Results 81 to 90 of about 6,809,237 (258)

Disasters and the Health of Urban Populations [PDF]

open access: yesJournal of Urban Health: Bulletin of the New York Academy of Medicine, 2005
The average number of reported disasters worldwide, based on International Federation of the Red Cross criteria, increased from an average of 428 per year between 1994 and 1998 to 707 per year between 1999 and 2003.1 Although definitions of disasters vary, most definitions concur that disasters may be attributed to natural, technological, or human ...
openaire   +3 more sources

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

open access: yesAdvanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe   +4 more
wiley   +1 more source

Challenges and opportunities during the COVID-19 pandemic: A layered vulnerabilities perspective

open access: yesSSM: Qualitative Research in Health
The COVID-19 pandemic has had wide-ranging implications on the academic community and there have been numerous commentaries on the effects of the pandemic on qualitative health research.
Louise Meijering   +7 more
doaj   +1 more source

Electric Field‐Induced Hole‐ and Electron‐Type Flat Bands in Twisted Double Bilayer Graphene

open access: yesAdvanced Electronic Materials, EarlyView.
The electronic structure of twisted double bilayer graphene is visualized using angle‐resolved photoemission spectroscopy with micrometer spatial resolution at twists of 3.1∘$^\circ$ and 6.0∘$^\circ$ as a function of gate voltage. Tunable hybridization effects and flat band formation occurs between valence and conduction band states due to a finite ...
Zhihao Jiang   +13 more
wiley   +1 more source

Hemp Cultivation and Crop Diversification: Implications for Ecosystem Services in Kentucky

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines the ecosystem benefits of expanding hemp cultivation by assessing its impact on crop diversity. Using scenario‐based simulations and fixed‐effect panel regressions with county‐level data in Kentucky, we find that increased hemp acreage tends to enhance crop diversity, improving water quality and bird diversity.
Yunsun Park   +4 more
wiley   +1 more source

International funding for social science research on population : trends and issues

open access: yes, 1981
Describes levels and trends in funding population-related social science research provided during the period 1970-1979 by five primary donors: US-AID, UNFPA, Ford Foundation, Rockefeller Foundation and ...
Population Council, Baron, B.F.
core   +1 more source

Moderation of social participation in the relationship between disaster exposure and depression among older adults: evidence from LASI Survey, 2017–18

open access: yesDiscover Public Health
Background The two phenomena colliding in this twenty-first century are population ageing and climate change. Moreover, the surge in disaster recurrence, either natural or artificial, poses a challenge to older adults and will further aggravate their ...
Sumit Narayan Dwivedi   +2 more
doaj   +1 more source

Urban growth and population densities [PDF]

open access: yesDemography, 1973
Abstract Differences in the distribution of population within and across metropolitan areas are seen as a product of the development of the metropolis during different transportation epochs. Age cohorts of census tracts in Cleveland, Ohio, may be split into three groups of development patterns based on the time of their early development:
openaire   +2 more sources

Classical models of urban population density. The case of Barcelona Metropolitan Area [PDF]

open access: yes
In this paper, we study the classical functional forms density-distance and its relation with the suburbanization for the Barcelona Metropolitan Area.
Jordi Suriñach-Caralt   +1 more
core  

[Assessment of urban location factors from remote sensing] [PDF]

open access: yes, 2006
Highly-dynamic, explosively and unmanageably growing megacities arise throughout the world. This rapid alteration within the urban environment often results in a lack of reasonable information for city planning, risk management or site selection.
Taubenböck, Hannes, Roth, Achim
core  

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