Showing 11,161 - 11,180 results of 19,511 for search '"algorithm"', query time: 0.09s Refine Results
  1. 11161

    Analysis of MIMO antenna array based on electromagnetic vector sensor by Jie ZHOU, Lin QIU, Kikuchi HISAKAZU

    Published 2013-05-01
    “…EVS(electromagnetic vetor sensor) signal processing method was combined with traditional MIMO signal processing method and three-dimensional channel model of multi-antenna array was set up.The algorithm of multiple signal classification (MUSIC) was adopted to make spatial spectrum estimation for direction of arrival (DOA) signal,analytical expressions of three-dimensional spatial channel was derived base on EVS for MIMO receiver system and the relationship between EVS signal processing and MIMO multipath channel correlation was clarified.To compare with tra-ditional MIMO antenna array,EVS array possesses abilities of obtaining multidimensional polarization information,processing spatial and polarization domain for arrival signal and degrading effects of spatial factors on MIMO channel capacity.Theoretical analysis and simulation results indicate that EVS array provide more advantages than traditional scalar sensor array on enhancing MIMO system performance.…”
    Get full text
    Article
  2. 11162

    Frequency-Division Combination Forecasting of Stock Market Based on Wavelet Multiresolution Analysis by Shihua Luo, Jiangyou Huo, Zian Dai

    Published 2018-01-01
    “…Using the daily closing price data of SSE (Shanghai Stock Exchange) Composite Index and Shenzhen Component Index as samples, compared with conventional wavelet prediction model, ARIMA model, and BP neural network model, the empirical results show that the new algorithm M-ARIMA-BP can improve the accuracy of volatility forecasting and perform better in predicting prices rising and falling.…”
    Get full text
    Article
  3. 11163

    Research on verification of behavior requirement patterns based on action sequences by DU Jun-wei1, XU Zhong-wei2, JIANG Feng1

    Published 2011-01-01
    “…Function behavior requirements(FBR) and safety behavior requirements(SBR) were described by action se-quences.Compared with the traditional logic or graphic form,action sequences can express the temporal relationship among interactive behaviors more exactly.Moreover,FBR pattern and SBR pattern are constructed by action sequences,and the operation semantics of these patterns are also given.To implement the requirement verification based on behavior patterns,the necessary and sufficient conditions as well as the checking algorithm for the satisfiability of FBR pattern and SBR pattern are presented and proven by redefining the property expression and combination operation of LTS’s safety and liveness.The framework has been widely applied in the formal verification & validation of component-based CTCS2/3 systems,and has shown great theoretical and practical significance to combinational verification of Compo-nent-based safety-critical systems.…”
    Get full text
    Article
  4. 11164

    OPTIMAL DESIGN OF MODIFIED SPUR GEARS BASED ON MINIMUM FLASH TEMPERATURE by YU DongYang, JIANG JinKe, SONG Qiang, FANG ZongDe

    Published 2017-01-01
    “…Considering the installation error and tooth flank clearance of modified involute cylindrical gears influencing on load density,oil film thickness,and local friction coefficient.an optimum design method based on the minimum flash temperature was proposed.Applied TCA and LTCA to modification technology,the friction coefficient was determined according to the film thickness ratio under different lubricating condition,oil film thickness and loads on contact line were discretized,so discrete temperature according to the Blok flash temperature formula were got.used genetic algorithm to optimize the parameter of curve,and got the best deviation surface.the results shows that there are more uniform loads and flash temperature with modified gears,while the smallest is at engaging-in area due to the effect of curvature radius,besides the flash temperature has little changes in the single tooth meshing zone of spur gear.…”
    Get full text
    Article
  5. 11165

    Newfangled Linearization Formula of Certain Nonsymmetric Jacobi Polynomials: Numerical Treatment of Nonlinear Fisher’s Equation by W. M. Abd-Elhameed, Afnan Ali, Y. H. Youssri

    Published 2023-01-01
    “…To demonstrate the efficiency and usefulness of the proposed algorithm, some examples are shown, including comparisons with some existing techniques in the literature.…”
    Get full text
    Article
  6. 11166

    Inverse Approach to Evaluate the Tubular Material Parameters Using the Bulging Test by Yulong Ge, Xiaoxing Li, Lihui Lang

    Published 2015-01-01
    “…An inverse procedure is adopted to determine the tubular material properties in Krupkowski-Swift constitutive model of material deformation using a hybrid algorithm that combines the differential evolution and Levenberg-Marquardt algorithms. …”
    Get full text
    Article
  7. 11167

    A computationally efficient non‐iterative four‐parameter sine fitting method by Balázs Renczes, Vilmos Pálfi

    Published 2021-10-01
    “…Finally, measurements and computer simulations are carried out to demonstrate the reduced computational demand, while preserving the accuracy compared with the algorithm proposed in the IEEE standard.…”
    Get full text
    Article
  8. 11168

    Joint Power and Multiple Access Control for Wireless Mesh Network with Rose Projection Method by Meiqin Tang, Lili Shang, Yalin Xin, Xiaohua Liu, Xinjiang Wei

    Published 2014-01-01
    “…A cross-layer joint power and multiple access control algorithm are proposed. Rosen projection matrix is combined with Solodov projection techniques to build a three-memory gradient Rosen projection method, which is applied to solve this optimization problem. …”
    Get full text
    Article
  9. 11169

    QUANTITATIVE STRUCTURE–ACTIVITY RELATIONSHIPS (QSAR) STUDY ON NOVEL 4-AMIDINOQUINOLINE AND 10-AMIDINOBENZONAPHTHYRIDINE DERIVATIVES AS POTENT ANTIMALARIA AGENT by Aliyu Wappah Mahmud, Gideon Adamu Shallangwa, Adamu Uzairu

    Published 2019-06-01
    “…was used to optimize the compounds. Genetic Function Algorithm (GFA) was employed in selecting descriptors and building the model. …”
    Get full text
    Article
  10. 11170

    Multi-constrained trusted cooperative task migration strategy for edge computing by Guangxue YUE, Yasheng DAI, Xiaohui YANG, Youkang ZHU, Zhenxu YOU, Jiansheng LIU

    Published 2019-11-01
    “…In order to guarantee the quality of service of edge computing,a trusted cooperative task distribution strategy for edge computing under multi-dimensional constraints was proposed.The strategy was based on the task requirements,and the edge computing collaborative service leader node organizes the coordinated service alliance members.The priority of cooperative service alliance was determined based on the K-dimension weight index of user task migration.Using the load balancing of the members as the adaptive function,the task allocation and dispatch of alliance members were performed by greedy algorithm.The backup node was selected based on routing piggyback,and the priority of migration was evaluated.The scheduling and migration of collaborative services in case of abnormal collaborative services were realized,which improved the quality of service of edge computing task migration and ensured the reliability of task migration.The simulation results show that the mechanism can effectively complete the task distribution and migration scheduling,improve the collaborative efficiency of edge computing,and guarantee the quality of network service.…”
    Get full text
    Article
  11. 11171

    A SINGULAR INTERVAL RECONSTRUCTION LOCAL MEAN DECOMPOSITION AND ITS APPLICATION IN BEARING FAULT DIAGNOSIS OF RECIPROCATING COMPRESSOR (MT) by ZHAO HaiYang, LI Xue, LIU ZuJian, WANG JinDong, FENG Shuai

    Published 2023-01-01
    “…A singular interval envelope reconstruction algorithm is formed. The simulation signal and the application of fault diagnosis of reciprocating compressor bearing prove that the proposed method solves the envelope crossing problem, suppresses the demodulation mutation phenomenon, and the decomposition result has more obvious fault characteristics.…”
    Get full text
    Article
  12. 11172

    Utilizing Artificial Neural Network for Load Prediction Caused by Fluid Sloshing in Tanks by Hossein Goudarzvand Chegini, Gholamreza Zarepour

    Published 2021-01-01
    “…The backpropagation of the error algorithm was then used to apply the two multilayer feed-forward neural networks and the recurrent neural network. …”
    Get full text
    Article
  13. 11173

    Beamforming for Non-Orthogonal Multicast and Unicast Transmissions Based on Rate Splitting in Satellite-Terrestrial Integrated Network by Bensi ZHANG, Deyi PENG, Yun LI

    Published 2022-12-01
    “…A non-orthogonal multicast and unicast transmission scenarios in the satellite-terrestrial integrated networks (STIN was considered), and a system model of joint multi-group multicast and unicast downlink transmitting was constructed.In order to improved the spectral effi ciency of STIN, a beamforming scheme that non-orthogonal transmission based on rate splitting was proposed, where a max-min fair (MMF) beamforming design problem was established to optimized transmit beamforming vector of base station and satellite respectively.And then, considered non-convex constraint caused by variable coupling in the problem, an iterative algorithm based on successive convex approximation to solved the optimization problem was proposed.Simulation results showed that our proposed scheme could improved eff ectively the MMF transmitting rate of the STIN in contrast with the traditional non-rate splitting and layer division multiplexing schemes.…”
    Get full text
    Article
  14. 11174

    Driver Source-Based Traffic Control Approach for Mitigating Congestion in Freeway Bottlenecks by Minglun Li, Hu Yang, Bao Guo, Jianjun Dai, Pu Wang

    Published 2022-01-01
    “…Next, the differential evolution algorithm is employed to calculate the optimal control time at each traffic control on-ramp. …”
    Get full text
    Article
  15. 11175

    Consensus Congestion Control in Multirouter Networks Based on Multiagent System by Xinhao Yang, Sheng Xu, Ze Li

    Published 2017-01-01
    “…Simulation results by MATLAB and Ns2 indicate that the proposed algorithm maintains a high throughput and a low packet drip ratio and improves the quality of the service in the complex network environment.…”
    Get full text
    Article
  16. 11176

    ROLLING BEARING FAULT DIAGNOSIS BASED ON FUSION CNN AND PSO-SVM by WANG YongDing, JIN ZiQi

    Published 2021-01-01
    “…Aiming at the problem that it is difficult to extract subtle fault features in the process of rolling bearing fault identification,this paper proposes a rolling bearing fault diagnosis method based on fusion convolutional neural network and support vector machine based on particle swarm optimization algorithm. In this method,the bearing vibration signal is used as the input signal of the one-dimensional convolutional neural network and the two-dimensional convolutional neural network,and the extracted fault information is fused in the convergence layer. …”
    Get full text
    Article
  17. 11177

    Research on Cloudlet selection strategy for data streaming applications in mobile cloud environment by Wei LIU, Shu XIONG, Wei DU, Wei WANG

    Published 2019-01-01
    “…Most existing Cloudlet selection strategies only used the resources of one Cloudlet to compute offloading,which couldn’t obtain the superior performance improvement for mobile data streaming application with many parallel components.To address this issue,a Cloudlet selection strategy based on chemical reaction optimization algorithm was proposed.The strategy aims to reduce application’s completion time and energy consumption of mobile device.When the dependencies among application’s components was satisfied,the strategy can take full advantage of the computing capability of multi-cloudlet to execute the parallel components of mobile data stream application simultaneously.Therefore the strategy can improve the execution efficiency and reduce the energy consumption of mobile device.The simulation results reveal that the proposed strategy can achieves 18.3% on average performance improvement than POCSS strategy does in multi-Cloudlet environment.…”
    Get full text
    Article
  18. 11178

    Forced vibration analysis of laminated composite plates under the action of a moving vehicle by H.A. Mobaraki, R.-A. Jafari-Talookolaei, P.S. Valvo, R. Haghani

    Published 2022-01-01
    “…Using the Euler-Lagrange equations, the system of coupled equations of motion is extracted and solved by using the Newmark time discretization scheme. The algorithm is validated through the comparison of both the free and forced vibration results provided by the present model and exact or numerical results reported in the literature. …”
    Get full text
    Article
  19. 11179

    Upper processing gain bound of the spreading signal in multipath fading channels by Wan-zhi MA, Jun WANG, You-xi TANG

    Published 2012-03-01
    “…Using the joint algorithm of coherent detection and non-coherent detection,the upper processing gain bound of the spreading signal,which is two-dimensional spread spectrum signal relative to BPSK and transmitted in rich scattering multipath fading channel,was sought.Firstly,the expression of the processing gain of the spreading signal was calculated.Secondly,with increasing signal bandwidth or symbol period unlimitedly,the processing gain was bounded.At last,it was obtained that the upper processing gain bound is determined by the channel parameters and signal noise io.By analysis and simulation,the processing gain of the spreading signal,relative to BPSK and transmits in rich scattering multipath fading channel,is not more than 30dB,when the signal noise ratio is 20dB,the maximum doppler shift is 100Hz,and the negative exponential factor is 5×10<sup>−6</sup>.…”
    Get full text
    Article
  20. 11180

    In-flight alignment method of navigation system based on microelectromechanical systems sensor measurement by Jianwei Liu, Tao Zhao

    Published 2019-04-01
    “…A high-precision combination of satellite positioning and microinertial navigation is realized through design of a new integrated algorithm framework. The experimental results show that the proposed methods can effectively solve the current problems in guided ammunition navigation.…”
    Get full text
    Article