منابع مشابه
Hull Form Optimization for Monohull Ships
A study was carried out to investigate methods and to determine the "optimum" hull form for monohull ships, based upon several weighted criteria. The main product of this study is a hull form optimization program. Propulsion power minimization is the primary focus of the program, although simplified. seakeeping and weight/cost issues can also be studied with the existing program. The program us...
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Shipping has contributed strongly to biological invasions in coastal ecosystems, transferring species in ballast tanks and on exposed underwater surfaces (hulls). A long history exists that documents biota associated with ships’ hulls, including some recent analyses of modern ships, but relatively little is known about the associated risks of invasion. In general, the likelihood of invasion is ...
متن کاملConvex hull for intersections of random lines
Numerous problems can be reduced to finding the convex hull of a set of points – halfspace intersection, Delaunay triangulation, etc. An algorithm for finding the convex hull in the plane, known as Graham scan [5], achieves an O(n log n) running time. This algorithm is optimal in the worst case. Another algorithm [6] for the same problem runs in O(nh) time, where h is the number of hull points,...
متن کاملThe Stream-stream Collision after the Tidal Disruption of a Star around a Massive Black Hole
A star can be tidally disrupted around a massive black hole. It has been known that the debris forms a precessing stream, which may collide with itself. The stream collision is a key process determining the subsequent evolution of the stellar debris: if the orbital energy is efficiently dissipated, the debris will eventually form a circular disk (or torus). In this paper, we have numerically st...
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An arrangement of n lines chosen at random from R has a vertex set whose convex hull has constant (expected) size.
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ژورنال
عنوان ژورنال: Journal of Zosen Kiokai
سال: 1965
ISSN: 1884-2062
DOI: 10.2534/jjasnaoe1952.1965.118_108