bluuebunny/crossref_metadata_2025 huggingface dataset:
Accelerating Unpopular Channel through Federation
Authors: He Jing , Zhou Wei , Wang Shi Pu
Published: September 2013

Nowadays, peer-to-peer technology has provided users with cheap and powerful communicating facilities. However, P2P streaming system faces two challenges. Firstly, how to improve the poor Quality-of-Experience (QoE) in unpopular channel? Secondly, how to select peers to contribute their resources for assisting the unpopular channel in order to balance channel resources? This paper presents a cross-channel federation model to address these problems. The key idea is to identify a set of stable nodes in popular channel to assist the unpopular channel. These stable nodes, together with nodes in unpopular channel, are organized as mesh-based network, which facilitates the unpopular channel to enlarge the channel group and promote peer stability. This cross-channel federation model is evaluated through simulations. The results demonstrate its efficiency.
Research of the Transient Temperature Field and Friction Properties on Disc Brakes
Authors: Zhang Jian , Xia Chang Gao
Published: September 2013

According to the real dimension of the braking disc, the finite element modeling for three-dimensional transient cyclic symmetry during the long downhill braking is established. The distribution of the transient temperature field of the brake disc during the braking are analyzed. The variation of the friction factor combined with the temperature characteristics of the friction factor during the braking are analyzed. The analysis result show: During the braking, the temperature of the brake rises increasingly and reaches the top temperature of 316.04°C at the end of braking process, the high temperature section concentrates in the far area of the friction surface; The changes of the friction factor is relatively stable during the long downhill braking. There is no obvious thermal recession. (Abstract)
Cyber Security Situation Awareness Based on Data Mining
Authors: Liu Jie , Feng Xue Wei , Li Jin , Wang Dong Xia
Published: September 2013

Situation awareness is a kind of the third generation of information security technology, which aims to provide the global security views of the cyberspace for administrators. A framework of cyber security situation awareness based on data mining is proposed in this paper. The framework can be viewed from two perspectives, one is data flow, which presents the abstracting of cyber data, and the other one is logic view, which presents the procedure of situation awareness. The frameworks core component is correlation state machine, which is an extension of state machine. The correlation state machine is a data structure of achieving situation awareness, which is created based on the technology of data mining. After being created, it can be used to assess and predict the threat situation to achieve cyber knowledge. We conclude with an example of how the framework can be applied to real world to provide cyber security situation for administrators.
Simulation of Electromagnetic Launch Type Tear Weapon System
Authors: Wang Men , Liu Zi Ming
Published: September 2013

In the process of tear the launch of weapon system, discharge voltage, capacitance, and the difference of Tear gas initial position, will affect the size of the tear gas exit velocity. In order to make the next step of the experiment platform ammunition exit velocity reach the expected target, we need to determine the appropriate size of those parameters. To a single induction coil launch unit as an example, using the Matlab software to establish the mathematical model of single stage induction coil launch unit, and then to the projectile export rate as the objective function, adopting axisymmetric coil magnetic field numerical calculation method and the differential equation of the forward difference method to solve the mathematical model to solve the problem, the simulation analysis of the discharge voltage, capacitance, and the Tear gas projectile from the initial position of the exit velocity, the influence of the discharge voltage, capacitance, and the Tear gas is obtained initial position relations with tear gas exit velocity curve, determine the size of the voltage, capacitance size, the size of the initial distance option.
The Design of Electromagnetic Heating Furnace Based on Bridge Type Inverter
Authors: Jiang Lian Zhi
Published: September 2013

This paper introduce a power regulator controlled technology using bridge type inverter, and apply it to the design of electromagnetic heating furnace. The main circuit, principle, control scheme and how to design of the heating furnace are described. The heating furnace proved to be low cost, low weight, low volume, high efficience of output. The routes and technical details, this paper dealed with, has the reference value in the relevant industry design.
Remote Video Surveillance System Based on Direct Show and Image Compression
Authors: Gong Shang Fu , Wu Li Gang , Wang Yan Jun
Published: September 2013

Video surveillance, convenience and rich information, has been widely used in security, protection, monitoring and other occasions, and has already been one of the most important precautionary measures in commercial, residential and transportation areas. However, considering the massive data transmission needs and higher real-time requirements for video surveillance, a remote video surveillance plan has been put forward on the analysis basis of Microsoft DirectShow and Image Compression. This plan adopts the C/S structure, adapts to the requirements of real-time video transmission, with a better fluency. In addition, the picture clarity satisfies the application requirements.
Impact of Automation to Maritime Technology
Authors: Ding Song , Han Duan Feng , Zhang Bo Shi
Published: September 2013

Due to incredibly advancing technology and reduced manning levels in the maritime industry there is now a cultural shift in the maritime industry toward increased levels of automation in tasks, particularly with regard to navigation systems. But there are two sides to the automation advances. Increasing automation causes the loss of situation awareness, which can significantly affect performance in abnormal, time-critical circumstances. This paper presents an overview of the application of automation in marine system and its impact to the systems performance.
The Resin Radial Flow Numerical Simulation in Dual-Scale Porous Fibre Media at Constant Pressure
Authors: Chen Xiao Jiang , Guo Si Jia , Yan Wen Yan , Yan Shi Lin
Published: September 2013

In this paper, setting up a mathematical model about LCM process based on the theory, which contains a sink term in the mass balance equation of the fluid dynamics. In two-dimensional mold, the finite element/control volume method is used to simulate the flow front and pressure distribution of the flowing resin in single-scale and dual-scale porous media at constant pressure.
Research of Electric Power Steering System Assistance Characteristic Based on the Identification of the Road
Authors: Li Qiang , Xia Chang Gao
Published: September 2013

Study of traditional assist characteristic cure does not take into account the difference of steering resistance torque caused by different road adhesion coefficient. Vehicle dynamics analysis model is established based on ADAMS/CAR. Simulation of steering wheel torque is realized under different road conditions. Departure from the ideal boost characteristics requirements and combined with ideal steering wheel torque under different speed and lateral acceleration., the article built assist characteristic curve under a certain road conditions. The system can real-time select the assist characteristic curve through identifying the vehicle traveling road conditions by the way of BP neural network. The theory provided a feasible method for the improvement of the EPS system performance.
Irreversible Thermodynamic Discussions about Ferroelectric Phase Transitions
Authors: Wang Jin Song
Published: September 2013

The irreversibility of ferroelectric phase transitions has been studied by using the irreversible thermodynamics. The thermal hysteresis of first-order ferroelectric phase transitions and the polydomain structure of ferroelectrics can be explained on the basis of the principle of minimum entropy production. A conclusion has been derived that the thermal hysteresis is not an intrinsic property of a system in which a first-order ferroelectric phase transition occurs. The finiteness of the systems surface is connected with the thermal hysteresis.
The Reverse-Engineering-Based Design of Three-Dimensional CAD Parameterized Organic Morphology Mold
Authors: Ye Wu , Liang Ruo Yu
Published: September 2013

Gives the method of 3D CAD parametric design under the guidance of the theory of reverse engineering. Describes the application of the method development process of complex-shaped surface mold. Analysis of the mold characteristics, coordinate measuring equipment accurate and efficient access to the basic outline of the data, the integration of CAD software to design mold forms, re-use processing module directly form processing code, complete mold processing and validation.
The Research of the AC Servo Control System for Shroud Removal Based on PMAC
Authors: Xie Xing Xian , Liu Yan
Published: September 2013

The shroud removal system is an important part of the cryogenic target project. Based on research status of the cryogenic target shroud removal system, this paper presents a solution of AC servo control system using programmable multi-axis controller. The superior performance of the controller and the latest technology of AC servo control system provide a strong support for the solution. We complete the hardware system design and the development of PC software control system. On this basis, we carry out the shroud removal experiment. The experimental results show that the solution can basically reach the technical specifications of the cryogenic target shroud removal system.
Large Size Static Pressure Box Airflow Distribution
Authors: Liu Guo Dan , Wang Xin Xin , Wang Xuan , Qi Feng , Wang Gang , Hu Song Tao
Published: September 2013

This paper mainly studies at the different way of ventilation to the influence of air distribution in the large size plenum. The model is a grand theatre stalls. To model the plenum which under the grand theatre stalls,and took out the size of large mutations alone modeling and studying it. the six different way of ventilation: small plenum with four directions supply air; Take a duct with four tuyere on supply air; Single tuyere withside air supply; Tuyere parallel supply air; Single tuyere with air supply under; Take a duct with four draught under supply air have influence of air distribution.And combined with the well of heat insulation in the large size plenum.It can use the standard RNG turbulence model, and the pressure interpolation adopt standard discrete format, the convection item of the momentum equations, k equation, ε equation adopt with second order the format. the pressure speed coupling adopt Simple algorithm. Finally through the FLUENT software were used. It can use the air balance coefficient wich is one evaluation index to analyz Simulation results of the Six air distribution mode . Through the analysis and comparison with a wind that four tuyere air supply under Static pressure boxair supply the best effect, the static pressure air distribution most evenly
Computer Simulation Technology Application in Hydraulic System Analysis and Design
Authors: Hu Xiao Ping , You Zhang Ping
Published: September 2013

With the development of mechanics and computer technology, computer simulation has become an important tool in the hydraulic system analysis and design. The application of computer simulation technology in hydraulic system is introduced in this paper. A hydraulic servo system was modeled by standard procedures. By simple operation of the software, named MATLAB/Simulink, dynamic characteristics of the hydraulic servo system are simulated. The result of the simulation verifies the validity of the method, which is applied in research.
Shock Resistance of a Marine Pump
Authors: Wang Chang Yue , Wang Ji , Zheng Jian Hua
Published: September 2013

Numerical method is used to build the entity model and finite element model of a marine pump, modal analysis shows that modal frequency is not equal to the operating frequency and the resonance is not produced in the pump. The finite element method is used to calculate the shock load which is the request of GJB. The allowable strength at vertical, longitudinal and horizontal direction of the pump is analyzed, and the anti-shock behavior of the pump is checked too. The results show this type pumps are not destroyed wholly and can be working normally in the shock environment, which satisfy the requirements of GJB. But the bracket position of the pump is suffered great compressive stress which leads to the designed and strengthened again.
Design of Interactive Intelligent Family Utilization System in Smart Grid
Authors: Liu Xu Sheng , He Ying , Zhang Fu Chun , Yan Guang Hua , Wu Run Ze
Published: September 2013

Intelligent power utilization is an important part in the construction of smart grid, its outstanding characteristic is interaction between power grid and demand side. Based on the demand of family intelligent power utilization, this paper analyzes the significance of bilateral interaction system construction, proposes the design scheme of interactive family intelligent power utilization system to satisfy the users various and individual demands, designs intelligent display client software. The system integrating power flow, information flow and business flow is established in order to support new power supply and demand relationship between grid and users and ensure the QoE (Quality of Experience) and optimize the configuration of assets of power grid.
Rule-Based Data-Driven Thematic Mapping Technique
Authors: Zeng Hong Yun , Wang Lv Hua , Xie Zhi Qiang , Zeng Wei Bo
Published: September 2013

Mapping automation is not only a key objective of cartology, but also a study hotspot of geo-spatial information science at present. Here, we take thematic mapping of river channels (pipelines) passing through Yunnan in Kunming City for example to study and discuss, with regard to the effect required by complicated mapping encountering in the process of project implementation and the requirements on high quality of mapping data, the representation of rule-based data-driven computer mapping by the Representation technique of Arcgis9.3 to partly accomplish such mapping task that needs a lot of manual editing in traditional mapping mode, especially achieve the some kinds of mapping effect that cannot be achieved by traditional mapping without destructing GIS spatial information. The findings indicate that, the representation technique of rule-based driven computer mapping can reflect the advantages of both GIS spatial database establishment and mapping. This technique can make map rapidly according to different data requirements, and achieve the effect of traditional mapping. Due to less demand on manpower and financial capacity, such technique has a broad prospect of promotion and engineering application.
Modeling and Feature Extraction from the Noise of Underwater Vehicle Propeller Startup
Authors: Jiang Xiang Dong , Huang Fu Li , Tang Jian Sheng , Pan Yue
Published: September 2013

A noise model of underwater vehicle engine startup is proposed in this paper. Based on this model, a feature extraction method for time variety spectrum of engine startup is introduced. This method using hough transform to cumulate the points of the same spectrum lines in time-frequency space and detect the peaks in transform space. Simulation and data processing result show that the method can estimate the parameter of spectrum lines precisely.
Numerical Investigation on Shock-Induced Separation Structure of Supercritical Airfoil
Authors: Xu Xin , Liu Da Wei , Chen De Hua , Wang Yuan Jing
Published: September 2013

The supercritical airfoil has been widely applied to large airplanes for sake of high aerodynamic efficiency. But at transonic speeds, the complicated shock-induced separation on the upper surface of supercritical airfoil will change the aerodynamic characteristics. The transonic flows over a typical supercritical airfoil CH were numerically investigated in this paper, in order to analyses different shock-induced separation structure. The two-dimensional Navier-Stokes equations were solved with structure grids by utilizing the S-A turbulence model. The computation attack angles of CH airfoil varied from 0oto 4o, Mach numbers varied from 0.74 to 0.82 while Reynolds numbers varied from 3×106to 50×106per airfoil chord. It is shown that with the attack angle increases, the separation bubble occurred on the upper surface first, then the trailing-edge separation occurred, the trailing-edge would separate totally at last. The different separation structure would result in different pressure coefficient distribution and boundary layer thickness.
Bit Selection of Carbonate Formation Based on Fuzzy Clustering Method
Authors: Tang Xiao Yan
Published: September 2013

t is important to increase drilling speed and reduce drilling costs that select the rational bit. A common method is used to select bit types based on the rock mechanical parameters of the drillability. The rock mechanical parameters which are the compressive strength, shear strength, rock hardness and abrasiveness have been not considered during select bit types of carbonate formation, so that the selected bit types are not practical. The rock mechanical parameters of indoor test are costly, and the data points are not continuous. In view of this, these rock mechanical parameters are calculated using logging data that reflect the rich rock mechanical properties. Combined with the manufacturers instructions of bit types, these rock mechanics parameters were clustered using fuzzy clustering method, and then the bit types are selected according to the clustering results. This method was applied to the bit selection of carbonate formation in the eastern of Sichuan, the results show that this method can effectively select bit types of the carbonate section.
Study of Knowledge Reasoning in Supply Chain
Authors: Lu Yi Qing , Hu Min , Li Chen
Published: September 2013

The knowledge reasoning can be used by the inference engine to acquire the implicit knowledge in supply chain,. The reasoning based on the ontology semantic can be directly used the rules and axiom. Four kinds of semantic relations are studied in this paper. Then the Tool of establish reasoning rules is introduced.
Feature Extraction for Classification of Proteomic Profile
Authors: Yang Xiao Li , He Qiong , Yang Fen
Published: September 2013

This work studies on feature extraction for classification of proteomic profile. We evaluated four methods, including principal component analysis (PCA), independent component analysis (ICA), locally linear embedding (LLE) and weighted maximum margin criterion (WMMC). PCA, ICA and LLE extract features based on traditional low-dimension map technique. Comparatively, WMMC extracts features according to classification goal. To study classification performance of PCA, ICA, LLE and WMMC in detail, we used two well known classification methods, support vector machine (SVM) and Fisher discriminant analysis (FDA), to classify profiles. The results show WMMC having relatively good performance due to its prediction accuracy, sensitivity and specificity for diagnosis; it can correctly identify features with high discrimination ability from high-dimensional proteomic profile. When feature set size was reduced less than 10, PCA, ICA and LLE lose a lot of classification information, and the prediction accuracies are less than 90%. However, WMMC can extract most classification information. Its prediction accuracies, sensitivities and specificities are more than 95%. Obviously, WMMC is more suitable to proteomic profile classification. For classifier, FDA is sensible to feature extraction.
Traffic Signal Control and Simulation of Single Intersection Based on Fuzzy Control
Authors: Xiao Hong Xiang , Zhu Ye Fu
Published: September 2013

In this paper, they are proposed that the Agent-based single intersection traffic control and analysis of the basic structure of a single intersection based on Agent, modeling them. Single intersection is the basic control unit of the entire transportation system. The superior single intersection control is protecting transport network uptime. Agent-based traffic control combines the advantage of fuzzy control in complex transportation system; the fuzzy control technology used in traffic lights control decisions
Health Assessment of Aircraft Based on Wavelet Neural Network
Authors: Zhao Chen Guang , Qi Xu Ping , Mi Chen Ming , Miao Teng Fei
Published: September 2013

Health assessment is one of the key technology in the aircraft operating system. Aiming at the characteristic of aircraft structure, the aircraft fault prediction method based on data mining is presented in this paper. The concept of health assessment is introduced first, the wavelet neural network provide the mathematical model reflecting aircraft health state. The experiment results show that the health prediction applying wavelet neural network works well with high fidelity and real time. Focusing at a typical heavy-duty gas turbine, the critical information collected by the sensor is applied as the network input, then the wavelet neural network is constructed, the quick training and learning speed is proved. The results indicate proposed approach is promising for reliable diagnostics of aircraft.
A 3-D Calculation of Electromagnetic Field in a Multiphase Induction Motor
Authors: Song Wen Yu
Published: September 2013

Three-dimensional finite element analysis of harmonic electromagnetic field in a large and complex structure 15-phase induction machine has been completed. Accurate 3D finite element machine model is established. The current density of stator and rotor and the entire vector flux density distribution are given, then been analyzed and explained. 3D air gap radial flux density is obtained and has been made harmonic analysis. We can get more accurate electromagnetic field distribution and performance parameters through 3D finite element calculation of electromagnetic field. This method can give theoretical basis for the multiphase machine development of new structure and can play reference in terms of structural optimization design.
Automatic Hexahedral Mesh of Concrete Box Girder with the Vertical Section Method
Authors: Zhao Wen Pu , Zhao Qing Yun , Lu Zhi Qiang , Yu Shi Hua
Published: September 2013

According to the geometric characteristics of concrete box girder structure, the author proposed a way to automatically complete the concrete box girder with automatic hexahedral mesh subdivision algorithm-the vertical section method. After introducing its computing ideas, it will be applied to engineering examples to verify its feasibility.
Modeling and Simulation of Asynchronous Motor in αβ Coordinate System Based on Matlab
Authors: Li Yi Ming , Wang Yue Bin , Yan Quan Feng , Huang Wei
Published: September 2013

Asynchronous motor has simple structure, low cost, comparable to DC motor control performance when using the vector control technology. This paper focuses on the three-phase asynchronous motor which account for most of the proportion of the AC machines. Firstly, this paper builds the vector control system of asynchronous motor, then deduces the mathematical models of asynchronous motor based on coordinate system. At last the paper builds the simulation model of asynchronous motor based on coordinate system in Matlab/Simulink, and the paper gives and analyzes the simulation results. The simulation results verify the correctness of the theory of asynchronous motor based on coordinate system.
Simulation Research of a Type of Pressure Vessel under Complex Loading Part 1 Component Load of the Numerical Analysis
Authors: Zhang Yu Fu , Guo Hui Xia , Li Jun Chen , Yang Gui Rong , Ma Ying , Song Wen Min , Sheng Jie , Hao Yuan
Published: September 2013

Macroscopic mechanical response is one of the key factors in designing pressure vessel. A geometric modeling of pressure vessel was established and the mesh of this modeling then generated by using the finite element simulating methods in software ABAQUS. Loading and boundary conditions of dead weight, hydraulic and uniform internal pressure which often suffered pressure vessel were set and calculated by the finite element method. Stress/strain response of pressure vessel in all kinds of alone loading ways were obtained. The results of finite element simulating were in accordance with those of theoretical calculation which provided useful data for research on mechanical response of pressure vessel under complex loading conditions.
Simulation Research of a Type of Pressure Vessel under Complex Loading Part 2 Complex Load of the Numerical Analysis
Authors: Li Jun Chen , Sheng Jie , Fu Zhang Yu
Published: September 2013

Loading of pressure vessel was usually complicated in practical service operating conditions. Simulation model of pressure vessel was built by method of finite element simulation analysis, and structured mesh generation was realized. Numerical calculation was come true, stress/strain distribution of pressure vessel was obtained in applying of the multi-load. On this basis, this condition compared with alone applied many loadings. The calculation results indicate the validity of this model, and results are evaluated according to relevant standards, which provide a way to study mechanical response in the actual working conditions. In addition, sub-model is analyzed for key part of pressure vessel, and transition is come true from large scale simulation to small scale simulation.
Characteristics of Jurassic Source Rocks in the North Ustyurt Basin
Authors: Zhou Tian Wei , Zheng Jun Zhang , Zhang Zhi Wei , Wu Tie Zhuang , Guo Jian Jun
Published: September 2013

The North Ustyurt basin, located in Central Asia, is an important gas-bearing potential area, but the gas source has been the key difficult point. Based on the geo-chemical analysis of Jurassic mudstone samples and research on the petroleum geology, the qualitative evaluation was conducted, it proposed that middle Jurassic source rock was dominative hydrocarbon-generation source rock for relative high organic matter abundance and maturity compared to upper and lower Jurassic source rocks. According to the thickness distribution of dark mudstones, Kosbulak sag, Sudochi sag and Barsakelmes sag were preferable hydrocarbon-generation sags.
An Implementation of Simulation-Based Environment for Bus Fault Injection Techniques
Authors: Shi Biao Biao , Gao Xiao Peng
Published: September 2013

Reliability is the most important feature in this more and more complex computer system era. Fault injection is dependability validation technique to evaluating the system. Hardware and Software implementations of fault injection have a long history and are much more mature than simulated fault injection. In this paper, we compare the differences between these three types of fault injections at first. Then, we identify and understand the types of fault. We design a low-cost, simulation-based fault injection system and design experiments to verify the correctness.
Status and Development Trends of Pu'Er Tea Industrial Mechanization and Automation
Authors: Yang Lin Lin , Tang Xiu Ying , Shi Jie , Ning Wang Yun , Wang Qiong
Published: September 2013

The general trend of tea technology development is tea industrial whole process automation. Pu'er tea with unique processing technology, its equipment with other tea varieties are very different. This paper summarizes the Pu'er tea industry mechanization and automation status, analysis of the tea industry automation process problems, proposed solutions and pointed out the development trend of tea industry automation.
Study on Recognition of Black Insects on Dark Background by Computer Vision
Authors: Liu Sa , Yang Yan , Zhu Xiao Dong , Wang Huai Wei , Lian Shi Bin
Published: September 2013

Improved color channel comparison method (ICCCM) is an effective method to transformcolor images into gray-scale ones. Based on the ICCCM, black or white insects could be effectively extracted and recognized from the real color images with bright background. Howeverit is difficult to use the ICCCM to extract and recognize the black insects from the realcolorimage with dark background. In this paper, the ICCCM is modified to transformthe color images into the gray ones, extracting and recognizing the black insectson the dark background. The ICCCM is modified as follows: (1) A threshold of the gray image is an average brightness value ofred (R), green (G) and blue (B) in all the image pixels.(2) The bright pixels and the color pixels have the highest brightness value 255 in the gray image.(3) A pixel brightness value of the dark area in the gray image equals to a minimum of R, G and B in the pixel. (4) After deleted all the pixels with a brightness value of 255, a threshold of the binary image is determined by Otsus theory. The modified ICCCM more effectively extracts and recognizes the black insects from the realcolorimages with dark background compared with the ICCCM.
Finite Element Analysis of Nozzle Dimension Influence on Fluidic Gyroscope Performance
Authors: Chen Jing Bo , Piao Lin Hua , Tang Jin
Published: September 2013

In this paper, research the influence on nozzle dimension in the sensitive element of fluidic gyroscope. Airflow of two different nozzle dimensions is analyzed contrastively in the sensitive element of fluidic gyroscope. Using ANSYS-FLOTRAN CFD software, the finite element simulation is conducted by a series of procedures, such as two-dimensional model building of fluidic gyroscope, meshing, loads applying and equation solving. The two dimensional airflow distributions of different nozzle diameters in sensitive element of fluidic gyroscope are calculated. The results show that, compared with large diameter and small diameter nozzle of fluidic gyroscope, airflow velocity in the outlet increases by 10.1%, and 31.3% of velocity in the nozzle in large diameter nozzle. It promotes airflow circulation and reduces airflow accumulation in the sensitive cavity without any vortex increase in large nozzle, it increases thermal wires temperature changes and improves the resolution and sensitivity of fluidic gyroscope.
Based on Interval-Valued Intuitionistic Fuzzy Information of Joint Operations Commander and Staff Ability Assessment
Authors: Wang You Cheng , Ao Zhi Gang , Gong Yun Xiang , Jiang Yu Ying , Zhao Tong Xing
Published: September 2013

For assessing the joint operations command and staff objectively, the paper established a joint command personnel ability evaluation of multilayer index system. In view of the majority of interval-valued intuitionistic fuzzy information that is only used for single layer multi attribute index system. In the case of the two grade index attribute weights unknown, we utilized the score vector projection formula and obtained the pros and cons of the commanders in all levels under the one class index attribute. Finally we apply the ladder structure comprehensive assessment method to get the comprehensive ranking. It provide a certain basis for the selection of the joint operational commanders
The R&D Research of Digital Content Platform Analysis Based on Numerical Simulation
Authors: Zhang Fu Jin , Shang Jie , Wang Bin
Published: September 2013

This paper studies the related problems which belong to research of digital content platform by using numerical simulation. Results from the research show that: under effect of network externality, the digital content platform with high-tech stock could only expand successfully when the network size beyond critical capacity. But, when the technological gap is big enough, the critical capacity could be 0. Besides, we found the Nash equilibrium of R&D input is not necessary exist in the simulation without price, and the existence of equilibrium need special condition.
Reservoir Pressure of Coal-Bed Methane Prediction Research Based on Analysis Method by Neural Net-Work
Authors: Jing Xing Peng
Published: September 2013

In Order to Achieve Accurate Quantitative Results of Parameters for Reservoir Pressure of Coal-Bed Methane, Neural Network Prediction Analytic Method is Adopted to Predict the Reservoir Pressure of Coal-Bed Methane. the Main Controlling Factors such as Conformation Stress, Buried Depth, in-Situ Stress and Permeability are Investigated. Mathematical Models of Neural Network of Reservoir Pressure of Coal-Bed Methane of Mathematical Analysis and System Architecture are Established; Taking the Qinshui Basin Coal Seam as Example to Forecast and use Reservoir Pressure of Coal-Bed Methane. Projections Show that: the use of Neural Network Prediction of Reservoir Pressure of Coal-Bed Methane is Feasible; Neural Network Method Makes up a Mathematical Point of Linear and Regularity in Order to Solve the Non-Linear Complex Relationship between the Input and Output Parameter Variables.
Research of Node Energy Consumption Based on Dynamic Power Management in Wireless Greenhouse Control System
Authors: Song Yong Xian , Ma Juan Li , Zhang Xian Jin
Published: September 2013

The resources of wireless sensor nodes are limited, and the power of nodes is supplied with battery whose capacity is very limited, once the energy of battery is run out, the nodes will lose their effect, so there are serious energy constraint in wireless sensor network. In this paper, the specific energy consumption of sensor nodes is studied by experiments, the energy experimental hardware platform is established with the low power consumption SCM MSP430F135 and wireless transceiver chip CC2420, the relationship of energy consumption and communication distance for nodes is discussed, and the energy management strategy of effective wireless greenhouse monitoring system based on dynamic power management is put forward and discussed, the mobile structure is adopted in the convergent nodes. The experiment and simulation results show that the energy consumption of nodes is proportional to the third power of communication distance, the communication distance of sensor nodes can greatly shorten, and energy consumption is saved.
An Evacuation Decision Making Model for Firefighters in Ad Hoc Robot Network
Authors: Li De Min , Zou Jian , Yue Kai Kai , Guan Hong Yun , Wang Jia Cun
Published: September 2013

Evacuation for a firefighter in complex fire scene is challenge problem. In this paper, we discuss a firefighters evacuation decision making model in ad hoc robot network on fire scene. Due to the dynamics on fire scene, we know that the sensed information in ad hoc robot network is also dynamically variance. So in this paper, we adapt dynamic decision method, Markov decision process, to model the firefighters decision making process for evacuation from fire scene. In firefighting decision making process, we know that the critical problems are how to define action space and evaluate the transition law in Markov decision process. In this paper, we discuss those problems according to the triangular sensors situation in ad hoc robot network and describe a decision making model for a firefighters evacuation the in the end.
The Design of Strapdown Inertial AHRS Based on MEMS
Authors: Wang Qing Hui , Li Dan , Chang Lei , Wang Wen Zhou
Published: September 2013

A method of low cost strapdown inertial Attitude and Heading Reference System based on MEMS is implemented in this paper. Based on the analysis of the modules, the proper selection of the core processor and the inertial devices, the hardware components of the system is presented; Using the gradient-descent algorithm which is based on quaternion, it can finish the calculation of the attitude; This AHRS can realize the real-time extraction, calculation and the output of the information.
Study on the Strength Properties of PPTA Paper with Response Surface Methodology
Authors: Tang Ai Min , Zhao Shan , Jia Chao Feng
Published: September 2013

Response Surface Methodology (RSM) was used to study the relationship between the strength properties of poly ( p-phenylene terephthalamide)-PPTA paper and the preparation parameters, such as hot pressing temperature, hot pressing pressure, proportion of PPTA short-cut fiber and beating degree of PPTA-pulp. The results showed that: hot pressing temperature, hot pressing pressure have highly significant influences on the tensile strength and wet strength. The proportion of PPTA short-cut fiber has significant effects on the tensile strength and wet strength. The beating degree of PPTA-pulp also affected the tensile strength significantly. At the same time, the tensile strength was significantly influenced by the interaction between hot pressing temperature and the proportion of PPTA short-cut fiber as well as the interaction between hot pressing temperature and the beating degree of PPTA-pulp. The interaction between hot pressing temperature and hot pressing pressure has significant influences on wet strength, whereas the other factor interactions were not significant. The quadratic formula was established by optimizing the results of multiple regressions. And the model was highly consistent with the experiment. This model could be used to analyze and predict the main strength properties of PPTA paper and also might be used to optimize the production process of PPTA paper and control its quality.
The Design of Intelligent Voltage Monitoring System Terminal
Authors: Chen Lei , Wang Xun , Li Jing Sen
Published: September 2013

This paper begins with introduction the basic structure, functional modules and working principle of the intelligent voltage monitoring system terminal. Then, this article discussed detail the core modules such as data acquisition, storage, time stamps and send. The product uses a modular design concept, and greatly simplifies the difficulty of hardware and software design, reduce the cost of the product, it has a strong competitive strength.
Research on the Simulation Model for Longitudinal Control Channel of FCS Based on PC
Authors: Li Qing , Yang Wei , Huang Zhao Xie
Published: September 2013

According to the analysis of control structures of the two typical control modes-pitch control and height control, the simplified control rules for the two special control systems are presented. Under the condition of enduring the real-time property and fidelity, the classical control theory is applied to study the control parameters selecting of the flight control system (FCS) based on PC modeling traits. The selecting process of control parameters of longitudinal control channel is analyzed and the simulation resources are simplified. The simulation model is achieved. The steps are summarized for the simulation modeling of longitudinal control channel of the flight control system, and the corresponding flow chart based on PC is also given.
The Research of Gas Sealing Performance Inspection Module of Electronic Sphygmomanometer Based on STC12C5A
Authors: Li Xue Zhe , Feng Xiao Hui
Published: September 2013

The gas sealing performance of electronic sphygmomanometer is an important index of its quality control. At present, the gas leak detection of sphygmomanometer is mainly by manual, which has disadvantages of low efficiency and precision, huge impact of human factors and so on. An automatic and high precision gas sealing performance inspection module is proposed in the paper, which solves the problems of pressure calibration and gas leak detection of sphygmomanometer products. The paper also introduces the principle and implementation of system project. The module is designed by STC12C5A single-chip, KPM DC air pump and the pressure sensor of E8CC, which has advantages of high precision, high efficiency, low cost, and flexible operation etc.
The Application Research of Remote Monitoring System Based on GPRS Technology
Authors: Lv Shu Jin , Wu Huan Rui , Liao Zhen Yu , Zhao Ran
Published: September 2013

In the light of the shortcomings of traditional wireless data acquisition structure, the thesis analyzes the advantages of data transmission by GPRS, and then a remote monitoring system based on GPRS technology is proposed. The thesis focuses on overall structure of the system, the circuit design and work process of the remote terminal. It describes the realization method of using Socket multithreading technology to achieve network communication in data center.
A Time Series Analysis and Forecasting Model in Dam Safety Monitoring
Authors: Hou Rui Lian , Gao Hu , Li Hui
Published: September 2013

Based on the new time series analysis and the theory of dam safety, this paper proposed a new forecasting model in dam safety monitoring. First the paper introduced basic method of flat forecast and described its algorithm routine, and explained what is time series. Second the model structure of monitoring system based on time series analysis was given through the analysis of the method. The system can provide the comparison chart of the measured data, forecast data and trends. At last the model was realized based on VB and tested by the actual data. Experimental results show that this forecasting model has better prediction results in dam safety monitoring.
Evaluating the Significance of Acquisition Parameters of Vehicle Remote Monitoring System
Authors: Meng Fan Jiao , Shen Yong , Chen Yuan Yuan
Published: September 2013

Vast amounts of data accumulated by the remote monitoring system for new energy vehicles makes data processing necessary. Among all the data processing steps, evaluating the significance of acquisition parameters is an important one. In this paper, some basic concepts in rough set theory are reviewed, and a method of evaluating the significance of parameters based on rough sets is put forward. This method is applied to the analysis of electric vehicle motor parameters, obtaining good results.
Design and Realization of an Online Power Quality Monitoring System Based on DSP and GPRS
Authors: Li Dong , Zhou Yong
Published: September 2013

In order to evaluate power quality more accurately and synthesize the characteristics of the distribution, which has nodes in large quantity and area, an online power quality monitoring system (PQMS) is developed by using the digital signal processor (DSP) and the general packet radio service (GPRS). This PQMS consists of two parts: the power quality monitor (PQM) which is designed on the structure of DSP and the monitoring software (MS) in upper computer which is designed on the platform of LabVIEW. GPRS network provides the communication channel for these two parts. Therefore, supervisors can monitor and analyze the power quality from a long distance. In this paper, the design and realization of each part are described in detail. Experimental results show that the proposed system is fast in response with high accuracy and has the ability of real-time processing.
Study on Electroless Nickel Plating Process and Property of Aluminum Alloy
Authors: Chang Xia , Zhang Xiao Bin
Published: September 2013

Electroless nickle coating with plain and high binding force was obtained in this experiment .the samples were heat treated and diffused, then microstructure and transformation was investigated by optical microscope and scanning electron microscope. The hardness, binding force, wear and corrosion resistance are tested, the reasonable heat treatment process is gained. Hardness is increased after eletroless nickel plating and heat treatment compared with the matrix. The adhesion of sample heat treated at 400°C is highest, the weight loss and friction coefficient is lowest, the corrosion resistance is best..
A Novel Frame Layer Rate Control Algorithm for H.264
Authors: Li Xi Hui , Zhu Yun Hang , Wang Ying , Shi Yu Ming
Published: September 2013

Considering the shortcomings of H.264 rate control algorithm, the paper proposed a new frame level of rate control algorithm according to the movement activity of each frame. xperimental results showed that compared to JVT-G012 which adopted rate control algorithm,the proposal can control the rate more accurately and obtain the higher PSNR and visual quality.
Direct Torque Control of Interior Permanent Magnet Synchronous Motors Based on Position Sensorless Control
Authors: Meng Zhao Jun , Chen Rui , An Yue Jun
Published: September 2013

The position sensorless control method based on direct torque control was carried out aiming at the interior permanent magnet synchronous motor (IPMSM) in this paper. To the consideration of electric vehicle space is limited, in order to reduce the controller size to save space, this paper studied the sensorless control. Meanwhile, in order to improve the control rapidity as much as possible of the electric vehicle, take direct torque control as a control method of the driving motor. Finally, designed the sensorless direct torque controller and studied its simulation. Simulation results show that the control system have good dynamic and static characteristics in the full speed range.
Signal Processing and Design of Nodes in WSN Agricultural Monitoring System
Authors: Qian Xin , Wang Dong , Zhu Xiang Xian
Published: September 2013

By analysis of WSN node signal processing, we designed a node structural system in WSN agricultural monitoring system and use the ideas of this system to complete the development of wireless sensor nodes. TinyOS, as the node software development system is chosen to test the node performance. The results showed that, the node meets the design requirements, and it can be effectively applied in WSN agricultural monitoring system.
The Research on Substation Monitoring System Based on Multi-Sensor Network
Authors: Li Yong Qian , Li Tian , Sun Xiao Ya
Published: September 2013

According to the needs of the intelligent substation construction, this paper applied the optical fiber sensor technology and wireless sensing technology in the substation monitoring, and designed the substation equipment temperature information acquisition system and communication optical cable monitoring system, which connects to the power supply bureau monitoring center networking and provides the decision-making basis for the substation state control and maintenance. It is conducive to improve the level of substation intellectualization and information sharing.
Blind Signal Detection for Uniform Rectangular Array via Compressive Sensing Trilinear Model
Authors: Zhang Xiao Fei , Yu Hua Xing , Li Jian Feng , Ben De
Published: September 2013

This paper discusses the signal detection problem with rectangular array, and links the detection problem to the compressed sensing trilinear model. Exploiting this link, we derive a compressed sensing trilinear decomposition-based signal detection algorithm, which can obtain the estimation of the signals from different directions. The proposed algorithm requires no spectral peak searching, and it has lower complexity than conventional trilinear decomposition-based method. Simulation results illustrate the performance of the algorithm.
Design of Wireless Sensor Nodes in Intelligent Management System for Scenic Spot
Authors: Lin Yuan Guai , Long Shun Yu
Published: September 2013

For meeting the needs of environmental monitoring for scenic spot in Hainan international tourism construction, the wireless sensor node was designed based on Zigbee. Intelligent management system for scenic spot is a part of tourism information,WSN nodes, as the basic unit of the intelligent management system. The paper briefly presents the architecture of the nodes, include four main modules: the processing module, Zigbee radio communications module, sensing module, power management module. Then each part was described in detail. The nodes can obtain the environmental information in real time, and then transferred to the remote monitoring center. The actual test result demonstrates that the nodes works stead. The nodes performance of lower power consumption is prominent, and it has easy to use and other advantages.