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Survival of the fittest: do low vitrified/warmed donor oocyte survival rates reflect the quality of the remaining eggs?
Fertil Steril
December 2024
Shady Grove Fertility, San Diego, California, USA.
Environmental regulation, factor flow, and resource misallocation.
J Environ Manage
December 2024
School of Economics and Management, Guangxi Normal University, Guilin, 541006, China.
Article Synopsis
- China is actively tackling climate change by committing to international environmental protection, with industrial enterprises playing a key role in green development.
- A study using micro panel data from 235 prefecture-level cities in China finds that stricter environmental regulations reduce resource misallocation in manufacturing sectors.
- The analysis reveals that these regulations help optimize resource allocation through effects like improved factor flow and competition, particularly benefiting eastern and high-industrialization cities, while suggesting stronger government oversight as a countermeasure.
Article Synopsis
- - Ben-Ari and Schinazi developed a stochastic model to analyze 'virus-like evolving populations' with high mutation rates, where the birth and death process involves mutants and individuals with existing fitness parameters.
- - In their model, the death of individuals removes the least fit members, creating a competitive environment, but the fitness distribution results in exponential behavior.
- - The revised model incorporates 'survival of the fittest' by using a preferential attachment mechanism, leading to a power law behavior in population dynamics rather than the exponential behavior observed in the original model.
Survival of the fittest? Peak oxygen uptake and all-cause mortality among older adults in Norway.
Prog Cardiovasc Dis
December 2024
Cardiac Exercise Research Group (CERG), Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Centre for Research on Exercise, Physical Activity and Health, School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Queensland, Australia. Electronic address:
Objective: To determine the cardiorespiratory fitness (CRF) levels needed to avoid the Grim Reaper (Death) among older adults. We hypothesized that an above average peak oxygen uptake (VO) is needed for 70-77-year-old men and women to delay the encounter with Death.
Design: Prospective cohort study.
Winning with Losses: The Surprising Success of Negative Strategies in Social Interaction Behavior.
Phys Rev Lett
October 2024
School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, S637371, Singapore.
In the vast network of social interactions and behaviors, it is common to find certain schemes that, on their own, might appear counterproductive to societal progress. When observed in isolation, these schemes often seem to hinder more than they help. However, due to society's complexity, the hidden potential of combining these seemingly detrimental schemes often goes unnoticed.
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