1,530 research outputs found
Radio astronomy Explorer-B in-flight mission control system development effort
A description is given of the development for the Mission Analysis Evaluation and Space Trajectory Operations (MAESTRO) program to be used for the in-flight decision making process during the translunar and lunar orbit adjustment phases of the flight of the Radio Astronomy Explorer-B. THe program serves two functions: performance and evaluation of preflight mission analysis, and in-flight support for the midcourse and lunar insertion command decisions that must be made by the flight director. The topics discussed include: analysis of program and midcourse guidance capabilities; methods for on-line control; printed displays of the MAESTRO program; and in-flight operational logistics and testing
Book Review: Backyard Wilderness
This book review examines David Knibb\u27s Backyard Wilderness
Attempt to Monopolize: Dangerous Probability of Success as an Obstacle to Enforcing Section 2 of the Sherman Act
This Comment analyzes the conflicting definitions of attempt to monopolize as applied to the Sherman Act. First, the Comment outlines the majority position requiring proof of dangerous probability of success in an attempt to monopolize case under section 2 of the Sherman Act. Next, the Comment examines the minority position and finds that it raises countervailing concerns that warrant eliminating the dangerous probability of success requirement. Finally, this Comment concludes that the dangerous probability of success element adds nothing but confusion to the attempt to monopolize analysis and should therefore be eliminated
Disk-Loss and Disk Renewal Phases in Classical Be Stars II. Detailed Analysis of Spectropolarimetric Data
In Wisniewski et al. 2010, paper I, we analyzed 15 years of spectroscopic and
spectropolarimetric data from the Ritter and Pine Bluff Observatories of 2 Be
stars, 60 Cygni and {\pi} Aquarii, when a transition from Be to B star
occurred. Here we anaylize the intrinsic polarization, where we observe
loop-like structures caused by the rise and fall of the polarization Balmer
Jump and continuum V-band polarization being mismatched temporally with
polarimetric outbursts. We also see polarization angle deviations from the
mean, reported in paper I, which may be indicative of warps in the disk, blobs
injected at an inclined orbit, or spiral density waves. We show our ongoing
efforts to model time dependent behavior of the disk to constrain the
phenomena, using 3D Monte Carlo radiative transfer codes.Comment: 2 pages, 6 figures, IAU Symposium 27
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