bluuebunny/crossref_metadata_2025 huggingface dataset:
Motion Models of Artificial Animals and Momentarily Continously Switching of the Models
Authors: Yang Guo Wei , Yang Yang
Published: November 2010

Some local motion models of artificial animals and a method momentarily continuously to switch the models are given. A society behaviour system of artificial fishes based on the way and method is exploited, which can exhibit life behaviours and intelligence of animals. How momentarily continuously to switch the motion models of animated agents in the system is better settled. The system can illimitably generalizedly circularly run and has good man-computer interaction. Moreover the appearance, motion and behaviour of the animals in the system are lifelike and convinced. There are not bad visions such as ‘mutation’, ‘suddenly disappearring’, ‘jumpiness’of animated agents.
MAS-Based Urban Rail Transport Ridership Forecast System and Traffic Generation Analysis
Authors: Ding Fei , Zhao Jing Bo , Bei Shao Yi , Liu Hai Mei
Published: November 2010

Ridership forecast of urban rail transport is one of the important bases for urban rail transport network planning, design, construction and operation. MAS-based ridership forecast system was designed and the architecture was proposed. The traffic generation forecast analysis was made from the three aspects of overall size forecast, resident population forecast and floating population forecast. The results showed that the system had the excellence of satisfying the randomness, non-linear and non-deterministic case for the strong adaptability, robustness and flexibility.
The Automatic Transportation Management System of Trucks and Shovels in Open Pit
Authors: Gu Qing Hua , Lu Cai Wu , Jing Shi Gun
Published: November 2010

In view of the request of trucks and shovels transportation automation and the characteristic of complex terrain in open pit, this paper introduces the current advanced RFID(Radio Frequency Identification) and GPRS(General Packet Radio Service). Using these technologies, the automatic transportation management system of trucks and shovels in open pit has been designed and developed. This system not only can count the number of trucks’ delivery and shovels’ loading automatically, but also can manage the vehicles’ transportation in open pit according to the ore proportioning plan. This greatly enhances the trucks and shovels working efficiency in open pit and provides the stable ore for mineral processing. Experiments on real scenes show that this system’s performance is stable, can satisfy production request in open pit and enhance the mine labor productivity greatly.
Analysis on the Internet Addiction and Anti-Obsession Software
Authors: Di Guo Qiang , Yan Cong , Zhang Shao Qun , Liu Fang Yi , Chen Hong Liang , Li Xiao Shan , Guo Hong Lei , Yao Yu Shu , Zhang Jian Chun , Wan Xiao Mei
Published: November 2010

With the rapid development of Internet, Internet addiction has become a social issue of common concern. The different kinds of software have emerged to prevent Internet addiction. This paper analyzes and compares those software. A good prevention software should be good information filtering, to identify different kinds of content, web site, can be used to monitor and control the computer, not conflict with the anti-virus software or firewall, and not introduce other new vulnerabilities, not accounting for more memory and more network resources.
Study on Sedimentary Macrofacies of Sandy Group V of the Second Section of Qingshankou Formation, Daqingzi Region
Authors: Zhang Ming , Zhang Jin Liang , Huo Xiao Min , Lei Cun Lei , Yan Wei
Published: November 2010

According to the core observation and log facies analysis, in the stage of the sand group V of the second section of Qingshankou formation, it mainly develop the delta of type IV which was proposed by Coleman and Wright and in Daqingzi region ,the delta can be classified into two subfacies : delta front and prodelta. The delta front can be divided into underwater distributary channel, river mouth bar, offshore sandbar, coastal sand sheet, interdistributary bay and shallow lake. According to the distribution of sedimentary macrofacies, it can provide guidance to find favorable areas.
Reliability Analysis of Hydrostatic Bearing Cold-Roll Based on Grey System Theory
Authors: Yin Ning Xia , Hou Dong Liang
Published: November 2010

Grey relational analysis of the grey system is applied in pattern recognition of fault diagnosis, which can judge correctly the probability of fault model in cold-roll. The relations of the main components’ mechanical reliability are obtained and it also provides the theoretical basis for actual finding the fault part in design and practical diagnosis.
Algorithm of User Interest Drift Based on Matrix Representation
Authors: Mao Xiao Xing , Ju Shi Guang , Xue An Rong
Published: November 2010

In order to improve the efficiency of user interest drift, proposed an algorithm of user interest drift based on matrix representation. Time Window was brought in to group short-time interest; Semantic Net was used to combine user interest categories; interest weight was replaced by interest rate to show the preference of user interest; considering the sustainability and volatility of interest to calculate the ultimate interest model. Experiment indicated, compared with previous method, this algorithm improved the accuracy of dealing with interest shift.
Application of PCA in Controlling and Reducing Enterprise Logistic Cost
Authors: Qu Zhi Ming
Published: November 2010

Logistic cost is accompanied by logistic activities. A logistic cost is an important indicator to measure the production efficiency of an enterprise. With strengthening the logistic management awareness, how to effectively reduce logistic cost has become a core mission. Using primary components analysis (PCA) and its advantages, influential factors on logistic cost reduction in enterprise material conveying is analyzed. On the basis of PCA model and scores by the experts, the authors computed some results that can reflect logistic cost reduction. Through case study, it can be seen that some factors play very important role and all the reasons should be taken into account because logistic cost reduction depends on the interaction of all the factors. Through analysis and deduction, it is concluded that, under the premise of minimizing the information loss of data, the application of PCA in the investigation on logistic cost reduction in enterprise material conveying approves to be practicable.
Preparation and Hydrophobic Processing of Aluminum-Doped Zinc Oxide Films
Authors: Li Chen , Li Min , Zhang Du Yao
Published: November 2010

In this research, transparent and conductive aluminum-doped zinc oxide (AZO) films were prepared on glass substrates by metal-organic chemical vapor deposition (MOCVD). A nanostructured hydrophobic layer of fluorocarbon (FC) compounds was formed on the films by low-temperature dielectric barrier discharge plasma enhanced chemical vapor deposition (DBD-PECVD), as hydrophobic processing. Scanning electron microscopy (SEM) and contact angle analyzer were used to characterize and analyze the surface morphology, structure and hydrophobicity of these samples. The results indicate that the hydrophobicity of transparent conductive AZO films was enhanced by the deposition of the FC film.
Research on the Coordination Degree of the Linkage Development between Manufacturing and Logistics
Authors: Ji Dong Ya , Zhang Rui
Published: November 2010

Manufacturing is a major driving force and an important pillar for national economic development .It is also an important source to create national income. The current logistics model of manufacturing and the low level of development in logistics industry significantly restricted the industry prosperity and development, and affected the overall strength of the supply chain. The paper firstly explains the relevant research about industrial linkage and coordination degree, and creatively forms development paths of industry linkage between manufacturing and logistics. Then, the paper takes the development situation of the manufacturing and the logistics industry during the period 2000 to 2008 in China as the research object. It builds an evaluation model about coordination of manufacturing and logistics industry linkage in MATLAB, and analyze the change of coordination degree about the manufacturing and logistics of linkage by SPSS. Finally, it concludes the results of the paper in this study.
Slow On-Off Control of Two-State Damping for Electrically Controlled Air Suspension Based on Extended Kalman Filter
Authors: Xu Xing , Li Zhong Xin , Yang Qi Yao , Pan Chao Feng
Published: November 2010

To improve riding performance of the bus with air suspension, the half-car nonlinear model of air suspension was created with the help of analyzing nonlinear character of spring-pneumatic. Slow on-off control of two-state damping was proposed according to the tire deformation and suspension deflection, and the shock absorber with two-state damping was designed by opening and closing the orifice of throttle. It was difficult to obtain the tire deformation directly, and the state-observer of air suspension was proposed based on Extended Kalman Filtering (EKF) algorithm, namely the tire deformation was estimated by the suspension deflection and its relative changing speed. Simulation shows EKF algorithm can estimate the running states well, and the estimating error of RMS is below 10% in 3 seconds and the whole vehicle testing validate that the slow on-off control can enhance the capability of air suspension.
A Novel Stochastic Localization Algorithm for Sensor Nodes in Wireless Sensor Networks
Authors: Wang Ming , Bai Shou Jun , Wang Huan Bao
Published: November 2010

Most of the proposed algorithms focus on static networks of sensors with either static or mobile anchors, in which the Monte Carlo localization algorithm is a typical one for localizing nodes in a mobile wireless sensor network. But the radio range being all different or inconstant in this algorithm leads to reduce the accuracy of localization and the efficiency of the algorithm itself. In this article, we propose the novel rang-based stochastic Monte Carlo localization algorithm for wireless sensor networks specifically designed with mobility to improve the accuracy of localization by dealing with the different radio ranges of sensors, and being bound to the narrow sampling area. Our simulation experimental results show that the rang-based stochastic Monte Carlo localization algorithm has improved the accuracy and stability of the estimated locations.
On Reverse Control Strategy and Anti-Wind Disturbance Analysis of Automotive EPS System
Authors: Zhao Jing Bo , Bei Shao Yi , Zhang Lan Chun
Published: November 2010

Under the special situation of lateral wind disturbance, the lateral direction was resulted from the conventional obverse control strategy and influenced the vehicle stability. The 2-DOF full-vehicle model with the lateral wind disturbance and EPS dynamic model were designed. Reverse control strategy was designed where the EPS motor provided active steering control to prevent vehicle deflection with the input signal of steering torque under the lateral wind disturbance. In the EPS working process, the reverse control strategy and obverse control strategy were switched according to the drive situation to obtain the best vehicle stability. Anti-disturbance simulation was executed and the results shown that the yaw rate, the slideslip angle, the lateral acceleration and the lateral displacement have been weakened, and the vehicle stability is enhanced. The design of reverse control strategy has engineering significance to the overall design, function enhancement and optimization and steering manipulation and safety improvement.
An Effective Hybrid Collaborative Recommendation Algorithm for Alleviating Data Sparsity
Authors: Cheng Guang Hua
Published: November 2010

Every day there is lots of information obtained via the Internet. The problem of information overload is becoming increasingly serious, and we have all experienced the feeling of being overwhelmed. Many researchers and practitioners more attention on building a suitable tool that can help users conserve resources and services that are wanted. Personalized recommendation systems are used to make recommendations for the user invisible elements get to their preferences, which differ in the position, a user from one another in order to provide information based. The paper presented a personalized recommendation approach joins item feature technology and self-organizing map technology. It used the item feature to fill the vacant where necessary, which employing the collaborative recommendation. And then, the presented approach utilized the user based collaborative recommendation to produce the recommendations, which employing the self-organizing map clustering. The recommendation joining item feature and self-organizing map can alleviate the data sparsity problem in the collaborative recommendations.
Research on Investment Decision-Making of the Low-Carbon Industrial Listed Company Based on the Uncertainty Set Pair Analysis
Authors: Chen Jun Fei , Lin Jian Qiao
Published: November 2010

As a new economical development mode, “low-carbon economic” is attracting more and more attention all over the world. In this paper, associating with the development background of the low-carbon industry, we applied the uncertainty set pair analysis (SPA) into the investment decision-making of the listed company, and established the investment decision model based on the uncertainty SPA. As a case, we made investment decision analysis to 12 typical low-carbon industrial listed companies selected. The results show that it is effective and applicable, and the research is helpful for the investors conducting decision-making.
Active Vibration Control of Smart Structure Based on Alternate Driving SMA Actuators
Authors: Jiang En Yu , Zhu Xiao Jin , Shao Yong , Wang Zheng Liang
Published: November 2010

Though with its big restoring force and large deformation characteristic, shape memory alloy (SMA) is commonly used in the research of active vibration control for smart structure, the presence of its thermal hysteresis often leads to bad control performance. A vibration control method based on alternate multichannel driving SMA is proposed to improve the SMA based smart structural vibration control performance by reducing the effect of thermal hysteresis of SMA. The technical methods, the design of the experimental structure, the construction of the experimental platform is illustrated, with the principle and operating process of the experiment and experimental results described. By embedding the SMA driving elements into the epoxy substrate and mounted epoxy plate into the framework of the aircraft prototype, experimental analysis and verification is done. The experimental results show that alternate multichannel driving of SMA for vibration suppression of smart structure is feasible, and the performance is improved to a certain extent.
Research of Complex Behavior of Switching Power Converters
Authors: Jiang Wei , Yuan Fang , Hu Wen Long
Published: November 2010

More and more experts and scholars pay more attention to the research of complex behavior in switching power converters. The research has become an important branch in power electronics. This paper introduces research methods of complex behavior in switching power converter. It includes how to observe complex behavior through building up mathematics modeling and simulation and how to make theoretical analysis to understand the reason occurring complex behavior. Practice proved that the research has a very important practical value and theoretical significance for stability design of switching power converters.
Research on Model Driven Architecture
Authors: Zhang Yuan Yuan , Gao Qin , Wu Heng Liang
Published: November 2010

Model driven architecture (MDA) is an architecture specification of software development proposed by OMG in July 2001. MDA holds that the best way of software development is to enhance the level of abstraction of the system, isolate the design and implementation of the system, and separate the business conduct, so as to overcome the difficulties caused by the complexity of software. This paper presents the basic concept and core technology, and gives the software development process based on MDA.
Mechanical Design of Power Assist Exoskeleton Suit NES-3 Based on Backstay Cable
Authors: Zhang Yuan Shan , Yang Zhi Yong , Wu Guo Sheng , Zhang Jing
Published: November 2010

Exoskeleton suit is a kind of human-machine robot, which combines the human’s intelligence with the power of mechanism. NES-3 is a pure motor actuated power assist exoskeleton suit. A special mechanical design using backstay cable for transmission system is proposed in the paper. The design can depart the motor from its control object which make the leg of NES-3 is very light and reduces the power cosumption of the operator. An extend gas spring is used in the hip joint to conquer the rotation torque of the load. A compress gas spring is used in the knee joint which can make the knee joint bend naturally. The two gas springs also can save the operator’s power cosumption. Detailed mechanical design is showed in the paper and achieves its design objecttive.
Analysis and Simulation of DC-Turned Off High Temperature Superconducting Fault Current Limiter with Saturated Iron Core
Authors: He Yi , Li Chang Bin , Wu Ai Guo , Zhang Xiao Nan , Xin Ying , Gong Wei Zhi
Published: November 2010

This paper analyzes the structure, the physical parameters and the working principle quantitatively of the single-phase DC-turned off High Temperature Superconducting Fault Current Limiter (SFCL) with Saturated Iron Core. On this basis, a dynamic system model is established and simulation to study the relationships among the various system electrical parameters. The simulation results and the actual waveforms collected from the sample machine were compared to verify the correctness of the model. And the simulation experiment shows that this kind of SFCL is available for current limitation.
Cerebral Circulation Network Modeling and Averaging Pathological Analysis
Authors: Sui Jin Xue , Yang Li , Hu Yun An , Zhu Zhi Lin
Published: November 2010

Based on the periodically forced dynamic qualities of the blood circulation system, this paper considered from network and hemodynamics, establishes plane structure diagram of the cerebral circulation. According to the electric circuit graph theory and blood dynamics equation, applies the averaging method to find an approximate solution of this equation. We apply this method in the cerebrovascular network that may help to explain the development processes of venous diseases. Simulation shows that computing result is consistent with blood flow change phenomenon of the clinical observation cerebral infarction.
Denoising of ECG Signal Based on Empirical Mode Decomposition and Adaptive Noise Cancellation
Authors: Yang Ren Di , Zhang Yan Li
Published: November 2010

To remove the noises in ECG and to overcome the disadvantage of the denoising method only based on empirical mode decomposition (EMD), a combination of EMD and adaptive noise cancellation is introduced in this paper. The noisy ECG signals are firstly decomposed into intrinsic mode functions (IMFs) by EMD. Then the IMFs corresponding to noises are used to reconstruct signal. The reconstructed signal as the reference input of adaptive noise cancellation and the noisy ECG as the basic input, the de-noised ECG signal is obtained after adaptive filtering. The de-noised ECG has high signal-to-noise ratio, preferable correlation coefficient and lower mean square error. Through analyzing these performance parameters and testing the denoising method using MIT-BIH Database, the conclusion can be drawn that the combination of EMD and adaptive noise cancellation has considered the frequency distribution of ECG and noises, eliminate the noises effectively and need not to select a proper threshold.
A Existence Theory for Positive Solutions to Superlinear Repulsive Singular Differential Equations with Impulse Effects
Authors: Ying Zhang Xiao , Hong Guan Li
Published: November 2010

In this paper, we study positive solutions to the repulsive singular perturbation Hill equations with impulse effects. It is proved that such a perturbation problem has at least one positive impulsive periodic solution by a nonlinear alternative of Leray--Schauder.
Fault Diagnosis of Automobile ECUs with Data Mining Technologies
Authors: Li Yang , Li Yan Qiang , Wang Zhi Xue
Published: November 2010

With the rapid development of automotive ECUs(Electronic Control Unit), the fault diagnosis becomes increasingly complicated. And the link between fault and symptom becomes less obvious. In order to improve the maintenance quality and efficiency, the paper proposes a fault diagnosis approach based on data mining technologies. By making full use of data stream, we firstly extract fault symptom vectors by processing data stream, and then establish a diagnosis decision tree through the ID3 decision tree algorithm, and finally store the link rules between faults and the related symptoms into historical fault database as a foundation for the fault diagnosis. The database provides the basis of trend judgments for a future fault. To verify this approach, an example of diagnosing faults of entertainment ECU is showed. The test result testifies the reliability and validity of this diagnostic method and reduces the cost of ECU diagnosis.
Investigation of Energy Transportation Channels in China
Authors: Jiang Guang Jun , Liu Hai Bin
Published: November 2010

In order to offer reference for the construction of energy transportation channels in China, we evaluated the existing system with the information entropy theory. By calculating the information entropy for the scale of construction of energy transportation channels with the data of annual investment in the fixed assets from 1986 to 2008, we analyzed the relation between transportation channels and the information entropy combined with the maximum entropy methods. Empirical results show that we should not let the rail transportation channels have excessive investment growth, and then secondly transfer some of the road investment to the transportation channels of waterway or pipeline while finally advance the construction step of the pipeline transportation channels. The quantitative evaluation of the construction scale of energy transportation channels is a important supplement to the traditional research and provide evidence for further development.
Mathematical Modelling for the Quality Evaluation of Baikal Skullcap Root
Authors: Li Ke , Cheng Wei , Liu Xiao Jian , Li Shu Bin , Hou En Guang , Gao Yan , Wang Liang , Liu Qing , Zhao Bo Nian , Yu Zong Yuan
Published: November 2010

In this paper, a model for evaluating the quality of Baikal skullcap root based on the chromatographic fingerprint and pharmacological effect correlation mode was established by using multivariate polynomial fitting technique. This result is new and the accuracy of the model is tested by comparing the modeled results with the experimental data. In addition, a related piece of software was developed. This paper also provides us with a new modelling method for the quality evaluation of traditional Chinese herbal medicine.
Research on the Metadata Storage Mode and Efficiency of Distributed File System Based on HGML
Authors: Miao Fang , Cheng Fu Chao , Yang Wen Hui , Tan Li
Published: November 2010

In the G / S mode, in order to meet the storage demands of massive spatial data, the requirements of the distributed file system (DFS) on back-end servers are extremely high. As one of the core tasks of DFS, the metadata storage is the necessary premise which ensures the reliability and efficiency of the entire system. This paper introduces a metadata storage mode based on HGML, and then designs and implements two solutions, which are scattered storage and integrated storage. According to the different characteristics of the two solutions, access efficiency of the metadata has been tested respectively. The result shows that the new metadata storage mode can basically satisfy the storage demands of massive spatial data.
Fault Diagnosis for Nonlinear Analog Circuit Based on Harmonic Decomposition and Coherent Measurement
Authors: Xu Chen Xi , Zhang Xian Zhi
Published: November 2010

This paper, a fault diagnosis approach for nonlinear dynamic circuit is presented based on harmonic decomposition and coherent measurement. According to the separability of Volterra spectral in weakly nonlinear circuit under AM stimulation, the Volterra response can decompose into linear sub-circuits based on ARMA harmonic decomposition firstly. In linear sub-circuits, the mapping relationship between the fault characteristics and fault states will become more clearly. Then, the dynamic linear sub-circuit is transformed into static circuit by coherent measurement, and the diagnosis equation is created with circuit node-equation. The fault diagnosis can be implemented by calculating the nodes’ fault-current. Finally, with an example to illuminate the proposed is available.
Design of USB Interface Driver for WSNs Node Tester Based on Embedded Linux
Authors: Chen Xu Dong , Kong Ling Cheng , Zhang Zhi Hua , Wang Dan , Mei Tao
Published: November 2010

Based on the analysis of the design of USB peripheral driver program under embedded Linux and considering of the hardware characteristics of USB interface of the Portable WSNs Node Tester, the USB interface drive program for the Portable WSNs Node Tester based on the embedded Linux was designed by the way of kernel module. The WSNs Node connected the Tester through the USB interface, information transmission between the Tester and the WSNs Node was successfully realized.
Establishment of State Variable Model of Aeroengine with Improved Least Square Fitting
Authors: Lin Yi Hui , Zhang Hai Bo
Published: November 2010

The method of state space model fitting is carried out by using the linear relation of the variable of the differential equations and separating the steady process and instant process to eliminate the steady errors course by instant errors. The improved fitting method is without solving the linear differential equations or using any iterative methods. The coefficient of the state space model can be solve simply using matrix operation under the premise of high accuracy, so it has a higher computational efficiency than former least square method. And this method can also be used with other fitting method. Finally, to illustrate the validity and accuracy of the improved method, a small perturbation state space model of a certain turboshaft engine model has been established by this method, and the simulation result between state space model and nonlinear model was also compared. Also, the state space model could be applied to fault diagnosis and control system design for aeroengines.
Application of Wavelet Method on Preprocessing of Voltage Signals
Authors: Wang Li Di , Zhu Nan , Li Jin Kai
Published: November 2010

Wavelet denoising method is applied in the measurement voltage signals in this paper. Noise reduction is important for signal preprocessing in order to achieve many objects such as the improvement of accuracy of modal analysis and electrical parameter identification, the effective extraction of features and auto-matic classification of different kinds of signals. The voltage signals measured from one 35Kv bus are used for the preprocessing research. The denoising effect is evaluated by three parameters, i.e. signal to noise ratio, mean squared error, and capture ability of step points. Compared with the traditional methods including mean filtering and medial filtering, wavelet method is superior in signal to noise ratio and mean squared error.
Surrogate Data Method for Chaotic Characteristic Analysis of Non-Stationary Fault Signals in Rotor System
Authors: Zhang Shuai , Qu Yan Huai , Han Qing Kai
Published: November 2010

An indirect approach for distinguishing chaos, surrogate data method, is proposed and applied to analyze non-stationary fault signals in this paper. Firstly, the theory and algorithm of surrogate data method is investigated. And then the correctness and availability in the analysis of the method is tested by three kinds of typical known time series. Finally, we utilize the approach to analyze two groups of non-stationary fault signals from rotor system. The results show that this method is an effective one to identify chaotic characteristic of non-stationary fault signals quantificationally. It can also provide a new way for nonlinear feature etraction and recognition of rotor system typical faults.
The Influence of Chlorine on the Migration Behavior of Alkali Metal during Biomass and Coal Co-Combustion
Authors: Yang Tian Hua , Xing Wan Li , Kai Xing Ping , Li Run Dong , He Ye Guang
Published: November 2010

Rice straw and Tiefa coal were used as experimental materials. Under the conditions of different temperatures and Cl/K molar ratio, the experiment was performed by using co-firing devices and ion measure instruments (flame photometer and a visible spectrophotometer). The results reveal that the majority of alkali metals and chlorine are released to gas phase by the precipitation of alkali chloride and HCl(g) above 700°C. Alkali metals release increase with the raising of chlorine content in raw materials. Alkali metals release related to sulfur, silicon and aluminum etc.
Analytic Solutions and Digital Features for Two Contact Rough Surfaces
Authors: Tian Hong Liang , Liu Hong Qi , Li Bin , Mao Kuan Min , Gu Pei Hua
Published: November 2010

Applying GW model simple exponential probability density to approximate the Gaussian one is not explicit for some cases. Some practical closed form analytic solutions were derived for the contact load, contact area and contact spot number for both GW elastic contact model and CEB elastic-plastic contact model by the generalized exponential probability density fitting the Gaussian one.
Fuzzy Comprehensive Evaluation Method for Electric Safety in Plants and Mines
Authors: Jiang Jing , Zhang Xue Song
Published: November 2010

In this paper, the analytic hierarchy theory and fuzzy mathematics method from ergonomics perspective were used to research reliability of the electrical safety evaluation system from coal mining enterprises. In view of ambiguity and randomness of the evaluation system, the multi-level electrical hazard evaluation system was established and the objective weights were calculated on expert consultation method. Finally, the evaluation procedure and evaluation model from a large coal mining enterprises was given. The experimental results show that the evaluation system has a certain engineering value.
Engineering-Oriented Hybrid Genetic Algorithm for Frequency Assignment Problem
Authors: Zhou Ting Ting , Zheng Ying , Chen Ming
Published: November 2010

Since the usable range of the frequency spectrum is limited, the frequency assignment problem (FAP) is important in mobile telephone communication. In this paper, according to the characteristics of engineering- oriented FAP, an engineering-oriented hybrid genetic algorithm (EHGA) based on traditional genetic algorithm (TGA) is proposed, combined with particle swarm optimization (PSO) and simulated annealing (SA). The results obtained by the simulation to a real-word FAP case in GSM show that the algorithm we proposed is a better approach to solve the engineering-oriented FAP.
On the Science and Technology Innovation in the Macroeconomic Framework
Authors: Lu Xia
Published: November 2010

Science and technology innovation is the power of enterprise development, since the 1980s, A series of science and technology policies have been formulated according to the needs in different periods. Because the policy varies in different circumstances, science and technology innovation environment, such as social innovation atmosphere, information and service supply still depend on the creation of local authority. Therefore, this paper defines the framework of the technology innovation, takes up the countermeasure of improving local innovation in science and technology, including: create favorable policy environment, and build scientific and technological innovation atmosphere, guide the limited resources, technology intermediary market, so as to coordinate and support local technology innovation and achieve the goal of the coordinate development of the science& technology, economy and society. Technological innovation is the originality of scientific research and technological innovation, refers to the floorboard of creation and application of new technology, new knowledge, new technology, using the new mode of production and management model, and develop new products, improve product quality, provide the new service process. Macro frame is refers to the macro-control of laws, regulations and policies, China national science and technology innovation policy innovation of science and technology is the place where, macro frame to support science and technology innovation in the science and technology to implement national policy.
Bandwidth Balancing Design of Miniaturized Tunable Coaxial Cavity Filter
Authors: Wu Xin Hui , Li Jing , Qin Chang Hai , Zhang Zhong Hai
Published: November 2010

This paper proposes a method of the coupling modal, which is able to miniaturize the tunable cavity filter while keeping its bandwidth balancing. The filter consists of a tunable cavity dual-bandpass filter and a triangular twin-loop as its inter-cavities coupling structure. We analyzed and calculated the bandwidth of the filter changing with the size and position of the triangular twin-loop. To prove the advancement of the design, a tunable coaxial cavity dual-bandpass filter operating at 230MHz and 409MHz was fabricated and measured. The size is less then a half that of the conventional tunable filter with same specifications. The insertion loss is lower than 1.2dB at operating frequencies. And the bandwidth in lowband and highband are both more than 2.5MHz with the insertion loss less then 3dB. Experiment results and theoretic analysis agree well. This novel model can contribute to the miniaturization of RF and microwave systems with high quality.
An Effective Strategy to Defense Black Hole Attack Based on AODV Routing Protocol
Authors: Chen Xiao Yun , Yao Yu Kai , Liu Guo Hua , Li Long Jie
Published: November 2010

Mobile Ad hoc Network (MANET) has attracted lots of research efforts these years, mainly due to its appealing applications in no infrastructure situations such as battle fields and disaster recovery operations [1]. In this paper, we explore wireless Ad Hoc network focusing on its Routing Protocol AODV, we in depth analyze its operation principles and the problems exist in AODV routing protocol. AODV routing protocol is vulnerable, it is always exposed to many attacks, such as DoS, black hole, etc. [2] Through exhaustive researching the behaviors of black hole attack in NS2 simulation platform, and we finally propose a new routing security strategy to defense the black hole attack in AODV. Simulation results show that the strategy we proposed can not only effectively defense the black hole nodes, but also has better routing performance for moderate or small scale Ad Hoc Networks.
The Research of Electromagnetic Interference in Metro Signal System
Authors: He Lin Na , Yin Wei
Published: November 2010

This paper analyzes the Metro signal system , the causes of electromagnetic interference, the ways to anti-electromagnetic interference and measures. First, Analyzing commonly used structures and equipment in the Metro signal system, and then Analyzing the various electromagnetic interference signals in the Metro signal system, Finally, the proposed methods and measures for Anti-electromagnetic interference in the Metro signal system.
A Key Management Scheme Based on Double Matrix CPK for Mobile Ad Hoc Networks
Authors: Li Hong Xin , Su Jin Hai , Zhang Chuan Fu , Shao Chun Yu
Published: November 2010

A robust and efficient key management scheme is necessary for mobile ad hoc networks (MANETs) to ensure its security. CPK (Combined Public Key) is a recently developed public key algorithm, which has advantages comparing with other public key system, such as low storage overhead and calculation demand. Some key management approaches based on CPK have been proposed for MANETs in recent years. However, CPK is vulnerable to collusion attack which may bring about terrible threats. In this paper, a novel key management scheme based on double matrix CPK (DMCPK) is put forward, which is resistant to collusion attack. This key management scheme is described in details, including key generation and updating. Simulation experiments are implemented based on the simulation tool OPNET and show the effectiveness of the proposed scheme.
An Approach to Subtype Recognition and Extraction of Informative Genes for SRBCT
Authors: He Ai Xiang , Wang Yong Qiang , Shi Yan Rong
Published: November 2010

An approach to tumor molecular classification based on their gene expression profiles was presented. A new measure known as Between-groups to within-groups sums of squares ratio (BSS/WSS) was used as the criterion of screening predictive genes for SRBCT subtype recognition. The 152 genes were chosen by this criterion and formed the feature set whose subsets would be used to create MSVM models to identify the subtypes. The trained MSVM based on the top 25 genes ranked by BSS/WSS was able to achieve 100% accuracy on the training and blind test dataset. Then this subset was analyzed by the dissimilarity distance to remove its redundancy. As a result, the 15 genes were retained with the same accuracy as the subset of 25 genes and were regarded as the final subset. Comparison with other methods demonstrates efficiency and feasibility of the method and the predictive models proposed in this work.
Analysis of the Realization Approach to the Eco-Friendly Transportation Management
Authors: Yuan Jin Ming , Yang Ju
Published: November 2010

The transportation is the core functional elements in the logistics activities. If not focusing on implementation of eco-friendly management in the process of logistic transportation, it is impossible to build an eco-friendly logistic system as a whole. Developed countries attach great importance to environmental issues and spare no effort in promoting the reform of logistics transportation. In order to comply with sustainable development in society and economy, China's transportation industry is urgently in need of more scientific management. Based on the relevant issues of current logistic transportation, from the perspectives of multi-subject such as the government, the enterprises and the public, this article analyzes the feasible approach to achieving the eco-friendly transportation management to ensure harmonious development of efficient transportation, social economy, environment and resources.
Hydrated Lime Content in Asphalt Mastic Based on High Temperature Performances
Authors: Chen Jing , Zhou Liang , Yan Zeng Hui
Published: November 2010

Hydrated lime content in asphalt mastic greatly influences the performances of asphalt mixture. The aim of this paper is to study the hydrated lime to the high temperature characters, resist ability of aging, together with workability. Asphalt mastic made with different content of hydrated lime was used in Dynamic Shear Rheological and Viscosity Tests. The optimum hydrated lime content was proposed in terms of test results above. The results illustrated that hydrated lime was an appropriate addition agent which can improve asphalt mastic properties greatly, however, too much hydrated lime may result in the decrease of asphalt mixture performances, substitution of 30% hydrated lime was proposed as an upper limit.
The Research on Dynamic Friction Tester of Pavement
Authors: Li Deng Feng , Guan Li Min , Zhang Qi Ming , Zhao Cai Xia
Published: November 2010

As to the pavement test, with the slip-based control method, a new pavement mobile type of measuring device was designed to obtain the continuous friction coefficient parameters in this paper. The operation principles and the concrete completion methods of slip ratio control were introduced in detail. 89C52 was adopted as the center chip to achieve the system design of hardware and software. After the pavement tests, the prototype is of high reliability, low cost, and simple operation, meanwhile, meets the requirements of pavement skid resistance.
Research on Sample Distribution Method in Maintainability Test
Authors: Sun Lei , Jia Yun Xian
Published: November 2010

This paper analyzes the origin of maintainability test sample, discusses the problems which exists in the selection process of similar maintenance tasks in GJB2072-94, provides the first level of sample grouping methods based on equipment entity and work relationship of maintenance, and also puts forward the method of maintenance task similarity degree in the second level of sample grouping by maintenance time.
Model Order Reduction for Pre-Stressed Harmonic Analysis of Micromechanical Beam Resonators
Authors: Shi Jian , Xu Ben Lian
Published: November 2010

A second-order system model order reduction method for pre-stressed harmonic analysis of electrostatically actuated microbeams is demonstrated, which produces a low dimensional approximation of the original system and enables a substantial reduction of simulation time. The moment matching property for second-order dynamic systems is studied and the block Arnoldi algorithm is adopted for the generation of the Krylov subspace, which extracts the low order model from the discretized system assembled through finite element analysis. The difference between two successive reduced models suggests the choice of the order for the reduce model. A detailed comparison research among the full model and the reduced models is performed. The research results confirm the effectiveness of the presented method.
The Design of Cam Exciter Mechanism for Beach-Cleaner
Authors: Zeng Ling Jun , Huang Hong Wu
Published: November 2010

Because the cleaning effect for beach cleaning equipments imported from abroad is not ideal．Considering the character of sand, according the theory of vibrating machine to choose the optimal parameters of vibrating sieve, make sure the characteristics of motion for the vibrating sieve. Take advantage of Flock approximation to solve base radius and eccentricity of the cam; generate theoretical profile curve of the cam directly and three-dimensional model in NX
Modeling of Road Network Capacity Research in Urban Central Area
Authors: Chen Hong , Zhou Ji Biao , Wu Yao , Zhu Hui Fang , Guo Yan Yong
Published: November 2010

The analysis and modeling of road network capacity provides a useful measure for urban planning and traffic management. Therefore, the primary purpose of this research is to construct a novel approach of modeling the capacity of road network, based on the theory of space and time consumption. Based on the analysis of model parameters, a bi-level model is proposed to determine and optimize the capacity of road network Meanwhile, this paper elaborates on solution algorithm for its upper and lower level model. Taking the area of Ming Dynasty City Wall in Xi’an, China into account as a case study, the effectiveness of this proposed model is verified. The results presents that the model’s validity is verified. The results show that the main road network capacity in city wall of Ming Dynasty is 721883 pcu/d.
A Study on Innovative Efficiency Evaluation in Industrial Sectors Based on SUPER-SBM DEA Model：An Empirical Analysis from Shandong Province
Authors: Song Ying Jie
Published: November 2010

This paper, based on an analysis of inherent features of scientific innovations through SUPER-SBM DEA model, constructs input and output index and conducts an empirical analysis on innovative efficiencies in industrial sectors in Shandong Province using the data from 2003 to 2008. Through the calculation of Super efficiency DEA value,the author points out that irrational structure of element input, low efficiency in the arrangement of scientific researchers and outlay use as well as the low efficiency of resource transformation are the restrictive factors that influence scientific innovative efficiency of industrial enterprises. The suggestions are finally put forward as follows: emphasis on structural adjustment of scientific innovative resources; cultivation and introduction of high-quality professionals; government’s promotion of innovative enterprises’ development, etc.
Design and Implementation of Intelligent Track-Searching Vehicle Based on Photoelectric Sensor
Authors: Xu Hong Ke , Ma Chun Cheng , Guo Xun Zhao , Wen Chang Bao
Published: November 2010

To meet the requirements of smoothness and flexibility, an intelligent track-searching vehicle is designed to run fast and smoothly on different tracks. It is equipped with a MC9S12DG128 SCM as core, a steering engine, a motor-control module and other modules. The continuous path recognition algorithm is applied to collect track information, and the optimized PID control algorithm is used to control the intelligent vehicle’s steering engine and motor. The experimental results show that the detection accuracy of intelligent vehicle is significantly increased; its sensitivity and stability are also obviously improved, achieving the fundamental goal of high speed of intelligent track-searching vehicle.
Surgical Skill Evaluation Model for Virtual Surgical Training
Authors: Liang Hui , Shi Min Yong
Published: November 2010

As a safe, cost-effective, and easily accessible tool for gaining experience in surgery, the simulation-based surgical skill training has attracted more and more attention in modern hospitals and institutes. One of the most important advantages of virtual surgical training is affording useful instructional feedback to users. However, how to provide systemic and competitive surgical technique evaluation to trainees is still untouched. In this paper, for UK’s Royal Bournemouth Hospital virtual surgery system, we creatively constructed a surgical technique evaluation model which consists of static structure and dynamic process, as well as an index system which covers aspects of surgery performance.
Study on Line Managers’ Competence-Based Abilities of Performance Management
Authors: Li Mei Yan , Liu Ying Zong
Published: November 2010

The line manager, playing a role to promote and implement the performance management system, is the key to system’s success. A line manager’s ability to manage performance determines the level of subordinates’ performance, and then influences the efficiency of performance management system. This paper first gave the definition of ability to manage performance for a line manager, and then according to the Gallup’s research, pointed out the competence characteristics for line managers’ abilities to manage performance, which involves communication capacity, encourage ability, authorizing and coaching capability. Line managers possessing higher level of abilities to manage performance can stimulate the performance potential of subordinates, enhance the work performance of subordinates, and then improve sector and organization performance.