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If the principle of virtual work for applied forces is used on individual particles of a rigid body, the principle can be generalized for a rigid body: When a rigid body that is in equilibrium is subject to virtual compatible displacements, the total virtual work of all external forces is zero; and conversely, if the total virtual work of all ...
The basic architecture of a motion control system contains: A motion controller, which calculates and controls the mechanical trajectories (motion profile) an actuator must follow (i.e., motion planning) and, in closed loop systems, employs feedback to make control corrections and thus implement closed-loop control.
A GTK+ dialog box for printing to either a virtual printer (to create a PDF or PostScript file) or a physical printer. In computing a virtual printer is a simulated device whose user interface and API resemble that of a printer driver, but which is not connected to a physical computer printer.
Pastor Seva, Pedro; Manuel Marco Such; Pedro Pernías Peco (1999). "Exploitatión de la Biblioteca Virtual "Miguel de Cervantes" en un ambiente de enseñanza colaborativa distribuida". In Lic. José Joaquín Villegas; et al. (eds.). El estudiante de la educación a distancia en la perspectiva de un nuevo milenio: memoria, vol. 2. X Congreso ...
Virtual DOS machines can operate either exclusively through typical software emulation methods (e.g. dynamic recompilation) or can rely on the virtual 8086 mode of the Intel 80386 processor, which allows real mode 8086 software to run in a controlled environment by catching all operations which involve accessing protected hardware and forwarding them to the normal operating system (as exceptions).
Provided the data are strictly positive, a better measure of relative accuracy can be obtained based on the log of the accuracy ratio: log(F t / A t) This measure is easier to analyze statistically and has valuable symmetry and unbiasedness properties.
Originally introduced by Sir Isaac Newton in Philosophiæ Naturalis Principia Mathematica, the concepts of absolute time and space provided a theoretical foundation that facilitated Newtonian mechanics. [3]