This paper introduces a cooperative parallel metaheuristic for the capacitated vehicle routing problem. The proposed metaheuristic consists of multiple parallel tabu search threads that cooperate by asynchronously exchanging ...

This paper presents a parallel tabu search algorithm that utilizes several different neighborhood structures for solving the capacitated vehicle routing problem. Single neighborhood or neighborhood combinations are ...

Government reforms such as contracting-out continue to influence public service provision within infrastructure sectors. Contracting-out involves a detachment of the operators from political decision-making and the creation ...

Long distances, sparse infrastructure, and adverse environmental conditions make the offshore emergency preparedness system in the High North a big and yet unsolved challenge. This applies in particular to the personnel ...

Rapporten ser på hvordan bompenger blir behandlet i planlegging av og i samfunnsøkonomiske analyser av vegprosjekter. Vi søker å belyse den empiriske balansen mellom innkrevingskostnader og avvisingstap ved bompengefinansiering ...

This article addresses the question of how planners’ use and non-use of expert knowledge affect the content and goal achievement potential of plans, and discusses how changes in planners’ and researchers’ practices can ...

Internasjonale miljøforkjempere som ønsker et forbud mot økt kinesisk import av kull og redusert produksjon av norsk naturgass tar grundig feil. Det faktum at Kina driver opp kullprisen i verdensmarkedet og Norge presser ...

I dag og i årene fremover har helsevesenet store omsorgsutfordringer knyttet til økningen av antall eldre i befolkningen. En stor andel eldre avslutter livet i sykehjem, og de fleste har pårørende hos seg i tiden rundt ...

In this paper we use an Average Conditional Exceedance Rate (ACER) method to model the tail of the price change distribution of daily spot prices in the Nordic electricity market, Nord Pool Spot. We use an AR-GARCH model ...