Percorrer por autor "Coelho, Ana Sofia"
A mostrar 1 - 10 de 38
Resultados por página
Opções de ordenação
- AI-driven solutions for enhancing digital accessibility in higher educationPublication . Costa, José Paulo; Nacheva, Radka; Coelho, Ana Sofia; Martins, Oliva M.D.Digital accessibility is essential for ensuring that students with disabilities have equal access to educational materials in higher education. Despite the existence of standards like the Web Content Accessibility Guidelines (WCAG) and PDF Universal Access (PDF/UA), many institutions still face challenges in providing accessible digital content. Existing tools can identify accessibility issues but often fall short in automating the remediation process or offering personalized adjustments for individual learners. This paper presents an AI-driven framework designed to automate the detection, remediation, and personalization of digital content to meet accessibility requirements. The proposed framework integrates AI and machine learning to enhance the accessibility of PDFs, HTML content, and multimedia resources, ensuring compliance with WCAG 2.1 and PDF/UA standards. The study demonstrates that the AI system detects accessibility issues with 92% accuracy and successfully remediates 85% of identified issues. Additionally, the framework offers real-time personalized adjustments, improving user satisfaction for 94% of students with disabilities. The AI system also reduces the time and cost of ensuring accessibility, making it an efficient tool for educational institutions. The paper concludes with recommendations for further research to expand the framework’s capabilities and offers insights for developing inclusive education policies that leverage AI technology.
- Automating digital accessibility AI and machine learning for inclusive learning environmentsPublication . Costa, José Paulo; Coelho, Ana Sofia; Martins, Oliva M.D.Digital accessibility is essential for ensuring that students with disabilities have equal access to educational materials in higher education. Despite standards like the Web Content Accessibility Guidelines (WCAG) and PDF Universal Access (PDF/UA), many institutions still face challenges in providing accessible digital content. Existing tools can identify accessibility issues but often fail to automate the remediation process or offer personalised adjustments for individual learners. This paper presents an AI-driven framework designed to automate digital content detection, remediation, and personalisation to meet accessibility requirements. The proposed framework integrates AI and machine learning to enhance the accessibility of PDFs, HTML content, and multimedia resources, ensuring compliance with WCAG 2.1 and PDF/UA standards. The study demonstrates that the AI system detects accessibility issues with 92% accuracy and remediates 85% of identified problems. Additionally, the framework offers real-time personalised adjustments, improving user satisfaction for 94% of students with disabilities. The AI system also reduces the time and cost of ensuring accessibility, making it an efficient tool for educational institutions. The paper concludes with recommendations for further research to expand the framework’s capabilities and offers insights for developing inclusive education policies that leverage AI technology.
- Causa versus efeito. Do que se trata?Publication . Martins, Oliva M.D.; Marques, Henrique; Marques, Ana Teresa; Coelho, Ana SofiaA relação dos indicadores com o respectivo construto pode ser considerada de causa ou efeito. Considerando que o construto possa ser definido como formativo ou reflexivo, dependendo da análise teórica que antecede a análise estatística dos dados, torna-se fulcral compreender este processo. A importância desta conceitualização teórica é justificada pelas implicações na definição e análise do modelo estrutural. Neste sentido, definiu-se dois objetivos para este artigo: i) através de uma revisão da literatura, apresentar como se desenvolve um processo de validação teórica dos construtos no âmbito da modelagem de equações estruturais; e ii) desenvolver uma aplicação prática do processo a um modelo estrutural do comportamento do aleitamento materno no âmbito do marketing social. Foram ainda considerados os seguintes pressupostos: i) a intenção precede o comportamento voluntário; ii) a intenção é cognitiva; iii) a intenção é influenciada por vários fatores, o que permite ser avaliada por diferentes modelos, em função do contexto, o que quer dizer que a definição teórica deve ser o mais assertiva possível. Por fim, ressaltar a dificuldade de encontrar um único modelo para ser aplicado a todos os comportamentos.
- Co-creation and active learning within higher education studentsPublication . Coelho, Ana Sofia; Lisboa, Ana; Bittencourt, Bernadete de Lourdes; Pires, RaquelThe contemporary Higher Education System is full of challenges. The traditional teaching system was based on expositive lessons where the teacher was the center of attention, but this is no longer effective. Nowadays, students have become the center of attention, with a teaching system based on flexible structures and an active learning environment. Active learning activities such as co-creation are part of contemporary education and are key to better preparing students for the job market. This research examines co-creation and active learning experiences within higher education students. Particularly, the research analyzes the implementation of active learning activities in the development of an advertising campaign. It used groups of students from the Communication and Journalism Bachelor at a Portuguese University and supporting tools, such as Mentimeter, Jamboard, Google Slides, and Storyboard. Gamification, generation of Artificial Intelligence-based advertisements, outdoors, mupis, posters, online publications (websites and social media) and PowerPoint presentations are some examples of the outcomes of the implemented activities. Active learning activities proved to motivate and engage students individually and as part of the team. Additionally, the research evidenced the achievement of results such as critical thinking, research, written and oral presentation and problem-solving skills development.
- Comparative analysis of machine learning models for customer segmentation in E-commerce: a data-driven approachPublication . Costa, José Paulo; Coelho, Ana Sofia; Martins, Oliva M.D.E-commerce growth has led to vast amounts of customer data, making effective customer segmentation crucial for personalized marketing and customer relationship management. This paper presents a comparative study of unsupervised clustering algorithms for segmenting e-commerce customers based on RFM (Recency, Frequency, Monetary) attributes and additional behavioural factors such as customer satisfaction and tenure. We evaluate multiple clustering techniques – including K-Means, hierarchical clustering, and DBSCAN – to identify which algorithm yields the most coherent and well-separated customer groups. Cluster validity is assessed using internal metrics, notably the silhouette coefficient and the Davies-Bouldin index, to determine the optimal number of clusters and the quality of results for each method. Experimental results on real e-commerce data show that the choice of clustering algorithm significantly impacts segment formation. K-Means clustering achieved the highest silhouette score and lowest Davies-Bouldin index, indicating the best overall performance in capturing distinct customer segments. A detailed profile analysis of the resulting clusters reveals interpretable segments (e.g., high-value loyal customers, at-risk customers, new customers) with apparent differences in purchasing behaviour, satisfaction levels, and customer tenure. These findings provide insights into the strengths of different clustering approaches for customer segmentation and offer practical guidance for e-commerce firms to enhance customer targeting and retention strategies.
- Desporto, Território e Financiamento: Quais os critérios?Publication . Teixeira, Nuno; Nogueira, Sónia P.; Coelho, Ana SofiaO desporto assume um papel determinante para a sociedade atual quer a nível do desenvolvimento social, económico e cultural, mas também para a promoção da saúde e bem-estar do indivíduo. As políticas públicas locais são fundamentais para o desenvolvimento desportivo, pois é a Administração Pública, em particular as autarquias locais, que apresentam uma maior proximidade com os seus cidadãos têm uma maior perceção dos problemas e das suas necessidades.
- Digital tools in active learning activities: motivating and engaging higher education studentsPublication . Coelho, Ana Sofia; Pires, Raquel; Martins, Oliva M.D.Today's higher education system faces enormous challenges. Students in general have very particular characteristics that make the teaching-learning process very difficult, such as being very dependent on technology, lacking motivation for expositive teaching, and lacking attention for various reasons and for certain periods. Additionally, the teacher needs to develop the student's skills for the future profession, and at the same time teacher needs to adapt the content of the course to professional practice. In this context, the following question arises: how can teachers engage and attract students' interest and motivation for learning in the classroom in higher education at the same time that articulates both content and skills to the profession? To engage and motivate the students´ participation in the learning process, several active learning strategies using digital technology were introduced in the Organizational Communication course, with the students of Multimedia Bachelor at Bragança Polytechnic University. The students used free online tools such as Mentimeter, Jamboard and Google Slides. They also used computers and mobile phones. The active learning activities were accomplished individually and collaboratively during short and long periods of time. It also used interactive video. The result of this pedagogical activity was very interesting. Students were very motivated and committed by the learning process in the different moments of the class. All students participated individually and collaboratively in groups of three or four students. The time for activities were controlled by a timer. At first, the students didn't feel very comfortable with the time required to complete the activity, but at the end of the activity, they realized they were able to complete the activity within the classroom period and that it reflects learning in a professional environment. Some important workplace skills were developed, such as critical thinking and problem-solving, teamwork, oral and written communication, listening, and observing.
- Enhancing classroom dynamics: exploring the synergy of social marketing, neuromarketing, and artificial intelligencePublication . Martins, Oliva M.D.; Coelho, Ana Sofia; Costa, Paulo; Coelho, Ana Sofia; Costa, pauloAs a part of a research project, this paper refers to the assessment of the degree of knowledge integrating Social Marketing, Neuromarketing and Artificial Intelligence for sustainable economic development activities in Portugal. In addition, aiming to promote good behaviors and understand better the influence of Artificial Intelligence such as AI, VR, AR, big data, etc., on communications, social marketing can also explore neurometrics, biometrics and psychometrics factors to help individuals on their decision-making process. Furthermore, segmentation is a marketing technique that can be used to influence the decision-making process, even promoting good behavior. Considering the assumption that good behavior is very important because it results in benefits not only the individual but also society and the environment, to promote these behaviors, social marketing must communicate through assertive messages. Using neuromarketing theoretical framework to support social marketing communications and understand better the decision-making process, this literature review presents a model which can help teachers as well as social marketeers to promote sports activities in higher education institutions.
- Ensino superior e aprendizagens colaborativas: O uso de ferramentas digitais para resolver desafiosPublication . Pires, Raquel; Coelho, Ana SofiaAtualmente o Sistema de Ensino Superior apresenta-se repleto de enormes desafios. Os alunos demonstram cada vez mais uma maior dependência face ao mundo das tecnologias, comunicando, quase exclusivamente, de forma digital. Tais características fazem igualmente parte de um quadro pós-covid, que vieram desafiar o processo de ensino-aprendizagem no ensino superior, dificultando, numerosas vezes, a interação professores-alunos.
- Ensino superior e estratégias colaborativas: o uso de ferramentas digitais para resolver desafiosPublication . Pires, Raquel; Coelho, Ana SofiaAtualmente o Sistema de Ensino Superior apresenta-se repleto de enormes desafios. Os alunos demonstram cada vez mais uma maior dependência face ao mundo das tecnologias, comunicando, quase exclusivamente, de forma digital. Tais características fazem igualmente parte de um quadro pós-covid, que vieram desafiar o processo de ensino-aprendizagem no ensino superior, dificultando, numerosas vezes, a interação professores-alunos. Com efeito, verificamos alguns padrões de comportamento: dificuldades em comunicar com os pares; falta de motivação para a aprendizagem em contexto de sala de aula; participação reduzida em sala de aula aquando da exposição de conteúdos programáticos mais teóricos. Adicionalmente, o professor, para além de desenvolver estratégias de ensino-aprendizagem que move o aluno para a participação em sala de aula, tem também um papel fundamental em desenvolver competências do aluno para uma profissão futura, adequando o conteúdo do curso à prática profissional. Neste contexto, de forma a motivar os alunos para uma aprendizagem mais ativa e prepará-los para o desenvolvimento de tarefas mais complexas que a futura profissão assim o exige, foram desenvolvidas várias atividades de aprendizagem ativa, utilizando três ferramentas digitais, como o Mentimeter, o Jamboard e o Google Slides. As atividades foram aplicadas ao 2.º ano do Curso de Licenciatura em Multimédia, no âmbito da Unidade Curricular de Comunicação Organizacional. O resultado desta atividade pedagógica foi muito interessante: a participação dos alunos foi realizada num primeiro momento de forma individual, prosseguindo-se com um trabalho colaborativo entre três estudantes e, por fim, a apresentação de trabalhos ao grupo todo. Os alunos evidenciaram elevada motivação e participação ao longo dos diferentes momentos de ensino-aprendizagem em sala de aula. Neste contexto, foram desenvolvidas algumas competências importantes que o mercado de trabalho assim o exige, tais como o pensamento crítico, resolução de problemas, o trabalho de equipa, a comunicação oral e escrita, escuta ativa e a observação.