Results 31 to 40 of about 9,041,918 (353)

Modeling Best Practice Life Expectancy Using Gumbel Autoregressive Models

open access: yesRisks, 2021
Best practice life expectancy has recently been modeled using extreme value theory. In this paper we present the Gumbel autoregressive model of order one—Gumbel AR(1)—as an option for modeling best practice life expectancy. This class of model represents
Anthony Medford
doaj   +1 more source

More frequent extreme climate events stabilize reindeer population dynamics

open access: yesNature Communications, 2019
Extreme climate events often cause population crashes but are difficult to account for in population-dynamic studies. Especially in long-lived animals, density dependence and demography may induce lagged impacts of perturbations on population growth.
B. Hansen   +10 more
semanticscholar   +1 more source

Human population dynamics

open access: yesAnnals of Human Biology, 2001
Time-series analysis of parish register series can be used to study human population dynamics at three different levels: (i) The metapopulation of preindustrial rural England. A short wavelength, exogenous oscillation in the burials series of 404 parishes can be detected which, it is suggested, was driven by a cycle of malnutrition associated with ...
Duncan, S, Duncan, C, Scott, S
openaire   +3 more sources

Why Do Herbivorous Mites Suppress Plant Defenses?

open access: yesFrontiers in Plant Science, 2018
Plants have evolved numerous defensive traits that enable them to resist herbivores. In turn, this resistance has selected for herbivores that can cope with defenses by either avoiding, resisting or suppressing them. Several species of herbivorous mites,
C. Joséphine H. Blaazer   +6 more
doaj   +1 more source

Tetranychus evansi spider mite populations suppress tomato defenses to varying degrees

open access: yesEcology and Evolution, 2020
Plant defense suppression is an offensive strategy of herbivores, in which they manipulate plant physiological processes to increase their performance. Paradoxically, defense suppression does not always benefit the defense‐suppressing herbivores, because
Bram Knegt   +4 more
doaj   +1 more source

Preservation of Mammalian Teeth and Bones Influences Identification of Terminal Pleistocene to Middle Holocene Hunter-Gatherer Subsistence at Ban Rai Rockshelter, Northwest Thailand

open access: yesQuaternary, 2022
Ban Rai Rockshelter in northwest Thailand, dating to the Terminal Pleistocene and Middle Holocene, includes evidence for hunter-gatherer exploitation of mammals, birds, reptiles, fish, and arthropods.
Athiwat Wattanapituksakul   +2 more
doaj   +1 more source

Population Dynamics [PDF]

open access: yesNature Precedings, 2009
AbstractExplicit assumption that the use of natural resources promoting and sustaining growth is proportional to the number of people living on the planet at any given time leads to a model, which reproduces the population data remarkably well.
openaire   +3 more sources

Understanding Health Deterioration and the Dynamic Relationship between Physical Ability and Cognition among a Cohort of Danish Nonagenarians

open access: yesJournal of Aging Research, 2020
This study aims to determine how demographics, socioeconomic characteristics, and lifestyle affect physical and cognitive health transitions among nonagenarians, whether these transitions follow the same patterns, and how each dimension affects the ...
Cosmo Strozza   +2 more
doaj   +1 more source

Association between sexual violence and unintended pregnancy among adolescent girls and young women in South Africa

open access: yesBMC Public Health, 2020
Background Unintended pregnancy has dire consequences on the health and socioeconomic wellbeing of adolescent girls and young women (AGYW) (aged 15–24 years).
Anthony Idowu Ajayi   +1 more
doaj   +1 more source

Different population dynamics in the supplementary motor area and motor cortex during reaching

open access: yesNature Communications, 2018
Neural populations perform computations through their collective activity. Different computations likely require different population-level dynamics. We leverage this assumption to examine neural responses recorded from the supplementary motor area (SMA)
Antonio H. Lara   +2 more
semanticscholar   +1 more source

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