منابع مشابه
Harbor/Mooring Harbor Defense Concept
The long-term goal of this work is an integrated defense system that provides protection of Navy assets, while in port, from the threat posed by covert swimmers. The general concept is to hail, deter, and/or incapacitate the threat by directing a controlled level of low-frequency acoustic energy at the target location. At the system level, the concept requires combining elements of target detec...
متن کاملSinusoid=light bar+dark bar?
A sinusoidal grating can be viewed as a series of light and dark bars. Here we measure the contrast discrimination thresholds for light and dark bars individually, and find that the contrast discrimination thresholds for the whole sinusoid can be explained as ideal summation of the light and dark bar thresholds. We propose a model for light bar, dark bar, and sinusoidal contrast discrimination ...
متن کاملCold Spring Harbor Laboratory.
Vice Chairmen Mr. and Mrs. W. Dillaway Ayres, Jr. Dr. Joanne Berger-Sweeney Mr. and Mrs. Hans E.R. Bosch Mr. and Mrs. Matthew J. Bruderman Mr. and Mrs. Eric Carlstrom Mr. and Mrs. James J. Celestino Mr. and Mrs. Edward A. Chernoff Mr. and Mrs. Charles “Casey” Cogut Mr. and Mrs. Michel David-Weill Ms. Florence A. Davis Mr. and Mrs. Nelson DeMille Mr. and Mrs. John M. Desmarais Mr. Martin Elias M...
متن کاملFloating-Harbor syndrome.
Many syndromes are named in an eponymous fashion after the original authors, or occasionally after the original patients, but the name of this syndrome is derived from the hospitals where the first two patients were described. In 1973 Pelletier and Feingold' described a boy seen at the Boston Floating Hospital with short stature, delayed speech development, and a striking facial appearance. A f...
متن کاملToward autonomous harbor surveillance
In this thesis we address the problem of drift-free navigation for underwater vehicles performing harbor surveillance and ship hull inspection. Maintaining accurate localization for the duration of a mission is important for a variety of tasks, such as planning the vehicle trajectory and ensuring coverage of the area to be inspected. Our approach uses only onboard sensors in a simultaneous loca...
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ژورنال
عنوان ژورنال: Journal of the Franklin Institute
سال: 1889
ISSN: 0016-0032
DOI: 10.1016/0016-0032(89)90220-2