Results 101 to 110 of about 2,041,615 (364)

Influence of internal structure on the motion of test bodies in extreme mass ratio situations

open access: yes, 2012
We investigate the motion of test bodies with internal structure in General Relativity. With the help of a multipolar approximation method for extended test bodies we derive the equations of motion up to the quadrupolar order.
Puetzfeld, Dirk, Steinhoff, Jan
core   +1 more source

Impact of enhanced leaf model on dose calculation accuracy in single‐isocenter multitarget stereotactic radiosurgery treatments

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Single‐isocenter multitarget (SIMT) radiosurgery has become increasingly popular as advancement in planning and delivery systems have made this approach clinically viable. With targets varying in size and distance from isocenter, SIMT plans are highly complex with dynamic multileaf collimator (MLC) motion.
Hem Moktan   +3 more
wiley   +1 more source

Effect of Guided Discovery learning model in mastering of Force and Motion subject

open access: yesIndonesian Journal of Applied Physics, 2015
This research aims to describe students’ mastering of the basic concept about Force and Motion through the Guided Discovery learning model. This research uses pre-experimental one-group pretest-post test design.
Parno P
doaj   +1 more source

Evaluating the use of diagnostic CT with flattening filter free beams for palliative radiotherapy: Dosimetric impact of scanner calibration variability

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Palliative radiotherapy comprises a significant portion of the radiation treatment workload. Volumetric‐modulated arc therapy (VMAT) improves dose conformity and, in conjunction with flattening filter free (FFF) delivery, can decrease treatment times, both of which are desirable in a population with a high probability of retreatment ...
Madeleine L. Van de Kleut   +2 more
wiley   +1 more source

Physics-data hybrid dynamic model of a multi-axis manipulator for sensorless dexterous manipulation and high-performance motion planning

open access: yesInternational Journal of Advanced Robotic Systems
We report on the development of an implementable physics-data hybrid dynamic model for an articulated manipulator to plan and operate in various scenarios.
Wu-Te Yang, Jyun-Ming Liao, Pei-Chun Lin
doaj   +1 more source

Using Arduino to develop research competencies of students in school physics education

open access: yesCTE Workshop Proceedings
Arduino is a popular hardware and software platform that enables the development of various engineering projects, especially in physics and computer science.
Vitalii M. Zadorozhnii
doaj   +1 more source

An Idealized Test of the Response of the Community Atmosphere Model to Near‐Grid‐Scale Forcing Across Hydrostatic Resolutions

open access: yesJournal of Advances in Modeling Earth Systems, 2018
A set of idealized experiments are developed using the Community Atmosphere Model (CAM) to understand the vertical velocity response to reductions in forcing scale that is known to occur when the horizontal resolution of the model is increased.
A. R. Herrington, K. A. Reed
doaj   +1 more source

Non-rigid 3D motion estimation at high temporal resolution from prospectively undersampled k-space data using low-rank MR-MOTUS [PDF]

open access: yesarXiv, 2020
With the recent introduction of the MR-LINAC, an MR-scanner combined with a radiotherapy LINAC, MR-based motion estimation has become of increasing interest to (retrospectively) characterize tumor and organs-at-risk motion during radiotherapy. To this extent, we introduce low-rank MR-MOTUS, a framework to retrospectively reconstruct time-resolved non ...
arxiv  

Commissioning of Halcyon enhanced leaf model in the Eclipse treatment planning system: Focus on simple slit fields and VMAT dose calculation

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose The dual‐layer multileaf collimator (MLC) in Halcyon adds complexities to the dose calculation process owing to the variability of dosimetric characteristics with leaf motion. Recently, an enhanced leaf model (ELM) was developed to refine the MLC model in the Eclipse treatment planning system. This study investigates the performance of
Ryohei Miyasaka   +6 more
wiley   +1 more source

JACMP – Founding and 2000–2004

open access: yes
Journal of Applied Clinical Medical Physics, EarlyView.
Michael Mills
wiley   +1 more source

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