Collection HAL Kedge Business School
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Price dispersion in wines
No full textInternational audienceWe investigate price dispersion in restaurant sales of wine. We measure empirically the change in price dispersion as competition varies, finding that price dispersion increases with competition. We then propose a spatial model capturing the unique features of restaurant dining to explain this empirical regularity. The model reveals an indirect effect flowing through the price of food, which is announced and known by customers, to the price of wine, which is only revealed once the customer enters the restaurant and receives the wine list. The results add to the literature on “add-ons” and price dispersion in bundled good markets
Regards croisés. « La qualité empêchée est-elle devenue une source de désengagement ? »
No full textInternational audienceLes réorganisations managériales, souvent guidées par des impératifs financiers ou des logiques économiques et structurelles, tendent à imposer des normes et des objectifs chiffrés qui bousculent les routines de travail. Comme l’indique Marie-Anne Dujarier, ces décisions, prises par un top management éloigné du terrain, créent un pilotage déconnecté des réalités du travail réel. Aussi, ce phénomène est (souvent) perçu par les employés comme un empêchement de produire un travail de qualité conforme à leurs attentes et celles des usagers ; générant ainsi une perte de sens de plus en plus documentée. Or, le sens au travail est un moteur d’engagement essentiel. Coralie Perez et Thomas Coutrot montrent que son absence est un facteurdéterminant des départs volontaires et du désengagement professionnel. Les travailleurs recherchent non seulement une utilité sociale, mais aussi une cohérence avec leurs valeurs et un épanouissement personnel.Lorsqu’ils ne peuvent plus accomplir un travail « bien fait », le mal-être s’installe, pouvant aller jusqu’au burn-out. Si la perte de sens conduit au désengagement, elle a aussi un impact économique tangible. Longtemps étudiée par les sociologues du travail, cette question intéresse désormais les économistes, signe de sesrépercussions sur la performance des entreprises. Moins de qualité, moins d’implication, et au final, une baisse de productivité et de rentabilité. Une contradiction majeure pour un management orienté efficacité
The power of the past: assessing the impact of brand heritage for suppliers
No full textInternational audiencePurpose Brand heritage has gained traction in the B2C literature. However, its effects on the relationship with buyers in a B2B context, as well as the mechanisms for and conditions under which such effects are observed, remain underexplored. This study aims to examine and provide empirical evidence for perceived quality and identification – two critical determinants of close B2B relationships – as mechanisms that explain the effects of suppliers’ brand heritage on buyer loyalty. Further, this research identifies past time orientation and supplier size as boundary variables for the positive effects of suppliers’ brand heritage. Design/methodology/approach Three empirical studies were conducted to test the conceptual model. In Study 1, 211 professional buyers participated in a cross-sectional study by completing an online questionnaire. The data were analyzed through Partial least squares structural equation modeling. In Studies 2 and 3, 235 and 465 individuals, respectively, with professional experience in negotiation participated in experimental studies, providing support for causality across the hypotheses. Moderated mediation and floodlight analysis were performed. Findings This research provides consistent evidence for the hypotheses. First, the findings show that suppliers’ heritage positively affects buyer-supplier identification and quality perceptions in B2B markets, these variables mediating the effect of supplier brand heritage on trust. Second, the authors found support for past-time orientation and supplier size as boundary conditions. Specifically, past-oriented buyers tend to be more loyal toward suppliers boasting a heritage, and such heritage prompts stronger buyer-supplier identification for larger (versus smaller) suppliers. Research limitations/implications Caution is needed when generalizing the results observed in this research to broader populations. Because the data were collected only in France and the USA and not in a broader set of countries, generalizability to other cultural settings may be limited. In addition, other effects of supplier heritage on buyer perceptions or behavior could be explored in the B2B branding context. For instance, future studies could explore the relationship between B2B brand heritage and legitimacy, a variable of strong interest for company performance. Practical implications Supplier – especially those of larger firms – managers should select the facets and episodes from their company’s heritage most likely to elicit identification. In this regard, companies can extol their brands in different ways to enhance buyers’ perception of heritage and, subsequently, identification. Building on the notion that distinctiveness, warmth and memorable experiences are strong drivers of identification, B2B brands would gain in communicating about themselves as having a unique and distinctive heritage through the success or personality of current or past leaders (e.g. CEOs, founders) or the successes of brand products or services over time. Originality/value To the best of the authors’ knowledge, this research is the first to explore the influence of supplier brand heritage on buyer-supplier relationship and loyalty in the B2B context. Beyond mere quality, this research finds buyer-supplier identification as a mechanism explaining why suppliers’ brand heritage boosts buyers’ loyalty. This research also determines the conditions (i.e. past-time orientation and supplier size) in which the effects of brand heritage are seen in supplier-buyer relationships
Family business ethics: A literature review and research agenda
No full textInternational audienceEthical issues in family businesses become increasingly relevant for businesses, societies and, consequently, organization scholars which manifests in a growing number of publications in the field over the years. Considerable knowledge generated in the area needs to be systematically structured and synthesized. This study reviewed 162 articles published over the last three decades (1989–2023) to map the intellectual and conceptual structure, and future research opportunities in the family business ethics field. Co-citation analysis highlighted four main groups of scholars influencing the field. The bibliographic coupling distinguished five thematic clusters: succession, religion and goodwill, entrepreneurship and innovation, ethical dilemmas, and values and ethical behavior. Sentiment analysis revealed that scholars explored more positive than negative terms associated with family business ethics. Finally, co-occurrence network analysis suggested the emerging keywords and potential research questions, organized into five research themes, for further development of the family business ethics field.Les questions éthiques dans les entreprises familiales deviennent de plus en plus pertinentes pour les entreprises, les sociétés et, par conséquent, pour les chercheurs en sciences de l’organisation, comme en témoigne le nombre croissant de publications dans ce domaine au fil des années. Les connaissances considérables générées dans ce champ nécessitent d’être structurées et synthétisées de manière systématique. Cette étude a examiné 162 articles publiés au cours des trois dernières décennies (1989–2023) afin de cartographier la structure intellectuelle et conceptuelle du champ de l’éthique des entreprises familiales, ainsi que d’identifier les opportunités de recherche futures. L’analyse de co-citation a mis en évidence quatre principaux groupes de chercheurs influençant le domaine. Le couplage bibliographique a distingué cinq clusters thématiques : la succession, la religion et la réputation (goodwill), l’entrepreneuriat et l’innovation, les dilemmes éthiques, ainsi que les valeurs et le comportement éthique. L’analyse de sentiment a révélé que les chercheurs ont davantage exploré des termes positifs que négatifs associés à l’éthique des entreprises familiales. Enfin, l’analyse des réseaux de co-occurrence a suggéré des mots-clés émergents et des questions de recherche potentielles, organisés en cinq axes de recherche, pour le développement futur du champ de l’éthique des entreprises familiales
Understanding Social Comparison Dynamics on Social Media: A Qualitative Examination of Individual and Platform Characteristics
No full textInternational audienceAs social media platforms continue to expand and attract more users, there is growing interest among scholars and policymakers to understand their impact on individuals. Drawing on self‐presentation and social comparison theories, this study explores the complex dynamics of social comparison within the context of social media, aiming to identify key individual and platform characteristics that influence this phenomenon. The methodology uses two waves of qualitative studies with diverse respondent profiles to understand the complexities of social comparison across various demographic groups. Study 1 consists of 39 individual semi‐structured interviews and a thematic analysis while study 2 is made of eight case studies. The findings highlight the complex interplay of factors such as gender, age, self‐esteem, media literacy, and the type of content consumed in shaping user experiences of social comparison. Additionally, an integrative framework of the antecedents and consequences of social comparison is proposed. By providing a nuanced comprehension of these mechanisms, this research contributes to theoretical advancements and managerial implications of navigating the complexities of online social dynamics
Designing profit-maximizing omnichannel distribution networks for high responsiveness
No full textInternational audienceThe network posture of omnichannel retailers, encompassing dedicated urban fulfillment centers (UFCs) and/or selected stores (omnistores) for order fulfillment, directly influences their ability to provide responsive delivery services. In turn, customers’ willingness to purchase online is shaped by the responsiveness level offered, impacting overall sales revenue. To address this business context, we introduce a responsive omnichannel distribution network design problem under a probabilistic, offer-dependent customer channel choice framework. At the strategic level, our approach optimizes the selection of delivery service offers by demand zone while jointly determining the number and location of UFCs and omnistores. We formulate a two-stage stochastic distribution network design model that maximizes expected profit. Demand scenarios are derived from a discrete choice model that captures customer preferences between online and offline channels, contingent on the retailer’s responsiveness level. To account for last-mile delivery complexities, we employ a refined pixelization of urban delivery areas and develop a precise calculation of Order-to-Delivery Time (ODT). Managerial insights from a case study of an omnichannel retailer in France highlight the advantages of deploying UFCs and omnistores, yielding up to an 8% profit increase under high responsiveness. Our results demonstrate the effectiveness of the proposed model in capturing customer willingness to buy online, with network offerings shifting to next-day delivery in up to 60% of demand zones.<br /
Zooplankton in Kone Lagoon (New Caledonia): Natural variability versus mining effects
No full textInternational audienceThe objective of this study is to assess the potential impact of nickel mining activity on zooplankton communities in a coral reef channel lagoon (Voh Koné, New Caledonia). During a multidisciplinary campaign in February 2018, we analyzed the variation in zooplankton abundance, biomass and taxonomic diversity, as a function of the distance from the metallurgical plant site and of hydrodynamic conditions and environmental variables. We also compared these results with those obtained in an earlier study conducted in 2009 prior the mining. The results show the high variability of planktonic variables between stations and periods, mainly related to natural factors (hydrodynamics, climatic events). However, lagoon zooplankton also appears to be affected by mining development, and in particular by the increase in sediment inputs and consequent turbidity. Zooplankton taxonomic richness and diversity were negatively correlated with non-algal particle concentrations (C NAP considered as an indicator of turbidity) with 10 more sensitive taxa completely absent at the highest concentrations. We interpret these negative relationships as the result of the degradation of food quality by mixing with inedible and less assimilable non-algal particles. The effect of metal toxicity cannot be excluded, even though the metal concentrations recorded in the lagoon are far from known toxic concentrations, but this hypothesis should be further developed. Overall, our results highlight the good resilience of lagoon zooplankton probably partly related to the high renewal rate of the lagoon water
Robust multi-manned mixed-model assembly line balancing with dynamic task assignment considering product mix uncertainty
No full textInternational audienceThe manufacturing industry is facing rapid changes in customer preferences, short product life cycles, and demand fluctuations. As a result, manufacturers tend to adopt mixed-model assembly lines that produce multiple types of products, and they need these lines to be as flexible as possible to handle market changes and different product model sequences. Dynamic task assignments and walking workers enhance the flexibility of a mixed-model assembly line because the assignment of tasks and workers to stations can change in each takt depending on the product unit entering the line. In this study, we consider the design of a mixed-model assembly line with walking workers and dynamic task assignments. The objective is to minimize the sum of worker and equipment costs. We study the robust optimization problem where the line must meet the takt time for any mix of products entering the line. We formulate the problem as a scenario-based Mixed Integer Linear Programming (MILP). However, the number of scenarios grows exponentially with the length of the product sequence, and the MILP does not scale well. To circumvent this issue, we employ an adversarial approach that iteratively looks for a worse input product mix. The sub-problem that finds the worst sequence of products is NP-hard. Therefore, we rely on a local search approach to generate sequences. Computational experiments show that the proposed dynamic assignment reduces costs by 4.6% to 14% compared to the fixed and model-dependent assignments. The approach efficiently reassigns 20% to 30% of tasks, improving equipment use, especially in industries with an ample cycle time. The proposed robust approach outperforms the scenario-based MILP in terms of computational time and solution quality, especially for large-size instances
Investment efficiency under financial constraints: The role of CEO power
No full textInternational audienceFinancial limitations can influence how effectively corporations invest, with influential CEOs playing a key role in making investment choices. This study investigates the link between CEO power and investment effectiveness in the context of financial limitations, using a dataset of Chinese firms listed from 2005 to 2022. We observe a negative association between CEO power and investment efficiency. Nonetheless, powerful CEOs facing financial pressures can notably enhance investment efficiency through adept strategic choices. Our findings remain robust across a range of alternative measures of investment efficiency and financial constraints, as well as various econometric specifications. Further examination shows that the investment inefficiencies associated with powerful CEOs mainly arise from overinvestment, while external governance factors, such as analyst coverage and media attention, as well as CEO gender, significantly impact the relationship between CEO power and investment efficiency. This research contributes to the existing body of knowledge on CEO power by integrating agency theory and strategic choice frameworks to clarify the relationship between CEO power and investment efficiency in financially constrained situations