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23481
THE OPTIMIZATION OF OVAL VARIABLE CROSS-SECTION BEAM IN MEMS
Published 2019-01-01“…To improve its stability, oval variable beam is selected to decrease stress concentration and widen the gap between the non-detection directional stiffness and detection directional stiffness, thereby reducing cross sensitivity and improving stability; To achieve the best dynamic performance, damping ratio ξ should be appropriate and theoretical stiffness of beam is calculated. By establishing the pure bending model of the beam, the stiffness formula and the strength condition of the beam is derived. …”
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23482
UHF RFID anti-collision algorithm based on blind separation and dynamic bit-slot grouping
Published 2012-04-01“…A novel ultra high frequency(UHF)radio frequency identification(RFID)anti-collision algorithm based on independent components analysis(ICA)and dynamic bit-slot grouping technology was proposed.The ICA algorithm was used for identifying several tags simultaneously.The dynamic bit-slot tags grouping technology was used for ensuring the number of tags read by a reader at the same time was less than or equal to its antennas’number,and enabling the ICA wouldn’t work in an underdetermined state.Theoretical analysis and simulated experimental results show that the tags identification rate of the proposed algorithm is far more than that of traditional stochastic or deterministic TDMA RFID anti-collision algorithms.…”
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23483
Approach towards the achievable sum rates capacity of Gaussian MIMO broadcast channels
Published 2006-01-01“…Since it is very difficult to compute the sum rates capacity of Gaussian MIMO broadcast channels directly by using dirty paper coding approach,an iterative water-filling algorithm is proposed to obtain the sum capacity bound for multi-access channel and a suboptimal transmission policy to achieve the capacity bound is derived from the algorithm.Based on the duality of multiple-access and broadcast channels,the capacity bound and transmission policy in multi-access channels are mapped into the broadcast channel.Numerical results show that the proposed iterative algorithm is simple and effective to calculate the sum capacity bound,and the capacity achieved by the transmission policy is very close to the theoretical bound.This policy is quite considerable for downlink transmission of MIMO systems.…”
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23484
Study on Multi-body Dynamics of Cycloidal Pin Wheel Transmission of RV Reducer
Published 2020-07-01“…The rigid-flexible coupling technique is used to extract the continuous node stress curve for analysis,and the position and size of the maximum contact force during meshing are determined,and a theoretical basis for the research and improvement on the way of subsequent shaping is provided.…”
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23485
Dynamics of a Predator-Prey System with a Mate-Finding Allee Effect
Published 2014-01-01“…The stability properties of the equilibria and a complete bifurcation analysis, including the existence of a saddle-node, a Hopf bifurcation, and, a Bogdanov-Takens bifurcations, have been proved theoretically and numerically. The blow-up method has been applied to investigate the structure of a neighborhood of the origin. …”
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23486
L’apprentissage hybride en sciences de gestion : ce qu’en pensent les étudiants
Published 2014-04-01“…The article ends with four proposals grounded in a theoretical framework on hybrid learning and teaching.…”
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23487
The Heart of the Current Reception of the Ecclesiology of the People of God. "New paths in the theology and practice of sensus fidei"
Published 2023-07-01“…We are living an ecclesial stage in which a first emergence of what will be a synodal ecclesiality can be appreciated, though not fully yet theorized. We will try to develop this in the following contribution. …”
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23488
FACTORS AFFECTING INTENTION OF JOB QUITTING AMONG UNIVERSITY LECTURERS IN VIETNAM
Published 2018-04-01“…The results of this study provide the theoretical and practical implications for policy formulation in the context in which brain drain from higher education institutions to other economic sectors is getting more severe and has been affecting the overall development of the education system.…”
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23489
Analysis of Forces and Fatigue Life of the Sun Wheel in Shearer Planetary Reducer
Published 2015-01-01“…According to the characteristics of coal cutting drum of shearer,the stress of drum is analyzed,the mechanical model of planetary reduction gear solar wheel’ s torque,instantaneous rotational speed and tangential force are obtained.By using the MATLAB software,the simulation of the derived mathematical model in sun wheel is carried out,with the pick position angle changes,the variation images of the solar wheel’s torque,instantaneous rotational speed and tangential force are obtained.Finally,the damage value under different loads is obtained by experiment,and based on the application of the Miner’s linear cumulative damage,the life of sun wheel is analyzed,it reaches a conclusion.For further optimal design of small size,high power of shearer provide a reliable theoretical basis.…”
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23490
Solution of Amplitude and Solution Domain of the Output Parameter of Disc Cam Mechanism with Floating Roller Push Rod
Published 2016-01-01“…The preceding study found that,regardless of digging the potential of existing mechanisms or scalable coverage,all has important theoretical value and practical engineering significance.…”
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23491
L’expérience d’une double différence : quand l’autisme croise la diversité sexuelle et de genre
Published 2020-11-01“…Their authors move to explain these correlations by evoking three main theoretical proposals, which are either sociobiologically, psychologically or psychosociologically based. …”
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23492
Efficiency analysis of distributed power combining for mobile platform
Published 2023-11-01“…Aiming at the position perturbation of mobile platform, the impact of position perturbation was analyzed on distributed power combining efficiency.The model of distributed power combining with position perturbation was established, and the average far-field beampattern, complementary cumulative distribution function (CCDF) expressions and the approximate expression of 3 dB beamwidth were derived.The results show that intensified position perturbation can lead to continuous deterioration of the average far-field beampattern, peak power, 3 dB beamwidth, and CCDF of distributed power combining.When the position perturbation reaches 9% of the signal wavelength, the signal peak power of the mobile platform after distributed power combining decreases to 90% of its theoretical upper limit.…”
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23493
Osama the Hero (2004) de Dennis Kelly ou pourquoi le théâtre politique n’est pas une « foutue perte de temps »
Published 2022-01-01“…This article examines the relationship between theatre and politics based on two texts – one theoretical, the other fictional – by British playwright Dennis Kelly. …”
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23494
La classe inversée comme approche pédagogique en enseignement supérieur : état des connaissances scientifiques et recommandations
Published 2017-03-01“…The article provides a theoretical base to fully understand the flipped classroom in action and a tool to ease its mobilization in any discipline.…”
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23495
Ternary interdiffusion coefficients in α2-phase Ti3Al/Nb system
Published 2012-01-01“…These results can provide a theoretical basis for the mechanisms of Nb improving the oxidation resistance of Ti3Al.…”
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23496
Study on Driving Performance of the Axial-Flow Blood Pump under the Condition of Large Gap
Published 2017-01-01“…Ansoft is adopted to simulate a three-dimensional driving torque to improve accuracy of computation. Experiments and theoretical study show that the use of Z10-T25 oriented silicon steel sheets as the electromagnetic core material can remarkably improve the system driving performance as well as optimize the volume and weight of the electromagnets. …”
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23497
Dynamic Modeling and Nonlinear Position Control of a Quadruped Robot with Theo Jansen Linkage Mechanisms and a Single Actuator
Published 2015-01-01“…Numerical simulations validate the efficacy of the designed controller, thus setting a theoretical basis for further investigations on Theo Jansen based quadruped robots.…”
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23498
Machine Learning and Safe and Inclusive Architecture for Fragile Users
Published 2019-06-01“…Finally, it describes the applications in Augmented Reality experimented in the research and the theoretical mechanisms of interaction between these and the Machine Learning algorithms.…”
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23499
The Impact of Metacognitive Capabilities on Product and Process Innovations in Supply Chain Relationships
Published 2025-01-01“…These results suggest that organizations can better handle the complex challenges of product and process innovation when leveraging metacognitive capabilities. The practical and theoretical implications of the findings and future research agendas are discussed in depth.…”
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23500
Optimal and Nonlinear Dynamic Countermeasure under a Node-Level Model with Nonlinear Infection Rate
Published 2017-01-01“…Specifically, the existence of an optimal dynamic countermeasure scheme and the corresponding optimality system are shown theoretically. Finally, some numerical examples are given to illustrate the main results, from which it is found that (1) the proposed optimal strategy can achieve a low level of infections at a low cost and (2) adjusting nonlinear infection and countermeasure rates and tradeoff factor can be conductive to the containment of virus propagation with less cost.…”
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