The Accuracy of One Method for Mechanism Simulation by Electronic Analog Computer

1965 ◽  
Vol 87 (2) ◽  
pp. 235-242 ◽  
Author(s):  
Robert E. Keller
Keyword(s):  
Computer System ◽  
Analog Computer ◽  
Four Bar Linkage

A method for the simulation of mechanisms on the electronic analog computer has been developed. In this paper a detailed discussion of the accuracy of the simulation is presented. Particular attention is given to the accuracy of the simulation of the simple kinematic link. Consideration is also made of the accuracy of the simulation when utilized in the study of complete mechanisms, for example, the accuracy to be expected of coupler curves for the four-bar linkage as generated by the simulation. Sample curves are given and their accuracy discussed. General relationships for achievement of an optimal computer system are presented.

Evoked Responses to Auditory Stimuli in Man Using a Summing Computer

1964 ◽  
Vol 7 (2) ◽  
pp. 193-202 ◽  
Author(s):  
Geary A. McCandless ◽  
LaVar Best
Keyword(s):  
Computer System ◽  
Age Groups ◽  
Stimulus Presentation ◽  
Analog Computer ◽  
Electrode Placement ◽  
Evoked Responses ◽  
Response Patterns ◽  
Stimulus Parameter ◽  
Auditory Responses ◽  
Stimulus Repetition Rate

A special purpose analog computer system was used to measure evoked auditory responses in children and adults. The responses were studied as a function of stimulus intensity, electrode placement, monaural-binaural stimulus presentation, and stimulus repetition rate. The purpose of the study was to evaluate the use of a summing computer system as a device to assess hearing in children and adults. Consistent evoked responses were obtained near threshold levels. Evoked response patterns vary in different age groups, and the pattern is modified by changes in stimulus parameter and electrode placement. Results suggest that a summing computer may hold real promise as a tool for providing information concerning auditory function.

Analog Simulation of Rigid Link Mechanisms

1967 ◽  
Vol 89 (2) ◽  
pp. 199-204 ◽  
Author(s):  
R. F. Timm
Keyword(s):  
Analog Circuit ◽  
Analog Computer ◽  
Analog Simulation ◽  
Rigid Link ◽  
Four Bar Linkage

This paper describes a procedure for simulating rigid link mechanisms on an analog computer. The computer circuit enables one to record all kinematic variables, i.e., displacements, velocities, and accelerations, for any point on the mechanism using conventional, commercially available computing elements. Also included in the paper is a scaled analog circuit for simulating velocities and displacements for the four-bar linkage, along with records of these parameters from the author’s simulation.

Some Recent Results in Quiescent Prominence Spectrometry

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman
Keyword(s):  
Real Time ◽  
Computer System ◽  
Spectral Response ◽  
Absolute Intensity ◽  
Solar Observatory ◽  
Target Size ◽  
Small Target ◽  
Signal Averaging ◽  
Quiescent Prominence

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.

Remote real-time computer system for medical research and diagnosis

JAMA ◽  
1966 ◽  
Vol 196 (11) ◽  
pp. 967-972
Author(s):  
J. F. Dickson
Keyword(s):  
Medical Research ◽  
Real Time ◽  
Computer System
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