منابع مشابه
Cubic leaves
We determine those cubic graphs with at most 22 vertices which are leaves of partial triple systems. As a first step towards a complete characterization of cubic leaves, we also show several classes of cubic graphs to be leaves.
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One of the main problems of rendering outdoor scenes in real time is the representation of trees and plants. The modeling tools for vegetal species generate polygonal models with such a great geometric complexity that they need efficient techniques for achieving an interactive visualization. In this article we present a LOD model based on the geometric representation of leaves that eliminates b...
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There is a growing interest in simulating natural phenomena in computer graphics applications. Animating natural scenes in real time is one of the most challenging problems due to the inherent complexity of their structure, formed by millions of geometric entities, and the interactions that happen within. An example of natural scenario that is needed for games or simulation programs are forests...
متن کاملMatric potentials of leaves.
A pressure chamber was used to measure matric potentials of frozen and thawed leaves. Significant matric potentials were demonstrated in sunflower (Helianthus annuus L.), yew (Taxus cuspidata Sieb. and Zucc.), and rhododendron (Rhododendron roseum Rehd.). Matric potentials were particularly negative in rhododendron and were correlated with the amount of cell wall present and with the volume of ...
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We prove that a codimension one foliation of an orientable paracompact manifold has at most a countable number of nonorientable leaves. We also give an example of a codimension one foliation of a compact orientable manifold with an infinite number of nonorientable leaves. Introduction. The purpose of this paper is to investigate the occurrence of nonorientable leaves in a codimension one foliat...
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ژورنال
عنوان ژورنال: New Blackfriars
سال: 1921
ISSN: 0028-4289,1741-2005
DOI: 10.1111/j.1741-2005.1921.tb02833.x