This thesis presents a body of initial work on a class of routing problems that resemble classical vehicle routing problems (VRP's), but differ in a few key aspects. A particular subset of this class arises in the regional-level operation of an LTL (Less than TruckLoad) truck line using twin-trailer combinations. Other problems in the class, covered in much less detail, may be useful in plannin...

We propose a new dynamic row/column management algorithm for freight train scheduling in a single track railway system. While many papers have already been devoted to train scheduling, previously published optimization models still suffer from scalability issues, even for single track railway systems. Moreover, very few of them take into account the capacity constraints, i.e., the number of alt...

The stability of 10 active pharmaceutical ingredients was studied in SyrSpend SF PH4 or SyrSpend SF Alka at room and/or refrigerated temperature (2°C to 8°C). An oral suspension of each active pharmaceutical ingredient was compounded in low actinic plastic bottles at a specific concentration in SyrSpend SF PH4 or SyrSpend SF Alka. Samples were assessed for stability immediately after preparatio...

In this paper we propose a dynamic Stackelberg game-theoretic model for urban freight transportation planning which is able to characterize the interaction between freight and personal transportation in an urban area. The problem is formulated as a bi-level dynamic mathematical program with equilibrium constraints (MPEC) which belongs to a class of computationally challenging problems. The lowe...

In the last years the interest in urban freight mobility has increased. However, the management and control of urban freight transport requires models which simulate the transport system. In literature some models have been analysed and implemented with tools which allow the verification of the measures adopted in several cities around the world. In paper a review of measures implemented in som...

The study examines the existence of liquidity risk premia on freight derivatives returns. The Amihud liquidity ratio and bid-ask spreads are utilized to assess the existence of liquidity premia. Other macroeconomic variables are used to control for market risk. Results indicate that liquidity risk is priced and both liquidity measures have a significant role in determining freight derivatives r...

Abstract: Here city logistics terminal is defined as the facility consisting of warehouse center, marketing center, freight detaching center, distributing center and the information center. It is a link of freight transport between transport terminal such as port, railway freight station and highway entrance and the retailing facilities. The purpose of this study is to optimize the size and spa...

The issue of shared use urban freight facilities first received attention during the 1970's when it was observed that, while inter-urban freight movements were becoming increasingly efficient, there were significant diseconomies in the movement of freight via truck within urban areas. Early research suggested that shared urban freight facilities should be constructed so that trucking companies ...

The paper presents a model for the collaboration among independent freight forwarding entities. In the modern highly competitive transportation branch freight forwarders reduce their fulfillment costs by exploiting different execution modes (self-fulfillment and subcontraction). For self-fulfillment they use their own vehicles to execute the requests and for subcontracting they forward the orde...

Data from freight traffic roadside surveys in Mexican highways are analyzed in order to find consistent patterns or systematic relationships between variables characterizing this traffic. Patterns traced are validated by contrasting against new data sets, allowing so a pattern’s description refinement. In a first stage truck traffic is characterized with respect to vehicle counting size, month ...