Results 141 to 150 of about 21,518 (299)

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

American 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, Gashaw T. Abate, Seid Yimam, Rui Benfica, David J. Spielman, Frank Place   +5 more
wiley   +1 more source

The Granger causality analysis of the impact of climatic factors on visceral leishmaniasis in northwestern Iran in 1995-2019. [PDF]

J Parasit Dis, 2021
Hamta A, Saghafipour A, Zanjirani Farahani L, Moradi Asl E, Ghorbani E.   +4 more
europepmc   +1 more source

Carbon emissions, energy consumption and industrial growth in Bangladesh: Empirical evidence from ARDL cointegration and Granger causality analysis

, 2017
This research aims to examine the empirical cointegration, long and short run dynamics and causal relationships between carbon emissions, energy consumption and industrial growth in Bangladesh over the period of 1972–2011.
Kashem, Mohammad Abul, Rahman, Mohammad Mafizur, Mohammad Mafizur Rahman, Mohammad Abul Kashem   +3 more
core   +1 more source

Accounting for animal health in efficiency analysis: An application to Swedish dairy farms

American Journal of Agricultural Economics, EarlyView.
Abstract Poor animal health is a central concern in modern livestock production. Despite the necessity to incorporate animal health in efficiency analysis, the theoretical and empirical developments are limited on this subject. This article appropriately characterizes the axiomatic properties of animal health within a production framework.
Frederic Ang, Enoch Owusu‐Sekyere, Karin Alvåsen, Helena Hansson   +3 more
wiley   +1 more source

Altered amygdala effective connectivity in migraine without aura: evidence from resting-state fMRI with Granger causality analysis. [PDF]

J Headache Pain, 2021
Huang X, Zhang D, Wang P, Mao C, Miao Z, Liu C, Xu C, Yin X, Wu X.   +8 more
europepmc   +1 more source

Testing The Random Walk Hypothesis: An Application in the BRIC Countries and Turkey

Romanian Economic Journal, 2015
This paper investigates the weak form efficiency in the BRIC countries and Turkey with use of autocorrelation analysis, unit root tests, Johansen cointegration and Granger causality test.
Halime Temel Nalın , Sevinç Güler
doaj  

Granger-Causal Analysis of VARMA-GARCH Models

, 2012
Recent economic developments have shown the importance of spillover and contagion effects in financial markets. Such effects are not limited to relations between the levels of financial variables but also impact on their volatility. I investigate Granger causality in conditional mean and conditional variances of time series.
openaire   +2 more sources

The Relation of Different Concepts of Causality in Econometrics [PDF]

Granger and Sims non-causality (GSNC) are compared to non-causality based on concepts popular in the microeconometrics and programme evaluation literature (potential outcome non-causality, PONC).
Michael Lechner
core  

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

American 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, Abdulaziz B. Shifa, Lan Anh Tong, Mehmet A. Ulubasoglu   +3 more
wiley   +1 more source

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

American 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, Angel Perni, Jesus Barreiro‐Hurle   +2 more
wiley   +1 more source