نتایج جستجو برای: offs

تعداد نتایج: 17661  

Journal: :Molecular Systems Biology 2010

Journal: :Journal of the American College of Cardiology 2011

Journal: :Environmental Health Perspectives 1996
D Taylor

P roteomics is defined as the protein complement of the genome and involves the complete analysis of all the proteins in a given sample [1,2]. Several technologies are involved, and numerous questions concerning the proteins are addressed. What proteins are contained in a biological sample? At what concentration do the proteins exist? How do protein expression levels alter in different samples?...

2011
Elizabeth C. Olson Karl R. Haapala Gül E. Okudan Kremer

A method is introduced to incorporate sustainability considerations in the early design stages, while simultaneously accounting for supply chain factors, such as cost and lead time. Overall, this work is our first step in understanding the trade-offs between sustainability metrics and more traditional supply chain performance metrics (i.e., cost and lead time). Based on our understanding of the...

2016
Daniel A. Peterson Nate B. Hardy Benjamin B. Normark Daniel Peterson

Most plant-feeding insects are ecological specialists restricted to one or a few closely related host-plant species. A long-standing hypothesis asserts that natural selection favors host specialization because of trade-offs between performance on alternative hosts, yet empirical evidence for such tradeoffs is scarce. Here we assess trade-offs between adaptations to alternative hosts over macroe...

Journal: :The Journal of experimental biology 2014
Robbie S Wilson Amanda C Niehaus Gwendolyn David Andrew Hunter Michelle Smith

Why are performance trade-offs so rarely detected in animals when their underlying physiological basis seems so intuitive? One possibility is that individual variation in health, fitness, nutrition, development or genetics, or 'individual quality', makes some individuals better or worse performers across all motor tasks. If this is the case, then correcting for individual quality should reveal ...

2017
Jill E Schneider Pierre Deviche

Life history strategies are composed of multiple fitness components, each of which incurs costs and benefits. Consequently, organisms cannot maximize all fitness components simultaneously. This situation results in a dynamic array of trade-offs in which some fitness traits prevail at the expense of others, often depending on context. The identification of specific constraints and trade-offs has...

2005
Adán Cabello John Calsamiglia

The absent-minded driver’s problem illustrates that probabilistic strategies can give higher pay-offs than deterministic ones. We show that there are strategies using quantum entangled states that give even higher pay-offs, both for the original problem and for the generalized version with an arbitrary number of intersections and any possible set of pay-offs.  2005 Elsevier B.V. All rights res...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2009
Christine Holdredge Mark D Bertness Andrew H Altieri

Die-offs of cordgrass are pervasive throughout western Atlantic salt marshes, yet understanding of the mechanisms precipitating these events is limited. We tested whether herbivory by the native crab, Sesarma reticulatum, is generating die-offs of cordgrass that are currently occurring on Cape Cod, Massachusetts (U.S.A.), by manipulating crab access to cordgrass transplanted into die-off areas ...

2010
Adam Beautement David J. Pym

We develop an ontological account of information security architectures that is inspired by economic models of trade-offs between confidentiality, integrity, and availability. Our approach clarifies the nature of the trade-offs by making a clear distinction between declarative and operational concepts in security. We integrate this approach with a semantically justified mathematical systems mod...

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