bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Option Pricing Model under Uncertainty
Authors: Zhang Kun Long , Song Li Xia
Published: February 2014

In the real financial market, there are always other uncertain phenomena, such as fuzzy phenomenon, random phenomenon. Along with empirical study increasing investigator discovered that this kind of uncertainty affects policy-maker's behavior choice and the asset price change. Researcher pay more and more attention to the problems on the option pricing under in uncertain environments, Therefore, the paper shows that options can be valued successfully in uncertain environments, some option pricing models are established, the corresponding algorithm is designed to solve these models.
Removing Cloud of Grey Remote Sensing Image Based on Network Communication
Authors: Yue Min Min
Published: February 2014

Remote sensing technology has rapid development in the past half one century, it is widely used in various fields and society. But the clouds have affected the quality of remote sensing data, how to effectively use the modern computer science and technology to remove the cloud is a hot issue in the field. From the theory of cloud formation in the remote sensing image, we analyze the formation mechanism, and based on this we do two layers decomposition and reconstruct the structure according to wavelet transform in network communication, and establish the image degradation model. Combining Fourier transformation, we set up the removing cloud fusion model of remote sensing image. Through the simulation experiment, the effect is significant. To a certain extent, it provides technical support for theory study and practice operation.
Feature Extraction and Recognition Based on the Biological Analysis
Authors: Zhao Wen Cang , Wang Fan
Published: February 2014

In this paper the extracted features including rectangularity,elongation, invariant moments and the four ratios of the stored product pests, which are the ratio of antennae area to torso area, the ratio of antennae perimeter to torso perimeter,the ratio of head and chest area to abdominal area, the ratio of head and chest perimeter to abdominal perimeter. Then these 13 characteristic parameters are input to BP neural network and SVM for recognition and classification. Form the results we can see that the 13 features in this paper can be well reflected the stable characteristic information of the stored product pests.
Research of Energy Constitution for Ocean-Going Fishing Vessels towards Low Carbon
Authors: Ren Li , Diao You Ming , Wang Ze
Published: February 2014

With the growing aggravation of energy shortage and global warming, the low-carbon and energy-saving of ship have become the most important subject. In this paper, based on the traditional diesel power plant, introducing the diesel/ new energy hybrid power plant, the energy constitution for ocean-going fishing vessels is analyzed towards low-carbon. By investigating the power requirements of main propulsion, sub-engine power generation and auxiliary boiler system for the ocean-going fishing vessels during operations process, the energy consumption characteristic of it is researched. Based on this, combining the assessment reports of intergovernmental panel on climate change (IPCC) and global warming potential (GWP), considering carbon emission of production for new energy power plant, the carbon-emissions of ocean-going fishing vessels with diesel power plant and diesel/new energy hybrid power plant are all quantified. The necessity of new energy application in fishing vessels is verified by numerical example.
Optimal Placement and Sizing of Distributed Generation in Smart Distribution System
Authors: Zhang Shuang , Liu Yong Mei , Gao Feng , Tian Bei
Published: February 2014

This paper solves the distributed generation (DG) planning problem. Firstly, multiple-objective functions have been formed with the consideration of minimum line loss, minimum voltage deviation and maximal voltage stability margin. Secondly, the proposed improved NSGA-II algorithm has been described in detail to solve the multi-objective planning problem. An improved Non-dominated Sorting Genetic Algorithm II has been proposed for optimal planning of multiple DG units in this paper. Experiment has been made on the IEEE 33-bus test case with the consideration of multiple DG units. The computational result and comparison indicate the proposed algorithm for optimal placement and sizing of DG in distribution system is effective.
Design and Implementation of Remote Intelligent Control System Based on Cortex-M3
Authors: Yang Jun , Li Wen Long , Zhu Ruo Xin , Cai Guang Hui
Published: February 2014

With the rapid development of the Internet, the remote control technology was demanded more. In this paper, we designed a simple and practical remote intelligent control system, using CGI technology to complete the construction of Web servers and embedding uCOSII as the real-time operating system in Cortex-M3 core processor. By porting TCP/IP protocol stack, users could login in the server to access and control the system via the Internet. Using NRF2401 wireless technology to build a terminal network, the terminal carried out intelligent control with field data collected by sensors. Meanwhile, users could make monitor and control on a control terminal via a Web browser on a PC or mobile. The remote intelligent control system was stable, real-time, low cost, fit for the smart home, industrial remote monitor and so on, so it would have a better application prospects.
Planar Magnetic Motor in the Applications of New Energy Electric Vehicles
Authors: He Yi Hong , Yu Shui Yong , Zhang Li Tao
Published: February 2014

New energy vehicle development has been incorporated into China's twelfth five year development plan, motor and controller are core components in the new energy vehicle, high efficiency, light weight, low cost of the motor and the controller are the R & D personnel goal. In recent years, small volume, light weight, large starting torque of plane magnetic field electric machine are suitable for electric cars. This paper introduces the structure principle of plane magnetic field motor and its control, the prototype was done based on three motor drive system by testing each experiment and pass the test of each motor mounted to the vehicle. The motor speed, torque and vehicle speed, mileage and other data obtained in plane magnetic field motor in electric vehicle has great advantages in application of conclusion.
Average Population Density Estimation in Rail Transit Stations Based on Video Statistical Analysis
Authors: Zheng Bao Guo , Xu Bing , Shi Zhong Jin , Hui Yi Huan
Published: February 2014

This article describes the use of the average population density estimation methods based on video statistical analysis, and mainly discussed the research and application of the air conditioning energy-efficient system in the subway. The distributed intelligent control system in the subway station platform captured video images by more than one camera sensors, according to the computer image processing methods, for example it have the unique advantages for the fuzzy neural network to model the human nervous system in fuzzy information processing. This article used the improved Meanshift algorithm based on pixel energy to capture the moving target in the video. This method can legitimately divide the crowd by achieving the image intelligent analysis data, and whats more, it can help to get the estimation of population density.
Transmission of Electromagnetic Waves in Softmaterial Waveguides
Authors: Li Gang , Pang Tian Wen , Sun Wei Qiang , Luo Long , Pang Jie Feng , Xu Sheng Yong
Published: February 2014

We report here experimental data for transmission of electromagnetic waves through a variety of softmaterial structures made of plastic tubes and ionic solutions, as compared to that in the free space. The results firmly support the theory on softmaterial waveguides in the environment of ionic solutions. This is a solid step towards a better understanding of the underlying physics for the electrical communication in biosystems through axons and membranes. It also offers valuable insight for further experiments with artificial materials at the nanoscale, and experiments in live animals.
Study on Traffic Control of Single Intersection Based on Rough Set
Authors: Cheng Xiang Jun
Published: February 2014

On the basis of actuated control method, the number of car arrived of the current phase and the number of car arrived of the next phase are considered altogether. It is decided to prolong the green time of the current phase according to the relationship of the number of cars arrived of the current phase and the next phase. The experience and principle of traffic control are described as knowledge here. The entire condition of intersection is consisted from classified arrived car number. The knowledge face to the controlling of isolate intersection is applied in the space of intersection state. Then a rough set is formed. Finally, signal control rule set face to every situation is made after some work was done to make one condition corresponding to one action of signal control. The results of simulation indicates that the total stop delay of cars of this signal control method based on rough set reduces 23.1% averagely than the fixed-time approach and reduces 9.5% averagely than the actuated approach in the same condition.
A New Variable Step Size LMS Adaptive Filtering Algorithm and its Simulations
Authors: Wu Xue Li , Tan Zi Zhong , Gao Liang
Published: February 2014

. Aiming at the disadvantage of the variable step size LMS adaptive filtering algorithms' convergence speed contradicting its steady-state error, a novel non-liner functional relationship between μ (n) and error signal e (n) was established. On the basis of the functional relationship, a new algorithm of variable step size LMS adaptive filtering was presented. The step size factor of the new algorithm is adjusted by the absolute value of the product of the current and former errors. It also uses the absolute estimation error compensation terms disturbance to speed up the convergence of adaptive filter tap weight vector. At the same time, the algorithm considers the relationship between step length of the last iteration and the former M error signal. As a result the algorithm has higher convergence characteristic and small steady state error. The theoretical analysis and simulation results show that the new algorithm has faster convergence speed, lower steady state error and better performance of noise suppression, also show the overall performance of this algorithm exceeds some others condition.
Real-Time Image Distortion Correction System Based on Improved Bilinear Interpolation Algorithm
Authors: Guo Wei , Zhang Chuan , Zheng Yong Rui
Published: February 2014

This paper brings about an image distortion correction system based on FPGA with low latency and high quality. In line with image format characteristics, the system adopted the buffering mechanism that storing data in odd and even line/column zones respectively to minimize memory occupancy. Furthermore, an improved bilinear interpolation algorithm is put forward in order to improve edge definition. The experiment results demonstrated that the hardware system run steadily under the condition of high resolution and frequency, in addition, the edge effect improved greatly after image processing.
A New Error-Fitting Inversion Method for 2-D NMR Spectrum
Authors: Zhou Xiao Long , Nie Sheng Dong
Published: February 2014

Two-dimensional (2-D) inversion algorithms with Nuclear Magnetic Resonance had been intensively studied all over the world. To improve the existing method, a new Error-Fitting inversion method was proposed. The proposal algorithm consists of two steps: firstly, error extraction and estimation is implemented; the next step is to fit the measured data to such a state that the fitting residual and the estimated noise are in a comparable level. This method is applied to simulation and experiments. The results have shown great robustness and accuracy of the algorithm. In conclusion, the proposed Error-Fitting inversion method can meet different application requirements.
Analysis and Evaluation on NBTI-Induced Circuit Aging
Authors: Jin Song , Huang Yi Ran
Published: February 2014

Aging effects degrade circuit performance with time, inducing reliability problem. Accurate prediction of circuit aging can help designer determine the reasonable design margin, avoiding the over-design of the circuit. Based on the physical understanding of aging mechanism, an analysis framework is proposed to predict NBTI-induced circuit aging. The analysis framework starts at the worst case prediction, which assumes the extremely operational conditions. Then, the impacts of different workloads and logic topology of the circuit on the aging-induced degradation are incorporated into the analysis framework to make the predicted result be closer to the practical scenario. Experimental results demonstrate that the effectiveness of the proposed analysis framework.
An SSVEP-Based BCI System for SMS in a Mobile Phone
Authors: Lin Jzau Sheng , Wang Mei , Lia Pei Yu , Li Ze Jin
Published: February 2014

In this paper, the purpose is to develop a Short Message Service (SMS) system that can aid the ALS patients to control a mobile phone to send a message by using of the steady state visually evoked potentials (SSVEP) brain computer interface (BCI) to a person who can help him/her. The EEG signals may be detected by electrodes and signal extracting chip. Then these signal can be transmitted to the mobile platforms by using of Bluetooth interface. Finally, the message and phone number can be selected in accordance with the components in frequency domain transferred from time domain. The experimental results had shown that the proposed system can easily send a message from a mobile phone to another.
A Method for Components' Damage Detection Based on Optoelectronics Imaging Technology
Authors: Wang Jun
Published: February 2014

This paper puts forward a method for components' damage detection based on optoelectronics imaging technology. According to the collection principle of optoelectronics imaging system, using pixel gray scale difference approach, the method extracts pixel characteristics of the optoelectronics image, which is taken as data foundation of following damage detection. Edge pixel positioning method is adopted to calculate spatial location of optoelectronics data of the components' damaged area edge, thus enabling components damage detection. Experimental results show that the method can improve the accuracy of components optoelectronics damage detection and meets the needs of quality inspection in component production.
Propagation and Responses of EMP on Transmission-Line Networks
Authors: Zhou Xing , Fan Li Si , Yang Qing Xi , Yang Zhe
Published: February 2014

This paper discusses the use of Baum-Liu-Tesche (BLT) equation for analyzing and calculating the propagation and load responses of transmission-line networks in frequency domain and time domain. The derivation and each parameters of BLT equation is introduced, and using BLT equation, two examples of specific coaxial cable networks are established, and the propagation and responses of networks are analyzed and calculated. The responses of networks terminals are measurement, and calculation results and measurement results are compared. The results show the excellent agreement between measurement and calculation results. The study results of this paper can be used for cable networks design and protection against EMP.
Point Clouds Registration by Using Depth Images
Authors: Qiao Wen Bao , Guo Ming , Liu Jun Jie
Published: February 2014

In this paper, we propose an efficient way to produce an initial transposed matrix for two point clouds, which can effectively avoid the drawback of local optimism caused by using standard Iterative Closest Points (ICP)[ algorithm when matching two point clouds. In our approach, the correspondences used to calculate the transposed matrix are confirmed before the point cloud forms. We use the depth images which have been carefully target-segmented to find the boundaries of the shapes that reflect different views of the same target object. Then each contour is affected by curvature scale space (CSS)[ method to find a sequence of characteristic points. After that, our method is applied on these characteristic points to find the most matching pairs of points. Finally, we convert the matched characteristic points to 3D points, and the correspondences are there being confirmed. We can use them to compute an initial transposed matrix to tell the computer which part of the first point cloud should be matched to the second. In this way, we put the two point clouds in a correct initial location, so that the local optimism of ICP and its variations can be excluded.
The Development of a Drop Test Device for the Performance Test of the Landing Gear of an Unmanned Aircraft
Authors: Oh Sung Hoon
Published: February 2014

An unmanned aircraft as a growth engine recently emerging in the airline industry is expanding its range from conventional military purposes into the development direction for civilian use. As such, necessary skills, components and equipment is being developed at a rapid pace and the testing equipment and techniques for checking the reliability and durability of the developed technology is also needed. But so far, performance testing standards for the newly developed product is not clear and accordingly lacks the testing equipment and techniques. In the case of landing gear, it plays an important role for the safety of the aircraft during the take-off and landing and such importance is becoming clear for an unmanned aircraft as well. However, the research and development of the drop test device for testing the performance of the landing gear is yet insufficient. As such, by developing an improved version of the drop test device from its predecessor to inspect the safety and durability of the landing gear, we hope to increase the safety and reliability of the landing gear as well as having a goal of developing a checking device for the landing gear to be developed in the future.
A Derivation of Ion Energy Distribution Function for Dual Frequencies Capacitively Coupled Plasma
Authors: Zhou Zhu Wen , Chen De Liang , Kong Bo , Wang Yuan Sheng
Published: February 2014

A model of ion energy distribution of dual frequencies capacitively coupled plasma (CCP) has been investigated, it is important to analyze these phenomenon and mechanism in order to control the microelectronic processes of integrated circuit and develop the base theories of plasma physics. We focused on the function of the ion energy distributions under high and low frequencies (dual frequencies) drive in capacitive discharges, we derived a theory model of the dual frequencies driven IEDs from analyzing theories. The model can analyze and predict the IEDs under different high and low frequencies driven, which results in accurate multi-peaks IEDs and energy width for the given control parameters, particle-in-cell (PIC) simulations are used to verify this model.
Measurement System of Decay Time for Liquid Scintillator
Authors: He Li Ping , Fang Yu , Chen Shu Fan , Luo Xuan , Wei Zhi Jun , Liu Dong Xiao , Zhang Lin , Li Xin
Published: February 2014

The fluorescence lifetime of the molecular excited states in the liquid scintillator determines the pulse shape of the events in a detector. The fluorescence decay times of the mixtures could be measured by UV light excitation, or via ionizing particles. Both of the setups are based on the time-correlated single photon technique. In this paper we described a setup in detail for testing the fluorescence lifetime under ionizing particle to render the relatively weak neutron or ion signals detectable. In addition, we presented the time resolution of system for the setup.
A Variable Sampling Plan Based on CL for Exponentially Distributed Products
Authors: Yan Ai Jun , Liu San Yang , Dong Xiao Juan
Published: February 2014

This paper attempts to develop a variable sampling plan based on the lifetime performance index CL for exponentially distributed products.Practitioners can use the proposed sampling plan to determine the required sample size and the corresponding critical acceptance value,to make reliable decisions in product acceptance.We also tabulate the required sample size and the corresponding critical acceptance value for various producers risk and the consumers risk.
Research in Optical Image Differential Based on Digital Filter
Authors: Dong Huan
Published: February 2014

In this paper, we create the optical differential filter displayed on a digital micromirror device which achieving differential operation of image is proposed. We produced the digital cosine composite grating through the computer which replaced the traditional holographic composite grating filter, and transmitted the image of composite grating to the DMD which connected to the computer. This method can produce optical filters quickly, avoiding developing, fusing processing, and can according to the specific requirements of the image to adjust the filter quickly. The method not only can save time, but also can improve the processing accuracy greatly.
Numerical Simulation and Experimental Study of Inner Flow Field in Marine Centrifugal Pump
Authors: Chen Xin Xiang , Wang Guo You , Wang Kai , Tan Ming Gao , Dong Liang
Published: February 2014

It was simulated the flow fields of the CLH-type marine centrifugal pump based on average N-S equations and standard k-ε turbulent model, using the ANSYS CFX12.1 code. With the calculation results, the velocity distribution of the flow field in the centrifugal pump is analyzed under different working conditions. The analogue results, which indicate the relationship between the total head, efficiency, shaft power and flow rate, are compared with performance experimental ones, and it shows that the simulation data coincides with experimental ones in allowable acceptance, which meet the requirements of practical application. Furthermore, in order to analyze the inner flow field distribution in the centrifugal pump in detail, and validate the simulation results, the inner flow field is tested by particle image velocimetry (PIV) measurement.
The Effect of Dy-Additive on Phase Transformation and Magnetic Properties of Fe-Pt Alloy Films
Authors: Cheng Gang , Sun Yi Zhe , Pan Kuang , Li Lin , Ma Lei , Gu Zheng Fei
Published: February 2014

A series of Fe-Pt based alloy films were deposited on glass substrates by DC magnetron sputtering. It is found that the Fe3Pt and FePt3 phases appear in Dy-addition films at first and then a composition reaction Fe3Pt + FePt3 FePt occurs at 500°C as annealing time increase. It suggested that Dy element can restrain the fct phase forming but help to form Fe3Pt and FePt3 phases. Coercivity and remanence ratio of DyxFe50-xPt50 alloy films annealed at 500°C for 200 h achieve the maximum 11kOe and 0.89 as x =1.5, respectively.
Remote Management Software Design for Urban Road Traffic Equipment Based on Android Mobile Terminal
Authors: Zhang Jin Jin , Zhang Jie , Liu Bao Xun , Li Jian Min
Published: February 2014

Beginning with the signal remote monitoring system's function structure, development process function design and so on , this paper described the remote management software design and implementation scheme of the road traffic equipment based on the Android mobile terminal. This software can realize the remote control of the traffic signal lights, condition monitoring and signal equipment management and fault alarm to remind function, reduce the maintenance management difficulty of traffic signal control equipment, and have a good application prospect.
Bi-Level Programming Based Layout Optimization of Water-Land Intermodal Transport Hub
Authors: Wu Zhi Hua
Published: February 2014

Against the problem of water-land intermodal transport logistics in area of Yangtze River, based on the method of bi-level programming, a layout optimization model of the area under the condition of flow of goods in dual direction is built up. The model involves optimized selection of ports as the intermodal transport hubs and determination of throughout of ports after construction from the point view of logistic planning department and optimized selection of water-land intermodal transport routes and determination of goods volume among the routes. The example reveals that the problem of layout optimization in Yangtze River basin under the condition of dual-direction goods flow can be modeled by bi-level programming, and the model can be solved by two kinds of algorithms including two-phrase one and adding objective functions.
Google Maps-Based Geospatial Application Framework with Custom Layers Management
Authors: Titanto Mardityo Tulus , Dirgahayu Teduh
Published: February 2014

Web 2.0 technologies have offered interactive map services on the Internet. Google Maps is a map service that makes available its API (application programming interface) for developing Web-based geospatial applications. In such applications, layers are used to organise spatial data. Using layers, users can abstract from data that are irrelevant to their interest. However, Google Maps API has no direct support to the development of custom layers management. Developers have to design and implement such support in every application they develop. It makes the development processes less efficient and error prone. This paper proposes a software framework to facilitate the development of geospatial applications with custom layers based on Google Maps. Using this framework, developers can produce higher quality applications in shorter time.
Jamming-Aware Randomized Spectrum Sharing in Cognitive Radio Communication Networks
Authors: Lin Ying
Published: February 2014

We investigatein this paper spectrum sharing techniques for multiple unlicensed userstoshareanavailablesparechannelincognitiveradionetworks. Inparticular,consideringasingle-slotted aloha channel access model, we develop an effcient transmission framework that enablesthe detection of jamming attacks. The proposed transmission strategy adopts a randomized PN-codeassignmentforeach transmissionslot. Furthermore,giventhePN-basedtransmissionframe-work, a two-step jamming detection algorithm is also devised by combining an energy detectorand a correlation detector. Theoretical analysis of the detection performance is presented and theimpactofsystemparameters is demonstratedthroughnumericalexamples.
Research on Network Congestion Control Based on Quantum Genetic Algorithm
Authors: Lei Gang , Yin Xia , Shi Wei
Published: February 2014

An optimization mathematical model of QoS routing, which with the objectives of network congestion control, is presented in this paper. Combining quantum computation and genetic algorithm, an algorithm for network congestion control based on quantum genetic algorithm (QGA) is proposed. Quantum bit and quantum rotation gate operation are used to update the chromosomes. The simulation results manifest that this algorithm is of fast speed and high efficiency and easily escape from local optimal solution. It can improve network performance and arrive at the purpose of congestion control.
Realization of Primitive Trace in TD-LTE RF Conformance Testing Instrument
Authors: Guo Li Qiang , Li Xiao Wen
Published: February 2014

In order to satisfy the requirement of reliability in the TD-LTE RF Conformance Testing Instrument, a method to achieve the trace of primitive of TD-LTE based on embedded system is imposed. According to the feature of the long term evolution (LTE) system, it highlights the details of primitive tracing through DMA and UART. The primitive is strongly real-time to achieve QoS in LTE. Verified multiple times this design achieves the primitive trace in LTE as well as meets the requirement of hardware platform in TD-LTE RF Conformance Testing Instrument.
Performance Analysis of One AP with 802.11g WLAN Network
Authors: Li Ming Ming , Yang Wen Han
Published: February 2014

This paper mainly presents Access Point s (APs) performance according to 802.11g standard. Our study illustrates the performance of one AP, including its coverage performance, load-carrying properties and fairness. Performance analyses are evaluated by simulation for a dense wireless network. Our contribution is that the simulation and test results can be the basis offered to network operators.
On the Potential of Web Services in Network Management
Authors: Bai Yu
Published: February 2014

These days, Web services, which are based on XML and consist of several XML-related technologies, have been emerging as a promising technology, and it seems that Web services may be used in the field of network management. In this paper, we examine Web services as a XML-based approach to network management. Since Web services are a Service-Oriented Architecture (SOA) more than just a set of technologies, it could be used in XML-based network management, not only at the technology level, but also at the architecture level, which has many remarkable advantages and may be more effective in network management along with the concepts of Peer-to-Peer and Point-to-Point, in order to make a better use of its capability. Correspondingly, two models are presented to further demonstrate the potential of Web services in XML-based network management. Some implementation issues for the model at the architecture level are also demonstrated in this paper.
An Improved KNN Classification Method Based on Variable Precision Rough Set
Authors: Wang Xun , Liu Li Sha , Wang Qing Hu , Qi Jian Hong , Jiang Ming Yang , Pei Zhi Li
Published: February 2014

KNN classifier is a simple, non-parametric, high efficiency algorithm. But it has the defect that the classification efficiency will increase as the enlargement of data scale. This paper put forward a new KNN classification method based on rough set on the research of algorithms presented by Yu Ying and Heping Gou. The innovation of this algorithm is that the kernel, negative domain and boundary region of variable precision rough set are used to be the indexes of measuring the intra-class, extra-class and the class boundary of training sample set. The samples of intra-class, extra-class and the class boundary that are to be classed have differential treatment when judging the category. In this way, the scale of training sample set is effectively reduced and the efficiency and precision of classification are improved. At last, the category function is improved to reflect the category of samples to be classed. The experimental results show that the method can obviously improve the classification efficiency and accuracy.
Multiple-Replica Public Auditing Protocol for Cloud Storage
Authors: Liu Hong Wei , Wang Shu Lan , Zhang Peng
Published: February 2014

Cloud storage can provide a flexible on-demand data storage service to users anywhere and anytime. However, users data is owned by cloud service provider physically, and the physical boundary between two users data is fuzzy. Moreover, cloud storage provider stores multiple replicas of data in order to increase robustness of users data. The user is charged by the amount of replicas. However, the evidence cloud storage provider actually spends more storage space is scarce. In this environment, a method to ensure multi-replica integrity must be provided. In order to avoid retrieving enormous storage data and users themselves checking, a multi-replica public auditing protocol was proposed based on the BLS short signature scheme and the homomorphic hash function. Based on the computational Diffie-Hellman assumption, the presented protocol is secure against the lost attack and tamper attack from cloud service provider. As the independence among blocks and block signatures, this protocol supports block-level dynamic update, including insertion, modification and deletion. So, the protocol is secure and efficient, and supports for multi-replica, public verification, dynamic update and privacy preserving.
Modification of a Hybrid City Bus Powertrain in the Aspect of Lower Fuel Consumption and Exhaust Emissions
Authors: Bajerlein Maciej , Rymaniak Lukasz , Swiatek Piotr , Ziolkowski Andrzej , Daszkiewicz Pawel , Dobrzynski Michal
Published: February 2014

In this paper the authors present the methodology and results of exhaust emissions and energy consumption tests of an 18-meter city bus fitted with a serial hybrid drive. During the tests, parameters of the engine operation, capacitor charging level and exhaust emissions were recorded. The tests were performed under actual conditions of the bus operation in city traffic on a regular bus route. The testing cycles were conducted twice on the same vehicle. The first cycle was performed on the bus with the original configuration and the second one - on the optimized engine and drivetrain. The paper presents the results of the conducted investigations and a comparison that tells us whether the optimization changes have a positive influence on the vehicle reducing its energy consumption and exhaust emissions.
Research on Experimental Method for the Working Force between Packer Rubber and Casing Tube
Authors: Wang Zun Ce , Lv Feng Xia , Cao Meng Yu , Wen Hou Zhen , Xu Yan
Published: February 2014

On application of BDI STS-WIFI testing system and Dasylab software, the testing process for strain of the casing tube with the packer rubber being seated is carried out. From the process the different friction force and normal pressure of specified seating pressure are achieved, by which the empirical formula is matched. Setting the experimental result as the boundary condition, the calculation result of the practical location of the five-stage packer on basis of oil and gas wells rod string mechanics is obtained, the maximum deviation of which is 0.1m compared with the magnetic location data. The research process on the experiment method proves its accuracy in laboratory while promoting the precision of the block location of the multistage packer in practical well casing tube.
Studying the Effects of Different Materials and Thickness of Titanium Layer to Implant Based on the Finite Element Method
Authors: Ma Yan Qing , Chen Ling , Wang Shao Kai , Niu Xing Hua
Published: February 2014

Implant young's modulus has a decisive role on bone interface stress distribution and transmission. In this paper, using UG software, change the traditional titanium implants into a new implant by the different thickness of the titanium layer wrapped in a variety of materials, and using ansys workbench changes thickness and Young's modulus of the core material, analysis of various the case of force and deformation of the implant, looking for a good biomechanics is both compatible with good mechanical properties and implant materials. Through analysis, the ratio of all the results obtained: titanium layer thickness and Young's modulus of the core material has an impact on force and deformation.
A Comprehensive Quantitative Evaluation Method of Emulsifying Properties
Authors: Zhang Yi , Liu Hua Long , Zhu You Yi , Yuan Hong , Wu Jie
Published: February 2014

In order to meet the demand of a quantitative evaluation the emulsifying properties of crude oil for the chemical flooding, based on the comparative analysis of relevant methods and standards, through a large number of experimental studies, a quantitative test methods and emulsifying power of the emulsion stability were established, the concept of the emulsion integrated index was definition, a quantitative evaluation method and the evaluation of the overall performance of the crude oil emulsion grade were put forward in this paper. The method takes into account the emulsification speed and persistence of the emulsifier. The method has been included in China's petroleum industry standard, and gives a technological support for the application in the comprehensive evaluation of the displacing agent in the petroleum industry.
Monitoring Nonlinear Batch Process Using Statis-Based Method
Authors: Filho D. Marcondes , Fogliatto F.S. , de Oliveira L.P.L.
Published: February 2014

Industrial batch processing is widely used in a number of areas of industrial production. Data arising from such processes may present special characteristics; there is therefore a growing interest in the development of customized multivariate control charts for their monitoring. Here we investigate a recent approach that uses control charts based on the Statis method. Statis is an exploratory technique for measuring similarities between data matrices. However, the technique only assesses similarities in a linear context, i.e. investigating structures of linear correlation in the data. In this paper we propose control charts based on the Statis method in conjunction with a kernel for monitoring processes in the presence of nonlinearities. Through kernels we define nonlinear functions of data giving better representation of the structure to be characterized by the Statis method. The new approach is illustrated using simulated data.
Experimental Verification of Fatigue Resistance of Steel Expansion Anchors to Concrete Loaded by Cyclic Tensile Force with Regard to Particular Failure Modes
Authors: Karmazínová Marcela
Published: February 2014

The paper deals with some questions of the actual behaviour of post-installed anchoring elements and it is oriented to the problems of the behaviour of steel expansion anchors to concrete under repeated tension loading, especially. In this connection, the paper is mainly directed towards the investigation of the strain and failure mechanism from the viewpoint of the possibilities of the resistance determination using experimental results. Specifically, this paper presents some brief information about the results of loading tests of expansion anchors loaded by the actions of cyclic tensile force, also in relation to the similar results referenced in literature.
Microdamage in Composite Laminates: Experiments and Observation
Authors: Varna Janis , Asp Leif
Published: February 2014

The first mode of damage in fiber reinforced composite laminates is usually intralaminar cracking in layers with off-axis orientation regarding the main loading direction. This papers analyzes the most typical methods used for the characterization of the damage state: edge replicas, optical microscopy, x-ray images, acoustic emission, speckle interferometry and Raman spectroscopy
"E" Elastic Property of Metallic Materials Correlation between Standard and Penetration Tests
Authors: Marini Stefano , di Francesco Giulio
Published: February 2014

Through a series of standard tests conducted on homogeneous metallic materials (carbon steel, stainless steel and non ferrous metal alloys) we have obtained the corresponding values of the elastic module. Non-destructive local penetration tests in the elastic field are carried out on materials identical to each of those indicated above. For each of the aforementioned materials the results obtained by the two tests described above are correlated. Lastly, we have calibrated the measuring chain created especially for the micropenetration tests, and then validated the measurement procedure.
A Novel Response Time-Driven Replica Selection Approach for Cloud Computing
Authors: Yang Zhong Xue , Qin Xiao Lin , Li Wen Rui , Yang Ying Jie
Published: February 2014

Data replication techniques are used in cloud computing to reduce access latency, network bandwidth and enhance data availability, system reliability. Replica selection involves selecting the best replica location to access the data for job execution in cloud computing. In order to select the best replica, a novel response time-driven replica selection approach based on Dirichlet probability distribution (DPRS) is proposed in this paper. Dirichlet PDF is the conjugate prior of categorical distribution to predict the posteriori value. The response time is calculated based on the network parameters such as network bandwidth, file size and access latency. The best replica can be predicted in corresponding with the historical log file by using Dirichlet PDF. Simulation results show that DPRS method conducts high performance in lower mean response time, while compared with No replica, LRU and LFU strategies.
The Design of PMP-AODV Routing Protocol in Wireless Mesh Network
Authors: Dai Jian Mei , Geng Hua Fang , Sheng Yi Jun , Dai Zhi Guang
Published: February 2014

PMP-AODV routing protocol which introduces priority setting, multi-point relay and path stability is proposed. The algorithm message format is discussed, the MPR selection algorithm is elaborated, the measurement of stability of path is designed, and the working flow of PMP-AODV is analyzed. The simulation result shows that the PMP-AODV protocol is less packet loss rate and lower end-to-end delay than original AODV protocol under the large wireless Mesh network.
Research on Improved Floyd Routing Algorithm in Opportunistic Networks
Authors: Lin Sui , Li Yuang , Chen Pei Shan
Published: February 2014

According to the traditional shortest path algorithm is not suitable for the routing choice in community model of Opportunistic Networks, we propose an improved Floyd shortest path algorithm. This improved algorithm not only considers the space factor between the nodes in opportunistic networks, but also takes into account the time factor of the wireless links.The simulation results show that, compared with the existing FC(First Contact), DD(Direct Delivery) routing algorithm, this improved algorithm can more effectively get the shortest delay paths in opportunistic networks.
The Research of Distributed Bitmap Index
Authors: Liu Yu Ting , Yang Hua Min
Published: February 2014

With the explosive growth of data, the performance of querying the huge amounts of data is more and more important.Simply Method of improving the performance of stand-alone already can't meet the demand.We need to handle huge amounts of data with distributed technology.However, traditional ways are just outrageous abuse of distributed resources, there are a lot of methods to improve efficiency and throughput.In terms of saving resources effectively, index is an indispensable tool.This article embarks from the traditional indexing mechanism, based on the advantage of the traditional methods in combination with the advantages of bitmap index, put forward a kind of extended local index mechanism,which is effective in reducing the traditional local indexes for distributed resources unnecessary overhead.At the same time it also improve the query efficiency. Finally, the test results show that the improved algorithm is efficient.
Time Synchronization Method for Parallel Traffic Simulation Framework
Authors: Trinh Quang Khai , Le Minh Tuan
Published: February 2014

This paper presents an overview of a traffic simulation system model for parallel processing in multi-computers on a local network. It serves as the basis for the development of a micro-simulation system for a traffic network in a large-scale. The article also introduces the time synchronization issue, which needs to be solved when executing parallel simulation systems and application of multi-threads programming technique to build a program for the system.
Transformer Selection Research Based on Blind Number Theory
Authors: Zheng Xue Bing , Li Ran
Published: February 2014

For a long time, the power company is always concerned about acquisition costs in power equipment selection and ignores the impact of operating costs on the selection decision. Thus, the selection model has a certain one-sidedness. In this paper, the life cycle costs theory is applied to the transformer selection, which consider transformer initial investment costs, operation and maintenance costs, technological overhaul costs, the cost of failure and scrap disposal costs in full life cycle more comprehensively. The result not only gives the transformer blind number expectations of full life cycle cost, but also can give the credibility of different costs interval and have a certain reference value.
An Improved Optimal Algorithm of N-1 PMU Location
Authors: Zheng Ming Zhong , Zhang Qing Chao , Zhang Heng Chao , Gao Wei Zhao
Published: February 2014

PMU has been widely used in the power system state estimation, dynamic monitoring, and stability control. To achieve system completely observable and a certain degree of reliability, we need to set N-1 redundancy for PMU in the system. LR is a traditional method solving the N-1 best location problem. However, it can't meet the need of economical efficiency due to its oversimplified computation. This article make the biggest intersection between the solution from which that won't set redundancy and that from the LR[ method. On the basis of the intersection result, several iteration is needed to get the appreciate result which would lead the least cost.
Thermal Stress Analysis of High Voltage Porcelain Post Insulator
Authors: Zhang En Wei , Yang Yun Bo , Song Wei , Wei Xiao Wei , Qiu Zhi Bin , Ruan Jiang Jun , Huang Dao Chun
Published: February 2014

Thermal stress caused by different expansion coefficients of porcelain, cement and cast iron is one of the reasons that lead to fracture accidents of high voltage porcelain post insulators. In order to study the thermal stress distribution of post insulator, finite element model is established for numerical simulation calculation under different environmental temperatures contains steady state analysis and transient analysis. The results indicate that temperature variation cause stress concentration at the flange interface of post insulator, while the adverse effect caused by low temperature environment below zero degree centigrade is severer than high temperature.
Study on Method Detecting Turn-to-Turn Short Circuit of Transformer Based on Kalman Filter
Authors: Quan Yu Sheng , Zhang Zong Cheng , Chen Guang , Wang Dai Juan
Published: February 2014

Distribution transformer is an important device in the power system, once its failure can cause power outages. According to statistics, 70% -80% of the transformer accident was caused by a short circuit between the transformer turns. In this paper, the ground current of transformer core as the signal source, using Kalman filter techniques to approximate the measured signal, obtained state transition parameters of the prediction signal that most approximate the signal measured , Generated the inter-turn short circuit fault diagnostic parameters, based on the range of parameters to achieve the transformer inter-turn short circuits fault diagnosis. To verify this method, this paper design experiment, the results prove the validity and feasibility of the methods for fault diagnosis.
Influence of Baader Aging on Hydrogenated Transformer Oil
Authors: Tang Feng , Qian Yi Hua , Huang Yi Bin
Published: February 2014

Under the condition of Baader aging, the chemical composition variation and the influence of transformer oil aging on electrical properties such as dielectric loss factor and physic-chemical properties such as interfacial tension were studied in the aging precess. Moreover, the correlation between hydrogenated transformer oil electrical and physic-chemical properties and its chemical composition variation were investigated.
Smart Devices with Plug and Play Technique for Smart Grid Dispatch and Control System
Authors: Yuan Rong Chang , Deng Zhao Yun , Li Li Xin , Hao Yang Chun , Di Fang Chun , Hua Jing
Published: February 2014

Smart Grid Systems mainly relies on many secondary automatic systems and information systems, such as Smart Grid Dispatch and Control System, Distribution Automation System, Automatic Safety Devices, Marketing System and etc. These systems are frequently incompatible with many devices and therefore waste much manpower for the compatibility. These systems cannot fulfill automatic configuration, auto-discovery, rapid reconstruction and etc. Plug and Play (PnP) stems from computer and Internet concept. This article bases on "Universal Plug and Play (UPnP)" concept, to build automatic identifying, automatic accessing mechanisms or system architecture in Smart Grid field, in order to realize automatic structuring for the secondary control system and information system, thus realize PnP and rapid restructure for the Smart Grid System, which bases on Smart Grid Dispatch and Control System.