Made available in DSpace on 2017-05-12T14:47:29Z (GMT). No. of bitstreams: 1 Alexandro_Pergher.pdf: 7344087 bytes, checksum: 0d48c994f72e53964a36a3d2e266dd5b (MD5) Previous issue date: 2015-06-09 / Information Systems can improve workflow, speed and security of processes. In the academic area, although new discoveries are always researchers purposes, some processes are established and are not submitted to severe changes throughout time. The data collection follows a given standard, where the collection points and variables are defined then the procedure is executed, recording variable values on each sample. Tools which automate this process are not popular. In cases concerning data where the occurrence place is crucial, the available systems are scarcer. This information is characterized as georeferenced structures, with known coordinates, in some reference system. So, new technologies of information and communication applied in this study resulted in a software that share and present accordingly the field research data, in order to help the Topography and Geoprocessing Lab (GeoLab) researchers of Western Paraná State University, campus, Cascavel, in their agricultural activities. The research of Topography and Geoprocessing Lab has improved the agriculture on Western Paraná. In order to contribute for new progresses in this field, that has Brazilian GDP relevance, some interviews with researchers of GeoLab was done. Thus, aiming at contributing with more relevant breakthroughs for Brazilian GDP and for this area, interviews were conducted with researchers at the lab, examining documents and spreadsheets used for data collection, and a flexible data model was created to meet the numerical data, alphanumeric, temporal, spatial and logical storage. Thus, during the solution development, Java 8 platform, PostgreSQL 9.4 relational database, PostGIS 2.1 extension, and some UML artifacts for documentation were used as well as some UML artifacts for documentation. / Sistemas de informação podem auxiliar na melhoria do fluxo, velocidade e segurança de processos. No meio acadêmico, embora buscam-se sempre novas descobertas, alguns processos são estabelecidos e não sofrem severas mudanças durante o tempo. A coleta de dados para pesquisas segue determinado padrão, onde são estabelecidos os pontos de coleta, as variáveis, e procede-se a coleta com a anotação dos valores das variáveis em cada uma das amostras. Ferramentas que automatizam tal processo não são populares. Ainda, quando se tratam de dados onde o local de ocorrência é informação determinante, os sistemas disponíveis são mais escassos. Esse tipo de informação caracteriza-se por ser georreferenciada, com coordenadas conhecidas, em um sistema de referência. Portanto, as tecnologias de informação e comunicação usadas nesse estudo resultaram em um software que permite o compartilhamento e a apresentação dos dados das pesquisas de campo, com o intuito de auxiliar os pesquisadores do Laboratório de Geoprocessamento da Universidade Estadual do Oeste do Paraná, campus Cascavel no desempenho das atividades em coletas de dados agrícolas. As pesquisas do Laboratório de Topografia e Geoprocessamento auxiliam a evolução da agricultura na região Oeste do Paraná. Assim, com o intuito de contribuir com mais avanços relevantes para o PIB brasileiro e para essa área, foram realizadas entrevistas com os pesquisadores do laboratório, análise de documentos e planilhas utilizadas na coleta de dados, criação de um modelo de dados flexível que atenda ao armazenamento de dados numéricos, alfanuméricos, temporais, lógicos e espaciais. No desenvolvimento da aplicação, foram utilizados a linguagem de programação Java 8, o banco de dados relacional PostgreSQL 9.4 e sua extensão PostGIS 2.1 bem como alguns artefatos da UML para documentação

Dispositivos móveis do tipo smartphones e tablets possibilitam uma interação rica e intuitiva, abrindo novas possibilidades para usuários e desenvolvedores. Entre as características que os tornam populares estão a alta capacidade de processamento, a melhoria constante das alternativas de interação com usuários e a possibilidade de captura de imagens e vídeos, além da comodidade de acessar serviços e informações em dispositivos tão portáteis. Além disso, ao longo dos últimos anos tem-se observado uma cultura de geração de conteúdo por parte de usuários, ao mesmo tempo que dispositivos móveis se tornam populares reprodutores de mídias e adquirem um papel importante na produção de conteúdo multimídia. Da mesma forma que novas mídias podem ser capturadas é também possível enriquece-las com anotações. Anotações são comuns em documentos textuais e recentemente tornaram-se populares em imagens, sendo possível encontrar diversos aplicativos para anotação em dispositivos móveis. No entanto, aplicativos para anotação em vídeo em dispositivos móveis ainda são raros. Explorando esta oportunidade, o principal objetivo deste trabalho foi investigar alternativas de interação entre usuários e seus dispositivos móveis considerando o cenário de anotação em vídeos. Para investigar os problemas relacionados foi desenvolvido um aplicativo executável em tablets e smartphones com soluções singulares para o contexto proposto. Com foco na interação humano-computador foram realizadas três avaliações, sendo uma avaliação de usabilidade com usuários, uma avaliação heurística com especialistas e uma avaliação colaborativa com uma usuária da área de terapia ocupacional. Resultados de avaliações auxiliaram na definição de novos requisitos e na identificação de problemas que se aplicam não apenas ao contexto de anotações em vídeo, mas em aplicações para dispositivos móveis, de forma geral. Assim, as principais contribuições deste trabalho consistem em soluções relacionadas à autoria multimídia, à captura de interações para sistemas de anotação em vídeo em dispositivos móveis e à usabilidade para aplicativos. / Mobile devices like smartphones and tablets enable rich and intuitive interactions, which brings new possibilities for users and developers. The high processing power, the constant improvement of user interaction, the ability to capture pictures and videos and the convenient way of accessing information and services are among the features that make them so popular. Over the past years we have been observing a growing in user generated content. In this context, modern mobile devices not only became popular media players, but also play an important role on multimedia content production. Furthermore, it is possible both to create new media and to enrich them with annotations. Annotations are usual in textual documents and recently became popular in pictures. Although applications for annotations are widely available for mobile devices, applications for mobile video annotation are still rare. The main objective of this research was to investigate interaction alternatives between users and their mobile devices considering the video annotation scenario. To investigate related problems, we have developed an application for tablets and smartphones with unique solutions for the proposed topic. With focus on human-computer interaction we conducted three evaluations: a usability evaluation with users, a heuristic evaluation with computer specialists and a collaborative assessment with a specialist in occupational therapy in the role of a user. Evaluation results helped to define new requirements and to identify issues that are not only applied in the video annotation context, but also in mobile applications in general. Thus, the main contributions of this study are solutions related to multimedia authoring, capture of interactions for video annotation on mobile devices and usability of applications.

Parents in the 21st century are concerned with the ubiquity of mobile devices and their effects on the progression of social development. A review of the literature indicated that although digital interaction has become more prominent, limited empirical data existed on whether children who spend more time interacting in the digital realm would develop the necessary competency to handle social situations in real-life settings. Using social constructivist theory and the Schramm model of communication as the theoretical foundations, the present study examined the relationship between mobile device usage and the level of social competency in young children as perceived by their parents, in relation to parental monitoring. A total of 401 parents of children age 5 to 12 years who have their own personal mobile devices completed the online questionnaires. Pearson correlation and linear regression showed that parental report of children's social competency was positively correlated to parental perception of mobile device usage and parental monitoring. Parental monitoring was also found to be a statistically significant moderator of the relationship between parental perception of mobile device usage and parental report of children's social competency. Positive social change of this study may include alleviating the misconception that digital interaction impeded social development, promoting parental role in raising socially competent children in the digital age, and advocating for a more collaborative parental monitoring strategy.

<p>The thesis presents findings from five readability studies performed on mobile devices. The dynamic Rapid Serial Visual Presentation (RSVP) format has been enhanced with regard to linguistic adaptation and segmentation as well as eye movement modeling. The novel formats have been evaluated against other common presentation formats including Paging, Scrolling, and Leading in latin-square balanced repeated-measurement studies with 12-16 subjects. Apart from monitoring Reading speed, Comprehension, and Task load (NASA-TLX), Eye movement tracking has been used to learn more about how the text presentation affects reading.</p><p>The Page format generally offered best readability. Reading on a mobile phone decreased reading speed by 10% compared to reading on a Personal Digital Assistant (PDA), an interesting finding given that the display area of the mobile phone was 50% smaller. Scrolling, the most commonly used presentation format on mobile devices today, proved inferior to both Paging and RSVP. Leading, the most widely known dynamic format, caused very unnatural eye movements for reading. This seems to have increased task load, but not affected reading speed to a similar extent. The RSVP format displaying one word at time was found to reduce eye movements significantly, but contrary to common claims, this resulted in decreased reading speed and increased task load. In the last study, Predictive Text Presentation (PTP) was introduced. The format is based on RSVP and combines linguistic chunking and adaptation with eye movement modeling to achieve a reading experience that can rival traditional text presentation.</p><p>It is explained why readability on mobile devices is important, how it may be evaluated in an efficient and yet reliable manner, and PTP is pinpointed as the format with greatest potential for improvement. The methodology used in the evaluations and the shortcomings of the studies are discussed. Finally, a hyper-graeco-latin-square experimental design is proposed for future evaluations.</p>

The thesis presents findings from five readability studies performed on mobile devices. The dynamic Rapid Serial Visual Presentation (RSVP) format has been enhanced with regard to linguistic adaptation and segmentation as well as eye movement modeling. The novel formats have been evaluated against other common presentation formats including Paging, Scrolling, and Leading in latin-square balanced repeated-measurement studies with 12-16 subjects. Apart from monitoring Reading speed, Comprehension, and Task load (NASA-TLX), Eye movement tracking has been used to learn more about how the text presentation affects reading. The Page format generally offered best readability. Reading on a mobile phone decreased reading speed by 10% compared to reading on a Personal Digital Assistant (PDA), an interesting finding given that the display area of the mobile phone was 50% smaller. Scrolling, the most commonly used presentation format on mobile devices today, proved inferior to both Paging and RSVP. Leading, the most widely known dynamic format, caused very unnatural eye movements for reading. This seems to have increased task load, but not affected reading speed to a similar extent. The RSVP format displaying one word at time was found to reduce eye movements significantly, but contrary to common claims, this resulted in decreased reading speed and increased task load. In the last study, Predictive Text Presentation (PTP) was introduced. The format is based on RSVP and combines linguistic chunking and adaptation with eye movement modeling to achieve a reading experience that can rival traditional text presentation. It is explained why readability on mobile devices is important, how it may be evaluated in an efficient and yet reliable manner, and PTP is pinpointed as the format with greatest potential for improvement. The methodology used in the evaluations and the shortcomings of the studies are discussed. Finally, a hyper-graeco-latin-square experimental design is proposed for future evaluations.

As the demand of indoor Location-Based Services (LBSs) increases, there is a growing interest in developing an accurate indoor positioning and tracking system on mobile devices. The core location determination problem can be reformulated as a sparse natured problem and thus can be solved by applying the Compressive Sensing (CS) theory. This thesis proposes a compact received signal strength (RSS) based real-time indoor positioning and tracking systems using CS theory that can be implemented on personal digital assistants (PDAs) and smartphones, which are both limited in processing power and memory compared to laptops. The proposed tracking system, together with a simple navigation module is implemented on Windows Mobile-operated smart devices and their performance in different experimental sites are evaluated. Experimental results show that the proposed system is a lightweight real-time algorithm that performs better than other traditional fingerprinting methods in terms of accuracy under constraints of limited processing and memory resources.

As the demand of indoor Location-Based Services (LBSs) increases, there is a growing interest in developing an accurate indoor positioning and tracking system on mobile devices. The core location determination problem can be reformulated as a sparse natured problem and thus can be solved by applying the Compressive Sensing (CS) theory. This thesis proposes a compact received signal strength (RSS) based real-time indoor positioning and tracking systems using CS theory that can be implemented on personal digital assistants (PDAs) and smartphones, which are both limited in processing power and memory compared to laptops. The proposed tracking system, together with a simple navigation module is implemented on Windows Mobile-operated smart devices and their performance in different experimental sites are evaluated. Experimental results show that the proposed system is a lightweight real-time algorithm that performs better than other traditional fingerprinting methods in terms of accuracy under constraints of limited processing and memory resources.

This paper examines the potential benefits of using augmented reality as a tool for visualizing furniture in a buyer’s own environment before buying it. A simple prototype is developed and tested.  The steps for developing the prototype are described in great detail as well as the tools being used. The prototype is tested both on people working in the furniture business as well as people with experience in buying furniture online. In conclusion the results from the user tests are analyzed and the potential benefits are described. In addition to analyzing the potential benefits of the tool this paper also describes how this tool should be designed to best fit the needs of the would-be users.

This bachelor thesis has been performed at Combitech, a technology, development and management consultancy company. The purpose of the thesis is to investigate the possibilities for multi-platform development of applications for mobile devices, as well as actually developing a simpler application using multi-platform development. The application is supposed to have functionality for sending an expression of interest for work and thesis work at Combitech, and should be available both as a native application for the Android and iOS operating systems as well as in the form of a web application. The thesis begins with an investigation of the possibilities for multi-platform development of applications for mobile devices. It is concluded that there is a wide range of available development frameworks that target several mobile platforms. It is decided that an HTML/CSS/JavaScript-based framework is most suited for the application to be developed. Therefore four HTML/CSS/JavaScript-based multi-platform development frameworks targetting mobile devices are analyzed more closely, namely jQuery Mobile, PhoneGap, Sencha Touch and Appcelerator Titanium. jQuery Mobile and PhoneGap are chosen to develop the application, and the thesis describes the development work as well as the resulting application. It is concluded that HTML/CSS/JavaScript-based frameworks can provide a nice touch screen optimized user interface that is consistent across platforms with e.g. jQuery Mobile, as well as access to native features and the possibility to package a web application as a native application with e.g. PhoneGap. It is also concluded that jQuery Mobile and PhoneGap can be used to create a modular application that, with well defined interfaces, can be run both as a web application and packaged as a native application on different mobile operating systems with no or minor changes to the code.

<p>This paper examines the potential benefits of using augmented reality as a tool for visualizing furniture in a buyer’s own environment before buying it. A simple prototype is developed and tested.  The steps for developing the prototype are described in great detail as well as the tools being used. The prototype is tested both on people working in the furniture business as well as people with experience in buying furniture online. In conclusion the results from the user tests are analyzed and the potential benefits are described. In addition to analyzing the potential benefits of the tool this paper also describes how this tool should be designed to best fit the needs of the would-be users.</p>