bluuebunny/crossref_metadata_2025 huggingface dataset:
A Method of Bridge Outline Extraction Based on Airborne LiDAR Data
Authors: Zheng Yi , Wang Cheng Yi , Chen Jing Bo , He Dong Xu
Published: March 2013

Automatic and quickly extraction of bridge information from LiDAR data is of great significance in building 3D digital city and virtual earth. Especially the extraction of bridge outline is a crucial problem. It is a concern of many scholars research focus. This paper presented a method of bridge extraction using airborne LiDAR data. The biggest advantage of the method is based on priori-knowledge and by analyzing the spatial structural characteristics and geometric characteristics of the bridge. Experiments show that this method has a good accuracy compared with the result of expert interpretation.
Method of Footprint Image Stitching Based on Multiscale SIFT Feature Matching
Authors: Wang Sen , Zhang Yin Hui , Shi Zhong Hai , He Zi Fen
Published: March 2013

The image stitching method is widely used into the suspect's footprint information extraction. In order to improve the image detail and the matching precision, the Footprint map image stitching method which is based on the wavelet transform and the SIFT feature matching is put forward. The wavelet transform in this method is perform based on the pretreatment of image, move the low frequency wavelet coefficient to zero, adjusting thresholds of the high frequency wavelet coefficient and inverse transformation, then, use the SIFT to extract and match the key-points of the processed images. For the error matching pair of coarse match, you can use the RANSAC to filter them out. This article demonstrates its advantage through to the original image splicing comparisons. The experimental results show that the method display more clear detail and the precision of matching than the original method.
Research on Classification of Gait Signal Based on Neural Network
Authors: Yin Jing
Published: March 2013

To effectively recognize gait signal between healthy people and patients with Parkinson, a gait signal recognition model is established based on neural network of error back propagation (EBP), and a method is proposed to effectively extract characteristic parameters. In this paper, coefficient of variation is applied in the research of gait-pressure multi-characteristic parameters through gait-pressure signal, and the neural network model can automatically recognize gait-pressure characteristics between healthy people and patients with Parkinson. This can contribute to the recognition and diagnosis of patients with Parkinson. Experiment results show a recognition rate of 90%.
Data Mining in Blast Furnace Smelting Parameter
Authors: Yu Fu Xing , Suo Yi Na , Zhang Xin , Yan Ai Ding , Liu Fu Long
Published: March 2013

In this paper, data mining methods are used in the blast furnace production control . firstly introduces some main clustering algorithms.Then clustering analysis of blast furnace operation parameters is carried out by K-Means Clustering. Analysis and comparison of practical data is conducted to determine the optimal cluster number of this algorithm for blast furnace parameters analysis, and thus yield the ideal operating value for the parameters. The optimal threshold for blast furnace parameters is determined through statistical analysis, repeated experiments and field assessment, and the difference between blast furnace state as estimated and the practical one analyzed. Finally, the factor analysis method to reduce the dimension of parameters. Mining test in data of tangshan iron&steel shows that the method is effective in practical application.
Damping Ratio and Frequency Identification Based on Particle Swarm Optimization
Authors: Zhou Fei Hong , Liao Zi Zhen
Published: March 2013

This paper proposes a novel approach for structure modal parameter identification. The approach changes the identification problem to an optimal one. The global optimal solutions for the required parameters, including frequency, damping ratio, amplitude and phase of the structure can be obtained by taking the advantage of the Partical Swarm Optimization. The results of numerical simulation studies showed that the accuracy of this method is comparatively higher, and the adjacent modal coupling has no effect on its accuracy. The FIR lowpass has effect on the phase’s identification.
A Research on the Fuzzy Control with Genetic Algorithm for Maximum Power Point Tracking of Photovoltaic Power System
Authors: Dai Yi Zong , Miao De Jun
Published: March 2013

Based on the nonlinear of the photovoltaic device output power and the frequent changes in the work environment, a fuzzy controller with genetic algorithm was applied to maximum power point tracking (MPPT) of photovoltaic generation system. The problem of difference in the different interval of the maximum point was solved. It ensure that the system has a higher accuracy .By comparing the method of the fuzzy control and the method of fuzzy control with genetic algorithm through simulation , the result demonstrates the better control effect.
An Improved Design for PID Controller Based on Viere Theorem
Authors: Xu Zhi Yi , Zhang Xiang Jun , Liu Zhen
Published: March 2013

The paper proposes a new method based on the Viere theorem to decide the range containing the optimal parameters. The method can accelerate the parameters search speed on the computer and avoid some unnecessary job for PID controller design. It can be acted as a criterion to judge the stability of the closed loop system.
Equivalent Model and Maximum Wind Power Tracking Control Mechanism of Grid-Connected PMSWG
Authors: Liu Jian Ye , Li Yun Shan , Gu Xiao , Li Chun Miao
Published: March 2013

Based on the speed control system of grid connected direct-drive wind permanent magnet synchronous generators, it is proposed and built up that boost chopper generating equivalent as the model of DC generator. Analyzing the dynamic process of the boost chopper generating equivalent as DC generator, it reveals the relationships between intrinsic variables and puts forward that increasing boost chopper control duty ratio D, namely, increasing the energy storage time of inductance L, and reducing released energy time relatively, it will increase the armature current of the generator, otherwise, it will reduce the current in the current continuous situation. At the same time, according to the principle of maximal wind energy tracking, the paper reveals the control mechanism of maximum wind power tracking of the wind generators. A theoretical basis is provided for the realization of the control of the wind power maximum wind energy tracking.
Study on Lead Zirconate-Titanate/Interpenetrating Polymer Network Composites
Authors: Qin Chuan Li , Feng Qian , Jiang Hai Jian , Bai Xu Duo
Published: March 2013

In order to improve damping properties of polyurethane/vinyl ester resin interpenetrating polymer network (PU/VER IPN), a series of Lead Zirconate-Titanate/IPN (PZT/IPN) composites were prepared by adding PZT into PU/VER IPN by in-situ polymerization process and were polarized. The optimal polarization process is obtained. The influence of PZT contents on microstructure, damping performances, mechanical performances, relative dielectric constant and piezoelectric constant (d¬33) was studied. The results show that PZT particles disperse in composites uniformly. The optimal polarization parameters of PZT/IPN composites are as follows: polarization temperature 100°C, polarization field strength 6kV/mm and polarization time 40min. Mechanical loss tangent (tanδ) values of the optimal PZT/IPN composites with 75 wt.% PZT are higher than 0.3 from –31°C to higher than 120°C, which meets the requirement of damping materials with excellent performances.
Variable Structure Control for Moving Mass Actuated Reentry Vehicles
Authors: Yao Man
Published: March 2013

Dynamic equations of an axisymmetric moving mass actuated reentry vehicle, which was in the state of tri-channel stability, were derived in this paper, and the linear dynamic equations in longitudinal plane were obtained. Then variable structure control method was applied to control the moving mass actuated reentry vehicle. The simulation results indicate that the controller is of satisfactory performances in the nonlinear system.
An Application of Radio Frequency Identification (RFID) Based on Time Series Modeling in Electrode Foil Stereoscopic Warehouse
Authors: Ning Hong , Zheng Xue Feng
Published: March 2013

The radio frequency identification (RFID) based on time series modeling were introduced into electrode foil stereoscopic warehouse for increasing the working efficiency. The aluminum foil, etched foil and the formed foil, which were the materials in stereoscopic warehouse, could be expressed as time series formation in order to find the right foil volume precisely in the shortest time.
Centralized Control System of Emergency Communication Commanding Vehicle Based on Web2.0
Authors: Cheng Ke Fei , Xie Wan Fu , Chen Chang Zhi
Published: March 2013

As the shortcomings of traditional Web mode’s real-time systems, such as bad user experience, high delay and low response, this paper studies Ajax technology and Web mode, using the technology combining with Web2.0 and Comet to make the on-board emergency communication system faster and more flexible. The composition of the system’s hardware and software are designed and implemented in this paper. The experiment shows that using Web2.0 technology can provide good flexibility, scalability, flicker-free, quick response and high real-time quality, when it adapts to the basic function of the emergency communication system.
Fault Diagnosis Research of Hydraulic Excavator Based on Fault Tree and Fuzzy Neural Network
Authors: Li Guo Ping , Zhang Qing Wei , Xiao Ma
Published: March 2013

Directing to the dispersiveness and faintness failure characteristics of hydraulic excavator, the fault diagnosis method was presented based on the fault tree and fuzzy neural network. On the basis of analysis of the hydraulic excavator system works, the fault tree model of hydraulic excavator was built by using fault diagnosis tree. And then, utilizing the example of hydraulic excavator fault diagnosis, the method of building neural network, obtaining training samples and neural network learning in the process of intelligent fault diagnosis are expounded. And the status monitoring data of hydraulic excavator was used as the sample data source. Using fuzzy logic methods the samples were blurred. The fault diagnosis of hydraulic excavator was achieved with BP neural network. The experimental result demonstrated that the information of sign failure was fully used through the algorithm. The algorithm was feasible and effective to fault diagnosis of hydraulic excavator. A new diagnosis method was proposed for fault diagnosis of other similar device.
A Particle Swarm Optimization Algorithm
Authors: Zhou Fei Hong , Liao Zi Zhen
Published: March 2013

The basic and improved algorithms of PSO focus on how to effectively search the optimal solution in the solution space using one of the particle swarm. However, the particles are always chasing the global optimal point and such points currently found on their way of search, rapidly leading their speed down to zero and hence being restrained in the local minimum. Consequently, the convergence or early maturity of particles exists. The improved PSO is based on the enlightenment of BP neural network while the improvement is similar to smooth the weight through low-pass filter. The test of classical functions show that the PSO provides a promotion in the convergence precision and calculation velocity to a certain extent.
Facial Feature Detection Algorithm Based on Main Characteristics of Eyes
Authors: Wang Chang Yuan , Qu Mei Juan , Jia Hong Bo , Bi Hong Zhe
Published: March 2013

This paper proposed a new facial feature points localization algorithm based on main characteristics of eyes.Use the result of pupil center position to initialize the model of hybrid improved active shape model (ASM) and active appearance model (AAM). The algorithm will use two-dimensional local gray information to update the feature point position when using ASM to locate the face contour feature points. As to the internal features point location, it establishes facial organs independent AAM model. At the same time, it optimizes measure functions of ASM and AAM to judge the convergence of search algorithm. The experimental results show that the new algorithm greatly improved the localization accuracy of facial feature points.
DV-Hop Localization Algorithm in WSN Based on Weighted of Correction in Hop Distance
Authors: Yu Cheng Bo , Yu Lei , Tan Jun , Li Rui , Xiao Dan , He Qiang
Published: March 2013

Because of the DV-Hop algorithm has a big error in the estimation of the average hop distance, this paper proposed a weighted hop distance correction localization algorithm. The improved algorithm is carried out by introducing the average hop distance error correction value of the weighting processing, thereby reducing the hop distance error, and avoid the accumulation of errors in the subsequent computation process. The simulation results show that the improved DV-Hop algorithm reduces localization error effectively and has good stability without additional devices; therefore, it is a practical localization solution for WSN.
Energy Sensing and Monitoring Framework with an Integrated Communication Backbone in the Energy Efficient Intelligent Buildings
Authors: Pan Jian Li , Chen Shan Zhi , Jain Raj , Paul Subharthi
Published: March 2013

Building environments are significant sources of global energy consumption. To create energy efficient buildings, the first step is to sense and monitor all the energy-consuming appliances in the buildings and record all the energy consumption information. After that, appropriate energy saving policies can be decided and the instructions can be sent to the control devices to apply the energy saving adjustments. To do that, in-building two-way communication networks are needed to connect all the sensors to collect information as well as to send control instructions. However, most of the current devices are provided by separate manufacturers and with separate network infrastructures and so there is not much integration and interaction among different subsystems. In this paper, we envision a new energy sensing and monitoring framework with integrated communication backbone in the intelligent building environments. Specifically, through comprehensive comparisons and investigations, we study different candidate communicating media and protocols like wireline, wireless, and power-line communications technologies that potentially can be used in the intelligent buildings to realize the goals of coordination, integration, and energy efficiency. Also, we propose an extension "smart box" for integration of the devices before the maturity of the standardization process. Cloud computing and smart phone technologies are also introduced to realize the goals of improving energy efficiency and promote global sustainability.
Improved Probabilistic Active Support Vector Machine Based Remote Sensing Image Classification
Authors: Li Chao Feng , Fan Ji Wei
Published: March 2013

Most existing methods of active support vector machine (ASVM) focus on the samples nearby the current separating hyperplane, which ignore some support vector (SV) samples which are far form the separating hyperplane, also pay not attention on whether the current separating hyperplane is close to the optimal one. In this paper a new classification method of ASVM based on improved probability-calculation method is presented. It not only presents a new method of calculating probability, but also measures the degree of closeness of the current separating hyperplane to the actual separating hyperplane by a confidence factor. Experimental results show the superiority of our proposed method both in classification accuracy and computing cost.
An On-Line Adaptive Product Fusion Tracking Algorithm Based on Multiple-Cue
Authors: Wang Jin Hua , Fu De Qiang , Cao Jie
Published: March 2013

To solve the poor robustness problem that object tracking only by fixation fusion based on multiple clues, an online adaptive fusion tracking algorithm based on multiple clues is proposed. the weighting of the different clues is online adjusting based on scene change , the more the feature contributes, the more a larger value, the less the feature contributes ,the less a smaller value. Simulation results show that this algorithm provides better robustness and stability.
A Structure of Quasi-C* Semigroups
Authors: Sun Yan , Wang Xu Dong , Li Qi
Published: March 2013

An abundant semigroup is called a quasi-C* semigroup if xeyz=xyez for any x,y,z in S and e in E(S). In this article, we studied the structure of quasi-C* semigroups. By using the quasi-direct product, we prove that a semigroup S is a quasi-C* semigroup if and only if S is a quasi-direct product of a left normal band, a C-a semigroup and a right normal band. This result generalizes C-a semigroups.
Image Retrieval via CURE Clustering and SIFT Algorithms
Authors: Tan Xian
Published: March 2013

This paper, by using the short CURE clustering algorithm and image SIFT identification method, the establishment of a kind of image semantic clustering fusion model (image text clustering fusion model, referred to as ITCFM). The model is based on component method, the original image components, original text member, image clustering member, text clustering components, clustering fusion member five parts. In ITCM model for image semantic clustering characteristics on the basis of the description and extraction. The experimental results show that ITCM model can effectively to image to describe the high-level semantic, the image retrieval effect is good, and have stable retrieval performance.
An Improved Algorithm of Concept Extraction in Ontology Learning
Authors: Wu Jun Yun , Xie Cai Yun
Published: March 2013

This paper introduces a traditional method of concept extraction. Considered some defects which this method will miss some concepts having synonyms and the relationship of “is-a”. It gives the improved algorithm to extract them. The result of the experiment shows the feasibility of this method.
No-Reference Blur Assessment Based on Entropy and PCNN for Restoration Images
Authors: He Jin Ping , Chen Jian Sheng , Su Guang Da
Published: March 2013

In practical problems, there are usually no clear counterparts as reference to evaluate restoration results. So no-reference blur assessment is very important and necessary. In this paper, we proposed an objective measure named as Edge Factor (EF) to appraise image blurring. The fundamental rationale was that blurring effect was much more perceptible in edge transition zones. The pixel number of edge transition zones would decrease when blurring occured. We defined the pixel number ratio of the edge transition zones to the whole image as EF. Experimental results show the monotonic consistency of EF and RMS. The proposed method is further compared with some common edge detection algorithms to demonstrate the effectiveness of combining point-based entropy with Pulse Coupled Neural Network.
Weighted BMO Estimates for Commutators of Riesz Transforms Associated with Schrödinger Operator
Authors: Gao Wen Hua
Published: March 2013

Schrödinger operator; Weighted BMO spaces; Reverse Hölder inequality; Commutator Abstract. In this paper, the Schrödinger operator on n dimensions Euclid space with the non-zero, nonnegative potential function satisfying the reverse Hölder inequality is considered. The weighted boundedness of the commutators composed of several Riesz transforms associated with the Schrödinger operator and weighted BMO function on weighted Lebesgue integral spaces are obtained, for some weighted function.
Analysis of Articulated Mobile Robots for the Urban Search and Rescue
Authors: Xiang Hong Wei , Chen Chang Zheng , Ye Chang Long
Published: March 2013

Articulated structure of mobile robot presents high flexibility on the environment adaptation. It has been widely used on the mobile robot to get through rough terrain. This class of robots named as articulated mobile robots can move in hard condition with high stability and environment adaptability. In order to satisfy the requirement of Urban Search and Rescue (USAR), a series of articulated mobile robots are analyzed. The performance of articulated mobile robots is analyzed for get an appropriate robot for USAR. Two snake-like robots named Perambulator I and II are analyzed. Based on the structure of Perambulator II, the articulated mobile robot Ameba II are presented based on track drive mechanism. Ameba II has high performance on mobility and adaptability in complex environment. The comparisons among of some typical articulated robots are given based on mobility and environment adaptation. The experimental results of both Perambulator II and Ameba II show that the Ameba II mobile robot is a better than the snake-like robot Perambulator II on the urban search and rescue applications.
A Fuzzy Adaptive Force Controller Design of Robotic Manipulators for Pick-and-Placing Thin Brittle Materials
Authors: He Chong Dong , Qin Hai Chen , Chen Jian Kui
Published: March 2013

For the pick-and-place operations of GDL, this paper presents and obtains the control system model using system identification method, and analyzes three distinct stages for the motion characteristics in pick-and-place operations. To satisfy the stick requirements for contact force control, a force controller based on fuzzy adaptive PID algorithm and a position controller based on feed-forward control are presented and designed. Simulations are carried out to verify the feasibility and effectiveness of the proposed control method. The above control strategies and methods are applied to pick up and place GDL. They can also be extended to the pick-and-place operations of the chips and other filed, which has broad application prospects.
Ferrite-Piezoelectric Layered Composite Materials for Magnetoelectric Tunable Dual-Band Bandpass Filter
Authors: Zhou Hao Miao , Zhu Feng Jie , Li Chao , Xiao Ying
Published: March 2013

A novel magnetoelectric tunable dual-band bandpass filter in which the processing core is based on a ferrite-piezoelectric layered structure is designed and characterized. The structure is consisted of bonded layers of single-crystal yttrium iron garnet film and single-crystal lead zirconate titanate slab (YIG-PZT). The tunability of the filter can be accomplished by magnetoelectric interaction between the YIG film and PZT film that manifests as a shift in the ferromagnetic resonance (FMR). Simulation results show a 24 MHz tuning range for E=-6～6 kV/cm, and the insertion loss of stop band is more than 34 dB, thus the filter can be applied to the working frequency band of TD-SCDMA in the wireless communication system.
Design of a Miniaturized Microstrip Wilkinson Power Divider
Authors: Cai Xiao Tao , Yu De Jiang , Wang Hui Feng , Hu Ru Gang
Published: March 2013

A miniaturized microstrip Wilkinson power divider is proposed in this paper. The designed power divider is miniaturized by means of using the snake-shaped structure to meet the engineering requirements. During the operation frequency band, the designed Wilkinson power divider has good performance of impedance matching at three ports and the measured return loss of each port are all less than -17dB. The isolation between two output ports is better than -20dB. The insert loss is less than 0.7dB. The designed power divider is fabricated to validate the design. The proposed power divider is measured and the simulated and measured results have a good agreement.
Research on the High Voltage DC Grid-Connected Converter Based on Photovoltaic
Authors: Ju Chang Bin , Feng Wei , Wang Huan , Xu Hong Hua
Published: March 2013

With the rapid development of the VSC-HVDC Power transmission and distribution grid demonstration projects, the technology of the DC transmission once again becomes a research focus. In order to meet the needs of accessing VSC-HVDC power grid of Photovoltaic power generation, the topologies suitable for photovoltaic high voltage DC grid-connected converter was analyzed, the program based on the dual-module combination of full-bridge topology structure was proposed, a detailed control strategy using dual-loop of voltage and current loops was given, and finally a 12kW simulation model to verifying the system topology and control strategy was constructed using PSIM. The simulation results show that the PV high voltage DC grid-connected converter has a good dynamic response and steady state performance.
Study on QoS Routing Protocol for New Wireless Mesh Networks
Authors: Gao Yong Hong
Published: March 2013

A QoS aware routing protocol for Wireless Mesh Networks is studied in this paper, the QoS metrics taken into account are bandwidth in our studies, end to end delay and stability of the routes. The routing metric reflects the maximal available bandwidth of a routing path, which is calculated based on the available bandwidth of mesh nodes with the consideration of the interference caused by the hidden terminals in WMNs. With the help of admission control decision, QRBC uses the routing metric in the route discovery process to find a QoS guarantee route for the real-time applications. The simulation results demonstrate that the QRBC protocol can find a less interfering and bandwidth guaranteed routing path for real-time flows.
A Novel Cognitive Frequency Hopping Mechanism for Bluetooth Network
Authors: Du Qing Zhi , Peng Yi , Yang Qiu Ping , Yang Xiu Mei
Published: March 2013

Bluetooth is a short-range wireless technology that operates in the 2.4GHz unlicensed ISM band, so it will inevitably encounter the interference from other wireless systems and other Bluetooth piconets. Because of the flexible, efficient and reliable spectrum access by adapting the radio’s operating characteristics to the real-time conditions of the environment, cognitive radio technology is apply in Bluetooth network. In this paper, a novel cognitive frequency hopping (CFH) scheme based on channel quality detection is proposed. The coexistence mechanism of Bluetooth network and link quality detection method is described and discussed. Simulation results shown the performance of the proposed CFH system is improved.
A Collaborative Multilateral Localization Algorithm for Wireless Sensor Networks
Authors: Zhang Shao Ping
Published: March 2013

Localization technology is one of the key supporting technologies in wireless sensor networks. In this paper, a collaborative multilateral localization algorithm is proposed to localization issues for wireless sensor networks. The algorithm applies anchor nodes within two hops to localize unknown nodes, and uses Nelder-Mead simplex optimization method to compute coordinates of the unknown nodes. If an unknown node can not be localized through two-hop anchor nodes, it is localized by anchor nodes and localized nodes within two hops through auxiliary iterative localization method. Simulation results show that the localization accuracy of this algorithm is very good, even in larger range errors.
An Improved Echo Cancellation Algorithm with Low Computational Complexity
Authors: Wu Ya Ting , Zhao Y.Y. , Yu Fei
Published: March 2013

A low-complexity echo canceller integrated with vocoder is proposed in this paper to speed up the convergence process. By making full use of the linear prediction parameters retrieved from decoder and the voice active detection feature of the vocoder, the new echo canceller avoids the need to calculate decorrelation filter coefficients and prewhiten the received signal separately. Simulation results show performance improvement of the proposed algorithm in terms of convergence rate and echo return loss enhancement.
Optimization Techniques of Traceroute Measurement Based on BGP Routing Table
Authors: Sun Cheng Qi , Ding Peng Fule
Published: March 2013

Abstract：With the complexity of network structure and the network expanded rapidly, AS-level network macroscopic topology measurements will be more and more important in the network studies. If we can catch a network macroscopic topology which is more close to the actual world, it will help researchers explore the inherent laws of network structure and the relationships between network structure and political, and economic in the real world, it also useful for network providers to prediction of network problems and improve the network environment more accurate and timely. Our paper puts forward method that combined BGP routing table with traceroute measurement and use the given BGP data to predict the result of traceroute measure, and change the sequence of measurement target, so as to improve the accuracy and efficiency of the traceroute measurements result.
Analysis and Research of MAC Fairness in Ad Hoc Network Based on the Game Theory
Authors: Yong Tang
Published: March 2013

In the ad hoc network, the unfairness of the system will affect the quality of service seriously. This paper proposed a new algorithm---FBGT, the algorithm use successfully send rate as measurement parameter, and use the Nash equilibrium of game theory as each flow transmission probability. The algorithm calculate every flow’s successfully send rate, and then exchange with the neighbor nodes, combing with the node's own information and neighbor node information to determine the backoff time to improve the system fairness. Due to FBGT algorithm taking into account the system’s local and global fairness and throughput, experimental analysis and data simulation showed the system's fairness index has been increased by 10% - 15%, the throughput of the system has also been improved to a certain degree.
Establishment and Implementation in MAPGIS 1:50000 Scale Soil Database
Authors: Guo Kui , Zhang He Sheng
Published: March 2013

This paper analyzes technology process ,of 1:50000 scale soil database in Changzhi County , Shanxi Province, and sets up soil database in Changzhi County. integrated use of VisualBasic6.0, Excel2003 development software,This paper analyzes the function and application of soil database, Introduced the corresponding results , provided data support for land suitability evaluation based on soil database, land reclamation, etc.
Perspective Projection Based on Quaternion Interpolation
Authors: Xing Yan , Tan Jie Qing , Hong Pei Lin
Published: March 2013

Quaternion sandwiching formula to compute perspective projections has been given by Ron Goldman in an article titled “Understanding quaternions”. In this paper, we applied this method to obtain perspective images of 3D objects, and proposed a modified method to interpolate two projection planes with different directions and distances from eye point to acquire an intermediate viewing plane. Experimental results show that our interpolation method improves the disadvantage of uneven movement speed when quaternion SLERP method is directly adopted.
Reference Viewpoints Selection for Multi-View Video Plus Depth Coding Based on the Network Bandwidth Constraint
Authors: Luo Lei , Jiang Rong Xin , Tian Xiang , Chen Yao Wu
Published: March 2013

In multi-view video plus depth (MVD) coding based free viewpoint video applications, a few reference viewpoints’ texture and depth videos should be compressed and transmitted at the server side. At the terminal side, the display view videos could be the decoded reference view videos or the virtual viewpoints’ videos which are synthesized by DIBR technology. The entire video quality of all display views are decided by the number of reference viewpoints and the compression distortion of each reference viewpoint’s texture and depth videos. This paper studies the impact of the reference viewpoints selection on the entire video quality of all display views. The results show that depending on the available network bandwidth, the MVD coding requires different selections of reference viewpoints to maximize the entire video quality of all display views.
Strategy Study on Maximum Degree and Bisection Degree Synchronization Search in Scale-Free Networks
Authors: Chen Xin Yi , Xia Jian Hua
Published: March 2013

With the expansion of network and the increasing number of communities’ network, It’s a big problem for the search algorithm to enhance the search efficiency. The number of search steps and the amount of query information generated by maximum degree search strategy, which will grow exponentially, consequently, and lead to low the efficiency of search. Without considering the network congestion, breadth-first search strategy is undoubtedly the best search efficiency. From the point of the breadth-first search strategy, this paper designed and proposed the synchronous search strategy of Maximum degree and Bisection degree, and described the algorithm idea and algorithm design for MBDS. The simulation results showed that MBDS not only decreased the amount of query information, but also can efficiently decrease the search steps and improve the search speed.
A Novel Discrete Differential Evolution Algorithm for SVRPSPD
Authors: Hou Ling Juan , Hou Zhi Jiang
Published: March 2013

Aiming at the stochastic vehicle routing problems with simultaneous pickups and deliveries, a novel discrete differential evolution algorithm is proposed for routes optimization. The algorithm can directly be used for the discrete domain by special design. Computational simulations and comparisons based on a medium-sized problem of SVRPSPD is provided. Results demonstrate that the proposed algorithm obtains better results than the basic differential evolution algorithm and the existing genetic algorithm.
Fast Tracking for Video Target Tracking
Authors: Jin Xue Bo , Du Jing Jing , Bao Jia
Published: March 2013

Fast video tracking can result in irregular sampling tracking problem. This paper transforms the irregular sampling measurement to the time-varying parameters and develops a model with adaptive parameters on line by the autocorrelation function of Markov random processing. Simulations and experiments show the good fast-tracking performance can be get by the model developed here even at very high irregular rate of measurement sampling time.
The Deficiency of E-Commerce Contract and some Propose to Perfect
Authors: Jin Gao
Published: March 2013

With the development of information technology, electronic data exchange to some extent takes the place of the traditional transaction based on paper contract, which challenged the legal system and the information security system while facilitating the transaction. This paper studied the typical procedures of signing a E-commerce contract, found that there are some problems on legal and operation levels, especially on the TTP system, and put forward some suggestions to improve it.
Case Study of the Application of a Digital Pen to a Defect Checklist of an Apartment Housing Project
Authors: Kim Gwang Hee , Shin Yoon Seok , Kim Tae Yong , Lee Young Do
Published: March 2013

Information technology (IT) has been introduced to the construction industry to improve productivity and competitiveness. But IT tools are not being activated because field engineers are not familiar with IT tools, and consider the additional work to be a burden. Therefore, this study aims to examine the potential application of the Digital Pen to the construction industry. The results of this study showed that there is the potential to apply the Digital Pen to many fields of the construction industry.
The 2.5D Modeling Method Based on Expanding Half-Dimensional Information
Authors: Yang Feng , Yu Shun , Li Tie Nan
Published: March 2013

The entity can be attributed to two-half dimension modeling in the nature, so it is important to research on 2.5D modeling. Because traditional 2.5D modeling is focus on equal or unequal change in the vertical direction, so it is not good at the entity modeling. This paper is discussed expanding half-dimensional information in the traditional 2.5D modeling in accordance with actual needs. Expanding half-dimensional information contains several parameters of the variable that it can be modeling so fast.
A Way to Substitute Multi-Threading Programming at Windows
Authors: Zhou Wei , Liu Wei
Published: March 2013

After the emergence of multi-threading technology, which improve the efficiency of the system and improve the running speed of the procedure has played a significant role. While multi-threading has its rare, but not omnipotent, after all, multi-threaded, and it also has many deficiencies. If the programmers simply hold the pursuit of multi-threaded, in the case of improper application, it will reduce the efficiency of procedures, resulting in error that can not be resolved. The paper aims to explain a way to instead of multi-threaded to complete background work: override OnIdle() function of CWinApp class to deal with background tasks. Of course, the function can not be used to complete complex and demanding real-time occasions.
Research on Smart Grid Support Environment Based on Mobile Agent
Authors: Yong Deng
Published: March 2013

Firstly, grid support environment model based on mobile agent is proposed, according to complex sensor applications. Secondly, the prototype scheme of grid support environment was put forward, with division, function, dependant relationship, and disposition of modules given. Finally, the process to develop a grid support environment was introduced. Keywords: mobile agent; smart grid; task mechanism.
The Analysis of the Government Information Sharing Based on the Game Theory
Authors: Wang Tian Yong , Gao Ge , Wang Qian Qian , Wang Yu Lei
Published: March 2013

Focusing on the "information island", "information black hole" phenomenon of the government information resources sharing, it can't meet the demand of information to the public. The work analyzes the interests between the same level governments departments, superior and subordinate departments, and between the government and the public based on the game theory. Find out the obstacle of the sharing information. Then the work give some advices on solving the questions .It can contribute to the government information resources sharing.
PANI / MWNTs / EP Composite Microwave Absorbing Coatings Dielectrical and Microwave Absorbing Properties Analysis
Authors: Zang Chong Guang , Cao Xian Peng
Published: March 2013

In this paper, the polyaniline (PANI) coated multi-walled carbon nanotubes (MWNTs) was prepared in situ polymerization. Adding PANI/MWNTs into epoxy resin（EP）, we got PANI / MWNTs / EP composite microwave absorbing materials. Through testing permittivity 、permeability and reflection loss of materials, the paper showed the effect of PANI/MWNTS to the dielectrical and microwave absorbing properties of materials.The results showed： PANI/MWNTs had great effect on dielectrical and microwave absorbing properties of materials. But the imaginary permeability was close to 0. That indicated that it mainly consumed electromagnetic wave by dielectric loss. In 200-1000MHZ, materials had better absorbing property and lower reflection loss (-13.6).
Research on the Preparation of Cu-Ni-Al Prealloyed Powders
Authors: Lei Peng , Chen Jian , Li Wei , Ren Yan Jie , Qiu Wei , Chen Jian Lin
Published: March 2013

The method of preparation of Cu-Ni-Al prealloyed powders were studied in this paper. Cu, Ni, Al were smelted at 1500°C and N2 was chosen as atomizing media to produce the Cu-Ni-Al prealloyed powders. The morphology and particle size distribution of Cu-Ni-Al prealloyed powders were analysis with Scanning electron microscopy; the phase composition of Cu-Ni-Al prealloyed powders were analysis XRD. The results show that the morphology of Cu-Ni-Al prealloyed powders are almost nearly spherical, particle size distribution is very uniform and the average particle size is 39μm. The powders are composed of Cu and AlNi phase.
Study on Impact of Adhesives to Inkjet Paper Properties
Authors: Zhang Yan
Published: March 2013

This paper intend to study the role of adhesive in inkjet paper coating, comparative experiments are used to explore the amount of glue on the paper performance adhesive paper under different proportion of both PVA and AVE the analysis and research, parameters lay the basis for the use of inkjet paper coating adhesive.
Effect of Argon Pressure on the Structure and Resistivity of Dc Magnetron Sputtered LaB6 Films
Authors: Hu Li Jie , Zhang Lin , Zhao Guo Qing , Lin Jie , Min Guang Hui
Published: March 2013

A series of Si (100) based LaB6films were deposited by D.C. magnetron sputtering with different argon pressure, one of the most important deposition parameters, which affect both the structure and properties of the thin films. XRD, AFM, Raman, and Hall measuring instrument were used to characterize the film structure and performances. It was found that argon pressure strongly influenced the condensing particles’ kinetic energy obviously through affecting the scattering processes of sputtered energetic particles, which played a crucial role in the growth of the LaB6films. LaB6film deposited at 1.0 Pa showed a higher crystallinity degree. Morever, the film displayed a more uniform structure and better electrical property, the relationship between microsture, electrical property and crystallinity were demonstrted as well.
Study on the Second-Order Nonlinear Optical Properties of [6]Helicenes with Chromophores
Authors: Zhang Xin Wei , Li Cun , Xu Jun Qi
Published: March 2013

A series of chiral [6]helicenes have been designed using the molecular engineering of organic nonlinear optical materials. The geometries of [6]helicenes 1, 2, 3, 4,5 are optimized using density functional theory (DFT-B3LYP) method at the 6-31g (d, p) basis set level. Based on the obtained stable molecular configuration, we adopt the TDHT/PM3 method and time-dependent density-functional theory (TD-DFT) to calculate the nonlinear optical (NLO) properties and electronic spectra of these molecules. Results show that the static hyperpolarizability βµ alternates between positive value and negative value, whereas it remains positive for the molecues 2 and 3 which have medium magnitudes βµ, 3.4×10-30esu and 9.6×10-30esu respectively. In molecule 5, there exists two competitive charge transfers that reduce the hyperpolarizability β.
Quantifying the Process of Ozonation Chemiluminescence on Determining Organic Matter Compositions
Authors: Fan Ping Ping , Sun Ji Chang , Hou Guang Li , Ma Ran , Chu Dong Zhi
Published: March 2013

Although the ozonation chemiluminescence can be used to determine organic matter fractions (lipids, acid soluble fractions, acid insoluble fractions), the process is not clear, e.g., what is produced after the organic matter is oxidized by ozone (O3), how much product and reactant are in the ozonation, how to define the complete oxidation? Aimed at resolving these questions, we designed an experiment. On the special equipment developed for the ozonation chemiluminescence studies, two instruments of determining O3 concentrations and two flowmeters were installed to measure the input and output amount of O3 and the amount of O3 consumed can be calculated. Results showed that 1) acid insoluble fractions are oxidized to lipids and acid insoluble fractions; 2) the amount of the product is determined by the amount of reactant and consumed O3 ( ); 3) when the reactant is as result 2), the oxidation is complete, or when the organic matter fractions are stable after ozonation, the oxidation is complete. Further study should test the process at the molecular level.
Research on the Electrical Energy of Piezoelectric-Embedded Asphalt Mixture
Authors: Tang Ning , Sun Chang Jun , Huang Shao Xu , Pan Pan , Wu Shao Peng
Published: March 2013

There is an important effect on road safety with no lighting facilities near the wild road. With the piezoelectric materials embedded in the asphalt concrete as the smart aggregates, the piezoelectric asphalt concrete transforms the vibrational energy of road surface into electrical energy, to supply the road lighting facilities or be stored up. In this study, the electrical energy of piezoelectric-embedded asphalt mixture by using UTM and wheel tester. The results show that PMnS-PZN-PZT ceramic doped with 0.45wt% Fe2O3 (4mm×8pieces) be embedded in the AC-10 asphalt concrete which can obtain well road performance and micropower electrical energy.
Synthesis and Characterization of a Novel Starch-Based pH-Sensitive Hydrogel
Authors: Du Jie , Zhao Tian Qin , Liu Yi , Jie Jing
Published: March 2013

Stimuli-responsive hydrogels are extensively investigated to implement new biomedical and pharmaceutical approaches. In this work, novel pH-sensitive hydrogel, with potassium persulfate as the initiator, acrylic acid and butyl methacrylate as graft monomer, were synthesized by microwave irradiation. FT-IR measurements testified the hydrogels formed structure. The SEM micrographs revealed that the porous structures of hydrogels changed with the increasing AA content. The experimental results demonstrated that the gels do not swell greatly at low pH media whereas they swelled sufficiently at high pH media, exhibiting smart pH sensitivity.
Porosity Simulation by Using Block Error Method
Authors: Bian Wen Li , Ting Zhang
Published: March 2013

Porosity plays an important role in the characterization of transport properties. However, it is quite difficult to predict the unknown porosity values only by some sparse conditional data in the process of simulation based on current popular interpolation methods. Therefore, some interpolation or extrapolation methods are used to estimate or predict the unknown porosity for better simulated results. Any numerical modeling should incorporate all relevant information from different scale data including coarse scale support data (block data) and fine scale support data (point data) to improve interpolation accuracy. Block error simulation (BESIM) is an alternative algorithm to generate stochastic realizations conditioned to both point and block data. Under the rather severe restriction, block data are linear averages of their constituent point values. This method allows reproducing both block and point data at their locations. The experimental results demonstrate that BESIM is practical in porosity simulation.
Research into the Preparation and Performance of PP-G-DL411 Compatibilizer and PP-G-DL411/GF/ PP Composites
Authors: Huang Bo Fen , Wang Jun Jie , Liang Han Xuan
Published: March 2013

Aluminum ester grafted polypropylene copolymer (PP-g-DL411) compatibilizer and PP-g-DL411/GF/PP composites are prepared by melting cross blend. FTIR results show that DL411 grafts on PP molecular chains and leads to a new PP-g-DL411 copolymer. SEM reveals that PP-g-DL411 can effectively improve the interface compatibility and enhance the interfacial adhesion between GF and PP. Experimental results indicate that the best comprehensive properties of PP-g-DL411/GF/ PP composites are achieved when the percentage of PP-g-DL411 is 8% and that of GF is between 40% and 45%. In particular the impact strength is increased by 222% compared with uncompatibilized GF/PP.
Effects of Surface Elasticity on Scattering of P Waves by an Elastic Half-Plane with a Nanosized Semi-Cylindrical Inclusion
Authors: Ou Zhi Ying , Liu Cheng , Liu Xiao Wei
Published: March 2013

The scattering of plane P waves by a nanosized semi-cylindrical inclusion embedded in an elastic half-plan has been studied in this paper. To account for the surface effect at nanoscale, the surface elasticity is also adopted. When the boundary condition at the straight edge of the half-plane is traction free, the analytical solutions of stress fields of the half plan with semi-cylindrical inclusion are expressed by employing a wave function expansion method. The results show that surface energy has a signiﬁcant effect on the scattering of plane P waves as the radius of the semi-cylindrical inclusion shrinks to nanoscale. For incident waves with different frequencies, radius of semi-cylindrical inclusion, the effects of surface energy on the dynamic stress concentration near the semi-cylindrical inclusion are discussed in detail.