Results 11 to 20 of about 1,481,982 (265)

Population aging and changes in the age structure of Slovakia

open access: yesRevija za Geografijo, 2012
The age group structure of the population in the districts of Slovakia was highlighted by means of an analysis of the three big age groups: 0 – 19 years, 20 – 64 years and 65 years and older. The paper reports on the development of the characteristics of
Slavomír Bucher
doaj   +5 more sources

Theory of aging in structural glasses [PDF]

open access: yesThe Journal of Chemical Physics, 2004
The random first-order transition theory of the dynamics of supercooled liquids is extended to treat aging phenomena in nonequilibrium structural glasses. A reformulation of the idea of “entropic droplets” in terms of libraries of local energy landscapes is introduced which treats in a uniform way the supercooled liquid (reproducing earlier results ...
Lubchenko, Vassiliy, Wolynes, Peter G.
openaire   +3 more sources

Intraday Variation Mapping of Population Age Structure via Urban-Functional-Region-Based Scaling

open access: yesRemote Sensing, 2021
The spatial distribution of the population is uneven for various reasons, such as urban-rural differences and geographical conditions differences.
Yuncong Zhao   +5 more
doaj   +1 more source

The age-structured lottery model [PDF]

open access: yesTheoretical Population Biology, 2003
The lottery model of competition between species in a variable environmental has been influential in understanding how coexistence may result from interactions between fluctuating environmental and competitive factors. Of most importance, it has led to the concept of the storage effect as a mechanism of species coexistence.
Dewi, S., Chesson, P.
openaire   +2 more sources

Development and prediction of the selected population movement indicators in the Czech Republic

open access: yesAgricultural Economics (AGRICECON), 2005
The paper is aimed at the presentation of findings obtained in the study of the developmental trends of the population reproduction indicators in the territory of the Czech Republic in the reference period 1993-2003.
M. Palát, E. Maca
doaj   +1 more source

Comparison of natural regeneration and radial growth variations of trees in the utilized and unutilized beech stands, Case study: Asalem forest [PDF]

open access: yesمجله جنگل ایران, 2019
This study was carried out in the oriental beech communities in order to investigate the natural regeneration and assessment of radial growth trend from 1960 to 2016.
Sepide Sadat Ebrahimi   +2 more
doaj  

Estimating ages of white‐tailed deer: Age and sex patterns of error using tooth wear‐and‐replacement and consistency of cementum annuli

open access: yesWildlife Society Bulletin, 2014
The age structure of harvested animals provides the basis for many demographic analyses. Ages of harvested white‐tailed deer (Odocoileus virginianus) and other ungulates often are estimated by evaluating replacement and wear patterns of teeth, which is ...
Daniel J. Storm   +5 more
doaj   +1 more source

The structure of Scots pine and Black locust forests in the Northern Steppe of Ukraine

open access: yesJournal of Forest Science, 2016
The article describes the distribution of areas of Scots pine (Pinus sylvestris Linnaeus) and Black locust (Robinia pseudoacacia Linnaeus) stands within the Northern Steppe of Ukraine based on forest biometry data.
V. Lovinska, S. Sytnyk
doaj   +1 more source

Determinants of demographic aging in the Republic of Serbia [PDF]

open access: yesZbornik Radova Filozofskog Fakulteta u Prištini, 2023
The aging of the population represents one of the dominant characteristics of the demographic development of Serbia in the second half of the 20th century.
Milosavljević Saša A.   +1 more
doaj  

Changes in the age structure of the population in the settlements of Zajecar municipality [PDF]

open access: yesGlasnik Srpskog Geografskog Društva, 2009
The paper analyzes changes in age structure of 42 settlements of Zaječar community from aspects of total amount of population, population size, sort, type and the hypsometric zone they belong to. Statistical analysis done on a two census years (1971. and
Pavlović Sanja, Jančić Marijana
doaj   +1 more source

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