Results 31 to 40 of about 3,005 (232)
On the calculation of transitive reduction—closure of orders
Discrete Mathematics, 1993 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Michel Habib +2 more
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Approximating Transitive Reductions for Directed Networks [PDF]
, 2009 We consider minimum equivalent digraph problem, its maximum optimization variant and some non-trivial extensions of these two types of problems motivated by biological and social network applications. We provide $\frac{3}{2}$-approximation algorithms for all the minimization problems and 2-approximation algorithms for all the maximization problems ...
Piotr Berman +2 more
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The dimensional reduction transition [PDF]
Nuclear Physics B, 1985 Abstract If there are more than four space-time dimensions, dimensions small today may have been dynamically important in the evolution of the early universe. The transition to four space-time dimensions may have produced physically significant phenomena observable today.
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Global Ecology and Conservation, 2014 Overpopulation of African elephants (Loxodonta africana) in fenced reserves in South Africa is becoming increasingly problematic to wildlife managers.
L.S. Doughty +4 more
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Internal representation of hierarchical sequences involves the default network
BMC Neuroscience, 2010 Background The default network is a set of brain regions that exhibit a reduction in BOLD response during attention-demanding cognitive tasks, and distinctive patterns of functional connectivity that typically include anti-correlations with a fronto ...
Rogers Baxter P +2 more
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The PRIMA Thesaurus for Materials Science and Engineering
Advanced Engineering Materials, EarlyView.The PRIMA Thesaurus is a structured vocabulary designed to improve how materials science data is described and shared. Developed with input from multiple experts, it enables clear documentation of research workflows, data exchange, and reuse across platforms.
Rossella Aversa +8 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Digitalizing electroplating requires both domain knowledge and interoperability. This work introduces PlatOn, a domain ontology for trivalent chromium plating and coating characterization, and a hybrid pipeline that aligns it to a mid‐level reference ontology by combining eight similarity metrics with language model reasoning. Expert‐validated mappings
Janik Harter +10 more
wiley +1 more source
Transitive reduction of a rectangular boolean matrix
Discrete Applied Mathematics, 1984 This paper deals with simplification of rectangular Boolean matrices of zeros and ones. For x,y whose values are zero or one, the following operations are defined \(x+y=\max (x,y), x\Theta y=\max (0,x-y)\) and for \(m\times n\) Boolean matrices A,B, \(A\Theta\) B and \(A\leq B\) are defined elementwise.
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Agribusiness, EarlyView.ABSTRACT The U.S. Department of Agriculture's (USDA) World Agricultural Supply and Demand Estimates (WASDE) play a central role in how agricultural commodity markets process information about supply, demand, and prices. This study examines how global and domestic shocks, as well as policy interventions, are reflected in the similarity of WASDE ...
Zhining Sun +2 more
wiley +1 more source
Journal of Clinical and Translational Science, 2019 OBJECTIVES/SPECIFIC AIMS: This study will elucidate what percent of unnecessary ED visits for chronic conditions can be reduced by extant telemedicine devices, and which telemedicine devices can yield the greatest reduction in unnecessary ED visits for ...
Simeon Abiola, Kimberly Arcoleo
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