bluuebunny/crossref_metadata_2025 huggingface dataset:
Chinese Patent Efficacy Phrase Recognition
Authors: Hou Ting , Lv Xue Qiang , Xu Li Ping
Published: March 2015

Effect information, as foundation of the patent efficacy analysis, the completeness and accuracy has the decisive significance to analysis result. In order to improve the efficiency of extraction of effect information, the paper proposed one kind method based on conditional random field model (CRFs) to recognize effect phrases. Efficacy phrases are highly generalization, and divided into effect theme, attribute and the efficiency value of three parts. Phrase recognition is recognition of the three parts. We make use of the sentence features in which the phrases exit, the lexical features and clue words with the composite template to discriminate the efficacy phrase on Patent abstract file. The experimental results show that the proposed method is effective, accurate rate is 79.25%, the recall rate is 56.7%.
Implementation of SVD Parallel Algorithm and its Application in Medical Industry
Authors: Wu You , Liu Lei Feng , Zhao Xue Liang , Zhong Kun Hua
Published: March 2015

Singular value decomposition (SVD) is an important part of the numerical calculateion.It is widely used in biology, meteorology, quantum mechanics and other fields. It is discovered that the speed of calculation and accuracy has become the two basic questions of singular value decomposition during the construction process. With the era of big data,there are more and more cases of largescale data analysis using SVD. Singular value decomposition was originally an algorithm for computing resources are consumed, if still using the traditional stand-alone mode, will consume a lot of time cost. In order to improve the computing speed and accuracy, the system implement the parallel SVD algorithm which is based on unilateral jacobi method.It is used to analyze large-scale matrix about medicine for finding similarity of medicine efficacy.
Face Recognition Based on a Combination of Increasing Virtual Samples and Kernel Principal Component Analysis
Authors: Zhang Hao , Wang S.F.
Published: March 2015

In pattern recognition such as face recognition, the recognition result is not only limited by the quality and quantity of samples, but also limited by the extracted principal components. For improving the quality and quantity of training samples and for extracting more efficient principal components, this paper presents a recognition method combing the increased virtual samples and kernel principal component analysis (KPCA), which doubly weakens the influence of nonlinear factors on face recognition. New database is generated with the pose-changed and the mirror-like virtual images. Then KPCA is used for dimension reduction and feature extraction. The shortest Euclidean distance is applied to measure similarity. A series of experiments are conducted in the ORL and YALE face database and the experimental results show the efficiency of the proposed method.
Analysis of Single-Vehicle Crash Injury Severities in Urban River-Crossing Road Tunnels
Authors: Jiang C.M. , Lu J.J. , Lu L.J.
Published: March 2015

Based on the originally unprocessed data from the Official Platform of“110”Alarming Receiving Center (OP110ARC) of Shanghai Public Security Bureau (SPSB), 529 single-vehicle crashes reported during one year and a half which happened at the thirteen urban road tunnels going across the Huangpu River are used in this study. To investigate the factors affecting the crash influence severity levels, ordered probit regression is established. Several categories of factors are considered as explanatory variables in the models. The study finds that the entrance of the tunnels is the site where severe injury crashes trend to occur. Rainy and snowy days impose vehicles and motorists driving via the tunnel sections in danger. Tunnels with a low speed limit (40 km/h in this study) may be not as safe as we thought before. Two-wheel vehicles without sufficient physical protection for its drivers and heavy vehicles also show a negative effect on the operation safety of single-vehicle at these studied tunnels. Alcohol involved drivers are more likely to suffer from a severe crashes and gets badly hurt.
Boundary Layer Effect on Jet Control Effectiveness
Authors: Mitra A. Surya , Manideep A. , Rathakrishnan E.
Published: March 2015

The mixing characteristics of a sonic jet issuing from a circular orifice and nozzle of same exit area, controlled by U-shaped tabs were studied experimentally, in the presence of a favorable pressure gradients corresponding to nozzle pressure ratios (NPRs) of 3, 4 and 5. Mixing of controlled and uncontrolled jets from orifice and nozzle, with the surrounding environment has been analyzed, using the jet centerline pressure distribution. The waves prevailing in the jet field were visualized using shadowgraph technique.
The Fault Signal Extraction Research in the Electric Power Metering System
Authors: Zhao J.J. , Liang Wei , Ge H.J.
Published: March 2015

On the basis of the resistance model of high voltage electric power metering system, we make a study on the saturation of the measuring CT when the load is heavy. Through experiments on measuring current transformers, we chose high-quality power frequency magnetic core of the least saturation. On the secondary side of the measuring CT, circuit debugging was carried on and through experiments, optimal circuit parameters were determined to optimize the detection circuit which reduced the resistance of the secondary side of the measuring CT to the utmost to decrease the magnetic flux in the magnetic core to weaken saturation. Through FIR filter we extract detection signal from the fault signal to diagnose the fault. The practical test show the extracted detection signal can accurately judge the fault.
The Paradoxes of Big Data
Authors: Liu Xin Xing , Wu Xing , Dai Shu Ji
Published: March 2015

The era of Big Data poses a big challenge to our way of living and thinking. Big Data refers to things which can do at a large scale but cannot be done at a smaller size. There are many paradoxes of Big Data: In this new world far more data can be analyzed, though using all the data can make the datum messy and lose some accuracy, sometimes reach better conclusions. As massive quantities of information produced by and about people and their interactions exposed on the Internet, will large scale search and analyze data help people create better services, goods and tools or it just lead to privacy incursions and invasive marketing? In this article, we offer three main provocations, based on our analysis we have constructed some models to help explain the amazing contradiction in Big Data.
Design and Implementation of Information Management System for Training Institutions
Authors: Zhang L. , Tang Yong Zhong
Published: March 2015

By good software support, information management process will be more standardized, the work efficiency and the service quality will be improved, the communication between the training institutions and students will be strengthened. In this paper, an information management system is designed to meet the daily business requirement of education and training institutions. Starting from the requirement analysis, the analysis model, design model, the framework, and layered development process are discussed.
Mechanism Research of Bus Dynamic Information Impact on the Commuter Travel Behavior
Authors: Liu E.H. , Tian S. , Chen Q.
Published: March 2015

In this paper, according to the characteristics of the bus travel decision-making, the traffic behavior selection data in Nanjing were collected by designing traffic wishes questionnaires and a binary logit model was built on dynamic information service under the bus commuters travel route choice behavior of binary logit model. This paper analyses the effect by using the model parameter calibration including bus-taking time, bus congestion and personal information e.g. age and gender on the bus commuters travel route choice behavior. Studies have shown that public transport information are closely related to travel routes and travel activities, and bus commuters will make adjustments on travel route after obtaining travel information. Public transportation information can change the passengers’ state of participating in transportation and improve the level of the public transport system service in some ways.
Evaluation of Transit Service Quality for Urban Railway on the Basis of AHP – A Sample of ZHUHAI Station in Beginning Stage
Authors: Li Qing
Published: March 2015

Since the urban railway from GUANGZHOU SOUTH to ZHUHAI station ran less than 3 year, ZHUHAI station had a great number of passengers every day. The transit service is related to passengers’ convenience and solves traffic problems. The purpose of this research knows passengers’ satisfaction for transit service quality. AHP is built the hierarchy relationship with factors of transit service quality. Then the weight of every factor is calculated by matrix method. A synthetic model was made to estimate the transit service quality. Findings in research is that interval time of each airport limousine is best, which is followed by waiting time for buying ticket in short-distance bus. However, stopping time in each route in bus will improve in next step. Application AHP into transit service quality helps decision makers make decision of traffic management and creates a good traffic environment.Keywords: Transit service quality, Urban railway, AHP
The Business Process and Function Design of Dispatching Management System on Coal Mining Enterprises
Authors: Tan Zhang Lu , Han Qian
Published: March 2015

This paper started with an introduction of the problems emerged in the actual operation process of dispatching management in coal mining enterprises and gave a solution to these problems through the construction of dispatching management system with information technology. Then, business processes of the dispatching management system were described in detail, and the functions of each module of the dispatching management system were displayed. The dispatching management system will greatly promote the dispatching management level, and has a significance of guidance to the construction of dispatching management system on coal mining enterprises.
Adaptive Spectrum Management of Cognitive Radio in Intelligent Transportation System
Authors: Wu Cheng , Wang Y.M. , Qiang Xiang , Zhang Z.Y.
Published: March 2015

With the rapid development of urban rail transit, the demand of the public in rail transportationto take real-time, reliable and efficient wireless access services, has become the focus of mobilebroadband communications. Wireless cognitive radio (CR) over urban rail transit is a newly emergingparadigm that attempts to opportunistically transmit in licensed frequencies, without affecting the preassignedusers of these bands. To enable this functionality, such a radio must predict its operationalparameters, such as transmit power and spectrum. These tasks, collectively called spectrum management,is difficult to achieve in a dynamic distributed environment, in which CR users may only takelocal decisions, and react to the environmental changes. In this paper, we propose a reinforcementlearning based approach for spectrum management. Our approach uses value functions to evaluate thedesirability of choosing different transmission parameters, and enables efficient assignment of spectrumsand transmit powers by maximizing long-term reward. We then investigate various real-worldscenarios, and compare the communication performance using different sets of learning parameters.The results proves our reinforcement learning based spectrum management can significantly reduceinterference to licensed users, while maintaining a high probability of successful transmissions in acognitive radio ad hoc network.
3-D Measurement and Reconstruction of Workpieces in Robotic Stereovision System
Authors: Li He Xi , Zhang J.J.
Published: March 2015

An epipolar line constraint equation for robotic binocolar stereovision (BSV) is first established for the measurement and reconstruction of workpiece surface, in which the intrinsic parameters of two cameras and their extrinsic structural parameters with respect to a robotic reference base are included. To determine a sole matching point between left and right images, a laser emmiter is added to BSV to form a stripe on workpiece surface, experimental results show that the measurement accuracy of 3-dimensional (3-D) workpiece surface can be improved by combining epipolar line constraint with laser stripe projection, and the 3-D workpiece surface can be reconstructed with less errors.
The Mode Analysis of Coherently Coupled Array Based on Proton Implantation
Authors: Jiang G.Q. , Xu C. , Xun M. , Wang J.
Published: March 2015

We have designed and fabricated 1×2 VCSEL arrays with different inter-element spacing. Then, through the measurement of the near-fields and far-fields of the VCSEL arrays, the in-phase and out-of-phase mode depending on the inter-element spacing have been analyzed. Finally, the simulated far-field profiles by FDTD Solutions software agree well with the experiments.
Design and Implementation of a Portable TT&C Test Equipment for Small Satellite
Authors: Cao L.J. , Zeng H. , Chen X.
Published: March 2015

This paper describes the design and implementation of the portable TT&C test equipment for small satellite. Now small satellites propose the idea of a quick test. For meeting requirement of the quick test, portable TT&C test equipment is proposed. The equipment takes full advantage of the current modular design technology, test bus technology, virtual instrument technology etc. It overcomes the disadvantage of traditional test equipment integrated difficulty, which is caused by traditional discrete and variety devices. The equipment has the advantages of scalable, flexible upgrade, compact, portable. After the experimental validation applied in the satellite test, it achieved good results. So it is important for test technological development of small satellite.
Simulation of Golf Realtime Tracking Based on Doppler Radar
Authors: Li Bing , Sun Bing , Chen C.F. , Jiao X.J. , Zhang S.Y. , Wang Ye
Published: March 2015

Golf has become an increasingly popular sport. Determination of motion parameters of golf
ball can give quantitative suggestion for players. This paper introduces the principles of determination
based on Doppler radar. The parameters of golf motion to be measured include velocity, angle, spin
angular velocity and position. A golf realtime tracking system is designed with one transmitting antenna
and three receiving antennas in this paper. Simulations validate the feasibility and high accuracy
of this system. This system makes referential significance for golf realtime tracking system.
Design of Fault Diagnosis Instrument of a Certain Type Laser Range Finder
Authors: Wang Zai Yuan , Zeng Wen Feng , Liu Shi Yao , Wang Li Tao
Published: March 2015

After analyzing the circuit features, generalizing the typical faults, and combining the experience of maintenance, a design of fault diagnosis instrument based on the fault dictionary method was proposed to solve the problem of the complex and difficult maintenance tasks in troops of a certain type laser range finder. First, fault subsets were sorted out by circuit function. Second, the signals for detecting the circuits were generated by MCU and the key points were tested. Last, fault dictionary was written according to the fault phenomena and test results. The tryout result indicates that the fault diagnosis instrument can rapidly diagnose the function of the laser range finder and its circuits, and remarkably improve the efficiency of equipment maintenance.
Development of a Three-Dimensional Modeling Method for Monitoring Overall Foundation Pit Deformation Based on Terrestrial Laser Scanning
Authors: Xie X.Y. , Zhu K.W.
Published: March 2015

Concrete diaphragm wall is widely used in deep foundation pit projects in city. Its lateral deformation is an important item in the deformation monitoring of the retaining structure of foundation pit. Traditional monitoring techniques for concrete diaphragm wall deformation collect data only from several sections, failing to understand the overall foundation pit deformation. Taking the north pit of Huaihai road station on Shanghai Metro Line 13 as an example, this study measures overall deformation by means of terrestrial laser scanning. Methods of data collection and data process will be introduced. A three-dimensional modeling algorithm using point cloud data of foundation pit is proposed so that the overall model of the concrete diaphragm wall can be got. And finally the overall deformation can be got by comparing the model of different periods.
Vibration Propagation Law in Different Areas of Tunnel Face Caused by Blasting
Authors: Shi Jian Jun , Xue Li , Zhang Qi , Meng Hai Li
Published: March 2015

According to the position and role of borehole, the tunnel face is divided into three regions undercutting area, auxiliary area and surrounding areas and each region have different blasting vibration attenuation law. Using blasting vibration testing instrument TC-4850, the vibration caused by blasting excavation in different region of Chongqing terminal connecting line tunnel was monitored and analyzed, and the vibration characteristics and attenuation law of different region in tunnel face were gained. The results show that: the maximum blasting vibration value was produced in cutting area of tunnel; using the partial excavation and setting large diameter hollow hole in the cut area can effectively reduce the blasting vibration, and the more the number of hollow hole, the damping effect was more significant; vibration attenuation parameters were different in different blasting area in tunnel face and with the increase of excavation area, the vibration attenuation coefficient was gradually decreased. Vibration attenuation index was determined by the geological conditions, basically unchanged, the value of the auxiliary area was 0.5~0.67 times the cutting zone, the value of the surrounding area was 0.25~0.33 times the cutting zone. When adopting sub-steps and sub-regional excavation in small spacing tunnel of Chongqing area, vibration attenuation coefficient can be valued by cutting areas 110~120, auxiliary area 60~80, surrounding region 30~40 and vibration attenuation index can be valued by cutting area 1.5, auxiliary and surrounding region 1.6.
Experimental Study of Seismic Performance of Precast Fabricated Integration Shear Wall
Authors: Zhai Xi Mei , Hu Wen Bo
Published: March 2015

A new method to infill the opening in the precast fabricated concrete shear wall was applied in China. In this paper, three geometrically identical precast fabricated shear wall specimens were constructed and tested under constant axial load and quasi-static cyclic lateral loading. The only difference among three specimens was the methods to infill the opening in the middle, the methods were respectively integration infill, masonry infill and without infill. The hysteretic curves, the skeleton curves, the failure process, the strain variation of reinforcement, the stiffness, the ductility and energy-dissipating capacity were obtained. The results and analysis showed that integration shear wall owns good seismic performance. Its bearing capacity, stiffness, energy-dissipating capacity are excellent while ductility is relatively poor. Masonry infilled wall and wall without infill also own good seismic performance.
Simulation Analysis of Bidirectional Fluid-Solid Coupling for Hydrodynamic Coupling
Authors: Ma Wen Xing , Shen Xiao Wen , Lu Xiu Quan , Ji Long Fei
Published: March 2015

In this paper, bi-directional fluid-solid coupling numerical analysis method was introduced into the structural design of hydrodynamic coupling, this method was adopted to simulate the impeller strength and analyze the dynamic characteristics of the turbine blades, as well as the influences of turbine blades deformation the inside flow filed of hydrodynamic coupling was discussed. The work provides a theoretical basis for the design of the hydrodynamic coupling with the great power and high speed.
SMS-2D Simulation Meandering River Flow and Scouring Depth – Laishe River in South Taiwan as an Example
Authors: Cheng Kuei Hsiang , Lin Chih Hsien , Chao Cheng , Wu Meng Ju
Published: March 2015

Due to the narrow island, topography and climatic factors and steep river bed erosion affecting in Taiwan, Laishe River in Pingtung County for example in this study, flow field simulating river change in bend-shaped section by SMS-2D in order to calculate accelerating erosion in the main deep grooves caused by reflecting force due to construction of the revetment protection, further evaluate the project footings erosion failures, is to verify the correctness of erosion equation simulation in the flow field, thus, providing reliable information and references for hydraulic engineers.
The Prediction of the Water Inflow by Numerical Simulation Methods of Huijiabao Mine, Guizhou Province
Authors: Li Chen Chen , Xu Shi Guang , Ba Jun Jie
Published: March 2015

The mineral resources in our country is variety and huge reserves, but there are still many problems in the mining process. Among the problems, the water burst and water inrush are much more prominent. Through full and comprehensive analysis of previous studies collected data and laboratory data and field investigations, based on the long-term observations of the natural state steady groundwater flow of Huijiabao mine, and the unsteady groundwater flow of the pumping tests in Changtian well, and other tests, Combined with the actual production situation, it predicted the water inflow on the 1000 meters level of Huijiabao mine of Guizhou Province by numerical simulation methods to provides the safety production of mining.
Erosion Mitigation Using Submerged Breakwater Composed of Artificial Reefs
Authors: Kim Kyu Han , Shin Bum Shick
Published: March 2015

In this study, erosion mitigation by submerged breakwater with artificial reefs is investigated among other means of countermeasures. Beach erosion mechanism near the submerged breakwater and the performance of artificial reef blocks are analyzed in the laboratory. Two-dimensional and three-dimensional laboratory experiments are applied to the analysis. The results of two-dimensional experiments prove that new artifi-cial blocks showed a better performance than the existing blocks in terms of wave attenuation due to wave breaking turbulence near the crest of the structure. Three-dimensional experiments show reduced return flow velocity by half by installing another type of new artificial block in between submerged breakwaters. Return flow has been creating vulnerability in countermeasures by submerged breakwater. Therefore, artifi-cial reef blocks suggested by this study offer solutions to the existing mitigation problems with submerged breakwater.
The Numerical Analysis of Earth Pressure on Bucket Foundation Breakwater
Authors: Wang Zhi Yun , Ma Xiao Long , Shen Lu , Lu Jing
Published: March 2015

As a newly developed engineering structure, bucket foundation breakwater is adapted to soft soil. In this paper, the general-purpose finite element analysis package ABAQUS is employed to conduct three-dimensional numerical analyses on bucket foundation breakwater. Then earth pressure variation on bucket foundation is carried out under different loads of horizontal displacement. Through analysis it obtains the laws of the earth pressure on the meeting-wave side and the back-wave side of bucket foundation breakwater. This will provide the reference and the evidence of preliminary theory for the stability research and practical engineering application of bucket foundation breakwater.
Destructions on the Karakoram Highway (KKH) from Sost to Khunjerab Induced by Geo-Hazards and Prevention
Authors: Ge Yong Gang , Su Feng Huan , Chen Xiao Qing , Zhang Jian Qiang
Published: March 2015

The Karakoram Highway (KKH), from Islamabad of Pakistan to Kasha of China, passed through the junction areas of the mountains of Karakoram, Himalaya and Hindu Kush and suffers serious destruction of different geo-hazards. This work analyzed distribution and characteristics of geo-hazards, including debris avalanches, rock falls, debris flows, landslides and flash flood along Khunjerab River from Sost to Khungerab and their destructions on KKH(K726~K821). These geo-hazards are commonly initiated by intensive rainfall and melting of glacier and snow, and numerously occurred, especially debris avalanches, rock falls and debris flows, to seriously destruct highway and frequently interrupt traffic. The destructions of highway mainly came from the burying of landslides, debris flows and debris avalanches, the scouring of debris flow and flash flood, the submerging of dammed lakes induced by debris flows and landslides as well as the breaking of rock falls. After analyzing the lessons and experience of geo-hazards mitigating and highway protecting since 1970s, the measures of hazards mitigating, including identifying potential hazard sites,controlling and disposing rock falls in time,integrated controlling debris avalanches, debris flows, landslides and flash flood, establishing emergency treatment plans for hazard chain and founding hazards alarming and highway safe protecting system, are strongly suggested for highway protecting and traffic security.
Durability Prediction of Asphalt Mixture under Freeze-Thaw Cycle Based on GM (1,N) Grey Model
Authors: Xiong Rui , Wang Lu
Published: March 2015

In order to predict the durability of asphalt mixture under freeze-thaw cycles, the porosity and splitting strength of asphalt mixture under freeze-thaw cycle are studied, and GM(1, N) model in grey system theory is established. The results show that there is a good correlation between the porosity and the splitting strength in the durability factors of asphalt mixture. The value of the porosity increases with the increasing of the freeze-thaw times, and the value of the splitting strength decreased with the increasing of the freeze-thaw times. The GM(1, N) grey forecasting model can predict the porosity and the splitting strength well, and the calculated results agree well with the experimental data. Therefore, it is feasible to introduce the grey system theory in the prediction study of the durability of asphalt mixture.
Mechanical Effect Study of the Vehicle Braking on the Asphalt Pavement
Authors: Jin Wei Dong , Liang Chun Yu , Gao Xue Kai , Zhang Peng
Published: March 2015

This paper established a three-dimensional model of asphalt pavement by finite element analysis method, studied the effects of vehicle braking on the asphalt pavement, and analyzed the mechanical law of asphalt pavement through comparing the stress of pavement asphalt when the vehicle is in uniform motion or braking condition. The results show that the vertical stress, vertical displacement and horizontal shear stress of the asphalt pavement increase significantly while the vehicle is under the braking condition. In every asphalt pavement structure layer, the maximum horizontal shear stress under vehicle braking condition are all about four times to that of under vehicle uniform motion, so it’s necessary to significantly improve the shear strength of the asphalt pavement in these sections which often bear automobile braking force.
Program Design of Soft Foundation Treatment for an Accommodation Highway
Authors: Song Bi Hong , Wang Chun Ming , Chen Jian Hua , Han Cong , Zhu Wei Wei
Published: March 2015

Survey data show the problem of weak foundation existing in an accommodation highway. There are many methods to treat the soft foundation, and different methods have different expenses, effects and construction periods. Through the deep comparison of four foundation treatment programs, dynamic compaction method is taken for the design, and the detection result shows that the treatment effect reaches the engineering requirements.
The Introduction and Application of Cohesive Zone Model on Asphalt Concrete Fracture Behavior
Authors: Zhang Hua , Zhang Hai Wei , Su Feng
Published: March 2015

The cohesive zone model (CZM) is being increasingly used to simulate fracture and fragmentation processes in metallic, polymeric, and ceramic materials and their composites. The CZM regards fracture as a gradual phenomenon in which separation takes place across an extended crack tip. This paper introduces the concept of CZM, the constitutive relations of CZM, the influence of the shape of the interface law and up-to-date applications of CZM to bituminous mixtures and pavement structures. Furthermore, some current challenges and the future directions to the modeling of fracture in bituminous materials and pavements are briefly discussed.
Thorough Investigation of Constitutive Model of Asphalt Pavement Permanent Deformation
Authors: Zheng Rui
Published: March 2015

In this paper, the constitutive model of the asphalt pavement permanent deformation is analyzed, which is based on the asphalt pavement permanent deformation. In order to reasonably predict the asphalt pavement permanent deformation, the domestic and foreign research results are thorough investigated. It shows that the nonlinear viscoelastic - elastoplastic constitutive model of Peng Miaojuan improves the defects of various models. This constitutive model comprehensively reflects the characteristics of permanent deformation of asphalt pavement.
Preliminary Investigation of Influence Factors of Sideway Force Coefficient Using SCRIM
Authors: Hu Chun Hua , Yu Fang
Published: March 2015

In this paper, advantages of the Sideway Force Coefficient Routine Investigation Machine (SCRIM) are analyzed for testing the Sideway Force Coefficient (SFC). Then influence factors are explored such as environmental conditions (test speed, test temperature, bumps degree) on the SFC test value. Furthermore some suggestion are put forward for SCRIM testing SFC value, and the safety precautions are emphasized on what drivers should pay more attention.
Dynamic Mechanical Properties of Epoxy Resin with Multifunctional Polyamine Curing Agent
Authors: Wang Xi
Published: March 2015

A nonlinear multifunctional polyamine N,N,N’,N’-tetra (3-aminopropyl)-1,6-diamino-hexane (TADH), was prepared and employed as a novel hardener for diglycidyl ether of bisphenol A (DGEBA). Nonisothermal reactions of DGEBA/TADH were systematically investigated with differential scanning calorimetry (DSC). In addition, analysis of thermal stability of the cured DGEBA/TADH with thermogravimetric analysis (TGA) revealed that it possessed quite good thermal stability and increased residual char content at 600◦C in nitrogen. Furthermore, dynamic mechanical analysis (DMA) of the DGEBA/TADH network showed its relaxations were characterized by localized motions of hydroxyl ether segments and cooperative motions of whole network chains (glass relaxation) at different temperature regions.
General Analysis on Green Building Materials and Development in China
Authors: Ren Hai Yang , Wang Shun , Wang Chuan
Published: March 2015

Starting from the development of building materials, expounds the definition and connotation of green building materials, this article analyzes the development of domestic green building materials from the building materials and recycled materials and technology two aspects, and then points out that the development of green building materials in China still has a long way to go.
Influence of the Water-Resisting Property and Impermeability of Mortar by Four Kinds of Common Modifiers
Authors: Zhang Sheng Ju , Wang Xin Gang , Liu Qing Song
Published: March 2015

The effects on the waterproofness, the flexural and compression strength of cement mortar were investigated under single mixing and complexes mixing conditions of 4 kinds of modifiers, Polycarboxylic water-reducing agent, composite waterproofing agent, Sulphoaluminate expansion agent and fly ash. The results show that it is better in improving the water-resisting property and impermeability of mortar when complexes mixing any two of the 4 kinds of modifiers than single mixing. The mortar has the best water-resisting property and impermeability with the contents of 0.75% Polycarboxylic water-reducing agent and 6% composite waterproofing agent.
Research on Synthesis and Properties of a Flexible Epoxy Curing Agent
Authors: Wang Xi
Published: March 2015

This paper presents the synthesis of a new type of flexible epoxy curing agent and an approach to improve the toughness of epoxy resin by curing without reducing the strength and modulus of the resin-cured material. The results show that the degree of toughness reaches maximum values when the flexible curing agent is applied at weight percentages (wt.%) between 10% and 15%. When the amount of flexible curing agent added to epoxy resin weight is 10wt.%, the impact toughness and fracture toughness increases by 33.3% and 96.3%, respectively, compared with the pure epoxy resin. When the amount of flexible curing agent added to epoxy is 10wt.%, the resulting impact thoughness of the material is 19.5 kJ•m-2 at-50°C, the impact toughness of pure epoxy resin is only 7.96 kJ•m-2.
Study of the Volume Deformation and Stress Development of Concrete Influenced by the Different Cooling Rate
Authors: Fang Yi , Song Xue Feng , Chen Long
Published: March 2015

This paper studied the development of stress and strain influences by different cooling rates based on the concrete thermal stress tests. furthermore, discussed the temperature control measures for early concrete placement.
The Influence of Carbonization on the Performances of Fly Ash Geopolymeric Concrete
Authors: Huang Qi , Shi Xiaoshuang , Wang Qingyuan , Tang Ling
Published: March 2015

Two mixtures were designed to manufacture ordinary Portland cement concrete (PCC) and alkali-activated fly ash geopolymeric concrete (FGC). The depth of carbonation at 3rd,7th,14th and 28th day were measured according to the carbonization test method in “Ordinary Concrete Long-term Performance and Durability Test Method Standard”(GB/T 50082-2009) by spotting with phenolphthalein solution. The changes of compressive strength of the specimens carbonized with different days were tested and compared, as well as the pH value of specimens’ surfaces. Furthermore, the changes in microstructure and chemical composition were observed through the scanning electronic microscope (SEM) and energy dispersive X-ray spectrometer (EDX), respectively. The results show that although the compressive strength of FGC decreased significantly at first, but there is no obvious effect of carbonization on compressive strength, pH value and chemical composition of FGC as carbonation going on. Moreover, the microstructure of FGC is more homogeneous and denser. It can be concluded that compared with PCC, carbonization resistance of FGC is much better.
Free Vibration Analysis of Two Types of Conical Springs
Authors: Jin Guang Can , Liu Hao
Published: March 2015

In this paper, a free vibration analysis of two types of conical springs is presented by using ANSYS software. The APDL programming is employed for the finite element modeling. Two types of conical springs, such as constant pitch and constant pitch angle, which are not distinguished in previous researches, are investigated. The results suggest that the two types of conical springs should be distinguishable in the dynamic applications.
Optimal Design of the Lighting Atrium Form in the Building
Authors: Dong Hai Rong , Qi Shao Ming , Xu Kai
Published: March 2015

The unique atrium space design brings different visual perception to people, and rational atrium structure has a good influence on natural lighting and energy consumption. The lighting atrium has been widely used in public buildings. This paper aims to optimize the atrium design of public buildings. Some factors such as atrium aspect ratio, light transmission coefficient of the glass and atrium shape etc, were probed in through numerical simulation, which analyzes lighting influence of various lighting atrium forms. On this basis, this paper draws some conclusions, such as daylight factor of atrium space distribution characteristics and its relevance of atrium space geometry, proposes some optimization strategies of architectural lighting atrium, try to provide some guidance in the atrium application of public buildings.
Research on the Prediction of Impact Sound Insulation to a Homogeneous Wall
Authors: Wei Shang You , Huang Xian Feng , Zhuang Zhi Xiang , Lan Jun Xin
Published: March 2015

In this paper, a theoretical model to evaluate impact sound transmission through a homogeneous wall is proposed. The model which is based on the Statistical Energy Analysis framework exhibits a system with room-wall-room. For the purpose to explore the mechanism of impact sound transmission through a wall, the impact sound reduction index between two rooms are predicted. Meanwhile, the variation of impact sound reduction index with the walls properties are also taken into account. The results reveal that the density, elastic modulus and thickness of a homogeneous wall have diverse effects on its impact sound insulation and can be chosen adequately to achieve ideal insulation values.It provides an approach to optimize impact sound insulating properties of the walls.
Application of Geographic Information System on Urban Residential Real Estate Mass Appraisal
Authors: Tian Yuan , Yang Jian Ping
Published: March 2015

Real estate mass appraisal is the key preliminary work of imposing real estate tax in urban area.Various methods have been used for real estate mass appraisal,among which geographic information system(GIS) is a powerful method to improve the efficiency due to it’s capacity of spacial analysis and management.This article tries to explore the combination of GIS and Hedonic model,and uses GIS spacial analysis function to quantitative analysis influencing factors of real estate.At last we have a real estate mass appraisal practice on Xi’an,the result shows it is feasible and efficient to apply GIS in urban residential real estate mass appraisal.
Comparative Study of the Loads Acting on the Operating Cardanic Transmission in the Closed and Open Loop Configurations
Authors: Avrigean Eugen
Published: March 2015

On the basis of a comparative study, this paper aims to determine the maximum loads that can occur in operating conditions on the cardanic transmission assembly of motor vehicles in the open or closed loop configurations. The research is conducted under static conditions using finite elements and shows the components with their maximum values obtained in normal operating conditions.
The Design and Implementation of GIS Platform Based on 2D-3D Linkage
Authors: Yu Ming Yang , Zhao Liang , Shi Tong Guang
Published: March 2015

This paper describes the collection and processing of campus images and textures imaging data then resulting into the vector data of campus. Importing vector data into CityEngine software then using CityEngine to model objects on campus. Finally, based on the 3D model, using general software developing kits Microsoft Visual Studio 2010 as the developing platform and employing C# language combining the ArcObjects to make the two objects’ integrated development. Realizing roaming, querying and analyzing etc. Of 2D-3D linkage and greatly enhancing the the intuition and convenience of the campus information management.
The Study of the Topography-Measure Applied in China's Southwest Precipitous Areas a Case Study in YunDian Village HuiLi County in LiangShan Autonomous Prefecture
Authors: Li Jia Na , Zhang Kun
Published: March 2015

Since the area of Southwest China crosses the first ladder and the second one ,thus it is featured with precipitous terrains. Owing to such complex factors as deep valleys, steep mountains, varied topography and complex geological structures, it is extremely hard for people to obtain exact leveling data about this area. Therefore ,it is necessary to summarize the geodetic datum and tech of Southwestern mountainous areas, which can be of great reference value for the research of the similar places with regards to its hydrology, geology, geological structure and ground. At the same time this essay will contribute to the study of geological disaster such as earthquake ,landslide and debris flow.
Risk Evaluation of Water Inrush from Coal Floor Based on BP Neural Network
Authors: Liu Wei Tao , Liu Shi Liang , Sun Yan Shuang
Published: March 2015

According to the nonlinear dynamic characteristic of coal seam floor water inrush, coal seam floor water inrush risk evaluation which includes 4 first level indicators,14 level two indexes was built based BP neural network. According to the test collection of engineering data, coal seam floor water inrush risk evaluation system based VB and MATLAB is reliable. Application to a mine coal seam No.2 working face was verified. The results show that, the evaluation method in water inrush is feasible, reasonable.
Study on Rainfall-Induced Loess Geological Hazards Characteristics and Preventive Measures in Shanxi Province
Authors: Qi Qiong , Ju Yu Wen
Published: March 2015

Shanxi is one of the typical loessial areas in China, accompanied by plenty of loess geological disasters induced by rainfall. Based on the survey and compartment of geological disasters in the area, the geological conditions of them have been obtained by anglicizing the landslide, the mud-rock flow and dilapidation that have occurred. What’s more, the geological conditions, growing characteristics, and distribution law of these geological disasters induced by rainfall were summarized. On that basis, targeted preventive measures were put forward. These will provide reliable support to loess geological disaster warning work and to confirm the mechanism of hazard forming study.
Allocation Plan of Night Trains on Beijing-Guangzhou High-Speed Railway
Authors: Sun Shi Zhao , Han Bao Ming , Zhang Qi , Liu Xuan
Published: March 2015

The night train was greatly welcomed by the market because of its advantages of excellent arrival-departure time, comfortable and time saving. Now, with the development and perfection of national high-speed rail network, the basic condition of operating night train on high-speed railway has been provided. This article analyzes the adaptability of night trains running on the Beijing-Guangzhou high-speed railway based on condition of vehicles and servicing depots along the way and then puts forward correlated suggestions. Based upon the operation scheme date of night trains on Beijing-Guangzhou high-speed railway, the allocation plan of night train has been studied under the existing system of railway management in our country, which has the certain realistic directive significance to practical application.
Bus Priority Network Design Based on Bi-Level Programming
Authors: Mo Yi Kui , Wang Kai , Lv Shen
Published: March 2015

This paper analyzes the steps and difficulties of bus priority network design, including the bi-level characteristics of problems related to bus priority network design. Based on that, a bi-level model with the maximization of the overall bus transportation efficiency as the upper level and the minimization of bus passengers’ cost as the lower level is established and the solution algorithm of the model is studied.
Research on Multimodal Transport Shortest Path Based on the Genetic Algorithm
Authors: Ji Shou Wen , Jin Shi , Lv Kai
Published: March 2015

This paper focuses on the research of multimodal transportation optimization model and algorithm, designs an intermodal shortest time path model and gives a solution to algorithm, constructs a multimodal transport network time analysis chart. By using genetic algorithms, the transportation scheme will be optimized. And based on each path’s code, the population will be evolved to obtain the optimal solution by using crossover and mutation rules.
An Ensemble Model of Short-Term Traffic Flow Forecasting on Freeway
Authors: Xiang Hong Yan , Shu Hong Ling
Published: March 2015

This paper puts forward an ensemble model based on uncertainty simulation and multiple model combination for short-term traffic flow prediction. Firstly, the initial condition of traffic flow be simulated by using a normal distribution, which makes a better description of the real traffic flow situation. Secondly, an ensemble prediction model with different types of prediction methods has been presented in order to catch any possible change of trend in the traffic flow. In the ensemble model, In order to improve the prediction accuracy, this paper put forwards an equivalence test and dispersion adaptability test for choosing the most effective methods in the ensemble system. Finally, a case study be given to show the performance of the ensemble model. Predication result shows that this model has a good performance with freeway traffic flow, It is capable of providing more detail about the traffic volume, it provide mean value and standard deviation value of traffic volume in the next period, which is most important information for traffic managers and travelers.
Study on Location Selection of FMCG Logistics Centers Based on Fuzzy MCDM Model
Authors: Yang Yang , Fan Jun Yan , Zhang Ling Rui
Published: March 2015

To reduce logistics costs and enhance operation efficiency, selecting a suitable logistics center location has become a very important issue for manufacturing, sales and logistics industries. The selection of logistics centers is a most important decision owing to the need to consider various criteria that involve a complex decision process in which multiple requirements and uncertain conditions have to be taken into consideration simultaneously. In this paper, we propose a multiple criteria decision-making (MCDM) model based on fuzzy-set theory. And it is applied to the evaluation and selection of logistic centers. In the model, quantitative and qualitative criteria as well as the different importance weights of all the criteria are considered. A FMCG logistics center location example is used to elaborate how to use this model; meanwhile, the method is proved more scientific and reliable.
The Design of Closed-Loop Supply Chain Network
Authors: Dai Zhuo
Published: March 2015

This paper designs a model of muti-echelon closed-loop supply chain network (CLSC network). CLSC network includes raw material suppliers, manufacturers, distribution centers, collection centers and customer zones. The purpose of this paper is to minimize the overall costs of CLSC network. The overall costs include transportation cost, fixed cost, variable cost, penalty cost. This model is a mixed integer linear programming model. In general, it is very difficult to solve the model. Cplex12.6 is used in order to deal with this model. The results show that this model can be solved by Cplex12.6 well.
3G Network Mobile Vehicle Tracking and Positioning Systems Research
Authors: Xu Yan Wen , Dong Feng
Published: March 2015

To strengthen and improve the movement of cars in real-time location tracking to monitor in order to improve operational efficiency and ensure traffic safety of the vehicle is particularly urgent, global system for mobile communication system GSM (Global System of Mobile communication) has been developed to the 3G era and geographic information systems GIS (Geographic Information System) of rapid development, so that based on GPS / GSM tracking feasibility sports car positioning monitoring system design is growing. In this paper, GPS / GSM mobile vehicle as the monitoring terminal hardware platform combined with GIS positioning tracking and monitoring center software design in VC ++ environment, in order to reduce the GPS module positioning error, system application Kalman filter algorithm for GPS data filtering to increase GPS the positioning accuracy.