Com o crescente aumento do número de dispositivos móveis no mercado, surge a possibilidade dos usuários carregarem consigo diversos livros em formato digital. Estes livros, originalmente desenvolvidos para outros formatos, apresentam vícios, e em alguns casos falhas, que prejudicam e confundem o usuário. Por este motivo surgem os livros digitais interativos, que nada mais são do que livros projetados especificamente para estes dispositivos móveis. Mas junto com estes produtos surgem dúvidas a respeito de quais embasamentos devem ser utilizados. Neste contexto, a presente pesquisa analisa se os conhecimentos relacionados a experiência do usuário, ao design de interação, ao design de informação, e ao design de interface, vinculados as bases teóricas utilizadas para o desenvolvimento de livros impressos, jornais/revistas digitais e aplicativos, podem orientar o processo de projeto e desenvolvimento de livros digitais interativos. O resultado desta analise permite realizar um levantamento, e consequentemente criar um guia de diretrizes que servirá como embasamento para o futuros desenvolvimento de livros digitais interativos. / The increasing number of mobile devices on the market, arises the possibility for users to carry several books in a digital format. These books, originally developed for other formats, have addictions, and in some cases failures, that hinder and confuse the user. In this scenario arise the interactive digital books, which are nothing more than books designed specifically for these mobile devices. But along with these products new doubts show up. In this context, the present study examines whether the knowledge related to the user experience, the interaction design, the information design, and interface design, tied the theoretical bases used for the development of printed books, newspapers / magazines and digital applications can guide the process of design and development of interactive digital books. The result of this analysis allows to conduct this work, and thus create guidelines that will serve as basis for the future development of interactive digital books.

Com o crescente aumento do número de dispositivos móveis no mercado, surge a possibilidade dos usuários carregarem consigo diversos livros em formato digital. Estes livros, originalmente desenvolvidos para outros formatos, apresentam vícios, e em alguns casos falhas, que prejudicam e confundem o usuário. Por este motivo surgem os livros digitais interativos, que nada mais são do que livros projetados especificamente para estes dispositivos móveis. Mas junto com estes produtos surgem dúvidas a respeito de quais embasamentos devem ser utilizados. Neste contexto, a presente pesquisa analisa se os conhecimentos relacionados a experiência do usuário, ao design de interação, ao design de informação, e ao design de interface, vinculados as bases teóricas utilizadas para o desenvolvimento de livros impressos, jornais/revistas digitais e aplicativos, podem orientar o processo de projeto e desenvolvimento de livros digitais interativos. O resultado desta analise permite realizar um levantamento, e consequentemente criar um guia de diretrizes que servirá como embasamento para o futuros desenvolvimento de livros digitais interativos. / The increasing number of mobile devices on the market, arises the possibility for users to carry several books in a digital format. These books, originally developed for other formats, have addictions, and in some cases failures, that hinder and confuse the user. In this scenario arise the interactive digital books, which are nothing more than books designed specifically for these mobile devices. But along with these products new doubts show up. In this context, the present study examines whether the knowledge related to the user experience, the interaction design, the information design, and interface design, tied the theoretical bases used for the development of printed books, newspapers / magazines and digital applications can guide the process of design and development of interactive digital books. The result of this analysis allows to conduct this work, and thus create guidelines that will serve as basis for the future development of interactive digital books.

Com o crescente aumento do número de dispositivos móveis no mercado, surge a possibilidade dos usuários carregarem consigo diversos livros em formato digital. Estes livros, originalmente desenvolvidos para outros formatos, apresentam vícios, e em alguns casos falhas, que prejudicam e confundem o usuário. Por este motivo surgem os livros digitais interativos, que nada mais são do que livros projetados especificamente para estes dispositivos móveis. Mas junto com estes produtos surgem dúvidas a respeito de quais embasamentos devem ser utilizados. Neste contexto, a presente pesquisa analisa se os conhecimentos relacionados a experiência do usuário, ao design de interação, ao design de informação, e ao design de interface, vinculados as bases teóricas utilizadas para o desenvolvimento de livros impressos, jornais/revistas digitais e aplicativos, podem orientar o processo de projeto e desenvolvimento de livros digitais interativos. O resultado desta analise permite realizar um levantamento, e consequentemente criar um guia de diretrizes que servirá como embasamento para o futuros desenvolvimento de livros digitais interativos. / The increasing number of mobile devices on the market, arises the possibility for users to carry several books in a digital format. These books, originally developed for other formats, have addictions, and in some cases failures, that hinder and confuse the user. In this scenario arise the interactive digital books, which are nothing more than books designed specifically for these mobile devices. But along with these products new doubts show up. In this context, the present study examines whether the knowledge related to the user experience, the interaction design, the information design, and interface design, tied the theoretical bases used for the development of printed books, newspapers / magazines and digital applications can guide the process of design and development of interactive digital books. The result of this analysis allows to conduct this work, and thus create guidelines that will serve as basis for the future development of interactive digital books.

During the past few years the use of mobile devices became extremely popular not only for personal use but also for working. When personal mobile devices are used as working assets the enterprises should search for some suitable ways to protect their data and network from the unmanaged mobile devices. On the other hand, it is widely believed that employees are more productive when they work from their own devices. This arise three questions: what risks these devices are bringing to the organizations, how to protect the company data and network while allowing the employees to work from their devices, and how adapted the real world is to the Bring Your Own Device trend. To answer these questions and the sub-questions deriving from them, an extensive literature study and a survey approach are used. The results from the study show that even though there are many risks for the companies, brought by the use of personal mobile devices, there exist adequate solutions to mitigate these risks. However, the results from the survey approach show that the companies are not very adapted to this trend yet and there exist a need for better understanding of the problem.

As information technology pervades our lives we have increasingly come to rely on these evermore sophisticated and ubiquitous items of equipment. Portability and the desire to be connected around the clock has driven the rapid growth in adoption of mobile devices that enable us to talk, message, tweet and inform at will, whilst providing a means to shop and administer bank accounts. These high value, high risk, desirable devices are increasingly the target of theft and improvement in their protection is actively sought by Governments and security agencies. Although forms of security are in place they are compromised by human reluctance and inability to administer them effectively. With typical users operating across multiple devices, including traditional desktop PCs, laptops, tablets and smartphones, they can regularly find themselves having a variety of devices open concurrently. Even if the most basic security is in place, there is a resultant need to repeatedly authenticate, representing a potential source of hindrance and frustration. This thesis explores the need for a novel approach to user authentication, which will reduce the authentication burden whilst providing a secure yet adaptive security mechanism; a so called Authentication Aura. It proposes that the latent security potential contained in surrounding devices and possessions in everyday life can be leveraged to augment security, and provides a framework for a distributed and cooperative approach. An experiment was performed to ascertain the technological infrastructure, devices and inert objects that surround individuals throughout the day. Using twenty volunteers, over a fourteen-day period a dataset of 1.57 million recorded observations was gathered, which confirmed that between 6am and 12pm a significant device or possession is in near proximity 97.84% of the time. Using the data provided by the experiment as the basis for a simulation of the framework, it suggests a reduction of up to 80.36% in the daily number of required authentications for a user operating a device once every 30 minutes, with a 10 minute screen lock in place. Examining the influence of location alone indicated a reduction of 50.74% in user interventions lowering the average from 32 to 15.76, the addition of the surroundings reducing this further to 13.00. The analysis also investigated how a user’s own authentication status could be used to negate the need to repeatedly manually authenticate and it was found that it delayed the process for up to 90 minutes for an individual user. Ultimately, it confirms that during device activation it is possible to remove the need to authenticate with the Authentication Aura providing sufficient assurance.

The aim of this thesis is design and implementation of Android application which will serve as real-time translator from one language to another, including several world languages and Czech. The text obtained from image is translated and replaces the original one with keeping its visual look as much as possible. The reader gradually gets familiar with getting text from images, text translation, displaying text on mobile device and Android OS implementation. In conclusion, the experiments with multiple input images and comparison of existings applications have been done.

Recently, wireless sensor networks (WSNs), consisted of battery-powered sensor nodes, are widely adopted by various civilian/military applications for implementing real-time monitoring or long-term surveillance tasks. One of the critical issues of WSNs is energy efficiency. Due to the limited battery capacity, the network lifetime and performance of WSNs are constrained. Also, once the sensor is deployed into a risky/remote environment, the replacement of its battery is hard. Therefore, how to improve the energy efficiency of the WSN is a critical issue and has gained tremendous attention from researchers around the world. To address this problem, by taking advantage of the emerging high-mobility devices (e.g., unmanned aerial vehicle (UAV)), we propose energy-efficient mobile device-assisted schemes in different-scale WSNs. Thanks to the rapid development of wireless techniques, two emerging approaches, i.e., data gathering technique and wireless charging technique, are beneficial to balance the workloads among all sensors or replenish energy to achieve the semi-permanent WSN. First, we design data gathering schemes using the mobile data collector. In order to meet the performance requirements of systems with different scales, our algorithms have two working modes: single- and multiple-data-collector scenarios. For the small-scale system, a single data collector is adopted to access and collect data from the deployed node, and we propose single mobile data collector-assisted (SDCA) data collection schemes for small-scale WSNs. For the large-scale system, multiple data collectors are utilized to gather sensed data from deployed nodes, and two-mode multiple mobile data collector-assisted (MDCA) data collection scheme is designed for balancing between the system energy consumption and the data forwarding latency. Second, the joint data collection and energy charging scheme is developed by adopting mobile chargers (MCs) as mobile devices that are responsible for energy charging and data collection simultaneously. For facing the different performance requirements of systems, a two-mode MC scheduling algorithm is presented. To evaluate our works, extensive simulation experiments are conducted on the OMNeT++ simulator. The results demonstrate that the proposed algorithms achieve better performance than the control group regarding system-wide energy efficiency, network lifetime and average end-to-end delay.

<p>QC 20131118</p>

While the introduction of the Internet facilitated the communication channels at the workplace to improve employees’ productivity, it also raised new challenges, such as Internet use for personal activities. Organizations face productivity losses due to employees’ involvement in counterproductive behaviors, such as cyberslacking. The frequency of mobile device cyberslacking is anticipated to increase due to continuous developments in online connectivity, applications, and the significant growth of mobile device usage worldwide. In addition, research has shown that employees’ commitment to their organization can encourage behaviors that positively influence productivity. Employee’s commitment is a crucial factor because it can benefit an organization in different ways, such as enhancing performance, decreasing absenteeism, and reducing turnover, thus, resulting in sustained productivity. Hence, limited studies have been conducted on the impact of employee cyberslacking using mobile devices and employee’s commitment to the organization on productivity. The research problem that this research study addressed is mobile device cyberslacking at the workplace as it relates to productivity. The main goal of this research study was to develop and validate, using Subject Matter Experts (SMEs), a Mobile Cyberslacking- Commitment Taxonomy using the measures of mobile device cyberslacking based on the self-reported frequency of cyberslacking (FCyS) and employee’s commitment to the organization (EC2O) to provide indirect indication for employee productivity. This research study implemented three phases. Phase One of this study, using the Delphi method, collected data via anonymous online surveys from 19 SMEs to evaluate and validate a set of items relevant to the measures of mobile device FCyS and EC2O, the survey scale, instructions to participants, and the Mobile Cyberslacking-Commitment Taxonomy. In Phase two, using a pilot study, a group of 35 participants were recruited to verify the validity of the survey instrument that was revised by SMEs. In Phase three, the validated survey was sent via email to assess six research questions. The final survey was sent to 1,063 employees who work at organizations in Saudi Arabia and use mobile device on a daily basis. The response rate was 24.93% with 265 usable records. The results of the study showed that employees were dispersed across the Mobile Cyberslacking-Commitment Taxonomy with 4.5% of the employees were positioned in the more problematic quadrant indicating that this portion of employees will not use their mobile devices at the workplace to improve their productivity. The overall results showed that the population had a low frequency of mobile cyberslacking and a high commitment to the organization, thus, have a better potential for productivity. Significant differences in the two constructs were also found across several demographics including age, gender, education level, industry type. Recommendations for practice and research are provided. Moreover, several areas for future research are also presented. The results of this research study contributed to information systems’ body of knowledge by providing researchers and practitioners a novel benchmarking tool of Mobile Cyberslacking-Commitment Taxonomy to enable the measure of employees’ FCyS and EC2O to classify employees’ potential for productivity in the context of the workplace.

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