Background It is a well-known phenomenon that nonlinearities that are inherent in the relationship among economic variables negatively affect the commonly used estimators in the econometric models. The nonlinearities cause an instability of the estimated parameters that, in particular, are...

The reduction of greenhouse gas emissions is the key action to limit global warming. An important source of greenhouse gas emissions and pollution is the inefficiency of production processes. We report results from a stochastic nonparametric efficiency analysis using directional distance...

In Germany, package holidays, which consist of a bundle of flight and accommodation services, are an important driver of consumer prices. Several challenges arise when measuring the price development of package holidays, for example the quality of accommodation, the timing of the booking, the...

The question of how to properly model production systems with unintended outputs has proven both controversial and of particular interest to the productivity and efficiency community. The paper explains why some of the arguments put forward in these controversies are hardly convincing for...

Banks are concerned with the assessment of the risk of financial distress before giving out a loan. Many researchers proposed the use of models based on the Neural Networks in order to help the banker better make a decision. The objective of this paper is to explore a new practical way based on...

Credit risk is defined as the risk that borrowers will fail to pay its loan obligations. In recent years, a large number of banks have developed sophisticated systems and models to help bankers in quantifying, aggregating and managing risk. The outputs of these models also play increasingly...

Cryptocurrencies (CCs) have become increasingly interesting for institutional investors' strategic asset allocation and will therefore be a fixed component of professional portfolios in the future. However, this asset class differs from established assets primarily in that it has a higher...

The aim of this research was to evaluate the impact of the financial aid programme at a private university in Venezuela on the outcome variables of post-graduation or social mobility, such as remuneration at the time of graduation and at present, and the probability of entering the labour...

This article studies housing rents in St. Petersburg from 1880 to 1917, covering an eventful period of Russian and world history. Digitizing over 5000 rental advertisements, we construct a state-of-the-art index – the first pre-war and pre-Soviet market data index for any Russian city. In...

Selbstständige haben während der Covid-19-Pandemie im Vergleich zu abhängig Beschäftigten besonders starke Einkommensverluste erlitten. Zu ihrer Unterstützung hat die Bundesregierung daher verschiedene Programme mit Liquiditätshilfen aufgelegt. Im Frühjahr 2020 startete der Bund die...