نتایج جستجو برای: partitioning factor
تعداد نتایج: 878019 فیلتر نتایج به سال:
The red-crowned crane (Grus japonensis (Statius Müller, 1776)) is a rare and endangered species that lives in wetlands. In this study, we used variance partitioning and hierarchical partitioning methods to explore the red-crowned crane-habitat relationship at multiple scales in the Yellow River Delta Nature Reserve (YRDNR). In addition, we used habitat modeling to identify the cranes' habitat d...
Heyer, W. Ronald. Studies in Larval Amphibian Habitat Partitioning. Smithsonian Contributions to Zoology, number 242, 27 pages, 3 figures, 14 tables, 1976.—Habitat partitioning by larval amphibians was studied in two environments. A two-year study was undertaken at the Chesapeake Bay Center for Environmental Studies and a comparative dry and wet season study was completed at Barro Colorado Isla...
Unbound plasma concentrations may not reflect those in target tissues, and there is a need for methods to predict tissue partitioning. Here, we investigate the unbound liver partitioning (Kpu,u) of rosuvastatin, a substrate of hepatic organic anion transporting peptides, in cynomolgus monkeys and compare it with that determined using hepatocytes in vitro. Rosuvastatin (3 mg/kg) was administered...
background: sediments are inseparable fractions of wetland ecosystems that work as a his-torical archive in the process of recording heavy metal aggregation changes. this study was carried out for assessing co, ni, and zn in sediment samples of mighan wetland using geo-accumulation index in 2013. methods:the sediment samples were taken from 11 stations. the samples were subjected to bulk digest...
in this paper, we present a binary-linear optimization model to prevent the spread of an infectious disease in a community. the model is based on the remotion of some connections in a contact network in order to separate infected nodes from the others. by using this model we nd an exact optimal solution and determine not only the minimum number of deleted links but also their exact positions. ...
drought is the main constraint limiting chickpea productivity which makes a considerable difference between the potential and actual yield. in order to evaluate the effect of drought stress on different morpho-physiological characteristics of chickpea, four distinct genotypes were studied in three sampling times (pre-stress, stress and recovery) with three replications. as the results implicate...
accumulation of trace metals in sediment can cause severe ecological impacts. the present study determines the elemental concentrations and chemical partitioning of heavy metals in surface sediment of shadegan wetland. shadegan wetland is one of the most important wetlands in southwest of iran and it is in ramsar-listed wetlands. for this purpose, 7 sampling stations were selected for sediment ...
We consider modeling, predicting and evaluating the perfonnance of methods for solving PDEs in parallel architectures. We have developed a method for coarse grain partitioning of computations for parallel architectures and we apply it to three PDE applications: (a) Cholesky factorization, (b) spline collocation, and (c) an application complete from processing text input to plotting the PDE solu...
A Linear-Time Algorithm for Optimal Tree Sibling Partitioning and its Application to XML Data Stores
Document insertion into a native XML Data Store (XDS) requires to partition the document tree into a number of storage units with limited capacity, such as records on disk pages. As intra partition navigation is much faster than navigation between partitions, minimizing the number of partitions has a beneficial effect on query performance. We present a linear time algorithm to optimally partiti...
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