Wastewater systems in developed cities contribute significantly to public health. The related systems are energy and resource intensive and do not recover nutrients in an efficient and effective way. Separating wastewater to greywater and blackwater at the source and exploiting organic municipal...

Sustainability is an international issue with increasing concern and becomes a crucial driver for the industry in international competition. Sustainability encompasses the three dimensions: environment, society and economy. This paper presents the results from a sustainability assessment of a...

This paper shows that applying simple employment-weighted OLS estimation to Davis - Haltiwanger - Schuh (1996) firm level job creation rates taking the values 2 and -2 for entering and exiting firms, respectively, provides biased and inconsistent parameter estimates. Consequently, we argue that...

We consider estimation and inference for a regression coefficient in panels with interactive fixed effects (i.e., with a factor structure). We show that previously developed estimators and confidence intervals (CIs) might be heavily biased and size-distorted when some of the factors are weak. We...

Seit Jahresbeginn 2006 steht der US-Dollar unter Abwertungsdruck. Dadurchverändert sich die internationale Wettbewerbsfähigkeit von Ländern und Unternehmen. Dieser Beitrag zeigt kurz verschiedene betriebliche Währungsrisiken auf und geht dann auf langfristig relevante ökonomische...

Die Arbeit befasst sich mit Anreiz-, Kontroll- und Steuerungsmechanismen bei PPP-Projekten und gibt konkrete Empfehlungen für die Gestaltung des Planungsprozesses sowie der Outputspezifikationen und Vergütungsmechanismen in PPP-Verträgen. Dabei wird die grundsätzliche Wirkungsweise des in...

Cost management is a process that contributes to increases in efficiency that have an impact on a finished product. Comprehensive cost management uses information that is created by the cost accounting system and new concepts of measurement and valuation of product manufacturing costs. This...

About one third of global edible food is lost or wasted along the supply chain, causing the wastage of embedded natural and economic resources. Life cycle methodologies can be applied to identify sustainable and viable prevention and valorization routes needed to prevent such inefficiencies....

Converging business, sustainability, and technology is a challenge that manufacturing firms face to create value and be competitive. Energy- and raw material-intensive manufacturing industries are particularly aware of environmental issues and circular economy practices due to the large amounts...