Results 11 to 20 of about 7,148,896 (300)

Statistical Thermodynamics of Clustered Populations [PDF]

open access: yes, 2014
We present a thermodynamic theory for a generic population of $M$ individuals distributed into $N$ groups (clusters). We construct the ensemble of all distributions with fixed $M$ and $N$, introduce a selection functional that embodies the physics that ...
Matsoukas, Themis
core   +1 more source

Stellar Populations in Normal Galaxies [PDF]

open access: yes, 2007
I describe very briefly the new libraries of empirical spectra of stars covering wide ranges of values of the atmospheric parameters Teff, log g, [Fe/H], as well as spectral type, that have become available in the recent past, among them the HNGSL, MILES,
A, Gustavo Bruzual
core   +3 more sources

Minimum capture-recapture rates and years of banding station operations to obtain reliable adult annual survival estimates

open access: yesJournal of Field Ornithology, 2022
We examined variability in adult annual survival rate estimates for 33 breeding bird species, using 2011–2019 data from a 38-station Monitoring Avian Productivity and Survivorship (MAPS) program in Alberta, Canada.
Danielle R. Kaschube   +5 more
doaj  

Using conspecific broadcast for Willow Flycatcher restoration

open access: yesAvian Conservation and Ecology, 2018
Willow Flycatcher (Empidonax traillii) populations have been in decline across the western United States for decades. California populations are especially vulnerable with fewer than 500 pairs remaining in the state.
Lynn N. Schofield   +4 more
doaj   +1 more source

Stochastic epidemics in growing populations [PDF]

open access: yes, 2013
Consider a uniformly mixing population which grows as a super-critical linear birth and death process. At some time an infectious disease (of SIR or SEIR type) is introduced by one individual being infected from outside.
Britton, Tom, Trapman, Pieter
core   +2 more sources

Collective intelligence in medical decision-making: a systematic scoping review

open access: yesBMC Medical Informatics and Decision Making, 2019
Background Collective intelligence, facilitated by information technology or manual techniques, refers to the collective insight of groups working on a task and has the potential to generate more accurate information or decisions than individuals can ...
Kate Radcliffe   +3 more
doaj   +1 more source

Stellar Populations in Spiral Galaxies [PDF]

open access: yes, 2007
We report preliminary results of the characterization of bulge and inner disk stellar populations for 8 nearby spiral galaxies using Gemini/GMOS. The long-slit spectra extend out to 1-2 disk scale lengths with S/N/Ang > 50.
Courteau, Stephane   +2 more
core   +3 more sources

The dynamics of questing ticks collected for 164 consecutive months off the vegetation of two landscape zones in the Kruger National Park (1988–2002). Part I. Total ticks, Amblyomma hebraeum and Rhipicephalus decoloratus

open access: yesOnderstepoort Journal of Veterinary Research, 2011
Despite a large number of studies on tick biology, there is limited information on long- term changes in tick populations. This study thus aimed to assess the long-term population dynamics of questing ixodid ticks in two landscape zones of the Kruger ...
Ivan G. Horak   +2 more
doaj   +1 more source

The Genetic Structure and History of Africans and African Americans. [PDF]

open access: yes, 2009
Africa is the source of all modern humans, but characterization of genetic variation and of relationships among populations across the continent has been enigmatic. We studied 121 African populations, four African American populations, and 60 non-African
A. A. Awomoyi   +61 more
core   +1 more source

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