Portail HAL Rennes SB
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692 research outputs found
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Sustainable group tourist trip planning: An adaptive large neighborhood search algorithm
No full textInternational audienceThe tourism industry is a key driver of economic growth and contributes to the achievement of sustainability goals. This paper presents a multi-objective group tourist planning problem that considers economic, environmental, and social dimensions simultaneously. The proposed model minimizes total cost and environmental impacts while maximizing the total collected prizes from tourists' interests. We introduce the lost profit opportunity for the cost of tours from an economic perspective for the first time. From an environmental perspective, the model minimizes both carbon emissions for transportation and the waste produced by tourists. Social satisfaction is addressed by considering tourists' preferences for visiting tourist sites and their interests in participating in group tours, maximizing total collected prizes. Uncertainties in travel time and prize values are addressed by using a fuzzy programming approach. A multi-objective adaptive large neighborhood search (ALNS) algorithm is developed to solve the proposed multi-objective group tourist planning problem, offering various removal, insertion, and local search heuristic procedures. Extensive analyses and computations are conducted to demonstrate the performance of the proposed multi-objective optimization model and the ALNS metaheuristic algorithm in solving large-scale instances. The results demonstrate the effectiveness of our approach in aiding tourism managers to make informed decisions that balance economic, environmental, and social objectives
A contingency-based approach to service robot design: Role of robot capabilities and personalities
No full textInternational audienceThe rise of service robots is changing how products and services are delivered, significantly affecting customer outcomes. However, research has yet to specifically examine how the design of a service robot to specific service contexts influences customer engagement and value co-creation. Our study adopts a contingency perspective to investigate how the design of robot capabilities and personalities aligned with specific service contexts impacts customer engagement and value co-creation intentions. We tested this proposition through three experiments carried out in the banking and restaurant service contexts. Our findings revealed the effectiveness of carefully designed robotic capabilities and personalities within a service infrastructure depends on the specific service contexts. The study findings have important implications for service firms in designing service robots through managing robot capabilities and personalities to align with specific service contexts
Facebook’s Influence on Effectiveness of Digital Advertising among Malaysian Youth
No full textInternational audienceThe growth of advanced technology has contributed to the digital advertising industry as Facebook's users are easily connected, and purchasing behaviours will be developed with the content of the products promoted in digital advertising. The older generation prefers traditional advertising due to technology's security and privacy aspects, leading to fewer choices in purchasing products. This study aimed to identify the relationship between the influence of Facebook and the effectiveness of digital advertising among Malaysian youth in Klang Valley. It was anticipated that this research would provide helpful information to the public and assist researchers in the future based on the findings of this topic area. Data was collected using a Google Form and distributed via social media like WhatsApp. The targeted respondents are between 15 and 34 years old and are located in the Klang Valley area. Statistical Package for the Social Sciences (SPSS) version 27 system was used to determine digital advertising characteristics electronically. T-test and ANOVA tests were applied in this study to examine the demographic factors that affect the relationship between the variables, as different backgrounds influence the perspectives and behaviours of the users. The findings show that the independent variable, the influence of Facebook, has a strong correlation with the dependent variable, the effectiveness of digital advertising among Malaysian youth in Klang Valley (r= 0.770). Socio-demographic factors such as age and educational level had an effect on the relationship between the variables. The effectiveness of digital advertising is influenced by the number of likes, comments, and shares by Facebook users
Cultivating initial trust in ghost kitchens: A mixed-methods investigation of antecedents and consequences
No full textInternational audienceThis study examines the antecedents and consequences of customer initial trust in ghost kitchens. A sequential mixed-methods approach, consisting of a quantitative survey followed by a qualitative inquiry, was employed to gain an in-depth understanding of the inter-relationships between constructs in the conceptual framework. Through the quantitative study, we found that food safety, economic value, personalization, food authenticity, and multisensory experience each positively influence customers’ initial trust in the ghost kitchen, which in turn, has a positive impact on advocacy and repurchase intentions. Risk attitude moderates the relationship between initial trust and repurchase intention, such that the higher the tendency to take risks, the stronger the relationship between initial trust and repurchase intention. Meta-inferences were then delineated based on the qualitative study to explore plausible reasons behind the results that contradicted the research hypotheses. The study findings offer novel insights into the customer trust-building process in ghost kitchens
Artificial Intelligence Research in Management: A Computational Literature Review
No full textInternational audienceArtificial intelligence (AI) spring of the past decade created an increased interest into the topic in business as well as in academia. This resulted in an upward trend in academic publications, not only in computer science but also in management. This article presents a computational literature review with an abstract-based sampling approach to investigate the status of the management literature to take stock of academic research of the past two decades. We analyze 6324 papers from 1990 to 2020 published in five management-related domains and identify 41 distinct topics. We present the evolution of research pre and post AI spring, emerging topics as well as saturated areas. The findings show that the previously disjointed topic network structure is fully connected by early 2010s and the upward trend in management research starts in the period of 2014–2015. The results provide a comprehensive insight into the potential of AI in management versus underdeveloped areas, and presents, for management scholars and practitioners, suggestions about effective adoption of AI practices
Green drives greenbacks: The impact of sustainable innovation on corporate cash holdings in BRICS nations
No full textInternational audienceThis study delves into the impact of sustainable innovation on corporate liquidity, specifically examining its influence on cash holdings among companies listed in BRICS nations. The study also explores the impact of green innovation on cash holdings before and after COVID-spread. Utilizing the system GMM regression technique on data spanning 2010 to 2022, we scrutinize the relationship between green innovation and cash reserves. Our findings reveal a significant correlation, showcasing that companies actively engaged in sustainable practices maintain lower levels of cash. This suggests a tangible reduction in the necessity for large cash reserves among businesses prioritizing green innovation. Notably, this effect persists even in the post-COVID landscape, highlighting the resilience of sustainability efforts on financial strategies. The influence of green innovation on cash holdings remains robust with diverse firm-specific and macroeconomic variables. The implications underscore the dual benefits of sustainable innovation, contributing not only to environmental sustainability but also enhancing financial efficiency by minimizing excess cash holdings. This study accentuates the imperative of integrating sustainability considerations into financial decision-making, offering practical insights for firms seeking to align sustainability goals with effective financial management. It provides valuable insights for policymakers and investors interested in promoting and supporting green initiatives. This study contributes to the evolving discourse on sustainability and corporate finance by shedding light on a relatively unexplored aspect of the association between green innovation and financial strategies
Piling and Discounting Perishable Products: Optimal Replenishment and Discounting Policy for Perishable Products
No full textInternational audienceRetail stores often display large quantities of perishable products that they sell at full price over a given period and then at a discount until the end of the inventory cycle. We investigate this common practice by considering a product which is subject to continuous decay through time. The demand is a function of both the price of the product and the inventory level. The retailer may discount the product once during the cycle. Closed-form expressions were provided for the maximum discounting time and cycle time. The conditions under which an optimal discount policy exists were established. The results provide insights to decision-makers on how to design a markdown policy for perishable products
Perceived Benefits of Plant-Based Diets
No full textInternational audienceUne transition globale vers des alimentations végétales pourrait considérablement atténuer l’impact négatif du système alimentaire actuel sur l’environnement, la santé et le bien-être animal. Alors que les campagnes d’informations sont devenues un outil privilégié des décideurs politiques et des spécialistes des sciences sociales pour inciter les consommateurs à adopter une alimentation plus durable, de nombreuses zones d’ombre demeurent quant aux connaissances de la population sur les avantages de l’adoption d’alimentations végétales. Dans ce travail, nous étudions les connaissances d’un échantillon représentatif de la population française ( N = 715) quant aux mérites relatifs des alimentations végétales vis-à-vis de l’environnement, la santé et le bien-être animal. Nous montrons que les Français ont en moyenne une bonne connaissance de l’impact environnemental relativement moindre des alimentations végétales (gaz à effet de serre, utilisation des sols) mais sous-estiment considérablement leurs bénéfices sur la santé. Nous constatons également que les Français sous-estiment considérablement la prévalence de l’élevage intensif et, par conséquent, les avantages d’adopter une alimentation végétale pour les animaux. Nos résultats montrent que la société est principalement divisée en deux groupes : les individus qui ont une opinion positive des alimentations végétales dans tous les domaines, et ceux qui y voient moins d’avantages tous les domaines. Nous discutons des implications de ces résultats pour les campagnes d’information visant à modifier les alimentations. JEL codes : Q10, Q1
Admission, discharge, and transfer control in patient flow logistics: Overview and future research
No full textInternational audienc
Inégalités de revenu et de patrimoine : modèles, données et perspectives croisées
No full textInternational audienceBien que liées par l’étude d’un objet commun, les approches empiriques permettant de mesurer les inégalités de revenu et de patrimoine et les approches macroéconomiques semblent s’être développées de manière relativement disjointe. Dans cet article, nous revenons sur les origines et développements de ces deux littératures. Nous montrons comment leurs évolutions récentes ouvrent la possibilité d’un dialogue fructueux, et l’illustrons par les travaux d’Auray et al. [2022], qui étudient les facteurs explicatifs des inégalités de revenu et de patrimoine en France depuis 1984. A l’aide d’un modèle à agents hétérogènes et d’analyses contrefactuelles, ces travaux mettent en lumière le rôle clé de l’augmentation du pouvoir de marché des entreprises, des réformes du système socio-fiscal et des variations différenciées du prix des actifs sur la dynamique des inégalités