bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of the Lighting of Entrance/Exit Segments of Urban Tunnels and Outside-Tunnel Roads Based on Visual Efficiency Theory
Authors: Liang Shu Ying , Yang Chun Yu
Published: December 2013

In order to avoid the black-hole effect, illumination of higher luminance should be installed at the entrance/exit segments of urban tunnels during the day because the luminance of outside urban tunnels is relatively high. But it basically remains the same higher (current status in China) during the night while the illuminating brightness of outside-tunnel urban roads is relatively lower, which is not conducive to driving safety and wastes lots of energy. Through the comparison research of domestic and foreign relevant standards of tunnel and road lighting, as well as measurement and analysis of the present status of entrance/exit segments lighting of 11 tunnels in Fujian, Guizhou, Chongqing, and the present status of some roads lighting in Beijing, Shanghai, Chengdu and Chongqing, it is found that there are significant differences between the luminance of tunnels entrance/exit segments and the luminance of outside-tunnel roads. Especially when drive from the bright inside to the outside, that is from the inside photopic vision environment to the outside scotopic vision and mesopic vision environment. Due to high speed and poor visual fitness, there exist potential safety hazards. At present, there is no visual fitness standard for lighting of entrance/exit segments of urban tunnels and outside-tunnel roads in china, the domestic and foreign relative researches are still not enough. Based on visual features, with response time as parameter, this article applies the visual efficiency method to study the lighting of entrance/exit segments of urban tunnels and outside-tunnel roads. In this thesis, the method of weakening illumination of entrance/exit segments of urban tunnels on the basis of existing standards and enhancing illumination of outside-tunnel roads has been provided. Thus the reduced value of entrance/exit segments of urban tunnels illumination and outside-tunnel roads illumination can be controlled from 3:1 to 5:1 to adapt to visual features. This thesis provides a new research approaches for achieving driving safety and lighting energy saving.
Study on the Growth Quartz Ampoule of AgGaS2
Authors: Wu Xiao Juan
Published: December 2013

The changes in the growth quartz ampoule of AgGaS2 are studied. Coating a layer of carbon film on the inner surface of growth quartz ampoule is an effective measure to prevent AgGaS2 melt conglutinate with quartz ampoule. It can prevent the impurities of quartz ampoule diffuse into the AgGaS2 melt. The anomalous thermal expansion phenomenon of the AgGaS2 crystal usually makes the growth quartz ampoule broken, and crystal crack. Double-layer quartz ampoule can solve the problem. High-quality and large-size AgGaS2 single crystal is obtained by using carbon coated and double-layer growth quartz ampoule. These methods are simple and effective.
Nonlinear Analysis of Bearing Capacity of Reinforced Concrete Structures Using Strip Method
Authors: Tan Hai Chao
Published: December 2013

As the progress of theory and computer technology, nonlinear analysis is widely applied in civil engineering. Strip method, as one of the numerical methods, is used widely especially in the analysis of beams, columns and shell structures. The first half of this paper introduces the theoretical model and the basic assumptions of the strip method; the latter half of this paper compiles the strip method into computer program using FORTRAN language. At last, using beams with rectangular cross-section of reinforced concrete structures as an example, the paper analyze the factors, such as the strength of the steel bars, which have an impact on the bearing capacity of reinforced concrete structures.
Hemisphere-Shaped Iron Joint between PHC Pile and Steel Reinforced Concrete Column. Part I: Analysis
Authors: Lee Yeun Seung , Oh Jin Tak , Kim Young Sik , Ju Young K.
Published: December 2013

To overcome disadvantages of usual Cast-In-Place (CIP) concrete pile methods in top-down construction, some prototypes of a joint of the PHC pile to column that directly connects a column to a PHC pile are analytically studied. With the consideration of strength requirement and stress concentration of joint of the PHC pile to column, we suggest the most appropriate one.
Study on a Novel Structure of Terbium Complex, C9H24O21Tb2
Authors: Liu Hai Xing , Liu Qing , Wang Lin Tong , Wang Su Qing , Huang Ben Yu , Ye Kai Qi , Yue Hui Juan
Published: December 2013

The Tb complex C9H24O21Tb2 has been synthesized from a hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Tb atom is coordinated by nine O atoms. The molecular structure stabilized by the O-H…O hydrogen-bonding interactions.
Test Research on Strengthening In-Service Damaged Truss with Prestressed Cable
Authors: Zhang Jian Wei , Meng Yong Wang , Zhang Shi Hong
Published: December 2013

Prestressed cable is an effective way of strengthening. Through the model loading test on the two groups of wood truss, explore the effect of reinforcement to the damaged truss with the prestressed cable. Data show that, in the damage conditions, the bearing capacity of wood truss increased by 112%. Loading test on a group of steel truss, the bearing capacity of steel truss improve only about 12%. The reinforcement effect are different under the same conditions due to the two kinds of material modulus, stiffness parameters are different.
A Literature Analysis on Acoustical Environment in Green Building Design Strategies
Authors: Jalil Nurul Amira Abd , Din Nazli Bin Che , Daud Nila Inangda Manyam Keumala
Published: December 2013

Acoustic quality is important in ensuring a healthy and workable working environment. One of green buildings main objective is to reduce the building impact on human health and performance. This was emphasized in most green building rating system under its requirement for Indoor Environmental Quality (IEQ). IEQ highlights the four main points for achieving an improved indoor environment: indoor air quality, acoustics, visual comfort (lighting) and thermal comfort. Although acoustics was mentioned in the IEQ criteria, according to previous surveys and studies; acoustics quality in green buildings were not improving. It seems as though in order to improve on other green building criteria, acoustics performance is bound to become poorer. Through review of previous literature, survey and studies on acoustical performance in green buildings, the objective of this paper is to identify how green building design strategies contribute to the degradation of acoustical environment in green office buildings. Findings shows that design strategies implemented to cater for other green building requirements such as natural ventilation, daylight, reduction of finishes and office layout have unintentionally decrease the acoustical quality.
Moving Vehicle Detection Using Time Domain Statistical Features
Authors: Paulraj M.P. , Abdul Hamid Adom , Siti Marhainis Othman , Sathishkumar Sundararaj
Published: December 2013

The Hearing Impaired People (HIP) cannot distinguish the sound from a moving vehicle approaching from their behind. Since, it is difficult for hearing impaired to hear and judge sound information and they often encounter risky situations while they are in outdoor. If HIPs can successfully get sound information through some machine interface, dangerous situation will be avoided. Generally the profoundly deaf people do not use any hearing aid which does not provide any benefit. This paper presents, simple statistical features are used to classify the vehicle type and its distance based on sound signature recorded from the moving vehicles. An experimental protocol is designed to record the vehicle sound under different environment conditions and also at different speed of vehicles. Basic statistical features such as the standard deviation, Skewness, Kurtosis and frame energy have been used to extract the features. Probabilistic neural network (PNN) models are developed to classify the vehicle type and its distance. The effectiveness of the network is validated through stimulation.
Comparison of GA and PSO in Boundary Element Inverse Analysis for Rebar Corrosion Detection
Authors: Fonna Syarizal , Ridha M. , Huzni Syifaul , Ariffin Ahmad K.
Published: December 2013

This paper presents the comparison of the two optimization methods, particle swarm optimization (PSO) and genetic algorithm (GA) in boundary element inverse analysis that applied to detect the corrosion location of rebar in the concrete. This comparison focuses at analyzing the performance of both methods in reaching the global optimum, considering that both heuristics are based on population search techniques. The model of 2-dimension rectangular reinforced concrete was used as a case example to compare both methods in boundary element inverse analysis. The boundary element inverse analysis was developed by combining Boundary Element Method (BEM) and PSO or GA. The inverse analysis is carried out by means of minimizing a cost function. The cost function is a residual between the calculated and measured potentials on the concrete surface. The calculated potentials are obtained by solving the Laplaces equation using BEM. The GA or PSO is used to minimize the cost function. Thus, the corrosion location of reinforcing steel in concrete can be detected. The numerical simulation results showed that one of PSO or GA can be used for the inverse analysis for detecting rebar corrosion by combining with BEM. However, it shows that PSO seem numerically superior compared to GA in term of consistency and accuracy in finding global optimum solution for such a problem.
The Used of Pedal-Pad Effective Amplitude Transmissibility Value to Predict Size of Comfortable Pedal-Pads
Authors: Yusoff A.R. , Deros Baba M. , Daruis D.D.I.
Published: December 2013

Vibration transmissibility from a car body to pedal-pad could result to drivers discomfort and fatigue, which may lead to health problems. Vibration transmissibility occurs when the vehicle engine is turned on and vibration is transmitted from the car body to pedal-pad in this research Pedal-pad effective Amplitude Transmissibility (PEAT) value was used to predict suitable size of the pedal-pad that could provide comfortable operation of the pedal. In this study, the variables are the three different sizes of pedal-pads and data was recorded while the car was moving on the road at constant speed with three different sizes of pedal-pads. The data was measured in root mean square (r.m.s) unit, of the frequency weighted acceleration (m/s2) for every minute. The finding of the study shows that percentage PEATr.m.s of the three different sizes of pedal-pad is greater than 100%. It shows that vibrations to pedal-pads are greater than vibration from the car body consequentially it means that the foot on the pedal is exposed to higher vibration transmissibility than the foot on the floor.
Infrared Monitoring Studies of Winding Temperature Rise in Electrical Equipment
Authors: Cui Jin Tao , Zhang Yan Yan , Niu Lin , Zhan Jie , Huang Jin Xin
Published: December 2013

Winding temperature rise is inevitable for electrical equipment. There is no harm when device is working properly. However, winding temperature rise will be abnormal when equipment failure exists, this will affect the normal operation of equipment even cause electrical accidents. According to the principle of winding temperature rise, we designed an experiment in which the winding temperature rise is real-time monitoring by the thermal infrared imager. Then we get the data and analysis them,after all we simulated the procedure of monitoring and troubleshooting by infrared technology for equipment in electrical system.
Application of Knowledge Management in E-Commerce Based on Fuzzy Theory
Authors: Yu Cheng , Lin Shi Wei
Published: December 2013

Basing on the introduction in the knowledge management and E-commerce concept and main theory, this paper discusses the relationship between knowledge management and E-commerce, put forward E-commerce to build the foundation o f knowledge, information flow and organization structure for knowledge management and the thesis that knowledge management constructs the sustainable competitive advantage for E-commerce. It also compares and analyzes the knowledge management and E-commerce popular model, Proposes the individual-centered organization, knowledge and business three dimensional model and the knowledge and business system model of business process which is based on the former.
Attitude Solution for Carrier Based on Quaternion Differential Equation of Picard Solver
Authors: Gou Zhi Yang , Jiang Lai Wei , Fan Sheng Hong , Liu Chang Ru , Wang Qiang
Published: December 2013

The attitude information is indispensable to realize the full range of navigation part. Besides, in aerial remote sensing, photogrammetry and laser scanning, we can get exterior orientation elements by attitude of device. Based on Picard solving quaternion differential equation realized the real-time dynamic attitude matrix updating and attitude solution. Comparison of IMU three axis output, calculation error of heading is 0.036183°, pitch is 0.007969° and roll is 0.009627°. Finally, verify the feasibility and stability of Picard solving attitude.
Simulation and Analysis of Three-Dimensional Arterial Trees
Authors: Zhang Yan , Xie Hai Wei
Published: December 2013

For hemodynamic simulation and heat transfer analysis of blood, it is necessary to generate a three-dimensional model of arterial tree. Referring to the approach of Constrained Constructive Optimization (CCO), a new method based on bifurcation law, Poiseuilles law and mass conservation was proposed to model arterial trees directly in simulation objects. The formulas for calculating the bifurcation ratios and the way to determine the location of bifurcation point were presented in the paper. In this model, the radius of the root segment was constant, the terminal pressure was unknown and the bifurcation exponent was variable. In order to demonstrate the feasibility of this method, an arterial tree was constructed in a spherical tissue.
A Controller of Motor Discrete Variable Frequency Soft Starting and Harmonic Filtering
Authors: Deng Shi Jie , Chen Jing , Wang Qing , Song Xing Yu
Published: December 2013

The started motors with the discrete frequency converter are characterized by high starting torque and a large number of harmonics when the motors draw heavy-loads. It may pull down the voltage of the power supply net work and influence the other electrical devices. Furthermore, it increases the motor temperature, which may lead to motor damage. Therefore, an integrated device of motor discrete variable frequency starting and harmonic filtering was developed. In this paper, a controller is designed to control the motor during the soft starting/stopping and keep the harmonics in permitted ranges by harmonic filtering. The following works have been done in the study: the needs analysis of the controller, design the hardware based on the PLC and the software design of the controller. The motor starter developed with this controller has been successfully applied to the loads of the drive equipments. It can improve the starting performance when the motors draw the heavy-loads, save energy, stabilize the voltage of the power supply network.
Study on a Novel Tunable Piezoelectric Energy Harvesting Structure
Authors: Guan Ming Jie , Li Ying Tai , Zhao Yang
Published: December 2013

This research proposes a novel piezoelectric harvester structure which is constructed by a cantilever base beam and piezoelectric elements bonded with the base beam in a certain manner. By changing the electrical boundary conditions of the piezoelectric elements, the resonant frequency of the beam structure changes accordingly. Two kinds of manners in which piezoelectric elements are bonded with the beam are investigated and compared with ANSYS simulations and experiments. The results showed that the embedded manner surpasses the surface-bonded manner with the frequency variation ratio of 3.17%.
Observability Analysis for MAUVs Cooperative Navigation System Based on Moving Long Baseline
Authors: Ma Peng , Zhang Fu Bin , Xu De Min , Yang Shao Kun
Published: December 2013

This paper addresses the observability problem of 2D Multiple Autonomous Underwater Vehicles (MAUVs) cooperative navigation system. We derive the conditions to keep the local weak observability of navigation system using the Lie derivatives, and characterize the unobservable trajectories of AUVs. We design a series of simulation experiments using the Extended Kalman Filter (EKF) to verify the theoretical results. Finally, the simulation results show that the good performance of navigation system can be presented if avoiding the unobservable trajectories of AUVs.
Dynamic Jacobian Identification Based on State-Space for Robot Manipulation
Authors: Zhong Xun Gao , Peng Xia Fu , Zhong Xun Yu , Lin Li Xiong
Published: December 2013

This paper focused on the dynamic Jcobian identification for robot visual feedback control in unstructured environments, there is the robotic manipulator without kinematics model, and the camera without calibration. First, a visual servoing scheme based on Kalman filtering (KF) to model-independent robotic manipulation is proposed. The Jacobian identification were solved by formatted as state estimation problems, the desired Jacobian is optimal estimated under minimum-variance condition to achieves robotic precise converge to the desired pose. Our method, without requiring modeling parameters, thus this avoids the corrupted performances cause by calibration errors. To demonstrate the performance of proposed scheme, the experimental results have been presented using eye-in-hand configurations.
Optimization of Production Takt for Automatic Press Line Based on Synchronous Motion of Press and Robot
Authors: Shan Dong Ri , Zhang Yan Yan , Men Xiu Hua
Published: December 2013

Motion synchronization is a new pattern in robot and press collaboration. In this paper, a synchronous motion algorithm of robot and press to improve production takt of automatic press line is proposed. First of all, we investigate the influence of different velocity and acceleration on identical trajectory of Fanuc handing robot with 6-degree of freedom (DOF), finding the robot trajectory is independent of the velocity, and is essentially coincident in the same acceleration. Moreover, we present a synchronous motion algorithm on the basis of the trajectory invariance and the velocity formula. The algorithm is approached from the point of view of path planning, takt optimization goal and design formulas. It can automatically adjust robot velocity by eliminating the waiting time at the loading and unloading passage. Finally, the results of simulation experiments have demonstrated the efficiency of the proposed algorithm. It can effectively get around robot frequent clutches and the brakes to achieve the goal of optimizing production takt.
The Design and Implementation of Intelligent Farmland Irrigation System
Authors: Huang Shan , Liang Feng Mei
Published: December 2013

Aiming at the problems of low efficiency of traditional irrigation systems as well as the pay difficulties, a new design scheme of intelligent irrigation system based on RFID is proposed. GPRS module, RFID module, the power measurement module being controlled through Master module completes the intelligent irrigation. The presented method shows convenience, stabilization, reliability and application value.
The Analysis and Application Research on the Performance of Describing Based on an Abstract Grid Workflow Language
Authors: Yu Wan Jun , Liu Yun Xiang , Fang Hua
Published: December 2013

Grid Workflow Language
Yu wan jun1,2, Liu Yunxiang1,2, Fang Hua1,21 Shanghai institute of technology, School of computer science and information engineering, Shanghai, 201418, China
2Shanghai institute of technology, research center of machine olfaction, Shanghai, 201418, China
Key words:Intelligant System; Grid Workflow; Activity; Parallel Structure;
Abstract:Grids specification is one of the imporant contents in grid workflow fields, it can shield details of underling grid, so users can concentrate on the description of Grid applications. AGWL(Abstract Grid Workflow Language) is an abstract language based on XML, it was always used to describe grid workflow. The basic activities are connected by the control flow and data link. AGWL uses advanced control flow to support the parallel execution of conditions and loops. As an example, we finally introduced a sales process to show the capacity of the grid workflow language AGWL.
Structural Behavior of FRP Tunnel Lining
Authors: Hara Takashi
Published: December 2013

This paper represented the numerical analysis of the tunnel lining which was used for maintaining the old tunnel. The tunnel lining was made from FRP corrugated sheet that supported the lining concrete in the tunnel and flowed the water or / and the moisture swept on the tunnel surface. The FRP sheet was supported by the anchor bolts. In numerical analysis, the finite element degenerate shell was adopted to represent the FRP behavior. Firstly, the proposed FRP sheet was adopted and the distribute load equivalent to the concrete peeled from the tunnel lining was applied and the stresses of the FRP sheet, the tensile force of bolts and the deflection of FRP sheet were investigated. Then, secondary, the FRP corrugated sheet with longitudinal cover strip was investigated. From the numerical analysis, the effectiveness of the FRP corrugated sheet was confirmed.
Experimental Study on the Effects of Wetting-Drying Cycles of Compacted Loess
Authors: Mao Yun Cheng , Li Guo Yu , Lei Jun Xia , Zhang Li Ru , Chen Zhao Yu
Published: December 2013

It rains more concentrated in the summer with high temperature and strong evaporation in Gansu province, wetting-drying cycles usually occur in the embankment. Different collapse and uneven settlement appeared on the embankment in loess areas. Based on those engineering disease, through wetting-drying cycles tests of compacted loess, results show that void ratio increased, dry density decreased and cohesion significantly reduced with violent wetting-drying cycles. This illustrates that wetting-drying cycle has a significant impact on compacted loess and makes well-compacted loess with collapsibility again, it is the important reason of uneven settlement of embankment in northwest loess areas.
Speech Emotion Recognition Based on EMD in Noisy Environments
Authors: Chu Yun Yun , Xiong Wei Hua , Chen Wei
Published: December 2013

In the speech emotion recognition process, How to obtain effective characteristic parameters from the emotional data including the noise is one of the significant and difficult problem. This paper first removes the gauss white noise with the adaptive filter. Then the Mel Frequency Cepstrum Coefficients (MFCC) based on Empirical Mode Decomposition (EMD) is extracted and with its difference parameter to improve. At last we present an effective method for speech emotion recognition based on Fuzzy Least Squares Support Vector Machines (FLSSVM) so as to realize the speech recognition of four main emotions, i.e, anger, happy, surprise and natural. The experiment results show that this method has the better anti-noise effect when compared with traditional Support Vector Machines (SVM).
Deformation Analysis of Asphalt Mixtures with Digital Image Correlation Method
Authors: Li Kan , Wang Duan Yi , Li Jia , Cai Xu
Published: December 2013

Based on digital image correlation method (DICM), this paper promotes a new method for tracking the movements of coarse aggregates of asphalt mixtures. The four-point bending fatigue test is applied as the observed test. The fatigue damage process of AC-16 asphalt mixture is observed by CCD camera. Results show that the new method is able to well reflect the exact displacement of coarse aggregates under different loading repetitions. And the movement trends also reflect the influences of cracks in the specimens. Compared to the original method, the new method provides more detail movement information of different materials (aggregates and asphalt binder). This method helps to the research of asphalt mixtures in meso-scale.
Evaluation the Drainage System of Residential Area Based on Dynamic Wave Routing Algorithm
Authors: Zhang Xian Min , Li Gang , Zhang Run Feng
Published: December 2013

Based on the dynamic wave routing algorithm of SWMM model, this paper simulated the residential area drainage system. Then combining with the status reports, such as link summary, node summary, time series plot and the link profile plot, the drainage system of residential area is studied. And the drainage capacity of drainage system, the status of surcharging node and surcharging conduit under heavy rain situation are given. In accordance with the requirements of criterion, this paper used the method of iterative algorithm to improve the drainage system, and finally built the drainage system which meets 2 year storm.
Urban Transport Issues in Cotonou: Analysis and Perspectives
Authors: Gomina Mama Fousseni , Yang Zhong Zhen , Akpado Boukon’la Ayedun Akimbi , Kawie Zogar John
Published: December 2013

This paper analyzed the urban mobility and mode of transportation within Cotonou, by diagnosing the current problems of transport through the role of each transports actors, demographic. Based on the survey which highlights the characteristics '' household-mobility in Cotonou, this research revealed, on one hand, the large gap between the transport infrastructures and the transport demand, and in the other hand, the exceptional case of mobility in this metropolitan area, where the motorcycles largely dominate the other mode of transport in the city, including public buses which implementation has failed. In the end, some recommendations have been made and proposals formulated in aim to respond efficiently to the urban transport problem in Cotonou.
A Ganglioside from the Lipid Soluble Fraction of Sika Deer Antler
Authors: Bao Ni Na , Yin Yong Guang , Wang Quan Kai
Published: December 2013

Sika deer antler velvet layer is a kind of precious traditional Chinese medicine, which has been widely used for treatment of some diseases. In this study the extraction of ganglioside from the lipid soluble fraction of sika deer antler velvet layer was investigated. The quantitative effects of ratio of liquid to raw material, temperature, time were investigated for extraction of ganglioside. The optimal ganglioside extraction conditions were determined: ratio of liquid to raw material 11, temperature 40°C and time 7min. Residue which was separated from the lipid soluble fraction of sika deer antler velvet layer was proved to be ganglioside by IR.
Optimized Extraction of Ganglioside from Sika Deer Antler
Authors: Bao Ni Na , Yin Yong Guang , Wang Quan Kai
Published: December 2013

In this study the extraction of ganglioside from the lipid soluble fraction of sika deer antler was investigated using response surface methodology (RSM). A three-level Box-Behnken design which was based on the results of a single-factor test was employed to optimize the parameters for extraction of ganglioside. The experimental results were fitted with a second-order polynomial equation by a multiple regression analysis. By solving the regression equation and also by analyzing the response surface contour plots, the optimal ganglioside extraction conditions were determined: ratio of liquid to raw material 11, temperature 40°C and time 7min, and the maximum yield of ganglioside extraction was 1.25%.
Study of Co/ZrO2 Catalysts in Fischer-Tropsch Synthesis
Authors: Zhao Hong Xia , Lü Hai Liang
Published: December 2013

The investigation has been conducted to establish the effect of preparation methods on the textural properties, the metal-support interaction of the Co/ZrO2 catalysts and consequently its influence on Fischer-Tropsch synthesis. Coprecipitated Co/ZrO2 catalyst showed the strongest cobalt-zirconia interaction, the lowest reduction degree, and the lowest catalytic activity. Impregnated Co/ZrO2 catalyst showed the weakest cobalt-zirconia interaction, the highest reduction degree and the highest catalytic activity, while Co/ZrO2 catalyst prepared by directly impregnation Zr (OH)4 with cobalt nitrate solution were in the middle of CZC and CZI. The differences among the three catalysts could be ascribed to the different aging time of the support.
Development of a Novel Method for Measuring the Arc Length of Curving Skeleton
Authors: Zhang Wei Jian , Wang Ji Zhong , Wang Wen Shuo
Published: December 2013

The purpose of this study was to develop a novel method to precisely measure the arc length of curving skeleton. We developed a formula by using differential equation and the arc length of bending bones can be calculated according to the chord length and height. With this method, we measured the coronal arc length of parietal bones in fetus. Our results showed that the arc length calculated using the formula was not significantly different from those obtained by manual measurements (P>0.05). We concluded that this method was simple, precise and can be used to measure the ossification length of any fetus parietal bones with less than 180o curvature or the arc length of bones in other parts of humans.
Evaluation on Urban Low-Carbon Economy Development of Cities
Authors: Zhang Li Na , Peng Xiao Jian
Published: December 2013

Adopting the PCA and AHP methods, this paper builds up the low-carbon economic development evaluation system on four aspects: resource endowments, level of technology, consumption patterns and stages of development, to evaluate the low-carbon economy on subsystem and comprehensive development prospect. Taking Nanchang city for example, the research conclusion shows that the low-carbon economy of Nanchang enjoys a good momentum of development rising, which conforms to the reality and turns out to be practical. In this context, we propose feasibility countermeasures and suggestions for the development of Nanchangs low-carbon economy at the end of this paper.
Support Modification on the Catalytic Performance of Co/SiO2 Catalyst in Fisher-Tropsch Synthesis
Authors: Zhao Hong Xia , Lü Hai Liang
Published: December 2013

The effects of support modification on cobalt based catalysts in Fischer-Tropsch synthesis were investigated. Part of silica support was modified with ammonia solution and the other part not. The Co/SiO2 catalyst with the support surface modified by ammonia solution showed larger particle size, strong Co-Si interaction, higher activity and selectivity in Fischer-Tropsch synthesis. It could be concluded that the support acidity can be controlled thus affected the reaction property of the catalysts in Fischer-Tropsch synthesis.
Optimization Design Study on a New Type Underwater Turbine Engine
Authors: Zhang Fang Fang , Zhang Zhen Shan , Zhu Rui
Published: December 2013

In order to improve economic performance of a new type underwater turbine engine, objective function with maximizing inner efficiency in design condition is constructed based on establishing design calculation model of single stage impulse turbine engine. By using GA algorithm, optimization match study is finished among four parameters, such as working back pressure of turbine engine, mean diameter of turbine cascade, air-in inclination angle and diffuse angle of nozzle, and whose effect on inner efficiency is studied respectively. Results show that, for the engine studied, inner efficiency has sensitivity to working back pressure, while not to diffuse angle of nozzle. Which has been improved by 6.24% after optimization design in design condition, and working substance consumption per second has been decreased by 5.87% correspondingly, so economic performance of the studied engine has been improved obviously. The established model and its calculation results provide initial model and parameters for thermodynamic simulation for turbine engine in off-design condition.
An Elastoplastic Model for Coarse Grained Soils Obeying Lade's Dilatancy Rule
Authors: Wang Jin , Li Jiao Na , Zhu Sheng
Published: December 2013

This paper discussed the mechanism of dilatancy in coarse grained soils. Large-scale triaxial tests were also conducted to study the dilatancy law of coarse grained soils. Based on the results of the previous studies, it is found that plastic potential function proposed by Lade can fit the test results well. Lades dilatancy rule was then applied to a practical two-yield-surface model. Elastoplastic formula of the two-yield-surface model was also deduced in detail. The new model was verified with several groups of different materials. Results showed that this model could predict the behaviors of coarse grained soils well.
Design of Humanoid Robot Control System
Authors: Guo He , Cao Guo Hua
Published: December 2013

According to the function requirement of humanoid robot, advance a distributed control system of humanoid robot control system which use AVR (Mega2560) microcontroller as its main computer. The ATmega168 SCM acts as the core chip of the Joint controller, it receives instructions by serial port communicating with the main computer, and output byte signal,which processed by 74HC595 will finally turn into PWM signal and realize the servo control. Experiments show that the proposed control system is stable and feasible.
Design and Implementation of the Topic-Focused Crawler Based on Scrapy
Authors: Xie Dong Xiang , Xia Wen Feng
Published: December 2013

E-commerce websites has abundant commercial data. Some very beneficial information to the analysis and prediction of the market can be discovered from these data by applying data mining techniques. The topic-focused web crawler can crawl and gather the subject-related web pages as soon as possible. This thesis has designed and realized the topic-focused crawler based on Scrapy. It firstly introduces the design idea of the crawler and highlights the functions of Scrapys every part. Then, it uses this topic-focused crawler to realize the capture of information from the C2C e-commerce platform, for example TaoBao. At last, it obtains the running result and comparisons of crawling performance between Scrapy based crawler and general crawler.
Local Synchronization for Time Varying Topological Networks
Authors: Wang Li Fu , Ding Jian , Kong Zhi
Published: December 2013

In this paper, local synchronization problem of complex networks is theoretically and numerically studied. Base on the Lyapunov stability theory, a sufficient criterion for local synchronization of complex network which have the time-varying connection topologies is derived via designed decentralized linear controllers. And a numerical example of typical the Rössler network system with time-varying linear coupling has been used to demonstrate and verify the proposed. And, the simulation results show the effectiveness of proposed synchronization approaches.
On Constructing 2-Connected2-Dominating Set Using Distributed Algorithm
Authors: Wang Xue Yu
Published: December 2013

This paper proposes a distributed algorithm to construct a 2-connected 2-dominating set. The main ingredient of this algorithm is that the nodes in the loop are 2-vertex connected. It starts from any node, and forms a localized loop made by dominating nodes. The nodes in the loop are 2-vertex connected. Basing on this loop, the algorithm continue to construct other loops formed by dominating nodes until the nodes out loops are 2-dominated.
Design of Engine Idle Speed Control System Based on CAN Bus
Authors: Chen Pei Jiang
Published: December 2013

In order to reduce the fuel consumption and emissions of automobile, the engine idle speed control method was studied. The basic concept of engine idle speed and the requirements and strategies of idle speed control were introduced, and the features and structures of CAN bus technology were analyzed. An idle speed control system of automobile engine based on CAN bus was designed which included main control module, front control module and rear control module. The overall structure, hardware design and software implementation of the system were given. The system can realize the desired functions, and it has certain application value.
Study on Central Air-Conditioning System Based on Fuzzy Prediction Control
Authors: Zhao Yan Qiu , Zhang Hong Ling , Zhang Xiao Feng
Published: December 2013

To improve the energy efficiency of central air-conditioning system, established a central air-conditioning control system based on fuzzy prediction control and LonWorks. Fuzzy prediction controller design consist of upper computer and lower computer. Upper computer fuzzy control program written in VB to achieve system main components of energy conservation, and used the "WebAccess" to monitor the air-conditioning system. Lower computer used the Neuron C language program to achieve energy-saving of air-conditioning terminal equipment and downloaded to the intelligent node of neuron chip to achieve energy-saving control. Finally, given the fuzzy control effect diagram.
Morphology and Thermal Properties of a New Composite Electrolyte Based on Poly(ethylene oxide) Polymer
Authors: Zhou Chang Chuan , Qi De Jiang , Wang Dong Xue , Liu Yu Qiang , Liu Chuang , Tian Yong Wei
Published: December 2013

The study of solid-state composite polymer electrolyte (CPE) using different synthesis technique and test methods is a hot spot of current topics in polymer materials science. The electrolyte is a multiphase material with the advantageous properties over different dropping fillers. This manuscript presents a new idea for preparation composite polymer electrolyte based on the poly (ethylene oxide). We use scanning electron microscopy (SEM), Differential scanning calorimeter (DSC) measurements etc. to character the polymer electrolyte and their properties. This paper contains some new results. We observed a very change improvement of ion surface morphology by adding appropriate content of dropping fillers.
Under Sampling Stochastic Resonance for Detecting Weak Signal
Authors: Shi Sheng Chao , Li Guang Xia , Li Zhi Qiang , Zhang Wei Tong
Published: December 2013

For stochastic resonance can enhance the signal-to-noise ratio, it is widely applied to detect weak signal in a strong noise background. Aiming at the issue of the traditional stochastic resonance only applicable to deal with small parameters signals, a weak signal detection method based on under sampling stochastic resonance was proposed. Stochastic resonance was successfully expanded into the applications of the large parameters signals on the basis of scale-transformation and retrieve technology in the under sampling stochastic resonance. The improved stochastic resonance model was put forward and simulation results have proved the validity of the method. Large parameters weak signal mixed with strong noise is detected accurately. This method is effective for future application.
Synthesis of Guerbet Alcohol Acrylate Aided by Microwave
Authors: Dong Xu , Zhang Xiao Hui , Zhou Ming Hui , Wang Wen Huan , Wang Jing Chang
Published: December 2013

Guerbet alcohol acrylate was synthesized using acrylic acid and guerbet alcohol alcohols as reactants, p-toluenesulfonic acid as catalyst, hydroquinone as polymerization inhibitor and toluol as solvent by microwave irradiation heating instead of the conventional heating with oil bath. The structure of product was characterized by FT-IR, 1H-NMR, 13C-NMR and the effect of different reaction parameters was discussed in this paper. A procedure for the generation of fairly clean guerbet alcohol acrylate is well developed and the results indicated that under the appropriate reaction conditions the esterification rate of guerbet alcohol acrylate could be achieved above 98%.
Study on Evacuated Tubular Solar Air Collector with Inserted Tubes
Authors: Xu Shu Hui , Wang Jian Kai , Zhang Feng Jiao , Yan Mei Yu
Published: December 2013

This paper aims to study the heat collecting efficiency of the solar air collector with ten groups of single pipe in parallel. The simulations and experimental verification are carried out to obtain the best angle and air inlet flow rate. The result is that when the angle of the collector is 45 °and the inlet flow rate is 48.6 m3/h (2.7 m/s), the heating effect is the best for the solar air collector we have studied in this article. The average collection efficiency of it during stable operation can reach 65%.The simulation results are consistent with the experimental results. In practical application the results can provide a theoretical foundation to choose the appropriate flow rate and angle of the collector.
The Overview of Electric Locomotives Capacitor Bracket Parametric Design Based on the Secondary Development of Pro/E
Authors: Sun Xiao , Wu Yu Long , Lu Xiang Jiang , Liu Yong Bin
Published: December 2013

According to the different specifications of capacitor frame structure similar, designed by different designers, it will cause unnecessary duplication of labor, long design cycle, high cost, and the probability of error is relatively large, probably the same problem recurring. It causes not only the waste of manpower and resources, but also the existence of manufactured parts cannot be assembling a series of follow-up questions, it needs to be modified to normal use, causing great resistance to the research and development of new products. So that the competitiveness of enterprises in the same industries was at a disadvantage, based on the secondary development of Pro/E to solve the above problem.
Study on Factors Affecting the Range of Electric Vehicle with ADVISOR
Authors: Wu Fei , Wang Jian , Wu Zheng Bin , Chen Xiang Po , Li Rui Tao
Published: December 2013

A simple mathematical model of the range of EV is established in this paper and it is used to analyze the main related factors. A kind of electric vehicle model is also constructed and analyzed in simulation software ADVISOR. From the results of analysis, the regulation of influence of some affecting factors on the driving range of EV can be obtained. All these regulations are helpful for us to promote our designing of EV.
An Adaptive Charging Control Strategy for Electric Vehicles Based on Wi-Fi Technology
Authors: Xu Shi Ming , Xi Wan , Shuo Liu , Feng Wu
Published: December 2013

The uncertainty of driving area, the power load control of charging facility and charging rates make electric vehicles(EVs) facing different charging facilities, so it is necessary to control charging in the charging process. An adaptive electric vehicle charging control strategy was proposed in this paper. The strategy uses wifi for communication, communicating with charging pile through wifi, charging facilities and electric vehicles can exchange parameters to achieve adaptive control of the charging process. And experiment was conducted for verification.
Foam Concrete through Electric Technology
Authors: Zhabin Dmitryi V. , Sokov Viktor N. , Zemlyanushnov Dmitryi Y.
Published: December 2013

The article considers possible production of foam concrete through an intensive method of processing the foam mass providing for the completion of physical, chemical and structural formation processes. The physical aspects of temperature gradients arising in the foam mass under the effect of combined hydraulic-and-heating field of forces are shown.
Experimental Evidence on the Thermal Performance of Opaque Surfaces in Mediterranean Climate
Authors: Franzitta Vincenzo , Milone Angelo , Milone Daniele , Pitruzzella Salvatore , Trapanese Marco , Viola Alessia
Published: December 2013

The thermal insulation of buildings, intended as wrap feature which determines the dispersion of heat, the reference parameter is necessary to contain the thermal losses during the winter season. The transmittance of the opaque components, used as an indicator of the energy quality of a casing, together with the overall coefficient of dispersion, represents a proper descriptor of the behavior during the heating season.
However, if a strong insulation in winter conditions brings only positive effects, the same cannot be said for the summer conditions. A high value of the insulation in the casing is convenient only when the gains free, either in the form of solar contribution that of endogenous heat, are controlled and restricted. From the national transposition of the 2002/91/CE legislation up to the 2010/31/EU on the energy performance of buildings, performance values are set very restrictive transmittance of opaque surfaces that both of those transparent to the new buildings. The same does not happen for the thermophysical characteristics able to implement strategies for the control of solar radiation during the summer period, the fluctuations in external temperatures during the summer period.
This article shows some experimental evidence of the effects on transmission rate and density of the opaque elements of the buildings carried out on a case study of a representative building of climate-Mediterranean summer: The study verify the results produced by increased insulation of the building envelope on energy performance of buildings during the summer through indicators such as temperature and energy consumption to maintain the same constant with respect to the prescribed values.
Reinforcement and Reconstruction of Rural Breeding Sheds
Authors: Ma Zhao Xia , Wang Yu Lan , Yan Guang Cai
Published: December 2013

There are a lot of the potential security hazard in many rural breeding sheds. Some which are improper construction has jeopardized to people's lives and wealth. Peasants themselves mostly construct breeding sheds by the traditional empirical formula or the mimetic one in order to cost savings. Reasonable construction structure and correct building methods have a positive effect on reducing property loss and protecting people's safety.
Case Study of Building Energy and Environment Management System on Campus: A Report from Southeast University
Authors: Peng Chang Hai , Mu Yan Juan
Published: December 2013

Sustainability on campus has become an increasingly important issue. In this paper, an integrated building energy and environment management system (BEEMS) on campus is proposed based on the campus network. The system includes two components: energy monitoring and environment monitoring. The system employs local network on campus and uses ZigBee technology to gather energy or environmental data from anywhere on campus. This system can supply rich analysis and report functions to monitor both the energy consumption and environmental parameters, which can ultimately improve the energy automation management level of the campus and help create a sustainable, healthy campus environment.
Study of Traditional Tibetan Architectural Material and Security
Authors: Hou Chao Ping , Zhao Can
Published: December 2013

Yushu earthquake, Qinghai province seriously damaged the local Tibetan traditional buildings. With the local geographical characteristics and religious significance of the Tibetan traditional architecture, post-disaster reconstruction should inherit the local people's cultural tradition as well as create a positive, intimate space, so that the victims could re-feel the sense of their original homeland. Therefore, with the premise of respecting local customs and traditions, this paper argued that applying the advanced disaster-resistant construction techniques and materials performance into the design could improve the security, stability as well as highlighting the regional characteristics.