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A simulation model of a population having internal (genetic) structure is presented. The population is subject to selection pressure coming from the environment which is the same in the whole system but changes in time. Reproduction has a…

适应与自组织系统 · 物理学 2012-08-31 Andrzej Pekalski , Marcel Ausloos

Aging in a two dimensional suspension containing rods was studied by means of kinetic Monte Carlo simulations. An off-lattice model with continuous positional and orientational degrees of freedom was considered. The initial state was…

统计力学 · 物理学 2019-11-01 Nikolai I. Lebovka , Nikolai V. Vygornitskii , Yuri Yu. Tarasevich

We report new results about the two-time dynamics of an anomalously diffusing classical particle, as described by the generalized Langevin equation with a frequency-dependent noise and the associated friction. The noise is defined by its…

统计力学 · 物理学 2009-11-07 Noelle Pottier

Once the problem of ensemble averaging is removed, correlations between the response of a single molecule to an external driving field $F$, with the history of fluctuations of the particle, become detectable. Exact analytical theory for the…

统计力学 · 物理学 2009-11-11 Eli Barkai

Healthy ageing is associated with decline in cognitive abilities such as language. Aerobic fitness has been shown to ameliorate decline in some cognitive domains, but the potential benefits for language have not been examined. In a…

应用统计 · 统计学 2018-04-13 K. Segaert , S. J. E. Lucas , C. V. Burley , Pieter Segaert , A. E. Milner , M. Ryan , L. Wheeldon

We live within an increasingly technological, information-laden environment for the first time in human evolution.This subjects us, and will continue to subject us in an accelerating fashion, to an unremitting exposure to meaningful…

种群与进化 · 定量生物学 2013-06-13 Marios Kyriazis

Age spots are the brown spots that develop in the skin but change in color and shape with time. To understand the mechanism of development of age spots, characteristics of age spots are analyzed by Misrepair mechanism, a mechanism…

组织与器官 · 定量生物学 2018-02-06 Jicun Wang-Michelitsch , Thomas M Michelitsch

Air pollution is associated with human diseases and has been found to be related to premature mortality. In response, environmental policies have been adopted in many countries, to decrease anthropogenic air pollution for the improvement of…

大气与海洋物理 · 物理学 2020-01-08 Yongwen Zhang , Jingfang Fan , Xiaosong Chen , Yosef Ashkenazy , Shlomo Havlin

Diabetic neuropathy is a disorder characterized by impaired nerve function and reduction of the number of epidermal nerve fibers per epidermal surface. Additionally, as neuropathy related nerve fiber loss and regrowth progresses over time,…

Addressing the health challenges faced by the aging population, particularly undernutrition, is of paramount importance, given the significant representation of older individuals in society. Undernutrition arises from a disbalance between…

定量方法 · 定量生物学 2023-12-22 Abderrahim Derouiche , Ghazi Bouaziz , Damien Brulin , Eric Campo , Antoine Piau

After birth setting up an effective immune system is a major challenge for all living organisms. In this paper we show that this process can be explored by using the age-specific infant death rate as a kind of sensor. This is made possible…

医学物理 · 物理学 2016-10-10 Peter Richmond , Bertrand M. Roehner

Because of permanent use-dependent brain plasticity, all lifelong individuals' experiences are believed to influence the cognitive aging quality. In older individuals, both former and current musical practices have been associated with…

Chronic pain is a widespread and debilitating condition that affects millions of individuals worldwide. Recent research has unveiled a connection between chronic pain and epigenetic processes, shedding light on the complex interplay between…

定量方法 · 定量生物学 2023-09-28 Flora Fan

Longevity of a taxonomic group is an important issue in understanding the dynamics of evolution. In this respect a key observation is that genera, families or orders can each be assigned a characteristic average lifetime [Van Valen, L.,…

种群与进化 · 定量生物学 2007-05-23 Stefan Bornholdt , Kim Sneppen , Hildegard Westphal

Widespread population aging has made it critical to understand death rates at old ages. However, studying mortality at old ages is challenging because the data are sparse: numbers of survivors and deaths get smaller and smaller with age. We…

应用统计 · 统计学 2018-03-29 Dennis M. Feehan

Biological populations are subject to two types of noise: demographic stochasticity due to fluctuations in the reproductive success of individuals, and environmental variations that affect coherently the relative fitness of entire…

种群与进化 · 定量生物学 2018-04-04 Matan Danino , David A. Kessler , Nadav M. Shnerb

This article uses machine learning (ML) and explainable artificial intelligence (XAI) techniques to investigate the relationship between nutritional status and mortality rates associated with Alzheimers disease (AD). The Third National…

机器学习 · 计算机科学 2024-05-29 Ziming Liu , Longjian Liu , Robert E. Heidel , Xiaopeng Zhao

As global population aging intensifies, there is growing interest in the study of biological age. Bones have long been used to evaluate biological age, and the decline in bone density with age is a well-recognized phenomenon in adults.…

We study the nonequilibrium aging dynamics in a system of quasi-hard spheres at large density by means of computer simulations. We find that, after a sudden quench to large density, the relaxation time initially increases exponentially with…

统计力学 · 物理学 2010-10-01 Djamel El Masri , Ludovic Berthier , Luca Cipelletti

From a public health perspective, previous research on comorbidity tends to have focused on identifying the most prevalent groupings of illnesses that demonstrate comorbidity, particularly among the elderly population, already in receipt of…

应用统计 · 统计学 2014-11-12 Karyn Morrissey , Ferran Espuny , Paul Williamson
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