نتایج جستجو برای: variable ecological components

تعداد نتایج: 729860  

Journal: :Revista panamericana de salud publica = Pan American journal of public health 2013
Gemma Renart Marc Saez Carme Saurina Rafael Marcos-Gragera Ricardo Ocaña-Riola Carmen Martos Maria A Barceló Federico Arribas Tomás Alcalá

OBJECTIVE To determine if introducing age as another explanatory variable in an ecological regression model relating crude rates of cancer incidence and a deprivation index provides better results than the usual practice of using the standard incidence ratio (SIR) as the response variable, introducing the non-standardized index, and not including age in the model. METHODS Relative risks assoc...

Journal: :Trends in parasitology 2007
Daniel R Brooks Eric P Hoberg

Parasites are integral components of the biosphere. Host switching correlated with events of episodic climate change is ubiquitous in evolutionary and ecological time. Global climate change produces ecological perturbations, which cause geographical and phenological shifts, and alteration in the dynamics of parasite transmission, increasing the potential for host switching. The intersection of ...

Journal: :Trends in ecology & evolution 2009
Daniel Nettle

Human societies are remarkably variable in terms of their size, complexity, social structure, marriage systems and norms. This diversity has sometimes been raised as an obstacle to taking an evolutionary approach to human behaviour. However, a substantial proportion of the variation between human societies might represent local adaptation to ecological conditions and would thus be very much ame...

F.R. Ismagilov J.P. Vasjko S.V. Mesheryakov Z.F Ismagilova, Z.F

Raw material of heavy oil and gas deposits, developed in per Caspian lowland (Orenburg, Astrakhan, Tengiz, Zanazol), is characterized by high content of acid components (H2S, CO2) and sulphoorganic compounds. Under such circumstances the importance of industrial mining and development of new, economical and wasteless technologies, providing full and experienced usage of all raw compounds being ...

2016
Ryan Allan Johnson Marc A. Linderman RYAN ALLAN JOHNSON Heather Sander

Ecological indicators, historical land use, and invasive species detection in the lower Iowa River floodplain." MA has been approved by the Examining Committee for the thesis requirement for the Master of Arts degree in Geography at the May 2014 graduation.

Journal: :Journal of personality and social psychology 2005
Linda C Gallo Laura M Bogart Ana-Maria Vranceanu Karen A Matthews

The current study used ecological momentary assessment to test several tenets of the reserve capacity model (L.C. Gallo & K. A. Matthews, 2003). Women (N = 108) with varying socioeconomic status (SES) monitored positive and negative psychosocial experiences and emotions across 2 days. Measures of intrapsychic and social resources were aggregated to represent the reserve capacity available to ma...

Journal: :J. Informetrics 2013
Ludo Waltman Nees Jan van Eck

We address the question how citation-based bibliometric indicators can best be normalized to ensure fair comparisons between publications from different scientific fields and different years. In a systematic large-scale empirical analysis, we compare a traditional normalization approach based on a field classification system with three source normalization approaches. We pay special attention t...

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