This paper models the firm's production process as a system of simultaneous technologies for desirable and undesirable outputs. Desirable outputs are produced by transforming inputs via the conventional transformation function, whereas (consistent with the material balance condition) undesirable...

The aim of this study is to investigate whether trust in one's employer and also perceived employability are able to reduce employees' perceived post-restructuring job insecurity. Both, quantitative job insecurity (insecurity over the continuity of a job) and qualitative job insecurity...

This paper investigates determinants of convergence in GDP per capita in the euro area and the EU between 1995 and 2021. It finds that the COVID-19 crisis temporarily slowed convergence but the estimated negative impact is significantly smaller than during the global financial crisis. Diverging...

In reaction to disruptions of the Single Market, the European Commission put forward an emergency instrument. It proposes far-reaching measures in order to maintain the proper functioning of the Single Market and ensure the supply and distribution of goods and services. The dirigiste...

This article aims to define and measure responsible corporate behaviour towards consumers in EU countries by defining an index of responsible corporate behaviour towards consumers and to establish the impact of Geert Hofstede's cultural dimensions on the responsible behaviour of organisations...

Der hier vorgestellte Digitalisierungsindex misst den Grad der Digitalisierung von Unternehmen in Deutschland, differenziert dabei nach Branchen und ordnet den Digitalisierungsgrad in Kategorien ein. Es zeigt sich, dass die Informations- und Kommunikationstechnologie mit Abstand am stärksten...

Quantitative researchers often use Student's t-test (and its p-values) to claim that a particular regressor is important (statistically significantly) for explaining the variation in a response variable. A study is subject to the p-hacking problem when its author relies too much on formal...

The exchange rate is influenced by multiple national and international macroeconomic factors, which generates high levels of uncertainty. The objective of this research is the construction of ARIMA-GARCH and ARIMAX-GARCH models as a tool for the forecast of the exchange rate in Colombia from the...

Robust model predictive control approaches and other applications lead to nonlinear optimization problems defined on (scenario) trees. We present structure-preserving Quasi-Newton update formulas as well as structured inertia correction techniques that allow to solve these problems by...