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Displaying 63626 - 63650 of 74253

Multiple Programs in One UNIX Process

September 1, 1987
Author(s)
Don E. Libes
A small operating system (XINU) was ported to UNIX 4.2BSD. The entire operating system runs as a single UNIX process. The code is approximately 1000 lines of C (including comments) and 6 lines of assembler. All of the code is user-level, and thus presents

Viscosity and density of two alkali metal mixtures

September 1, 1987
Author(s)
Robert Berg, Michael Moldover, Savely Rabinovich, Alexander Voronel
We have measured the density and viscosity of a K-Cs binary mixture and a Na-K-Cs ternary mixture from their crystallisation points (234 K and 199 K respectively) to 300 K. Extrapolations of the fluidity data indicate that the effective glass temperatures

Free-carrier relaxation dynamics in the normal state on sintered YBa2Cu3O7-y

August 1, 1987
Author(s)
Stephen E. Russek, P. E. Sulewski, T. W. Noh, J. T. McWhirter, A.J. Sievers, R A. Buhrman, C S. Jee, J. E. Crow, R. E. Saloman, G. Myer
The conductivity of YBa2Cu3O7-y in the normal state has been obtained from a measurement of the reflectivity over a wide frequency range. The product of the Drude model parameters Wpt

Vapor Compression Heat Pump Cycle With Desorber/Absorber Heat Exchange

August 1, 1987
Author(s)
R Radermacher
In this paper, a special version of a vapor compression heat pump cycle with solution circuit is introduced. In this cycle, the gliding temperature intervals are deliberately chosen so large, that the highest temperature in the desorber (evaporator) is

Note on Real Time Parametric Cubic Segment Curve Generation

July 31, 1987
Author(s)
M Roche, W Li
As coordinate values are determined, we wish to add them to an array and apply an interpolation procedure to the new coordinate values of the array. That is, as the sequence is being increased, it will be interpolated by a cubit fit. We will exhibit two

RCS Application Example: Tool Changing on a Horizontal Machining Center

July 31, 1987
Author(s)
J Fiala, Albert J. Wavering
A large six-axis manipulator performs material handling tasks for a horizontal machining center in the National Bureau of Standards' Automated Manufacturing Research Facility. The manipulator is controlled by the Real-time Control System (RCS), a

A Distributed Database Architecture for an Integrated Manufacturing Facility

July 1, 1987
Author(s)
V Krishnamurthy, Stanley Su, H Lam, Mary Mitchell, Edward J. Barkmeyer Jr.
A typical manufacturing facility uses a set of heterogeneous computer systems to support various design, planning, and manufacturing activities. These systems usually consist of different hardware (computers, NC machines, robots and workstations), software
Displaying 63626 - 63650 of 74253
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