نتایج جستجو برای: breakdown

تعداد نتایج: 30163  

2008
R. M. Lark

The effect of outliers on estimates of the variogram depends on how they are distributed in space. The ‘spatial breakdown point’ is the largest proportion of observations which can be drawn from some arbitrary contaminating process without destroying a robust variogram estimator, when they are arranged in the most damaging spatial pattern. A numerical method is presented to find the spatial bre...

Journal: :Global change biology 2017
Jennifer J Follstad Shah John S Kominoski Marcelo Ardón Walter K Dodds Mark O Gessner Natalie A Griffiths Charles P Hawkins Sherri L Johnson Antoine Lecerf Carri J LeRoy David W P Manning Amy D Rosemond Robert L Sinsabaugh Christopher M Swan Jackson R Webster Lydia H Zeglin

Streams and rivers are important conduits of terrestrially derived carbon (C) to atmospheric and marine reservoirs. Leaf litter breakdown rates are expected to increase as water temperatures rise in response to climate change. The magnitude of increase in breakdown rates is uncertain, given differences in litter quality and microbial and detritivore community responses to temperature, factors t...

2001
Hans Peter Nilles

Gravity mediated supersymmetry breakdown originated from a study of gaugino condensation in a hidden sector. We review this mechanism of supergravity breakdown from the original formulation in the early eighties to its natural implementation in superstring theory and M-theory. In the latter case hidden and observable sector become separated geometrically and supersymmetry is broken dynamically ...

Journal: :Investigative ophthalmology & visual science 2008
Dimitra Skondra Kousuke Noda Lama Almulki Faryan Tayyari Sonja Frimmel Toru Nakazawa Ivana K Kim Souska Zandi Kennard L Thomas Joan W Miller Evangelos S Gragoudas Ali Hafezi-Moghadam

PURPOSE Azurocidin, released by neutrophils during leukocyte-endothelial interaction, is a main cause of neutrophil-evoked vascular leakage. Its role in the retina, however, is unknown. METHODS Brown Norway rats received intravitreal injections of azurocidin and vehicle control. Blood-retinal barrier (BRB) breakdown was quantified using the Evans blue (EB) dye technique 1, 3, and 24 hours aft...

2002
Al Wallash Larry Levit

The current vs. voltage and electrical breakdown behavior for devices with micron and sub-micron gaps between conductors is studied. The limitations of the well-known but often-misinterpreted Paschen curve are discussed. The little-known modified Paschen curve, that includes field emission effects so important in understanding breakdown behavior for devices with sub-micron gaps, is described. C...

2007
P. L. Davies

• The breakdown point plays an important though at times controversial role in statistics. In situations in which it has proved most successful there is a group of transformations which act on the sample space and which give rise to an equivariance structure. For equivariant functionals, that is those functionals which respect the group structure, a non-trivial upper bound for the breakdown poi...

Journal: :International Journal of Developmental and Educational Psychology. Revista INFAD de Psicología. 2017

2008
K. Huitu P. N. Pandita K. Puolamäki

We carry out a detailed analysis of the light Higgs bosons in supersymmetric leftright models (SLRM). This includes models with minimal particle content and those with additional Higgs superfields. We also consider models with non-renormalizable higher-dimensional terms. We obtain an upper bound on the mass of the lightest CP -even neutral Higgs boson in these models. The upper bound depends on...

Journal: :Expert Syst. Appl. 2011
Xiangbai Gu Zhiqiang Geng Wenxing Xu Qunxiong Zhu

Two new types of hierarchy probability cost analysis (HPCA) model incorporating money allocated is money spent (MAIMS) principle based on definite work breakdown structure (WBS) level for EPC (engineering, procurement and construction) projects are presented. The proposed models have skillfully solved dilemma to appropriate cost elements and maximize the efficiency of information for cost risk ...

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