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Escolas Promotoras de Saúde em Angola: Avaliação de Hábitos Alimentares, Atividade Física e seus Determinantes em Adolescentes
No full textRESUMO - Introdução: As escolhas alimentares e os níveis de atividade física (AF) na
adolescência influenciam a saúde ao longo da vida. Este estudo teve como objetivo
avaliar os determinantes dos hábitos alimentares saudáveis (HAS) e da prática de AF
entre adolescentes angolanos. O modelo PRECEDE-PROCEED foi utilizado como
referencial teórico para estruturar a análise dos comportamentos e seus determinantes,
identificando necessidades e desafios no contexto das Escolas Promotoras de Saúde.
Método: Estudo observacional transversal com 130 adolescentes de 12 a 18 anos de
uma escola pública na Ilha de Luanda. A amostragem foi não probabilística. Foram
avaliados o comportamento alimentar (Índice KIDMED), determinantes do
comportamento alimentar (Healthy Diet Determinants Questionnaire), níveis de AF
(International Physical Activity Questionnaire) e determinantes de AF (Determinants of
Physical Activity Questionnaire). A análise incluiu estatísticas descritivas e, destacando
fatores pessoais, sociais e ambientais relacionados à alimentação e AF.
Resultados: A adesão a HAS foi moderada (58,27%) e os níveis de AF insuficientes
(78%). Crenças sobre as capacidades foi o fator com maior associação para o
cumprimento das recomendações de AF segundo a OMS. Determinantes como
autoeficácia e fatores sociais demonstraram influência significativa sobre os HA dos
adolescentes.
Conclusão: Fatores como crenças sobre as capacidades, autoeficácia e apoio social
são fatores determinantes na adoção de HAS e prática regular de AF entre
adolescentes. O desconhecimento destaca a importância de intervenções que ampliem
o conhecimento. Políticas públicas integradas e ações estruturadas nas escolas podem
desempenhar um papel fundamental na criação de contextos facilitadores, promovendo
escolhas saudáveis.ABSTRACT - Introduction:
Food choices and physical activity (PA) levels during adolescence influence health
throughout life. This study aimed to assess the determinants of healthy eating habits
(HEH) and PA practice among Angolan adolescents. The PRECEDE-PROCEED model
was used as a theoretical framework to structure the analysis of behaviors and their
determinants, identifying needs and challenges in the context of Health Promoting
Schools.
Method:
A cross-sectional observational study was conducted with 130 adolescents aged 12 to
18 years from a public school on Ilha de Luanda. Non-probabilistic convenience sampling
was used. Eating behavior (KIDMED Index), determinants of eating behavior (Healthy
Diet Determinants Questionnaire), PA levels (International Physical Activity
Questionnaire), and PA determinants (Determinants of Physical Activity Questionnaire)
were assessed. The analysis included descriptive statistics, highlighting personal, social,
and environmental factors related to eating and PA behaviors.
Results:
Adherence to HEH was moderate (58.27%) and PA levels were insufficient (78%).
Beliefs about capabilities showed the strongest association with meeting PA
recommendations according to the WHO. Determinants such as self-efficacy and social
factors demonstrated significant influence on adolescents' eating habits.
Conclusion:
Factors such as beliefs about capabilities, self-efficacy, and social support are key
determinants in the adoption of HEH and regular PA practice among adolescents. The
lack of knowledge highlights the importance of interventions aimed at increasing
awareness and strengthening confidence. Integrated public policies and structured
actions in schools can play a fundamental role in creating supportive environments that
promote healthy choices
Transforming Raw Data into Actionable Insights: A Business Intelligence Solution for a Small Company
No full textDissertation presented as the partial requirement for obtaining a Master's degree in Information Management, specialization in Knowledge Management and Business IntelligenceTourism is a vital sector in the Algarve region of Portugal, where boat tours to visit natural
attractions like the Benagil caves are a key part of the visitor experience. Providing a highquality service and understanding operational constraints, customer satisfaction, and
environmental impacts are essential for business success. This project focuses on Tridente
Boat Trips, a tour operator based in Armação de Pêra, and aims to process, integrate, and
analyze data collected from internal operational systems, TripAdvisor customer reviews, and
marine weather Application Programming Interfaces (APIs). The objective is to create a
comprehensive Business Intelligence (BI) solution to support data-driven decision-making.
Initially, the collected data was loaded into Azure SQL Database and subsequently migrated
to Microsoft Fabric, where a lakehouse architecture was implemented to structure the data
into raw and transformed layers. Using Microsoft Fabric’s Dataflow Gen2, the data was
cleaned, enriched, and modeled using a dimensional star schema approach. Finally, analytical
dashboards were developed in Power BI, providing insights concerning booking patterns,
operational performance, customer satisfaction, and the impact of sea conditions on tour
execution and cancellations. This project serves as real-world example of how Business
Intelligence platforms can enhance operational understanding and support strategic planning
in Small and medium-sized enterprises (SMEs) within the tourism sector
Biovantage - a company focused on the new frontier of drug development via organ-on-a-chip technology: competitive Landscape & Business Model
No full textWithin the "Building Companies Based on Science" field lab, this thesis focuses on creating
BioVantage, a startup leveraging state-of-the-art organ-on-chip (OoC) technology to transform
preclinical drug development. Anchored by a licensed neuromuscular junction-on-chip (NMJ OoC), BioVantage will initially specialize in neuromuscular diseases while exploring future
applications for heart- and liver-OoC. By integrating artificial intelligence in combination with
the OoC technology, our venture not only enhances the cost- and time-effectiveness and
accuracy of drug discovery, but also significantly reduces the reliance on animal testing. In this
report we detail a strategic business plan for BioVantage, positioning it as an ethical and
innovative partner in advancing preclinical drug research while redefining industry standards
Optimizing user conversion in an automotive marketplace: insights from behavioral analytics and predictive modelling
No full textThis study explores user behaviour on a digital marketplace to optimise conversion rates by
addressing drop-offs across the customer journey. Research objectives focus on identifying
bottlenecks and improving user transitions from Visitors to Enquirers. Using Exploratory
Data Analysis (EDA) and Predictive Modeling, key findings highlight navigation challenges,
engagement imbalances, and the impact of email and landing page strategies on conversions.
Recommendations include refining landing pages, enhancing CRM personalization, and
optimising mobile experiences to improve user engagement and platform effectiveness
How to activate an umbrella brand for multiple categories in the Swiss food retail market
No full textAs the competition between grocers in Switzerland increases, the positioning of each
retailer becomes more relevant. Lidl Switzerland, part of the international trading company
Schwarz Group, realizes opportunities to improve their brand perception. The work project aims
to demonstrate how to activate a new umbrella brand for multiple categories in the Swiss food
retail market. An understanding of brand activation and perception was developed by conducting
qualitative expert interviews and a quantitative shopper survey. These findings were turned into
strategic and operational recommendations for Lidl pointing out the importance of a strategic
framework, department-overarching collaboration, and creative marketing activities
Unlocking new revenue opportunities through strategic reflection and innovation: what are the financial implications of structural changes across ABRAÇO’s business units?
No full textAbraço is a Portuguese non-profit organisation dedicated to supporting individuals affected by
HIV, AIDS, and other sexually transmitted infections, while also promoting public health and
social initiatives. This work project examines innovative strategies to strengthen Abraço's
operational and financial sustainability by enhancing existing revenue streams and introducing
a new one. Therefore, the scope of the analysis consists of improving the psychological
consultation and food service units, alongside developing a go-to-market strategy for a new
business unit: a soft skills training programme to meet community needs while generating
sustainable income
Análise, Edição Prática e Proposta de Encenação de Ópera Portuguesa do Século XVIII: La Vera Costanza – Dramma Giocoso de Jerónimo Francisco de Lima (1785 e 1789)
No full textLa Vera Costanza é um dramma giocoso, com música de Jerónimo Francisco de
Lima, estreado em 1785, no Teatro de Salvaterra (em 3 actos) e repetido em 1789, no
Teatro da Ajuda (em 2 actos). O libretto – anónimo, mas atribuído, em algumas fontes,
a Francesco Puttini – foi, também, musicado por Pasquale Anfossi, em 1776, e por
Joseph Haydn, em 1779. O enredo principal centra-se no casamento secreto entre o
extravagante Conte Errico e Rosina, uma pescadora virtuosa, explorando os arquétipos
setecentistas de uma classe nobre cheia de vícios e de um povo honrado.
Jerónimo Francisco de Lima compõe esta peça durante o reinado de D. Maria I
para os músicos da Patriarcal e da Capela Real, que empregavam alguns dos maiores
virtuosi da época. A primeira didascália do libretto – “o final da Sinfonia será
acompanhado por ondas, relâmpagos e trovões” – mostra a centralidade da Cenografia
e as capacidades da Maquinaria Teatral dos Teatros Reais.
Este Projecto aborda La Vera Costanza em três capítulos: um introdutório,
generalista, dedicado ao panorama musical operático setecentista português e à
biografia e produção musical de Lima; um segundo, dedicado à análise das fontes
setecentistas; e um terceiro, dedicado à encenação:
O capítulo dedicado às fontes divide-se em três secções: a primeira aborda os
libretti: destaca as relações entre diferentes produções, inclui a tradução para português
e discute a sua autoria. A segunda secção dedica-se às partituras: desde a análise dos
manuscritos até à edição prática, permitindo a sua execução e preparando uma futura
edição crítica. A secção final aborda os registos de despesa e pagamento, esclarecendo
o investimento realizado e os recursos humanos envolvidos nas produções.
O capítulo dedicado à encenação também segue uma organização tripartida: a
primeira secção faz uma abordagem teórica a conceitos como Werktreue e
Autenticidade, destacando a sua influência no Renascimento da Música Antiga e na
prática historicamente informada. A segunda secção foca-se em questões específicas
sobre encenação: as práticas setecentistas; o surgimento da Regieoper; e práticas
contemporâneas. A terceira secção dedica-se à produção moderna de La Vera Costanza,
partindo de soluções para problemas como os papéis para castrati, a altura da afinação
e a execução em instrumentos de época; culminando numa proposta de encenação,
baseada na “multiplicidade”. Este conceito, além de guia para a encenação, reflecte o
trabalho realizado neste Projecto: a rejeição da procura pela Werktreue – ou pela
costanza – e a importância da pluralidade de “originais”, elogiando, apenas, a costanza
de Rosina pelo Conte e, não, a fidelidade exclusiva do encenador ou intérprete àsfontes
escritas ou a valores ou ideais anacrónicos.La Vera Costanza is a dramma giocoso with music by Jerónimo Francisco de Lima
premiered in 1785, at Teatro de Salvaterra (in three acts), and repeated in 1789, at
Teatro da Ajuda (in two acts). The libretto – anonymous, but attributed, in some sources,
to Francesco Puttini – was also set to music by Pasquale Anfossi, in 1776, and Joseph
Haydn, in 1779. The main plot centres the secret wedding between the extravagant
Conte Errico and Rosina, a virtuous fisherwoman, exploring the eighteenth-century
archetypes of a vice-ridden upper-class, and an honoured lower-class.
Jerónimo Francisco de Lima composes this piece during the reign of D. Maria I,
for the musicians of the Patriarcal and the Capela Real, that employed some of the
period’s biggest virtuosi. The first direction of the libretto – “the ending of the Symphony
should be accompanied by waves, lightning, and thunder” – shows the centrality of
Scenography and the capabilities of the Theatrical Machinery in the Royal Theatres.
This Project approaches La Vera Costanza in three chapters: an introductory one,
generalist, dedicated to the Portuguese operatic landscape in the 18th Century and to
Lima’s biography and musical production; a second one, dedicated to the analysis of the
18th century sources; and a third one, dedicated to the staging.
The chapter dedicated to the sources is divided into three sections: the first one
addresses the libretti: it highlights the connections between different productions,
includes the translation to Portuguese, and discusses its authorship. The second section
focuses on the scores: from the analysis of the manuscripts to the practical edition,
allowing its performance and preparing a future critical edition. The last section
addresses the expense and payment records, clarifying the investment made and the
human resources involved in the productions.
The chapter dedicated to the staging also follows a tripartite organization: the
first section makes a theoretical approach to concepts like Werktreue and Authenticity
highlighting their influence on the Early Music Revival and on historically informed
performance. The second section focuses on specific questions about staging: the 18th
century practices; the emergence of Regieoper; and contemporary practices. The third
section is dedicated to the modern production of La Vera Costanza, starting from
solutions to problems like roles written for castrati, tuning, and execution on period
instruments; culminating on a staging proposal based on “multiplicity.” This concept,
besides guiding for the staging, reflects the work done in this Project: the rejection of
any pursuit for Werktreue – or costanza – and the importance of the plurality of
“originals”, praising, only, Rosina’s costanza to the Count and, not the stage director’s
or performer’s exclusive fidelity to written sources or to anachronistic values or ideals
Video in Internal Organizational Communication: Technology acceptance, usability and emotional connection
No full textDissertation presented as the partial requirement for obtaining a Master's degree in Data Driven Marketing, specialization in Marketing IntelligenceInternal communication is essential for organizations to foster employee engagement in
order to achieve their goals and fulfill established objectives. Engagement remains a global
challenge, as improving the employee-employer relationship is crucial to organizational
performance. Our literature review did not identify studies that deeply explored employees’
perceptions of internal communication videos, particularly from the perspective of
emotional needs. This study aims to analyze such perceptions by considering technology
acceptance influenced by usability and emotional needs. The proposed questions assess
employees’ perceptions and the factors that may impact their intention to use video as a
medium for internal messaging. One key question is whether this behavior is influenced by
the emotional connection generated. Among the main findings, the positive impact of ease
of use on the intention to use stands out. The objective is to contribute to overall marketing
strategy by offering insights into the use of video as a support tool for internal
communication messages. The findings may be incorporated into the literature by testing
the effectiveness of the model and the theoretical and analytical mechanisms through which
the responses were obtained. The novelty lies in investigating user behavior regarding video
messages and how this may practically support decision-making on communication channels
to be used by companies. A broader understanding of employees’ perceptions may
encourage the adoption of technological and emotional mechanisms aligned with recipients’
preferences, potentially strengthening the connection between companies and employees.
The knowledge generated may serve as a foundation for further research in this field,
expanding understanding of the role of video messages in internal communication.A comunicação interna é fundamental para as organizações impulsionarem o engajamento
dos seus funcionários, a fim cumprir suas metas e atingir os objetivos estabelecidos. O
engajamento é um desafio global, já que melhorar a relação entre empregado e empregador
é crucial para o desempenho das organizações. Em nossa pesquisa bibliográfica não
encontramos estudos que abordassem com profundidade a percepção dos funcionários
sobre o video de comunicação interna, especialmente na perspectiva das necessidades
emocionais. Este estudo tem o propósito de analisar essa percepção levando em conta a
aceitação da tecnologia afetada pela usabilidade e as necessidades emocionais. As questões
colocadas avaliam a percepção e o que é capaz de impactar a intenção de uso do vídeo como
suporte de mensagens internas. Uma pergunta que se faz é se esse comportamento é
afetado pela conexão emoção gerada. Entre as principais descobertas, destaca-se o impacto
positivo da facilidade de uso na intenção de usar. O objetivo é contribuir para a estratégia
geral de marketing, oferecendo insights sobre o vídeo como suporte de mensagens de
comunicação interna. As descobertas podem ser inseridas na literatura ao testarem a
eficácia do modelo e os mecanismos teóricos e analíticos pelos quais obteve-se as respostas.
A novidade está na investigação do comportamento dos usuários das mensagens de vídeo e
o que poderá contribuir, na prática, para a tomada de decisões sobre os meios de
comunicação a serem utilizados pelas empresas. Uma compreensão mais abrangente sobre
a percepção do funcionário poderá incentivar a adoção de mecanismos tecnológicos e
emocionais alinhados às preferências dos destinatários, capaz de aumenter a conexão entre
empresa e colaborador. O conhecimento produzido poderá contribuir como base para
outras pesquisas neste campo de estudo, ampliando a compreensão sobre o papel das
mensagens em vídeo na comunicação interna
Exploring the Impact of ChatGPT on Workplace Productivity
No full textDissertation presented as the partial requirement for obtaining a Master's degree in Data Science and Advanced Analytics, specialization in Data ScienceGenerative artificial intelligence (GenAI) has garnered significant attention for its ability to
produce human-like text and assist in a variety of professional tasks. ChatGPT, one prominent
GenAI tool, reached over 100 million users shortly after its launch in 2022, signaling
widespread interest and rapid adoption. Despite growing enthusiasm, research examining
ChatGPT’s direct impact on workplace productivity and perceived organizational benefits
remains limited. This thesis seeks to fill this gap by investigating the factors driving ChatGPT
adoption and the resulting effects on individual performance outcomes, drawing upon
established theoretical models such as the unified theory of acceptance and use of technology
(UTAUT) and information systems (IS) success frameworks. Through a survey-based empirical
study, we aim to elucidate the mechanisms by which ChatGPT can enhance professional
efficiency and create value in modern work environments
AI vs Non-AI Tools in the Skincare Market: A Study on Consumer Trust, Enjoyment and Loyalty
No full textDissertation presented as the partial requirement for obtaining a Master's degree in Data Driven Marketing, specialization in Data Science for MarketingThis thesis examines the impact of AI-driven personalization on consumer satisfaction and
brand loyalty within the skincare industry. Employing a quantitative experimental design,
participants were randomly assigned to interact with either an AI-assisted or a human-assisted
recommendation scenario. The study investigated the mediating roles of trust, enjoyment,
and perceived personalization in the relationship between the recommendation approach and
key consumer outcomes, as well as the moderating effect of familiarity with AI. Results
indicate that while AI-driven tools significantly reduced perceptions of trust, enjoyment, and
personalization, only enjoyment emerged as a consistent mediator influencing both
satisfaction and brand loyalty. In contrast, trust and perceived personalization did not reliably
mediate these relationships, suggesting that the presence of AI alone does not guarantee
improved consumer outcomes. Furthermore, the direct effects of the recommendation
approach on satisfaction and brand loyalty were significant, yet the overall total effects were
undermined by competing indirect influences. These findings highlight that merely
implementing AI is insufficient; the design and presentation of AI interfaces must be tailored
to evoke positive affective responses and ensure clarity in personalization. From a managerial
perspective, these insights call for strategic enhancements in AI-driven customer experiences
through increased interactivity and emotional engagement. The study contributes to the
academic discourse by challenging prevailing assumptions regarding AI’s automatic benefits
and by underscoring the necessity of aligning technological innovations with consumer
expectations in the highly personalized context of skincare