Results 81 to 90 of about 1,952,749 (256)

A global latitudinal decline in breeding site fidelity emerges from a single biome

Ecography, EarlyView.
Species that breed in multiple years can either return to the same location to reproduce between seasons or disperse to a different location. Previous studies have shown that breeding site fidelity varies with species‐ and individual‐specific traits, but much of the observed variation remains unexplained.
Peter Santema, Eunbi Kwon, Luke Eberhart‐Hertel, Mihai Valcu, Bart Kempenaers   +4 more
wiley   +1 more source

A gravity model of mortality rates for two related populations [PDF]

The mortality rate dynamics between two related but different-sized populations are modeled consistently using a new stochastic mortality model that we call the gravity model.
Coughlan, Guy, Cairns, Andrew, Blake, David, Khalaf-Allah, Marwa, Dowd, Kevin   +4 more
core  

Butterfly abundances but not patch occupancy buffered by vegetation heterogeneity during climatic extremes

Ecography, EarlyView.
As extreme climatic events are becoming more frequent, we need to understand what mechanisms could buffer populations to ensure their persistence. Fragmented populations may be especially vulnerable, as exemplified by species with metapopulation dynamics whose persistence is determined by a precarious balance between frequent local extinctions and ...
Natalie E. van Dis, Mirkka M. Jones, Pekka Niittynen, Miska Luoto, Jukka Sirén, Marjo Saastamoinen   +5 more
wiley   +1 more source

Modeling Mortality: Empirical Studies on the Effect of Mortality on Annuity Markets. [PDF]

Chapter 3 of the dissertation models the macro-longevity risk and introduces a stochastic model for human mortality rates. Chapter 4 analyzes the importance of mortality improvement and mortality risk (macro- and micro-longevity risk and parameter ...
Hari, N.
core  

Long‐term prediction of epilepsy following traumatic brain injury among veterans using routine clinical data

Epilepsia, EarlyView.
Abstract Objective Despite elevated risk for epilepsy following traumatic brain injury (TBI), there are limited tools to assess epilepsy risk following TBI using routine clinical data. The objective of this study was to develop and validate a machine learning approach to predict the onset of posttraumatic epilepsy (PTE) over varying time horizons ...
Mustafa Ozmen, Shashank Vadlamani, James J. Gugger, Megan Amuan, Ramon Diaz‐Arrastia, Mary Jo Pugh, Eamonn Kennedy   +6 more
wiley   +1 more source

A Novel Modification of the Cairns–Blake–Dowd Model: Consideration for Retirement Cohort Trends

Journal of Probability and Statistics
The study introduces an incremental extension of the Cairns–Blake–Dowd (CBD) 2006 stochastic mortality model by adding a retirement cohort effect to enhance the applicability and prediction ability for actuarial purposes.
Abigail Yeboah Boateng, Akoto Yaw Omari-Sasu, Maxwell Akwasi Boateng   +2 more
doaj   +1 more source

Uncertainty Quantification in Computational Electromagnetics: The stochastic approach [PDF]

, 2013
Models in electromagnetism are more and more accurate. In some applications, the gap between the experience and the model comes from the deviation on input data of the model which are not perfectly known.
CLENET, Stephane
core  

Flexible wearable electronics for cardiovascular monitoring from surface signals to deep physiological insights

FlexMat, EarlyView.
This review organizes flexible wearable electronics for cardiovascular monitoring into four interconnected information layers: surface electrophysiology, hemodynamic sensing, vascular imaging, and biofluid biomarker analysis. This framework clarifies how electrical rhythm, vascular loading, structural and flow‐related features, and biochemical states ...
Qiao Chen, Hongwen Chen, Yuanyuan Li, Pingan Yang, Rui Li, Zhihao Zhou   +5 more
wiley   +1 more source

Stochastic Infinite Horizon Forecasts for Social Security and Related Studies [PDF]

This paper consists of three reports on stochastic forecasting for Social Security, on infinite horizons, immigration, and structural time series models. 1) In our preferred stochastic immigration forecast, total net immigration drops from current levels
Timothy Miller, Michael Anderson, Ronald Lee   +2 more
core  

Cost estimation for rearing dairy young stock in Sabah, Malaysia: a stochastic model accounting for calf mortality uncertainty [PDF]

The rearing of young stock in tropical countries is considered a substantial investment for dairy farmers due to non-productivity and the higher risk of mortality in the first 2 to 3 years of youngstock life.
Mohd Nor, Norhariani, Mohd Suhaimi, Nurul Aisyah, Ang, Xin Tong, Hiew, Mark Wen Han, Khairuddin, Uswah, Sithambaram, Shanmugavelu, Shapiai, Mohd Ibrahim   +6 more
core   +1 more source