Ophthalmology

Read e-book online Advances in Computers, Vol. 9 PDF

By Marvin Zelkowitz Ph.D. MS BS.

ISBN-10: 0120121093

ISBN-13: 9780120121090

On the grounds that its first quantity in 1960, Advances in Computers has offered unique assurance of strategies in and software program and in laptop concept, layout, and purposes. It has additionally supplied contributorswith a medium within which they could study their matters in higher intensity and breadth than that allowed by means of typical magazine articles. for this reason, many articles became average references that remain of vital, lasting price regardless of the quick progress occurring within the box.

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Additional info for Advances in Computers, Vol. 9

Sample text

This modification and refinement of the published version of PHYSBE (by Baker Mitchell and his colleagues in the Department of Mathematics at the University of Texas, Texas Medical Center, Houston) was implemented for the following reasons: ( 1 ) to allow study of effects of hydraulic characteristics and timing of DeBakey-type heart pumps on the over-all circulation; (2) to provide physiologically accurate pressure curves for obtaining 40 JOHN McLEOD and testing models of baroreceptor characteristics and their influence on heart rate; and (3) to analyze and simulate tilt-table responses as recorded from astronauts, and to extrapolate these responses to 0-to-6 g space environments.

Twiddling,” plus the generation of the 41 ADVANCES IN SIMULATION Figure 1 is a block diagram of this simulation, Fig, 2 is a one-page sample of the five-page digital computer listing, and Fig. 3 is the analog computer diagram. It is interesting to note that this particular simulation demonstrated the well-recognized limitations of both the analog and digital computers: They ran' out of analog equipment and digital time. 1. Block diagram of hybrid mechanization of PHYSBE as modified to include the requirements listed in the text.

How much error is introduced by the reaction of the patient (or experimental animal, for that matter) to such a traumatic preparation? It is indeed difficult to say. Given a valid simulation, mensuration presents no problem. All parameters and variables are available in an analog computer, where they can easily be measured. In a digital computer they are probably computed as part of the simulation; if not, it can easily be done. Obviously, the difficulty is that the stress-provoking procedures described (or others which may be less stressful but more indirect and/or more difficult) will have to be used to gather data required to develop the simulation.

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Advances in Computers, Vol. 9 by Marvin Zelkowitz Ph.D. MS BS.


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