>Magister Scientiae - MSc / According to the WHO (2017), non-communicable diseases (NCDs) which include stroke, cancer, heart disease, chronic respiratory disease and diabetes is the leading cause of death and is responsible for seventy one percent of deaths worldwide. Beaglehole et al., (2009) reported that management of chronic diseases depends primarily on early detection of early disease, identification of high-risk status, interventions including pharmacological and psychosocial intercessions and long term follow up with monitoring and promotion of adherence to treatment.

The new changes in the Swedish curriculum for the educational system demand more digitalization in the kindergartens. However previous studies have shown that the current level of handling technology amongst preschool teachers in Swedish kindergarten is low and may create difficulties in their work. This thesis investigates a kindergarten that wants to implement a mobile app for more transparent and effective communication between preschool teachers and parents. The aims are to highlight the common perceptions and expectations from a parental point of view concerning a mobile app for communication while establishing if the preschool teachers experience technostress at their work. The data were gathered from conducting interviews and one online survey. The main finding of this study was that preschool teachers and parents should be more involved in the process of finding a suitable mobile app so they would be motivated to contribute to better daily communication. This study suggests that the most important strategies for implementing a mobile app for communication are to inform, educate and involve all the concerned parties.

Water scarcity is a growing problem on Earth. One of the goals in Agenda 2030, whichall of the UN members adapted is to make clean water accessible by everyone and ensuresustainable water withdrawals. In order to take a step towards the solution, a companynamed Quandify has developed smart water meters to measure households’ water consumptionwhich can be installed by anyone.In this bachelor’s thesis, the author collaborates with Quandify to develop a proofof concept (POC) to investigate if it was possible to create a mobile phone applicationthat could help residents reduce their water consumption. The author uses state of artsuggestions in persuasive technology literature and usability heuristics for user interactiondesign and implements it into the application to increase the chance of user behaviourchange towards water consumption.The result is a mobile phone application where the users get inspiration and tips onhow to reduce their water consumption and lets the users see their water consumptionin real-time. The report also includes a small POC user study to rate the mobile phoneapplication with respect to usability heuristics.

[pt] Nesta dissertação são investigadas situações em que se faz necessária a sobreposição de informações digitais ao ambiente físico em que o usuário está, uma condição proporcionada pela utilização do recurso da Realidade Aumentada (RA). São consideradas, na pesquisa, aplicações da tecnologia que empregam a técnica de Video See-Through (VST) para utilização em celulares. São apresentadas diferentes definições de RA, delimitando-se conceitos tangentes à tecnologia, tais como Realidade Virtual e Computação Ubíqua, para promover uma discussão acerca das definições levantadas. Em seguida, se apresentam algumas soluções, mais encontradas no mercado, de aplicativos de RA para celular, analisando-se os impactos da utilização de ferramentas específicas no seu processo de criação e desenvolvimento. Considerando-se ainda aspectos sociais e filosóficos inerentes à tecnologia, busca-se uma melhor compreensão dos conceitos-base de espaço, tempo e realidade a que a RA recorre para operar, a fim de subsidiar a discussão acerca da tecnologia e criar o embasamento teórico para as análises subsequentes. / [en] This dissertation investigates situations that require the overlay of digital information to the user environment, a condition provided by the use of Augmented Reality (AR) technology. In the research, there are considered applications of the technology that uses the Video See-Through (VST) technique on mobile phones. The dissertation presents different definitions of AR, delimiting tangent concepts such as Virtual Reality and Ubiquitous Computing, to arouse a discussion about the definitions. Then, it presents some of the mobile applications most used in the market, analyzing the impact on using some specific tools in its creation and development process. Considering further social and philosophical aspects inherent to the technology, it seeks to better understand the basic concepts of space, time and reality that the AR uses to operate, in order to support the discussion about the technology and to create the theoretical basis for subsequent analysis.

Body sensor networking is a rapidly growing technology. Today wearable sensors are used to measure and monitor e.g. pulse, temperature, skin conductance, heart activity, and movement (through GPS or inertial measurement units). Mobile phones can act as coordinating nodes in wireless personal area networks used in home automation, healthcare, sport and wellness e.g. to measure pulse and distance. Integration of data from multiple sources sensors (data fusion) means that data from each sensor node needs to be associated with data from other sensor nodes sampled at approximately the same time. Accurate methods for time synchronization are therefore a necessary prerequisite for reliable data fusion. This thesis studies time synchronization problems in Bluetooth piconets between multiple wireless sensor nodes connected to a mobile phone that acts as coordinating node. Three different algorithms to enable correct data fusion have been developed, implemented and evaluated. The first is a single clock solution that synchronizes multiple wireless sensor nodes based solely on the mobile phone’s clock. The other two algorithms synchronize the clocks in sensor nodes to the clock in the coordinating node. / <p>QC 20130605</p>