نتایج جستجو برای: upward
تعداد نتایج: 13602 فیلتر نتایج به سال:
rade control structures are used to control bed erosion in steep small rivers mostly in the mountains. scour downstream of this structure can lead to failure. over the past years, the effect of different variables on this phenomena have been studied, however the effect of upward seepage which is common due to head difference of the banks water table or water surface level between the upstream a...
Recently, the DBpedia community has experienced an immense increase in activity and we believe, that the time has come to explore the connection between DBpedia & Natural Language Processing (NLP) in a yet unprecedented depth. DBpedia has a long-standing tradition to provide useful data as well as a commitment to reliable Semantic Web technologies and living best practices. As the extraction of...
The movement of unconsolidated materials near the Earth’s surface is often driven by disturbances that occur at a range of spatial and temporal scales. The nature of these disturbances ranges from highly variable, such as tree turnover, to periodic and predictable, such as frost heave or creep. To explore the effect of probabilistic disturbances on surface processes, we formulated a granular cr...
Giordano, Liotta and Whitesides [1] developed an algorithm that, given an embedded planar st-digraph and a topological numbering ρ of its vertices, computes in O(n) time a ρ-constrained upward topological book embedding with at most 2n−4 spine crossings per edge. The number of spine crossings per edge is asymptotically worst case optimal. In this poster, we present improved results with respect...
The upward crossing number problem asks for a drawing of the graph into the plane with the minimum number of edge crossings where the edges are drawn as monotonously increasing curves w.r.t. the y-axis. While there is a large body of work on solving this central graph drawing problem heuristically, we present the first approach to solve the problem to proven optimality. Our approach is based on...
A three-dimensional grid drawing of a graph is a placement of the vertices at distinct points with integer coordinates, such that the straight line segments representing the edges do not cross. Our aim is to produce three-dimensional grid drawings with small bounding box volume. Our first main result is that every nvertex graph with bounded degeneracy has a three-dimensional grid drawing with O...
The threat of comparison to intellectual superiors evokes a stress response, which, evidence suggests, depletes working memory capacity . Expectation of social comparison has been shown to increase physiological and perceived stress in individuals, especially in upward comparisons 7 & . Upward comparison is comparing oneself to someone the individual deems superior to themselves. In the present...
Comparing one's body to those of individuals perceived as more attractive is common among college women, and has been associated with increases in body dissatisfaction and disordered eating. Not all college women are vulnerable to the negative influence of these upward body comparisons; however, little is known about characteristics that may distinguish more vulnerable women. Coping styles, whi...
The assumption that an AEC is tame is a powerful assumption permitting development of stability theory for AECs with the amalgamation property. Lately several upward categoricity theorems were discovered where tameness replaces strong set-theoretic assumptions. We present in this article two sufficient conditions for tameness, both in form of strong amalgamation properties that occur in nature....
This paper studies the range of application of the upward separation technique that has been introduced by Hartmanis to relate certain structural properties of polynomial-time complexity classes to their exponential-time analogs and was rst applied to NP [Har83]. Later work revealed the limitations of the technique and identi ed classes defying upward separation. In particular, it is known that...
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