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Capacity and Incentive Factors Affecting Individual Scientist’s Productivity: A Comparative and Multilevel Analysis of Nigeria and Ghana Agricultural Research Systems

Ragasa, Catherine - International Association of Agricultural Economists - IAAE - 2012

This paper analyzes incentive and capacity factors that explain variations in research productivity among 344 agricultural scientists in Nigeria and 237 agricultural scientists in Ghana using multilevel analysis. Education level, years of experience, research linkages, and perceived adequacy of...

Persistent link: https://www.econbiz.de/10010913905

Friends Without Benefits? New EMU Members and the "Euro Effect" on Trade

Mika, Alina; Zymek, Robert - 2017

We re-visit the evidence about the trade benefits of European Monetary Union (EMU), focusing on the experience of countries which adopted the common currency since 2002. Based on “state of the art” gravity estimations for the period 1992-2013, we reach three main conclusions. First,...

Persistent link: https://www.econbiz.de/10011615863

The discontinuous integration of Western Europe's heterogeneous market for corporate control from 1995 to 2007

Frey, Rainer - 2010

existing lack of integration in Europe may not be a result of missing institutional reforms. In the Poisson estimations, the …

Persistent link: https://www.econbiz.de/10010271607

The discontinuous integration of Western Europe's heterogeneous market for corporate control from 1995 to 2007

Frey, Rainer - 2010

existing lack of integration in Europe may not be a result of missing institutional reforms. In the Poisson estimations, the …

Persistent link: https://www.econbiz.de/10010301320

Modelling and Estimating Individual and Firm Effects with Count Panel Data

Angers, Jean-François; Desjardins, Denise; Dionne, Georges - Centre Interuniversitaire sur le Risque, les Politiques … - 2015

In this article, we propose a new parametric model for the modelling and estimation of accident distributions for drivers working in fleets of vehicles. The analysis uses panel data and takes into account individual and fleet effects in a non-linear model. Our sample contains more than 456,000...

Persistent link: https://www.econbiz.de/10011276130

Robust estimation of zero-inflated count models

Staub, Kevin E.; Winkelmann, Rainer - 2009

to this development, as zero-inflated Poisson or zero-inflated Negative Binomial Maximum Likelihood estimators are not … robust to misspecification. In contrast, simple Poisson regression provides consistent parameter estimates even in the … presence of excess zeros. The advantages of the Poisson approach are illustrated in a series of Monte Carlo simulations. …

Persistent link: https://www.econbiz.de/10010315516

Simple tests for exogeneity of a binary explanatory variable in count data regression models

Staub, Kevin E. - 2009

This article investigates power and size of some tests for exogeneity of a binary explanatory variable in count models by conducting extensive Monte Carlo simulations. The tests under consideration are Hausman contrast tests as well as univariate Wald tests, including a new test of notably easy...

Persistent link: https://www.econbiz.de/10010315604

Hospital emergency room savings via health line S24 in Portugal

Simões, Paula; Gomes, Sérgio; Natário, Isabel - In: Econometrics 9 (2021) 1, pp. 1-10

measured in each neighbor, by means of a Bayesian Poisson spatial Durbin model. …

Persistent link: https://www.econbiz.de/10012696313

On Some Distributions Arising from Certain Generalized Sampling Schemes

Panaretos, John; Xekalaki, Evdokia - Volkswirtschaftliche Fakultät, … - 1986

With the notion of success in a series of trials extended to refer to a run of like outcomes, several new distributions are obtained as the result of sampling from an urn without replacement or with additional replacements. In this context, the hypergeometric, negative hypergeometric,...

Persistent link: https://www.econbiz.de/10005787191

Creating synthetic discrete-response regression models

Hilbe, Joseph M. - In: Stata Journal 10 (2010) 1, pp. 104-124

in data, as well as how to best interpret various statistics associated with a modeling situation. In this article, I …

Persistent link: https://www.econbiz.de/10008518212