منابع مشابه
Improved Alternative Route Planning
We present improved methods for computing a set of alternative source-to-destination routes in road networks in the form of an alternative graph. The resulting alternative graphs are characterized by minimum path overlap, small stretch factor, as well as low size and complexity. Our approach improves upon a previous one by introducing a new pruning stage preceding any other heuristic method and...
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Vibrio fischeri is a bioluminescent bacterium that enters into a symbiosis with the bobtail squid Euprymna scolopes. The bacterium colonizes a specialized light organ, in which it generates light that might help the squid to hide its silhouette from animals beneath it. Previous studies have shown that the host nitric oxide (NO) synthase is active during colonization, suggesting that V. fischeri...
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We present an alternative derivation of the gravitational field equations starting from the Newton’s law, which intrinsically brings in observer dependence in the theory. Projecting the Riemann curvature tensor appropriately as fit for an observer, taking a cue from Poisson’s equation, the Einstein’s equations immediately follow. Our derivation naturally adapts to Lovelock gravity theories wher...
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A rodenticide is any product able to kill rodents, mice, gophers, squirrels and other small animals. They represent a diverse group of chemicals bearing little or no relationship to one another – apart from their current or historic use as rodenticides. Anticoagulant rodenticides [1] of the indanedione type (Fig. 1) are commonly used for the control of mice, rats and other rodents. The most imp...
متن کاملAlternative Route Graphs in Road Networks
Every human likes choices. But today’s fast route planning algorithms usually compute just a single route between source and target. There are beginnings to compute alternative routes, but there is a gap between the intuition of humans what makes a good alternative and mathematical definitions needed for grasping these concepts algorithmically. In this paper we make several steps towards closin...
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ژورنال
عنوان ژورنال: Nature Reviews Molecular Cell Biology
سال: 2005
ISSN: 1471-0072,1471-0080
DOI: 10.1038/nrm1692