Results 171 to 180 of about 1,277 (217)

Effective placement of chips on a shuttle mask

SPIE Proceedings, 2003
An effective algorithm was developed to prepare a mask layout from several chip databases. The underlying idea is solving so called “strip packing” problems, which actually have been very common in many industries. A major difference between applications is the definition of cost function used in a particular packing problem.
Shih-Ying Chen, Eric C. Lynn
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Energetics of Shuttle Runs: The Effects of Distance and Change of Direction

International Journal of Sports Physiology and Performance, 2014
Shuttle runs can be used to study the physiological responses in sports (such as basketball) characterized by sprints (accelerations/decelerations) and changes of direction.Purpose:To determine the energy cost (C) of shuttle runs with different turning angles and over different distances (with different acceleration/deceleration patterns).Methods:Nine ...
ZAMPARO, Paola, Zadro I., Lazzer S., BEATO, MARCO, Sepulcri L.   +4 more
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Effect of Surface Cooling and Roughness on Transition for the Shuttle Orbiter

Journal of Spacecraft and Rockets, 1977
An analysis of roughness-induced boundary-layer transition examines the sensitivity of the Orbiter boundary-layer transition criteria to surface cooling, to surface roughness, and to the assumed flow-field model. The experimental data were obtained using a 0.0175-scale Orbiter with surface roughness represented by misaligned heat-shield tiles for ...
J. BERTIN, E. IDAR, III, W. GOODRICH
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Effect of the Shuttle contaminant environment on a sensitive infrared telescope

Applied Optics, 1977
A sensitive ir telescope on the Space Shuttle Orbiter will be limited in its performance by fluctuations in the ir radiation from the natural environment and the contaminant atmosphere. Models of the Orbiter's contaminant atmosphere were used to predict its spectral radiance from 3 microm to 300 microm.
J P, Simpson, F C, Witteborn
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Effect of lesions in hippocampal subareas on rat shuttle behavior

Physiology & Behavior, 1979
Abstract Rats with lesions in subareas CA3 and CA4/dentate gyrus of the dorsal hippocampus were submitted to four different experimental situations in a shuttlebox. Animals with CA3 lesions made less shuttle responses to a buzzer than sham-operated or intact control animals in two of the tests, in which the buzzer was paired (i.e., given contiguous ...
Calderazzofilho, L. S., Cavalheiro, E. A., IZQUIERDO, I   +2 more
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Environmental effects of Shuttle launch and landing

Shuttle Environment and Operations Meeting, 1983
The areas of concern were the toxic exhaust cloud produced by Shuttle launch, the effect of launch operations on the total ecology, and the sonic boom produced by Orbiter re-entry. Wet acidic dust fell from the exhaust cloud for about ten minutes after launch.
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Effect of gap flow on shuttle heat transfer

Cryogenics, 2000
A comprehensive analysis is performed to investigate the effect of the oscillating flow of gap fluid on the shuttle heat transfer in reciprocating expanders. For a sinusoidal motion of displacer over cylinder having an axial temperature gradient, a new exact expression for shuttle heat transfer is derived from the analytical solution of the velocity ...
Ho-Myung Chang, Dae-Jong Park, Sangkwon Jeong   +2 more
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Shuttle Environment Effects On Coated Mirrors

SPIE Proceedings, 1987
oated mirrors used in optical instrument payloads designed for use at ultraviolet wave-lengths face the risk that molecular contamination, in small amounts, can degrade reflectivity. This can be particularly damaging if a combination of solar ultraviolet radiation and organic gases are present, resulting in photopolymerization of hydrocarbon tars onto ...
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Effects of Delta Wing Separation on Shuttle Dynamics

Journal of Spacecraft and Rockets, 1973
The unsteady aerodynamics of a candidate delta-wing shuttle orbiter have been investigated. Three potentially dangerous flow separation phenomena involving the delta wing have been identified, each of which could seriously compromise the flight dynamics.
J. PETER REDING, LARS E. ERICSSON
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Reliability of Space-Shuttle Pressure Vessels with Random Batch Effects

Technometrics, 2000
In this article we revisit the problem of estimating the joint reliability against failure by stress rupture of a group of fiber-wrapped pressure vessels used on Space-Shuttle missions. The available test data were obtained from an experiment conducted at the U.S.
Alan H. Feiveson, Pandurang M. Kulkarni
openaire   +1 more source