bluuebunny/crossref_metadata_2025 huggingface dataset:
Anti-Ship Missile Attack-Defense Confrontation Ability Verification Technology Based on Simulation
Authors: Zhang Jian Qiang , Wang Hou Xiang , Yang Hong Mei
Published: October 2014

A detailed study on modeling and simulation of anti-ship missile terminal guidance radar whole work process, such as target echo, environmental clutter, electronic jamming ,signal processing and data processing etc, is made in this paper.On this basis, an anti-ship missile attack-defense confrontation simulation system is developed to realize the verification of anti-ship missile attack-defense confrontation ability. The application of this simulation system proves that the efficiency of the military training is improved and the cost of training is cut down.
A Fast Algorithm of Linear Canonical Transformation for Radar Signal Processing System
Authors: Yu Yan Xin , Wang Chun Yang , Chen Yu , Sun Hong Yan
Published: October 2014

Linear canonical transformation is a new signal processing tools developing in recent years. As a unified multi-parameter linear integral transform, linear canonical transformation has its unique advantages when dealing with non-stationary signal. However, from the existing literatures, the basic theoretical system is not perfect, some of the theories associated with signal processing needs to be further established or strengthened, the research of linear canonical transformation has important theoretical significance and practical significance, but linear canonical transformation needs a lot of calculation, it is not like Fourier transform, fractional Fourier transform, Fresnel transform and scale operator, they have already been widely used in various fields of expertise, in order to reduce the amount of calculation, this paper puts forward a fast algorithm which uses duality theorem of linear canonical transformation to reduce the amount of calculation, it can quickly complete the operation when we use linear canonical transformation to process the signal during radar signal processing, the time for normal algorithm is 5s, the fast algorithm needs only 0.2s.
A New Infrared Thermal Design Based on GWIR Uncooled Detector
Authors: Xie Qing Sheng , Yi Bo , Liu Wei , Duan Cheng Peng , Chen Yao Hong
Published: October 2014

The infrared detector is the kernel of an infrared thermal imager. Usually it is the most expensive device. This paper describes a new infrared thermal design, based on an uncooled infrared detector with high performance and low price. It describes the specifications of the infrared detector and illustrates detailed the circuit to driver the infrared detector, include pivotal functions like TEC control and bias-voltages generation. The software to obtain image, correct non-uniformity and enhancement image is discussed also. At last, some infrared images prove the correctness of this design.
Dynamic Generation of Emergency Plans Based on the Knowledge Structure in Category Theory
Authors: Huang Wei Dong , Chen Ling Yun , Yan Li
Published: October 2014

In this paper, we studied division, expression and reorganization of the knowledge segments of emergency plans, and make emergency plans structured through category theory. As for the process intersections and process differences of some similar emergency plans and cases, we designed extrapolation algorithm to get the given the total minimal set of these processes. Then, according to the existing process segments retrieved for users need, we can get the emergency response process adapt to the incident scene through the merger of these segments, and realize the dynamic generation of digital plans through merging and restructuring of knowledge segments.
Synthesis and Performances of Water-Soluble Phenolic Resin
Authors: Wu Ji Yuan , Qian Xiao Lin , Yu Pei Zhi
Published: October 2014

Water-soluble phenolic resin was synthesized via two-step alkaline catalytic reaction. The influences of synthesis process conditions on hydroxymethyl content of water-soluble phenolic resin molecular chain were also studied. The results show that the increase of formaldehyde dosage, as well as the increase of reaction temperature and reaction time, the content of hydromethyl in resin increased first, and then decreased. Without the addition of stabilizer, polymer weak gel for flooding was synthesized with HPAM crosslinked water-soluble phenolic resin. The performance analysis of the weak gel shows that the change of viscosity of weak gel corresponds to the change of the content of hydromethyl in resin. Phenolic resin with good water-solubility and strong reaction ability to HPAM was polymerized and the reaction conditions are as following: phenol and formaldehyde in mol ratio 1:2~1:3, in solution with pH= 9~10, under final condensed polymerization temperature 85°C and in condensed polymerization time 30 minutes.
A Combined Algorithm Based on ELM-RBF and Genetic Algorithm
Authors: Xia Qing Feng
Published: October 2014

Extreme Learning Machine-Radial Basis Function (ELM-RBF) not only inherit RBF’s merit of not suffering from local minima, but also ELM’s merit of fast learning speed, Nevertheless, it is still a research hot area of how to improve the generalization ability of ELM-RBF network. Genetic Algorithms (GA) to solve optimization problem has its unique advantage. Considered on these, the paper adopted GA to optimize ELM-RBF neural network hidden layer neurons center and biases value. Experiments data results indicated that our proposed combined algorithm has better generalization performance than classical ELM-RBF, it achieved the basic anticipated task of design.
Synthesis and Characterization of Bagasse Xylan Chlorosulfonate from the Chlorosulfonic Acid/Pyridine Method
Authors: Song Bao Qin , Li He Ping , Yuan Jin Wei , Yang Xu , Wu Guan Ya
Published: October 2014

Bagasse xylan chlorosulfonate was synthesized by the esterification between bagasse xylan and esterification agent which was prepared by the chlorosulfonation from chlorosulfonic acid and pyridine. The effect of reaction parameters such as reaction temperature and reaction time was investigated for esterification of bagasse xylan with chlorosulfonic acid by single factor experiment. The degree of substitution (DS) of Bagasse xylan chlorosulfonate was up to 1.41 when the reaction was performed at temperature 45°C for 4.0h. The IR spectrometry revealed characteristic absorption peaks of the S=O and S―O at 1121.78cm-1 and 803.20cm-1, and this explained that bagasse xylan backbone has been joined the sulfate radical groups and bases successfully. The microstructure of bagasse xylan chlorosulfonate was also investigated by SEM.
Grey Modeling Method and its Application in Prediction of Aviation Safety Time Series
Authors: Gan Xu Sheng , Li Xiang Yong , Chen Jin Liang , Zhao Hai Tao
Published: October 2014

To realize the reasonable and effective safety management and decision-making in aviation productive activity, the flight safety time series can be used to mine the statistical law for the assistant of accident prevention. Based on this purpose, Grey modeling theory is introduced in the field of the aviation safety analysis. The actual example shows that, the established GM (1, 1) model for flight mishap data of USAF has a good prediction for future years, especially for the accident data that follows or approximates the exponential law.
Oil Pipeline Simple Sampling Thief Optimization Research
Authors: Yang Jing , Chen Zhe , Yang Xue
Published: October 2014

Oil field sampling proceeds mostly in the vertical tube,Sampling unit 1 is for the original sample shape, the shape of a sampler 2 for now, But for the simple sample size, sampling temperature, liquid flow in the tube, the resistance in the process of sampler loss, high containing H2S , and so on and so forth have an effect on the moisture content discretion whether have not yet been determined。In this paper, by using fluid calculation software---FLUENT proceeds numerical simulation calculation, and guide the actual problem through the theoretical knowledge.
Hand-Painted Curve Fitting Method Based on NURBS Curve
Authors: Liu Shu Qun , Sun Kun
Published: October 2014

In hand-drawn graphics modeling method, the input to the system free hand draw curve is the first step in modeling. Effective fitting the curve of the input is the key to modeling effect is good or bad. For noise, free shape features of hand-painted curve, presents a method of using NURBS curve fitting of hand-painted curves. Experiments show that using NURBS hand-drawn curve fitting, the fitting effect is good, easy to modify, for later use of curve, not only can be used in hand-painted curve modeling system, can also be applied to the mainstream way of WIMP modeling system.
Optimal Adjustment Control of SISO Nonlinear Systems Based on Multi-Dimensional Taylor Network only by Output Feedback
Authors: Sun Qi Ming , Yan Hong Sen
Published: October 2014

On the basis of the original multi-dimensional Taylor network, the control input item is added to constitute the nonlinear dynamic model, which is used to optimally control SISO nonlinear system only by output feedback without both meeting the Lipschitz condition and needing the state observer or the system disturbance estimation. Parameters of the multi-dimensional network with the control input item are trained by the conjugate gradient method. Through the simulation, it is demonstrated that the multi-dimensional Taylor network used as the optimal SISO nonlinear system regulator is effective.
Step Adaptive Normalization Blind Source Separation Algorithm
Authors: Yin Hong Wei , Li Guo Lin , Lu Cui Hua
Published: October 2014

An algorithm of step adaptive normalization BSS(SAN-BSS) is proposed to solve the problem that the traditional switching BSS algorithms are sensitive to the types and the number of the source signals. The proposed algorithm improves the original ones’ stability by making use of the normalization mechanism to modify the cost functions, and realizes the adaptive updating of the step size by combining the signals’ separation process with the summation of the edge negentropy. The simulation results show that when the number of the source signals improves or the types of the signals change, the proposed algorithm can keep good separation effect. Compared with the original ones, the separation accuracy of our proposed algorithm improved 98%, and the number of iterations reduced nearly 60%, which improved the stability and the separation speed of the algorithm greatly.
Multi-Frequency Delta-Kicked Models for the Quantum Ratchet Effect
Authors: Chen Lei , Xiong Chao , Xiao Jin , Yuan Hong Chun
Published: October 2014

We investigate two multi-frequency delta-kicked models for the quantum ratchet effect, in which a flashing multi-frequency potential periodically acts on a particle. Ratchet currents emerge when quantum resonances are excited. Currents in multi-frequency models may be stronger than those in the previous two-frequency model. Our work expands upon the quantum delta-kicked model and may contribute to experimental investigation of the quantum transport of cold atoms.
Hybridizing Invasive Weed Optimization and Simulated Annealing Algorithm for High-Dimensional Function Optimization
Authors: Hou Lu Yang , Shi Yan Jun , Zheng Xiao Jun
Published: October 2014

We herein propose an efficient algorithm (called IWOSA herein after) hybridizing invasive weed optimization (IWO for short) with the simulated annealing (SA) algorithm. The IWO is a new algorithm proposed to solve actual practical problems, which imitates the invasive behavior of weeds in nature. In the further research IWO algorithm did not show its efficiency in high-dimensional problems, and lacked directivity in the process of IWOSA iterations. To deal with this problem, we employed IWO to provide diversity to explore solution and Metropolis criterion of SA to provide more precise guidance, and tried to improve accuracy and convergence speed by these steps. To test the proposed algorithm, we compared IWOSA with original IWO through high-dimensional optimization benchmark functions. The computational results showed the efficiency of our algorithm.
An Overview of the Research of Plasma Sheath
Authors: Zhao Liang , Bao Wei Min , Gong Chun Ye
Published: October 2014

The plasma sheath can be regarded as a model of a phenomenon of spacecraft reentry or hypersonic vehicles and causes so called radio blackout, which interferes with radio signals. This paper gives a survey on several aspects of plasma sheath, including the characteristic of plasma sheath, experiments to deal with the blackout and numerical solutions. The numerical methods includes WKB, finite-difference time-domain method, particle-in-cell method, CFD based method and Monte Carlo method. Some discussions are also presented.
Using of Downsampling Theory Base on Shannon in Software Radio
Authors: Li Mei
Published: October 2014

The theory of down sampling technique base on band-pass sampling and using inSoftware radio is introduced in this paper. We provided an achievement method ofNumerically controlled oscillator (NCO) in digital down converter of down samplingtechnique in the article.
Periodic Signal Detection in Ship Radiated Noise
Authors: Hu Cheng Jun , Zheng Yuan , Zhao Han Bo
Published: October 2014

Periodic signal is abundant in ship radiated noise. Its detection is an important step towards active control of ship’s acoustic signature. Based on power spectrum analysis and DEMON analysis, an approach to detect line spectrum and modulation spectrum of ship radiated noise is proposed. Periodogram method is used for power spectrum estimation. The separation of line and continuous spectrum, false positive removal, and line spectrum merging are conducted to improve the quality of detected characteristic line spectrum. Via DEMON analysis, steady physical characteristics including propeller’s rotational speed and number of blades are obtained. Finally, the effectiveness of the approach is demonstrated by simulation results.
Secondary Classification on One-against-Rest Multiclassification Structure
Authors: Ge Hai Miao , Wang Li Guo
Published: October 2014

One-against-rest (OAR) is a well known multiclassification structure, which is an extension from binary classifiers. It has shown its great potential in pattern recognition and hyperspectral data processing. However, existence of unclassified region limits its application. In this paper, a new multiclassifier based on OAR combined with one-against-one (OAO) structure is proposed. In the multiclassifier, OAO is used to classify the unclassified region to improve performance of OAR. At the same time, the formation of unclassified region is discussed, and the pattern of selecting classifiers for secondary classification on unclassified region is proposed. To compare secondary classifiers and prove the conclusion, other six classifiers are selected , which are decision tree (DT), minimum distance (MD) based on Euclidean distance, MD based on Euclidean distance with kernel function, MD based on Mahalanobis distance, spectral mapping classifier (SMC) and maximum likelihood classifier (MLC). The SVM is used for OAR, OAO and DT in experiment and a hyperspectral remote sensing image is used as testing samples.
Hopfield Neural Network Modeling Method Based on Subset KPCA with FCMC Clustering
Authors: Luo Xiang Jie , Li Xiao Yong , Qu Hong , Meng Yue Bo
Published: October 2014

In order to improve the performance of nonlinear modeling, a Hopfield neural network modeling method based on Subset Kernel Principal Components Analysis (SubKPCA) with Fuzzy C-Means Clustering (FCMC) is proposed. The simulation result shows that, the performance of the proposed method is better than that of Hopfield neural network based on KPCA. It also is effective and feasible to establish the model for the estimation of missing flight data.
Research on Application of Camshift and Kalman Filter Algorithm in Video Object Tracking
Authors: Guo Cheng Yi , Fan Wen Bing
Published: October 2014

When the background is complex and there is a lot color similar pixel interference, it may lead to location and size of Camshift algorithm’s search window abnormal so as to tracking failure. Aiming at these problems, this paper proposed a algorithm that combinating Camshift algorithm and Kalman filter. Kalman filter can predict the position of the moving object. Camshift algorithm adjusted the position and size of search window by using the prediction, so as to ensure the correct operation of the Camshift algorithm. Experimental results show that the proposed algorithm can effectively overcome the large area of similar color background and occlusion and many colors similar moving targets interference and other issues, improve the accuracy and robustness of target tracking algorithm.
Evaluation of Node and Link Importance Based on Network Topology and Traffic Information
Authors: Du Xun Wei , Liu Jun , Guo Wei
Published: October 2014

For awareness of the network situation, this paper proposes a set of indicators that can assess the importance of nodes and links combining with network topology and traffic information, their generating algorithm is given at the same time. Under the premise of determined network routing protocols, this algorithm is capable of assessing the importance of nodes and links based on the structure and operation state of network. In this way, it can show the special property of the unit position in the network, and can reflect the impact to each part due to the network state change so that network administrators can manage network reasonably.
The Degrees of Freedom for MIMO Interference Broadcast Channels with no CSIT
Authors: Ren Hai Ying , Liu Yuan An , Liu Fang , Gao Jin Chun , Liu Kai Ming , Xie Gang
Published: October 2014

Multiple-input multiple-output (MIMO) interference broadcast channel (IBC) plays an important role in the modern wireless communications. The upper bound of degree of freedom (DoF) and corresponding achievable schemes have been investigated. However, all the achievable schemes require perfect channel state information at transmitters (CSIT). In the absence of CSIT, the DoF value is still unknown. This paper mainly focuses on theG-cellK-user MIMO IBC, where there areMantennas at each transmitter andNantennas at each receiver. The transmitters only know channel coherent time internals rather than the values of channel coefficients. The users in the same cell are assumed to be able to share the channel information. Based on a heterogeneous block fading model, a blind interference alignment (IA) scheme is proposed for this scenario. We show that when and , then a total of degrees of freedom (DoF) can be achieved. The inner bound is same with the decomposition DoF upper bound.
Analyzing and Comparison of the Operational Performance of Typical Cyclones
Authors: Li Kun , Li Xue Bin
Published: October 2014

Through analyzing the operational performance of typical cyclones, including pressure drop and flow ratio, few operation features of the cyclones with different design has been deduced. The relationship between design and the operational features has also been analyzed. This paper mostly introduced the variety between the pressure drop and flux and the outlet size impacting on the flow ratio.
A Source-Based Data Aggregation Algorithm for Wireless Sensor Networks
Authors: Fan Guang Yu , Liu Wen Hong
Published: October 2014

The wireless sensor networks (WSNs) are usually deployed among widely area for environmental monitoring, data collection and other applications. In order to reduce the energy consumption and extend the lifetime of WSNs, as well as receive the data quickly, a source-based data aggregation algorithm (SBDA) for clustering wireless sensor networks is proposed. The method aggregated the data from sensor nodes and marked different transmission priority for the data. Simulation results show that, compared to existing protocols, the proposed method achieves a longer life time, and a lower packet drop ratio.
Research on Mobile Commerce Development of Huanggang City
Authors: Zhou Hai Qiong , Zhan Yuan
Published: October 2014

With the Internet and the rapid development of wireless communications technology, online shopping e-commerce model has been widely accepted.At the same time, people use the desktop computer to have access to a wired network outside, and they also begin to receive information and services through the cell phones,PDA,small quick and mobile equipment.This kind of new commercial trading patterns are produced, and obtained the preliminary application.In this article,we discussed the development of Huanggang mobile business,the situation status of mobile commerce,its existed problems and future development direction through the investigation of the development situation of Huanggang mobile commerce.
Study on the Improvement of MUSIC Algorithm Fire Wireless Communication
Authors: Ni Bin
Published: October 2014

Music algorithm has good spatial resolution, provides the possibility to further improve the performance of fire radio communication system, but the algorithm in the target range rapidly changing circumstances poor stability. Aiming at this problem, this paper proposes a MUSIC algorithm based on time domain analytical signals (TAMUSIC, Time-domain Analysis MUSIC). The TAMUISC algorithm first constructs analytical time-domain signal; then the time domain analytical signal covariance matrix; finally the covariance matrix eigenvalue decomposition, the noise subspace estimation results of spatial spectrum. The simulation results show that, TAMUSIC algorithm in target azimuth change quickly, compared with the conventional MUSIC algorithm, need a short observation time, observation has smaller variance.
Improving the Topography of Sample Surface by Controlling Redeposition Effects
Authors: Gu Qiong Chan , Jiang Xiao Xiao , Lv Jiang Tao , Si Guang Yuan
Published: October 2014

The FIB system utilizes ions (gallium, normally) produced by a liquid-metal source to scan over a sample surface and sputter away bulk material. It has been extensively utilized for specimen preparation for a wide range of analytical techniques owning to its capability of high spatial resolution imaging, milling, and deposition. Here, we demonstrate a novel way to control the redeposition effects during FIB milling. Significantly improved sample surfaces are shown and the results are verified by high magnification scanning electron microscopy.
Research on Information Security and Privacy of Libraries in Big Data Era
Authors: Sun Ning Ning , Ma Li Hua
Published: October 2014

In the big data era, the security and protection of users’ privacy have become a research focus of libraries, especially the protection for users’ data privacy is of vital importance. This paper analyzes and discusses the features of libraries in big data era, discusses the influence of big data era on information security of libraries, and proposes big data-related scientific problems which shall be solved in terms of information security.
Simplified Calculation Method for Deflection of Concrete Cellular Slab
Authors: Yang Xiao Hua , Zhou Cao Yang
Published: October 2014

The continuity of concrete cellular slab was damaged by tubular hollow tubes which are arranged in slabs in parallel and the mechanical properties of slab exists anisotropy leading by different shapes of cross section in both directions of parallel and vertical to hollow tubes. Slab stiffness is weak greatly in direction of parallel to hollow tubes. For concrete cellular slab, the mechanical and deformation properties have been studied, the rigidity and stiffness ratio formula in both directions are been given. Orthotropic slab analogue method that is simplified calculation method for slab deflections are put out. The calculated results show that this method is adaptable and processes are simple. The calculated results are close to with engineering practices.
Design and Implementation of Content Management System Based on J2EE
Authors: Tang Zhi Chun , Chen Ning Fan
Published: October 2014

With the enrichment and development of network applications, many websites can't quickly follow large amounts of information derived and business model changes, it often spend a lot of time, manpower and material resources to update and maintain. When the website expands, the work is more complex to integrate inside, outside network and the branch website, even integration of inside and outside network and the branch website work become more complex, even the new website maybe will be built up possibly. In order to solve these problems, the information system required to fully ensure the work efficiency. The function is complete to meet the various doorways "gatekeeper" needed for the application, and to ensure t the published information is accurate. Staff can construct a unified style powerful professional website with content management system. But they don’t need learn a complex construction technology and too much complex web language.
The Research of the Design for Storage System on Supply Chain Logistics Park
Authors: Dong Chong
Published: October 2014

with the rapid development of information technology, put forward higher request to the enterprise management, enterprise resources constitutes the core content of modern enterprise information management, and logistics plays a more and more important role in the enterprise competition. In this paper, in order to reduce the inventory cost and improve enterprise market reaction ability, for the purpose of warehouse management based on supply chain, according to enterprise warehouse management problem, on the basis of using RFID technology, through detailed analysis of the actual demand of enterprise, it is based on B/S architecture for the design and development of a logistics storage system management system.
Research on Application of Computer Technology in the Virtual Reality in Sports
Authors: Li Guang Xue
Published: October 2014

The computer virtual reality technology is a new technology in recent years. It has been widely applied to various fields, and plays an important role in Sports. Analysis of the characteristics of virtual reality technology, its technical advantages, which are combined with the sports training, to improve the technical level of athletes in college students and the quality of training, make contribution for the athletics sports reserve talent reserve in China.
Study on CMM-Based Software Quality Assurance Process Improvement - A Case of the Educational Software Quality Assurance Model
Authors: Huang Ai Ming , Deng Guang Shan , Hu Jun , Huang Yong Jun
Published: October 2014

This paper mainly make a theoretical research and exploration on software quality assurance quality assurance improvement based on CMM process, with the educational software quality assurance model as an example. It elucidates the relationship between educational software process improvement and quality assurance, and explicits the importance of educational software development process improvement to the quality of educational software. Additionally, it discussed the establishment of educational software development model on the basis of the waterfall model of traditional software development, and construction of process quality management models and platforms based on CMM educational software process improvement.
Research on the Phase Center of Uniform Linear Array
Authors: An Zhi Juan , Zhang Yan Dong , Xu Liang
Published: October 2014

Accurate estimation of array’s phase center is of great importance in navigation, tracking and other aircraft and aerospace systems. In this paper first the effect of reference point on the phase pattern of a uniform linear array is studied and the phase center of the array is estimated. Then the effect of beamsteering on the location of phase center in phased arrays is theoretically analyzed, finally numerical simulations are carried out and the results are in good agreement with the theoretical analysis.
Study on Effects of Earthquake Response of Soft Interlayer
Authors: Xia Xiong , Wang Yi Bo , Xi Sai Ying , Sun Jun , Xu Han Dong , Huang Yi
Published: October 2014

This paper carried on the numerical analysis about the impact on soft soil ground seismic effect according to the buried depth and thickness of the soft interlayer, which took Jiangsu typical stratigraphic distribution and some engineering field as the prototype. In order to analyze the impact of buried depth and thickness of soft soil interlayers on the surface of the ground motion parameter, this paper combined with the formation parameters and calculated 3 sections which the thickness of soft soil interlayers were respectively 3m, 5m and 9m, in condition of the buried depth of the soft soil interlayer was constant. Choose ElCENTRO process curve for site seismic response analysis. The results showed that the influence of soft soil interlayer thickness on ground surface acceleration peak value was related with the location of weak interlayer. The influence of soft interlayer thickness on earthquake peak acceleration Amax and the eigenperiod Tg was more obvious; When the thickness of the soft interlayer increased, the earthquake peak acceleration decreased, the maximum speed decreased, and the maximum displacement increase; When the thickness of the soft interlayer increased, The maximum response spectrum decreased, the cycle of response spectrum peak increased, and the eigenperiod increased.
Comprehensive Evaluation on Software Scheme of Sport E-Government Platform
Authors: Jia Wen Wei , Chen Heng
Published: October 2014

With the development of sports, sports e-government platform applications more widely. A number of schemes on how to e-government platform of sports to make decisions, to choose the most appropriate solution is always facing the problem for policy makers. This paper uses linear weighted comprehensive evaluation method for comprehensive evaluation of the program. First, based on the former research results, construct the evaluation index system and weight; Then, follow the steps for solving a mathematical model, including a single index evaluation, the first level indexes and the total target evaluation; Finally, based on a mathematical model three programs to evaluate e-government platform, to choose the optimal scheme. The results show that the research method has clear ideas, the calculation is simple, easy to operate, objective results and other characteristics.
Design of Monitoring Alarm System Based on GPRS MMS
Authors: Han Yong Qi , Ma Li , Guo Hong Liang
Published: October 2014

This system based on embedded technology, MMS wireless communication, etc. Various kinds of modern technology, design a kind of based on GPRS MMS remote monitoring alarm system, this system chooses LPC2132 chip as embedded processor, serial ports, camera, GPRS and infrared pyroelectric sensor module and other hardware. Main funtions as follows: when someone illegally broken into specific space abnormal happens, infrared pyroelectric sensor embedded processor immediately trigger caused disruption, the camera automatically shooting scene image, and transferred to the embedded processor module, embedded processor calls AT instructions through GPRS networks will the collected pictures sent to specify users mobile phone. Users can call or send messages to the system for pictures, but also through the mobile terminal control the system protection and removal. System software embedded in part using development platform ADS development, the key technology was embedded processor interrupt trigger, user instruction processing, control the acquisition and sending MMS etc. This paper analyses the working principle, AT GPRS directive system structure of use, embedded in space, thus realize user of real-time monitoring and alarm.
Effect of CNT/CNF on Thermal and Mechanical Properties of Cement Mortars
Authors: Zhao Yu Han
Published: October 2014

The research integrates both phase change materials (PCM) and carbon nanotube (CNT)/carbon nanofiber (CNF) into cement mortars to improve their thermal and mechanical performances. The PCM will improve the thermal storage capability of the cement mortars, while CNT/CNF can improve their mechanical strength and thermal conductivity. Experimental results show that addition of 1 wt. % CNT and CNF into the cement mortars with 5 wt.% PCM can increase their compressive strength by 23% and 8% respectively, and increase their thermal conductivity by 26% and 9% respectively.
Research on Preventing Copper-Brittleness Process for Hot Rolling Copper-Containing of Atmospheric Corrosion-Resisting Steel Used in Vehicles
Authors: Li Xin Cheng , Liu Jie , Zhu Wei Xing , Tang Yong Chun , Wang Xiao Li
Published: October 2014

Copper in hot rolling copper-containing steel plate can passivate the cathode-anode of corrosion reaction on plate surface and form a dense anti-rusting layer, so the rusting reaction is postponed and prevented, and the corrosion resistance is enhanced. However, copper enrichment around grain boundaries in copper-containing steel plate leads to the formation of net-like surface cracking called copper-brittleness. In this paper, through researching the technologies of smelting, and adding rare earth and heating, a reasonable and feasible production technology is found, which effectively prevents the defect of copper-brittleness.
Low-Noise Asphalt Noise Reduction Principles and Safety Performance Concrete Pavement
Authors: Sun Fu Dong , Yuan Ren Yuan
Published: October 2014

The main objective of this paper is to analyze the principle of low-noise pavement, safety performance and comparison with other noise reduction measures. Furthermore, combining some engineering cases, we analyze the principle of noise reduction for low noise asphalt concrete, and compare the low-noise asphalt concrete with ordinary asphalt concrete. Finally, we sum up the advantages of low-noise asphalt concrete.
Effect of Fine Sand on the Rheology of Fresh Cement Asphalt Mortar
Authors: Peng Jian Wei , Deng De Hua , Yuan Qiang , Fang Lei , Wang Yong
Published: October 2014

Controlling the rheological properties of cement asphalt (CA) mortar has been of great importance to its construction properties. In the present paper, the effects of sand, i.e. particle size and fineness module of sand, sand to paste ratio (Rs/p) and paste film thickness (PFT) on the rheological properties of CA mortar were studied with the use of a rheometer. The results show that the properties and content of sand have a strong influence on the rheology of CA mortar. The yield stress and apparent viscosity of CA mortar is decreased with the increasing of particle size and fineness module of sand and PFT, and the decreasing of Rs/p. The key factor of sand to determine the rheology of CA mortar is the PFT.
Design of a Green Intelligent Building
Authors: Feng Xian Jie
Published: October 2014

Follow the principle of sustainable development of green building, in accordance with the "section, energy saving, water saving, material saving, environmental protection" tenet, into the spirit of green energy conservation principle. From the use of reduced building materials, all kinds of resources and non renewable resources, the use of green materials, waste recycling, reducing emissions of pollutants, etc. In the process of implementation, the use of communications technology, control technology, IC card technology, security, integrated wiring technology and system integration technology, to establish a system of community residents, residents of internal communication center, tenants and external social information.
Effect of a Chloride Deicing Additive on the Performance of Asphalt Mixture
Authors: Peng Chao , Yu Jian Ying , Dai Jing , Zhao Zhi Jie , Fu Jing Yi , Zhao Mei Ling , Wang Wei
Published: October 2014

Effect of a chloride deicing additive (Cl-DIA) on the performance of asphalt mixture was investigated by evaluating the moisture, cracking and rutting resistance. Freeze-thaw splitting test result showed that asphalt mixture containing Cl-DIA weakened moisture resistance to some extent but it was still applicable for asphalt pavement. Wheel-tracking test indicated that Cl-DIA evidently improved the rutting resistance of the asphalt mixture and the weight concentration of Cl-DIA in asphalt mixture had to exceed 3%. Beam bending test implied that Cl-DIA did not help for the cracking of the asphalt mixture.
Homogenization-Based Investigation on Equivalent Constitutive Relationship of Multi-Ribbed Slab Wall
Authors: Li Yun Zhang , Wang Jia Ding
Published: October 2014

Multi-ribbed slab structure (MRSS) is a new structural system developed in recent years, with multi-ribbed slab wall as its main bearing member, which was an orthogonal anisotropic solid constituted by reinforced concrete ribs, frame and embedded solid body. It was suggested to employ asymptotic expansion-based homogenization method to establish the equivalent homogenized model. The method is that it considers the impact of rib relative width and the possion. The research results showed that: the macroscopic constitutive relationship of multi-ribbed wall based by the method has certain accuracy, can provide basis for multi-ribbed slab structure FEM analysis.
Numerical Simulation of Rigid Cylindric Plate's Sinkage on Soil Based on SPH/FEM Method
Authors: Xia Ting , He Gang , Hu Peng , Li Xiao Long
Published: October 2014

Based on smoothed particle hydrodynamics (SPH) and FEM method, the dynamic simulation of rigid cylindric plate's sinking process on soil is studied with LS-DYNA software, and MAT 147 material model is used to describe soil's attributes. The stress distribution and flowing trend of the soil are compared at different period. The simulation results show that the SPH/FEM method is useful to analyze large deformation of soil, and our findings can give helps to the mechanical design of the components interacting with soil.
Quality Control of CSG with P-Wave Speed Measurement
Authors: Lu Xiao Bin , Jia Jin Sheng , Ma Feng Ling , Feng Wei , Meng Li Juan
Published: October 2014

This paper first introduces the basic concept of the CSG (cemented sand and gravel) dam construction. It then puts forward a new quality control method by inspecting the in-situ P-wave speed of CSG as an alternative to the conventional specimen compression tests. Through an extensive experimental program, it is found that there is a good correlation between the compressive strength and P-wave speed of CSG, which makes the P-wave speed measurement potentially an effective and efficient quality control measure to evaluate the CSG strength on site.
Public Landscape Regeneration Design Strategy in the Old City Reconstruction Based on the Restoration Ecology
Authors: Li Jie , Zhang Xiang Ying
Published: October 2014

There are two most important things in old town reconstruction: the functional reconstruction and landscape regeneration. Purpose is to restore its ability of sustainable development. In landscape architecture, planning industry refers to the land for a certain range of perceived visual things and events , as well as the art of relationship with the surrounding space organization. What is the public landscape, the author thinks that the public landscape is within the category of landscape, is open to the general public, is the landscape place for public use, enjoy and entertainment. Such as city square, commercial landscape, street landscape, residential landscape,, mountain landscape, waterfront landscape, etc.Old city reconstruction of four kinds of modes: completely torn down; keep the old city, nearby building auxiliary city; the continuation of historical context, the whole old as sweet; keep the old appearance, update of internal functions. Four patterns, the old as before and update the internal function of two models design provides a platform for regeneration. Environmental regulation is the foundation in the old city reconstruction, public landscape construction is the key, the public landscape regeneration can be designed on the basis of the original resources; using the landscape design methods to existing resources for rebuilding, expansion or repair, realize the value of reuse. The old town has a lot of historic culture, which is the soul of the city, in the process of public landscape regeneration design, place spirit of the city is also the key in the process of transformation. Both the pursuit of enjoyment on the vision and the pursuit of the heart of comfort, regenerative designs are effective methods.
An AD Conversion Based on the Interpolation Parallel Series Circuit
Authors: Hu Ju Fang
Published: October 2014

s. The electronic technology is a key component of digital high-resolution ADC converter. Currently based on comparative parallel ADC conversion time up to nanoseconds, and even nanosecond commercialization devices are also listed a large number with high price. This paper introduces an AD conversion based on the interpolation parallel series circuit. The working mechanisms are reported and the key circuit design is illustrated in details. The experiments are carried out in this paper for examining the circuit. The results show the good performance.
Study on Vibration and Damping of Printed Circuit Boards Treated with Partial Constrained Damping Layer
Authors: Zhou Xiao Dong , Xiong Chang Wu
Published: October 2014

Constrained damping layer (CDL) treatment has been an effective way to suppress vibration level of various structures. by introducing this method into the vibration control system of electronic equipments, this paper firstly discussed the dominant mechanism difference between free damping layer treatment and constrained damping layer treatment, Then base on the constrained layer damping layout optimization method in the vibration system of a rectangle thin board like PCB, a series of experimental investigations were presented on the vibration response of printed circuit boards treated with partial constrained damping layers. as a result, it proves the CDL treatment having good effect on vibration response control of PCBs.
Whole Simulation of Single Phase Energy Metering Chip
Authors: Wang Chun Yu , Yu Hai Bo , Xu Ying Hui , Lei Min , Liu Jia
Published: October 2014

Metering chip is the core of electrical meter. The accuracy of metering chip affects the measurement property of electrical meter, so it’s necessary to study the behavior of it. The simulation studies of metering chip are mostly based on part sections of it, but lack the whole simulation model. This paper proposes a Simulink model of whole metering chip based on certain one-phase metering chip by designing the ADC, high pass filter (HPF), low pass filter (LPF), and so on, and make simulation of this model. The result shows that the accuracy of this model is about 0.1%, which verifies the effectiveness of it.
Research on a Distribution Line Zero Mode Current Traveling Wave Fault Location Method Immune from Wave Velocity Affection
Authors: Chen Liang , Zhang Xiao Feng , Li Geng
Published: October 2014

This paper presented a research on zero mode current traveling wave based distribution line fault location method which is not affected by wave velocity. The mathematical expressions of initial distribution line fault current traveling wave, reflection wave of the fault location and the refraction wave of opposite ends are derived. And the directivity relationship and identification method of these three element are fully analyzed. Based on the research process mentioned above, the fault location method introduced in this paper eliminates the error produced both by velocity propagation and clock synchronization. In this way, the veracity and reliability of short distribution line fault location was improved.
The Research on Electric Process State Spaces of BLDCM Main Module
Authors: Zhong Jun Liu , Gan Yan Fen
Published: October 2014

Based on analyzing the mathematical model of Brushless DC Motor (BLDCM) and the key researching on electric process state spaces of BLDCM main module, taking its one state space as an example, BLDCM system is proposed as a new method of simulation model. This method establish BLDCM dynamic mathematical model, and the simulation is made to verify the theoretical model. Experimental results demonstrate the new method is successfully applied to the design of the electric vehicle drive system simulation.
Design of Excitation Source for Ultrasonic Guided Waves Based on DDS Technology
Authors: Zhou Fen Ping , Jiao Yang , Duan Hui Juan
Published: October 2014

According to the characteristics of ultrasonic guided wave inspection, An exciting power, used for exciting ultrasonic guided waves in pipeline is designed based on DDS and FPGA. The excitation source consists of FPGA, D/A conversion circuit, a low-pass filter circuit and power amplifier circuit. Constructing DDS based on FPGA as the controller and signal generator. Filter circuit and power amplifier circuit are designed in this paper. The experiment results show that the excitation source can have high voltage and high frequency output capability, and can generate desired signal type with a good accuracy to fit the requirements in practice. It can be conveniently used for pipeline ultrasonic guided wave detection.
Application of Wireless Transmission Technology in the Detection of Capacitive Charged Device
Authors: Zhao Jian Li , Bai Quan Xin , Zhang Peng
Published: October 2014

The capacitive device is a important equipment in the power system. Its working state is usually monitored by charged detection. However, the traditional detection method needs a lot of cable wiring for each test, which makes a big security hidden danger. In order to solve the problem, a new wireless measurement method based on 2.4G wireless and Bluetooth technology is proposed in this paper, which not only achieves wireless synchronous measurement of current and voltage, but also meets the requirements of capacitive equipment charged detection.
The Research on Development of EHV Line Longitudinal Protection Debugging Device in Intelligent Substation
Authors: Li Rui , Song Shu Yong , Ma Zhen Guo , Zhang Yue
Published: October 2014

In smart substation, transmission line longitudinal protection debugging cannot take place, before the line communication channels construction, that cause it often occur that not fully debug, choose a suitable time for debugging in advance. In this paper, based on the analysis of the longitudinal protection debugging process, combining with the computer technology, and 3G/4G communication technology, design a set of intelligent substation EHV-line longitudinal protection device of temporary channels. Ensure, in intelligent substation, carry out advanced debugging, select the appropriate time debugging, debugging completely, before the longitudinal channel built, and establish a reliable foundation for the normal operation of the longitudinal protection equipment.
Analysis of some Safety Assessment Standard on Grounding Systems
Authors: Shang Li Qun , Wang Shou Peng , Cheng Gang
Published: October 2014

There are different safety assessment standards of grounding systems in different countries. Some of standards are widely adopted in the world, such as IEEE-80-2000, IEC-471-1, EA-TS41-24 and BS7354. In order to choose reasonable safety assessment standard in the design of grounding system of substation, these four standards are compared using a practical case. It showed that BS7354 is more conservative than IEEE-80-2000 and EA-TS41-24, and the definitions of allowable current are different between IEEE-80-2000 and IEC-471-1.
A Study on Wafer and Feature Size
Authors: Hu Xiao Ming
Published: October 2014

the paper introduced the bare silicon crystal how to become a wafer .then, it told the processing of wafers to produce integrated circuits .Today, most integrated circuits (ICs) are made of silicon. every integrated circuit is tested and functional and formed a dies. At last , the article explain feature size and the number of gross die per wafer (DPW).