the coefficients of correlation corrected for noise, are presented. The values of ‘true’ coefficients of correlations, i.e. Such a correlation does not exist between F vf n and M vf n, see panel A-2. The arrows signify the sequence of events resulting in the high correlation between F th t and M vf n (‘chain effects’).
#Principle of superposition plus
The variables in the panels B ( F th t, F vf t, M t, M vf n) plus D vf n constitute the second subset of variables mentioned in the text. As the sum F th t and F vf t is constant, a change in one of these forces determines the difference between their values and, hence, the moment that these force produce. The different location of F th t and F vf t values along the straight line signifies the different magnitude of M t. Given a group of particles, we find the net (or resultant) gravitational force on any one of them from the others by using the principle of superposition. The principle of superposition is applied to detect areas where the atmospheric response is either enhanced or diminished according to concurrent land-use. This correlation was expected because F th t + F vf t = Constant ( weight of handle ). The values of F th t and F vf t are on a straight line. The correlation coefficients are close to zero. These two forces represent the first subset of variables mentioned in the text. This correlation was expected: in static tasks F th n and F vf n cancel each other. A-1: F th n correlated closely with F vf n. Interference refers to the superposing of two or more coherent waves to produce regions of maxima and minima in space, according to the principle of superposition. F and M designate the force and moment superscripts n and t refer to the normal and tangential force components subscripts th and vf refer to the thumb and virtual finger, respectively. The Principle Of Superposition states that when two waves of the same kind meet at a point in space, the resultant displacement at that point is the vector sum of the displacements that the two waves would separately produce at that point.
Interrelations among the experimental variables. As a result the forearm and wrist movements were abolished and the handle position was standard over all trials. The forearm was strapped and the proximal part of the hand was supported by an Orthoplast-made brace that was individually molded to the hand shape.
The moments of the normal finger forces were computed with respect to the point of application of the thumb force. In both the experiments the thumb sensor was in the central position with respect to the working fingers. In the second experiments, they grasped the handle with all five digits. In the first experiment the subjects grasped the handle with the thumb, index, middle and ring fingers. The force components in the X and Y directions are called normal and tangential forces, respectively. The black rectangles represent the 6-component force and torque sensors. The torque varied by displacing the load along the horizontal beam.
The load and/or torque varied across the trials. Subjects maintained the handle statically in the upright position for 3 s. The experimental handle and the digit placement.
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