Modelling of quantitative DTA equipment I. Electric analog approach

1979 ◽  
Vol 15 (1) ◽  
pp. 93-100 ◽  
Author(s):  
K. Seybold ◽  
T. Meisel ◽  
T. Cserfalvi
Keyword(s):  
Analog Approach ◽  
Electric Analog ◽  
Quantitative Dta

An Electric Analog Approach to Bog Hydrology

Ground Water ◽  
1976 ◽  
Vol 14 (1) ◽  
pp. 30-35 ◽  
Author(s):  
John E. Sander
Keyword(s):  
Analog Approach ◽  
Electric Analog

Beam-Vibration Analysis With the Electric-Analog Computer

1950 ◽  
Vol 17 (1) ◽  
pp. 13-26
Author(s):  
G. D. McCann ◽  
R. H. MacNeal
Keyword(s):  
Steady State ◽  
Vibration Analysis ◽  
Degrees Of Freedom ◽  
Analog Computer ◽  
Accurate Solution ◽  
Rotary Inertia ◽  
Beam Vibration ◽  
Lumped Constant ◽  
Electric Analog

Abstract The authors have developed a true dynamic analogy which has been used with the Cal Tech electric-analog computer for the rapid and accurate solution of both steady-state and transient beam problems. This analogy has been found well suited to the study of beams having several coupled degrees of freedom, including torsion, simple bending, and bending in a plane. Damping and effects such as rotary inertia may be handled readily. The analogy may also be used in the study of systems involving combined beams and “lumped-constant” elements.

Rails on Elastic Foundations Under the Influence of High-Speed Traveling Loads

1953 ◽  
Vol 20 (1) ◽  
pp. 13-22
Author(s):  
H. E. Criner ◽  
G. D. McCann
Keyword(s):  
High Speed ◽  
Narrow Range ◽  
Analog Computer ◽  
Point Load ◽  
Specific Design ◽  
Computer Technique ◽  
Elastic Foundations ◽  
Constant Magnitude ◽  
Electric Analog ◽  
Track Beam

Abstract This paper presents an electric-analog-computer technique for the analysis of beams on elastic foundations that are subjected to traveling loads. This method is applicable to the study of such conditions as nonuniform beams, load magnitude and velocity variations, and such nonlinear conditions as the beam leaving contact with the foundation for upward deflections. A general set of dimensionless solutions is presented for the specific case of a point load of constant magnitude and velocity traveling over an infinite uniform linear track beam. These show high values of deflection and moment for a rather narrow range of velocity above and below the critical velocities producing peak disturbances. It was found that quite high accelerations are required to produce significantly less disturbance than in the constant velocity case. A range of nonlinear track-bouncing conditions was studied in connection with a specific design problem. For none of these cases could more severe conditions be produced than indicated by the linear solutions.

scholarly journals Method of cryptologic data transformations

2020 ◽  
Keyword(s):  
Infinite Number ◽  
High Speed ◽  
Communication Theory ◽  
Quantum Computer ◽  
Quantitative Information ◽  
Future Research ◽  
Basic Work ◽  
Analog Approach ◽  
Technical Issues ◽  
Discrete Theory

Countering a quantum computer in the process of illegal ultra-high-speed decryption of messages is technically feasible. Information owner must oppose the competitor's computer with tasks, the solution of which requires an infinite number of operations during decryption. For example, the dependence of functions on an infinite number of informative features. The owner encrypts by integrating the functions, the recipient decrypts by solving the integral equations. It is not a discrete but an analog approach that prevails here. The basis for the implementation of this approach was created by Polish scientists. Mathematician Stefan Banach (1892-1945), who created modern functional analysis, and Marian Mazur (1909-1983), the author of " The Qualitative Theory of Information". Their theory was created in contrast with the "Quantitative Information Theory". Cryptologists who have devoted their whole lives to improving the "discrete" theory and found themselves close to power (and finance), try not to recall that Claude Shannon in his basic work "Communication Theory of Secrecy Systems" more than once emphasized the discrete focus of his developments anticipating future research on the specific limitations of his work adapted to the communication theory. Forgetting about the unlimited speeds and amounts of memory of quantum computers the orthodox talk about redundancy and further purely technical issues, including administrative leverages for counteracting against opponents. It is impossible to stop the progress of science. Experiments have shown the reality of creating such post-quantum-level cryptographic systems.

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