نتایج جستجو برای: sand martin

تعداد نتایج: 46996  

Journal: :international journal of environmental research 2015
i. kitowski a. komosa j. chodorowski

animals that breed in ground holes can be exposed to higher doses of radiation from natural radioactive isotopes, including radon and its daughters, present in soil air. one of such species is the sand martin riparia riparia. examination of natural burrows in sand mines revealed radon levels of 2.82-1320 bq/m3 in the examined soil horizon where martins dug their burrows. it was shown that adult...

2008
Tim Sparks Piotr Tryjanowski

We examined the first arrival dates in the UK over a 56 yr period of 2 hirundines, sand martin Riparia riparia and barn swallow Hirundo rustica, in relation to temperatures along migration routes and at destination. Changes in arrival dates have been much greater for sand martin than for barn swallow, and the arrival order of the 2 species now appears to have reversed. There appear to be 2 reas...

2017
Yao Wang Martin Claassen B. Moritz T. P. Devereaux

Yao Wang, 2 Martin Claassen, 2 B. Moritz, 3 and T. P. Devereaux 4, ∗ Department of Applied Physics, Stanford University, California 94305, USA Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA Department of Physics and Astrophysics, University of North Dakota, Grand Forks, North Dakota 58202, USA Ge...

Journal: :Computational Statistics & Data Analysis 2014
Tuomas Rajala Antti Penttinen

Gibbs point processes are statistical models for spatial point patterns with repulsive interactions between points. Traditionally a constant repulsion range is assumed. In reality, the repulsion range might change from location to location as a result of environmental heterogeneity. In this talk I will discuss the modeling of space varying repulsion range parameter in Bayesian framework using G...

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