Results 71 to 80 of about 685,848 (332)
Child abuse and pubertal timing: what is the role of child sex and identity of the perpetrator?
BMC PsychiatryBackground This study investigated the association between child abuse [child neglect (CN), emotional (CEA) and physical abuse (CPA)] and early puberty with special regard to sex-specific effects concerning child and parental perpetrator.
V. Steger +3 more
doaj +1 more source
Flexible Memory: Progress, Challenges, and Opportunities
Advanced Intelligent Discovery, EarlyView.Flexible memory technology is crucial for flexible electronics integration. This review covers its historical evolution, evaluates rigid systems, proposes a flexible memory framework based on multiple mechanisms, stresses material design's role, presents a coupling model for performance optimization, and points out future directions.
Ruizhi Yuan +5 more
wiley +1 more source
Covalent organic framework membrane with hourglass-shaped nanochannels for ultrafast desalination
Nature CommunicationsCovalent organic framework (COF) holds great potential as next-generation high-performance desalination membrane material owing to their uniform nanochannels (homo-nanochannels) and abundant functional groups, and the hierarchical structures of ...
Xiaocui Wei +8 more
doaj +1 more source
Food allergies in children – aspects of epidemiology and diet management
Journal of Medical Science, 2014 For many years there has been a steady increase in the prevalence of allergic diseases, especially in developed countries. Scientists expect that in the year 2020, atopic diseases will be present in 50% of the population worldwide. Determining the actual
Marcelina Walczak +3 more
doaj +1 more source
Learning Optimal Crowd Evacuation from Scratch Through Self‐Play
Advanced Intelligent Systems, EarlyView.How would a superintelligent crowd behave in emergencies? This study develops an approach using multiagent deep reinforcement learning combined with self‐play to discover optimal evacuation strategies for pressure‐aware agents. The model learns behaviors such as queuing and zipper‐merging that significantly surpass traditional approaches in fatality ...
Mahdi Nasiri +3 more
wiley +1 more source
Broadcasting but not receiving: density dependence considerations for SETI signals
, 2009 This paper develops a detailed quantitative model which uses the Drake equation and an assumption of an average maximum radio broadcasting distance by an communicative civilization to derive a minimum civilization density for contact between two ...
Reginald D. Smith +3 more
core +3 more sources
BMC Public HealthBackground Physical inactivity, especially in the context of the worldwide childhood obesity epidemic, is still a growing public health concern. Moreover, both physical inactivity and overweight often become ingrained and subsequently persist into ...
Alma Weimann +3 more
doaj +1 more source
Investing In Civilization [PDF]
This paper asks whether, and how, the state can solve the present crisis. The method of enquiry is to analyze what it did in the two comparable crises of 1893 and 1929.
Freeman, Alan
core +1 more source
Deep Ecology, the Radical Enlightment, and Ecological Civilization [PDF]
, 2014 With the early success of the deep ecology movement in attracting adherents and with the increasing threat of a global ecological catastrophe, one would have expected this movement to have triumphed.
Gare, Arran
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Meta Ingognita: Canadian Museum of Civilization Announces Project to Investigate Frobisher’s Voyages to Canadian Arctic [PDF]
, 2020 In a July 26, 1991 communique, the Canadian Museum of Civilization announced a Canadian-led international project to investigate archaeological sites in the Baffin Island area, once known as Meta Incognita, or the Unknown Shore.
core