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Engevall, Stefan
Publications (6 of 6) Show all publications
Fredriksson, A., Abrahamsson, M., Kjellsdotter-Ivert, L., Huge-Brodin, M. & Engevall, S. (2022). Slutrapport Fossilfri Bygglogistik. Borlänge, Sverige: Trafikverket
Open this publication in new window or tab >>Slutrapport Fossilfri Bygglogistik
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2022 (Swedish)Report (Other academic)
Abstract [sv]

Byggtransporter står för en betydande andel av CO2-utsläppen i byggprojekt (ca 10%) och en bättre logistik leder till lägre utsläpp, mindre trängseleffekter och lägre kostnader. Projektet Fossilfri Bygglogistik, finansierat av Trafikverket genom Triple F, har 2019-2021 studerat potentialen i att minska utsläppen från byggtransporter med förbättrad logistik baserat på ett systemsynsätt. Projektet har varit ett samarbete mellan Linköpings universitet, VTI, Logistikia, Energifabriken, Renall, Almroths, SanktKors, Stångåstaden, Hyresbostäder, Peab, NCC, RagnSells, PreZero, Lambertsson och Byggföretagen.

Projektet har utgått från tre frågeställningar:

• Vad är potentialerna med samordnad bygglogistik och vad krävs för att hämta hem dessa?

• Vilka metoder/lösningar är användbara för att nå målet om fossilfrihet?

• Vad är rollfördelningen mellan aktörer. som är delaktiga i ett bygglogistiksystem, och behöver den förändras för att uppnå fossilfrihet

Projektet har tre huvudsakliga resultat:

1) Utvärdering av piloter såsom nyttan av bygglogistiklösningar i olika projekt och för olika aktörer, mätetal för byggtransporter och möjliga data för att följa upp, samt effekterna av en HVO-tank på site.

2) Potentialerna i att arbeta med en fossilfri bygglogistik utifrån ett systemperspektiv där inte bara enskilda byggen studeras utan även större bygglogistiksystem samt hur man kan beräkna CO2 emissionerna från bygglogistiken för den samlade byggvolymen i en stad.

3) En beskrivning av hur aktörerna i bygglogistiksystemet och hur de påverkar olika åtgärder för att minska utsläppen genom sina respektive roller har också identifierats.En av de viktigaste slutsatserna är att det idag saknas rätt förutsättningarna för att implementera en fossilfri bygglogistik i stor skala. Det saknas gemensamma målbilder för logistiken.

Place, publisher, year, edition, pages
Borlänge, Sverige: Trafikverket, 2022. p. 24
Keywords
Bygglogistik; Systemsynsätt; Miljö
National Category
Transport Systems and Logistics Construction Management
Identifiers
urn:nbn:se:liu:diva-184963 (URN)
Projects
Fossilfri Bygglogistik
Funder
Swedish Transport Administration, 2019.2.2.5
Available from: 2022-05-14 Created: 2022-05-14 Last updated: 2022-06-30Bibliographically approved
Dahlberg, J., Engevall, S., Göthe-Lundgren, M., Jörnsten, K. & Rönnqvist, M. (2019). Incitements for transportation collaboration by cost allocation. Central European Journal of Operations Research, 27(4), 1009-1032
Open this publication in new window or tab >>Incitements for transportation collaboration by cost allocation
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2019 (English)In: Central European Journal of Operations Research, ISSN 1435-246X, E-ISSN 1613-9178, Vol. 27, no 4, p. 1009-1032Article in journal (Refereed) Published
Abstract [en]

In this paper, we focus on how cost allocation can be used as a means to create incentives for collaboration among companies, with the aim of reducing the total transportation cost. The collaboration is assumed to be preceded by a simultaneous invitation of the companies to collaborate. We make use of concepts from cooperative game theory, including the Shapley value, the Nucleolus and the EPM, and develop specific cost allocation mechanisms aiming to achieve large collaborations among many companies. The cost allocation mechanisms are tested on a case study that involves transportation planning activities. Although the case study is from a specific transportation sector, the findings in this paper can be adapted to collaborations in other types of transportation planning activities. Two of the cost allocation mechanisms ensure that any sequence of companies joining the collaboration represents a complete monotonic path, that is, any sequence of collaborating companies is such that the sequences of allocated costs are non-increasing for all companies.

Place, publisher, year, edition, pages
Springer, 2019
Keywords
Collaboration, Transportation planning, Monotonic Path, Cost Allocation, Cooperative game theory
National Category
Transport Systems and Logistics
Identifiers
urn:nbn:se:liu:diva-121558 (URN)10.1007/s10100-018-0530-2 (DOI)000482948100006 ()
Funder
Swedish Energy AgencyVinnova
Note

Funding agencies: Swedish Energy Agency and Swedens innovation agency (Vinnova)

Available from: 2015-09-24 Created: 2015-09-24 Last updated: 2019-09-23Bibliographically approved
Dahlberg, J., Göthe-Lundgren, M. & Engevall, S. (2017). A note on the nonuniqueness of the Equal Profit Method. Applied Mathematics and Computation, 308, 84-89
Open this publication in new window or tab >>A note on the nonuniqueness of the Equal Profit Method
2017 (English)In: Applied Mathematics and Computation, ISSN 0096-3003, E-ISSN 1873-5649, Vol. 308, p. 84-89Article in journal (Refereed) Published
Abstract [en]

When a set of players cooperate, they need to decide how the collective cost should be allocated amongst them. Cooperative game theory provides several methods or solution concepts, that can be used as a tool for cost allocation. In this note, we consider a specific solution concept called the Equal Profit Method (EPM). In some cases, a solution to the EPM is any one of infinitely many solutions. That is, it is not always unique. This leads to a lack of clarity in the characterization of the solutions obtained by the EPM. We present a modified version of the EPM, which unlike its precursor ensures a unique solution. In order to illustrate the differences, we present some numerical examples and comparisons between the two concepts.

Keywords
Game Theory, Unique Solution, Solution Concept, EPM, Linear Programming, Lexicography
National Category
Transport Systems and Logistics
Identifiers
urn:nbn:se:liu:diva-121557 (URN)10.1016/j.amc.2017.03.018 (DOI)000399591500007 ()
Note

Funding agencies: Swedish Energy Agency

Available from: 2015-09-24 Created: 2015-09-24 Last updated: 2018-12-13
Persson, F. & Engevall, S. (2008). The Shift from Construction Site to Prefabrication in the Construction Industry: A Case Study. In: Advances in Production Management Systems,2008. Espoo, Finland: Espoo
Open this publication in new window or tab >>The Shift from Construction Site to Prefabrication in the Construction Industry: A Case Study
2008 (English)In: Advances in Production Management Systems,2008, Espoo, Finland: Espoo , 2008Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Espoo, Finland: Espoo, 2008
National Category
Mathematics
Identifiers
urn:nbn:se:liu:diva-44687 (URN)77304 (Local ID)77304 (Archive number)77304 (OAI)
Available from: 2009-10-10 Created: 2009-10-10
Engevall, S., Göthe-Lundgren, M. & Värbrand, P. (2004). The heterogeneous vehicle-routing game. Transportation Science, 38(1), 71-85
Open this publication in new window or tab >>The heterogeneous vehicle-routing game
2004 (English)In: Transportation Science, ISSN 0041-1655, E-ISSN 1526-5447, Vol. 38, no 1, p. 71-85Article in journal (Refereed) Published
Abstract [en]

In this paper, we study a cost-allocation problem that arises in a distribution-planning situation at the Logistics Department at Norsk Hydro Olje AB, Stockholm, Sweden. We consider the routes from one depot during one day. The total distribution cost for these routes is to be divided among the customers that are visited. This cost-allocation problem is formulated as a vehicle-routing game (VRG), allowing the use of vehicles with different capacities. Cost-allocation methods based on different concepts from cooperative game theory, such as the core and the nucleolus, are discussed. A procedure that can be used to investigate whether the core is empty or not is presented, as well as a procedure to compute the nucleolus. Computational results for the Norsk Hydro case are presented and discussed.

Keywords
vehicle routing, heterogeneous vehicles, cooperative game theory, cost allocation, generalized multiple tour problem
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-46276 (URN)10.1287/trsc.1030.0035 (DOI)
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13
Engevall, S., Göthe-Lundgren, M. & Värbrand, P. (1998). The traveling salesman game: An application of cost allocation in a gas and oil company. Annals of Operations Research, 82, 203-218
Open this publication in new window or tab >>The traveling salesman game: An application of cost allocation in a gas and oil company
1998 (English)In: Annals of Operations Research, ISSN 0254-5330, E-ISSN 1572-9338, Vol. 82, p. 203-218Article in journal (Refereed) Published
Abstract [en]

In this article, a cost allocation problem that arises in a distribution planning situation atthe Logistics Department at Norsk Hydro Olje AB is studied. A specific tour is considered,for which the total distribution cost is to be divided among the customers that are visited.This problem is formulated as a traveling salesman game, and cost allocation methods basedon different concepts from cooperative game theory, such as the nucleolus, the Shapleyvalue and the t-value, are discussed. Additionally, a new concept is introduced: the demandnucleolus. Computational results for the Norsk Hydro case are presented and discussed.

Place, publisher, year, edition, pages
Springer-Verlag New York, 1998
Keywords
Travel Salesman Problem, Vehicle Route Problem, Grand Coalition, Cost Allocation, Cooperative Game Theory
National Category
Mathematics
Identifiers
urn:nbn:se:liu:diva-156710 (URN)10.1023/A:1018935324969 (DOI)000075821500025 ()
Available from: 2019-05-10 Created: 2019-05-10 Last updated: 2019-05-13Bibliographically approved
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