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11161
Analysis of MIMO antenna array based on electromagnetic vector sensor
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.…”
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11162
Frequency-Division Combination Forecasting of Stock Market Based on Wavelet Multiresolution Analysis
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.…”
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11163
Research on verification of behavior requirement patterns based on action sequences
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.…”
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11164
OPTIMAL DESIGN OF MODIFIED SPUR GEARS BASED ON MINIMUM FLASH TEMPERATURE
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.…”
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11165
Newfangled Linearization Formula of Certain Nonsymmetric Jacobi Polynomials: Numerical Treatment of Nonlinear Fisher’s Equation
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.…”
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11166
Inverse Approach to Evaluate the Tubular Material Parameters Using the Bulging Test
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. …”
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11167
A computationally efficient non‐iterative four‐parameter sine fitting method
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.…”
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11168
Joint Power and Multiple Access Control for Wireless Mesh Network with Rose Projection Method
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. …”
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11169
QUANTITATIVE STRUCTURE–ACTIVITY RELATIONSHIPS (QSAR) STUDY ON NOVEL 4-AMIDINOQUINOLINE AND 10-AMIDINOBENZONAPHTHYRIDINE DERIVATIVES AS POTENT ANTIMALARIA AGENT
Published 2019-06-01“…was used to optimize the compounds. Genetic Function Algorithm (GFA) was employed in selecting descriptors and building the model. …”
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11170
Multi-constrained trusted cooperative task migration strategy for edge computing
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.…”
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11171
A SINGULAR INTERVAL RECONSTRUCTION LOCAL MEAN DECOMPOSITION AND ITS APPLICATION IN BEARING FAULT DIAGNOSIS OF RECIPROCATING COMPRESSOR (MT)
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.…”
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11172
Utilizing Artificial Neural Network for Load Prediction Caused by Fluid Sloshing in Tanks
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. …”
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11173
Beamforming for Non-Orthogonal Multicast and Unicast Transmissions Based on Rate Splitting in Satellite-Terrestrial Integrated Network
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.…”
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11174
Driver Source-Based Traffic Control Approach for Mitigating Congestion in Freeway Bottlenecks
Published 2022-01-01“…Next, the differential evolution algorithm is employed to calculate the optimal control time at each traffic control on-ramp. …”
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11175
Consensus Congestion Control in Multirouter Networks Based on Multiagent System
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.…”
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11176
ROLLING BEARING FAULT DIAGNOSIS BASED ON FUSION CNN AND PSO-SVM
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. …”
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11177
Research on Cloudlet selection strategy for data streaming applications in mobile cloud environment
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.…”
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11178
Forced vibration analysis of laminated composite plates under the action of a moving vehicle
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. …”
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11179
Upper processing gain bound of the spreading signal in multipath fading channels
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>.…”
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11180
In-flight alignment method of navigation system based on microelectromechanical systems sensor measurement
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.…”
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