نتایج جستجو برای: conservative accelerations
تعداد نتایج: 47735 فیلتر نتایج به سال:
We address the pitfalls of averaging by exploiting the longitudinal variation in aid to identify sudden and sharp increases in aid flows. Focusing on specific events, we test if aid accelerations correspond to policies and shocks in the recipient country. For a large sample of 145 recipient countries and 33 donors from 19602007, we find that positive regime changes and wars are significant pred...
A description of steady-state material transfer through the barrier of the idealized physiological transfer unit, phase 1, membrane, phase 2,-two homogeneous phases separated by a complex barrier-based upon Newton's laws of motion has been outlined previously.1 The supposition was made that the conservative forces tending to drive the kinetic materials through a barrier b can be derived from di...
Equations of motion, in cylindrical co-ordinates, for the observed rotation of gases within the gravitational potential of spiral galaxies have been derived from Carmeli’s Cosmological General Relativity theory. A Tully-Fisher type relation results and rotation curves are reproduced without the need for non-baryonic halo dark matter. Two acceleration regimes are discovered that are separated by...
Controversy surrounds the risk of heading a soccer ball. The research objectives were to determine the statistical distributions of head accelerations during soccer heading for adult versus youth players, to compare results with known safe levels, and to suggest steps to reduce risk for children. Monte Carlo simulations of large numbers of head-ball impacts were done using equations of motion b...
To obtain kinematic accelerations with high accuracy and reliability, multiple Global Positioning System (GPS) receivers with a single antenna can be used for airborne gravimetry. The data collected from each receiver can be processed for kinematic accelerations that may be combined using simple averaging. Here, however, uncorrelated errors from instrument errors in each receiver also will be i...
In examining films of lifting movements in a study of the size-weight illusion (Davis & Roberts, 1976) a consistency was noted in the values obtained for the maximum accelerations of the objects lifted. While at first surprising, this finding can be embedded significantly in theories relating to kinesthetic illusions and the perception of weight and to theories on the control of general physica...
225 words] 33 34 Recent studies have demonstrated that human quiet standing is a multi-joint movement, 35 whereby the central nervous system (CNS) is required to deal with dynamic interactions 36 among the joints to achieve optimal motor performance. The purpose of this study was to 37 investigate how the CNS deals with such inter-joint interaction during quiet standing by 38 examining the rela...
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