Mobile Cloud Computing joins two complementary paradigms by allowing the migration of tasks and d... more Mobile Cloud Computing joins two complementary paradigms by allowing the migration of tasks and data from resource-constrained devices into remote servers with higher processing capabilities in an approach known as offloading. An essential aspect of any offloading solution is the privacy support of the information transferred among mobile devices and remote servers. A common solution to address privacy issues in data transmission is the use of encryption. Nevertheless, encryption algorithms impose additional processing tasks that impact both on the offloading performance and the power consumption of mobile devices. This paper presents a study on the impact of using cryptographic algorithms in the CAOS offloading platform. Results from experiments show that the encryption time represents 2.17% to 5.35% of the total offloading time depending on the amount of offloaded data, encryption key size, and the place to run the offloaded task. Similar behavior occurred regarding energy consumption.
Resumo. Estudos têm mostrado os benefícios das mensagens de celular na educação. Pesquisadores ar... more Resumo. Estudos têm mostrado os benefícios das mensagens de celular na educação. Pesquisadores argumentam que estudos devem ser conduzidos para se avaliar a extensão dos benefícios e melhor identificar em quais contextos as mensagens móveis são aplicadas da melhor forma. Nesse sentido, esse artigo examinou a utilização das mensagens SMS em um curso a distância com 474 alunos. O principal objetivo foi descobrir se o uso desta tecnologia poderia melhorar a participação dos estudantes no curso. Os estudantes foram divididos em dois grupos e os resultados mostram que os alunos que receberam as mensagens móveis tiveram resultados significativamente superiores aqueles que não receberam, sendo quase 20% mais efetivos com relação ao cumprimento das atividades e até 78 horas mais rápidos para concluí-las. Palavras-chave: Mobile Learning, Mensagens de Celular e E-Learning. Analysis of the use of mobile messages in the improvement of the participation of students in distance courses: a case study Abstract. Studies have shown the benefits of mobile messages in education. Researchers argue that more studies must be conducted to assess the extension of these benefits, and to better identify in which context mobile messaging is the best approach to be applied. In this sense, our study examined a postgraduate class consisting of 474 learners in which Short Message Service was used. The main goal was to find out if this technology would improve student participation in the course. Two groups of learners were created and the results showed that students who received mobile messaging outperformed significantly students than did not receive. They were almost 20% more effective at completing their assigned activity and up to 78 hours faster than students from the control group.
Due to the large number of photos that are currently being generated, it is very important to hav... more Due to the large number of photos that are currently being generated, it is very important to have techniques to organize, search for, and retrieve such images. Photo annotation plays a key role in these mechanisms because it can link raw data (photos) to specific information that is essential for human beings to handle large amounts of content. However, the generation of photo annotation is still a difficult problem to solve as part of a well-known challenge called the semantic gap. In this paper, a literature review was conducted with the aim of investigating the most popular methods employed to produce photo annotations. Based on the papers surveyed, we identified that People (“Who?”), Location (“Where?”), and Event (“Where? When?”) are the most important features of photo annotation. We also established comparisons between similar photo annotation methods, highlighting key aspects of the most commonly used approaches. Moreover, we provide an overview of a general photo annotation process and present the main aspects of photo annotation representation comprising formats, context of usage, advantages and disadvantages. Finally, we discuss ways to improve photo annotation methods and present some future research guidelines.
Researchers have explored the effectiveness of combining active methodologies and gamification in... more Researchers have explored the effectiveness of combining active methodologies and gamification in the educational context for student interaction and motivation. Therefore, sharing experiences using these methodologies in various contexts is essential in identifying their benefits and challenges. This paper focuses on adopting Flipped Classroom methodology with gamification elements in teaching Software Process Quality, specifically MPS.BR. The experience involved 40 undergraduate students of Software Engineering and Computer Science at the Russas Campus of the Federal University of Ceará. Based on students' feedback, the gamified study scripts, point exchange systems, and quizzes provided positive experiences. However, students encountered difficulties using the adopted platform, which was a negative aspect of the experience. Resumo. O uso combinado de metodologias ativas e gamificação tem sido explorado no contexto educacional, por se mostrarem eficazes para a interação e motivação dos estudantes. Torna-se relevante compartilhar experiências com essas metodologias em diversos contextos, identificando seus benefícios e desafios. Este artigo descreve a adoção de Sala de Aula Invertida (SAI) combinada com elementos de gamificação no ensino de Qualidade de Processos de Software com foco no MPS.BR. A experiência envolveu 40 estudantes de graduação em Engenharia de Software e Ciência da Computação da Universidade Federal do Ceará-Campus de Russas. O feedback dos estudantes indicou que roteiros de estudo gamificados, o sistema de troca de pontos e quizzes proporcionaram boas experiências. Como pontos negativos, os estudantes indicaram dificuldades no uso da plataforma adotada.
Anais do ... Simpósio Brasileiro de Informática na Educação, Oct 26, 2015
Field trips are used by teachers as educational practices to motivate student learning. Research ... more Field trips are used by teachers as educational practices to motivate student learning. Research has been undertaken to expand the benefits provided by these activities through mobile and ubiquitous systems. An approach to the construction of this type of software is to use model-driven development through modeling languages. In the area of teaching and learning systems, the educational modeling language that stands out is IMS LD. However, this model has limitations when considering mobile and ubiquitous technologies applied in field trips. Thus, this paper proposes an extension to the IMS LD specification for mobile and ubiquitous systems applied to field trips. A scenario and an application that demonstrate how the extension works are also presented.
The Internet of Things (IoT) represents a new paradigm in the Internet history and in the way peo... more The Internet of Things (IoT) represents a new paradigm in the Internet history and in the way people interact with everyday objects. Academics and several industry segments have been working over the past years to make this vision possible. It is estimated that there will be dozens or hundreds of devices simultaneously connected to the user's network (e.g., in their home) in the next years, which can make the discovery and interaction with smart object more complicated to IoT users increasingly. This work proposes a smart objects discovery approach using image recognition, which aims to make this task quicker and more selective from an user perspective. An initial assessment has shown that the proposed mechanism can reduce the discovery time in a scenario with several devices, and additionally ensure a good level of user satisfaction.
Anais do ... Simpósio Brasileiro de Informática na Educação, Oct 26, 2015
Field classes favor an approach at the same time more complex and less abstract about the phenome... more Field classes favor an approach at the same time more complex and less abstract about the phenomena studied in different domains of knowledge. By adding mobile and ubiquitous technologies we obtain the Ubiquitous Field Classes, which have benefits when compared to traditional. This study presents a systematic mapping with 63 papers on the use of mobile and ubiquitous technologies in education, published between the years 2010 and 2014. Among the main results, we found that most applications is focused on the natural sciences in basic education, it uses the Android platform and is location-aware. From this survey, we identified a number of important requirements for ubiquitous field classes. For demonstration purposes, we present two applications that show the requirements identified.
Studies have shown the benefits of mobile messages in education. They assist to fix the classroom... more Studies have shown the benefits of mobile messages in education. They assist to fix the classroom lectures, help to remind study activities, and also allow the exchange of education messages among classmates. Researchers argue that more studies must be conducted to assess the extension of these benefits, and to better identify in which context mobile messaging is the best approach to be applied. In this sense, our study examined a postgraduate class consisting of 474 learners in which Short Message Service was used. The main goal was to find out if this technology would improve student participation in the course. Two groups of learners were created, control and experimental, in order to analyze the activities' fulfillment rate and the response time. The results from the data analysis showed that students who received mobile messaging outperformed significantly students from the control group. The experimental group had better results both in completion rate and response time. They were almost 20% more effective at completing their assigned activity and up to 78 hours faster than students from the control group. In addition, a questionnaire was implemented in order to evaluate participants' satisfaction with the use of SMS. Results found that most part of the students were satisfied and enjoyed the use of the mobile messages. CCS Concepts • Human-centered computing ➝ Ubiquitous and mobile computing ➝Empirical studies in ubiquitous and mobile computing.
Chemistry teaching presents many challenges. Most students consider it a complex and abstract sci... more Chemistry teaching presents many challenges. Most students consider it a complex and abstract science theme, making learning difficult. In the context of deaf students, these challenges are even more significant since most of the teaching methodologies focus on the hearing public. Games present themselves as promising tools to minimize these problems. The literature points out the existence of several digital games to teach Chemistry, however, there is still an inexpressive amount of games translated for the deaf. In this context, our study reports the development and evaluation of an adapted version of the game Interactions 500 to teach Organic Chemistry to deaf and hearing students. Resumo. O ensino de Química apresenta muitos desafios, poisé uma disciplina considerada pela maioria dos alunos como complexa e abstrata, dificultando sua aprendizagem. No contexto dos alunos surdos, os desafios são ainda maiores, visto que, na grande maioria, as metodologias de ensino aplicadas são pautadas no público ouvinte. Jogos educacionais se apresentam como ferramentas promissoras para minimizar tais problemáticas. A literatura aponta a existência de vários jogos digitais para ensinar Química, contudo, há uma quantidade ainda inexpressiva de jogos traduzidos para surdos. Neste contexto, este estudo apresenta o relato de desenvolvimento e avaliação de uma versão adaptada do jogo Interactions 500 no ensino de Química Orgânica para alunos surdos e ouvintes.
Considering the hype surrounding the Cyberpunk 2077 game, the theme of transhumanity has reappear... more Considering the hype surrounding the Cyberpunk 2077 game, the theme of transhumanity has reappeared in the news. This article aimed to analyze the theme of transhumanism in games. The relationship of the theme with the representative aspects of the design was verified. For this, we created a table of questions, as a proof of concept, with elements of the theory of narration by the environment, which allowed us to verify the quality and in the future a direct comparison between other digital games. The way these elements are ideologically described, reflected, and inserted helps to solidify the environmental narrative in the game environment. Cyberpunk 2077 introduced and adapted the ideology of transhumanity in its scenery. Some items have greater immersion than the others evaluated.
Development of Context-Aware and Mobile applications have significant challenges, such as the com... more Development of Context-Aware and Mobile applications have significant challenges, such as the complexity of sensor access code and the heterogeneity of devices. The Google Awareness API is an initiative to mitigate this complexity. This paper presents an analysis of GitHub projects involving Awareness API. However, the results showed that the spread of this API among the developers community is still incipient. We propose to extend a tool to allow high-level modeling of context acquisition and code generation compatible with Awareness API. It reduces the complexity of acquiring contextual information and managing contextual rules.
In 2020, the COVID-19 pandemic affected all sectors of society worldwide, including education. Du... more In 2020, the COVID-19 pandemic affected all sectors of society worldwide, including education. Due to the social isolation requirement, several educational institutions used the Emergency Remote Teaching (ERT) approach to keep their courses active, at least partially. This document provides an experience report about using ERT in two courses (Distributed Systems and Software Development for the Cloud) that deal with the Development of Distributed Software Systems. In these two courses, we used three main approaches: synchronous online classes, asynchronous learning videos, and online material available on a Git repository. In some classes, we also adopted active methodologies such as problem-based learning and flipped classroom. Students were evaluated by seminars, tests, and programming activities. In the end, we collected their feedback from an online survey. Forty-two (42) graduate and undergraduate students reported a good level of acceptance of our ERT model. Part of the students had difficulties in doing their programming homework, and the main obstacles reported by them were: (i) their psychological context and (ii) to reconcile the course activities with home tasks as well as the demands of their jobs. Once practical experiences in ERT will be essential for a while given the uncertainty about how long COVID-19 pandemic will remain active, we expect the highlights and drawbacks of our experience could help other professors in planning their courses.
ACM Transactions on Accessible Computing, Jun 30, 2020
BACKGROUND: Knowing their current position in the surroundings constitutes one of the biggest cha... more BACKGROUND: Knowing their current position in the surroundings constitutes one of the biggest challenges faced by people with visual disabilities when they move around. For them, it is difficult to be aware of the direction in which they are going, and the location of nearby objects and obstacles. In this context, obtaining relevant spatial information is always very significant to these individuals. Hence, the research in the development of assistive technologies for needs and perspectives of people who are blind has been a promising area in terms of the orientation and mobility (O&M) challenges. OBJECTIVE: The purpose of this study is to systematically examine the literature on &M virtual environments designed to support indoor navigation to identify techniques for both developing and evaluating the usability and cognitive impact of these applications. METHODS: A systematic literature review (SLR) was performed, considering population, intervention, outcomes, and study design as eligibility criteria. After a filtering process from 987 works retrieved from six databases, we extracted data from 51 papers, which meet the study selection criteria. RESULTS: The analysis of the 51 papers describing 31 O&M indoor virtual environments, indicated that O&M virtual environments to support indoor navigation are usually designed for desktop, adopt spatial audio as way to support orientation, and use joystick as primary interaction device. Regarding evaluation techniques, questionnaires, interviews, user observation, and performance logs are commonly used to evaluate usability in this context. In tests involving users, the participants are usually adults aged 21–59 years, who individually spend about 90 minutes split in usually two evaluation sessions. Most papers do not report any strategies to evaluate the cognitive impact of O&M virtual environments on users’ navigational and wayfinding skills. Thirteen papers (25.49%) reported the conduction of experiments or quasi-experiments and demonstrated pieces of evidence associated with a positive cognitive impact resultant from O&M indoor virtual environments usage. Finally, only four papers (7.84%) reported the development of indoor maps editors for O&M virtual environments. CONCLUSION: Our SLR summarizes the characteristics of 32 O&M virtual environments. It compiles state-of-the-art for indoor simulations in this domain and highlights their challenges and impacts in O&M training. Also, the absence of clear guidelines to design and evaluate O&M virtual environments and the few available computer editors of indoor maps appear as research opportunities.
Este artigo apresenta uma proposta de tese de doutorado que tem como objetivo principal introduzi... more Este artigo apresenta uma proposta de tese de doutorado que tem como objetivo principal introduzir Adaptive Testing (AT) em um sistema para a preparação de estudantes para o Enade. Esperamos que o desenvolvimento deste trabalho contribua para que estudantes possam se preparar melhor para o Enade e que as IESs possam diagnosticar de forma precoce o nível de conhecimento dos estudantes baseado nas competências adquiridas e assim definir estratégias de resgate de conteúdos. Dessa forma, os estudantes estarão melhor alinhados com o perfil do egresso esperado pelas Diretrizes Curriculares dos seus cursos.
Diversas metodologias ativas vem sendo estudadas e aplicadas no ensino de Engenharia de Software ... more Diversas metodologias ativas vem sendo estudadas e aplicadas no ensino de Engenharia de Software com o propósito de tornar as aulas mais dinâmicas e engajadoras. Neste artigo, é relatada uma experiência de ensino que combina a metodologia de Sala de Aula Invertida (SAI) com técnicas de Gamificação. A abordagem envolveu a preparação de roteiros de estudo com elementos de gamificação, atividades práticas gamificadas em sala de aula, um sistema de recompensas que permitia a troca de pontos por benefícios nas avaliações da disciplina e badges de personalidades importantes da área de estudo. O relato descreve uma experiência de aplicação da abordagem em uma turma de Engenharia de Requisitos do ensino superior com 41 estudantes após a retomada das atividades presenciais. A experiência compreendeu 6 aulas durante 3 semanas. A percepção dos estudantes foi positiva em relação aos roteiros de estudo, formato da aula e impacto na aprendizagem. Em relação ao aprendizado, observou-se um impacto positivo em três dos quatro conteúdos aplicados com um nível de significância de 95%, atingindo um ganho médio de até 32.1% na nota dos alunos comparando pós e pré-testes. CCS CONCEPTS • Social and professional topics → Computing education; • Software and its engineering → Requirements analysis.
Este trabalho apresenta um Mapeamento Sistemático da Literatura (MSL) que busca identificar e dis... more Este trabalho apresenta um Mapeamento Sistemático da Literatura (MSL) que busca identificar e discutir especificamente quais técnicas estão sendo usadas para analisar dados do Enade ou implementar ações diagnósticas para o acompanhamento das competências necessárias para o perfil do egresso que realiza tal exame. Dos 32 trabalhos incluídos nesta MSL, este artigo, em especial, analisa os 12 trabalhos que focam na análise do Enade de cursos de Computação. Foram encontrados trabalhos de cada uma das três abordagens, as quais são uso de machine learning (ML), uso de estatística e desenvolvimento de sistemas. Percebe-se que o principal foco dos trabalhos é analisar fatores que impactam nas notas dos alunos. A estatística descritiva foi a mais utilizada nos trabalhos. Em relação a ML as abordagens mais utilizada são a de classificação e agrupamento. Os sistemas encontrados se limitam a aplicação de provas e a análise desses resultados. Em apenas 01 deles, foi realizado uso de gamificação. CCS CONCEPTS • Social and professional topics → Computing education.
Brazilian Journal of Computers in Education, Dec 31, 2019
As aulas de campo promovem as habilidades dos estudantes ao incrementarem a capacidade de observa... more As aulas de campo promovem as habilidades dos estudantes ao incrementarem a capacidade de observação e descoberta em várias áreas do conhecimento. Ao inserir tecnologias ubíquas nas aulas de campo, como sensores e atuadores, estas aulas apresentam benefícios quando comparadas às aulas de campo tradicionais. Entretanto, no contexto destas aulas, o desenvolvimento de sistemas ubíquos impõe desafios como o tratamento da heterogeneidade dos dispositivos móveis, a ausência de infraestrutura de comunicação fixa, o ambiente computacional dinâmico e o suporte à mobilidade do usuário. Este artigo apresenta o UFC-Inventor, uma ferramenta voltada para professores utilizarem os recursos dos dispositivos móveis e da Computação Ubíqua (como câmera, GPS, bússola e acelerômetro) em aulas de campo. O UFC-Inventor possibilita a geração automática de aplicações multiplataforma sem a necessidade de o usuário ter conhecimentos de programação. Além do desenvolvimento da ferramenta de autoria, outra contribuição importante desse trabalho foi a realização de testes de usabilidade com os públicos-alvo da abordagem. Primeiramente com os professores, observaram-se bons níveis de usabilidade e o interesse em usar o UFC-Inventor em suas aulas frequentemente. Posteriormente, uma aplicação ubíqua gerada pelo UFC-Inventor foi testada pelos estudantes em uma aula de campo de Geologia, sendo aprovada nos critérios de usabilidade e utilidade.
Mobile Cloud Computing joins two complementary paradigms by allowing the migration of tasks and d... more Mobile Cloud Computing joins two complementary paradigms by allowing the migration of tasks and data from resource-constrained devices into remote servers with higher processing capabilities in an approach known as offloading. An essential aspect of any offloading solution is the privacy support of the information transferred among mobile devices and remote servers. A common solution to address privacy issues in data transmission is the use of encryption. Nevertheless, encryption algorithms impose additional processing tasks that impact both on the offloading performance and the power consumption of mobile devices. This paper presents a study on the impact of using cryptographic algorithms in the CAOS offloading platform. Results from experiments show that the encryption time represents 2.17% to 5.35% of the total offloading time depending on the amount of offloaded data, encryption key size, and the place to run the offloaded task. Similar behavior occurred regarding energy consumption.
Resumo. Estudos têm mostrado os benefícios das mensagens de celular na educação. Pesquisadores ar... more Resumo. Estudos têm mostrado os benefícios das mensagens de celular na educação. Pesquisadores argumentam que estudos devem ser conduzidos para se avaliar a extensão dos benefícios e melhor identificar em quais contextos as mensagens móveis são aplicadas da melhor forma. Nesse sentido, esse artigo examinou a utilização das mensagens SMS em um curso a distância com 474 alunos. O principal objetivo foi descobrir se o uso desta tecnologia poderia melhorar a participação dos estudantes no curso. Os estudantes foram divididos em dois grupos e os resultados mostram que os alunos que receberam as mensagens móveis tiveram resultados significativamente superiores aqueles que não receberam, sendo quase 20% mais efetivos com relação ao cumprimento das atividades e até 78 horas mais rápidos para concluí-las. Palavras-chave: Mobile Learning, Mensagens de Celular e E-Learning. Analysis of the use of mobile messages in the improvement of the participation of students in distance courses: a case study Abstract. Studies have shown the benefits of mobile messages in education. Researchers argue that more studies must be conducted to assess the extension of these benefits, and to better identify in which context mobile messaging is the best approach to be applied. In this sense, our study examined a postgraduate class consisting of 474 learners in which Short Message Service was used. The main goal was to find out if this technology would improve student participation in the course. Two groups of learners were created and the results showed that students who received mobile messaging outperformed significantly students than did not receive. They were almost 20% more effective at completing their assigned activity and up to 78 hours faster than students from the control group.
Due to the large number of photos that are currently being generated, it is very important to hav... more Due to the large number of photos that are currently being generated, it is very important to have techniques to organize, search for, and retrieve such images. Photo annotation plays a key role in these mechanisms because it can link raw data (photos) to specific information that is essential for human beings to handle large amounts of content. However, the generation of photo annotation is still a difficult problem to solve as part of a well-known challenge called the semantic gap. In this paper, a literature review was conducted with the aim of investigating the most popular methods employed to produce photo annotations. Based on the papers surveyed, we identified that People (“Who?”), Location (“Where?”), and Event (“Where? When?”) are the most important features of photo annotation. We also established comparisons between similar photo annotation methods, highlighting key aspects of the most commonly used approaches. Moreover, we provide an overview of a general photo annotation process and present the main aspects of photo annotation representation comprising formats, context of usage, advantages and disadvantages. Finally, we discuss ways to improve photo annotation methods and present some future research guidelines.
Researchers have explored the effectiveness of combining active methodologies and gamification in... more Researchers have explored the effectiveness of combining active methodologies and gamification in the educational context for student interaction and motivation. Therefore, sharing experiences using these methodologies in various contexts is essential in identifying their benefits and challenges. This paper focuses on adopting Flipped Classroom methodology with gamification elements in teaching Software Process Quality, specifically MPS.BR. The experience involved 40 undergraduate students of Software Engineering and Computer Science at the Russas Campus of the Federal University of Ceará. Based on students' feedback, the gamified study scripts, point exchange systems, and quizzes provided positive experiences. However, students encountered difficulties using the adopted platform, which was a negative aspect of the experience. Resumo. O uso combinado de metodologias ativas e gamificação tem sido explorado no contexto educacional, por se mostrarem eficazes para a interação e motivação dos estudantes. Torna-se relevante compartilhar experiências com essas metodologias em diversos contextos, identificando seus benefícios e desafios. Este artigo descreve a adoção de Sala de Aula Invertida (SAI) combinada com elementos de gamificação no ensino de Qualidade de Processos de Software com foco no MPS.BR. A experiência envolveu 40 estudantes de graduação em Engenharia de Software e Ciência da Computação da Universidade Federal do Ceará-Campus de Russas. O feedback dos estudantes indicou que roteiros de estudo gamificados, o sistema de troca de pontos e quizzes proporcionaram boas experiências. Como pontos negativos, os estudantes indicaram dificuldades no uso da plataforma adotada.
Anais do ... Simpósio Brasileiro de Informática na Educação, Oct 26, 2015
Field trips are used by teachers as educational practices to motivate student learning. Research ... more Field trips are used by teachers as educational practices to motivate student learning. Research has been undertaken to expand the benefits provided by these activities through mobile and ubiquitous systems. An approach to the construction of this type of software is to use model-driven development through modeling languages. In the area of teaching and learning systems, the educational modeling language that stands out is IMS LD. However, this model has limitations when considering mobile and ubiquitous technologies applied in field trips. Thus, this paper proposes an extension to the IMS LD specification for mobile and ubiquitous systems applied to field trips. A scenario and an application that demonstrate how the extension works are also presented.
The Internet of Things (IoT) represents a new paradigm in the Internet history and in the way peo... more The Internet of Things (IoT) represents a new paradigm in the Internet history and in the way people interact with everyday objects. Academics and several industry segments have been working over the past years to make this vision possible. It is estimated that there will be dozens or hundreds of devices simultaneously connected to the user's network (e.g., in their home) in the next years, which can make the discovery and interaction with smart object more complicated to IoT users increasingly. This work proposes a smart objects discovery approach using image recognition, which aims to make this task quicker and more selective from an user perspective. An initial assessment has shown that the proposed mechanism can reduce the discovery time in a scenario with several devices, and additionally ensure a good level of user satisfaction.
Anais do ... Simpósio Brasileiro de Informática na Educação, Oct 26, 2015
Field classes favor an approach at the same time more complex and less abstract about the phenome... more Field classes favor an approach at the same time more complex and less abstract about the phenomena studied in different domains of knowledge. By adding mobile and ubiquitous technologies we obtain the Ubiquitous Field Classes, which have benefits when compared to traditional. This study presents a systematic mapping with 63 papers on the use of mobile and ubiquitous technologies in education, published between the years 2010 and 2014. Among the main results, we found that most applications is focused on the natural sciences in basic education, it uses the Android platform and is location-aware. From this survey, we identified a number of important requirements for ubiquitous field classes. For demonstration purposes, we present two applications that show the requirements identified.
Studies have shown the benefits of mobile messages in education. They assist to fix the classroom... more Studies have shown the benefits of mobile messages in education. They assist to fix the classroom lectures, help to remind study activities, and also allow the exchange of education messages among classmates. Researchers argue that more studies must be conducted to assess the extension of these benefits, and to better identify in which context mobile messaging is the best approach to be applied. In this sense, our study examined a postgraduate class consisting of 474 learners in which Short Message Service was used. The main goal was to find out if this technology would improve student participation in the course. Two groups of learners were created, control and experimental, in order to analyze the activities' fulfillment rate and the response time. The results from the data analysis showed that students who received mobile messaging outperformed significantly students from the control group. The experimental group had better results both in completion rate and response time. They were almost 20% more effective at completing their assigned activity and up to 78 hours faster than students from the control group. In addition, a questionnaire was implemented in order to evaluate participants' satisfaction with the use of SMS. Results found that most part of the students were satisfied and enjoyed the use of the mobile messages. CCS Concepts • Human-centered computing ➝ Ubiquitous and mobile computing ➝Empirical studies in ubiquitous and mobile computing.
Chemistry teaching presents many challenges. Most students consider it a complex and abstract sci... more Chemistry teaching presents many challenges. Most students consider it a complex and abstract science theme, making learning difficult. In the context of deaf students, these challenges are even more significant since most of the teaching methodologies focus on the hearing public. Games present themselves as promising tools to minimize these problems. The literature points out the existence of several digital games to teach Chemistry, however, there is still an inexpressive amount of games translated for the deaf. In this context, our study reports the development and evaluation of an adapted version of the game Interactions 500 to teach Organic Chemistry to deaf and hearing students. Resumo. O ensino de Química apresenta muitos desafios, poisé uma disciplina considerada pela maioria dos alunos como complexa e abstrata, dificultando sua aprendizagem. No contexto dos alunos surdos, os desafios são ainda maiores, visto que, na grande maioria, as metodologias de ensino aplicadas são pautadas no público ouvinte. Jogos educacionais se apresentam como ferramentas promissoras para minimizar tais problemáticas. A literatura aponta a existência de vários jogos digitais para ensinar Química, contudo, há uma quantidade ainda inexpressiva de jogos traduzidos para surdos. Neste contexto, este estudo apresenta o relato de desenvolvimento e avaliação de uma versão adaptada do jogo Interactions 500 no ensino de Química Orgânica para alunos surdos e ouvintes.
Considering the hype surrounding the Cyberpunk 2077 game, the theme of transhumanity has reappear... more Considering the hype surrounding the Cyberpunk 2077 game, the theme of transhumanity has reappeared in the news. This article aimed to analyze the theme of transhumanism in games. The relationship of the theme with the representative aspects of the design was verified. For this, we created a table of questions, as a proof of concept, with elements of the theory of narration by the environment, which allowed us to verify the quality and in the future a direct comparison between other digital games. The way these elements are ideologically described, reflected, and inserted helps to solidify the environmental narrative in the game environment. Cyberpunk 2077 introduced and adapted the ideology of transhumanity in its scenery. Some items have greater immersion than the others evaluated.
Development of Context-Aware and Mobile applications have significant challenges, such as the com... more Development of Context-Aware and Mobile applications have significant challenges, such as the complexity of sensor access code and the heterogeneity of devices. The Google Awareness API is an initiative to mitigate this complexity. This paper presents an analysis of GitHub projects involving Awareness API. However, the results showed that the spread of this API among the developers community is still incipient. We propose to extend a tool to allow high-level modeling of context acquisition and code generation compatible with Awareness API. It reduces the complexity of acquiring contextual information and managing contextual rules.
In 2020, the COVID-19 pandemic affected all sectors of society worldwide, including education. Du... more In 2020, the COVID-19 pandemic affected all sectors of society worldwide, including education. Due to the social isolation requirement, several educational institutions used the Emergency Remote Teaching (ERT) approach to keep their courses active, at least partially. This document provides an experience report about using ERT in two courses (Distributed Systems and Software Development for the Cloud) that deal with the Development of Distributed Software Systems. In these two courses, we used three main approaches: synchronous online classes, asynchronous learning videos, and online material available on a Git repository. In some classes, we also adopted active methodologies such as problem-based learning and flipped classroom. Students were evaluated by seminars, tests, and programming activities. In the end, we collected their feedback from an online survey. Forty-two (42) graduate and undergraduate students reported a good level of acceptance of our ERT model. Part of the students had difficulties in doing their programming homework, and the main obstacles reported by them were: (i) their psychological context and (ii) to reconcile the course activities with home tasks as well as the demands of their jobs. Once practical experiences in ERT will be essential for a while given the uncertainty about how long COVID-19 pandemic will remain active, we expect the highlights and drawbacks of our experience could help other professors in planning their courses.
ACM Transactions on Accessible Computing, Jun 30, 2020
BACKGROUND: Knowing their current position in the surroundings constitutes one of the biggest cha... more BACKGROUND: Knowing their current position in the surroundings constitutes one of the biggest challenges faced by people with visual disabilities when they move around. For them, it is difficult to be aware of the direction in which they are going, and the location of nearby objects and obstacles. In this context, obtaining relevant spatial information is always very significant to these individuals. Hence, the research in the development of assistive technologies for needs and perspectives of people who are blind has been a promising area in terms of the orientation and mobility (O&M) challenges. OBJECTIVE: The purpose of this study is to systematically examine the literature on &M virtual environments designed to support indoor navigation to identify techniques for both developing and evaluating the usability and cognitive impact of these applications. METHODS: A systematic literature review (SLR) was performed, considering population, intervention, outcomes, and study design as eligibility criteria. After a filtering process from 987 works retrieved from six databases, we extracted data from 51 papers, which meet the study selection criteria. RESULTS: The analysis of the 51 papers describing 31 O&M indoor virtual environments, indicated that O&M virtual environments to support indoor navigation are usually designed for desktop, adopt spatial audio as way to support orientation, and use joystick as primary interaction device. Regarding evaluation techniques, questionnaires, interviews, user observation, and performance logs are commonly used to evaluate usability in this context. In tests involving users, the participants are usually adults aged 21–59 years, who individually spend about 90 minutes split in usually two evaluation sessions. Most papers do not report any strategies to evaluate the cognitive impact of O&M virtual environments on users’ navigational and wayfinding skills. Thirteen papers (25.49%) reported the conduction of experiments or quasi-experiments and demonstrated pieces of evidence associated with a positive cognitive impact resultant from O&M indoor virtual environments usage. Finally, only four papers (7.84%) reported the development of indoor maps editors for O&M virtual environments. CONCLUSION: Our SLR summarizes the characteristics of 32 O&M virtual environments. It compiles state-of-the-art for indoor simulations in this domain and highlights their challenges and impacts in O&M training. Also, the absence of clear guidelines to design and evaluate O&M virtual environments and the few available computer editors of indoor maps appear as research opportunities.
Este artigo apresenta uma proposta de tese de doutorado que tem como objetivo principal introduzi... more Este artigo apresenta uma proposta de tese de doutorado que tem como objetivo principal introduzir Adaptive Testing (AT) em um sistema para a preparação de estudantes para o Enade. Esperamos que o desenvolvimento deste trabalho contribua para que estudantes possam se preparar melhor para o Enade e que as IESs possam diagnosticar de forma precoce o nível de conhecimento dos estudantes baseado nas competências adquiridas e assim definir estratégias de resgate de conteúdos. Dessa forma, os estudantes estarão melhor alinhados com o perfil do egresso esperado pelas Diretrizes Curriculares dos seus cursos.
Diversas metodologias ativas vem sendo estudadas e aplicadas no ensino de Engenharia de Software ... more Diversas metodologias ativas vem sendo estudadas e aplicadas no ensino de Engenharia de Software com o propósito de tornar as aulas mais dinâmicas e engajadoras. Neste artigo, é relatada uma experiência de ensino que combina a metodologia de Sala de Aula Invertida (SAI) com técnicas de Gamificação. A abordagem envolveu a preparação de roteiros de estudo com elementos de gamificação, atividades práticas gamificadas em sala de aula, um sistema de recompensas que permitia a troca de pontos por benefícios nas avaliações da disciplina e badges de personalidades importantes da área de estudo. O relato descreve uma experiência de aplicação da abordagem em uma turma de Engenharia de Requisitos do ensino superior com 41 estudantes após a retomada das atividades presenciais. A experiência compreendeu 6 aulas durante 3 semanas. A percepção dos estudantes foi positiva em relação aos roteiros de estudo, formato da aula e impacto na aprendizagem. Em relação ao aprendizado, observou-se um impacto positivo em três dos quatro conteúdos aplicados com um nível de significância de 95%, atingindo um ganho médio de até 32.1% na nota dos alunos comparando pós e pré-testes. CCS CONCEPTS • Social and professional topics → Computing education; • Software and its engineering → Requirements analysis.
Este trabalho apresenta um Mapeamento Sistemático da Literatura (MSL) que busca identificar e dis... more Este trabalho apresenta um Mapeamento Sistemático da Literatura (MSL) que busca identificar e discutir especificamente quais técnicas estão sendo usadas para analisar dados do Enade ou implementar ações diagnósticas para o acompanhamento das competências necessárias para o perfil do egresso que realiza tal exame. Dos 32 trabalhos incluídos nesta MSL, este artigo, em especial, analisa os 12 trabalhos que focam na análise do Enade de cursos de Computação. Foram encontrados trabalhos de cada uma das três abordagens, as quais são uso de machine learning (ML), uso de estatística e desenvolvimento de sistemas. Percebe-se que o principal foco dos trabalhos é analisar fatores que impactam nas notas dos alunos. A estatística descritiva foi a mais utilizada nos trabalhos. Em relação a ML as abordagens mais utilizada são a de classificação e agrupamento. Os sistemas encontrados se limitam a aplicação de provas e a análise desses resultados. Em apenas 01 deles, foi realizado uso de gamificação. CCS CONCEPTS • Social and professional topics → Computing education.
Brazilian Journal of Computers in Education, Dec 31, 2019
As aulas de campo promovem as habilidades dos estudantes ao incrementarem a capacidade de observa... more As aulas de campo promovem as habilidades dos estudantes ao incrementarem a capacidade de observação e descoberta em várias áreas do conhecimento. Ao inserir tecnologias ubíquas nas aulas de campo, como sensores e atuadores, estas aulas apresentam benefícios quando comparadas às aulas de campo tradicionais. Entretanto, no contexto destas aulas, o desenvolvimento de sistemas ubíquos impõe desafios como o tratamento da heterogeneidade dos dispositivos móveis, a ausência de infraestrutura de comunicação fixa, o ambiente computacional dinâmico e o suporte à mobilidade do usuário. Este artigo apresenta o UFC-Inventor, uma ferramenta voltada para professores utilizarem os recursos dos dispositivos móveis e da Computação Ubíqua (como câmera, GPS, bússola e acelerômetro) em aulas de campo. O UFC-Inventor possibilita a geração automática de aplicações multiplataforma sem a necessidade de o usuário ter conhecimentos de programação. Além do desenvolvimento da ferramenta de autoria, outra contribuição importante desse trabalho foi a realização de testes de usabilidade com os públicos-alvo da abordagem. Primeiramente com os professores, observaram-se bons níveis de usabilidade e o interesse em usar o UFC-Inventor em suas aulas frequentemente. Posteriormente, uma aplicação ubíqua gerada pelo UFC-Inventor foi testada pelos estudantes em uma aula de campo de Geologia, sendo aprovada nos critérios de usabilidade e utilidade.
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