Results 11 to 20 of about 543,647 (331)

Local kinematics and the local standard of rest [PDF]

open access: yes, 2009
We re-examine the stellar kinematics of the solar neighbourhood in terms of the velocity υ of the Sun with respect to the local standard of rest. We show that the classical determination of its component Vin the direction of Galactic rotation via Str ...
R. Schönrich, J. Binney, W. Dehnen
semanticscholar   +1 more source

DEM Analysis of Track Ballast for Track Ballast–Wheel Interaction Simulation

open access: yesApplied Sciences, 2020
This study aims to suggest a rational analysis method for a track ballast–wheel interaction that could be further developed to model the interaction in a train-derailment event, based on the discrete-element method (DEM).
Nam-Hyoung Lim   +3 more
doaj   +1 more source

Comparison between Accelerometer and Gyroscope in Predicting Level-Ground Running Kinematics by Treadmill Running Kinematics Using a Single Wearable Sensor

open access: yesSensors, 2021
Wearable sensors facilitate running kinematics analysis of joint kinematics in real running environments. The use of a few sensors or, ideally, a single inertial measurement unit (IMU) is preferable for accurate gait analysis.
Daniel Hung Kay Chow   +5 more
doaj   +1 more source

Kinematic Design

open access: yes, 2022
AbstractOne aspect in haptic devices is the design of the kinematics. The kinematics of a mechanism is the key to implement and accomplish the design goals, like transmitting dynamic feedback in the form of forces or torques, or allowing a sufficient workspace for the user to interact with environment. This chapter introduces the steps of the kinematic
Youssef, Fady, Kassner, Sebastian
openaire   +1 more source

Kinematic Bézier Maps [PDF]

open access: yesIEEE Transactions on Systems, Man, and Cybernetics, Part B (Cybernetics), 2012
The kinematics of a robot with many degrees of freedom is a very complex function. Learning this function for a large workspace with a good precision requires a huge number of training samples, i.e., robot movements. In this paper, we introduce the Kinematic Bézier Map (KB-Map), a parameterizable model without the generality of other systems but whose ...
Ulbrich, Stefan   +4 more
openaire   +5 more sources

Reliability and discriminative accuracy of 5 measures for craniocaudal humeral position: an assessment on conventional radiographs

open access: yesJSES International, 2020
Hypothesis: This study aimed to examine the reliability and diagnostic discriminative accuracy of 5 different methods that quantity the craniocaudal humeral position with respect to the scapula on conventional radiographs. Methods: In this retrospective,
Arjen Kolk, MD   +4 more
doaj   +1 more source

KINEMATICALLY BLOCKED CURVATON [PDF]

open access: yesModern Physics Letters A, 2011
In this paper, we investigate the idea that the decay of a curvaton is kinematically blocked and show that the coupling constant for curvaton decay can be as large as [Formula: see text]. We also find in this case the lower bound of the Hubble parameter at horizon exit from big bang nucleosynthesis (BBN) is H* ≳ 7.2 × 10-9M P ~ 1010 GeV .
Lee, Lu-Yun   +2 more
openaire   +2 more sources

Age-Related Changes in Inter-Joint Interactions for Global and Local Kinematics While Standing

open access: yesIEEE Transactions on Neural Systems and Rehabilitation Engineering, 2023
Inter-joint interactions are involved in human standing. These interactions work not only for global kinematics that control the center of mass (COM) of the entire body, but also for local kinematics that control joint angular movements.
Kimiya Fujio, Yahiko Takeuchi
doaj   +1 more source

Hierarchical Diffusion Policy for Kinematics-Aware Multi-Task Robotic Manipulation [PDF]

open access: yesComputer Vision and Pattern Recognition
This paper introduces Hierarchical Diffusion Policy (HDP), a hierarchical agent for multi-task robotic manipulation. HDP factorises a manipulation policy into a hierarchical structure: a high-level task-planning agent which predicts a distant next-best ...
Xiao Ma   +3 more
semanticscholar   +1 more source

Evaluation of a multibody kinematics optimization method for three-dimensional canine pelvic limb gait analysis

open access: yesBMC Veterinary Research, 2020
Background Skin marker-based three-dimensional kinematic gait analysis were commonly used to assess the functional performance and movement biomechanics of the pelvic limb in dogs.
Cheng-Chung Lin   +5 more
doaj   +1 more source

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