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Bráulio Alturas

Bio: Bráulio Alturas is an academic researcher from ISCTE – University Institute of Lisbon. The author has contributed to research in topics: The Internet & Computer-assisted web interviewing. The author has an hindex of 8, co-authored 108 publications receiving 265 citations.


Papers
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Journal ArticleDOI
TL;DR: Previous user’s experience with the online platform, individual preferences, and hotel prestige were the most relevant dimensions concerning guests’ satisfaction, while homogeneous characteristics among the Las Vegas hotels such as the hotel size were found of little relevance to satisfaction.
Abstract: This paper aims to propose a data mining approach to evaluate a conceptual model in tourism, encompassing a large data set characterized by dimensions grounded on existing literature.,The approach is tested using a guest satisfaction model encompassing nine dimensions. A large data set of 84 k online reviews and 31 features was collected from TripAdvisor. The review score granted was considered a proxy of guest satisfaction and was defined as the target feature to model. A sequence of data understanding and preparation tasks led to a tuned set of 60k reviews and 29 input features which were used for training the data mining model. Finally, the data-based sensitivity analysis was adopted to understand which dimensions most influence guest satisfaction.,Previous user’s experience with the online platform, individual preferences, and hotel prestige were the most relevant dimensions concerning guests’ satisfaction. On the opposite, homogeneous characteristics among the Las Vegas hotels such as the hotel size were found of little relevance to satisfaction.,This study intends to set a baseline for an easier adoption of data mining to evaluate conceptual models through a scalable approach, helping to bridge between theory and practice, especially relevant when dealing with Big Data sources such as the social media. Thus, the steps undertaken during the study are detailed to facilitate replication to other models.

30 citations

Proceedings ArticleDOI
13 Jun 2018
TL;DR: The paper presents the survey results about the preference level in relation to the targeted questions and proposes a conceptual framework for feedback on AR technology acceptance.
Abstract: Augmented Reality (AR) is an increasingly prevalent subject with various areas of application. This work explores the results of a survey especially developed to document the ease of acceptance of possible characteristics to implement in mobile outdoor applications enhanced with AR. This survey has been devised for a better assessment of user preferences regarding the use of AR in outdoor scenarios. Preference level has been evaluated based on indicators from models concerning various existing and important models. The paper presents the survey results about the preference level in relation the targeted questions and proposes a conceptual framework for feedback on AR technology acceptance.

17 citations

Journal ArticleDOI
TL;DR: In this paper, a questionnaire was administered to 204 participants that were aware of the Portuguese non-profit organization "Leigos para o Desenvolvimento" (People for Development) to assess the satisfaction of the participants with the Facebook page and how that satisfaction influences the dissemination of the organization through the word-of-mouth and the donations practices.
Abstract: Non-profit organizations have invested in the development of content for their Facebook pages, believing be an efficient and effective means to publicize its mission and raising resources, whether monetary or human. The purpose of this study is to assess the satisfaction of the participants with the Facebook page, and how that satisfaction influences the dissemination of the organization through the word-of-mouth and the donations practices. In this context, a questionnaire was administered to 204 participants that were aware of the Portuguese non-profit organization “Leigos para o Desenvolvimento” (People for Development). The results show that the participants are satisfied with Facebook page of the organization, and that there is influence of satisfaction on the word-of-mouth and on the frequency and amount of donations. However, satisfaction with the Facebook, itself, does not appear crucial to the realization of donations, either in the present or in future as intended. The study focuses only on one organization and includes a sample that may not represent all the population extracts and so inhibit the generalization of the findings to other populations. The paper includes implications for the development of an effective use of the Facebook as a digital marketing tool that can contribute to the sustainability of non-profit organizations. The study confirms the importance of the Facebook as a digital marketing tool that can contribute to the sustainability of non-profit organizations.

17 citations

Journal ArticleDOI
TL;DR: In this paper, the authors evaluated the impact of a recruitment application in Portugal, which was developed to meet the needs of candidates and employers, and its evaluation is made in terms of quality-in-use by both parties, small and medium-sized companies in Portugal and potential job offers applicants.
Abstract: E-Recruitment, a term that refers to online recruitment, has been increasingly adopted by companies that are prone to changes and ready to the constant evolution of society. Thus, this study aims to evaluate the impact of a recruitment application in Portugal. This application was developed to meet the needs of candidates and employers, and its evaluation is made in terms of quality-in-use by both parties, small and medium-sized companies in Portugal and potential job offers applicants. To achieve the results related to the defined objective, managers from six companies were interviewed, producing a qualitative evaluation of the application, accompanied by a survey to achieve its quantitative evaluation (3.36 in 4 points). Simultaneously, a quantitative study was carried out among the candidates for evaluation of the mobile application, 3.67 points out of 4 possible. Thus, it was verified that the application developed is suitable for candidates. However, despite the positive evaluation, recruiters point to improvements in the company module.

13 citations

Journal ArticleDOI
TL;DR: This is the first study of its kind using usability and efficiency as criteria of quality using 130 websites of Portuguese government agencies, which found many gaps, critical errors and non compliances.
Abstract: EnglishThe impact of the lack of quality of websites from government agencies may be huge In a market without competition and where citizens are often required to use Web channel to interact with public services, the government must ensure the quality and accessibility of its sites This article highlights the key findings of a quality study of 130 websites of Portuguese government agencies For this purpose, a new evaluation model was used, which was developed based on the literature and law We’ve evaluated 33 indicators, distributed by four criteria: content, accessibility, usability and efficiency This is the first study of its kind using usability and efficiency as criteria of quality We found many gaps, critical errors and non compliances Proposals are made to implement improvements and mechanisms to ensure compliance with these quality requirements portuguesO impacto da falta de qualidade dos sitios Web de organismos publicos pode ser oneroso Num mercado onde nao ha concorrencia e que muitas vezes obriga os cidadaos a usar este canal para interagir com servicos publicos, cabe ao Estado assegurar que os seus sitios Web tem qualidade e sao acessiveis Este artigo evidencia as principais conclusoes de um estudo de qualidade realizado a 130 sitios Web de organismos da Administracao Publica Portuguesa Para este efeito, foi usado um novo modelo de avaliacao desenvolvido com base na literatura de referencia e na legislacao em vigor Foram analisados 33 indicadores, distribuidos por quatro criterios: conteudos, acessibilidade, usabilidade e eficiencia Os criterios de usabilidade e eficiencia foram usados pela primeira vez num estudo deste genero Face a analise feita, foram detetadas lacunas, erros criticos e faltas de conformidade, pelo que sao apresentadas sugestoes de melhoria e mecanismos para assegurar o cumprimento dos requisitos de qualidade

13 citations


Cited by
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Book
01 Jan 1995
TL;DR: In this article, Nonaka and Takeuchi argue that Japanese firms are successful precisely because they are innovative, because they create new knowledge and use it to produce successful products and technologies, and they reveal how Japanese companies translate tacit to explicit knowledge.
Abstract: How has Japan become a major economic power, a world leader in the automotive and electronics industries? What is the secret of their success? The consensus has been that, though the Japanese are not particularly innovative, they are exceptionally skilful at imitation, at improving products that already exist. But now two leading Japanese business experts, Ikujiro Nonaka and Hiro Takeuchi, turn this conventional wisdom on its head: Japanese firms are successful, they contend, precisely because they are innovative, because they create new knowledge and use it to produce successful products and technologies. Examining case studies drawn from such firms as Honda, Canon, Matsushita, NEC, 3M, GE, and the U.S. Marines, this book reveals how Japanese companies translate tacit to explicit knowledge and use it to produce new processes, products, and services.

7,448 citations

01 Aug 2001
TL;DR: The study of distributed systems which bring to life the vision of ubiquitous computing systems, also known as ambient intelligence, is concentrated on in this work.
Abstract: With digital equipment becoming increasingly networked, either on wired or wireless networks, for personal and professional use alike, distributed software systems have become a crucial element in information and communications technologies. The study of these systems forms the core of the ARLES' work, which is specifically concerned with defining new system software architectures, based on the use of emerging networking technologies. In this context, we concentrate on the study of distributed systems which bring to life the vision of ubiquitous computing systems, also known as ambient intelligence.

2,774 citations

Book
29 Nov 2005

2,161 citations

Journal ArticleDOI
31 Mar 2000

727 citations