منابع مشابه
Passing current through touching molecules.
The charge flow from a single C(60) molecule to another one has been probed. The conformation and electronic states of both molecules on the contacting electrodes have been characterized using a cryogenic scanning tunneling microscope. While the contact conductance of a single molecule between two Cu electrodes can vary up to a factor of 3 depending on electrode geometry, the conductance of the...
متن کاملConvex bodies passing through holes
For a given convex body, find a “small” wall hole through which the convex body can pass. This type of problems goes back to Zindler [14] in 1920, who considered a convex polytope which can pass through a fairly small circular holes. A related topic known as Prince Rupert’s problem can be found in [2]. Here we concentrate on the case when the convex body is a regular tetrahedron or a regular n-...
متن کاملRegular Simplices Passing through Holes
What is the smallest circular or square wall hole that a regular tetrahedron can pass? This problem was solved by Itoh–Tanoue– Zamfirescu [8]. Then, we settled the case of equilateral triangular hole in [1]. Motivated by these results, we consider the corresponding problems in higher dimensions. Among other results, we determine the minimum (n−1)-dimensional ball hole that a unit regular n-simp...
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The transportation of petroleum represents one of the most strategically important circulations of resources in the global economy. Its role cannot be overstated. Yet, petroleum has become a “strategically invisible” commodity as its flow has been continuous with limited, but eye-opening, disruptions such as the First Energy Crisis is 1973. Petroleum supplies are virtually taken for granted. Si...
متن کاملShip Routing Through Altimetry-Derived Ocean Currents
We investigate the potential of strategic ship routing through dynamic currents derived from satellite altimetry by simulating current patterns in a dynamic Gulf Stream region to reflect present and improved current estimation capabilities, using dynamic programming to determine approximately 3-day routes through the current patterns, and estimating relative fuel savings that would be obtained ...
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ژورنال
عنوان ژورنال: TRANSPORT
سال: 2010
ISSN: 1648-4142,1648-3480
DOI: 10.3846/transport.2010.42