Results 21 to 30 of about 2,782,327 (303)

Global Solutions to the Spherically Symmetric Compressible Navier-Stokes Equations with Density-Dependent Viscosity and Discontinuous Initial Data

open access: yesAbstract and Applied Analysis, 2014
We consider the initial boundary value problem for the spherically symmetric isentropic compressible Navier-Stokes equations with density-dependent viscosity coefficients and discontinuous initial data in this paper. For piecewise regular initial density
Ruxu Lian, Jianwei Yang, Jian Liu
doaj   +1 more source

Relationship between Kinematic Variables of Jump Throwing and Ball Velocity in Elite Handball Players

open access: yesApplied Sciences, 2019
The purpose of this pilot study was to evaluate the relationship between the kinematic variables of the right hand and left leg with ball velocity during jump-throwing phases in handball for better-informed training. We investigated ball velocity and the
Abdel-Rahman Akl   +3 more
doaj   +1 more source

Knee Movement Characteristics of Basketball Players in Landing Tasks Before Onset of Patellar Tendinopathy: A Prospective Study

open access: yesFrontiers in Sports and Active Living, 2022
BackgroundPatellar tendinopathy is one of the most common injuries for basketball players. Jumping and landing movement patterns are potential risk factors for patellar tendinopathy.HypothesisMale college basketball players who developed patellar ...
Ru Feng   +6 more
doaj   +1 more source

Scale Jump-Aware Pose Graph Relaxation for Monocular SLAM with Re-Initializations

open access: yes2023 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2023
Pose graph relaxation has become an indispensable addition to SLAM enabling efficient global registration of sensor reference frames under the objective of satisfying pair-wise relative transformation constraints. The latter may be given by incremental motion estimation or global place recognition.
Runze Yuan   +4 more
openaire   +3 more sources

The effect of continuous natural roughness onhydraulic jump characteristics on the stone ramps

open access: yesمجله آب و خاک, 2017
Introduction: The hydraulic jump happens when flow transfers from supercritical regime to subcritical regime. The hydraulic jump on smooth bed is called the classic hydraulic jump.
M. F. Maghrebi, B. Mirzendehdel
doaj   +1 more source

Step-by-Step Method: Can it improve triple jump learning outcomes?

open access: yesSriwijaya Journal of Sport, 2022
The purpose of this study was to find out how many times students could do triple jumps. This research is classroom action research. The subjects in the study were students of class X SMAN 1 Maya Island, with a total of 16 students.
Arifin Arifin   +2 more
doaj   +1 more source

Changes in long jump take-off technique with increasing run-up speed [PDF]

open access: yes, 2006
The aim of this study was to determine the influence of run-up speed on take-off technique in the long jump. Seventy-one jumps by an elite male long jumper were recorded in the sagittal plane by a high-speed video camera.
Bridgett, LA, Linthorne, NP
core   +1 more source

Optimum take-off angle in the standing long jump [PDF]

open access: yes, 2005
The aim of this study was to identify and explain the optimum projection angle that maximises the distance achieved in a standing long jump. Five physically active males performed maximum-effort jumps over a wide range of take-off angles, and the jumps ...
Wakai, M   +3 more
core   +1 more source

Optimal Switching Synthesis for Jump Linear Systems With Gaussian Initial State Uncertainty [PDF]

open access: yesVolume 2: Dynamic Modeling and Diagnostics in Biomedical Systems; Dynamics and Control of Wind Energy Systems; Vehicle Energy Management Optimization; Energy Storage, Optimization; Transportation and Grid Applications; Estimation and Identification Methods, Tracking, Detection, Alternative Propulsion Systems; Ground and Space Vehicle Dynamics; Intelligent Transportation Systems and Control; Energy Harvesting; Modeling and Control for Thermo-Fluid Applications, IC Engines, Manufacturing, 2014
This paper provides a method to design an optimal switching sequence for jump linear systems with given Gaussian initial state uncertainty. In the practical perspective, the initial state contains some uncertainties that come from measurement errors or sensor inaccuracies and we assume that the type of this uncertainty has the form of Gaussian ...
Kooktae Lee, Raktim Bhattacharya
openaire   +2 more sources

Analysis of the Influence of Trace Point Step-Jump Behavior

open access: yesInternational Journal of Aerospace Engineering, 2020
To explore the influence of the trace point step-jump behavior on a terminal guidance system, an analysis is performed from the line-of-sight rate (LOS rate) and guidance accuracy views for designing an anti-step-jump guidance law.
Yao Yang, Yang Xu, Pei Wang
doaj   +1 more source

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