Results 231 to 240 of about 2,744,037 (263)

The Application of the Difference-in-Differences Model in Strategic Management Research

Academy of Management Proceedings, 2021
Difference-in-differences (DD) models allow researchers to estimate changes between treatment and control groups after exogenous interventions or shocks.
Chi Hon Li, S. Trevis Certo
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The Differential Impact of the 2000 Canadian Graphic Warning Label Policy on Smoking Prevalence by Sex and Education: A Difference-in-Difference-in-Difference Model

Nicotine & Tobacco Research, 2022
AbstractIntroductionUsing a quasiexperimental design, we compared the impact of the 2000 Canadian introduction of graphic warning labels (GWLs) on differences in smoking prevalence by sex and education, to the United States, where no GWLs were introduced.MethodsWe pooled 1999–2004 data from the Canadian Tobacco Use Monitoring Survey and the U.S ...
Bukola Usidame, Gang Meng, James F Thrasher, Mary E Thompson, Geoffrey T Fong, Nancy L Fleischer   +5 more
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Different Models, Different Trees: The Geographic Origin of PTLV-I

Molecular Phylogenetics and Evolution, 1999
Using nucleotide sequences from three genomic regions of the human and simian T-cell lymphotropic virus type I (HTLV-I/STLV-I)-consisting of 69 sequences from a 140-bp segment of the pol region, 98 sequences from a 503-bp segment of the LTR, and 154 sequences from a 386-bp segment of the env region-we tested two hypotheses concerning the geographic ...
C R, Kelsey, K A, Crandall, A F, Voevodin   +2 more
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Different languages, different cultures, different language ideologies, different linguistic models

Journal of Multicultural Discourses, 2009
Abstract In this paper it is argued that different languages and different cultures have different language ideologies. Language ideologies are pervasive in all forms of thinking and particularly in linguistic models, bringing to bear upon the way how language is studied.
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Input-output + econometric and econometric + input-output: Model differences or different models?

1998
Integrated input-output and econometric models are becoming increasingly widespread. The integrated model attempts to model the dynamic (lagged) time path of the economy which may be in a continual state of disequilibrium as it tracks toward continually shifting equilibria, therefore providing a more realistic picture of the dynamic characteristics of ...
West, Guy R., Jackson, Randall W.
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Different Worlds, Different Cooperation Models

Development Policy Review
Abstract Three key trends will shape the future development cooperation system: increasing fragmentation in both geopolitics and the aid architecture; growing pressure on public sectors across countries at different income levels; and the high degree of interconnectedness among societies worldwide. In both the Global
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Scope of neurological practice: different places, different models

Neurology, 2003
To the Editor: I read with interest and bits of curiosity Dr. Culebras’ article1 on the current situation of pediatric neurology in Italy. Being one of the pediatricians who “along with Dr. Fois” took part in the foundation of “modern child neurology in Italy,” I would like to express my personal opinion on such an intriguing topic.
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Identification in Nonlinear Difference in Difference Models with Multivalued Treatment Outcomes

SSRN Electronic Journal, 2011
We study the conditions to identify the joint distribution of outcomes for the treated group in absence of any treatment, avoiding to make assumptions that allow to identify each counterfac- tual marginal distribution. Our starting point is Athey & Imbens (2006)'s Changes-In-Changes Model, but we generalize it letting the treatment also affect the ...
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Assessing the effectiveness of global protected areas based on the difference in differences model

Ecological Indicators, 2021
Yuhao Feng, Haojie Su, Jiamin Pan
exaly  

The effect of urban innovation performance of smart city construction policies: Evaluate by using a multiple period difference-in-differences model

Technological Forecasting and Social Change, 2022
Qingbin Guo
exaly