bluuebunny/crossref_metadata_2025 huggingface dataset:
Fabrication Technology of Involute Micro Gear Based on Two-Photon of Femtosecond Laser
Authors: Sun Shu Feng
Published: December 2010

Microfabrication is a kind of critical technology for the development of Micro Electro-Mechanical Systems (MEMS). The frequently-used microfabrication technologies are electric discharge machining, photoetching, LIGA and laser fabrication, et al. Micro structures may be fabricated by these technologies. The polymerization principle of two-photon of femtosecond laser is different from that of single-photon. Photoinitiator of photosensing material absorbs two photons simultaneously to accomplish energy level transition and to induce the material to occur photochemical reaction. For the material absorbing two photons, the energy of each photon is equivalent to half of the energy that needed by the material transiting from ground state to excited state. It is also equal to half of the energy needed by the material occurring single-photon absorption. Therefore, the photonic frequency of two-photon excitation light source is half of the single-photon light source. According to two-photon fabrication principle, machining system of two-photon of femtosecond laser is set up. Which includes light path transmission equipment, three dimensional micro displacement scanning stage and control software, et al. Involute micro gear is fabricated by two-photon of femtosecond laser generated by the system.
Modeling and Simulation of the GA_LSSVM-Based Soft Measurement for Torque
Authors: Chen Zhen , Huang An Yi
Published: December 2010

Given the traditional method of direct measurement which is of high cost, difficult installation and poor reliability,this paper is presented a new model of the torque soft measure method based on least squares support vector machine using genetic algorithms optimization:genetic algorithms replaces the previous cross-validation method for model parameter’s optimization, in order to avoid the blindness of the parameter choices.Verified by simulation, the model can effectively address the deficiencies of traditional measurement methods and obtain better measurement accuracy and speed , possessing benefits of an outstanding ability for small sample study and being easy to compute.
Force Closure Analysis for an Underactuated Robot Gripper
Authors: Li Qun Ming , Qin Qing Hua , Zhang Shi Wei
Published: December 2010

The force closure properties of the underactuated forging robot grippers are analyzed. The gripping contact forces distributed between the interface of the tongs and the work-piece are considered as an equivalent resultant force whose contact model is friction point contact, and must meet force closure equations. Then the operation theory of N robot fingers to grasp an object can be used for the analysis of the force closure and the calculation of contact forces. Based on the configurations of heavy duty grippers, where the position distribution of the resultant contact forces is optimized, the iterative algorithm of linear constrained gradient flows is used to optimize the contact forces and calculate the gripping force. The force closure properties for different forging robots and in different operation conditions and mechanisms are analyzed. Simulation and experimental results demonstrate the effectiveness of the optimization method.
Value Chain-Based Business Process Optimization Modeling for the Third Party Logistics Enterprise
Authors: Shan Hong Bo , Li Shu Xia , Tong Wei Zhong
Published: December 2010

Whether the business process and operational activities of the third party logistics (3PL) enterprise is coordinated and optimized is a key factor determining the operational efficiency of 3PL. Based on the value chain theory, a model of the business process optimization of 3PL cooperation is built. By analyzing the relationship between the business process and operational activities, how to allocate cost and value to operational activities is determined. In this way, the business activities with competitive advantages in the corporation are found, and the business process is further optimized accordingly, which can improve the operational efficiency of 3PL enterprise as a result. At last, a case study of business process optimization modeling for a 3PL enterprise that operates steel products is given to validate the effectiveness and practicability of this method.
Tracking Compensation of a Moving Target for a Biped Robot Based on Vision Sensor
Authors: Shen Yun De , Cho Dong Soo , Kee Chang Doo , Li Zhen Zhe
Published: December 2010

In this paper, the visual tracking algorithm for a moving target is proposed for the biped robot of which camera movement is irregular. Hexagonal Matching Algorithm is used to measure the changes of size, location, and rotation angle for a moving object from its image frame. For enhancing the efficiency of the tracking, we can adaptively adjust the starting point and the size of search area from the image information obtained. Finally, by using Affine Transform and Kalman Filter, the position estimation of the moving target is refined against the swing of the camera. Experiments with 20-DOF biped robot using mono vision sensor are implemented to prove the reliability of the proposed method.
Optical Fiber Temperature Measurement Technique Based on Fluorescence Mechanism
Authors: Wang Yu Tian , Bo Xiao Xu , Zhao Jin
Published: December 2010

A kind of fluorescence optic-fiber temperature sensor is studied. It used sapphire fiber thermal probe, making use of the method that FFT transformation to carry on a processing to the fluorescence signal. Among the detection range from 0 to 450°C, the thermometer has an average temperature resolution of 0.4°C. The experimental results show that this temperature measuring system can effectively decrease the influence of instability of light source and intensity variation in measuring channel on measurement results. The system has the advantage of high accuracy, very high temperature resolution, good dynamic response and immunity to the electro-magnetic interference. So it may be used in microwave treatment and thermal monitoring of Medium Voltage Substations.
Research on Logistics Activity Cost Control Procedures Based on ABC in Manufacturing Enterprises
Authors: Zhou Ling Yun , Zhang Qing
Published: December 2010

Logistics cost control has become a new source of profits for manufacturing enterprises. Activity based costing (ABC) can achieve great accuracy of logistics cost by using multiple cost drivers, and logistics activity cost control based on ABC develops an advanced management measure. According to the activity operation processes and characteristics of supply logistics, production logistics, sale logistics, reverse logistics and waste material logistics, the mechanism of logistics cost control based on ABC is analyzed for manufacturing enterprises, and the integrated logistics cost control system is creatively put forward for manufacturing enterprises to implementing logistics cost management efficiently. Moreover, some measures including beforehand control, process control and afterwards control are put forward for manufacturing enterprises to reduce the total product cost.
Implementation and Analysis of TML Based on Different Transport Protocols
Authors: Bin Zhu Ge , Cheng Yu , Wang Wei Ming
Published: December 2010

The messages in the Fp reference point of ForCES protocol can be divided into two kinds: control messages and redirect messages. According to this division, the control message channel was used to transmit control messages and the redirect message channel was used to transmit redirect messages. In this paper, we use different transport protocols to transmit control messages and redirect messages. Then test and analyze the TML based on different transport protocol to verify the correctness of the designs.
Solutions to VRP in Home Delivery Based on Ant Colony Optimization Algorithm
Authors: Hu Meng Jie , Wang Jian Ping , Li Xiao Min
Published: December 2010

Home delivery is a new trend in logistics at present. The distribution path planning has a great impact on customer’s satisfaction and the total cost of operation in home delivery industry. In This paper, we construct the distribution path planning problems in the industry of logistics and home delivery based on Ant Colony Optimization Algorithm, the optimal vehicle’s number and the best distribution path can be found in the shortest time by using the model advised in the paper. It is found that there is no obvious correlation between the service and the total costs of delivery after the analysis. So, home delivery companies can select the optimal path planning, i.e. a lower cost of delivery and higher level of service, according to their service policies.
Security Analysis of a Convertible Multiauthenticated Encryption Scheme
Authors: Zhang Jian Hong , Liu Xue , Liu Cheng Lian
Published: December 2010

Multi-authenticated encryption scheme is message transmission scheme, which sends message in a secure and authentic way, and allows a group of signers to cooperatively produce a valid authenticated ciphertext so that only the specific recipient can recover the message and verify the signature. Recently, Wu et al. proposed a convertible multi-authenticated encryption scheme and claimed that the scheme was secure. In this paper, we show that Wu et. al’s scheme is not secure against rogue-key attacks. To overcome such attack, we give an improved multi-authenticated encryption scheme by including two hash functions. And our improved scheme is the same efficiency as Wu et.al.’s scheme.
An Improvement Test Approach of Look-up Table in SRAM-Based FPGAs
Authors: Yang Chao , Hong Sheng , Gao Cheng , Zhang Dong , Li Ying
Published: December 2010

This paper proposes an improvement test approach of Look-Up Table in SRAM-based FPGAs from the third-party testing. This approach solves the mismatch problem which happens in the process of synthesis. Meanwhile, it also eliminates the problem of waveform distortion and period error which are caused by the superposing of different addresses. Though the number of the partial chain increases, the modification for CUT structure will not increase the test time notable. More importantly, the modified approach can ensure the correctness of synthesis result. Besides, because the modified BIST for testing the Look-Up Table is achieved by using Hardware Description Languages, it has the characteristics on general-purpose employ and flexibility.
Improvement of Apriori Algorithm Based on Boolean Matrix
Authors: Wang Bin Li , Shen Yan Guang
Published: December 2010

This paper introduces the association rules and Apriori algorithm in data mining, considering the disadvantages of Apriori algorithm, a new improved Apriori algorithm based on Boolean matrix is proposed .It scans transaction database only one time, thus reduces the system cost and increases efficiency of data mining.
Objective Evaluation on Half-Circle Skirt Shape Style Based on 3D Virtual Garment Simulation
Authors: Xia Xin , Gong Qin Li , Jin Juan Feng , Zhang Yi Jie , Zou Feng Yuan
Published: December 2010

The article selected 55 typical dress fabrics to study the sharp style of half-circle skirt. The skirts were simulated by using 3D virtual try-on tool. With emphasis on objective evaluation parameters of half-circle skirt sharp style selection and application of factor analysis, cluster analysis to establish appropriate evaluation system, providing a basis for half-circle skirt fabric selection.
The Empirical Study on Factors Influencing the Disclosure of Internal Control Information of Listed Companies
Authors: Chen Hong Ming , Shi Ya Nan
Published: December 2010

The internal control is an important means to realize the purpose of organizations, however, the effectiveness of internal control depends on not only the design, more important, but its rationality, completion and effectiveness of operation. The disclosure of internal control information is usually a way of examining the effectiveness of internal control’s operation for management and evaluating the company’s operational condition and forecasting its development foreground for external stakeholders. Due to the lack of unified standards for disclosure of internal control information, the obscurity of responsibility, centralization of ownership and some others, the disclosure of internal control did not implement effectively. Based on the data of the 19 listed companies of real estate companies during 2007-2009, the article analyzes the influence of equity structure, sales growth, financial leverage, net assets yield, and audit opinion on financial report, enterprise scale, total asset turnover and current ratio to the disclosure of internal control information. It applies the principal component analysis (PCA) and multivariate linear regression
Energy-Efficient Secure Routing Protocol for Wireless Sensor Networks
Authors: Wang Xin Sheng , Zhan Yong Zhao , Xiong Shu Ming , Wang Liang Min
Published: December 2010

In view of the problems of limited energy of the nodes and threat to routing security in wireless sensor networks, Energy-efficient Secure Routing Protocol (ESRP), an energy-efficient secure routing protocol for wireless sensor networks, is proposed. According to the structured topology of hexagonal mesh, hops at different directions are calculated on the optimal route for transmitting data packets in ESRP. With the help of characters of hops, the nodes can rapidly find a route among multiple optimal routes by the policy of the twice probability routing selection. Data breach is prevented by data encryption and data security is realized by one-way hash key chain and symmetric key authentication. Analysis and simulation results show that ESRP has better performance on security and saving energy.
Effects of Organic Acid Radicals on Degradation of Orange II in UV-Fenton System with Hydroxyl-Fe-Pillared Bentonite as Catalyst
Authors: Chen Jian Xin , Hu Zhao Ji , Yuan Xue Xia , Yao Yan Hong , Li Jun , Zeng Kai Yi
Published: December 2010

In this paper, the effects of organic acid radicals on degradation of Orange II in UV-Fenton system with hydroxyl-Fe-pillared bentonite as catalyst were studied in detail. The results showed that the rate constants of UV-Fenton reaction will decrease when the system contains sodium citrate or sodium malonate. While the rate of Orange II degradation in UV-Fenton system could increase up to 33.3% and 41.7% when EDTA and sodium oxalate were present, respectively. As the additional TOC of EDTA is higher than sodium oxalate, adding sodium oxalate is a more promising enhanced method for Orange II degradation in UV-Fenton system. The rate of Orange II degradation could increase 25%, 42% and 175% when the concentrations of additional sodium oxalate increased up to 0.1 mM, 0.2 mM and 0.4 mM, respectively.
A Study on Physical Technology of Induced-Resistance for Chinese Cabbages
Authors: Yu Ling Chun , Zhang Nai Qin
Published: December 2010

When magnetic fields with the magnetic induction intensity of 0.4T, 0.8T, 1.2T, 1.6T and 2.0T are used to deal with germinating cabbage seeds for 5min, 10min, 15min and 20min separately, the results show that the appropriate combination of field strength and time can activate peroxidase (POD) and polyphenol oxidase(PPO) apparently, and decrease the content of MDA at the same time. Through the downy mildew inoculation tests, the magnetic field effects on the induced-resistance of Chinese cabbage are significantly lower than control, indicating that magnetic field treatment improve the Chinese cabbage downy mildew resistance by removing free radicals in plants, increasing the metabolism of plant’s secondary phenols and reduce the plant tissue within the cytoplasm of the cell membrane permeability and so on.
Image Enhancement Based on Fractional Differential and Image Entropy
Authors: Liu Ya Wei , Li Jian Wei
Published: December 2010

In this paper, a new image enhancement method is proposed based on fractional differential, which can select the differential order automatically by the difference of mutual information (DMI). DMI describes the increase of mutual information in original and enhancement image. Being a measure of ascertaining the ehancement effect, it is considered getting the information balance in the images processed by different differential order. According to it, a criterion of selection differential order is put forward. Image convolutions are implemented with fractional operator in different scales, and then DMI of adjacent scales are calculated. The differential order can be selected in which the DMI is the mininum. The experimental results indicate that the proposed method is effective, and has better result compared with other methods.
An Intelligent Personalized Learning Model Based on Community Discovery Method
Authors: Xu Min , Zhang Yuan , Fang Mei Qi , Li Ning
Published: December 2010

In this paper, we proposed a model of support personalized learning based on SGCL (Social Group Collaborative Learning System). In the model, we provide two algorithms to discover knowledge communities. Based on the community discovery result and system recommendation policy, we give our user the recommendation suggestions to help them to construct their personalized knowledge structure. The paper mainly introduce these algorithms, the AG algorithm based on aggregation and the KC algorithm based on K-Clique model, which are algorithms to discover knowledge communities in SGCL.
Fuzzy Variable Assessment of Urban Flood Control System Safety in Jinan
Authors: Wang Xing Ju , Hao Yu Wei , Lu Yue
Published: December 2010

Urban flood control system is a collection of various preventive measures taken to resist and mitigate flood. Assessment of urban flood control system safety is one of the important measures to coordinate the urban social planning and the urban flood control facilities.The assessment can also promote the sustainable development of city.In allusion to urban flood control system safety is a fuzzy concept with vague denotation, a fuzzy variable assessment model of urban flood control system safety is constructed in this paper based on theories of variable fuzzy sets and relative different functions.The method can determine relative membership degrees and functions of various indexes associated with the urban flood control system safety scientifically and reasonably; through changing the model,the stability of grade eigenvalues is tested; the mean of grade eigenvalues is calculated to improve the reliability of assessment results. The synthetical assessment of flood control system safety can be implemented with the method adopted in this paper.By 4 safety grades, 9 key indexes were screened in the urban flood control system of Jinan to implement the safety assessment in this paper. The case study of Jinan shows that the proposed method is of practical use.
Wireless RFID-Based Thermal Bubble Type Accelerometer and Monitor System Design
Authors: Lin Jium Ming , Chang Po Kuang , Lin Cheng Hung , Zhang Qi Kun , Wang Shih Chieh
Published: December 2010

This research proposes a wireless RFID-based thermal bubble accelerometer design, and relates more particularly for the technology to manufacture it on a flexible substrate. The key technology is to integrate both a thermal bubble accelerometer and a wireless RFID antenna on the same substrate, such that the accelerometer is very convenient for usage. In this paper we use xenon inert gas in the chamber with heavier molecular weight to increase the acceleration sensitivity instead of traditional air or carbon dioxide. On the other hand, the specific heat of xenon gas is also lower so that the bandwidth of the proposed accelerometer is larger and the power consumption is lower. In addition, the inner shape of the chamber is changed as hemisphere instead of rectangular type, comparisons are also made. We have seen that the sensitivity of the proposed design is better.
ANN Prediction of Coefficient of Friction and Sliding Wear Rates of Cast Al6061-Si3N4 Composites
Authors: Ramesh C.S. , Keshavamurthy R. , Vineela D. , Archana R.
Published: December 2010

This work focuses on the prediction of tribological behavior of cast Al6061-Si3N4 composites using ANN technique owing to its wide spread popularity in accurate predictions of material properties. The cast composites were developed by stir cast method and its tribological behavior were experimentally evaluated using a pin-on-disc tribometer adopting loads and sliding velocities ranging from 20-100N and 0.314-1.574m/s respectively. The predictions of coefficient of friction and wear rates of matrix alloy and the developed cast composites by ANN approach do agree very closely with the experimental data. Keywords: ANN, Composites, coefficient of friction, wear rates.
Research on Automatic Detection Technique for Pebrine Image Based on Computer Vision
Authors: Hu Xin Yu , Chen Zuo Bing , Zhang Dao De , Yang Guang You
Published: December 2010

Aiming to achieve the automatic detection and accurate identification of pebrine images, the fuzzy contrast enhancement algorithm was utilized to enhance the contrast of the target image in order to improve the image’s quality; Owing to the color character of light green for the pebrine, the image segmentation technique based on the HSI model can be applied to extract the pebeine image, at the same time, the morphology theory can be adopted to remove the noises such as the hole noise and point noise, and to separate the bond particles; The region labeling can be done on the binary image after the image segmentation, then the shape parameters of pebrine can be extracted, by making full use of the feature parameters, the method of neural network based on genetic algorithm is applied to recognize the pebrine image. These experiments show that the method has achieved satisfactory image recognition results.
The Application of Randomized Hough Transform in Ellipse Image Detection
Authors: Hu Xin Yu , Chen Zuo Bing , Zhang Dao De , Yang Guang You
Published: December 2010

As the traditional Hough transform has such defects as large storage space and long computing time in ellipse detection, an improved randomized ellipses detection method based on least squares was presented, which utilizes the least square approach to fit the ellipse and combines both of the advantages of the random Hough transform and the least square. By setting appropriate distance threshold of the candidate ellipse and the threshold of edge points, the method of ellipse detection decreases the number of random sampling and the invalid calculation of cumulation in the process of Hough transform. The results show that the method doesn’t require large storage space, has good ability to overcome the noise and realizes the fast detection for the single ellipse and defective ellipse.
A Modified Method to Measure Similarity of Generalized Fuzzy Numbers
Authors: Zhao Chun Jiang
Published: December 2010

A modified method to measure the similarity between the generalized fuzzy numbers based on Wasserstein distance is proposed. The method is more fully considered the difference of the generalized fuzzy numbers, especially the shape difference, by Wasserstein distance. The results of comparing the eighteen sets of generalized fuzzy numbers show that the method can overcome the drawbacks of the existing methods, and calculate the similarity measure excellently.
A Multicast Routing Algorithm with Sparse Light Splitting Constrained
Authors: Du Li , Wang Xiao Jing , Lin Li , Zhang Han Yuan
Published: December 2010

This paper investigates the defects that exist in the blocking probability and the cost of establishing light-tree in the multicast routing algorithm with sparse splitting capability constraint based on the Virtual Source (VS). It proposes a new multicast routing algorithm N_VSBA (New Virtual Source Based Algorithm). By introducing the minimum interference routing algorithm in the path calculation among the VS nodes, this new algorithm solves the problem of blocking caused by establishing the light-tree through a pre-computed path when two VS nodes concentrate. This algorithm also solves the problem of VS-based algorithm’s not being able to utilize the TaC (Tap and Continue) capability of indecomposable optical nodes by introduction of MPH (Minimum Path-cost Heuristic) algorithm into the process of adding light-tree into indecomposable nodes. Simulation results show that the new algorithm has improvements of different degrees in aspects of blocking probability, average number of wavelength links and average maximum number of wavelength.
A Parameters Extraction Method of a Novel Micro-Wave Filter
Authors: Deng Zhong Liang , Zhang Nai Bo , Ge Yue Tao
Published: December 2010

In this paper, a novel micro-wave band-stop filter using coplanar-waveguide (CPW) and a parameters extraction method based on Schwarz transformation are presented, The experimental results show excellent agreement between the extracted performance of equivalent circuit and the simulation performance of filter model.
Building of Domain Knowledge Base by Ontology
Authors: Li Li , Li Bing , Shen Yi Lin
Published: December 2010

In this paper, method of building domain knowledge base is proposed through the comparison of ontology and other tools for knowledge expression. In addition, we lay out a model to describe the procedure vividly. Facts show that ontology is the best way to build domain knowledge.
Research on Robot Arm Remote Control Experiment Based on Web
Authors: Yan Hong Wei , Kou Zi Ming , Gao Bo
Published: December 2010

The networked and modularization has become the development orientation of experiment system. Aiming at the need for constructing remote laboratory, the paper focused on robot arm remote control experiment system. Based on the introduced of remote control technologies based on Web and Internet, the paper designed robot arm remote control experiment system structure based on Web. The detail working flow of client and server of the experiment system were also provided, which lies good foundation for the implementation of robot arm remote control experiment system. The constructed robot arm remote control experiment system has accomplished remote login via Internet, so that the resource of robot arm experiments can be accessed remotely.
Real-Time Video Convert System Design Based on LVDS
Authors: Zheng Hua Qiang , Ma Li Fu , Liu Yang , Cai Fei
Published: December 2010

In this paper, we designed a real-time video convert system for the imaging devices which used digital precision progressive scan monochrome camera or the similar camera and as video signal sensor. System hardware circuit design based on LVDS transmission chip, multiformat video decoder chip: ADV718X and the Cyclone II series FPGA. System software design based on hardware description language, verilog HDL and VHDL. The system could real-time capture, process CVBS and output LVDS video data without the system computer.
Measuring Parameters of SpaceWire Network
Authors: Wang Jia Jia , Zhang Yong Xiang , Zhang Wei Gong , Zhou Hua Zhang
Published: December 2010

SpaceWire is used for on-board satellite networks. It is proposed by the ESA as the basis for future data-handing architectures. It takes an indispensable role for the shortage of bandwidth of bus among data processing. Based on the research of SpaceWire Network, some parameters, such as delay, bit error ratio, bandwidth and throughput, a new scheme of the testing about the parameters of SpaceWire was proposed. Then its implementation technology was analyzed and explained.
Design and Verification of Interconnection Network in an SOI-Based FPGA
Authors: Zhao Yan , Han Xiao Wei , Wu Li Hua , Yu Fang
Published: December 2010

In designing an FPGA based on a 0.5 micron SOI-CMOS technology we experienced a crucial task of providing a robust programmable interconnection network to drive long-line and global signals through the entire chip. The performance and signal integrity of these signals are challenged by the variation in the process as well as the signal driving condition of the individual mapped circuits. In this paper, we focus on the design of an efficient long-line signal interconnect network targeting for high speed and low power consumption of the circuit operation in a tile-based FPGA. The design and verification of the long-line with booster in the channels and the clock network circuitry are described in details. The comparison of the simulation and measured signal timing data is reported.
Molecular Tailor of Castable Polyurethane Elastomer with Low Free TDI Monomer Content Prepolymer
Authors: Yi Yu Hua , Tong Zhen
Published: December 2010

Castable polyurethane elastomer based on polytetramethylene glycol (PTMEG) and 2,4-toluene diisocyanate (TDI) was prepared with low free TDI monomer content prepolymer (LF-prepolymer), the structure and properties of the prepolymers and corresponding elastomers were characterized. The result showed that, LF-prepolymer exhibit low viscosity, low molecular weight and narrow molecular weight distribution. The polyurethane prepolymer based on LF-prepolymer show higher bashore rebound, lower compression set and better dynamic properties.
Research on Noise Test of Chains with Non-Metallic Elastic Material Split Rollers
Authors: Liu Xiao Lun , Sun Wei , Ding Song , Wang Wen Cheng , Liu Jia Jun
Published: December 2010

In order to reduce chain drive noise, by changing chain roller structure to mitigate meshing impact and achieve the purposes of noise reduction, a kind of duplex chains with non-metallic elastic material split rollers was designed. To study noise performance of the chains, noise comparison test was done on the same specifications duplex roller chains, and the test results were analyzed and evaluated. The results showed that duplex chains with non-metallic elastic material split rollers could reduce the meshing impact and the polygon effect, which could effectively reduce vibration and noise in the process of chain drive. So the design was reasonable and feasible, noise level was reduced by 3-8dB and a significant noise reduction was achieved.
Simulation of Different Strategies for QoS Improvement in OBS Networks
Authors: Zheng Wei , Ning He
Published: December 2010

Due to the bufferless nature, one of the key challenges in optical burst switching networks is the contention resolution issue, which has made it increasingly important to facilitate QoS provisioning and improve QoS in optical burst switching by adopting appropriate strategies. In the paper, we address the issue of QoS improvement for different contention resolution strategies in optical burst switched networks, and a compounding strategy is proposed based on analysis of various strategies for supporting QoS. To evaluate the performance of different strategies in QoS improvement, simulation models were built up, and the emphasis was focused on comparing the blocking probability and channel utilization probability respectively according to different strategies. By simulation comparison, the difference of strategies in QoS improvement is detailed clearly, and results show that by adopting the compounding strategy, OBS network performance can be improved in QoS supporting.
An Enhanced Similarity Measure Used in Personalized Recommendation Algorithms
Authors: Gong Song Jie
Published: December 2010

Personalized recommendation systems combine the data mining technology with users browse profile and provide recommendation set to user forecasted by their interests. Collaborative filtering algorithm is one of the most successful methods for building personalized recommendation system, and is extensively used in many fields to date. With the development of E-commerce, the magnitudes of users and items grow rapidly, resulting in the extreme sparsity of user rating data. Traditional similarity measure methods work poor in this situation, make the quality of recommendation system decreased dramatically. To alleviate the problem, an enhanced Pearson correlation similarity measure method is introduced in the personalized collaborative filtering recommendation algorithm. The approach considers the common correlation rating of users. The recommendation using the enhanced similarity measure can improve the neighbors influence in the course of recommendation and enhance the accuracy and the quality of recommendation systems effectively.
The Application of Plant Extracts against the Camellia Pathogenic Fungi
Authors: Zhou Guo Ying , He Yuan Hao , Zhou Jian Hong , Bu Ting Ting , Yang Lei , Li Rong
Published: December 2010

Using growth rate method, biological activities of 20 water extracts from 20 different plants were assayed against Colletotrichum gloeosporioides and Agaricodochium camellia Liu. The results show the inhibition rates of the extracts of Syzygium aromaticum, Scutellaria altissima L, Aloe Vera, Lonicera japonica Thunb, Andrgraphis paniculata are more than 60%. The best inhibition effects was S. aromaticum, respectively 96.2% and 98.2%. The toxicity test indicates that the EC50 of S. aromaticum and S. altissima L extracts and the mixture at the 1:1, 1:2, 1:5, 2:1, 5:1 volume ratio against C. gloeosporioides and A. camellia are, respectively ,4.2 and 3.68mg/ml,4.52 and 6.90 mg/ml,5.28 and 5.33 mg/ml,5.84 and 7.01 mg/ml,4.89 and7.01 mg/ml,5.24 and 6.11 mg/ml,4.77 and 5.65mg/ml. Synergistic interaction values are >0.5 and <1.5.
The Design and Implementation of Tile Map Service
Authors: Nie Yun Feng , Xu Hu , Liu Hai Ling
Published: December 2010

In order to upgrade the WebGIS legacy systems smoothly, and improve the response speed of traditional WebGIS and user experience, this paper designs and develops a tile map service based on middleware technology. Through systematic analysis of its basic principle and system architecture, this paper gives several optimization strategies. Finally, we make a performance comparison between tile map service middleware and traditional OGC (Open Geospatial Consortium, OGC) standard WMS service. Our experimental results show that the average response time of tile map service reduced by 46% than sending WMS request to WMS server directly, and the TMS middleware has a high efficiency when cutting map tiles dynamically because of its meta-tiling strategy. The study shows that tile map service middleware has important application value both in improving traditional WebGIS performance and in upgrading existing legacy systems.
A Kind of Workflow System Performance Loss Analysis Model Based on M/G/1
Authors: Zang Wei Hua , Jiao Hong Qiang
Published: December 2010

A good workflow system can minimize completion time and resource capacity needs as little as possible. Therefore, workflow system performance analysis is critical for the design of workflow. Based on M/G/1 theory and combining with workflow system theory, the paper established a performance loss analysis mathematical model of workflow system and performed quantitative analysis on performance of workflow based on the model.
Development and Design of Spectral Measurement Software System
Authors: Xu Chun Yan , Cai Xiao Shu
Published: December 2010

This article mainly describes the technology and difficulties of the spectroscopic measurement software, analyzes the basic structure of the software system, proposes solutions according to functional requirements and creates the corresponding software with such functions. In the spectrum display aspect, it makes a more detailed description for the customized coordinate system and on the data processing module. It solves practical problems more conveniently through constructing a customized data structure, computing function. The Facts have proved that it is very convenient to develop near-infrared Spectral measurement system by using Visual Basic, which fully presents the language features of the Visual Basic.
The Intersection Method: A New Approach on the Concrete Aggregate Model
Authors: Liang Jian , Lou Zong Ke
Published: December 2010

In order to study the meso-structure of concrete deeply, this paper proposes a new approach—intersection method, which is much simpler and more applicable to check the interference for wide varieties of shape aggregate by using the VBA language built-in AUTOCAD. Results show that the procedure to establish the model of concrete aggregate is user-friendly, simple, intuitive and precise. It can be analyzed through introducing into finite element software for the further numerical study of macro and micro mechanical properties of concrete by using the mutual files SAT which is used to exchange the CAD data between AUTOCAD and other software.
Seismic Response of Superposed Wall Panel with Different Edge Components
Authors: Chong Xun , Ye Xian Guo , Wang De Cai , Lian Xing
Published: December 2010

Seismic performance of a kind of superposed wall, which is composed of two precast panels and the cast- in- place core concrete, was studied in the paper. Two groups of superposed wall units with different edge elements were constructed and tested under quasi- static reversed cyclic loading. The strength, stiffness, ductility, energy dissipation and failure modes of the walls under lateral load were investigated, and the influence of different edge elements to the seismic response of the wall panels was discussed. Moreover, numerical simulation analysis was conducted applying multi- spring (MS) model with the finite element analysis procedure CANNY. Results of the inelastic analysis were compared with the experimental ones to validate the reasonability of the numerical model and evaluate the seismic response of superposed walls further.
Experimental Research on Grading of Fine Aggregate in Frame Concrete
Authors: Wang Zhen Shuang , Wang Li Jiu , Su Hao Lin
Published: December 2010

According to frame concrete theory, Concrete was composed of mortar matrix, coarse aggregate, and transition zone between mortar matrix and coarse aggregate. Proper particle grading of fine aggregate can not only save cement, but also increase comprehensive properties of mortar matrix. Uniform design method was used to study the relationships between the grading of fine aggregate and workability, and the relationship with mechanic properties of mortar matrix and concrete. Based on fractal theory, the relationship between fractal dimension and modulus of fineness, and the relationship between fractal dimension and n value in Fuller equation were researched. It concluded that grading of fine aggregate affects the workability and mechanic properties of mortar matrix and concrete, significantly. There was a good linear relation between fractal dimension and n value in Fuller Equation, and fratatal dimension decreased with modulus of fineness increasing.
Ultimate Bearing Capacity of Headed Studs in Tensile Concrete Slab
Authors: Hou Wen Qi , Ye Mei Xin , Zhang Ye Zhi
Published: December 2010

Abstract. In the presented paper, reverse push-out test method was put forward and applied in the ultimate bearing capacity experiments of studs with concrete slab in tension. Ultimate bearing capacity experiments were carried out on 22 reverse push-out specimens composed of C50 or C40 concrete, 14MnNbq steel girder and Φ22studs. Results showed that ultimate bearing capacity of studs, pu, in tensile concrete slab is controlled by concrete failur, concrete strength, studs arragement and reinforcement ratio are the main influence factors of pu. Compared with that in compressive concrete, pu of Φ22 studs in tensile concrete is reduced about 30% averagely. According to the test results, a fitted load-slip relationship curve and a regression formula of pu for studs in tensile concrete were put forward, calculated results were in good agreement with the test results.
Elastic-Plastic Analysis of the Reinforced Beam
Authors: Wang Jin Long
Published: December 2010

The finite element model of the reinforced beam was established. The results were obtained, such as the structural distortion diagram, the cleavage process diagram, the deflection contour map, the stress contour map to the X axle and the equivalent stress map. The result of the simulation shows that the established reinforced beam bring plastic strain and appear crack under the uniform pressure.
Admixtures in Concrete Crack Control and Construction Technology Optimization
Authors: Yu Ran Gang , Wang Xin Hu
Published: December 2010

This paper studies properties of concrete under the action of water-reducing retarder and expansive agent; gives the optimal design calculation method of cooling water pipe in the construction technology: mainly considering pipe’s diameter, distance, cooling water’s flow, temperature, time etc; studies the optimization to the concretes construction method. Midas/Civil, one finite element analysis soft-ware, analyses mass concrete construction of the whole process of the temperature field and stress field in the numerical simulation, considering the admixtures and construction technology. The results show that commonuse of admixtures and reasonable construction technology are the important means of controlling cracks.
Discussion on Drift Limit of Fully Operational Performance Level for RC Structures
Authors: Guo Zi Xiong , Huang Qun Xian , Liu Yang
Published: December 2010

In accordance with the philosophy of performance based seismic design (PBSD), the fully operational performance level (or service performance level) for frequently occurring earthquakes and the criteria for determining its allowable drift indices is discussed in this paper. To determine the allowable drift limits of the service performance level for frequently occurring earthquake, it is important that not only the degree of damage of nonstructural members but also the degree of cracking in structural components should be controlled. Based on an analysis of test results and calculation results, a series of allowable drift index limits that conform to the fully operational performance level of RC structures are presented.
The Mechanics Behavior Study of Four-Cell Concrete Rectangle Liquid-Storage Structure under the Thermal Envirement
Authors: Cheng Xuan Sheng , Zhou Zhi
Published: December 2010

Reinforced concrete is the current main material to build liquid-storage structure. Because coarse aggregate and fine aggregate have different expansion coefficient under thermal environment, the expansion crack and leakage will happen. it will make liquid-storage structure failure. So thermal effect has become the most important factor that can not be ignored in the structure analysis and design. In this paper, adopting FEM software ANSYS, considering four-cell reinforced concrete rectangular liquid-storage structure at different temperature, heat-solid coupling numerical simulation analysis is proceeded, and the axial (shear) force and bending moment distribution are obtained.
Study on Mechanical Behavior of the Key Components of High-Level Transfer Frame-Shear Wall Structure with Viscous Dampers
Authors: Wu Cong Xiao , Zhou Yun , Deng Xue Song , Wu Cong Yong
Published: December 2010

Based on the limited demand of transfer beam sectional dimension of tall building structure with transfer story in Technical Specification for Concrete Structures of Tall Building, a high-level transfer frame-shear structure with viscous dampers is presented for simulating the mechanical behavior of the key components effect with consideration the transfer beam depth with 1/6, 1/8 and 1/10 calculation span. The analysis results indicate that the internal force of the transfer beam, frame-support column of transfer story, shear wall above transfer level and base shear wall is obviously reduced, with the reduction of the transfer beam depth. Comparison with the high-level transfer frame-shear structure, the internal force of the key components of the high-level transfer frame-shear structure with viscous dampers also is reduced. Therefore, the limited demand of the transfer beam sectional dimension and the construction measure of the shear wall could be properly reduced in the high-level transfer frame-shear structure with viscous dampers.
An Analytical Solution for Joint of Prestressed and Precast Concrete Segmental Lining
Authors: Liu Feng Jun , Zhu He Hua , Yu Ning
Published: December 2010

Based on the literatures and the existent researches, the study on segment joint of prestressed concrete lining has been carried out. The analytical solution for calculating the rotational angle of the joint are deduced with the calculation assumption. So the rotating stiffness of joint is obtained. Compared with the experimental results, the numerical calculation suggests that the theoretical equations are reliable. Study shows the slip length of prestressing steel strand near the joint is one key to calculate the rotational angle and rotating stiffness of joint. The matched curve of the slip length with joint bending moment is given in the paper, which can be described by logarithmic function. When the rotational angle of the joint is calculated, the slip length could be regarded as a constant to simplify the calculation.
Experimental Analysis on Strengthening Materials of Orthotropic Steel Bridge Decks
Authors: Wang Yuan Qing , Hu Zong Wen , Pan Peng , Li Yun Sheng , Shi Yong Jiu
Published: December 2010

Application of orthotropic steel bridge decks has become increasingly widespread, but with the growing traffic, the bridge decks frequently get fatigue damage, even forming cracks. This paper makes an overall analysis on the orthotropic steel bridge decks cracks of a certain bridge in Southern China, and experimentally studies on both in-situ and new strengthening materials, including low temperature impact toughness, conventional mechanical properties and fatigue performance. Test conclusions indicate that the two materials have good performance, which means the cracks have no business of in-situ materials, and the strengthening materials can be put into use.
Structural Behavior of RC Cylinders Confined with High Strength Transverse Reinforcement
Authors: Cha Sang A. , Moon Cho Hwa , Kim Sang Woo , Kim Kil Hee , Lee Jung Yoon
Published: December 2010

The number of high-rise reinforced concrete (RC) buildings is steadily increasing since 1980’s. The use of high strength concrete is indispensible for high-rise RC construction to ensure sufficient strength of the structure. The effect of high strength concrete can be significantly improved by the use of high strength and large size reinforcing bars. The yield strength of transverse reinforcement is limited in the current design codes to prevent possible sudden concrete failure due to over reinforcement. This paper presents the effects of the yield strength of transverse reinforcement and compressive strength of concrete on the structural behavior of reinforced concrete cylinders. Two parameters were considered in this investigation: compressive strength of concrete and the yield strength of transverse reinforcement (472MPa, 880MPa, and 1,430 MPa). Analytical and experimental results indicated that the structural behavior of RC cylinders confined with high strength transverse reinforcement is strongly influenced by compressive strength of concrete.
Experimental and Numerical Simulation Study on the Shear Stress for the Interfaces of Anchorage Type Structures
Authors: Zha Zhi Xiang , Peng Wei , Liu Xi La
Published: December 2010

A laboratory test of anchor pull-out model under plane-strain condition on the shear stress transfer for the interfaces of anchorage type structures was carried out in this paper. The results of test were verified by corresponding numerical simulation model. It was proved that the pull-out experimental model under plane-strain condition was an effective model used to research the working mechanism of anchorage structure.