is a kind of local distinctive wild edible fungi in southwest of China. It is delicious, rich in nutrition and has high development and utilization value, but owing to the restrictions of growth environment, it can not be cultivated artificially. This article mainly studied on the biological characteristics of Termitomyces albuminosus Hypha, and found out the optimal carbon source, nitrogen source, growth factors and the C/N ratio that are suitable for the growth of Hypha of Termitomyces albuminosus .
A Comparative Study of UHMWPE Multifilament and Aramid Multifilament
Authors: Zhou Lu Yu , Li Xian Bo
Published: June 2013

In order to analyze the creep properties of UHMWPE multifilament and aramid multifilament, four-element model and Matlab software were used to get creep fitting curve, the corresponding mechanical fitting equation and microscopic parameters. The creep properties of the two kinds of multifilament were discussed by microscopic parameters. At the same time, the tensile and relaxation performance of UHMWPE multifilament and aramid filament were studied. Compared with aramid multifilament, UHMWPE multifilament has higher strength, better elongation, lower creep resistance and obvious the phenomenon of stress relaxation. This article will provide some basic performance reference to the application of UHMWPE multifilament.
The Influence of Introduction of Polyethylene Glycol on Synthesis of Bimodal Mesoporous γ-Al2O3
Authors: Li Xiang , Liu Xin Mei , Yan Zi Feng
Published: June 2013

In the presence of polyethylene glycol (PEG2W),bimodal mesoporous γ-Al2O3 was successfully synthesized via hydrothermal method. The samples were respectively characterized by X-ray diffraction (XRD), N2 physisorption, transmission electron microscopy (TEM), thermogravimetric and differential scanning calorimeter (TG-DSC). Introduction of PEG2W can increase the relative crystallinity of AACH and γ-Al2O3. The BET surface area and pore volume of alumina shows an increasing trend with increasing of PEG2W content, while the pore size shows an opposite tendency. The PEG2W also plays an important role in inducing the formation of the nanorod-like alumina.
Environment Pollutant Standard: The Production Planning within Certain Pollution
Authors: Shang Hai Yang
Published: June 2013

With the development of human society, modern industrial and human life has caused serious damage on the environment. The paper has introduced the background about environmental pollution affecting the healthy and the development of socioeconomics briefly. Furthermore, a model is employed to describe the production planning within the certain pollution standard. Finally, the results show that the impact of the inducement to pollution on production output is markedly, and SO2 is obviously the COD.
Bioavailability of Vanadium in Alfalfa in V-Cd Contaminated Soil
Authors: Yang Jie , Teng Yan Guo , Zhang Dan
Published: June 2013

A greenhouse experiment was performed to investigate the vanadium bioavailability of alfalfa grown in vanadium-cadmium contaminated soil. The results show bioavailable and total vanadium concentration in rhizosphere soil is higher than it in non-rhizosphere soil. With increasing vanadium addition, its speciation in soil is transformed to AC, RE, and OX fraction, especially to RE fraction. Alfalfa has high vanadium accumulation (up to 1221.86 mg/kg), and 70% of root samples belonged to strong absorption to vanadium. Both bioavailable and total vanadium in rhizosphere and non-rhizosphere soil have direct correlation with its content in alfalfa root. The increasing cadmium addition may inhibit vanadium absorption in alfalfa roots.
Study on Environmentally-Friendly Snow-Melting Agents Application
Authors: Wu Yu Hui
Published: June 2013

s:Snow and ice control is important for expressway transportation in winter. The use of snow-melting agents is one of the indispensable measures to fight against snow and ice. Opening traffic as soon as possible and ensuring traffic safety for expressways require removing ice and snow on the pavement effectively and quickly. First of all, thematerial selection,spreading quantity must be considered in the use of snow-melting agents. How to use snow-melting agents scientifically is discussed in the paper.
Influence of Rainfall Infiltration on Landslide Treatment Engineering
Authors: Xiang Xing Hua , Li Zhi Yuan , Zhang Xiao Ting
Published: June 2013

Rainfall infiltration can induce landslides and influence engineering treatment effects. With a landslide uncounted in expressway construction in Shanxi province as an example, the bad effect of water was analyzed. Based on changes in soil strength caused by rainfall infiltration and shear experiments of undisturbed and water-saturated sliding zone soil under several conditions, the calculation parameters of soil were determined. Distribution of the maximum principal stress and shear stress inside the supported landslide before and after the rain was calculated through FEM numerical simulation and then deformation and failure mechanism of landslide was analyzed; the results reveal that for the supported landslide, the principal stress is mainly caused by gravity before and after the rain, meanwhile infiltration can induce increase in instantaneous strain and dramatic change in maximum shearing stress which is focused on the sliding surface adjacent to the bedding plane. As mentioned above, the drainage of surface water and groundwater in landslide treatment can delay landslide deformation effectively.
Preliminary Study of Groundwater Pollution about Sewage Irrigation at Malong County
Authors: Chen Jin Meng , Jiang Ying Xiang , Sun Wen Hao
Published: June 2013

It is a kind of low cost and also low power sewage treatment pathway for using sewage in irrigation, one of effective action to protect the water resources sustainable utilization in town. Using sewage in irrigation is a way of reducing operating costs at Malong County. As the yellow soil permeability is low at Malone County and the penetration rate is 1m/d. What’s more, the quality sewage used in irrigation can meet the class A demands, so this article predicted that sewage irrigation will has less impact on the groundwater at Malone County. We can get analogy method and drew experimental plan according to different influence results of water quality, soil and groundwater of Malone County.
Tensile Test of Shape Memory Alloys and Numerical Simulation
Authors: Guan Ping , Zhang Yan , Cui Di
Published: June 2013

Shape memory alloy (SMA) as an effective alternative to steel has received much attention. The constitutive model of SMA has raped developed for nearly 10 years, such as Boyd and Lagoudas model, Auricchio model, etc. However, a number of constitutive models were more complex, and not easily applied to engineering. In order to study SMA concrete pullout test using numerical simulation software, the tensile property of superelastic SMA was studied in this paper, different units (SOLID185 and LINK8) were simulated at the same time. Through the comparative analysis of results of different constitutive models, an easier used constitutive model of SMA was obtained. Combining with the numerical case, it shows that link8 is more convenient and accurate to simulates SMA.
Impact Damage Research of Sandwich Composite Laminates
Authors: Wei Li Jun , Huang Fang Lue , Li Hong Peng
Published: June 2013

Sandwich composite laminates structure is a classic application of composite material on actual aircraft structural. Dealing with low-velocity impact damage and residual compressive strength of sandwich composite laminates, explicit finite element method of ABAQUS/Explicit software was adopted to simulate low-velocity impact and compression process. Impact response and invalidation on compression between sandwich composite laminates with different core materials and regular composite laminates were compared. The simulation results indicated that softer core materials can absorb more impact energy, reduce the structure damage and enhance the residual compressive strength after impact.
Study on the Dispersion Characteristics of Surface TM Modes in Hollow Slab Waveguide with a Left-Handed Material Cover
Authors: Li Su Ping , Chen Yan , Wu Wei
Published: June 2013

The dispersion characteristics of surface TM modes in a hollow slab waveguide which consists of the core and substrate of right-handed material (RHM) and the cover of left-handed material (LHM) are investigated. Normalized frequency, normalized propagation constant and asymmetry measure are introduced to the left-handed material hollow slab waveguide. The dispersion relation is derived by using these normalized parameters, and universal dispersion curves are obtained by solving transcendental dispersion equations analytically. Existence condition and other dispersion characteristics of guided surface TM modes have been discussed in detail for different permittivity of three layers for this left-handed material hollow dielectric slab waveguide.
The Application of Orthogonal Experiment in Development of Activating Flux for TIG Welding
Authors: Wu Dan , Su Yong , Qiu Rong Peng
Published: June 2013

Conversional TIG welding has low penetration and productivity. Recently, activating flux for TIG welding has received more and more attention. The paper has developed activating flux for TIG welding by means of orthogonal experience. The activating flux developed by orthogonal experience can penetrate austenite stainless steel butt plate in thickness of 8mm once and away which is three times the one of common TIG welding in the same welding parameter.
Evaluation of Purification of Carbon Nanotubes by Air
Authors: Ling Xin Long , Zou Li Ming , Wei Yi Zhe , Xu Su , Pan Qiao Yuan
Published: June 2013

MWCNTs was purified by air treatment. When MWCNTs are treated in air at 350 °C for 4 h, the initial decomposition temperature of MWCNTs is the highest. The result can also be verified by the contrast of SEM photographs of untreated and treated MWCNTs.
An Easy Way to Synthesize YAG Nanoparticles for Transparent Ceramics via Allegro Vacuum Freeze Drying
Authors: Zhou Zhi Peng , Yang Fu , Chen Jing , Gao Xian’e , Lu Yang
Published: June 2013

In this paper, high purity, weak agglomerated, well crystallized and dispersed YAG nanoparticles were prepared by Allegro vacuum freeze drying which included solution preparation, allegro freezing, freeze drying and calcination. The results showed that the precursor directly converted into pure YAG at 900°C and no intermediate phase was found. Considering the crystallinity and dispersion, the best calcination temperature was 1100°C.
Analysis and Design of a Circular Polarization Reconfigurable Microstip Antenna
Authors: Yang Hong , Zhou Xiao Li , Xiang Gao Lin
Published: June 2013

Microstrip antenna with an arc parasitic unit is analyzed, and a Circular Polarization Reconfigurable microstrip antenna is designed. Numerical simulation is performed for the characteristics of the antenna with the software HFSS 13.0. The results show that the frequency channels of the antenna are2.40~2.52GHz as return loss is less than-10dB. whats more,3 dB axis ratio bandwidth is 30MHZ. It can realizes left-hand and right-hand circular polarization switching,and difference of orthogonal polarization is more than 20dB.Moreover, the antenna has a very well unitary radiation character and simple configuration. It is easily matched to 50Ω in low frequency band.Besides,it can satisfy the requirements of WLAN in 2.4GHz frequency band.Therefore, simulation results verifies the feasibility of this scheme.
Flutter Analysis of Viscoelastic Panels in Supersonic Flow
Authors: Zhao Wei Tao , Yu Tian Jun , Yang Xiao Dong
Published: June 2013

In this paper, dynamic instability behavior of a linear viscoelastic panel in supersonic flow is investigated. The quasi-steady piston theory of supersonic flow is employed for the aerodynamic pressure. The partial differential governing equation of isotropic flat panel is derived by introducing viscoelastic structural damping based on Kelvins model. The panel governing equation is transformed into a set of ordinary differential equations via the Galerkin approach. First-order state equations are afterwards obtained and solved by means of a standard eigenvalue calculation. The dynamic instability of viscoelstic panels is predicted by the feature of characteristic roots. The phenomena of coupled-mode flutter without structural damping and single-mode flutter with structural damping induced by the supersonic flow are observed for the different dynamic pressure values. Results indicate that structural damping plays an important role for the stability of panels flutter. Flutter threshold keeps decreasing as viscoelastic structural damping is increased.
Experimental Study on Emission Characteristics of HCCI Operation with N-Heptane
Authors: Shen Ye Chun , Zhou Jing Lei , Zhang Chun Hua , Wang Jiao
Published: June 2013

Homogeneous Charge Compression Ignition (HCCI) is a new combustion mode with higher thermal efficiency and lower emission. With the recent development of experimental and theoretical investigations, HCCI operation for high cetane number fuels has attracted more attention. As a reference fuel, n-heptane is very easy to be ignited for high cetane number and shows obviously two-stage heat release in homogeneous charge compression ignition process due to chemical properties. HC, CO and NOx emissions of n-heptane HCCI combustion with intake temperature and excess air coefficient are studied in this paper. Intake temperature and excess air coefficient have a great impact on HCCI combustion and provide important approaches to widen HCCI operating range.
The Reliability Evaluation Method for Success or Failure Product
Authors: Liu Hai Bo , Wu Jin Huang , Wang Yi Dong , Lei Jun Wei
Published: June 2013

It is illustrated that establishing the reliability assessment method for Success or Failure product is important, and make an analysis and comparison on reliability test assessment methods for the existing four Success or Failure products. Furthermore, a new kind of reliability assessment method and confidence estimation method is proposed in this paper, which is indicated as a rational and applicable method.
Cutter Location without Interference Based on Nine Points Optimization Algorithm
Authors: Han Li , Zhang Yue , Zhang You Jun , Jiang Tong
Published: June 2013

Cutter location without interference is the key question in complicated surface NC machining. Starting with the theory of minimum directed distance, this paper, aiming at the problem of cutter location path without interference in the NC machining, reaches an important conclusion that the nine points optimization algorithm based on change step and change search range can get the global optimal solution. Meanwhile, this algorithm solves the astringency problem in iteration algorithm, and avoids a number of point set calculations in the whole area. Due to its features of fast calculation, simple principal and so on, it turns out to be a very effective method to calculate cutter path in NC machining of complicated curved surface.
Synthesis and Electrical Transport Property of Sr and Cu-Doped LaFeO3-Based Cathode Material for IT-SOFC
Authors: Zhao Jie , Fu Jiang , Fu Yong , Ma Yong Chang
Published: June 2013

In order to accelerate the commercialization of SOFCs technology, the key is the development of high performance cathode materials operated at intermediate temperature. Sr and Cu doped rare earth oxide La1-xSrxFe1-yCu.yO3-δ (x=0.1, 0.3 ; y=0.1, 0.2, denoted as LSFCu-11, LSFCu-31 and LSFCu-32 ) were synthesized by solid state reaction method (SSR). The formation process, phase structure and microstructure of the synthesized samples were characterized using TG/DSC, XRD and SEM. The thermal expansion coefficients (TEC) of the samples were analyzed by thermal dilatometry. The electrical conductivities of the samples were measured with DC four-terminal method from 25 to 950 °C. The results indicate that the samples exhibit a single phase with orthorhombic and hexagonal perovskite structure after sintered at 1200 °C for 4h. The electrical conductivity of the samples increases with temperature up to a maximum value, and then decreases gradually. The small polaron hopping is regarded as the conducting mechanism for synthesized samples at T 550 °C. The negative temperature dependence occurring at higher temperature is due to the creation of oxygen vacancies for charge balance. LSFCu-32 has higher mixed conductivity (> 100 S·cm-1) at intermediate temperature and can meet the demand of cathode material for IT-SOFC. In addition, the average TECs of LSFCu-11, LSFCu-31 and LSFCu-32 are 1.22 × 10-6 K-1 , 1.30 × 10-6 K-1 and 1.34 × 10-6 K-1 respectively.