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About

Alexandra F. Marques holds a PhD in Forest Engineering and Management of Natural Resources (UTL, 2012), a Master in Operations Research (OR) (UL, 2005) and currently works in research and consultancy in Operations Management. Develops new technologies as well as new OR methods for supporting planning and decision-making, particularly concerning natural resources. Current projects tackle operations scheduling and resources assignment, control/simulation and re-planning; supply chain optimization; decision support systems; collaborative planning and knowledge management. The research developed under an industrial framework, has been applied in many companies and public bodies in Portugal and abroad, including Europac Viana, Portucel Soporcel, Celbi Stora Enso, Instituto da Vinha e do Vinho, Instituto dos Vinhos do Douro e Porto, Direcção Geral das Florestas, Forestis, PT Comunicações, SONAECOM, CP, Alliance Health Care, Adira. Other working countries include Israel, Brazil, Chile and Canada. Currently works as a researcher in the Manufacturing Systems Engineering Unit of INESC PORTO,. Coordinates the project FOCUS: Advances in Forestry Control and Automation Systems in Europe, is responsible for research activities of the project Productech-PTI (New Processes and new innovative technologies for the industry of production technology), co-coordinates the Cost Action FORSYS-Forest Management Decision Support Systems. Participates in several other RTD projects, including MOTIVE-Models for Adaptive forest management, ORCHESTRA-Orchestrating forest-related policy analysis in Europe. Is the author of 25 research publications, including book chapters, articles in international journals and conference proceedings. Is also author or many technical as well as outreach publications.

Interest
Topics
Details

Details

005
Publications

2018

Planning woody biomass supply in hot systems under variable chips energy content

Authors
Marques, A; Rasinmaki, J; Soares, R; Amorim, P;

Publication
Biomass and Bioenergy

Abstract
The growing economic importance of the biomass-for-bioenergy in Europe motivates research on biomass supply chain design and planning. The temporally and geographically fragmented availability of woody biomass makes it particularly relevant to find cost-effective solutions for biomass production, storage and transportation up to the consumption facility. This paper addresses tactical decisions related with optimal allocation of wood chips from forest residues at forest sites to terminals and power plants. The emphasis is on a “hot-system” with synchronized chipping and chips transportation at the roadside. Thus, decisions related with the assignment of chippers to forest sites are also considered. We extend existing studies by considering the impact of the wood chips energy content variation in the logistics planning. This is a key issue in biomass-for-bioenergy supply chains. The higher the moisture content of wood chips, the lower its net caloric value and therefore, a larger amount of chips is needed to meet the contracted demand. We propose a Mixed Integer Programming (MIP) model to solve this problem to optimality. Results of applying the model in a biomass supply chain case in Finland are presented. Results suggest that a 20% improvement in the supplier profit can be obtained with the proposed approach when compared with a baseline situation that relies on empirical estimates for a fixed and known moisture content in the end of an obliged storage age. © 2017

2015

A COMPREHENSIVE FRAMEWORK FOR DEVELOPING INTER-FIRM COLLABORATION-A STUDY OF THE FOREST-BASED SUPPLY CHAIN

Authors
Marques, AF; Olmo, B; Audy, JF; Rocha, P;

Publication
J-FOR-JOURNAL OF SCIENCE & TECHNOLOGY FOR FOREST PRODUCTS AND PROCESSES

Abstract
Entities that participate in the same supply chain or that can complement each other can benefit from reductions in their operational costs and increased operating efficiency when collaborating by sharing information and resources or engaging in joint planning. However, setting up successful collaborations is still an active research topic, particularly in the forest sector, due to the lack of a clearly defined road map for bringing collaboration into practice. This paper builds on a comprehensive literature review to propose a framework for developing inter-firm collaboration, particularly for agents of forest-based supply chains. The framework encompasses identification of collaboration opportunities with potential entities, design of the collaborative strategy, and tools for its implementation. The framework is used to discuss cases of collaboration found in the literature. The framework is also applied to developing a new collaborative process in the wood furniture industry.

2014

Transportation and Routing

Authors
Audy, JF; Marques, AS; Rönnqvist, M; Epstein, R; Weintraub, A;

Publication
The Management of Industrial Forest Plantations - Managing Forest Ecosystems

Abstract

2014

Combining optimization and simulation tools for short-term planning of forest operations

Authors
Marques, AF; de Sousa, JP; Roennqvist, M; Jafe, R;

Publication
SCANDINAVIAN JOURNAL OF FOREST RESEARCH

Abstract
The use of optimization techniques is well established in forest short-term planning and decision-making. Yet, existing techniques may pose some limitations for tackling with stochastic factors impacting in the execution of forest operations, such as delays, equipment breakdowns and other unexpected events. This paper explores the potential of using optimization techniques in combination with discrete-event simulation (DES) models for planning harvesting and logistics operations acknowledging uncertainty. DES models may be useful for assessing the performance and identifying bottlenecks associated with the execution of the deterministic plans retrieved with optimization techniques, when such stochastic events occur. This paper further presents an approach for the combination of a heuristic and a DES model developed in SIMIO. This approach was used to solve the raw material reception problem (RMRP) at a Portuguese pulp mill. This paper concludes with the analysis of the performance of deterministic schedules for the wood trucks considering uncertainty in their arrival at the mill.

2014

Tactical and Operational Harvest Planning

Authors
Marques, AS; Audy, JF; D’Amours, S; Rönnqvist, M;

Publication
The Management of Industrial Forest Plantations - Managing Forest Ecosystems

Abstract

Supervised
thesis

2017

New Solution methods for the Vehicle Routing Problems with multiple synchronization constraints for practical applications

Author
Ricardo Soares

Institution
UP-FEUP

2017

Development of a Decision Support System for logistics planning: application to the biomass sector

Author
João Barrocas Oliveira

Institution
UP-FEUP

2016

Planeamento integrado da logística de inbound e outbound

Author
Rúben Gonçalo Pereira Brito

Institution
UP-FEUP