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Full-Text Articles in Physical Sciences and Mathematics
Intermediate Rings Between A Local Domain And Its Completion, William Heinzer, Christel Rotthaus, Sylvia Wiegand
Intermediate Rings Between A Local Domain And Its Completion, William Heinzer, Christel Rotthaus, Sylvia Wiegand
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
We consider the structure of certain intermediate domains between a local Noetherian domain Rand an ideal-adic completion R* of R that arise as the intersection of R* with a field containing R. In the case where the intersection domain A can be expressed as a directed union of localized polynomial extension rings of R, the computation of A is easier. We examine conditions for this to happen. We also present examples to motivate and illustrate the concepts considered.
Development And Evaluation Of A Standard Weight (WS) Equation For Blue Catfish, Maurice I. Muoneke, Kevin L. Pope
Development And Evaluation Of A Standard Weight (WS) Equation For Blue Catfish, Maurice I. Muoneke, Kevin L. Pope
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Using a data set composed of 33 populations from six states, we employed the regression-linepercentile technique to develop a standard weight equation for blue catfish Ictalurus furcatus and validated it with an independent data set composed of 43 populations from 10 states. The equation is log10Ws=-6.067+ 3.400 log10TL, where Ws is standard weight in grams and TL is total length in millimeters. The English-unit equivalent (pounds and inches) is log10Ws=-3.950+ 3.400 log10TL. The equation is valid for blue catfish 160 mm (approximately 6 in) TL and longer. …
Body Mass Patterns Predict Invasions And Extinctions In Transforming Landscapes, Craig R. Allen, Elizabeth A. Forys, C. S. Holling
Body Mass Patterns Predict Invasions And Extinctions In Transforming Landscapes, Craig R. Allen, Elizabeth A. Forys, C. S. Holling
Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications
Scale-specific patterns of resource distribution on landscapes entrain attributes of resident animal communities such that species body-mass distributions are organized into distinct aggregations. Species within each aggregation respond to resources over the same range of scale. This discontinuous pattern has predictive power: invasive species and extinct or declining species in landscapes subject to human transformation tend to be located at the edge of body-mass aggregations (P < 0.01), which may be transition zones between distinct ranges of scale. Location at scale breaks affords species great opportunity, but also potential crisis.