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Holmgren, Johan
Publikasjoner (10 av 29) Visa alla publikasjoner
Bakhtyar, S., Holmgren, J. & Persson, J. A. (2016). Technical Requirements of the e-Waybill Service. International Journal of Computer and Communication Engineering, 5(2), 130-140
Åpne denne publikasjonen i ny fane eller vindu >>Technical Requirements of the e-Waybill Service
2016 (engelsk)Inngår i: International Journal of Computer and Communication Engineering, ISSN 2010-3743, ISSN 2010-3743, Vol. 5, nr 2, s. 130-140Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

An electronic waybill (e-Waybill) is a service whose purpose is to replace the paper waybill, which is a paper documents that traditionally follows a consignment during transport. An important purpose of the e-Waybill is to achieve a paperless flow of information during freight transport. In this paper, we investigate five e-Waybill solutions, that is, system design specifications for the e-Waybill, regarding their non-functional (technical) requirements. In addition, we discuss how well existing technologies are able to fulfil the identified requirements. We have identified that information storage, synchronization and conflict management, access control, and communication are important categories of technical requirements of the e-Waybill service. We argue that the identified technical requirements can be used to support the process of designing and implementing the e-Waybill service.

sted, utgiver, år, opplag, sider
San Bernardino, CA: International Academy Publishing (IAP), 2016
Emneord
E-Waybill, e-Waybill service, system design, technical requirements.
HSV kategori
Identifikatorer
urn:nbn:se:bth-10874 (URN)10.17706/IJCCE.2016.5.2.130-140 (DOI)
Tilgjengelig fra: 2015-10-25 Laget: 2015-10-25 Sist oppdatert: 2018-01-10bibliografisk kontrollert
Bakhtyar, S. & Holmgren, J. (2015). A Data Mining Based Method for Route and Freight Estimation. In: Procedia Computer Science: . Paper presented at The 6th International Conference on Ambient Systems, Networks and Technologies (ANT-2015), London (pp. 396-403). Elsevier, 52
Åpne denne publikasjonen i ny fane eller vindu >>A Data Mining Based Method for Route and Freight Estimation
2015 (engelsk)Inngår i: Procedia Computer Science, Elsevier, 2015, Vol. 52, s. 396-403Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We present a method, which makes use of historical vehicle data and current vehicle observations in order to estimate 1) the route a vehicle has used and 2) the freight the vehicle carried along the estimated route. The method includes a learning phase and an estimation phase. In the learning phase, historical data about the movement of a vehicle and of the consignments allocated to the vehicle are used in order to build estimation models: one for route choice and one for freight allocation. In the estimation phase, the generated estimation models are used together with a sequence of observed positions for the vehicle as input in order to generate route and freight estimates. We have partly evaluated our method in an experimental study involving a medium-size Swedish transport operator. The results of the study indicate that supervised learning, in particular the algorithm Naive Bayes Multinomial Updatable, shows good route estimation performance even when significant amount of information about where the vehicle has traveled is missing. For the freight estimation, we used a method based on averaging the consignments on the historical known trips for the estimated route. We argue that the proposed method might contribute to building improved knowledge, e.g., in national road administrations, on the movement of trucks and freight.

sted, utgiver, år, opplag, sider
Elsevier, 2015
Serie
Procedia Computer Science, ISSN 1877-0509 ; Vol. 52
Emneord
Route estimation; freight estimation; supervised learning; Naive Bayes multinomial
HSV kategori
Identifikatorer
urn:nbn:se:bth-10877 (URN)10.1016/j.procs.2015.05.004 (DOI)000361567100048 ()
Konferanse
The 6th International Conference on Ambient Systems, Networks and Technologies (ANT-2015), London
Tilgjengelig fra: 2015-10-25 Laget: 2015-10-25 Sist oppdatert: 2018-01-10bibliografisk kontrollert
Sigakova, K., Mbiydzenyuy, G. & Holmgren, J. (2015). Impacts of traffic conditions on the performance of road freight transport. In: 2015 IEEE 18TH INTERNATIONAL CONFERENCE ON INTELLIGENT TRANSPORTATION SYSTEMS: . Paper presented at 18th IEEE International Conference on Intelligent Transportation Systems, SEP 15-18, 2015, SPAIN (pp. 2947-2952).
Åpne denne publikasjonen i ny fane eller vindu >>Impacts of traffic conditions on the performance of road freight transport
2015 (engelsk)Inngår i: 2015 IEEE 18TH INTERNATIONAL CONFERENCE ON INTELLIGENT TRANSPORTATION SYSTEMS, 2015, s. 2947-2952Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The efficiency of road transport is typically influenced by factors such as, weather, choice of road, and time of day, and day of the week. Knowledge about interactions between different traffic-and transport related factors and their influence on the execution of transport is important in transport planning. The purpose of this paper is to study the impact of different factors on the performance of road transport. We aim to contribute to improved transport planning by analysing traffic and transport data obtained from different sources in order to support data driven decision making. Through a review of existing literature and discussions with a Swedish road transport operator, we identified factors that could be relevant to consider when planning a transport, e.g., related to weather, location of roads where the transport will take place, and planned time of the transport. As a result of variation in size, type and volume of the data representing these factors, suitable machine learning algorithms were selected, such as Decision Stump, M5 model tree, M5 regression tree, RepTree, M5 rules, and linear regression in order to study the data. Our experimental results illustrate the complexity associated to the performance of road transport systems mainly because of the dependency between the choices of influencing factors and geographic location of the road segment.

Serie
IEEE International Conference on Intelligent Transportation Systems-ITSC, ISSN 2153-0009
Emneord
TRAVEL-TIME PREDICTION; FREEWAYS
HSV kategori
Identifikatorer
urn:nbn:se:bth-12770 (URN)10.1109/ITSC.2015.472 (DOI)000376668803006 ()978-1-4673-6596-3 (ISBN)
Konferanse
18th IEEE International Conference on Intelligent Transportation Systems, SEP 15-18, 2015, SPAIN
Tilgjengelig fra: 2016-06-30 Laget: 2016-06-30 Sist oppdatert: 2018-01-10bibliografisk kontrollert
Holmgren, J., Ramstedt, L. & Davidsson, P. (2014). A study on quantitative freight transport analysis models in Denmark and Sweden. Paper presented at NOFOMA - The Nordic Logistics Research Network. Paper presented at NOFOMA - The Nordic Logistics Research Network. Copenhagen: Nofoma
Åpne denne publikasjonen i ny fane eller vindu >>A study on quantitative freight transport analysis models in Denmark and Sweden
2014 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert) Published
Abstract [en]

Purpose The aim of this paper is to present a study on freight transport analysis models. The purpose is to identify different stakeholders’ perceptions of existing models, e.g., strengths and weaknesses, and of their requirements and views on future models. Design/methodology/approach The study is based on a questionnaire and interviews with representatives of public authorities, consultancy companies, and universities in Sweden and Denmark. Findings The study shows that there is a need for freight analysis models for supporting the transport planning in public authorities, including impact assessment of actions and estimation of freight flows. The respondents work mainly with macro-level models, whose main strength is their large geographic scopes, which allow comparative studies on, e.g., the national level using one model. Weaknesses include poor quality, missing functionality, and inadequate user-friendliness. In order to achieve improved freight transport analysis, the respondents wish to include more detailed logistics aspects in their analyses, which could possibly be achieved by combining macro-level and agent-based models. Research limitations/implications The limitation of this study is that we only included Danish and Swedish respondents, who mainly work with macro-level models. Moreover, only one Danish person answered the questionnaire. However, the respondent group represent a wide knowledge on freight and passenger transport models, and the study concerns to a large extent model types, not only particular models. Therefore, we argue that our findings have a wider geographic applicability. Practical implications The outcome of our study might be used by researchers and public authorities in order to, e.g., guide the decision-making on future model development: the views of the model users and clients are important to consider in order to assure that the development and research efforts lead to fulfilling their needs. Original/value The presented work provides insight into the needs and attitudes of model users and clients involved in freight transport analysis. This knowledge is important, e.g., for researchers involved in model development. According to the best of our knowledge, there is no previous study like the one presented.

sted, utgiver, år, opplag, sider
Copenhagen: Nofoma, 2014
Emneord
Freight transport analysis, Macro-level model, Agent-based model, Needs analysis, Model requirements
HSV kategori
Identifikatorer
urn:nbn:se:bth-6632 (URN)oai:bth.se:forskinfoE89181AE53D54CB7C1257D270038B154 (Lokal ID)oai:bth.se:forskinfoE89181AE53D54CB7C1257D270038B154 (Arkivnummer)oai:bth.se:forskinfoE89181AE53D54CB7C1257D270038B154 (OAI)
Konferanse
NOFOMA - The Nordic Logistics Research Network
Tilgjengelig fra: 2014-08-04 Laget: 2014-08-01 Sist oppdatert: 2018-01-11bibliografisk kontrollert
Holmgren, J., Ramstedt, L., Davidsson, P., Edwards, H. & Persson, J. A. (2014). Combining macro-level and agent-based modeling for improved freight transport analysis. In: Procedia Computer Science: . Paper presented at 5th International Conference on Ambient Systems, Networks and Technologies (ANT-2014), Hasselt, BELGIUM (pp. 380-387). Elsevier, 32
Åpne denne publikasjonen i ny fane eller vindu >>Combining macro-level and agent-based modeling for improved freight transport analysis
Vise andre…
2014 (engelsk)Inngår i: Procedia Computer Science, Elsevier , 2014, Vol. 32, s. 380-387Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Macro-level models is the dominating type of freight transport analysis models for supporting the decision-making in public authorities. Recently, also agent-based models have been used for this purpose. These two model types have complementing characteristics: macro-level models enable to study large geographic regions in low level of detail, whereas agent-based models enable to study entities in high level of detail, but typically in smaller regions. In this paper, we suggest and discuss three approaches for combining macro-level and agent-based modeling: exchanging data between models, conducting supplementary sub-studies, and integrating macro-level and agent-based modeling. We partly evaluate these approaches using two case studies and by elaborating on existing freight transport analysis approaches based on executing models in sequence.

sted, utgiver, år, opplag, sider
Elsevier, 2014
Serie
Procedia Computer Science, ISSN 1877-0509
Emneord
Multi-agent-based simulation, Macro-level modeling, Freight transport modeling, Combining models
HSV kategori
Identifikatorer
urn:nbn:se:bth-6552 (URN)10.1016/j.procs.2014.05.438 (DOI)000361562600046 ()
Konferanse
5th International Conference on Ambient Systems, Networks and Technologies (ANT-2014), Hasselt, BELGIUM
Tilgjengelig fra: 2014-11-20 Laget: 2014-08-01 Sist oppdatert: 2018-01-11bibliografisk kontrollert
Holmgren, J., Nikopoulou, Z., Ramstedt, L. & Woxenius, J. (2014). Modelling modal choice effects of regulation on low-sulphur marine fuels in Northern Europe. Transportation Research Part D: Transport and Environment, 28(S1), 62-73
Åpne denne publikasjonen i ny fane eller vindu >>Modelling modal choice effects of regulation on low-sulphur marine fuels in Northern Europe
2014 (engelsk)Inngår i: Transportation Research Part D: Transport and Environment, ISSN 1361-9209, E-ISSN 1879-2340, Vol. 28, nr S1, s. 62-73Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The implementation of MARPOL Annex VI in the North and Baltic Sea Sulphur Emission Control Area (SECA) has raised economic concerns among shippers and shipowners, as well as spurred policymakers to appeal to various interests, such as citizen health, export industry competitiveness, and consumer prices. To justify their cases, policymakers and stakeholders have commissioned various agencies to monitor the implementation’s effects upon sustainability, especially regarding a potential modal shift from sea to road transport. This article thus reviews some of these commissioned studies in order to analyse the effects of the implementation and the possibility of modal shift. It also provides an agent-based simulation study of route choice for comparatively high-value cargo from Lithuania in the east to the United Kingdom in the west. Ultimately, the results of our TAPAS study do not provide concrete evidence supporting a modal shift from sea to road transport and indeed, they indicate that a shift is unlikely to occur.

sted, utgiver, år, opplag, sider
Elsevier, 2014
Emneord
MARPOL Annex VI, Modal shift, Short sea shipping (SSS), Sulphur Emission Control Area (SECA), Simulation experiments
HSV kategori
Identifikatorer
urn:nbn:se:bth-6661 (URN)10.1016/j.trd.2013.12.009 (DOI)000335611400007 ()oai:bth.se:forskinfo425D19DA2398FBBEC1257C66006F2430 (Lokal ID)oai:bth.se:forskinfo425D19DA2398FBBEC1257C66006F2430 (Arkivnummer)oai:bth.se:forskinfo425D19DA2398FBBEC1257C66006F2430 (OAI)
Tilgjengelig fra: 2014-07-17 Laget: 2014-01-20 Sist oppdatert: 2018-01-11bibliografisk kontrollert
Holmgren, J. & Lindberg, P. O. (2014). Upright Stiff: subproblem updating in the FW method for traffic assignment. EURO Journal on Transportation and Logistics, 3(3), 205-225
Åpne denne publikasjonen i ny fane eller vindu >>Upright Stiff: subproblem updating in the FW method for traffic assignment
2014 (engelsk)Inngår i: EURO Journal on Transportation and Logistics, ISSN 2192-4384 , Vol. 3, nr 3, s. 205-225Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We present improvements of the Frank–Wolfe (FW) method for static vehicular traffic and telecom routing. The FW method has been the dominating method for these problem types, but due to its slow asymptotic convergence it has been considered dead by methods oriented researchers. However, the recent introduction of conjugate FW methods has shown that it is still viable, and in fact the winner on multi-core computers. In this paper, we show how to speed up the FW iterations, by updating the subproblems in the FW method, instead of solving them from scratch. The subproblem updating is achieved by viewing the subproblems as network flow problems with a threaded representation of the shortest path trees. In addition, we introduce a new technique, thread following, implying that a single traversal of the thread is enough to find a new shortest path tree. Our computational tests show that very few nodes in practice are visited more than once when searching for improving arcs. Moreover, we update also the all-or-nothing solutions of the subproblems, resulting in significantly reduced loading times. For a set of standard test problems, we observe speedups in the region of 25–50% for the subproblem updating FW method, compared to the traditional non-updating version. We typically achieve higher speedups for more difficult problems and converged solutions.

sted, utgiver, år, opplag, sider
Springer, 2014
Emneord
Traffic assignment, Frank–Wolfe method, Subproblem updating
HSV kategori
Identifikatorer
urn:nbn:se:bth-6544 (URN)10.1007/s13676-013-0031-3 (DOI)oai:bth.se:forskinfo4A6037B7F785DEB1C1257D95006A7313 (Lokal ID)oai:bth.se:forskinfo4A6037B7F785DEB1C1257D95006A7313 (Arkivnummer)oai:bth.se:forskinfo4A6037B7F785DEB1C1257D95006A7313 (OAI)
Tilgjengelig fra: 2014-11-20 Laget: 2014-11-19 Sist oppdatert: 2018-01-11bibliografisk kontrollert
Bakhtyar, S., Holmgren, J. & Persson, J. (2013). A synergy based method for designing ITS services. international Journal of Advanced Logistics, 2(2), 45-54
Åpne denne publikasjonen i ny fane eller vindu >>A synergy based method for designing ITS services
2013 (engelsk)Inngår i: international Journal of Advanced Logistics, ISSN 2287-7592, Vol. 2, nr 2, s. 45-54Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this paper, we propose a method for supporting the process of designing Intelligent Transportation System (ITS) services, which utilizes on primarily functional synergies with already existing services. Using synergies between services will enable sharing of resources, such as, information entities, functions and technical resources, which in turn may lead to reduced costs for implementing services. The method is built around an existing service description framework, which is used to describe both existing services and the service to be designed. In order to illustrate the usage of the suggested method, we have applied it for designing a new ITS service, i.e., the Liability Intelligent Transport System (LITS) service. The purpose of the LITS service is to support the process of identifying when, where and why freight has been damaged, and which actor was responsible when the freight was damaged. The LITS service may lead to better quality control of consignments and may also facilitate the identification of which actor was responsible for the freight damage, which is of particular interest in multi-modal transport. By applying our service design method we were able to identify that three out of four functions of the LITS service already exist in other existing ITS services. Therefore, the LITS service can be designed based on synergies with these services.

sted, utgiver, år, opplag, sider
Taylor & Francis, 2013
Emneord
freight damage, e-Waybill, ITS services, services synergy, service design method
HSV kategori
Identifikatorer
urn:nbn:se:bth-6522 (URN)10.1080/2287108X.2013.11006086 (DOI)oai:bth.se:forskinfoB854C49CC15108A9C1257C3500396810 (Lokal ID)oai:bth.se:forskinfoB854C49CC15108A9C1257C3500396810 (Arkivnummer)oai:bth.se:forskinfoB854C49CC15108A9C1257C3500396810 (OAI)
Tilgjengelig fra: 2014-11-28 Laget: 2013-12-02 Sist oppdatert: 2018-01-11bibliografisk kontrollert
Holmgren, J., Dahl, M., Davidsson, P. & Person, J. A. (2013). Agent-based simulation of freight transport between geographical zones. In: : . Paper presented at 4th International Conference on Ambient Systems, Networks and Technologies (ANT) / 3rd International Conference on Sustainable Energy Information Technology (SEIT), Halifax, Nova Scotia (pp. 829-834). Elsevier, 19
Åpne denne publikasjonen i ny fane eller vindu >>Agent-based simulation of freight transport between geographical zones
2013 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We present TAPAS-Z, which is an agent-based freight transport analysis model for simulation of decision-making and transport activities. TAPAS-Z is a further development of a simulation model called TAPAS, and it has improved support for simulation of transport in large geographical regions. It is based on the principles that shipments are simulated for chosen supplier-consumer relations in a geographic region, and that the geographic locations of suppliers and consumers are randomly varied for each shipment. In TAPAS-Z, one supplier represents all real-world suppliers in a geographic zone, and one consumer represents all real-world consumers in a zone. In that way, TAPAS-Z is able to capture some of the diversity in freight transport that is caused by the varying geographic locations of senders and receivers, and which is important when assessing the impact of transport policy and infrastructural measures.

sted, utgiver, år, opplag, sider
Elsevier, 2013
Serie
Procedia Computer Science, ISSN 1877-0509
Emneord
Multi-agent-based simulation, MABS, Freight transport modeling, Zone-based freight simulation
HSV kategori
Identifikatorer
urn:nbn:se:bth-6843 (URN)10.1016/j.procs.2013.06.110 (DOI)000361480500100 ()
Konferanse
4th International Conference on Ambient Systems, Networks and Technologies (ANT) / 3rd International Conference on Sustainable Energy Information Technology (SEIT), Halifax, Nova Scotia
Tilgjengelig fra: 2013-12-02 Laget: 2013-11-28 Sist oppdatert: 2018-01-11bibliografisk kontrollert
Davidsson, P., Gustafsson Friberger, M., Holmgren, J., Jacobsson, A. & Persson, J. A. (2013). Agreement Technologies for Supporting the Planning and Execution of Transports. In: Ossowski, Sascha (Ed.), Agreement Technologies, Law, Governance and Technology Series: (pp. 533-547). Dordrecht: Springer Netherlands
Åpne denne publikasjonen i ny fane eller vindu >>Agreement Technologies for Supporting the Planning and Execution of Transports
Vise andre…
2013 (engelsk)Inngår i: Agreement Technologies, Law, Governance and Technology Series / [ed] Ossowski, Sascha, Dordrecht: Springer Netherlands , 2013, s. 533-547Kapittel i bok, del av antologi (Fagfellevurdert)
Abstract [en]

The use of agreement technologies in the planning and execution of goods transports is analyzed. We have previously suggested an approach called Plug and Play Transport Chain Management (PnP TCM) that provides agent-based support for key tasks, such as, finding the best sequence of transport services for a particular goods transport, monitoring the execution of the transport, and managing the interaction between the involved actors. In this paper we analyze five agreement technologies in the context of PnP TCM, i.e., semantics, norms, organizations, argumentation and negotiation, and trust. We conclude that all five technologies play a critical role in the realization of PnP TCM.

sted, utgiver, år, opplag, sider
Dordrecht: Springer Netherlands, 2013
HSV kategori
Identifikatorer
urn:nbn:se:bth-6849 (URN)10.1007/978-94-007-5583-3 (DOI)oai:bth.se:forskinfo07353982F59C3CA4C1257B1700342ECF (Lokal ID)978-94-007-5583-3 (ISBN)oai:bth.se:forskinfo07353982F59C3CA4C1257B1700342ECF (Arkivnummer)oai:bth.se:forskinfo07353982F59C3CA4C1257B1700342ECF (OAI)
Tilgjengelig fra: 2013-11-29 Laget: 2013-02-19 Sist oppdatert: 2018-01-11bibliografisk kontrollert
Organisasjoner