The work at hand tries to identify factors that explain accidents on German Autobahn connectors. To find these factors the empirical study makes use of count data models. The findings are based on a set of 197 ramps, which we classified into three distinct types of ramps. For these ramps...

This study examined the relationship between individual differences (Big Five personality traits, self-esteem, loneliness, narcissism, shyness, and boredom) and social networking behaviours in two samples of Australian undergraduate students, one enrolled on-campus (n = 93) and another in a...

This article addresses the mediating effect of corruption on the influence of stringency of environmental regulation on firms' voluntary environmental performance. Using panel data from adoption of the EU Eco-Management and Audit Scheme (EMAS) across European Union countries from 1995 to 2011,...

The rootogram is a graphical tool associated with the work of J. W. Tukey that was originally used for assessing goodness of t of univariate distributions. Here we show that rootograms are also useful for diagnosing and treating issues such as overdispersion and/or excess zeros in regression...

This article contributes to immigration literature by applying a Random Utility Maximization model to derive a migration gravity model that explains factors affecting migration outflows per administrative unit and region for the country of Colombia. Negative binomial cross-sectional estimates...

Feed-in tariffs under the Renewable Energy Sources Act, the so-called Erneuerbare-Energien-Gesetz (EEG), have triggered a massive expansion of electricity from renewable energy sources in Germany over the last decade. The increase in non-competitive renewable power generation though went hand in...

Estimation of consumption intensity of African indigenous vegetables (AIVs) is important to understand how their utilization can be enhanced at the household level. The study evaluated consumption intensity of leafy AIVs using the zero-inflated negative binomial regression model. A multistage...

The theoretical population ecology constructs of commensalism, parasitism, and amensalism are applied in an analysis of the Knowledge Cluster Initiative (KCI), a unique social experiment establishing university-business-government alliances for knowledge-intensive innovative clusters in Japan....