Results 71 to 80 of about 7,020,352 (297)

Extinction rates of established spatial populations

open access: yes, 2011
This paper deals with extinction of an isolated population caused by intrinsic noise. We model the population dynamics in a "refuge" as a Markov process which involves births and deaths on discrete lattice sites and random migrations between neighboring ...
A. S. Mikhailov   +8 more
core   +1 more source

Resampling: an improvement of Importance Sampling in varying population size models [PDF]

open access: yes, 2016
Sequential importance sampling algorithms have been defined to estimate likelihoods in models of ancestral population processes. However, these algorithms are based on features of the models with constant population size, and become inefficient when the ...
Leblois, Raphaël   +3 more
core   +4 more sources

The Fate (Outcome) of Clinically Apparent Single Lesion and Oligofocal Nephroblastomatosis Treated According to SIOP/GPOH Protocols for Wilms Tumor

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter   +17 more
wiley   +1 more source

Estructura poblacional de Polythore gigantea (Odonata: Polythoridae) en sistemas lóticos con diferentes estados de conservación en Antioquia, Colombia Population structure of Polythore gigantea (Odonata: Polythoridae) in lotic systems with different conservation states in Antioquia-Colombia

open access: yesRevista de Biología Tropical, 2012
Evaluar si el estado de conservación de algunos sistemas lóticos, se relaciona con algunas variables demográficas de P. gigantea puede ser un modelo útil para el monitoreo ecológico. Se evaluó la estructura poblacional de P.
Mariano Altamiranda-S, Oscar Ortega-M
doaj  

Effective population size of current human population

open access: yesGenetics Research, 2011
SummaryIn order to estimate the effective population size (Ne) of the current human population, two new approaches, which were derived from previous methods, were used in this study. One is based on the deviation from linkage equilibrium (LE) between completely unlinked loci in different chromosomes and another is based on the deviation from the Hardy ...
openaire   +2 more sources

On Counting the Population Size [PDF]

open access: yesProceedings of the 2019 ACM Symposium on Principles of Distributed Computing, 2019
We consider the problem of counting the population size in the population model. In this model, we are given a distributed system of $n$ identical agents which interact in pairs with the goal to solve a common task. In each time step, the two interacting agents are selected uniformly at random.
Berenbrink, Petra   +2 more
openaire   +2 more sources

Inpatient Food Insecurity and Pediatric Hematology Oncology Hospitalization Outcomes

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Children with cancer and blood disorders are at risk for food insecurity (FI). We aimed to describe the association of inpatient food insecurity (IFI) and hospitalization outcomes among patients admitted to the pediatric hematology oncology service. Of 325 caregivers screened for IFI, 60 (18.6%) screened positive.
Joanna M. Robles   +4 more
wiley   +1 more source

An exercise in archaeological demography: estimating the population size of Late Neolithic settlements in the Central Balkans

open access: yesDocumenta Praehistorica, 2011
This paper reflects on the methodology for estimating population size from settlement data. Archaeologists are faced with a static record of houses, which is the result of dynamic processes of population growth and house use.
Marko Porčić
doaj   +1 more source

An Efficient Bayesian Inference Framework for Coalescent-Based Nonparametric Phylodynamics

open access: yes, 2014
Phylodynamics focuses on the problem of reconstructing past population size dynamics from current genetic samples taken from the population of interest.
Karcher, Michael   +4 more
core   +2 more sources

Health‐Related Quality of Life and Symptom Severity Among Patients With PIK3CA‐Related Overgrowth Spectrum: A Mixed‐Methods Study to Understand Real‐World Experience With Alpelisib Treatment

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background PIK3CA‐related overgrowth spectrum (PROS) includes several rare overgrowth disorders resulting from somatic gain‐of‐function mutations in PIK3CA. Despite treatment advances, including the recent approval of alpelisib for PROS in the United States, literature detailing the patient experience with PROS is limited.
Vamsi Bollu   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy