André Thomas

André Thomas
University of Lorraine | UdL · École Nationale Supérieure des Technologies et Industries du Bois (ENSSTIB-UHP)

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202
Publications
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Publications

Publications (202)
Article
Full-text available
Various optimization tools have been used in industry to facilitate production planning at different levels of aggregation. Choosing the interoperability mechanisms of these systems, such as the planning frequencies, the information passed between them and the interpretation that other systems must make of them, has always been a challenge. This wo...
Article
Full-text available
It is now accepted that using multi-agent systems (MAS) improve the reactivity to treat perturbation(s) within flexible manufacturing system. Intelligent algorithms shall be used to address these perturbation(s) and all smart decision entities within their environment have to continuously negotiate until their common and final goal is achieved. Thi...
Article
Full-text available
The emergence of Cyber Physical System has dramatically impacted the use of traditionally centralized control system in responding to unexpected events. Rush order is a quite common unexpected event in the current dynamic market characteristics and has significant perturbing ability to a centrally predictive schedule. This paper is aimed to propose...
Article
Sawmilling activities in softwood mills (i.e., wood-sawing, drying, and finishing) cannot be efficiently planned at the operational level in a centralized manner because of the complexity of the production process. Sawmills plan their activities in a decentralized manner (although they try to coordinate them). Thus, specific mathematical models hav...
Article
This editorial introduces the special issue in the Elsevier journal Computers in Industry that analyses how the digital transformation of manufacturing is speeded up by two important drivers: cloud services and resource virtualization, which are vital for implementing the main building blocks - Cyber Physical Production Systems and Industrial Inter...
Article
Full-text available
In wireless sensor networks, the aim of storage protocols is to efficiently replicate data across nodes and to improve data collection and querying by sinks. Among them, in-network storage protocols replicate data in a set of nodes that depends on some characteristics such as network topology and geographic location. Researchers have proposed vario...
Article
Full-text available
Simulation is a powerful tool to analyse manufacturing systems for purposes of design and on-going operation. Nowadays, simulation modelling and analysis is confronted to increasing evolution of companies towards distributed process control. Thus, simulation modelling must be supported by an underlying modelling discipline, or structured approach t...
Chapter
Full-text available
The need of building process industrialization has seed up the use of new Information Technologies to enhance the productivity and quality of building projects. In particular, the use of the Building Information Modeling (BIM) assets and real time follow-up based on the Cyber Physical System paradigm could be a source of valuable data to support pl...
Book
This book gathers the peer-reviewed papers presented at the 8th edition of the International Workshop “Service Orientation in Holonic and Multi-Agent Manufacturing – SOHOMA’18” held at the University of Bergamo, Italy on June 11–12, 2018. The objective of the SOHOMA annual workshops is to foster innovation in smart and sustainable manufacturing and...
Conference Paper
Full-text available
It is now accepted that using the multi-agents system (MAS) augments the reactivity to treat disturbances within flexible manufacturing system. Each agent could have different capability (evolution, learning, etc.) and the whole physical and control system, based on the agent interaction, could lead emerging behaviors to dynamically adapt a product...
Article
Full-text available
In recent times, the manufacturing processes are faced with many external or internal (the increase of customized product rescheduling , process reliability,..) changes. Therefore, monitoring and quality management activities for these manufacturing processes are difficult. Thus, the managers need more proactive approaches to deal with this variabi...
Preprint
Full-text available
In recent times, the manufacturing processes are faced with many external or internal (the increase of customized product rescheduling , process reliability,..) changes. Therefore, monitoring and quality management activities for these manufacturing processes are difficult. Thus, the managers need more proactive approaches to deal with this variabi...
Book
Commercial aircrafts use black-box required for crash investigation purposes. While a black-box can be easily recovered in crash events on land, the same does not apply to crash events in great deep ocean water. This paper presents a new solution towards solving black-box data loss on ocean crash using a paradigm called communicating materials. The...
Article
The North American lumber industry produces mostly commodity products (i.e. products with standard dimensions and properties). However, some customers also want products showing very specific characteristics. Because sawing involves co-production (many different types of lumbers are obtained from a single tree), sawmills do not know how the introdu...
Article
It is now accepted that using the multi-agents system (MAS) augments the reactivity to treat disturbances within flexible manufacturing system. Each agent could have different capability (evolution, learning, etc.) and the whole physical and control system, based on the agent interaction, could lead emerging behaviors to dynamically adapt a product...
Book
Proceedings of the 7th edition of the International Workshop “Service Orientation in Holonic and Multi-agent Manufacturing – SOHOMA’17”, Nantes, France, October 19-20, 2017, Studies in Computational Intelligence, Vol. 762, Springer International Publishing 2018.
Conference Paper
Commercial aircrafts use black-box required for crash investigation purposes. While black-box can be easily recovered in crash events on land, the same does not apply to crash events in great deep ocean water. This paper presents a new solution towards solving black-box data loss on ocean crash using a paradigm called communicating materials. The s...
Article
Full-text available
The purpose of this study is to investigate an approach to group lots in batches and to schedule these batches on Acta-Mobilier cutting work-center while taking into account numerous constraints and objectives. The specific batching method was proposed to handle the Acta-Mobilier problem and a mathematical formalisation and genetic algorithm were p...
Conference Paper
Full-text available
A new area is coming with communicating materials able to provide diverse functionalities to users all along the product lifecycle, during the design, manufacturing, use and dismantling phases. These materials can track their own evolution all along the product lifetime, gather helpful information and thus allow information continuum at all time an...
Article
Full-text available
Commercial aircrafts use black box comprising a Flight Data Recorder (FDR) required for crash investigation purposes. While FDR can be easily recovered in crash events on land, the same does not apply to crash events in great deep ocean water. This paper presents a new solution towards solving FDR data recovery using a paradigm called “communicatin...
Article
A new area is coming with communicating materials able to provide diverse functionalities to users all along the product lifecycle, during the design, manufacturing, use and dismantling phases. These materials can track their own evolution all along the product lifetime, gather helpful information and thus allow information continuum at all time an...
Article
The impacts of using different order acceptance policies in manufacturing sectors are usually well known and documented in the literature. However, for industries facing divergent processes with co-production (i.e. several products produced at the same time from a common raw material), the evaluation, comparison and selection of policies are not tr...
Article
A new area is coming with communicating materials which is able to provide diverse functionalities to users all along the product lifecycle. These materials can track their own evolution all along the product lifetime, gather helpful information and thus allow information continuum at all time and everywhere. These functionalities are fulfilled via...
Chapter
Production planning and control and more generally taking a decision in the context of production systems often consider that input information are known, static and predictable. However, uncertainties on data and perturbations are recorded in the genetic of every production system. For instance, it is impossible to know exactly the level of the de...
Chapter
Full-text available
This paper presents an application of the measurements-based AHP to define a two-stage algorithm for product-driven systems control, in case of an unexpected event. This algorithm is made of two stages: the first one aims at defining which kind of strategy the product should adopt (wait¸ react by itself or switch back to centralized mode) while the...
Chapter
This volume gathers the peer reviewed papers which were presented at the sixth edition of the International Workshop on “Service Orientation in Holonic and Multi-agent Manufacturing – SOHOMA’16” which was held on October 6–7, 2016 at the New University of Lisbon, Portugal. The book reports recent research in actual domains of the digital transforma...
Book
The book offers an integrated vision on Cloud and HPC, Big Data, Analytics and virtualization in computing-oriented manufacturing, combining information and communication technologies, service-oriented control of holonic architectures as well as enterprise integration solutions based on SOA principles. It is structured in eight parts, each one grou...
Article
In the context of smart industries, learning machines currently have various uses such as self-reconfiguration or self-quality improvement, which can be classification forecasting problems. In this case, learning machines are tools that facilitate the modeling of the physical system. Thus, it is obvious that the model must evolve with changes in th...
Article
A communicating object, or connected object, is a key element of the Internet of Things to shift a perceptible real world into a wide digital virtual world known as the cyber-physical system. Knowing that sustainability, safety, and logistic issues are among the significant goals and challenges of modern industrial enterprises, the communicating ob...
Article
rea in the recent years. A structured national workgroup, called IMS², has emerged in France over the last decade. The aim of this paper is, regarding four highlighted general research topics (namely agility, new technologies, sustainability and industrial dissemination), to synthetize the general research works on intelligent manufacturing and to...
Conference Paper
Full-text available
A new area is coming with intelligent materials able to provide diverse functionalities to users all along the product lifecycle, during the design, manufacturing, use and dismantling phases. These materials can track their own evolution all along the product lifetime, gather helpful information and thus allow information continuum at all time and...
Conference Paper
Full-text available
Manufacturing companies that suffer from a high rework rate on their production have mostly problems with their production scheduling flow, too. Author's previous work have highlighted a panel of Key Performance Indicators (KPI) and their interactions. A simulation model has been made to obtain a cartography representing the evolution of the amount...
Article
This editorial introduces the special issue on Emerging Information and Communication Technology (ICT) concepts for smart, safe and sustainable industrial systems in the Elsevier journal Computers in Industry. The 13 papers in this special issue were selected because of their high quality and also because they propose emerging ICT solutions that ad...
Chapter
Intelligent products carrying their own information are more and more present nowadays. A lot of research works focuses on the usage of such products during the manufacturing or delivery phases. This led to important contributions concerning product data management in the framework of HMS (Holonic Manufacturing Systems). This paper aim is to: (1) m...
Chapter
Full-text available
In this article, a holonic manufacturing system to coordinate the activities in a copper concentrate smelting process is designed. The system was developed and compared with a simulation of the current system in use. Four scenarios with different feeding levels of copper concentrate were considered. The results show an increase in the amount of pro...
Article
The rapid development of Internet of Things has triggered the multiplication of communication nodes based on Radio-Frequency Identification (RFID) and Wireless Sensor Networks (WSNs) in various domains such as building, city, industry, and transport. These communication nodes are attached to a thing or directly included in the material of the thing...
Article
A new Internet of Things area is coming with communicating materials, which are able to provide diverse functionalities to users all along the product lifecycle. As example, it can track its own evolution which leads to gather helpful information. This new paradigm is fulfilled via the integration of specific electronic components into the product...
Article
The rapid development of Internet of Things has triggered the multiplication of communication nodes based on Radio-Frequency Identification (RFID) and Wireless Sensor Networks (WSNs) in various domains such as building, city, industry, and transport. These communication nodes are attached to a thing or directly included in the material of the thing...
Article
Full-text available
Le pilotage de la production est fortement dépendant des opérations relatives à la qualité des produits obtenus, car la non-qualité engendre des reprises qui vont fortement perturber les flux de production (boucles de retour, attentes, reprises, …). Si la mise en place d'une approche de management de la qualité telle que la TQM est indispensable da...
Book
This volume gathers the peer reviewed papers which were presented at the 5th edition of the International Workshop “Service Orientation in Holonic and Multi-agent Man-ufacturing – SOHOMA’15” organized in November 5-6, 2015 by the Institute for Manufacturing (IfM) of the University of Cambridge, UK in collaboration with the CIMR Research Centre in C...
Article
Full-text available
This special feature aims at shedding light on new emerging holonic and multi-agent systems operating in a service-and computing oriented manufacturing environment, using the latest ICT technologies such as service-orientation, mobile agents, Web-and Cloud services, virtualization, big data and analytics to name a few. Industrials are seeking for m...
Conference Paper
Hardwood flooring mills transform rough wood into several boards of smaller dimensions. For each piece of raw material, the system tries to select the cutting pattern that will generate the greatest value, taking into account the characteristics of the raw material. However, it is often necessary to choose less profitable cutting patterns in order...
Article
This paper presents a way to evaluate the quality of virtual wood products according to their tomographic image. The main objective is to anticipate a sawmill divergent process in order to enhance the production plan. From a virtual representation of the product, singularity features are extracted and their impact on the product virtual quality is...
Article
Full-text available
Nowadays, industrials are seeking for models and methods that are not only able to provide efficient overall production performance, but also for reactive systems facing a growing set of unpredicted events. One important research activity in that field focuses on holonic/multi-agent control systems that couple predictive/proactive and reactive mech...
Conference Paper
Full-text available
Raw material heterogeneity, complex transformation processes, and divergent product flows make sawmilling operations difficult to manage. Most north-American lumber sawmills apply a make-to-stock production strategy, some accepting/refusing orders according to available-to-promise (ATP) quantities, while a few uses more advanced approaches. This ar...
Article
Full-text available
One of the primary factors that impact the master production scheduling performance is demand fluctuation, which leads to frequently updated decisions, thereby causing instability. Consequently, global cost deteriorates, and productivity decreases. A reactive approach based on parametric mixed-integer programming (MIP) is proposed that aims to prov...
Article
Full-text available
Quality policy has an impact on the production flows control by the way of the reworks rate. The using of a quality management approach, as TQM, is useful but however often inadequate. The proposed approach must be seen as a supplement to such quality management. This approach is broken down into two steps. The goal of the first one is to reduce th...
Data
Full-text available
Cylindrical pieces of wood which can be placed in 10 mm o.d. NMR sample tubes have been impregnated by an aqueous solution of sodium nitrite (NaNO2). They were subsequently dried and examined by 14N quadrupole resonance. To our surprise, we were able to observe a signal at the right frequency (4.64 MHz, the highest frequency NaNO2 line). This impli...
Article
Full-text available
With traditional PLM (Product Lifecycle Management), people think towards the future: first comes product development, then manufacturing, then support and finally disposal -- data flows only in forward direction. With the CL2M (Closed-Loop Lifecycle Management) concept, there are also flows going backwards, enabling better visibility and control o...
Book
This volume gathers the peer reviewed papers presented at the 4th edition of the International Workshop “Service Orientation in Holonic and Multi-agent Manufacturing – SOHOMA’14” organized and hosted on November 5-6, 2014 by the University of Lorraine, France in collaboration with the CIMR Research Centre of the University Politehnica of Bucharest...
Article
Full-text available
Présentation au GDR 3544 Science du Bois Groupe « Bois et Imagerie »
Conference Paper
Full-text available
Les entreprises de fabrication présentant un fort taux de reprises sur leurs produits ont souvent des problèmes conséquents de gestion de leurs flux de produits. Malgré la multitude de méthodes disponibles pour tenter de diminuer le nombre de reprises, elles sont parfois confrontées à l'échec et se retrouvent obligées de mettre en place des solutio...
Article
Full-text available
RESUME : La simulation est souvent utilisée pour évaluer la pertinence d'un Plan Directeur de Production (PDP) ou pour en évaluer l'impact sur des scenarii d'ordonnancement détaillé de la fabrication. Cependant, construire de tels modèles de simulation reste une tâche difficile. L'objectif de ce papier est de réduire la complexité de cette tâche et...
Article
Full-text available
In this paper a fuzzy decision-making method is proposed to make local decisions in case of breakdown occurring in a context of product-driven systems. To cope with breakdown uncertainty, three parameters, α, β and γ are created to evaluate the impact of it. Further, a fuzzy rule based on a membership function is designed to switch between centrali...
Conference Paper
Full-text available
Evaluation of supply chain or workshop management is often based on simulation. This simulation task needs models which are difficult to design. The aim of this work is to reduce the complexity of simulation model design and to partially automate this task by combining discrete and continuous approaches in order to construct more efficient and redu...
Conference Paper
Full-text available
This article proposes a method for dynamically rebalance an assembly line when disturbances occur, by reassigning the tasks to the line's workstations. The method is based on reachability analysis of an automata network that represents the tasks and workstations to be performed. The execution trace leading to the desired state provides one feasible...
Conference Paper
Full-text available
Building Information Management systems have started to leverage new kinds of digital information infras- tructures that integrate activities related to design, budgeting, scheduling, analysis, material management, and human resources. Companies implementing such systems have no other option today than exchanging information among themselves in a p...
Article
Full-text available
Decision-making in Manufacturing Planning and Control Systems uses processes that consider several levels of product aggregation and different time horizons. Decisions rendered on each level do not always have similar goals. The problem is that building Intelligent Manufacturing Systems (IMS) involves coordinate decisions on different levels to ach...