TEDE Coleção: Dissertações defendidas no âmbito do Programa.
https://tedebc.ufma.br/jspui/handle/tede/tede/1314
Dissertações defendidas no âmbito do Programa.2024-03-28T13:49:40ZDesenvolvimento de Artefatos para Apoiar o Design e a Avaliação de Chatbots focando em Usabilidade e User Experience
https://tedebc.ufma.br/jspui/handle/tede/tede/5135
Título: Desenvolvimento de Artefatos para Apoiar o Design e a Avaliação de Chatbots focando em Usabilidade e User Experience
Autor: MAFRA, Malu Gabriele Silva
Primeiro orientador: RIVERO CABREJOS, Luis Jorge Enrique
Abstract: Chatbots are software that communicate and interact in a human-like way, through
natural language, with human users. These tools are useful for a variety of purposes
ranging from customer service, sales, education and learning, healthcare, to entertainment.
In recent years, chatbots have become popular and there has been significant growth in
the emergence of these tools on the market, especially textual chatbots. This rise has
encouraged developers to create their own tools, in addition to attracting the efforts of
researchers to this area. Despite the emphasis, there is a need to propose technologies
capable of supporting developers and development teams in the process of designing and
evaluating quality chatbots, since although these tools are on the rise, technologies to
guarantee their quality and user satisfaction are not has kept pace. Given this, this master’s
research proposes to develop artifacts applicable to the design and evaluation process
of chatbots, based on quality attributes related to Usability and User Experience (UX),
identified in literature reviews. The focus on Usability and UX was due to the impact
that these aspects have on user satisfaction and the perceived quality of the system. The
f
irst artifact is the inspection checklist U2Chatbot, developed with the aim of assisting
development teams in the process of identifying defects in text-based chatbots, improving
the quality of these tools before their launch on the market. Despite the creation of
checklist, it was observed that some developers have a visual need to understand important
aspects that chatbots should display and that for this audience, only the U2Chatbot
check items would not be enough. Thus, in a complementary way, the DP-U2Chatbot
artifact was developed, which is a set of interface design recommendations, containing 21
important instructions to support developers in the process of building chatbots. After
developing the proposed technologies, they were subjected to the necessary evaluations.
To evaluate checklist U2Chatbot, an experimental study was conducted and the results
indicated that participants found the technology useful for discovering defects in chatbots,
however, ease of use could improve. Furthermore, it was found that the participants’
experience did not significantly influence the efficacy results and efficiency of the technique.
For the DP-U2Chatbot design patterns, a simple assessment was carried out regarding the
understandability and usefulness of the technology. The results indicated that in general
the technology is easy to understand and useful in supporting the design of chatbots,
however, the visual examples of some patterns could be improved to make them clearer to
developers.
Instituição: Universidade Federal do Maranhão
Tipo do documento: Dissertação2023-12-13T00:00:00ZCusto Total de Propriedade Aplicado à Migração de Sistemas Legados para Ambiente de Computação em Nuvem
https://tedebc.ufma.br/jspui/handle/tede/tede/5060
Título: Custo Total de Propriedade Aplicado à Migração de Sistemas Legados para Ambiente de Computação em Nuvem
Autor: MAIA, Anilton Bezerra
Primeiro orientador: TEIXEIRA, Mário Antonio Meireles
Abstract: With the widespread adoption of cloud adoption, one of the main challenges is the
lack of a comprehensive strategy and deep understanding of the characteristics
involved in migrating from legacy systems to the cloud computing environment,
making adoption planning more intended. Migrating legacy systems to cloud
platforms is costly, as well as requiring a rigid process that can validate operational
costs, investments, technical and non-technical challenges. In this work, we
present an approach based on total cost of ownership - TCO for decision-making
on the migration of legacy systems to a cloud computing environment. In the
experiments carried out, an 89% financial advantage was achieved in relation to
the traditional model (on-premise), as well as other additional advantages such as
security, availability and scalability. This demonstrates that the TCO-based
approach is an effective solution for those looking to migrate their legacy systems
to the cloud computing environment.
Instituição: Universidade Federal do Maranhão
Tipo do documento: Dissertação2023-11-10T00:00:00ZAnálise da integração da metodologia ativa Coding Dojo Randori a uma plataforma de ensino e aprendizagem de algoritmos
https://tedebc.ufma.br/jspui/handle/tede/tede/5027
Título: Análise da integração da metodologia ativa Coding Dojo Randori a uma plataforma de ensino e aprendizagem de algoritmos
Autor: SOUSA, Jovennilton Soares de
Primeiro orientador: SOARES NETO, Carlos de Salles
Abstract: This study investigates the integration of the Coding Dojo methodology, in the Randori
format, into a platform for teaching and learning algorithms. The question to be addressed
is how to reduce learning difficulties in algorithm-related disciplines and, consequently,
decrease student demotivation. For this purpose, an exploratory and descriptive research
was conducted, as well as an investigation with teachers through a questionnaire, aiming
to understand their experiences and difficulties in adopting active methodologies. In
accordance with the collected data, an algorithm teaching and learning platform was
adapted to incorporate the active methodology of Coding Dojo Randori. Subsequently,
this proposal was tested in a pilot session and later implemented in remote sessions
with students. At the end of each session, student receptivity was assessed through an
evaluation questionnaire and observations during the sessions. The results obtained support
the hypothesis that the use of active methodologies, such as Coding Dojo, when integrated
into teaching platforms, can act as a facilitator and potentially enhance motivation and
learning in algorithms.
Instituição: Universidade Federal do Maranhão
Tipo do documento: Dissertação2023-09-29T00:00:00ZEspecificação e Monitoramento de Requisitos de Qualidade de Contexto para Aplicações de Fenotipagem Digital
https://tedebc.ufma.br/jspui/handle/tede/tede/4993
Título: Especificação e Monitoramento de Requisitos de Qualidade de Contexto para Aplicações de Fenotipagem Digital
Autor: LAURINDO, Luís Eduardo Costa
Primeiro orientador: SILVA, Francisco José da Silva e
Abstract: Digital phenotyping applications use sensor data from personal digital devices (smartphones,
smart bands) to quantify the moment-to-moment human phenotype at the individual
in-situ level. Some aspects can degrade the Quality of Context (QoC) of applications, such
as inaccurate sensor information, wireless communication technologies used in acquiring
and distributing information, scalability problems, and intermittent connection due to user
mobility. Ensuring the quality and distribution of the data used is an essential requirement
in the domain of these applications. Therefore, this study conceived a process to incorporate
QoC requirements in applications for digital phenotyping. The process consists of five steps,
namely: (i) specifying the QoC requirements using a metamodel; (ii) target code generation
through a transformation mechanism that receives the requirements specification as input;
(iii) the incorporation in the application of the generated source codes to guarantee the
QoC requirements; (iv) evaluation and monitoring of QoC parameters; (iv) visualization
of the monitoring result through Dashboards, which aims to provide the developer with
an environment in which it is possible to monitor the quality level of the application
instances. A case study was developed to evaluate the applicability of the proposed process
in a typical application of digital phenotyping. Additionally, experiments were carried
out to analyze the application’s performance with and without the QoC mechanisms to
evaluate the impact of the QoC during its execution. By applying the process proposed
in the developed case study, we observed the ease of incorporating QoC requirements
in applications for digital phenotyping. When carrying out the QoC experiments, it was
possible to verify that the application instrumented with the QoC mechanisms guarantees
the quality and delivery of the information that will be used for the inference of situations
of interest.
Instituição: Universidade Federal do Maranhão
Tipo do documento: Dissertação2023-08-17T00:00:00Z