The routing plan of a delivery fleet is usually developed a priori and provides an optimal (or near optimal) way of serving customers by taking into account certain constraints, such as vehicle capacity and delivery time windows. However, such plans may not cope adequately in a city logistics...

Die hohe Mobilität der Bevölkerung trägt zur Teilhabe am Arbeitsmarkt und am gesellschaftlichen Leben bei. Dabei ist der Mobilitätsbedarf stark von der Lebenssituation abhängig; so haben Studenten und Erwerbstätige die höchste Verkehrsnachfrage. Anders als in früheren Jahrzehnten wächst...

Nachdem die Fahrleistungen von in Deutschland zugelassenen Kraftfahrzeugen nach der Jahrtausendwende zunächst kaum noch zunahmen, stiegen sie im Zuge der wirtschaftlichen Belebung nach 2009 sowohl bei Nutzfahrzeugen als auch bei Personenkraftwagen deutlich. Insgesamt lagen die Fahrleistungen...

The paper introduces a multi-regional computable general equilibrium (CGE) for GMS economies. It deals with the effects of infrastructure transportation investment in commodities transportation cost of interregional trade and output production among countries in the GMS. Prior to develop the...

Eine quantitativ und qualitativ leistungsfähige Verkehrsinfrastruktur ist für die deutsche Volkswirtschaft mit ihrem hohen Grad an Arbeitsteilung, ihren vielfältigen Austauschbeziehungen und ihrer zentraleuropäischen Lage eine grundlegende Voraussetzung für wirtschaftlichen Erfolg und...

This paper investigates the effect of freight transport time savings (FTTS) on the performance of transport consuming companies. In the first part existing methods on FTTS valuation are critically discussed and their limitations are identified. Following, a conceptual model is built introducing...

Estimating the specific effects of a complete reform of the public transit system of a large city is a difficult task due to the confounding effects that will usually mask the impact of interest. In this study we estimate the impact of the complete reform of the public transport system in...

Supplier selection problem usually is very complicated, because variety of uncontrollable and unpredictable factors affect on evaluation and decision-making process. Various decision making approaches have been proposed to tackle the problem as part of a general tendering process, particularly...

The adjustment of the information obtained from household surveys to make the figures compatible with National Accounts is a non-standard and potentially questionable practice given that it alters the structure of income distribution. This paper analyzes the sensitivity of inequality and poverty...

Genetic algorithms (GAs) are appropriate when investors have the objective of obtaining mean.variance (VaR) efficient frontier as minimising VaR leads to non.convex and non.differential risk.return optimisation problems. However GAs are a time.consuming optimisation technique. In this paper, we...