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Publications

Publications by LIAAD

2022

Brown-Sequard syndrome in a patient with spondyloarthritis after COVID-19 vaccine: a challenging differential diagnosis

Authors
Costa, R; Soares, C; Vaz, C; Bernardes, M; Tavares, M; Abreu, P;

Publication
ARP RHEUMATOLOGY

Abstract

2022

The impact of heterogeneous distance functions on missing data imputation and classification performance

Authors
Santos, MS; Abreu, PH; Fernández, A; Luengo, J; Santos, JAM;

Publication
Eng. Appl. Artif. Intell.

Abstract

2022

Churn in services - A bibliometric review

Authors
Ribeiro, H; Barbosa, B; Moreira, AC; Rodrigues, R;

Publication
CUADERNOS DE GESTION

Abstract
The purpose of this article is to identify the most impactful research on customer churn and to map the conceptual and intellectual structure of its field of study. Data were collected from the WoS database, comprising 338 articles published between 1995 and 2020. Several bibliometric techniques were applied, including analysis of co-words, co-citation, bibliographic coupling, and co-authorship networks. R software and the Bibliometrix/Biblioshiny package were used to perform the analyses. The results identify the most active and influential authors, articles, and journals on the topic. More specifically, through co-citations and bibliographic coupling, it was possible to map the oldest articles (retrospective analysis) and the current research front (prospective analysis). The retrospective analysis, based on co-citations, revealed that the foundations of this research field are constructs such as quality of service, satisfaction, loyalty, and changing behaviors. The prospective analysis, performed through bibliographic coupling, revealed that current research is embedded in predictive analysis, clusters, data mining, and algorithms. The results provide robust guidance for further investigation in this field.

2022

Entrepreneurial behaviors that shape performance in small family and non-family hotels during times of crisis

Authors
Kusa, R; Suder, M; Barbosa, B; Glinka, B; Duda, J;

Publication
INTERNATIONAL ENTREPRENEURSHIP AND MANAGEMENT JOURNAL

Abstract
Recent economic and public health crises have posed important challenges to family businesses - particularly those in the hospitality sector. While sustaining a business, performance becomes critical; there is insufficient knowledge on the use of entrepreneurial behaviors in mitigating the impact of a crisis by family businesses. To help fill this gap, this study explores the configurations of entrepreneurial behaviors that lead to improved performance in small firms under crisis market conditions - particularly, risk-taking, innovativeness, proactiveness, flexibility, and digitalization. This study employs fuzzy-set qualitative comparative analysis (fsQCA). The sample consists of 117 one- and two-star Polish hotels that are comprised of both family and non-family businesses. The data was collected in November and December 2021. The results confirm the core role of risk-taking, proactiveness, and flexibility in increasing the performance of these small firms. However, performance outcomes depend on the configurations of the firms; differences between family and non-family businesses stood out. In family hotels, risk-taking is accompanied by flexibility as a core factor, and digitalization does not play an important role in achieving higher performance. Overall, these results contribute to the literature on organizational entrepreneurship (especially entrepreneurial orientation) as well as family business crisis management in the tourism sector. These findings offer implications for managers by indicating combinations of entrepreneurial behaviors that can help foster business performance.

2022

Handbook of Research on Smart Management for Digital Transformation

Authors
Barbosa, B; Filipe, S; Santos, CA;

Publication
Advances in E-Business Research

Abstract

2022

Communication During a Pandemic

Authors
Carvalho, CL; Barbosa, B;

Publication
Research Anthology on Managing Crisis and Risk Communications

Abstract
Although the literature on crisis communication is quite vast, business communication related to global crises (e.g., natural disasters) is largely unexplored. This chapter aims to fill this gap and shed light on brand communication strategies during a pandemic. A netnographic study was carried out with the purpose of identifying brand positioning and communication strategies during the COVID-19 pandemic outbreak and of understanding the engagement of brands' followers during that period. The study included four brands of large Brazilian companies and comprised the analysis of brands' feed on Instagram during the first five weeks of the outbreak in Brazil. Findings enable to identify two distinct profiles: unprepared brands and leading brands. The chapter provides valuable clues for both managers and researchers dealing with crisis communication.

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