Navegando por Assunto "Social media"

Agora exibindo 1 - 4 de 4

Acesso aberto (Open Access)
Uma arquitetura de pré-processamento para análise de sentimento em mídias sociais em português brasileiro
(Universidade Federal do Pará, 2018-08-23) CIRQUEIRA, Douglas da Rocha; SANTANA, Ádamo Lima de; http://lattes.cnpq.br/4073088744952858
The Web 2.0 and the evolution of Information Technologies have brought novel interaction and relationship channels. In this context, the Online Social Networks (OSN) are an example as platforms which allow interactions and sharing of information between people. In this scenario, it is possible to observe the adoption of OSN as a channel for posting opinions regarding products and experience. This scene presents an excellent opportunity for companies that aim to improve products, services and marketing strategies, given OSNs are powerful sources of massive unstructured data generated by consumers (UGC), with opinions and reviews concerning offers, in platforms such as Facebook, Twitter and Instagram. Brazil is a highlight in this scenario, where this phenomenon can be observed, as the Brazilian population is one of the most active in social media platforms in the world. This makes it a country full of opportunities to market exploitation. In this context, computational techniques of Opinion Mining and Sentiment Analysis (SA) are applied aiming to infer the polarity (positive, negative, neutral) regarding a sentiment associated to texts, and can also be applied in data from OSN to evaluate the feedback from a target audience. Although the existing diversity of SA strategies reported in the literature, there are still challenges faced in the application of SA in text data from OSN, given the characteristics of the language adopted in such platforms. The state of art is focused on SA towards the English language, and the existing proposals for Brazilian Portuguese do not have a standardized methodology for preprocessing steps. In this context, this research investigates an approach with no translation, and proposes a novel preprocessing architecture for SA towards Brazilian Portuguese, aiming to provide enriched features to SA algorithms. The proposal was compared with well-established baselines from the literature, and the obtained results indicate that this architecture can overcome the state of art recall in at least 3% , for 6 out of 7 datasets evaluated.
Acesso aberto (Open Access)
@midiasnoensino: uma proposta de uso do Instagram como ferramenta educacional para o ensino superior
(Universidade Federal do Pará, 2019-11-22) BRIGIDO, Jéssica de Almeida Vasconcelos; VELOSO, José Miguel Martins; http://lattes.cnpq.br/3550143585946842; https://orcid.org/0000-0002-8969-7320
Social Media platforms have astonishingly spread to the point they are part of the daily lives of most people, modifying the way they now communicate. However, such technologies have not yet effectively made themselves available as educational tools ready for use in different leveis of teaching. Based on this framework, this dissertation describes the steps taken to answer the following focus question: in which ways higher education teachers can use the social media Instagram as an educational tool? For that purpose, a series of experimentations were carried in other to achieve a main goal: the proposition of possibie uses of Instagram as educational tool to assist teachers in pedagogical practices and to promote learning processes in higher education environments. A quaiitative and expioratory approach was chosen in order to achieve such goais. This approach inciuded methodological procedures such as bibliographic research, participant observation (PERUZZO, 2017), validation of results before an experts' panei (PINHEIRO; FARIAS; ABE-LIMA, 2013), data collection, the anaiysis of feedback and the materiaiization of the intended product. Instagram was tested as educational tool during two courses of the undergraduate program in Technology of Multimedia Production at the Pará Federal University. By looking for different meanings for Instagram usage, activities were carried to experiment to which extent this social media use could follow aiong students' learning path, enable feedback practices, stimuiate creative abilities, and promote collaborative learning. The Instagram profiie @midiasnoensino is presented here as result of this dissertation process, displaying possibiiities in pedagogical practices using this social media, in the form of posts and adaptabie tempiates. Activities available in the profiie are interesting aiternatives for teachers accessing them, as they allow considerations on the uses and appropriations of Instagram apart from its most common uses in daiiy life. Such activities are asso open for adaptations and the creation of new meanings through the reorganization of possibiiities according to actual practices teachers experience in their work environments. That is, the proposed activities enable teachers to use creativity to deveiop actions that build knowiedge in a dialogic and collaborative manner.
Acesso aberto (Open Access)
A Moderação do prestígio percebido com o uso de novas redes sociais entre a preocupação com a privacidade e a adoção de novas tecnologias
(Universidade Federal do Pará, 2023-06-07) CARNEIRO, Marcelo Pamplona; ARRUDA FILHO, Emilio Jose Montero; http://lattes.cnpq.br/9895428179606886; https://orcid.org/0000-0002-1574-8332
This research analyzes the power of influence of prestige in association with the phenomenon of the privacy paradox, based on three studies developed according to scenarios that present characteristics of innovation based on access to materialism in the form of a stimulus to obtain prestige as a sign of status. To this end, the aspects that stimulate the effect of the privacy paradox and influence the perception of prestige, concern with privacy and access to new Social Media were identified, as well as the analysis of trust as a antecedent variable to adoption, constituting a mediation between the concern for privacy and the adoption of these Media. The examination of the data showed that trust acts as a mediator of the effect of concern for privacy in the adoption of new Social Media and prestige, when associated with brands of companies with consolidated reputations, motivates the reduction of concern for privacy in consumers, considering the unique opportunities offered by Social Media in the content of perceived prestige, increasing its adoption.
Acesso aberto (Open Access)
A Presença digital de conselhos de saúde: o uso de mídias sociais no processo de accountability de entidades de representação social
(Universidade Federal do Pará, 2024-07-03) PINHEIRO, Cristina Lais dos Santos; DIAS, Lidiane Nazaré da Silva; http://lattes.cnpq.br/4706661632242562
This research analyzed how the use of social media by state health councils can improve the accountability process and increase citizen participation. To this end, it analyzed almost 10,000 posts on the social networks Facebook, Instagram, and X (formerly Twitter) from 26 State Health Councils during the period from January 2019 to August 2023, covering the period before, during, and after the COVID-19 pandemic. The data showed a substantial difference in the use of platforms between the different regions of Brazil, with councils in the South and Southeast regions standing out for their greater digital activity compared to those in the North and Northeast regions, which demonstrated a more discreet online presence, with fewer posts and interactions with the general public. A relevant finding of the study was the preference for the use of Facebook followed by Instagram among the health councils analyzed; on the other hand, X was the least used platform, indicating an underutilized opportunity for effective communication with society. The most common areas of publication in the posts of the state health councils were about the dissemination of the council's agenda, dissemination of the activities carried out by the council, and encouragement of public participation. On the other hand, little was published about accountability for the resources received for the council's activities, complaints, and full disclosure of reports and documents prepared by the council. The study concluded that social networks and other digital technologies play a fundamental role in strengthening transparency and promoting social responsibility and oversight by civil society. When used strategically, social networks can contribute significantly to increasing citizen participation and improving the visibility of the activities of the State Health Councils. The research results support the perceived accountability presented by Aleksovka; Schillemans and Grimmelikhuijsen (2019), who explain how people internalize responsibility through a moral and ethical sense of acting in favor of society. The research indicates that State Health Councils in Brazil have a great opportunity to use social media as a tool to promote accountability and engagement with citizens and society at large. However, it is essential to invest in training council members in digital skills and online communication to make the most of these platforms. It is also important to develop more efficient and personalized communication strategies for each region and specific target audience. The research highlights how social media can be used to foster transparency and encourage civic engagement in public administration – topics of extreme importance for Applied Economics with regard to the efficient allocation of public resources and the pursuit of social equity. By examining how councils operate online and how people engage with them digitally, the study contributes and impacts by presenting insights for policy makers and administrators seeking to improve the use of resources and promote justice in the health area. The findings of this research can help in the creation of strategies and public policies that aim to strengthen local governments and promote more active community participation in social development, contributing to a more efficient, transparent and democratic health system.