نتایج جستجو برای: upward

تعداد نتایج: 13602  

2011
Hoi-Ming Wong

Drawing directed graphs has many applications and occurs whenever a natural flow of information is to be visualized. Given a directed acyclic graph (DAG) G, we are interested in an upward drawing of G, that is, a drawing of G in which all arcs are drawn as curves that are monotonically increasing in the vertical direction. Besides the upward property, it is desirable that the number of arc cros...

Journal: :Fire Safety Science 1986

2011
Markus Geyer Michael Kaufmann Tamara Mchedlidze Antonios Symvonis

We study the problem of Upward Point-Set Embeddability, that is the problem of deciding whether a given upward planar digraph D has an upward planar embedding into a point set S. We show that any switch tree admits an upward planar straight-line embedding into any convex point set. For the class of k-switch trees, that is a generalization of switch trees (according to this definition a switch t...

Journal: :Math. Log. Q. 2013
Gábor Sági Zalán Gyenis

By a celebrated theorem of Morley, a theory T is א1-categorical if and only if it is κ-categorical for all uncountable κ. In this paper we are taking the first steps towards extending Morley’s categoricity theorem “to the finite”. In more detail, we are presenting conditions, implying that certain finite subsets of certain א1-categorical T have at most one n-element model for each natural numbe...

2009
Markus Chimani Carsten Gutwenger Petra Mutzel Hoi-Ming Wong

Abstract. Recently, we have presented a new practical method for upward crossing minimization [4], which clearly outperformed existing approaches for drawing hierarchical graphs in that respect. The outcome of this method is an upward planar representation (UPR), a planarly embedded graph in which crossings are represented by dummy vertices. However, straight-forward approaches for drawing such...

Journal: :Journal of Medical Toxicology 2014

Journal: :Journal of the ACM 2017

Journal: :ACS Chemical Neuroscience 2016

Journal: :international journal of health policy and management 2016
edgar h. schein

this comment argues that instead of worrying about the pros and cons of whistleblowing one should focus on the more general problem of the failure of upward communication around safety and quality problems and consider what leaders and managers must do to stimulate subordinates to communicate and reward such communication. the article analyzes why safety failures occur and introduces the concep...

Journal: :Mathematical Logic Quarterly 2013

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید