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A cross entropy multiagent learning algorithm for solving vehicle routing problems with time windows

Ma, Tai-Yu - HAL - 2011

The vehicle routing problem with time windows (VRPTW) has been the subject of intensive study because of its importance in real applications. In this paper, we propose a cross entropy multiagent learning algorithm, which considers an optimum solution as a rare event to be learned. The routing...

Persistent link: https://www.econbiz.de/10009208414

The Concept of Appropriation as a Heuristic for Conceptualising the Relationship between Technology, People and Organisations.

Baillette, Paméla; Kimble, Chris - HAL - 2008

The stated aim of this conference is to debate the continuing evolution of IS in businesses and other organisations. This paper seeks to contribute to this debate by exploring the concept of appropriation from a number of different epistemological, cultural and linguistic viewpoints to allow us...

Persistent link: https://www.econbiz.de/10008792833

Keynesian hospitals? Public employment and political pressure

Clark, Andrew E.; Milcent, Carine - HAL - 2008

This paper uses an unusual administrative dataset covering the universe of French hospitals to consider hospital … employment: this is consistently higher in public hospitals than in Not-For-Profit or private hospitals, even controlling for …-hospital employment is positively correlated with the local unemployment rate, whereas no relationship is found in non-Public hospitals …

Persistent link: https://www.econbiz.de/10010738804

Public Employment and Political Pressure: The Case of French Hospitals

Clark, Andrew E.; Milcent, Carine - HAL - 2011

This paper uses an unusual administrative dataset covering the universe of French hospitals to consider hospital … employment: this is consistently higher in public hospitals than in not-for-profit (NFP) or private hospitals, even controlling … for a number of measures of hospital output. NFP hospitals serve as a benchmark, being very similar to public hospitals …

Persistent link: https://www.econbiz.de/10010821022

Reducing the debt : is it optimal to outsource an investment?

Espinosa, Gilles Edouard; Hillairet, Caroline; … - HAL - 2013

We deal with the problem of outsourcing the debt for a big investment, according two situations: either the firm outsources both the investment (and the associated debt) and the exploitation to a private consortium, or the firm supports the debt and the investment but outsources the...

Persistent link: https://www.econbiz.de/10010723292

Modeling and Solving Alternative Financial Solutions Seeking

Frenod, Emmanuel; Gouigoux, Jean-Philippe; Touré, Landry - HAL - 2013

In this paper we build a method to optimize Multi-Year Prospective Budgets. First we present a systemic model of Local Community Finances. Then, from two acceptable Multi-Year Prospective Budgets the method implements a Genetic Algorithm to generate a collection of admissible Multi-Year...

Persistent link: https://www.econbiz.de/10010726419

Existence of Solutions in Continuous-time Optimal Growth Models

D'Albis, Hippolyte; Gourdel, Pascal; Van, Cuong Le - HAL - 2008

This paper studies the existence of solutions in continuous time optimization problems. It provides a theorem whose …

Persistent link: https://www.econbiz.de/10010750563

Robust viable management of a harvested ecosystem model

Regnier, Esther; Lara, Michel De - HAL - 2013

The Word Summit on Sustainable Development (Johannesburg, 2002) encouraged the application of the ecosystem approach by 2010. In this perspective, we propose a theoretical management framework that deals jointly with i) ecosystem dynamics, ii) conflicting issues of production and preservation...

Persistent link: https://www.econbiz.de/10011025654

Simulation and optimization methods for logistics pooling in the outbound supply chain

Gonzalez-Feliu, Jesus; Peris-Pla, Carlos; Rakotonarivo, Dina - HAL - 2010

systems, as well as a simulation method for strategic planning optimization. This method is based on a twostep constructive … heuristic in order to estimate for big instances the transportation and storage costs at a macroscopic level. Four possible …

Persistent link: https://www.econbiz.de/10008792050

Comment optimiser l'achat de transport à valeur ajoutée ? Le cas de Roche Diagnostics France

Fanget, Coralie - HAL - 2013

Une entreprise qui fonde sa stratégie sur la différenciation par le haut se doit de respecter un certain nombre d'engagements permettant de légitimer sa position. En effet, sur un marché concurrentiel, un positionnement haut de gamme doit pouvoir se justifier aux yeux des clients par une...

Persistent link: https://www.econbiz.de/10010898934