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Logistics and Supply Chain Innovation

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

Eine vertiefte Darstellung von Schienenverkehrsmitteln erfolgt in einem eigenen Abschnitt. This paper elaborates on the definitions of inter and multi-modal transport, as well as their differences in terms of performance. In this paper, we consider three classical and two recent formulations of single allocation hub location problems - i. Solving larger instances of these problems to optimality is difficult because the inherent quadratic structure of the problem has to be linearized: This leads to a sharp rise in the number of variables. The aim is to choose a set of hubs out of a given set of possible hubs and connect every depot to a hub so that the total transport costs for exchanging shipments between the depots are minimised. The conference was jointly organized by the Efficiency Cluster Logistics and the Fraunhofer Institute for Material Flow and Logistics. Typical applications for hub networks are in cargo, air freight, and postal and parcel transport services.

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Efficiency and innovation in logistics : proceedings of the International Logistics Science Conference (ILSC) 2013 held in Dortmund, September 2013 (eBook, 2014) [aimtheory.com]

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

Instead of measuring the transport costs as a linear function of the volume, integer variables for the number of used vehicles are introduced. The eigenbasis in terms of polynomials will be computed by means of representations of sl 2,C. . This volume presents up-to-date logistics research in all its diversity and interconnectedness. The E-mail message field is required. The Program Committee used a double blind review process to choose the 12 strongest contributions, which were then grouped in four areas: - Sustainability logistics, including electric mobility, smart information, communication technologies and corporate social responsibility management - Intralogistics, including the detection of autonomous vehicles, 3D computer vision and sensor functions for forklift trucks - Transport logistics, including distribution centre organization, delivery performance in railway systems and logistics reference modelling - Logistics facilities, including environmental impact of container ports, parcel sorting systems and model based systems engineering. Our computational experiments for some benchmark instances demonstrate the strength of the new approach.

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Efficiency and Innovation in Logistics : Uwe Clausen : 9783319033204

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

In particular, we apply a rather basic algorithmic idea and perform the separation of the classical subtour elimination constraints on integral solutions only. The Program Committee used a double blind review process to choose the 12 strongest contributions, which were then grouped in four areas: - Sustainability logistics, including electric mobility, smart information, communication technologies and corporate social responsibility management - Intralogistics, including the detection of autonomous vehicles, 3D computer vision and sensor functions for forklift trucks - Transport logistics, including distribution centre organization, delivery performance in railway systems and logistics reference modelling - Logistics facilities, including environmental impact of container ports, parcel sorting systems and model based systems engineering. Mastering these challenges requires a scientific viewpoint on logistics, but always with applications in mind. Im Rahmen dieses Kapitels wird zunächst eine kurze Einführung in die mathematische Optimierung und hier insbesondere in den Teilbereich der mathematischen Modellierung gegeben, da dieser die wichtige Funktion der Schnittstelle zwischen einem zu optimierenden logistischen Problem und den dafür zu entwickelnden Lösungsverfahren zukommt. This volume presents up-to-date logistics research in all its diversity and interconnectedness. The Institute of Transport Logistics developed the simulation suite ContSim in close collaboration with the Mindener Hafen GmbH which permits the modelling and simulation of material and information flows in an container terminal. Instead, a small number of nodes are upgraded to hubs that serve as transshipment points.

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Efficiency and Innovation in Logistics : Uwe Clausen : 9783319033204

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

This is of course computationally more complex. Hence the planning of vehicles and hub capacities should take this into account. All handling and controlling processes of the terminal can be modeled and parameterized. Here, it turns out that using some of the stronger subtour elimination constraints helps. New technologies emerge, new planning methods and algorithms are developed, only to face a market with a growing complexity and the need of weighting monetary costs against ecological impact.

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Efficiency and Innovation in Logistics : Proceedings of the International Logistics Science Conference (ILSC) 2013 (eBook, 2014) [aimtheory.com]

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

The editors carefully selected contributions from a wide variety of projects, which were carried out in both the Dinalog cluster and the Effizienzcluster LogistikRuhr. At the end, we analyze the situation on 3-manifolds and give some examples. Mastering these challenges requires a scientific viewpoint on logistics, but always with applications in mind. For that, we consider a classical Single Allocation Hub Location Problem and replace the discount factor by integer-valued variables for the number of vehicles in use. To be cost-efficient it is necessary to bundle and unbundle goods on their way, using depots as so-called hubs.

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Efficiency and Innovation in Logistics : Proceedings of the International Logistics Science Conference (ILSC) 2013: : 9783319013787: Telegraph bookshop

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

Es folgt Einführung in die Komplexitätstheorie, die einen theoretischen Rahmen für die Einschätzung der zur Lösung von Optimierungsproblemen notwendigen Ressourcen liefert. New technologies emerge, new planning methods and algorithms are developed, only to face a market with a growing complexity and the need of weighting monetary costs against ecological impact. If we require every commodity to be routed as a whole and not split and routed over different arcs you have to introduce binary variables for the flow of each commodity on each arc. It consists of two parts: A number of hubs are chosen out of a given set of depots; then the given transport relations are individually assigned to two hubs, one hub or direct transport. Daher wird zunächst der Verkehrsweg Schiene mit seinem physikalischen Eigenschaften und Einschränkungen betrachtet.

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Efficiency and innovation in logistics : proceedings of the International Logistics Science Conference (ILSC) 2013 held in Dortmund, September 2013 (eBook, 2014) [aimtheory.com]

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

Failures in the material flow can be identified and new strategies can be tested in a virtual model, without cost-intensive real time tests. We show that the sum of inner turning angles in an optimal solution always equals. They formalise the challenge of mutually exchanging shipments between a large set of depots. The Program Committee used a double blind review process to choose the 12 strongest contributions, which were then grouped in four areas: - Sustainability logistics, including electric mobility, smart information, communication technologies and corporate social responsibility management - Intralogistics, including the detection of autonomous vehicles, 3D computer vision and sensor functions for forklift trucks - Transport logistics, including distribution centre organization, delivery performance in railway systems and logistics reference modelling - Logistics facilities, including environmental impact of container ports, parcel sorting systems and model based systems engineering. The importance of logistics in all its variations is still increasing. Abstract: The importance of logistics in all its variations is still increasing.

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Efficiency and Innovation in Logistics : Proceedings of the International Logistics Science Conference (ILSC) 2013 (eBook, 2014) [aimtheory.com]

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

It begins by a discussion on fundamentals and explains the relevant terms. It is faster than the other approaches for medium-sized instances of one of the variants. Thus, it enables to optimize the operating strategies of a terminal with simulation. ContSim can also be used as a daily control panel to plan the deployment and the operating strategy mix for the upcoming day. For problems like the uncapacitated single allocation p-hub median problem and the uncapacitated single allocation hub location problem, we present the first optimal results for instances of this size. In this paper an introduction to the principles and methods used in logistics and supply chain management is presented.

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Logistics and Supply Chain Innovation

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

If shipments have to be transported between many sources and sinks, direct connections from each source to each sink are often too expensive. Most of the hub location literature consider models with simplified cost structure and complete knowledge of the shipments. Mathematical formulation of typical transport and logistics-related problems is also presented followed by a discussion on the concept of sustainability. In this paper an introduction to the principles and methods used in logistics and supply chain management is presented. The idea is as follows: Considering the whole network as collection of n trees sending goods to a chosen depot, we improve the total costs step by step: For that we always take the edge with most expensive transport and try to find a new route for it. Anschließend werden exakte und heuristische Optimierungsverfahren eingeführt. If the number of vertices is even, the optimal value lies between 0 and and these two bounds are tight, which can be shown by an analytic solution for a regular n-gon.

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Efficiency and Innovation in Logistics : Uwe Clausen : 9783319033204

efficiency and innovation in logistics clausen uwe ten hompel michael meier j fabian

New technologies emerge, new planning methods and algorithms are developed, only to face a market with a growing complexity and the need of weighting monetary costs against ecological impact. The conference was jointly organized by the Efficiency Cluster Logistics and the Fraunhofer Institute for Material Flow and Logistics. Mastering these challenges requires a scientific viewpoint on logistics, but always with applications in mind. For solving the resulting Lagrangean subproblem, the given problem structure is exploited: it can be decomposed into smaller subproblems that can be solved efficiently by combinatorial algorithms. Our aim is to develop a strategic plan which is cost-optimal for given average shipping volumes.

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