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Displaying 63126 - 63150 of 74239

Message Authentication Code (MAC) Validation System: Requirements and Procedures

May 1, 1988
Author(s)
Miles E. Smid, Elaine B. Barker, David Balenson, Martha E. Haykin
The National Bureau of Standards Message Authentication Code (MAC) Validation System (MVS) tests message authentication devices for conformance to two data authentication standards: Federal Information Processing Standard Publication (FIPS PUB) 113,

Exploiting Computational Parallelism with a Hierarchical Robot Control System

April 29, 1988
Author(s)
John L. Michaloski, Thomas E. Wheatley, Ronald Lumia
Sequential machines do not provide enough computational perfomance for a real-time robot control system. Hierarchical structuring will be considered not only as a software development methodology, but also as a means for implementing a robot control system

Analysis of the Influence of Piston Effect on Elevator Smoke Control

April 1, 1988
Author(s)
J H. Klote
This paper is part of a joint project between the United States and Canada to evaluate the feasibility of using elevators for the evacuation of the handicapped during a fire. The transient pressures produced when an elevator car move in a shaft are a

Analysis of the Influence of Piston Effect on Elevator Smoke Control

April 1, 1988
Author(s)
J H. Klote
This paper is part of a joint project between the United States and Canada to evaluate the feasibility of using elevators for the evacuation of the handicapped during a fire. The transient pressures produced when an elevator car move in a shaft are a

Electron Spin Polarization Analyzers for Use with Synchrotron Radiation

April 1, 1988
Author(s)
Daniel T. Pierce, Robert Celotta, Michael H. Kelley, john unguris
The measurement of the spin polarization of photoelectrons emitted from a magnetic material is discussed. An important consideration is the acceptance phase space of the spin analyzer relative to the phase space of the photoemitted electrons to be measured

Exchange Asymmetry in Elastic Scattering of Electrons by Sodium Atoms

April 1, 1988
Author(s)
D H. Oza
Calculations of the exchange asymmetry in elastic scattering of electrons by sodium atoms are reported at incident electron energies of 10 and 54.4 eV. The close-coupling calculations are performed with the four lowest target states of the sodium atom. At

Experimental Evaluation of Two Refrigerant Mixtures in a Breadboard Air Conditioner

April 1, 1988
Author(s)
W. J. Mulroy, M Kauffeld, Mark O. McLinden, David Didion
An experimental, water-to-water, breadboard heat pump (that is one designed to be easily reconfigured) was constructed for comparison of pure R22 to the refrigerant mixtures R22/R114 and R13/R12. three evaporator configurations were extensively studied. In

Guide to Auditing for Controls and Security: A System Development Life Cycle Approach

April 1, 1988
Author(s)
Zella G. Ruthberg, Bonnie T. Fisher, William E. Perry, John W. Lainhart, James G. Cox, Mark Gillen, Douglas B. Hunt
This guide addresses auditing the system development life cycle (SDLC) process for an automated information system (AIS), to ensure that controls and security are designed and built into the system. The guide also presents a process for deciding which
Displaying 63126 - 63150 of 74239
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