نتایج جستجو برای: habitat destruction

تعداد نتایج: 89758  

Habitat analysis using landscape metrics can be efficient in better management of habitat. As a critically endangered subspecies, the Baluchistan black bear is scattered in the Bahr Asman and Zaryab areas in Kerman province. The purpose of this study was to model the distribution of the sub-species and evaluate the quality of its habitat patches, using landscape metrics. Distribution modeling w...

2011
Tonglin Zhang

—The detection of materials or devices for nuclear or radiological weapons of mass destruction is fundamentally important to national safety and security, and detection technologies are necessary both to nd and to verify the location of those materials or devices. To ful ll this task, this paper presents a statistical approach to the detection and location of radioactive target via wireless sen...

2011
Judith Zimmermann Kay Henning Brodersen Jean-Philippe Pellet Elias August Joachim M. Buhmann

One of the principal concerns in graduate admissions is how future performance in graduate studies may be predicted from a candidate’s undergraduate achievements. In this study, we examined the statistical relationship between B.Sc. and M.Sc. achievements using a dataset that is not subject to an admission-induced selection bias. Our analysis yielded three insights. First, we were able to expla...

Journal: :J. Symb. Log. 2014
Itay Kaplan Saharon Shelah

In the first part we show a counterexample to a conjecture by Shelah regarding the existence of indiscernible sequences in dependent theories (up to the first inaccessible cardinal). In the second part we discuss generic pairs, and give an example where the pair is not dependent. Then we define the notion of directionality which deals with counting the number of coheirs of a type and we give ex...

Journal: :Globalization and Health 2009
Mark D'Agostino Greg Martin

In December 2008, the US Commission on the Prevention of Weapons of Mass Destruction Proliferation and Terrorism, released a report, World At Risk. The Report points to the fact that, not only is the use of a weapon of mass destruction in a terrorist attack before the end of 2013, more likely than not, but also to the fact that terrorists are more likely to be able to obtain and use biological ...

2010
MIN ZHAO JINHONG XIE

This paper examines the interplay of social and temporal distance on consumers’ responses to others’ recommendations. Drawing on research on psychological distance and the “fit” literature, the authors hypothesize that others’ recommendation is more persuasive when the construal levels associated with both social distance and temporal distance are congruent. Specifically, the authors first demo...

Journal: :Frontiers in bioscience : a journal and virtual library 2000
J A Maupin-Furlow H L Wilson S J Kaczowka M S Ou

Survival of cells is critically dependent on their ability to rapidly adapt to changes in the natural environment no matter how 'extreme'the habitat. An interplay between protein folding and hydrolysis is emerging as a central mechanism for stress survival and proper cell function. In eucaryotic cells, most proteins destined for destruction are covalently modified by the ubiquitin-system and th...

1979
J. C. WATT

The Cromwell chafer, Prodontria lewisi, is a flightless chafer beetle whose natural range appears not to have been more than 500 hectares and which now, because of habitat destruction and modification, is reduced to about 100 hectares. This inhabited area is situated on the terrace on which the town of Cromwell, Central Otago, is built. The continued existence of the Cromwell chafer is threaten...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2006
Owen T Lewis

An article published in the journal Nature in January 2004-in which an international team of biologists predicted that climate change would, by 2050, doom 15-37% of the earth's species to extinction-attracted unprecedented, worldwide media attention. The predictions conflict with the conventional wisdom that habitat change and modification are the most important causes of current and future ext...

Journal: :Ecological applications : a publication of the Ecological Society of America 2006
Stephanie Jill Kamel N Mrosovsky

Phenotypic sex in sea turtles is determined by nest incubation temperatures, with warmer temperatures producing females and cooler temperatures producing males. The common finding of highly skewed female-biased hatchling sex ratios in sea turtle populations could have serious repercussions for the long-term survival of these species and prompted us to examine the thermal profile of a relatively...

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