Results 71 to 80 of about 37,122 (259)

Redistributive land reforms, agricultural productivity, and structural change: New cross‐national evidence

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Large‐scale land reforms constitute a substantial redistribution of wealth and reallocation of agricultural land, which is a major form of asset and production input in developing countries. While land redistribution (from the rich to the poor) remains a highly controversial issue, extensive evidence on its effect is limited.
Devashish Mitra   +3 more
wiley   +1 more source

Choice experiments on land managers' participation in environmental programs: A systematic review and meta‐analysis of estimate validity

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Discrete choice experiments are increasingly being used to estimate land managers' willingness to accept participation in incentive‐based environmental programs. This is a specific application of discrete choice experiments: the estimation of willingness to accept for a private good (program participation) where respondents have to make trade ...
Anastasio J. Villanueva   +2 more
wiley   +1 more source

A DFIG low- and High-Voltage cascading failure through strategy based on GSC and RSC joint control

open access: yesInternational Journal of Electrical Power & Energy Systems
In wind power DC transmission systems, commutation failures cause significant reactive power fluctuations at the direct current (DC) transmission end, leading to sequential changes in voltage from low to high and often causing wind turbines to disconnect
Xu Zhang, Xin Xu, Yi Wang, Juan Wei
doaj   +1 more source

Fault ride-through of renewable energy conversion systems during voltage recovery

open access: yesJournal of Modern Power Systems and Clean Energy, 2016
Asymmetrical voltage swells during recovery of a short-circuit fault lead to fluctuations in the dc-link voltage of a renewable energy conversion system (RECS), and may induce reversed power flow and even trip the RECS. This paper studies characteristics
Ruiqi Li, Hua Geng, Geng Yang
doaj   +1 more source

A Dynamic Localized Adjustable Force Field Method for Real-time Assistive Non-holonomic Mobile Robotics [PDF]

open access: yes, 2015
Providing an assistive navigation system that augments rather than usurps user control of a powered wheelchair represents a significant technical challenge.
Gillham, Michael, Howells, Gareth
core   +2 more sources

Neighborhood social environments and mental health among youth and adults in public housing

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract Neighborhoods influence health in part through social processes. However, little is known about how multiple neighborhood social processes co‐occur, or about within (vs. between) neighborhood variation in social processes and health. This study asked how residents of a large public housing development describe their neighborhood and used ...
Jane Leer   +3 more
wiley   +1 more source

International White Book on DER Protection : Review and Testing Procedures [PDF]

open access: yes, 2011
This white book provides an insight into the issues surrounding the impact of increasing levels of DER on the generator and network protection and the resulting necessary improvements in protection testing practices.
Abdulhadi, Ibrahim Faiek   +7 more
core  

Definitions of community‐level approaches to address substance‐related harms and lessons learned: A systematic overview of reviews

open access: yesAmerican Journal of Community Psychology, EarlyView.
Abstract Community action focused on sociocultural and environmental influences to prevent alcohol and other drug (AOD) use and related harms is a global priority. Despite this recognition, understanding of effective community‐level approaches is limited.
Peter Gates, Andrea Zocco, Sara Farnbach
wiley   +1 more source

Investigation on influential factors on chloride concentration index of cement-based materials by pore solution expression method [PDF]

open access: yes, 2020
In this study, the effects of different factors on chloride concentration index (N-c) of cement paste were studied. The factors including chloride concentration in soaking solution, slag replacement, external applied voltage and cation ions of soaking ...
De Schutter, Geert   +3 more
core   +1 more source

Equine models in translational medicine: A comparative approach to human health

open access: yesAnimal Models and Experimental Medicine, EarlyView.
This diagram summarizes and contrasts rodent and equine models, outlining their strengths, limitations, and applications. Horses offer naturally occurring diseases, genetic and physiological similarities to humans, and suitability for longitudinal and clinical‐scale studies.
Shayan Boozarjomehri Amnieh   +1 more
wiley   +1 more source

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