Results 61 to 70 of about 2,428 (253)

SAMPLE SIZE AND STRUCTURE FOR MULTILEVEL MODELLING: MONTE CARLO INVESTIGATION FOR THE BALANCED DESIGN

open access: yesQuantitative Methods in Economics, 2013
The aim of the study is to examine the robustness of the estimates and standard errors in the case of different structure of the sample and its size. The two-level model with a random intercept, slope and fixed effects, estimated using maximum likelihood,
Edyta Łaszkiewicz
doaj  

Seeds of change: The impact of Ethiopia's direct seed marketing approach on smallholders' seed purchases and productivity

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract While multiple factors explain low adoption rates of improved varieties by small‐scale farmers in sub‐Saharan Africa, a key supply‐side constraint is the limited availability of seed embodying new traits in the volume, quality, price, and timeliness required by farmers. This constraint is partly attributable to classical failures in the market
Dawit Mekonnen   +5 more
wiley   +1 more source

INTRODUCTION: WHITHER SPATIAL ECONOMETRICS?

open access: yesJournal of Regional Science, 2012
ABSTRACT Spatial econometrics has become a mainstay for regional scientists aiming to estimate geographic spillovers in regional outcomes. Yet, many remain skeptical, especially urban economists who prefer natural experimental approaches. Their concerns revolve around identification and a general lack of a theoretical foundation in the estimation of ...
Marlon Boarnet   +3 more
openaire   +2 more sources

Climate change and perennial crop production: Evidence of yield impact and adaptation in California

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Perennial crops are economically important. They contribute to food security, providing essential nutrients that are often lacking in annual crops, and provide additional environmental benefits compared with annual crops. Despite their importance, empirical research on the impacts of climate change and adaptation on perennial crops remains ...
Yuanyuan Wen   +2 more
wiley   +1 more source

Spatial Econometrics and GIS YouTube Playlist

open access: yesREGION, 2018
This resource describes a website and playlist of YouTube videos using open source software (R, GeoDa, and QGIS) designed to help get scholars up and running with analyzing their own data.
Mark L. Burkey
doaj   +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

Bike-sharing system in Poznan – what will Web API data tell us?

open access: yesPrace Komisji Geografii Komunikacji PTG, 2020
Bike-sharing systems, also known as public bicycles, are among the most dynamically developing mobility solutions in contemporary cities.
Michał Dzięcielski   +2 more
doaj   +1 more source

Preferential trading in agriculture: New insights from a structural gravity analysis and machine learning

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract Preferential trade agreements (PTAs) contain various non‐tariff provisions, yet identifying their trade effects remains challenging because these commitments are high‐dimensional and strongly correlated within agreements. We estimated a theory‐consistent structural gravity model with domestic flows for 26 agricultural subsectors over 1988–2017
Dongin Kim, Sandro Steinbach
wiley   +1 more source

Modern crisis of youth mental health – the perspective of Poland

open access: yesActa Universitatis Lodziensis: Folia Sociologica
As young people are a vulnerable group, the prevalence of mental disorders in the population has been rapidly increasing in recent years. Not only are young people more at risk from mental disorders, but their lifelong burden accumulates for an extended ...
Agata Żółtaszek
doaj   +1 more source

Exploring bike-sharing systems in Poland co-financed from the European Union funds

open access: yesPrace Komisji Geografii Komunikacji PTG, 2020
In recent years, numerous Polish cities and municipalities have become involved in the creation of bike-sharing systems.
Michał Dzięcielski   +2 more
doaj   +1 more source

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