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2441
A Novel Universal Applicability Design Method for Low Cross-Polarization Terahertz Tri-Reflector CATR
Published 2022-01-01“…By using the beam mode analysis method and cross-polarization elimination conditions, the geometric configurations of the tri-reflector CATR can be designed for feeds in any different rotation angles, and then according to the kinematic and dynamic ray-tracing method with frequency independence in geometric optics, shaped subreflectors can also be synthesized. …”
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2442
Analytical and Computational Fluid Dynamics Methods for Determining the Torque and Power of a Vertical-Axis Wind Turbine with a Carousel Rotor
Published 2024-12-01“…Then, an analytical kinematic model of the turbine was developed. Finally, computational fluid dynamics (CFD) analysis was conducted to verify the analytical approach and examine aerodynamic interferences between particular turbine blades. …”
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2443
A Two-Step Composite Time Integration Scheme for Vehicle-Track Interaction Analysis considering Contact Separation
Published 2019-01-01“…First, two coupled vehicle-track models with different degrees-of-freedom are constructed, in which a vehicle-track system is modeled as two subsystems and the interaction between the two subsystems is implemented via kinematic constraints. Then, the two-step method is applied in the models to simulate several cases, and the accuracy and efficiency of this method are discussed in comparison with additional methods of the Newmark family. …”
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2444
Study on the Customization of Robotic Arms for Spray-Coating Production Lines
Published 2024-12-01“…A suspended body method allows flexible use within the workspace. Kinematics analysis is conducted, followed by trajectory-tracking experiments using the manifold deformation control method. …”
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2445
Analysis and Simulation of Polishing Robot Operation Trajectory Planning
Published 2025-01-01“…Using the Denavit–Hartenberg parameter method, a kinematic model is established, and the robot’s motion equations are derived through matrix transformation. …”
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2446
Transition versus Continuous Slope Walking: Adaptation to Change Center of Mass Velocity in Young Men
Published 2018-01-01“…Fourteen participants walked on a triangular slope and a continuous upslope of 15°. The kinematics and COPs were obtained using a force plate and a motion capture system. …”
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2447
Dihadron correlations in small-x DIS at NLO: transverse momentum dependent fragmentation
Published 2024-12-01“…Abstract We compute the inclusive dihadron cross-section in Deep Inelastic Scattering at next-to-leading order (NLO) and small x in the Color Glass Condensate. We focus on the kinematic limit where the hadrons are produced at forward rapidities (in the direction of the virtual photon) and back-to-back in the transverse plane. …”
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2448
The right way to ride the wrong bike: An exploration of Klein's 'unridable' bicycle.
Published 2025-01-01“…The secret is revealed through an exploration of the dynamics and control of the bike that contains three elements: (1) modeling the physics of the actively steered bicycle as an inverted pendulum riding atop a carriage; (2) recognizing that the steer kinematics leads to competing physical mechanisms which an aspiring rider might exploit; and (3) examining limitations of controllability and stabilizability of the system from a state space perspective. …”
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2449
Arm Propulsion in Front Crawl Stroke
Published 2025-01-01“…Data were collected using a Spectro instrument to measure the drag and 3D video analysis for kinematic of upper limbs movement. <b>Results</b>: The power balance was confirmed through the Bland–Altman estimation (estimated bias 8.5) and was also demonstrated by a one-way analysis of variance that does not show statistical differences. …”
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2450
Research of the Finite Element Simulation Method of Multi-tooth Meshing Gear Train Under Complex Mechanical Behavior
Published 2020-11-01“…The core transmission unit of the star gear drive reducer is a small-tooth-difference multi-tooth meshing gear train, which involves gears with multi-tooth elastic contact meshing, shaft-hole contact, and crankshaft rotation and so on drive relationship, gear motion includes fixed-axis rotation and compound rotation (rotation and translation).The relationship between mechanics and kinematics is more complicated, and there is no relevant theory in the calculation of strength, deformation and so on. …”
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2451
The Multiple Extended Tidal Tails of NGC 288
Published 2025-01-01“…We also detect a broad, at least ∼40° long leading tail that appears to be composed of at least two narrower, spatially offset, and kinematically distinct streams. Stream modeling predicts a similar broad composite of streams and suggests that these narrower components could each be made up of one or more generations of tidal tails, each formed during different orbits over the past few gigayears. …”
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2452
Optimization Design and Simulation of Single Degree of Freedom Legs of Quadruped Robots
Published 2024-03-01“…In order to solve the problems of multiple drives and weak leg stiffness of quadruped robots, a new leg mechanism with single degree of freedom is proposed, which is composed of two crank-rocker mechanisms, a synchronous belt drive and an external meshing cylindrical gear drive. The kinematics model of the mechanism is established and the coordinates of the foot end are derived. …”
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2453
Formulating the in-plane frictional resistances and collapse mechanisms for multi-storey masonry block walls
Published 2018-10-01“…In this paper a macro-block model accounting for frictional resistances is presented to assess the lateral strength of a multi-storey masonry block wall. The kinematic approach of limit analysis is used to define the load factor causing the onset of rocking-sliding mechanism under in-plane horizontal loading. …”
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2454
Biomechanical Effect of Valgus Knee Braces on the Treatment of Medial Gonarthrosis: A Systematic Review
Published 2022-01-01“…The purpose of this study was to review the effects of valgus braces on the spatiotemporal, kinematic/kinetic, morphological, and muscle parameters. …”
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2455
Inverse Position Solution and Workspace Analysis of a 2T2R Parallel Mechanism
Published 2021-06-01“…Firstly,the degree of freedom is analyzed by using the screw theory to institutions,get the mechanism can be realized to achieve two turn four degrees of freedom of movement,then by using the method of analytic vector inverse position analysis and using numerical search method combined with the inverse position equation,finding work space analysis work performance,and finally the position inverse equation by Matlab simulation,and by using the Adams results for validation,to prove the validity of the inverse kinematics model of the mechanism as well as the mechanism motion can be realized. …”
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2456
A Deep Q-Network-Based Collaborative Control Research for Smart Ammunition Formation
Published 2022-01-01“…The average total reward curve showed a reasonable convergence, and the relative kinematic relationship among the formation nodes met the requirements of the controller design. …”
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2457
The Association Between Functional Movement Screen Scores and Knee Valgus Moments During Unplanned Sidestep Cutting in Netball
Published 2023-02-01“…A 3D motion analysis system captured lower limb kinetics and kinematics of each participant's non-dominant leg during USC. …”
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2458
Multi-Scale Robotics: A Numerical Investigation on Mobile Micro-Tweezers for Micro-Manipulation with Extreme Requirements
Published 2024-12-01“…The said magnetic field is articulated by an open-kinematic chain controlled with a simple adaptive PI-control scheme. …”
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2459
Balance Design and Optimization of Swing Force of the New Spatial 1T1R Parallel Mechanism
Published 2023-04-01“…Secondly, divide the tree, determine the connecting branch component, and finally calculate the total mass moment of the mechanism by obtaining the mass moment of the two sub kinematic chains (SKC) contained in the mechanism. …”
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2460
Jets with electrons from boosted top quarks
Published 2020-01-01“…Our method uses the distribution of energy in different parts of the detector to identify a jet containing an energetic electron, involves use of substructure of the jet to determine the momentum associated with the electron and then completes the identification of top jet with the construction of new variables which would reflect the top quark decay kinematics. The last part involves an ansatz of the existence of a massless, invisible four-momentum roughly collimated with the electron, whose four- momentum when combined with that of the the electron and the full jet, reconstructs to the W boson and the top quark respectively. …”
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