Impact Of E-Atmospheric Elements On The Perceived Value Of The Online Visit

Websites managers want the consumption experience to be central in the online visit. This study analyzes the effects of experiential components of a website on the online experience. Through experimentation, we handle three elements of the merchant environment (virtual agent, 3D environment and control command). A survey of 272 users shows that the tools manipulated generate perceived value. Furthermore, we test the effect of hedonic and utilitarian value of the visit on the online behavior, highlighting its significant effect. Finally, from a theoretical and a managerial point of view, we elaborate on the necessary conditions for improving the visitor experience and for creating customer values

Valeur perçue et comportements en ligne en état d'immersion: le rôle modérateur de l'implication et de l'expertise.

Les concepteurs et responsables de sites marchands cherchent de plus en plus à favoriser l’immersion des internautes lors de leurs expériences en ligne. Pour comprendre l’intérêt de ces démarches, une étude quantitative permet de mettre en évidence l’impact de l’expérience immersive en ligne sur la valeur perçue de la visite et sur les réponses des internautes envers le site, la marque et le produit. L’étude se penche également sur les effets modérateurs de l’expertise et de l’implication. Sur le plan théorique et managérial, cette recherche offre des perspectives de compréhension aux chercheurs et aux professionnels sur les bénéfices perçus des expériences immersives vécues en ligne.Internet; expérience; immersion; valeur perçue; expertise; implication;

L'immersion dans les environnements expérientiels en ligne : rôle des dispositifs de la réalité virtuelle

Cette étude qualitative permet de souligner les spécificités d'une expérience immersive dans le contexte du commerce électronique, comparativement aux expériences d'immersion dans le domaine culturel. La recherche permet d'identifier les composantes expérientielles des sites marchands qui utilisent des dispositifs de réalité virtuelle (notamment les agents virtuels et le décor en 3D). Pour finir, l'étude met également en évidence l'impact de l'immersion sur les réponses de l'internaute envers le site, la marque et le produit, qu'il s'agisse de réponses cognitives, transactionnelles ou relationnelles. Pour conclure, nous exposons un modèle conceptuel traduisant l'immersion dans les environnements expérientiels en ligne.Internet; commerce électronique; réalité virtuelle; expérience; immersion

L’immersion dans les environnements expérientiels en ligne : Rôle des dispositifs de la réalité virtuelle.

Cette étude qualitative permet de souligner les spécificités d’une expérience immersive dans le contexte du commerce électronique, comparativement aux expériences d’immersion dans le domaine culturel. La recherche permet d’identifier les composantes expérientielles des sites marchands qui utilisent des dispositifs de réalité virtuelle (notamment les agents virtuels et le décor en 3D). Pour finir, l’étude met également en évidence l’impact de l’immersion sur les réponses de l’internaute envers le site, la marque et le produit, qu’il s’agisse de réponses cognitives, transactionnelles ou relationnelles. Pour conclure, nous exposons un modèle conceptuel traduisant l’immersion dans les environnements expérientiels en ligne.This qualitative study is the first to validate immersion as a relevant concept to capture the essence of online commercial experiences. Our study also highlights the specificities of immersive experiences engendered by virtual reality applications available on commercial web sites. We identify the most important experiential components of e-commerce web sites using virtual reality devices (i.e. virtual agents and 3D décor). We finally shed some light on the influence of immersive experiences on the potential responses of the visitor towards the site, the brand and the product, in terms of cognitions, purchase intentions and relational behaviors. To conclude, we expose a conceptual model that subsumes the phenomenon of immersion in the context of online consumption experiencesvirtual reality; réalité virtuelle; expérience; immersion; Internet; commerce électronique;

Valeur perçue et comportements en ligne en état d'immersion : le rôle modérateur de l'implication et de l'expertise

Les concepteurs et responsables de sites marchands cherchent de plus en plus à favoriser l'immersion des internautes lors de leurs expériences en ligne. Pour comprendre l'intérêt de ces démarches, une étude quantitative permet de mettre en évidence l'impact de l'expérience immersive en ligne sur la valeur perçue de la visite et sur les réponses des internautes envers le site, la marque et le produit. L'étude se penche également sur les effets modérateurs de l'expertise et de l'implication. Sur le plan théorique et managérial, cette recherche offre des perspectives de compréhension aux chercheurs et aux professionnels sur les bénéfices perçus des expériences immersives vécues en ligne.Internet; expérience; immersion; valeur perçue; expertise; implication

Fine-Grained Analysis of Language Varieties and Demographics

[EN] The rise of social media empowers people to interact and communicate with anyone anywhere in the world. The possibility of being anonymous avoids censorship and enables freedom of expression. Nevertheless, this anonymity might lead to cybersecurity issues, such as opinion spam, sexual harassment, incitement to hatred or even terrorism propaganda. In such cases, there is a need to know more about the anonymous users and this could be useful in several domains beyond security and forensics such as marketing, for example. In this paper, we focus on a fine-grained analysis of language varieties while considering also the authors¿ demographics. We present a Low-Dimensionality Statistical Embedding method to represent text documents. We compared the performance of this method with the best performing teams in the Author Profiling task at PAN 2017. We obtained an average accuracy of 92.08% versus 91.84% for the best performing team at PAN 2017. We also analyse the relationship of the language variety identification with the authors¿ gender. Furthermore, we applied our proposed method to a more fine-grained annotated corpus of Arabic varieties covering 22 Arab countries and obtained an overall accuracy of 88.89%. We have also investigated the effect of the authors¿ age and gender on the identification of the different Arabic varieties, as well as the effect of the corpus size on the performance of our method.This publication was made possible by NPRP grant 9-175-1-033 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors.Rangel, F.; Rosso, P.; Zaghouani, W.; Charfi, A. (2020). Fine-Grained Analysis of Language Varieties and Demographics. Natural Language Engineering. 26(6):641-661. https://doi.org/10.1017/S1351324920000108S641661266Kestemont, M. , Tschuggnall, M. , Stamatatos, E. , Daelemans, W. , Specht, G. , Stein, B. and Potthast, M. 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In Association for Computational Linguistics (ACL), pp. 456–461.Salton, G., & Buckley, C. (1988). Term-weighting approaches in automatic text retrieval. Information Processing & Management, 24(5), 513-523. doi:10.1016/0306-4573(88)90021-0Zaghouani, W. and Charfi, A. (2018a). ArapTweet: A large MultiDialect Twitter corpus for gender, age and language variety identification. In Proceedings of the 11th International Conference on Language Resources and Evaluation (LREC), Miyazaki, Japan.Zampieri, M. , Tan, L. , Ljubešić, N. , Tiedemann, J. and Nakov, P. (2015). Overview of the DSL shared task 2015. In Proceedings of the Joint Workshop on Language Technology for Closely Related Languages, Varieties and Dialects, pp. 1–9.Huang, C.-R. and Lee, L.-H. (2008). Contrastive approach towards text source classification based on top-bag-of-word similarity. In PACLIC, pp. 404–410.Zaidan, O. F., & Callison-Burch, C. (2014). Arabic Dialect Identification. 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ARAP: Arabic Author Profiling Project for Cyber-Security. Sociedad Española para el Procesamiento del Lenguaje Natural (SEPLN).Agić, Ž. , Tiedemann, J. , Dobrovoljc, K. , Krek, S. , Merkler, D. , Može, S. , Nakov, P. , Osenova, P. and Vertan, C. (2014). Proceedings of the EMNLP 2014 Workshop on Language Technology for Closely Related Languages and Language Variants. Association for Computational Linguistics.Sadat, F., Kazemi, F., & Farzindar, A. (2014). Automatic Identification of Arabic Language Varieties and Dialects in Social Media. Proceedings of the Second Workshop on Natural Language Processing for Social Media (SocialNLP). doi:10.3115/v1/w14-5904Franco-Salvador, M., Rangel, F., Rosso, P., Taulé, M., & Antònia Martít, M. (2015). Language Variety Identification Using Distributed Representations of Words and Documents. Experimental IR Meets Multilinguality, Multimodality, and Interaction, 28-40. doi:10.1007/978-3-319-24027-5_3Rosso, P., Rangel, F., Farías, I. 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Multidrug-resistant Acinetobacter baumannii strains carrying the blaOxA-23 and the blaGES-11 genes in a neonatology center in Tunisia

Multidrug-resistant and difficult-to-treat Acinetobacter baumannii may be responsible for nosocomial infections. The production of carbapenem-hydrolyzing class D β-lactamases (CHDLs) and extended-spectrum β-lactamase (ESBLs) of the GES type possessing a carbapenemase activity has been increasingly reported worldwide in A. baumannii. The aim of this study was to analyze the resistance mechanisms of two carbapenem resistant A. baumannii clinical isolates recovered in a neonatology center in the center-east of Tunisia.Two carbapenem resistant A. baumannii isolates were recovered. The first isolate co-harbored the blaGES-11 ESBL gene and the blaOxA-23 CHDL gene. Analyses of the genetic location indicated that the blaGES-11 gene was plasmid located (Gr6). However, the blaOxA-23 gene was located on the chromosome. The second strain had only the blaOxA-23 CHDL gene, which was plasmid located.This study showed the first description of the GES-type β-lactamase in A. baumannii in Tunisia