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Transfer line balancing problem: A comprehensive review, classification, and research avenues
No full textInternational audienceThe Transfer Line Balancing Problem (TLBP) is characterized as the challenge of optimally distributing tasks across various workstations in an automated machining line to ensure its maximum efficiency. This problem holds pivotal importance for industries reliant on high-volume production, such as the automotive and aerospace sectors, where it directly influences the overall productivity and cost efficiency of the manufacturing process. TLBP has been studied for over two decades, and many problem variants and solution approaches have been devised to address real-world challenges. Despite the long history of the topic, no review study exists to shed light on its past, current, and future developments. This study conducted a systematic literature review on TLBP to identify and address the research gaps, focusing on classifying existing studies. A tuple notation classification framework has been introduced to organize TLBP research based on system configuration, problem characteristics, and optimization objectives. This framework offers a structured overview of the field, clarifying the current state of research and highlighting prospective research pathways. Consequently, this review study establishes itself as a foundational guide for academics and industry professionals interested in TLBP studies
Discrete cutting path problems: a general solution framework and industrial applications
No full textInternational audienceThe optimal tool routing for cutting machines, also known as cutting path optimisation is an important problem in production research. This problem is relevant in various manufacturing environments such as aeronautic, automotive, garment and semiconductor industries. In this paper, we introduce a general solution framework for the discrete Cutting Path Problem which includes: (i) the universal approach to reduce numerous settings of this problem to the appropriate auxiliary instances of the well-known Precedence Constrained Generalized Traveling Salesman Problem; (ii) the proposition of efficient solution methods for finding (sub-) optimal solutions. We carry out extensive computational experiments in order to evaluate performance of the proposed framework and the obtained results demonstrate its efficiency for real-life industrial instances
A dynamic optimization model for vaccine allocation with age considerations: A study inspired by the COVID-19 pandemic
No full textInternational audienceIn a pandemic situation, an effective vaccination campaign is seen as a powerful tool to prevent the spread of infectious diseases and reduce fatalities. However, its success highly depends on its organization and combination with other measures. To help the decision-makers in this endeavor, this paper proposes a Mixed-Integer Linear Programming - Vaccine Allocation (MILP-VA) model to plan the vaccination campaign to minimize the number of possible fatalities over a given period. To better integrate the pandemic dynamics, this model is coupled with a single-dose Susceptible-Vaccinated-Infected-Recovered (SVIR) model where the compartmentalization of the population allows for the adjustment of different demographic and epidemiological parameters based on age categories and their social interactions. This approach is proven to suit populations with heterogeneous age groups better. The applicability of the proposed SVIR-MILP-VA model is illustrated using a case study inspired by the COVID-19 pandemic. Accordingly, an extensive numerical analysis was conducted to test various managerial, epidemiological, and behavioral conditions, such as vaccine availability, transmission rates, and vaccine hesitancy. This approach facilitates robust discussions to address the uncertainties of an emerging pandemic and provides a solid foundation for informed vaccination decisions in real-world settings. The results are discussed, and the findings are formulated as insights for researchers and practitioners
Facteurs d’incitation ou de résistance à l’adoption d’un reporting de durabilité en PME
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Factors influencing the adoption of digital sales support tools in short food supply chains by agricultural producers
No full textInternational audiencePurpose This study aims to develop a framework for the adoption of digital sales support tools in short food supply chains within the agricultural sector, based on the Technology Acceptance Model-Technology-Organization-Environment framework. Design/methodology/approach The research used a mixed-methods approach. First, a qualitative phase, involving 15 semi-structured interviews, informed the development of a conceptual model. Second, a quantitative phase tested the model using structural equation modeling. Findings The validated model confirms the hypothesized relationships between the intention to adopt and various technological, organizational and environmental factors. These factors include perceived ease of use, perceived usefulness, financial resources, human factors and market pressure. Interestingly, greater financial resources were found to have a negative relationship with adoption intentions. Furthermore, mimetic behaviors emerged as a significant driver of adoption. Originality/value This research suggests that public authorities aiming to promote digitization within farmers’ value chains can leverage these findings to foster adoption
Organizational Justice Towards Beneficiaries and Readiness for Change in Local Governments: the Roles of Pride and Prosocial Motivations
No full textInternational audienceUnderstanding how to foster change in local governments is crucial. Drawing on intergroup emotion theory, the paper explores the effects of organizational justice towards beneficiaries on organizational pride and its subsequent influence on employees’ readiness for change. Additionally, the paper examines whether employees’ prosocial motivations moderate the relationship between organizational justice towards beneficiaries and pride. Two empirical studies were conducted with local government employees in UK and France. The results aim to contribute to the understanding of the dynamics underlying change readiness, shedding light on the interplay between organizational justice, pride, and prosocial motivations in the context of public administrations
Price discrimination between freight forwarders and carriers: Evidence from the container shipping industry
No full textInternational audienceFreight forwarders often serve as intermediaries in the container shipping industry, facilitating reservations and negotiating container freight rates between shippers and carriers. This study empirically investigates whether these freight forwarders experience price discrimination compared to shippers who engage in direct price negotiations with carriers. The analysis uses a unique dataset consisting of approximately 1.5 million real-world transactions from 2018 to 2023. The results show that, on average, freight forwarders incur a 5 % premium for short-term contracts but receive a 3 % discount for long-term contracts. Moreover, the premium was more pronounced during the COVID-19 pandemic, peaking at 18.1 % in 2021–2022. This finding is corroborated by a robust estimation that matches contracts negotiated by freight forwarders with comparable contracts negotiated directly by shippers
Quand les crises redéfinissent les leviers du bien-être au travail : dynamiques de transformations et ancrages contextuels
No full textInternational audienceIn the Tunisian context, characterized by enduring economic instability and persistent socialand political tensions, the traditional levers of workplace well-being (WWB) appear to havereached their limits. This study explores a relatively underexamined area of the literature byanalyzing how and why WWB factors are activated, transformed, or reconfigured during crises.Drawing on the conservation of resources theory (Hobfoll, 1989) and the job demandsresourcesmodel (Demerouti et al., 2001), we investigate how individual and organizationalresources are reconfigured in response to the constraints of an uncertain environment.The research adopts a qualitative design based on 31 interviews with Tunisian employeesfrom diverse sectors. The findings reveal a metamorphosis of WWB mechanisms, in whichindividual dimensions (e.g., resilience, meaning at work), organizational dimensions (e.g.,managerial support, recognition, interpersonal relations), and contextual dimensions (e.g.,socioeconomic conditions, institutional arrangements) are articulated differently under crisisconditions. Theoretically, the study calls for a critical reassessment of conventional WWBframeworks, which often overlook the dynamics of vulnerability, adaptation, and resilience inunstable contexts. From a managerial perspective, it identifies concrete levers to strengthenboth individual and collective resilience and to foster organizational stability in ambiguousenvironments.Dans un contexte tunisien marqué par une instabilité économique ainsi que des tensions sociales et politiques récurrentes, les leviers classiques du bien-être au travail (BET) montrent leurs limites. Cette recherche s’inscrit dans une zone encore peu explorée de la littérature et vise à comprendre les raisons et les logiques selon lesquelles les facteurs du BET s’activent, se transforment ou se reconfigurent en période de crises. En mobilisant un cadre conceptuel inspiré du modèle de la conservation des ressources (Hobfoll, 1989) et du modèle des exigences-ressources (Demerouti et al., 2001), nous analysons la manière dont les ressources individuelles et organisationnelles se recomposent face aux contraintes d’un environnement incertain. Notre méthodologie repose sur une étude qualitative conduite auprès de 31 travailleurs tunisiens, issus de différents secteurs d’activité. Les résultats révèlent une métamorphose des leviers du BET où les dimensions individuelles (résilience, sens au travail), organisationnelles (soutien managérial, reconnaissance, relations interpersonnelles) et contextuelles (conditions socioéconomiques, dispositifs institutionnels) s’articulent différemment sous l’effet des crises. Sur le plan théorique, l’étude invite à une relecture critique des modèles classiques du BET – souvent inadaptés aux dynamiques spécifiques de vulnérabilité, d’adaptation et de résilience – qui prévalent dans les contextes instables. Sur le plan managérial, elle identifie des leviers d’action concrets permettant de renforcer la résilience individuelle et collective et de soutenir la stabilité organisationnelle dans des environnements équivoques
Systematic Review and Future Directions in Dynamic Flexible Job Shop Scheduling: A Decade of Research
No full textInternational audienceThis paper presents a comprehensive overview of the current state-of-the-art on Dynamic Flexible Job Shop Scheduling problems (DFJSSP). It reviews a wide range of studies that address different scheduling strategies, various types of disruptive events, and multiple objectives. The numerous solution methods developed in the literature and tested on significant benchmarks are also analyzed. This paper compiles studies on DFJSSP from 2013 to the present, offering valuable guidance for future research in this area. It highlights the progress made and addresses new challenges in dynamic scheduling and its application in manufacturing systems