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Displaying 63151 - 63175 of 74256

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

Process Planning for a Milling Machine From a Feature-Based Design

April 1, 1988
Author(s)
Thomas R. Kramer
In the Vertical Workstation (VWS) of the NBS Automated Manufacturing Research Facility, metal parts are machined automatically from a feature-based design. A simple two-and-a- half dimensional part may be designed and machined within an hour, allowing half
Displaying 63151 - 63175 of 74256
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