bluuebunny/crossref_metadata_2025 huggingface dataset:
Calculation Method of the Lattice Constants of Crystal at Different Temperature and Pressure
Authors: Li Li , Xing Shi Bo
Published: December 2013

The lattice constants of crystal are the basis of the valence electron structure calculation with the bond length difference method of the empirical electron theory of the solid and molecules. However, the lattice constants change with temperature and pressure. In this paper, according to the nature of thermal expansion of crystal and generalized Hookes law, the relationships among lattice constants, temperature and pressure are established by using linear thermal expansion coefficient and elastic constant. Taken the lattice constants of hexagonal graphite as an example, the calculation results agree with experimental data greatly, which prove the viability of this calculation method.
Study on Stereo Vision for 3D Reconstruction of Welding Seam
Authors: Du Jun , Yong Ling Yu , Sun Mei , Ge Jia Sheng
Published: December 2013

The Monocular stereo vision sensor based on structured light is designed and invented for the detection of the weld seam. By incorporating the structured light, the corresponding points matching problem in the stereo vision has been solved effectively. Firstly, the built monocular stereo vision system is used to obtain the image information of seam surface. Then the image coordinate of the seam feature points in the two-dimensional plane can be identified and extracted, through the responding image processing and feature analysis of the seam image collected. After that, the three-dimensional coordinates are calculated by using the theory of projective geometry according to the positional relation between the CCD camera and structured light projected in the seam surface. By this way, the seam feature information such as the three-dimensional geometry sizes, the groove type, the angle, and the interval can be obtained. Finally, the algorithm performance is tested by the experiment of obtaining the three-dimensional coordinate for seams center points, and the results have proved the detection accuracy and reliability of the visual collection system.
Scaling Laws and Forecasting Techniques of Silicate in ASP Flooding
Authors: Sui Xin , Wu Hai Ming , Wang Bao Hui , Jing Dong , Wu Hong Jun , Li Li , Yuan Dan Dan
Published: December 2013

Served as alkaline-surfactant-polymer flooding for the enhanced oil recovery, alkaline-surfactant-polymer has widely been employed for Chinese oil production. In the practical opinion, the silicate scaling, which was formed by alkali, would harm layer gradually and affect oilfield production seriously. For the reason, in this paper, the phase diagrams of silicate scale were obtained in three different systems, including single silicon system, calcium/ magnesium/ silicon coexistence system, and calcium/ magnesium/ silicon/ aluminum coexistence system. The results showed that, other ions would affect the morphology and process of silicate scaling. In the experimental research range, silicate scaling is more easily to form with the lower temperature or pH value. The mixing scale was formed by absorption of silicate scale on the surface of carbonate scale. The aluminosilicate was formed by aluminum ions and silicon. The silicon scale forecasting model and equation of three different systems in ASP flooding with alkali was set up according to lab date. These data can provide theoretical basis for preventing scaling in oil production
Development and Prospects of Fracturing Equipment in China and Foreign Countries
Authors: Wang Yuan , Gao Quan Jie , Zheng Fei Long
Published: December 2013

Hydraulic fracturing is a stimulation method with broad prospects, and it has been widely used in oil production, shale gas development all over the world. This paper briefly introduced the production process of fracturing, summarized the main fracturing equipments of manufacturing enterprises in Western counties, and compared a part of fracturing pumps. Then this work introduced some fracturing truck products from Chinese domestic fracturing equipment manufacturers. Finally, the author put forward her prospects about the development of fracturing equipment in the future: combination between manufacturing and production, developing high-power but easy-to-move and network controlled products.
Contact Analysis between Packer Slips and Casing Based on Abaqus
Authors: Wang Yuan , Gao Quan Jie , Zheng Fei Long
Published: December 2013

The slips on packer play an important role on supporting packer and locking rubber tube after they have been anchored, and their performance directly affects the oil yield and production safety. In this paper, the contact between a type of packer slips and casing is analyzed using the finite element software Abaqus, the stress and displacement fringe graphs of the casing under working conditions are obtained, and it offers the guidance on optimal design for packer slips.
Resonant Pavement Breaker Vibration System Design and Simulation
Authors: Zhu Song He , Yang Bo , Hou Xian Xiao , Lv Guo Sheng , He Ming
Published: December 2013

This paper is about the vibration system of cement concrete pavement resonant breaker design and simulation. Finished the design and simulation of vibration system model and got the vibration characteristics and its parameters in detail by using virtual prototype technology and finite element method.
Optimal Design of Hydraulic Umbrella Drilling Rig Based on Finite Element Analysis
Authors: Wang Wei Ping , Kang Sheng Cai
Published: December 2013

The YSJZ hydraulic umbrella drill has been widely used in mine construction. Due to its big structure size, the weight brings difficulty in lifting. In order to solve this problem the whole umbrella drill model should be established, and then analysis some structures of the umbrella drill based on the finite element analysis. It can be expected to reduce the weight while improving the stiffness and strength of each part. It turns out that it can achieve the desired effect.
Reliability Allocation and Unit Reliability Growth Tests for Powerplant
Authors: Fan Cheng Fei , Wang Yao Hua
Published: December 2013

The reliability index of powerplant was allocated with the score allocation method. Based on the unit reliability growth test, the DYANE model was used to analyze the reliability growth trend of the ignition system. With the dual ignition system, the reliability of the ignition portion and the safe reliability of the powerplant were improved.
The Structure Design of Pendulum Impact Testing Machine for Automobile Steering Device
Authors: Chen Ji Yan , Wang Zhi Sheng , Cao Guo Hua
Published: December 2013

The paper developed a pendulum impact testing machine. The impact testing machine is mainly used for dynamic mechanical properties testing and anti-destructive testing for the steering assembly. The mechanical system of testing machine adopts the impact type of pendulum acceleration of gravity. It adopts optical-electricity encoder to control the pendulum angle of oscillation. The movement of the pendulum is controlled by gear reducer motor and clutch. The curve of the impact force changing along with the time is half-sine wave during the whole process.
The Problem of the Digital Divide in the Development of E-Government and Countermeasures
Authors: Wang Dong
Published: December 2013

The problem of Digital Divide has become increasingly serious with the advance of information technology. The paper describes the connotation of the Digital Divide briefly, and analyzes the related problems in the development of Chinese E-government from three aspects: regional differences, differences between urban and rural areas, age differences. Learning from the experiences of developed countries and regions, the paper gives the countermeasures from following aspects: strengthening IT research to create conditions for bridging the Digital Divide, caring for vulnerable groups in the educational policy, eliminating information privilege and maintaining information fair, universalizing the services of E-government.
Design of Communication Module of Sea-Floor Observatory Based on MINA
Authors: Li Xiu , Huang Rong Sheng , Guo Zhen Hua
Published: December 2013

Since 20th century, sea has been more and more important for human beings. A lot of sea-floor observatory has been built or planned to be built. In order to meet the requirements of the sea-floor observatory, a communication which must handle thousands of connections at the same time is designed. It is designed based on Apache MINA and then some optimization has been done. After optimization, tests show that it can handle more than 20000 connections simultaneously.
The Optimal Filter Recurrence Calculating Method on a System of Equations Pseudo Solution in the Large Capacity of Computing Technology
Authors: Xiao Xiao Nan
Published: December 2013

In the large capacity of computing technology, this article sets up the statistic recurrence calculating method of linear algebra pseudosolution by making use of the optimal filter theory. So we can get recurrence form of pseudosolution under the linear simultanuity and linear non-simultanuity instead of using the complex calculating pseudo-inverse matrix. This method is reliable and its effect is excellent. The results of the discussion show that the method of this article will provide an effective mathematic processing method in order to realize the optimal calculating of complex system of linear equations in the large capacity of calculating.
A Method for Information Security Risk Aassessment Based on Fuzzy Operator
Authors: Ye Shi Chao , Wu Ke He , Niu Yu Guang
Published: December 2013

To address the security risks of information systems to make accurate quantitative assessment of problems in the OWA operator and based on gray theory DHGF algorithm is proposed based on combining advantages of both information security risk assessment methodology. Information security risk assessment based on an a priori sample value index depth of excavation, the use of the basic methods of OWA operator, objective indicators derived property rights, and the use of gray theory for assessing the value of integration. This approach will be applied to information security risk assessment, to ensure the objectivity of the evaluation results, while reducing dependence on the assessed value of integrity, to solve the traditional information security risk assessment methodology for index data have special requirements, it is difficult strictly objective and quantitative problems. Assessment examples show the effectiveness of the method and objectivity.
Design on Laser Diode Temperature Control Circuit
Authors: Hao Zi Qiang , Li Hong Zuo
Published: December 2013

This thesis designs a new model of thermal control circuit based on the in-depth study on the temperature control of laser, in order to make laser to work under a constant temperature. This circuit uses ADN8831 as the key chip, combines PWM control scheme. It has accomplished the design of input stage, compensative links, output stage, filter circuit, protection and fault detection of hardware circuit. After actual laser experiments, the precision of temperature can be controlled up to 0.01°C. Experiments show that this circuit is of high efficiency, small size, high reliability, and strong driving ability. It will provide constant temperature control for laser device.
Design of a Smart Classroom Broadcasting System Based on WSN
Authors: Gong He , Wen Zhu , Wu Zi Yu , Yu Man Hua
Published: December 2013

This paper presents a smart classroom broadcasting system using WSN technology. Different from other online broadcasting systems, it adopted ZigBee module JN5148 as microcontroller. Text or audio files were sent to the radio terminal in network data packets through the coordinator. It has achieved wireless transmission and intelligent release of personalized voice and ringtone, real-time control of fire alarm and security monitoring . Test results show that ZigBee network operates stably, the broadcasting system embeded ZigBee techology does not need complex wiring installation .The whole system is easy to maintain. It also meets the the application requirements for current broadcast technology .
Differential Fault Attack and Meet-in-the-Middle Attack on Block Cipher LED
Authors: Liu Feng , Liu Xuan , Meng Shuai
Published: December 2013

In this paper, on the basis of the nibble-based faulty model and the differential analysis principle, we propose a kind of attack on the new low-cost LED block cipher which combine differential fault attack with meet-in-the-middle attack. We inject the nibble faulty at round 29, which is earlier than other papers. More precisely, ciphertext need to be multiplied by a matrix before add the key in order to reduce the effect from key spreading. Finally, the key candidates are recovered by solving the equation set. Hence the secret key bits can be recovered faster than exhaustive search.
Research on Progress and Possibility of Electrospining of Native Cellulose and Preparation of Copper-Based Antimicrobial Fiber
Authors: Cao Yan Juan , Xin Bin Jie , Wu Xiang Ji , Du Wei Ping
Published: December 2013

Electrostatic spinning is now recognized as a versatile and easily feasible method for the preparation of micro and nanofibrous materials. Because of their high specific surface area and highly porous structure electrospun materials can find application as wound dressings that provide good draining and good air permeability [. By adding various types of material or chemical modification in electrospun materials, we can prepare a polymer with excellent antibacterial properties of nanomaterials. Copper, an inorganic antibacterial agent, is also called the second silver. The antibacterial research of copper series attracted great concern in recent years. First, the paper introduced the progress and mechanism of electrostatic spinning of native cellulose and Cu (II) ion antimicrobial fibres, and then did a brief presentation of copper ion antibacterial fibers on the bases of electrostatic spinning of native cellulose.
Embedded System Applications in the Internet of Things
Authors: Du Li
Published: December 2013

This paper analyzes the development process of the Internet of things and its four key technology, and embedded that system was put forward in the application of Internet of things; The development of the Internet of things is the inevitable outcome of the times development, are bound to change the traditional experience and cognition of the existing, make our perception of the world into the future.
Adaptive Sliding Mode Observer for Back-EMF in Direct Torque Control of Brushless DC Motor
Authors: Wang Song Lin , Xie Shun Yi
Published: December 2013

The key issue of feedback torque calculation in BLDCM-DTC system is how to get the accurate estimation of back-emf. The influences form the deviation of resistance and inductance on traditional back-emf sliding mode observer (SMO) and relevant torque observation results are analyzed. To advance the accuracy of the torque estimation, an adaptive sliding mode observer is designed to estimate the back-emf of the BLDCM and then get torque estimation from the back-emf estimation. The proposed sliding mode observer can also implement the online identification of the stator resistance and inductance simultaneously. Simulation results demonstrate the proposed method is valid and effective.
Zig Bee-Based Wireless Sensor Network Design of Irrigation Systems
Authors: Wang Fu Ping , Ding Si Fa
Published: December 2013

For irrigated areas still follow the traditional irrigation, causing serious water wastage. In this paper, chip CC2530 Zig Bee wireless network as the core, development and design coordinator nodes, routing nodes and devices terminal node, complete the irrigated areas of intelligent water-saving irrigation control system for wireless sensor networks networking structures. Equipment terminal node is responsible for collecting soil moisture data, the data is sent directly through the route or to the coordinator node, the coordinator node for data aggregation and passed to the intelligent controller, through the intelligent controller to make an accurate judgment, the implementation of efficient water-saving intelligent irrigation.
Information Mining Based on Multi-Granularity News Fusion
Authors: Yu Wei , Tang Xiao Yue , Gan Lin , Li Shi Jun , Zhang Yun Lu , Wang Jun
Published: December 2013

In response to the Internet users are about the same theme of mass information effectively filter and extraction, this paper proposes a document based on particle size of the news MGNF fusion algorithm, particle size document means that face now the newest microblog and short documents and traditional news dissemination documents, both document length although different, but as based on the calculation of grassroots journalism and communication mode. Through mining the different particle size of the document different views, we can find out the potential to be found for the information. The experimental results verify the effectiveness of the proposed algorithm.
Application of Network Technology in Campus Public Address System
Authors: Liu Yu Ming , Ma Hui Min
Published: December 2013

Based on the traditional campus public address system is introduced in the network technology, this paper discusses the network public address system composition and function of main equipment, the implementation partition on demand, partition paging remote monitoring and remote diagnosis and remote software upgrade
Dynamic Analysis of a 1T3R Parallel Stable Platform
Authors: Fang Li Feng , Liu An Xing , Zhang Xiao Nan , Zhang Xing Long
Published: December 2013

Based on POC set theory and SOC unit, a 1T3R parallel stable platform is proposed. The Single cylinder force analysis is studied. Then uses Newton-Euler method, gives full consideration to these various factors: without neglecting the ball screw rotation, friction between the spherical joint, the mass and the moment of inertia of electric cylinders, based above the dynamic theoretical Analysis of the stable platform is researched. The paper makes the guide sense for the follow-up research and the application of the 1T3R mechanism.
Design of Tiltrotor Flight Control System in Conversion Mode Using Improved Neutral Network PID
Authors: Peng Cheng , Wang Xin Min , Chen Xiao
Published: December 2013

Considering the high-order, time-varying and nonlinear characteristics of the tiltrotor aircraft in conversion mode, the control requirements and the specific conversion scheme are presented first. An improved back propagation (BP) neural network PID control algorithm is then proposed, utilizing the strong nonlinear mapping characteristics of neural network. In the proposed algorithm, an inertia term is added to the gradient-descent-based weight adjustment formula of the conventional BP neutral network in order to increase the convergence rate and obtain satisfactory control effects. Finally simulation results indicate the effectiveness of the proposed algorihm.
Research on Automatic Remote Monitoring System for the Ventilation System in Jinshandian Mine
Authors: Qin Shao Bing , Zhang Sa Sa , Ren Gao Feng , Zhang Cong Rui , Zhang Jian Feng
Published: December 2013

Taking the ventilation system of Jinshandian Iron Mine as the background of this research, the author proposed and designed an automatic remote monitoring system of mine ventilation based on PLC and LabView in the essay. As various sensors and PLC are set in the mine, the system is able to achieve real-time monitoring and display towards the working state and working environment parameters for the fans and motors in the mine. With intelligent analytical technologies, the system will optimally regulate the start-up and shut-down or running frequency of all fans according to the change of personnel, equipment and working environment parameters, and play a role in dynamic display, early warning and remote control for the mine ventilation system. Practice has proved that the application of the system in the production of Jinshandian Iron Mine has successfully protected the staff and equipment, realized the remote central monitoring and controlling for the production, improved the automatic management for mining enterprises, and reduced the cost for ventilation.
Programming Introduction of Macro-Program Parabola Manufacturing about Numerical Control Lathe
Authors: Tu Jin Wei , Huang Cheng Zhong
Published: December 2013

Technology macro-program application in numerical control is the secondary development tool which numerical control system manufacturers supported to the customers. It is the highest manual approach of numerically controlled lathe programming. This article introduces the programming process of macro-program parabola machining. Through practicing and researching the key functionality of the macro-program parabola machining, we can effective and reasonable master this ability and greatly increase the working ability of numerical control lathe.
Installation, Disassembly, and Debugging Analysis of Vertical Turret Controller Based on Numerically-Controlled Lathe
Authors: Huang Cheng Zhong
Published: December 2013

After China joins into WTO, the world factory position has been established. Our numerical control machine obtains great development. The vertical turret controller is the most important part of numerically-controlled lathe. This article introduces the installation, disassembly, and debugging of the vertical turret controller. Moreover, it is based on the common fault during the installation and debugging. The emphasis analysis is the fault of the vertical turret controller of numerically-controlled lathe and provides the relative maintenance plan.
University Graduates' Files Online Inquiry System Design
Authors: Liu Lin
Published: December 2013

With the increasing number of college graduates, the great increasing number of graduates ' archives, the continuous improvement of graduates' free choice of occupation, the traditional archives management methods of university graduates has already been far from meeting the needs of the developing conditions, Also have affected the work efficiency of archives management of university graduates. Designed " University graduates ' files online inquiry system design ", students ' information and employment records will be mailed of the EMS network docking to realize the real-time tracking of archives , and strengthen the graduates and school archives management communication, then raise the scientific, information, and networking level of the school students ' archive management. Introduction
The Design and Implementation of Web-Based Autonomous English Learning Platform
Authors: Ren Yong Dong
Published: December 2013

In view of the students weak English foundation, the nonideal teaching effect from teachers classroom,students lack self-discipline, such as present situation, has designed a web-based autonomous English learning platform. Which mainly reflects the characteristics of autonomous learning, learners can master free learning time and learning content according to the course schedule,and improve the students' enthusiasm of learning English.
Design and Implementation of Stone Materials Information System
Authors: Rao Hao
Published: December 2013

Stone Materials Information System use ActionScript to connect SQLite database. Information of stone materials, transaction, customer, employee can be stored by system. Several database tables are created in the system. Functions are used to complete data modification operations. Stone Materials Information System provides convenience for stone material transactions between the manufacturer and the customer.
Research on Model-Based User Interface Automatic Generation in SaaS Environment
Authors: Wu Hao , Hua Qing Yi
Published: December 2013

A model-based user interface automatic generation development method was presented to adapt for user interface development requirement under SaaS environment. This method deployed abstract interface model, transformation model, specific interface model and final interface in different abstract level at running time. So, the server-end could distribute the user interface to the client-end by one time a widow or page. By a case study, this method can satisfy the demands of user interface under SaaS environment, and it is so simple to study and use.
Optical Network Energy Algorithm Based on the Genetic Algorithm
Authors: Liu Xiang Lou , Wang Dong Xue , Zhao Dong Yan , Mu Hai Wei , Zhang Ming
Published: December 2013

The genetic algorithm is from the law of the biological genetic evolution. The algorithm is simple, highly feasible. This paper uses a genetic algorithm for optical network energy issues. Select the business volume to be the operator and to save energy through node sleeping. The simulation confirms the algorithm can be implemented. This paper provides another possibility on optical networks energy conservation.
Improved FAST Corner Detection Based on Harris Algorithm for Chinese Characters
Authors: Yao Na , Bai Tie Cheng , Chen Jie
Published: December 2013

According to the characteristics of Chinese characters image, we propose an improved corner detection method based on FAST algorithm and Harris algorithm to improve detection rate and shorten the running time for next feature extraction in this paper. The image of Chinese characters is detected for corners using FAST algorithm Firstly. Second, computing corner response function (CRF) of Harris algorithm, false corners are removed. The corners founded lastly are the endpoints of line segments, providing the length of line segments for shape feature extraction. The proposed method is compared with several corner detection methods over a number of images. Experimental results show that the proposed method shows better performance in terms of detection rate and running time.
Core-Shell WO3/TiO2 Nanorod Heterostructures for Solar Light Photocatalysis
Authors: Guo Peng , Meng Ling Tao , Wang Chang Hua
Published: December 2013

Heterojunction photocatalyst containing one dimensional nanostructures exhibits interesting size, shape and material-dependent photocatalytic properties compared to single-component counterpart. In this work, we develop a simple two-step strategy to WO3/TiO2 heterojunction based on WO3 nanorods and TiO2 nanoparticles. The as-obtained heterojunction features core-shell morphology and has the advantage of extended solar light response, enhanced chemical stability and easy recyclability. As such, it exhibits high photocatalytic activity toward organic pollutants degradation including rodamine B dye and gaseous acetaldehyde.
Slicing Reduction for Algebraic Verification of SEREs Properties
Authors: Hu Li Zhong , Zhou Ning , He An Ping , Gao Xin Yan
Published: December 2013

Slicing reduction of a system is a technique, which advantage is that the detection can be performed on the part of the global state space which is of interest. In this paper, we present an algorithm which applies the slicing reduction technique to an algebraic verification method for SEREs properties. Due to slicing reduction, the algebraic verification algorithm only requires a part of state variables relevant to the SEREs properties, which can significantly improve the efficiency of the verification algorithm.
The Calculation of Fourth-Rank Constitutive Parameters of Consistent Tangent Modulus and Plastic Modulus in Finite Element Analysis
Authors: Chen Xiao Hui , Ma Lian Jie
Published: December 2013

Newton-Raphson method is used in global equilibrium for the numerical solution of elasto-plastic problems. It is necessary to determine the fourth-rank constitutive parameters of consistent tangent modulus in each integration point. Euler backward method and implicit stress integration is applied while constitutive model is implemented into ANSYS software. Take Chen, Jiao, and Kim model (2005) as an example, comparison of fourth-rank constitutive parameters and without fourth-rank constitutive parameters of consistent tangent modulus indicates that the convergence is obviously influenced by fourth-rank constitutive parameters of consistent tangent modulus for the larger load case, whereas the influence of plastic modulus is almost neglected.
Location and Distance Measurement of Door Handle in HSI Color Space
Authors: Wu Ruo Hong , Wu Huai Yu , Zhong Rui
Published: December 2013

Current approaches for opening door usually focus on the recognition of door handle in a fixed position, but in the process of door opening, a manipulator with a mobile platform is very important under real-world scenarios, which brings significance to the location and distance measurement of a door handle when the mobile platform is moving. In this paper, a method for location of a door handle in HSI color space is presented. The image of the door handle is captured by the kinect for Xbox360, and is processed in HSI color space, resulting in a rectangle frame fitted to the door handle to be displayed in real time. The distance value of the door handle is obtained from the depth image. Experiment results show the efficiency of the proposed method.
Pseudo-Exhaustive Testing
Authors: Fu Xin , Fu Shu Ai
Published: December 2013

There are many test generation algorithms currently. With continuously increasing of circuit scale, complexities of these algorithms are also increasingly sharply. Simple algorithms based on circuit structure, including exhaustive testing and pesudo-exhaustive testing, and simplicity of generation of test vector are more and more highlighted by scientific researchers and scholars. The dissertation mainly analyzes pseudo-exhaustive testing.
Agglomeration Feature Extraction from Voiceprint of Fluidized Bed by PCA and MFCC
Authors: Chen Lei , Lin Wei Guo , Zhao Zhong , Hou Hao Tong
Published: December 2013

Agglomeration reduces the productivity and the quality of polyethylene fluidized bed. The mathematical model cant characterize the nonlinearity of two-phase flow in the fluidized bed exactly, which make state monitoring and failure diagnosis to inner state of fluidized bed lacking assessment criterion. Acoustic emission sensor could monitor the signals from polyethylene granules impacting on the wall of fluidized beds. Use wavelet packet analysis to process the acoustic emission signals and extract voiceprint feature by MFCC. The feature vector is combined with the MFCC of all sensors. Reduce the dimensionality of vector by PCA and test the feature vector by BP neural network.
Optimization on Tracking Performance of RLS Algorithm Using Transfer Function of Butterworth Low Pass Filter
Authors: Tan Si Wei , Ren Zhi Liang
Published: December 2013

In order to get further optimizations on tracking performance of the RLS algorithm in nonstationarity signal processing, and to simplify the variable forgetting factor updating model, a novel variable forgetting factor updating model based on Butterworth low pass filter transfer function was proposed. The relationship between the variable forgetting factor and the tracking performance of RLS algorithm was analyzed. The updating model proposed in this paper was built based on the modification of the transfer function of Butterworth low pass filter. The model function fit the theoretical variation curve of the variable forgetting factor well. It also could be adjusted by parameters of the function order and the critical point according to the different applications. In addition, the computation of the updating model was simple and convenience. The RLS algorithm with the updating model was tested in an adaptive interference cancellation system. Some conclusions were drawn from the simulation results. The optimized RLS algorithm had a better tracking performance in nonstationarity signal processing as well as small stationary errors after convergence.
An Algorithm of Turbulence Wavenumber Spectrum Matching Based on SVM
Authors: Wang Yong Fang , Luan Xin , Song Da Lei , Chen Li Ping
Published: December 2013

Considering the problem of invalid data caused mismatch of wavenumber spectrum which contained in turbulence observation data, an algorithm of turbulent wavenumber spectrum matching based on SVM is proposed. Category labels are obtained from pre-processed raw data by cross validation algorithm, and then the optimum parameters of the classifier are got through SVM learning algorithm. Sea trial data validation results indicate that the algorithm has high matching accuracy, and provides a new way to calculate the turbulence wavenumber spectrum matching.
Free Handwritten Numeral Recognition Based on BP Neural Network
Authors: Chen Miao Chao , Wang Fang
Published: December 2013

Handwritten numeral recognition is an important branch in the field of pattern recognition, has broad application prospects. This article presents a method of using BP Neural Network to implement programme for recognition of free handwritten numerals. Scanned handwritten numeral image after preprocessing and feature extraction, classificated and recognized by the BP Neural Network. Through Matlab simulation experiments it shows that the recognition method is effective and has high recognition rate.
An Improved Motion Compensation Algorithm Based on Discriminant Analysis
Authors: Song Da Lei , Su Zhao Long , Wang Yong Fang , Chen Li Ping
Published: December 2013

Considering the problem that vibration signals which are generated by three-axis accelerations will impact turbulence signal, an improved motion compensation algorithm based on discriminant analysis is proposed. The characteristics of three axis acceleration signals are got by using cross validation discriminant analysis method to test the performance of de-noising among different filtering orders which are got by three-axis accelerations vibration signals. Finally the discriminant function is found to get the optimal filter order. The results of simulation and real sea experiment data statistical analysis shows that the algorithm improves the de-noising performance and can be better applied to ocean turbulence signal de-noising processing.
Fabrication of Colloidal Crystals on Different Patterned Silicon Substrates by Self-Assembly Method
Authors: Wan Yong , Cai Zhong Yu , Jia Ming Hui , Li Chao , Yang Wan Qin
Published: December 2013

Silica and polystyrene (PS) microspheres assembled on two quite different patterned silicon substrates, cross-like pillar pattern and eye-like pattern, respectively. The results indicated that the surface pattern imposes a predetermined lattice orientation in colloidal crystals (CCs). Other influent factors, such as microsphere size, the altitude of pattern and the concentration of colloidal suspension, may also play an important role on the self-assembly process.
Sensitivity Analysis to Attribute Values Based on Grey Correlation in Multiple Attribute Decision Making
Authors: Huang Zheng Dong , Feng Hong Xiang
Published: December 2013

With respect to the multiple attribute decision making problems based on grey correlation, sensitivity analysis is proceeded to attribute values, and analysis model as well as search algorithm are given to compute the attribute variation interval which maintain the original rank. Finally, a numerical example was presented.
Computing and Simulations of the Acoustic Scattering Field of Underwater Targets Based on the CM Method
Authors: Xiong Hong Jin , Yuan Bing Cheng , Zhan Hao Ke , Luo Yin Bo
Published: December 2013

According to the theory of the acoustic scattering field of underwater targets, the theoretical derivation of C-Matrix method is given, and the mathematical model for solving acoustic scattering field is established. By means of MATLAB, the accurate expression method for the figure of acoustic scattering field is studied, and the characteristic and difference of the simulation curve in various frequency and azimuth are analyzed. It is shown by the application that, to a certain extent, the conclusion has practical value and guide meaning for the detection and identification of the hiden objects.
Compressed Sensing Based-On Digital Multi-Channel Sampling for Signal Spectrum Detection
Authors: Zhan Hua Qun , Zeng Juan Ying , Xu Bin , Wang An Min
Published: December 2013

Conventional compressed sensing is accomplished via random modulation in analog domain. In this paper, a compressed sensing method based-on digital multi-channel sampling is proposed, which is used for signal spectrum detection and evaluation. This compressed sensing method is fulfilled by random modulation in digital domain and aliasing signal spectrum to full frequency range, sampling in Nyquist frequency below followed and digital multi-channels associated signal reconstruction. Examples of experiments show this method is useful and some merits are achieved, such as reduction of hardware complexity, saved memory largely and achieved real-time data transmission.
Prediction of TC16 Alloy Deformation Behavior Based on BP Neural Network
Authors: Song Chuan Dong , Kong Jian , Che Lin
Published: December 2013

Based on the theory and algorithm of BP neural network, the deformation behavior of TC16 titanium alloys is studied under different quenching temperature. Mechanical properties of TC16 were measured by tensile experiments and use the BP neural network model to train and simulate the experimental data. Results show that using the BP neural network method can get high calculation accuracy and the prediction errors are around 5%.This method is suitable for further research of TC16 alloy.
Spectral Residual Based Underwater Animal Detection
Authors: Chen Zhe , Gao Jian Qiang , Shen Jie , Wang Hui Bin
Published: December 2013

In this paper, the spectral residual method is applied in the underwater image data for detecting the animals. The system is designed to assist the underwater monitor system survey operations, specialized to the task of animal detection. Firstly, the regularity for the frequency spectrum of the images collected in the underwater world is discovered by the statistical analysis. Then we transform the input image into the spatial frequency domain and singularities including in the frequency curve is extracted by average filtering. Finally, these singularities are inverse transformed from the frequency domain into spatial domain and the saliency area is detected. Experimental results, which have been performed on a set of real underwater images acquired in different environments, demonstrate the robustness and the accuracy of the proposed system in the task of underwater animal detection.
Study of Catalytic Cracking of Asphaltene in Near-Critical Water
Authors: Yang Jian Ping
Published: December 2013

The method of solvent division is adopted to separate asphaltene from Shengli heavy oil by n-heptane. 1HNMR and 13CNMR spectrum of asphaltene were determined with a Bruker Avance 400 NMR spectrometer. Combining with the elemental analysis results, the aromatic-ring structure is main structural composition in the asphaltene. Asphaltene was catalyzed and cracked with naphthenate nickel as catalytic cracking catalyst in near-critical water. The suitable reactional condition was obtained by orthogonal experiment method, reaction temperature 300°C, the mass fraction of catalyst used 0.6%, reaction time 24h. By testing element content of cracked asphaltene, carbon element content had reduced 0.06%~0.80%; hydrogen element content had reduced by 0.74%~3.41%; oxygen element content had reduced by 3.12%~27.1%; nitrogen element content had reduced by 0.40%~13.47%; sulfur element content had reduced by 9.85%~31.26%.
Analysis on Factors Affecting Biodiesel Production Rate Based on Probability Theory
Authors: Wei Yi , Zhang Jing , Zhang Mu , Zhang Yin Dong
Published: December 2013

Biodiesel orthogonal experiments require large amount of experimental data collected and in order to save experimental time, referring to the correlation coefficients analysis in probability theory, the factors which affect the yield of biodiesel are analyzed. Under the same reaction temperature, the range order is as follows: the molar ration of alcohol to oil, the dosage of catalyst and reaction of time. At the same time, it provides theoretical guidance for obtaining optimum reaction conditions .
Reliability Evaluation of Fast-Charging EV Station Entry to Generation and Transmission Electrical System
Authors: Du Hang , Guo Chun Lin
Published: December 2013

This paper predicts the future of rapid charging technology for EV, including its corresponding vehicle types and charging time. We choose the Monte Carlo simulation method to choose the initial charging time, initial SOC for each EV randomly, so as to get the fast charging EV load. After all these, we could have a comprehensive reliability evaluation of the generation and transmission power system includes fast charging EV load. In the end, through a matlab test example, a reliability evaluation on the impact of fast charging EV load on power generation and transmission system is made.
Discussion of the Relationships among the Main Participants Based on the Electric Vehicle Commercial Mode
Authors: Ni Feng , Chen Lei , Zhang Hao , Liu Shuo
Published: December 2013

The commercial mode of electric vehicles (EV) is helpful for the development of electric vehicle industry, which is also an effective way of forming the electric vehicle consuming market quickly. To research and explore the relationship of main participant bodies in the electric vehicle commercial market is an important research topic. Therefore, this paper, based on the proposed hierarchical structure of the electric vehicle commercial mode, analyzes the roles and functions of the chief market participant bodies from three levels. Finally, the paper discusses some future research directions.
Settlement of Cellulose Insulation
Authors: Labudek Jiri , Teslík Jiří , Vodičková Martina , Waldstein Petr
Published: December 2013

Construction has recently become greener and returns to the materials that used by our ancestors. Recycled paper is considered as ecological material. Cellulose insulation is made from it has been used for several years. People do not believe in this blown insulation mainly due to the settlement and the creation of thermal bridges in the least desirable areas of the structure. This paper presents a description of a new test filling insulators which should clearly define the issues settlement.
Experimental Study on Permeability Resistant and Pore Structure of High Content Mineral Admixtures of HPC
Authors: Yang Hai Cheng
Published: December 2013

The influence of water absorption and chloride permeability for high content mineral admixtures HPC with W/B ratio and curing age have been tested, pore structure of concrete have been tested by mercury intrusion method (MIP) and the relationship with permeability resistance also have been analyzed. The research show that chloride ion penetration resistance and water absorption decreased significantly with the extension of curing age and low W/B ratio. Marine engineering high-performance concrete with double adding fly ash and blast furnace slag has excellent resistance to chloride ion permeability. The pore structure of concrete can optimize by double adding and the pore distribution are more reasonable.
Heat Insulation Research on Double-Skin of Architecture in Hot Summer Area
Authors: Huang Yan Yan , Chen Hong , Deng Shi Chao
Published: December 2013

This article takes the example of the architectural skin of Wuhan Construction Plaza with the curtain wall reconstructed. By actual thermal performance measurement of architectural skin of the building, datas such as surface temperature of inner and outer skin component, temperature and wind speed between air spaces are obtained for collating and analyzing, the effect of double-skin on thermal performance of building envelope in actual engineering application is studied, and heat insulation of the applied double-skin in the passive energy-efficient design is therefore verified. This article is to provide a reference to the double-skin energy-efficient design in the hot summer area as well as to provide ideas for research and application of passive building energy saving.
Analysis of Eco-Design Strategy of Public Buildings in Large Space
Authors: Liu Wei , Huang Jin Hui , Gu Xian Guang , Ji Xiang
Published: December 2013

Throughout todays society, with the further development of economic globalization, public buildings in large space present the tendance of multi-direction and diversification, among all the public buildings in large space, the principles of eco-designing strategy are quite special. On the basic of principles of eco-designing, the author analyses the strategy of eco-designing through some examples. The author presents his opinion mainly from four aspects: smart usage of underground spaces, perfect integration with environment, active adoption of eco-construction, initiative expansion of the green energy, finally, the author tries to come up with the design pattern to summarize the main eco-design strategies of public buildings in large space.
Design and Implementation of a Photovoltaic Power System with Bi-Directional Inverter
Authors: Wu Yu En , Wu Chih Chung
Published: December 2013

A PV power system with bi-directional inverter is proposed in this paper. The system is divided into two stages, one is power stage, which contains DC/DC converter and bi-directional inverter, the other is control stage. Both stages control schemes are by a micro-controller dsPIC30F4011. For preventing from high current harmonic caused by the two stages, a predictive current control and modulation principle are designed and operated in high frequency to reduce the current harmonic. The bi-directional inverter can operate in grid-connection (GC) mode or power factor correction (PFC) mode. But the core material of inductance will result in violent current ripple change when the inductor current promoted. So, a gain modulation is used to compensate various inductances used to reduce grid-connection current ripple. Finally, the system is implemented to verify the feasibility and performance of the proposed system.
Experimental Investigation on the Shrinkage and Creep Performance of Self-Compacting Lightweight Concrete
Authors: Zhang Yun Guo , Wu Zhi Min , Wu Xi
Published: December 2013

Several experimental investigations were conducted on the autogenous shrinkage and creep performances of two types of designed self-compacting lightweight concrete (SCLC). In order to explore the difference in long-term performance between SCLC and normal aggregate concrete, normal aggregate self-compacting concrete (SCC) and normal concrete (NC) are also designed in this study. The results indicate that the designed SCLC exhibits lower autogenous shrinkage at early age, even slight expansion during the first 10 days. After 6 months, the autogenous shrinkage of SCLC increases nearly equal to those of normal aggregate concrete. Compared with the reference concretes NC and SCC, the 360-day creep coefficient of SCLC is lower, but the specific creep is higher. It is also found that long-term creep coefficient and specific creep decrease with the increase of compressive strength of SCLC.
Numerical Study on Effect of Injection Rates on Combustion and Emission Performance
Authors: Zhang Zhou Rong , Wang Qian , He Zhi Xia , Dai Li Ming
Published: December 2013

As a study of natural gas engine, three-dimensional numerical simulations of diesel injection rates were conducted by using AVL FIRE code. And particularly the effects of the injection rates in the pilot diesel jets on the engine combustion and emission were analyzed. It is found that injection rate in the pilot diesel jets plays an important role on the emission, and slow ending rate of the injection keeps lower NO and Soot.