Große Transportdienstleister (TDL) können Einsparpotentiale in der Tourenplanung durch Bündelungseffekte erschließen. Demgegenüber sind kleinere TDL auf die Bildung kooperativer Netzwerke angewiesen, um so ihre Kapazitäten auszulasten. In dieser Arbeit wird ein neuer dezentraler...

By discriminating between a lazy manager and a career concerns hypothesis, Aghion et al. (The American Economic Review 2013, 103(1), 277-304) try to disentangle the link between innovation and institutional ownership. Citation-weighted patent counts are used as a proxy for innovation, which...

By discriminating between a lazy manager and a career concerns hypothesis, Aghion et al. (The American Economic Review 2013, 103(1), 277-304) try to disentangle the link between innovation and institutional ownership. Citation-weighted patent counts are used as a proxy for innovation, which...

Clustered covariances or clustered standard errors are very widely used to account for correlated or clustered data, especially in economics, political sciences, or other social sciences. They are employed to adjust the inference following estimation of a standard least-squares regression or...

By discriminating between a lazy manager and a career concerns hypothesis, Aghion et al. (The American Economic Review 2013, 103(1), 277-304) try to disentangle the link between innovation and institutional ownership. Citation-weighted patent counts are used as a proxy for innovation, which...

Clustered covariances or clustered standard errors are very widely used to account for correlated or clustered data, especially in economics, political sciences, or other social sciences. They are employed to adjust the inference following estimation of a standard least-squares regression or...

We consider job shop scheduling problems with release and due-dates, as well as various tardiness objectives. To date, no efficient general-purpose heuristics have been developed for these problems. genetic algorithms can be applied almost directly, but come along with apparent weaknesses.

TWe perform a novel analysis of the fitness landscape of thejob-shop scheduling problem (JSP). In contrast to other well-known combinatorial optimization problems, we show that the landscape of the JSP is non-regular, in that the connectivity of solutions is variable.

In diesem Beitrag wurde ein Rahmenmodell für elektronische Transportmärkte vorgestellt, das einen systematischen Überblick möglicher Funktionalitäten und den erreichten Entwicklungsstand aufzeigt. Auf dieser Grundlage werden typische Strukturen von Transportmärkten identifiziert und auf...

...Der Beitrag stellt den Entwicklungsstand gegenwärtig verfügbarer bzw. in der Pilotierung befindlicher Systeme vor und fokussiert dabei insbesondere auf die sicherheitstechnischen, wirtschaftlichen und rechtlichen Aspekte marktreifer Systeme sowie deren spezielle Nutzungsbereiche und der...