bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Three-Dimensional Fine Geological Modeling in Complex Fault-Block Reservoir with Low Permeability
Authors: Yu Jiang Tao , Zhang Jin Liang , Chen Shuang Yan
Published: February 2014

Three dimensional geologic modeling is a powerful tool for reservoir development stages of geological study, it can solves many traditional problems existing in geological research through the establishment of precise three dimensional geologic modeling and represents an important direction for the further development of oilfield geological research. Low permeability and thin interbed reservoir of complex fault block have the characteristics of severe heterogeneity, complex relations of oil-water distribution, poor development effect, it is necessary to built high precision three dimensional geologic modeling in the process of oilfield exploration and to fine reservoir description and prediction on this basis, finally reach the purpose of reduce the risk of development and improve the economic benefit. This paper makes geological modeling research and builds structural models sedimentary micro-facies models and phased property model for Zhuzhuang block of Jiangsu oilfield by utilizing three dimensional geologic modeling technique and petrel geology modeling software on the basis of integrated using of geology, logging, oil production test, production of dynamic information, thus it provide a solid basis for reservoir's development and adjustment.
Research on Classification Effectiveness of the Novel Mamdani Fuzzy Classifier
Authors: Zuo Hong Yan , Luo Zhou Quan , Wu Chao
Published: February 2014

A novel Mamdani fuzzy classifier based on improved chaos immune algorithm is developed, in which bilateral Gaussian membership function parameters are set as constraint conditions and the indexes of fuzzy classification effectiveness and number of correct samples of fuzzy classification as the subgoal of fitness function. Moreover, Iris database is used for classification effectiveness simulation experiment. The results show that Mamdani fuzzy classifier based on improved chaos immune algorithm can effectively improve the prediction accuracy of classification of data sets with noises and outliers.
Algorithms of Admission Control and Batch Scheduling of On-Demand Broadcast with Deadlines
Authors: Chen Chun Li , Lv Jing Song , Jiang Yan
Published: February 2014

Owing to its potential to satisfy all outstanding requests for the same data item with a single response, on-demand data broadcast becomes a widely accepted approach to dynamic and scalable wireless information dissemination. In the existing works, clients must wait until the deadline of their requests in the case the requests cannot be satisfied. In this paper, broadcast admission control is introduced to data broadcast systems such that the clients can be informed in advance on the result of admission control for the requests. Furthermore, a matching based allocation scheme is proposed for batch scheduling to maximize data sharing among requests. Simulation results show that our proposed algorithms have better comprehensive performance than traditional algorithms in terms of scheduling, admission control and QoS.
Research on Automatic Identification of Substation Circuit Breaker Based on Shape Priors
Authors: Wang Ting , Yao Chen , Liu Jun , Chao Long Zhang , Shao Gang Hu , Qun Hong Gu , Ming Yue Ja
Published: February 2014

High-pressure circuit breakers are very important and it undertakes the disconnection and connection control of high voltage transmission lines. It is one of the equipment of substation daily inspection. State of breakers are judged by open and close characters label, so a shape-prior active contour model to realize state automatic recognition of breaker images collected by inspection robot is presented in this paper. Shape-prior active contour model combines the shape information with CV model to build energy functional model, then set up initial position curve by a priori knowledge and drives the curve evolution in minimize energy functional process, the curve position is the character label contour when energy functional shows minimum. We do experiment for the algorithm on different images, demonstrate that the algorithm based on known character contour, have good segmentation results of circuit breaker in the image character recognition accuracy and applicability when the circuit breaker character is actually partial occlusion, local deformation, scale changes.
Retrieval and Matching of Case Based on Gray-Relational Theory
Authors: Hu Yu Lan , Song Yang
Published: February 2014

According to the characteristics of complex mechanical product, we put forward case matching algorithm in case-based reasoning(CBR) ,which uses grey correlation theory,combines with the variation coefficient method and Euclidean distance.And case retrieval and matching model was established.An example of CNC machine tool design was provided to validate and prove its efficiency and feasibility
Study on Real-Time Traffic Data Modification Method Based on the Improved Etkin Interpolation Algorithm
Authors: Gao Qiang , Gu Yuan Li , Zhang Teng Hua
Published: February 2014

Identification and modification of real-time traffic data has been the basic and critical part in the intelligent transportation system.Through the research to a large number of data,the original data is divided into the correct data,the irregular time-point data,inaccurate detection data,missing data and event data. Etkin interpolation algorithm is to gain the values of specified missing value by a successive approximation method with high order polynomial and implemented by using a successive approximation of multiple linear combinations.The paper selects improved Etkin interpolation algorithm to correct the traffic data and makes use of the DongZhiMen Bridge North 728 meters' 2001 detector data for example.The algorithm not only considers the practicability in the engineering practice,but also improves the accuracy of real-time data.
Synthesis and Properties of Novel Phenolic Resin Grafted Hydrolyzed Polyacrylonitrile Copolymer as Fluid-Loss-Control Additive
Authors: Zhang Zhi Lei , Zhang Yi He , Zhou Feng Shan , Tong Wang Shu , Meng Xiang Hai , Zhang Qian , Meng Zi Lin
Published: February 2014

A copolymer was prepared by grafted a novel phenolic resin to hydrolyzed polyacrylonitrile as fluid-loss-control additive. The novel phenolic resin used Bisphenol A residues as raw materials. Results of Fourier transform infrared spectroscopy (FTIR) showed that the two polymers were grafted into together. It was found that the copolymer gave a well performance under high temperature and high pressure and saline pollution.
Study on the Equipment Acquisition Information System Architecture
Authors: Wu Yan Mei , Guo Kai , Xu Peng Wen
Published: February 2014

Equipment acquisition information system architecture is an effective way to realize information integration and sharing. Based on the military information systems architecture and combining with the operational characteristics of the equipment acquisition, the equipment acquisition information system architecture is investigated from three aspects, namely business view, system view and technical view.
Research and Realization of Online-Shopping Customer Segmentation Based on RFM Model
Authors: Zhang Li , Wang Yan
Published: February 2014

In this article, it provided one way to build Customer Centered data sheet based on RFM for online shopping, then with K-Means algorithm in SAS EM, succeeded in clustering the samples. That was meaningful for further study on characteristics of every segment. At the end, the writer summarized the meaning of customer segmentation and inadequate of the model.
Semantic Web Service Composition Standards and their Applications
Authors: Beraka Mutaz , Mathkour Hassan , Gannouni Sofien
Published: February 2014

Web services allow developers to create, generate and compose them at runtime. However, a single web service is not sufficient to achieve most of user demands in its own. This gives rise to the concept of web services composition of is an appropriate solution to maximize the benefits of web services. Web services composition has received a great attention from different communities. A number of different semantic standards/specifications have been proposed to tackle this issue. These standards are Ontology Web Language and Web Service Modeling Ontology. In this paper, we provide an overview of these standards and present a comparison between them. We also overview different applications that have developed based on each of these standards and present comparisons among them.
Face Recognition Based on Maximum Spanning Tree Kernel and Gray Kernel
Authors: Jiang Qiang Rong , Wu Zhe
Published: February 2014

Face Recognition has been recognized as a major research field in pattern recognition and computer vision. This technique is widely adopted, because of its unique convenience, economy and high accuracy compared to other biological recognition techniques. An interesting and important challenge is thus to investigate high-efficient recognition algorithm. The introduction of kernel methods in pattern recognition has been received significant attentions in the recent several years, and gray kernel and graph kernel are two popular approaches. The paper proposes maximum spanning tree kernel and region histogram intersection kernel; moreover, experiments demonstrate that higher face recognition accuracy can be achieved by multiple kernels which are the combination of them.
Provable Data Possession in Cloud Computing
Authors: Shuang Tan , Zhang Jian Feng , Chen Zhi Kun
Published: February 2014

Several trends are opening up the era of cloud computing. It moves the application software and databases to the centralized large data centers, where the management of the data and services may not be fully trustworthy. This work studies the problem of ensuring the integrity of data storage in cloud computing. We use RSAs homomorphic property to construct the protocol of provable data possession. In our protocol, we can aggregate multiple Provable Data possession into one, and reduce the overhead of communication. While prior work on ensuring remote data integrity often lacks the specific implementations, this paper achieves an effective proof of storage protocol. Extensive security and performance analysis show that the proposed scheme is highly efficient and provably secure.
A Comparison of NARX and BP Neural Network in Short-Term Building Cooling Load Prediction
Authors: Xu Yan Li , Chen Hong Xun , Guo Wang , Zhu Qiu Yu
Published: February 2014

A comparison of nonlinear autoregression with exogenous inputs (NARX) neural network and back-propagation (BP) neural network in short-term prediction of building cooling load is presented in this dissertation. Both predictive models have been applied in a group of commercial buildings and analysis of prediction errors has been highlighted. Training and testing data for both prediction models have been generated from DeST (Designers Simulation Toolkits) with climate data of Shanghai. The simulation results indicate that NARX method can achieve better accuracy and generalization ability than traditional method of BP neural network. This work provides a key support in smooth and optimizing control in air-conditioning system.
Functional Orientation and Structure of the Higher Education Management Information System
Authors: Ma Xiao Ying , Huang Jian Hua
Published: February 2014

To meet the needs of universities realizing their own development model, it is important to discuss the issues of application of management information system based on informationized education. Application of management information system based on informationized education has been gradually implemented in universities. Under the action of "productive forces determine the relations of production". The reform of the teaching mode of universities has been deeply affected. Therefore, it is necessary to establish a standardized teaching system, improve the level of teaching, promote the interaction between teaching and learning, and help students to learn, obtain student feedback, and complete the functional orientation of teaching evaluation. The key of structuring higher education management information system is not the traditional physical state, but need to meet the dialectical relationship between ‘productivity’ and ‘relations of production’.
Research on the Evaluation Mechanism Construct Strategy of Investing Benefit for Higher Informationized Education
Authors: Ma Xiao Ying , Pang Yan Rong
Published: February 2014

Evaluation analysis of educational information of higher education investing benefit can be said to be a complex project, the benefit mainly includes three aspects: teaching benefit, science researching benefit and management benefit. According to the evaluation mechanism construct strategy of investing benefit for higher informationized education, we have been conducted investigations. The results show that the main factors influenced the investing benefit for higher informationized education include infrastructure, staff size, computer high branch technology, the utilization of multimedia network and the utilization of information resources on scientific research. In order to understand the influence factors of the investment benefit, maximize the benefit of investing for higher informationized education, and highlight the effect of informational, this paper have conducted corresponding research in the system of higher informationized education.
Cloud Computing-Oriented Virtual Machine Live Migration Mechanism
Authors: Fang Yi Qiu , Song Zhi Chao , Ge Jun Wei
Published: February 2014

In the process of memory pre-copy, aiming at the characteristic which the dirty pages may be re-transmitted, dirty pages based on the probability prediction pre-copy mechanism is proposed, which aims to reduce the data transmission and total migration time. The mechanism uses temporal locality principle, on the pages before transmission, probability prediction for memory page, give priority to transmission of dirty pages prediction probability low memory pages, avoiding high dirty pages resend. Simulation results show that: the mechanism can reduce the amount of data transmission, reducing downtime and total migration time.
Research on Service Update Dynamically Based on OSGi Frame
Authors: Zhou Liang , Cao Nan Ya , Li Lu , Ke Li Xin , Wu Kai Jun
Published: February 2014

It is a key problem for a 7*24 running system to update and maintain online. According to the feature of OSGi (Open Service Gateway Initiative) framework, current service dynamic update policies for OSGi framework are analyzed. In order to solve the problem of service mutual consistency and service state consistency during service update, the service dynamic update policy based on publish & subscribe model is presented. This policy is based on quiescent state theory to ensure mutual consistency when services are updated online. The process of the dynamic service update policy is described by Petri net. We realize the policy using Event Admin Service in the experiment with well-defined program model. The result shows that the policy is validate and feasibility.
Research on BP Neural Network Optimization Based on Ant Colony Algorithm
Authors: Wang Rui , Wang Na
Published: February 2014

This paper presents an ant colony algorithm and BP algorithm together to complete the learning algorithm for neural networks ACO-BP algorithm. The algorithm adopts the ant colony algorithm for global optimization of the network weights, overcome the disadvantage of BP algorithm that is easy to fall into local optimum; then, the optimal weights found by BP algorithm as the initial value, further optimization. Finally, the simulation experiments show that, if the network structure is determined by the condition, this algorithm not only speeds up the convergence speed of the improved ant colony algorithm of optimal solution, but also can avoid falling into local optimal path. It will increase the reliability.
Research on Vehicle Path Planning Base on Intelligent Transport System
Authors: Wang Rui , Wang Na
Published: February 2014

Typical shortest path is Dijkstra algorithm, its time complexity is O (n2). A map of the citys road network has many nodes, if we use the Dijkstra algorithm, the time complexity of the algorithm is too high and the speed of resolution this problem is slow. In order to change this situation, we are discussed from the aspects of algorithm design, puts forward the improved bidirectional search algorithm. Practice has proved that, the improved algorithm can improve the search speed and it suitable for intelligent transportation system.
Development and Design of Agriculture Product Circulating Information System under the Internet of Things
Authors: Zheng Bi Geng , Wang Heng
Published: February 2014

This paper studies on the solution of the Internet of things technology in the application of circulation of agricultural products, designed the model of Internet of Things in circulation of agricultural products field, and constructed the circulation of agricultural products on the Internet of Things, to achieve real-time location of agricultural products, safety traceability of agricultural products and inventory management. By research on using key technologies of Internet of Things, can improve the efficiency of the agricultural products logistics; reduce the cost of agricultural products circulation effectively. And it also can provide agricultural products information services more efficient, convenient and accurate for agricultural products, vendors and general users.
Application of Informational Technology in Language Teaching
Authors: Wang Si Yan
Published: February 2014

Nowadays informational technology is being used in more and more fields. Multimedia, computer, even blog and network become one platform of language teaching and learning. Here an empirical research was conducted to find the effects of application of such technology in foreign language learning. Based on the analysis, the paper explores the correlation between application of technology and English proficiency, and puts forward some constructive suggestions.
Bimetallic Gold-Palladium Supported on 5A Zeolite and their Catalytic Activity for Vinyl Acetate Synthesis
Authors: Mo Xian Zhong , Hu Hua Lin , Tan Deng Feng , Guo Ting
Published: February 2014

5A zeolite supported Gold-Palladium (Au-Pd) bimetallic were prepared and used in vapor phase oxidation of ethylene to synthetize vinyl acetate (VA). The chemical composition of Au-Pd/5A zeolite catalyst was analyzed by a combination of atomic absorption spectrometry (AAS). The structure of Au-Pd/5A zeolite catalyst was characterized by a scanning electron microscopy (SEM) and X-ray diffraction (XRD). The catalytic activity of the Au-Pd/5A zeolite catalyst under laboratory conditions were investigated in vinyl acetate synthesis by a kind of the fixed bed reaction device. The AAS testing showed that Au and Pd supported rate were increased up to the optimum value 91.22% and 93.91% respectively at the ratio of Au/Pd=0.87. The SEM analysis results indicated that Au-Pd alloy particles of 5A zeolite catalyst can grown up and reunited obviously through before and after reaction. The XRD analysis results showed that diffraction peak of Pd (111), Pd (200), Au (111) and Au (200) became sharp gradually with the extension of reaction time, crystalline phase composition and grain size of catalyst became bigger gradually. The results about catalytic activity of the Au-Pd/5A zeolite catalyst shown that with the increasing of the Au/Pd ratio, the space-time yield and selectivity have a best value respectively; when the ratio of Au/Pd=0.87, the space-time yield were 702g/(Lh) and the selectivity were 92.8% at the ratio of Au/Pd =1.13.
Web GIS Research and Application Based on SVG
Authors: Wang Peng , Dong Li Yuan
Published: February 2014

In this paper we use the SVG technology to the field of Web GIS and set up the Traffic Accident Scene Management System (TASMS). Using text format characteristics of SVG, combined with ASP.NET technology and the scripting language JavaScript, we achieved dynamically load geographic information image, quick query and some user interaction functions.
Studied for Mechanism of that Abrasive Water Jet Cutting Metal Materials
Authors: Zou Zheng Long , Duan Xiong , Guo Chu Wen
Published: February 2014

Combining with the electron microscope analysis of the morphology of incision, the mechanism of abrasive water jet cutting metal materials was carried out to explore, for the rational selection of abrasive jet cutting parameters, to extend its application to provide the basis. Study shows that the abrasive water jet cutting metal materials, the material damage mechanism is mainly to yield deformation and failure and shear of grinding damage, grooving formation is mainly caused by falling impact deformation and furrows grinding.
The Research and Design on the Monitoring Platform Based on the Internet of Things
Authors: Hua Zhu Peng , Fang Hou Xiao
Published: February 2014

Multiple sensors with ZigBee wireless communication module composed of environmental monitoring network platform. With ZigBee server/gateway support, this platform could achieve the connection to the Internet, remote monitor temperature, humidity, smoke, noise, etc. through the Internet network, and achieve ZigBee LAN monitoring and status display. The main contents of this paper are as follows : 1the analysis of ZigBee protocol stack layers of protocol network routing protocols, network topology , etc. 2the research of networking in the form of ZigBee, to build the ZigBee network with a star network topology. 3research ARM platform, understand the Linux operating system, and build embedded Web server. Meanwhile, ZigBee server hardware and software platform is built on this ARM platform, porting ZigBee transceiver modules to realize the ZigBee-based wireless gateway. 4the research of checking buildings , humidity, smoke , noise, heat hydroelectric and other states which need to be monitored remotely through servers.
The Application of Computer Software Microsoft Office Word in Sports Drawings
Authors: Zhang Jie , Zhang Bo
Published: February 2014

In this paper the author introduced the application of Word drawing function in sports drawing, the function and skills of common drawing tools, and solved the stubborn problems in writing teaching plan and class by drawing ground device, queue type, teaching organization, and sports human body in practical examples. In this way, the study difficulty level was reduced, the time spent in mastering actions was shortened, the teaching effect and quality was greatly promoted, the application of computers in sports teaching was propagated, and the teaching patterns of sports drawings were enriched.
Study of an Improved Hadoop Speculative Execution Algorithm
Authors: Wang Bao Yi , Pu Xiao Yang , Zhang Shao Min
Published: February 2014

The problems of difference of nodes capabilities and the unevenly-distributed bandwidth of the network, widespread exist in the heterogeneous clouding environment. Together with the users randomness of submitting jobs, the problems above lead to server synchronization problems.Under the platform of Hadoop and the situations mentioned above, we come up with a method which is based on the native hadoop speculative algorithm to solve the problems. Through monitoring the load-balance in realtime, dynamically assessing the performance of the node and making the speculative tasks happened in high-performance node which meantime is the nearest node from input split, the algorithm effectively reduces the occupation of the network and accelerates executing speed. The experiment result shows that the method in the execution of which the speculative tasks has a high ratio, significantly improved the efficiency and throughput of the cluster.
Improvement and Simulation of Artificial Intelligence Algorithm in Special Movements
Authors: Li Jun Heng , Zhao Yan Yan
Published: February 2014

According to the basic principle and the process of evolution of artificial intelligence algorithms, the use of floating point numbers carry out coding and decoding method. On this basis, we can find the constraints of the optimization problem and the conditions of fitness functions for different values of simulation experiments, dig out the best individual of this important influence factor, and the transformation to optimization, and finally applied to 200 meters special physical training simulation in track and field, empirical analysis of effect, to a certain extent for the field of study provides a scientific basis and technical support.
Study on Properties of Al2O3 -CaO-SiO2-CaF2-MgO Slag System
Authors: Guo Jia Meng , Peng Ke Wu , Yi Lei , Ma He Li , Chen Ren
Published: February 2014

Liquidus temperature, electrical conductivity and phase composition of Al2O3-CaO-SiO2-CaF2-MgO slag system were studied. The results showed that the liquidus temperature of the slag decreased with increasing MgO content, and its electrical conductivity increased with increasing MgO content and temperature. When the content of MgO is 5 %, the main phase compositions of the slag are composed of MgAl2O4, Ca2SiO2F2, CaAl4O7 and Ca5Al6O14. When the content of MgO is 7 %, the main phase compositions of Al2O3-CaO-SiO2-CaF2-MgO are composed of MgAl2O4, Ca4Si2O7F2, CaAl4O7 and Ca5Al6O14.And the content of MgAl2O4 and Mg2SiO4 increased with increasing MgO.
Standard Interchange Protocol 2: Theory, Design and Implementation
Authors: Dong Wei
Published: February 2014

In this paper, we conduct research on Standard Interchange Protocol 2 (SIP2). Then, based on the research, a SIP2 class is designed using object-oriented model. The SIP2 class includes several methods, which comprise check in, check out, patron status, and so forth. To demonstrate its functionality, we use the SIP2 class in a new library circulation system. Compared to traditional protocols for transaction in library system, test results show that our implementation of SIP2 class works well and has a better performance.
An Empirical Study of Boosting Methods on Severely Imbalanced Data
Authors: Liu Xu Ying
Published: February 2014

Nowadays there are large volumes of data in real-world applications, which poses great challenge to class-imbalance learning: the large amount of the majority class examples and severe class-imbalance. Previous studies on class-imbalance learning mainly focused on relatively small or moderate class-imbalance. In this paper we conduct an empirical study to explore the difference between learning with small or moderate class-imbalance and learning with severe class-imbalance. The experimental results show that: (1) Traditional methods cannot handle severe class-imbalance effectively. (2) AUC, G-mean and F-measure can be very inconsistent for severe class-imbalance, which seldom appears when class-imbalance is moderate. And G-mean is not appropriate for severe class-imbalance learning because it is not sensitive to the change of imbalance ratio. (3) When AUC and G-mean are evaluation metrics, EasyEnsemble is the best method, followed by BalanceCascade and under-sampling. (4) A little under-full balance is better for under-sampling to handle severe class-imbalance. And it is important to handle false positives when design methods for severe class-imbalance.
LTE-A System Downlink HARQ System-Level Design and Simulation
Authors: Li Xiao Wen , Yu Xiu Ling
Published: February 2014

Hybrid automatic retransmission technology for reducing the error rate and the rate of data transmission system play an important role in the LTE-A system, so designing A good kind of HARQ transmission mechanisms and processes is necessary for system operation, which has guidance for network and terminal. In this paper the main research is the downlink HARQ. Based on the interface between the layers, the paper designs a flow chart for the HARQ, finally, makes a brief introduction of the SDL and TTCN tools and its work principles, based on the previous design and development of code, takes the process of data transmission for instance, by the C code embedded in the SDL, gets the software implementation, and by use of the TTCN tools, makes a conduction of test case, and then by the co-simulation of SDL and TTCN, gets the MSC diagram of the related process, and verify the correction of the previous designed by the analysis of the MSC.
An Improved Refinement Algorithm of Triangular Mesh Subdivision Based on Minimum Weight Theory
Authors: Liu Huai Hui
Published: February 2014

The triangular mesh subdivision to any planar field has been widely adopted in such applicable fields as configurable engineer, computer graphics, and scientific computation visualization and so on because of its well approach to the borderline. Thus, developing and researching on one certain effective and reliable triangular mesh subdivision algorithm has important theoretical and practical meanings. This paper firstly describes a refined algorithm about triangular mesh based on geometrical multi-grid method, and discusses its advantages and disadvantages. Secondly a new refined algorithm about triangular mesh subdivision is put forward by applying Fermat point and its properties as well as the minimum weight theory of triangular meshed subdivision. Finally, this paper proves that this refined algorithm can actually improve the efficiency of triangular mesh subdivision and generate grids amount and quality.
The Studies of Modeling Method for Three Dimension Iterated Function System
Authors: Dong Shun Sheng , Wang Qian , Rong Xia
Published: February 2014

In order to describe the shape of the trees in nature better and simulate the trees realistically, This method that by changing the parameters of affine transformation matrix the different types of three dimensional fractal images are drawn is discussed.and the model of generating three dimensional plant is built based on iterated function system.Finally take an example like a set of images through contractive affine transformation and in the chaosPro environment,the graphics are generated and the different types of natural scenery of trees are simulated,using the established model and translation, rotation and scaling of affine transformation.
Frictional Loss of Prestress Caused by Deflected Tendon
Authors: Shin Kyung Joon , Kim Yun Yong , Lee Hwan Woo
Published: February 2014

Bending of a prestressing tendon by construction error or the radius of curvature at the continuous joint of PSC girders cannot be avoided. However, this kind of prestress loss is not considered in design and construction processes. This study proves that prestress loss occurs at the continuous joint due to local bending of the tendon which is induced by construction error or the radius of curvature. The result shows that a maximum 3 % of prestress loss occurs at the continuous joint for a single tendon.
Study on Critical Moisture Content of Unsaturated Evaporation
Authors: Zhang Hua , Hu Wen Long , Cao Jin Lu
Published: February 2014

Thin layer evaporation tests of three types of soil were conducted by a newly designed humidity-controllable evaporation and penetration measuring system and lasted for 8 days. The whole process of sample mass variation from wet to dry was recorded in the laboratory. The critical moisture content and air-dried moisture content were obtained from evaporation curve, which divided the evaporation process of thin layer unsaturated soil into three stages, including stable rate stage, reducing rate stage and residual stage. The soil water characteristic curves of soils were predicted by Arya and Paris model, the results showed that the critical moisture contents of evaporation process were the same with the water contents corresponding to residue values of SWCC, it is significant to studying on unsaturated evaporation process.
A Determination Procedure of Foundation and Pile Bearing Capacity in Slopes
Authors: Chu Xiao Jie , Chen Shan Xiong , Li Jian , Dai Zhang Jun
Published: February 2014

When there is a ramp, the methods of calculating the foundation and pile bearing capacity are different from the plains situation. Many scholars have been studied determination method of the foundation and pile bearing capacity under the condition of slopes. A program is developed based on the results of previous studies, which can calculate the foundation and pile bearing capacity under the condition of slopes. The program using MATLAB software integrates a calculation method of foundation and pile capacity under slope condition. Combined with numerical examples, the results illustrate the upshots of the calculation methods in the program on the basis of the literature by interpolation method with the adjustment coefficients are accurate. And analyzed the influence of slope ratio on the bearing capacity: capacity and slope ratio was negatively correlated, with the slope ratio decreases, the capacity is on the increase, but the degree of increase based on the slope ratio.
Active Vibration Control of Piezoelectric Material Using Fuzzy Logic Controller
Authors: Hu Tao , Huang Qi Bai , Li Shan De
Published: February 2014

Active control of vibration has been the subject of a lot of research in recent years. This study presents a fuzzy logic controller (FLC) to minimize structural vibration using collocated piezoelectric actuator/sensor pairs. The proposed fuzzy controller increases the damping of the structures to minimize certain responses. The PID controller is used as a contrast controller to the FLC. The numerical simulation results show that the fuzzy approach is much portable than PID method. In summary, a novel vibration absorption scheme using fuzzy logic has been demonstrated to significantly enhance the performance of a flexible structure with resonant response.
A Change of Undrain Shear Strength of Soft Ground during Consolidation Process
Authors: Park Yeong Mog , Um Ik Joo , Miura Norihiko , Baek Seung Cheol
Published: February 2014

The purpose of this study is to investigate the undrain shear strength increment during consolidation process of soft clayey soils. Thirty kinds of laboratory triaxial tests have been performed using undisturbed and remolded Ariake clay samples with different degree of consolidation and 5 kinds of confining pressure. Test results show that well known linear equation proposed by Yamanouchi et al.(1982) is overestimated the strength of undisturbed soft clay ground in the process of consolidation. A new simple and reasonable exponential equation proposed in this paper.
Study on Raman Spectra of the Polyacrylonitrile Iron Complex Nanofibers
Authors: Dong Lei , Liu Xiao Dong , Zhao Xue Ting , Dong Yong Chun , Cheng Bo Wen , Zhuang Xu Pin , Meng Dong Dong
Published: February 2014

We have measured the Raman spectra of all samples in the process of preparing polyacrylonitrile (PAN) iron complex nanofibers, and compared their Raman spectral characteristics, and thus gained a preliminary result for the PAN nanofibers structural changes in the different stages. Through its Raman spectral analysis and comparison we can find that the cyano group (C N) of modified PAN nanofibers disappeared while the Raman bands of C = N group appeared. For the pre-oxidized PAN nanofiber, because the D and G bands of the C = C vibration appeared in the Raman spectra, it is concluded that the PAN nanofiber has an apparent structural change. Finally, it is also found that that Fe3+and O2-ions have formed coordination bonds in the further prepared PAN iron (Fe3+) complex nanofibers because the characteristic Raman band of Fe = O bond appears.
Medical Image Registration Based on Simplified Multi Wavelet Transform
Authors: Yang Yun Feng , Wang Peng Xiao , Li Jia , Wang Xin Rui , Li Bo
Published: February 2014

Medical images registration technique is important to the modern clinical medicine. A registration algorithm of medical images is proposed in the paper. The algorithm consists of two part, i.e. the rough registration and the fine registration. In the rough registration procedure, the contour lines of the couple medical images are obtained at first, then they are resampled to obtain fewer contour feature points. The rough registration is accomplished based on the resampled contour lines and the Principal Axes method. In the fine registration procedure, the simplified multiwavelet transform is used to obtain the couple images multiscale information at first, then part of high-frequency coefficients are selected as registration objects. In addition, the selected high-frequency sub-bands are filtered by their mathematical expectation, and hierarchical registration strategy is used in the registration process. The experiment results show that the proposed registration algorithm is an effect method, not only the registrations precision can be held, but also the calculation cost is reduced.
Study of Transmission Characteristics of Optical Pulse in the Dispersive Fiber
Authors: Wang Wen Bin , Liu Dao Yuan , Yao Yu Qin
Published: February 2014

Chromatic dispersion and nonlinearity effect are the two important factors affecting the optical pulse which propagates in the optical fiber. The former makes the pulse broaden, the latter mainly broaden pulse spectrum. Therefore, the linear and nonlinear dispersive propagation and control of optical pulses in the fiber has always been an important research topic of concern. In this paper, Starting from the nonlinear Schrodinger equation of the optical pulse and neglecting the chromatic dispersion, under the situation of chirp and chirp-free Gaussian pulse, we analytical analyzed, calculated and simulated the frequency chirp, pulse broadening factor and waveform of the Gaussian optical pulses in dispersion fiber. And numerical studied the waveform evolution of chirp-free super-Gaussian optical pulse with distance, analyzed the influence of optical pulse propagation by dispersion in different shapes and different initial chirp.
Identification of Electrical Fire Melted Marks of Copper Wires by Electron Backscattered Diffraction (EBSD)
Authors: Sun Cheng , Ding Min Ju , Zhang Yong Feng , Tan Xun , Wang Peng , Wu Wei , Zeng Yi
Published: February 2014

A variety of electrical apparatus used in daily life can cause fires because of internal or external factors. During cause identification of an electrical fire, the first short circuit melted marks of copper wire have been considered highly important because they are direct proofs. Additionally, overloaded short circuit caused by the overload of current due to excessive electrical usage can give rise to an electrical fire. Despite extensive research on the first short circuit in fire scenes, the overloaded short circuit remains difficult to be distinguished because of the limitation of commonly used testing methods. Conventional metallographic method is intuitionistic and simple, but may not provide detailed data of crystals such as misorientation of grains. Here a new method (electron backscattered diffraction, EBSD) is applied for identification of the first and overloaded short-circuited melted marks of copper wires in electrical fire scenes. Results show obvious morphological distinctions in melted marks of copper wires between the first and overloaded short circuits. Qualitative and Quantitative differences obtained from the contrast of the above two short circuit situations may assist for cause identification of electrical fires in the future.
Detection System about Train Brake Discs' Cracks Based on Image Processing
Authors: Shi Gui Ming , Lv Meng , Liu Chang , Wei Qing Tao
Published: February 2014

The reliability of the brake disc is one of the main factors influencing running safety. This paper introduces the causes and harm of train brake disc crack, the application of digital image acquisition technology, and image processing function in MATLAB. We research a method of image preprocessing and subsequent processing by programming language, give effect drawing in each phase, and calculate the pixel size through effective extraction based on the crack characteristics. At last the condition of crack size and actual area is presented. The study can provide a reference for monitoring personnel replace the brake disc timely.
Online Identification and Suppression of Low Frequency Oscillation in Power System Based on WAMS
Authors: Qu Bo , Wu Jun Yong , Ai Hong Ke , Zhou Yan Heng
Published: February 2014

With the assistance of Wide Area Measurement System (WAMS), this paper proposes a method based on Prony algorithm to identify Low Frequency Oscillation (LFO) online and apply Power System Stabilizer (PSS) for rapid suppression. WAMS monitors the power system in real time with high precision. When LFO occurs in the system, applying Prony algorithm to analyze the power angle, it can identify all kinds of LFO modes online. For each mode, PSS would be rapidly configured and applied into the system. When some LFO modes are successfully suppressed, the corresponding PSSs exit. Taking the 10-generator-39-bus system of New England for example, it verifies the correctness and effectiveness of the proposed approach.
Design of Anti-Broadband Electromagnetic Interference Wired Phone Based on Speech Enhancement
Authors: Lin Shao Feng , Zhang Zhen Gui , Du Ting Long , Zhou Yao
Published: February 2014

In order to develop an anti-broadband electromagnetic interference wired phone, speech enhancement, electromagnetic shielding, PCB board electromagnetic compatibility and filtering are the usual measures. Realization of speech enhancement can resolve practical problems of SLT dialing error in strong electromagnetic interference, voice unclear and intermittent communication. The experiment shows that in 50m radiating field of high-power VHF radar or shortwave radio, speech intelligibility of phone designed was higher than that of general phone and had no whistling or ringing.
Multiple Objective of Train Operation Process Based on Modified Particle Swarm Optimization
Authors: Rong Hua , Yu Chao Zhang
Published: February 2014

According to the problem that train operation process costs much more energy in rail transit. Multi-objective optimization model is formulated on multiple objective optimization methods. The model aims to energy-efficient, punctuality and stopping at adequate position. In order to solve the basic PSO relapsing into local extremum and slow convergence in the late evolutionary, a method is put forward to improve the acceleration coefficient of PSO. Experiments result shows that the modified algorithm can get a more accurate global optimal value.
The Decision Method of Electromagnetic Compatibility between Radars Based on the Theory of Signal Detection
Authors: Wang Chun Yu , Qi Xing Long , Chang Shuo , Ren Lin
Published: February 2014

In order to determine the electromagnetic compatibility between radars better, this paper deduced the distribution character of signal+ noise+ jamming and the signal passing narrowband linear filtering system based on the signal detection theory, and established the quantitative relationship of the radar detection probability and jamming noise ratio on this basis, the detection probability was used to judge the electromagnetic compatibility between radars directly. The simulation experimental results showed that the detection probability was reduced with the increase of interference intensity, when the interference power exceeded the threshold of 1.7 dB, radar detection probability dropped to 50%.
Research on the Existence Detection of DSSS Signal Based on Auto-Correlation
Authors: Shi Yan Li , Du Chun Mei , Ren Lin , Yu Hai Xia
Published: February 2014

In practical applications, the DSSS signal has very low power spectral density, and its application range is very wide, so in the non cooperative communication, if on the premise that the spread spectrum sequence is unaware, how to detect and estimate the existence of DSSS signal is very important, this has very strong application background. This paper introduces the time domain correlation detection method of DSSS signal, through the simulation can validate that this way can detect the existence of signal; it lays the theoretical foundation for practical application.
Study on Radar Weak Signal Detection Method Based on Wavelet
Authors: Ren Lin , Shi Yan Li , Tian Run Lan , Wang Chun Yu
Published: February 2014

In this paper, a multi-resolution wavelet threshold denoising method which can achieve radar weak single detection is proposed. The method and the way of the radar weak signal detection which based on the Wavelets transform are described. The simulation to real radar signal is verified by MATLAB. The good results are obtained that the proposed method effectively improves the signal noise rate of the weak signal detection.
Effect of Fluctuation of Wind Power Output on Power System Risk
Authors: Liu Jian , Song Ying Wei , Liu Yan , Jiang Hui Lan , Zheng Shuang Qi
Published: February 2014

With expansion of the scale of wind power used in grid, its impact on the power grid has become more and more apparent. Because of its characteristics of intermittency and randomness, it is necessary to study the effect of wind power fluctuation on power system risk. The large scale wind power farm is connected to the power grid, the influence of its output fluctuation on static security of power grids is studied in this paper, and corresponding evaluation risk index of the power grid security is built. A new type of power system analysis software (PSAT) is used for the simulation analysis, and the results show that output fluctuation of wind power has great influence on low voltage and overload risk of power system.
A Decision Support Model for Ecological Restoration of Coastal Mud Flat
Authors: Sun Ling , Zhu Ze Sheng
Published: February 2014

The aim of this study was to investigate the use of two linear programming models to optimize protection, development, and ecological restoration of coastal mud flat, in particular maximizing ecosystem service values and minimizing ecological restoration cost. Such two linear programming models for Dafeng City, Jiangsu Province, China were constructed to represent all ecosystem and ecological restoration services in a decision support model and given the optimal protection, development, and ecological restoration decision for the coastal mud flat. This indicates that there is a possibility of obtaining a decision support system from the linear programming models and suggests that it is possible to improve decisions of restoration programs of the coastal mud flat by selecting areas of protection and development in which multiple service benefits can be maximized and ecological restoration cost can be minimized simultaneously.
Design on CPW-Fed Open-Slot Antennas for 2.4/5.2/5.8-GHz Wireless Applications
Authors: Gao Xiang Jun , Zhu Li , Zheng Long , Wang Guang Ming
Published: February 2014

In this article, a novel folded open-slot antenna fed by coplanar waveguide (CPW) for WLAN applications is designed. Through optimizing the dimensions of loaded rectangle slots, the multi operating bands are achieved. From simulated results, the antenna has a small overall size of 28mm30mm, operate over two frequency bands of 2.40GHz-2.49GHz and 5.0GHz-6.0GHz when return loss is less than-10dB. The proposed antenna is manufactured, the measured characteristics are in good agreement with the simulated results. Such antenna is suitable for WLAN 2.4/5.2/5.8GHz applications.
The Receiving Method Based on Signal Separation by Spread Spectrum in the Cooperative System with Step Direct Channel
Authors: Peng Zhang You , Liu Xu , Zhong Xue Xia , Wang Jian , Liu Yang
Published: February 2014

In high-speed mobile Orthogonal Frequency Division Multiplexing (OFDM) cooperative system, direct channel signal presents a step change due to carriage loss, which interferes with signal reception. In the proposed system, spread spectrum is adopted at relay to separate the receiving mixed signals. Subsequently, the fading coefficient threshold of direct channel is obtained by simulating outage probability of direct channel. Finally, separated direct channel signal is selectively received based on the ratio relationship between its current fading coefficient and the obtained threshold. The proposed receiving strategy reduces Bit Error Rate compared with other receiving methods. Moreover, throughput of the proposed system increases when the fading coefficient is higher than threshold.