REPOSITÓRIO P.PORTO
Repositório Científico do Politécnico do Porto
Entradas recentes
Film tourism and the image of the destination: preliminary impacts on host communities
Publication . Liberato, Pedro; Sousa, Bruno; Brito, Miguel; Liberato, Dália; Santos, José Duarte
In recent decades, film tourism has expanded throughout the world. Increasingly, authors present the definitions, behaviors, and motivations of film tourists. Film tourism has a range of positive impacts, such as strengthening scenic beauty, reinforcing local pride, preserving local culture, conserving natural resources, attracting investment, improving local infrastructure, increasing the number of facilities, and broadening employment opportunities. The main purpose was defined based on understanding how film tourism and the image of the destination impact host communities in Portugal. In addition, three specific objectives were defined: to evaluate the attractiveness of Portugal as a cinematographic destination using cognitive image; to analyze sociodemographic characteristics with the impact of film tourism; and to evaluate the affective image of the host community because of the impacts of film tourism. To respond to these objectives, a questionnaire was created and administered to 125 residents in Portugal. From the data collected and the application of the ANOVA test and Pearson correlation, it is concluded that the age group of the host community determines the impacts of film tourism on the location and the impacts of film tourism will determine the feeling of the local community when viewing Portugal in films/series. In terms of the limitations of the study, it is important to note that there is still not enough up-to-date information on the concept of film tourism. Furthermore, the length of the questionnaire constitutes a constraint on attracting participants to this study. In future studies, it is proposed to analyze cinematographic tourism by region, considering the works filmed in these locations. Furthermore, the creation of focus groups and exploratory interviews is essential for the exchange of ideas and knowledge.
Capital psicológico, satisfação coma chefia e saúde mental
Publication . Ribeiro, Maria Teresa Magalhães; Araújo, Manuel Salvador Gomes
A Saúde Mental (SM) nas organizações tem acrescido atenção nos últimos anos, reconhecendo que o bem-estar psicológico dos colaboradores é um fator crucial para o desempenho, produtividade e sustentabilidade das empresas. A área dos Recursos Humanos (RH) desempenha um papel fulcral neste tema, uma vez que são responsáveis por desenvolver políticas, práticas e programas que promovam um ambiente de trabalho saudável e suportam o equilibrio entre a vida profissional e pessoal. Este estudo tem como objetivo geral compreender e investigar a relação entre capital psicológico (PsyCap), a SM e a Satisfação com o Líder (SL). Os objetivos especificos são: (1) descrever os níveis de Psycap, SL e da SM; (2) Conhecer o tipo de relação entre PsyCap, de SL e de SM; (3) Predizer a influência que o PsyCap e a SL têm na SM; (4) Explorar diferenças do PsyCap, da SL e da SM, considerando as variáveis sociodemográficas e socioprofissionais. Para alcançar estes objetivos, a investigação executou uma abordagem quantativa com um estudo tranversal numa amostra de conveniência, a recolha de dados foi obtida utilizando o programa IMB SPSS Statistics versão 29, com recurso à aplicação de um inquérito por questionário. Após a análise dos dados, com uma amostra de 153 individuos, os resultados revelaram que na generalidade, a amostra é composta por indivíduos que têm níveis altos de PsyCap, a perceção da SL é globalmente positiva; a SM está fortemente associada ao PsyCap e à SL; o sexo dos participantes, ter um cargo de chefia e a escolariedade são fatores relevantes na diferenciação do PsyCap e da SL. São discutidos os resultados à luz dos estudos empíricos apresentados, assim como são apresentadas sugestões para futuros trabalhos de investigação, assim como para a intervenção profissional.
A estreita relação entre a auditoria e o controlo interno: principais diferenças existentes no controlo interno entre a PME e a grande empresa
Publication . Guedes, Ana Rita Nogueira; Torres, Cláudia Maria Teixeira Pinto Gomes; Torres, Cristina Maria Dias Pereira
Num contexto em que a transparência e a confiança são pilares fundamentais da gestão organizacional, a presente dissertação analisa o papel da Auditoria, com especial enfoque na Auditoria Interna (AI) e no Controlo Interno (CI), enquanto instrumentos estratégicos para a promoção da eficiência e da fiabilidade nas organizações. O estudo procura compreender de que forma a AI contribui para o fortalecimento do CI e para a melhoria dos processos de gestão, considerando as diferenças na aplicação destes mecanismos entre Pequenas e Médias Empresas (PME) e Grandes Empresas (GE).
Recorrendo a uma abordagem quantitativa, foi aplicado um questionário a 92 empresas, obtendo-se 123 respostas válidas, que permitiram testar empiricamente as hipóteses formuladas. Os resultados evidenciam que, nas GE, a AI assume um papel mais formal e estratégico, refletindo-se em Sistemas de Controlo Interno (SCI) robustos e monitorizados. Nas PME, apesar de reconhecida a importância dos controlos, a limitação de recursos e a centralização das decisões conduzem a práticas menos formalizadas, mas frequentemente mais flexíveis e adaptáveis.
Conclui-se que a integração entre AI e o CI é essencial para aumentar a eficácia, fiabilidade e sustentabilidade das organizações, sendo que a adoção de mecanismos de controlo ajustados à dimensão e complexidade de cada empresa contribui para uma gestão mais informada, transparente e orientada para a criação de valor.
Intelligent Batch Processing System in a Complex Distributed Computer Environment
Publication . PINHEIRO, MARCO ANDRÉ MARINHO; Pereira, António Jorge Santos
In the rapidly evolving digital era, the ability to manage and process vast amounts of data has
become paramount. This challenge has promoted the use of batch processing in distributed
systems, an approach integral to activities like in-depth data analysis, warehousing, and
harnessing business intelligence. Within this domain, Retail Consult stands as a notable
entity, finding numerous retail solutions via Oracle Retail technology. These solutions are
grounded in rigorous daily and nightly batch processing schedules, where precise timing is
critical to ensure smooth business operations.
However, the current landscape of batch processing, although populated with a variety of
solutions, struggles with the magnified scale and intricacy of today’s data. Challenges emerge
in the form of configuration nuances, real-time execution demands, consistent updates, and
the need for vigilant monitoring. Retail Consult’s diverse client base and unique technological
specifications only amplify these challenges.
To navigate this intricate landscape, Retail Consult, in partnership with the Laboratório de
Inteligência Artificial e Ciência de Computadores (LIACC) of Faculdade de Engenharia da
Universidade do Porto (FEUP), aspires to innovate an intelligent process scheduler — a
solution designed for adaptability. This scheduler, in spite of the multifaceted demands of
the Complex Distributed Computer Environments, aims to harmonize it and promises compatibility
across a diversity of platforms, the capability to manage geographically disparate
operations, and the sophistication to oversee a gamut of automated tasks. Set to be a reference
in batch processing, the ultimate goal of this system is to orchestrate these critical
business processes with unparalleled efficiency and effectiveness.
Mutual promotion on the mechanical and tribological properties of the nacre-like self-lubricant film designed for demanding green tribological applications
Publication . Hongbo, Ju; Luan, Jing; Wang, Yiping; Bondarev, Andrey; Evaristo, Manuel; Geng, Yaoxiang; Xu, Junhua; Cavaleiro, Albano; Fernandes, Filipe; Fernandes, Filipe
The inverse relationship between the tribological and mechanical properties of environmentally friendly self-lubricant films, induced by the addition of soft lubricant agents that can diffuse quickly at elevated temperatures, has hindered the widespread use of these materials in industrial applications. This paper took this challenge to break through the above established relationship by developing novel nacre-like multilayered Mo2N–SiNx/Ag–SiNx self-lubricant films via an radio frequency (RF) magnetron sputtering system for real applications where harsh conditions at elevated temperatures exist. The multilayered films, deposited by alternating deposition of Mo2N–SiNx and Ag–SiNx modulation layers, exhibited three phases of face-centered cubic (fcc) Mo2N, fcc Ag and SiNx, where SiNx encapsulated the nano-crystalline Mo2N and Ag phases in each layer to successfully induce a “brick and mortar” nacre-like microstructure (in the area without the coherent structure). The epitaxy growth of the Ag–SiNx layers with thickness below 6 nm on the Mo2N template resulted in an extraordinary increase in both the hardness and elastic modulus, which was able to prevent severe degradation of the mechanical properties caused by the addition of Ag. The room-temperature anti-friction property could be enhanced by increasing the Ag–SiNx layer thickness due to the excellent lubricant nature of Ag, which acts in synergy with Mo2N, while the wear rate below 4×10−8 mm3/(N·mm) was due to the high mechanical strength. The tribological properties at 600 °C also benefited from the interlocked multilayered architecture, which allowed an extreme low friction coefficient of ~0.12 and a negligible wear rate (WR). This behavior was attributed to the synergism between the lubricant action of Ag and Mo2N and the tribo-phase transformation from Ag2Mo4O13 to Ag2MoO4.