FlowOpt – A Decision Support Tool for Strategic and Tactical Transportation Planning in Forestry

Forsberg, Mattias; Frisk, Mikael; Rönnqvisty, M.

doi:10.1080/14942119.2005.10702519

Cited by 69 publications

(54 citation statements)

References 2 publications

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“…Through backhauling, instead of trucks make the return trip empties, and therefore with low efficiency, are found new charge points in the opposite direction increasing the load on its total trip (Palander & Väätäinen, 2005;Carlsson & Rönnqvist, 2007). However, backhauling possibilities are usually limited in forest (Forsberg et al, 2005). ers, not linked to any industry (Rönnqvist, 2003;Carlsson & Rönnqvist, 2005).…”

Section: Forest-based Supply Chainmentioning

confidence: 99%

“…Transportation cost represents a significant parcel in the supply chain total cost (Rönnqvist et al, 1998;Forsberg et al, 2005;Carlsson & Rönnqvist, 2007). Since the 90's, this issue has becoming more relevant in forest sector companies, namely the control and scheduling quality of transportation systems (Hachemi et al, 2008;Hachemi et al, 2011;Hachemi et al, 2013).…”

Section: Forest-based Supply Chainmentioning

confidence: 99%

“…Still, the first part of the transport is done by trucks since the trains and ships collection points are fixed (Forsberg et al, 2005).…”

Section: Use Casementioning

confidence: 99%

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Overview of MPC applications in supply chains: Potential use and benefits in the management of forest-based supply chains

et al. 2015

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Aim of study: This work aims to provide an overview of Model Predictive Controllers (MPC) applications in supply chains, to describe the forest-based supply chain and to analyse the potential use and benefits of MPC in a case study concerning a biomass supply chain.Area of study: The proposed methods are being applied to a company located in Finland.Material and methods: Supply chains are complex systems where actions and partners’ coordination influence the whole system performance. The increase of competitiveness and need of quick responses to the costumers implies the use of efficient management techniques. The control theory, particularly MPC, has been successfully used as a supply chain management tool. MPC is able to deal with dynamic interactions between the partners and to globally optimize the supply chain performance in the presence of disturbances. However, as far as is authors’ knowledge, there are no applications of this methodology in the forest-based supply chains. This work proposes a control architecture to improve the performance of the forest supply chain. The controller is based on prediction models which are able to simulate the system and deal with disturbances.Main results: The preliminary results enable to evaluate the impacts of disturbances in the supply chain. Thus, it is possible to react beforehand, controlling the schedules and tasks’ allocation, or alert the planning level in order to generate a new plan.Research highlights: Overview of MPC applications in supply chains; forest-based supply chain description; case study presentation: wood biomass supply chain for energy production; MPC architecture proposal to decrease the operation times.Keywords: biomass; forest; Model Predictive Control; planning; supply chain.

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Section: Forest-based Supply Chainmentioning

confidence: 99%

Section: Forest-based Supply Chainmentioning

confidence: 99%

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Overview of MPC applications in supply chains: Potential use and benefits in the management of forest-based supply chains

et al. 2015

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“…There are 247 (2 8 -1-8) coalitions possible. Transportation costs for all coalitions were computed with the system FlowOpt (Forsberg et al 2005). This is a decision support system that includes a geographical information system, the Swedish road database NVDB, and optimization routines to solve the OR models.…”

Section: Case Studymentioning

confidence: 99%

An Educational Game in Collaborative Logistics

D’Amours

Rönnqvist

2013

INFORMS Transactions on Education

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W e describe an educational game in collaborative logistics. The game is based on an award-winning application in cost allocation in transportation. The purpose of the game is to acquire an understanding of negotiation, coalition building, and cost/profit sharing when the players have different powers and hold different levels of information. The game is played with each player representing a single company. The challenge for the players is to find an efficient coalition and to share the benefits and costs of the collaboration. We describe the underlying case study, review basic concepts in game theory, outline the teaching case, and discuss experiences from running the game in several countries and with students in business, engineering, and forestry.

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“…Cea and Jofre (2000) considered the strategic investment and tactical planning decisions to assist forestry companies. Forsberg et al (2005) developed a decision support system for strategic and tactical transportation planning in Swedish forestry.…”

Section: Introductionmentioning

confidence: 99%

Modeling an Integrated Market for Sawlogs, Pulpwood and Forest Bioenergy

2011

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Traditionally, most applications in the initial stage of forest supply chain deal with sawlogs to sawmills, pulpwood to pulp or paper mills and forest residues to heating plants. However, in the past decades, soaring prices of fossil fuel, global awareness about CO 2 emission and increasing attention to domestic resource security have boosted the development of alternative renewable energy, among which forest bioenergy is the most promising and feasible choice for medium-and large-scale heating and electricity generation. Different subsidies and incentive policies for green energy further promote the utilization of forest bioenergy. As a result, there is a trend that pulpwood may be forwarded to heating plants as complementary forest bioenergy. Though pulpwood is more expensive than forest residues, it is more efficient to transport and has higher energy content. The competition between traditional forest industries and wood-energy facilities, expected to grow in the future, is very sensitive for the forest companies as they are involved in all activities. In this paper, we develop a model that all raw materials in the forest, i.e. sawlogs, pulpwood and forest residues, and byproducts from sawmills, i.e. wood chips and bark, exist in an integrated market where pulpwood can be sent to heating plants as bioenergy. It represents a multi-period multi-commodity network planning problem with multiple sources of supply, i.e. pre-selected harvest areas, and multiple kinds of destination, i.e. sawmills, pulp mills and heating plants. The decisions incorporate purchasing the raw materials in harvest areas, reassigning byproducts from sawmills, transporting those assortments to different points for chipping, storing, wood-processing or wood-fired, and replenishing fossil fuel when necessary. Moreover, different from the classic wood procurement problem, we take the unit purchasing costs of raw materials as variables, on which the corresponding supplies of different assortments linearly depend. With this price mechanism, the popularity of harvest areas can be distinguished. The objective of the problem is to minimize the total cost for the integrated market including the purchasing cost of raw materials. Therefore, the model is a quadratic programming (QP) problem with a quadratic objective function and linear constraints. A large case study in southern Sweden under different scenario assumptions is implemented to simulate the integrated market and to study how price restriction, market regulation, demand fluctuation, policy implementation and exogenous change in price for fossil fuel will influence the entire wood flows. Pair-wise comparisons show that in the integrated market, competition for raw materials between forest bioenergy facilities and traditional forest industries pushes up the purchasing costs of pulpwood. The results also demonstrate that resources can be effectively utilized with the price mechanism in supply market. The overall energy value of forest bioenergy delivered to heating plants is 23% more...

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FlowOpt – A Decision Support Tool for Strategic and Tactical Transportation Planning in Forestry

Cited by 69 publications

References 2 publications

Overview of MPC applications in supply chains: Potential use and benefits in the management of forest-based supply chains

Overview of MPC applications in supply chains: Potential use and benefits in the management of forest-based supply chains

An Educational Game in Collaborative Logistics

Modeling an Integrated Market for Sawlogs, Pulpwood and Forest Bioenergy

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