As novas dinâmicas de interação possiblitadas pela Web 2.0 reformulam a aprendizagem como atividade que se estende a diversas áreas ligadas ao saber. Aprender à luz das novas tecnologias exige estratégias que se adequem às possibilidades de interação com a informação, conforme particularidades das mídias em que elas se fazem disponíveis, as particularidades de aprendizagem de cada indivíduo e o contexto que determina necessidades de acesso. Educadores, designers instrucionais / educacionais e estrategistas de conteúdo revisam, invariavelmente, processos para melhor compreender os mecanismos pelos quais informação é transformada em conhecimento. Esses estão aptos a interpretar os métodos pelos quais indivíduos processam informação e apropriam conteúdos de origens variadas em uma prática que podemos chamar aprendizagem ou meaning making. Nesse contexto, surge o conceito de narrativas transmidiáticas, capaz de abarcar as práticas de aprendizagem que, multifacetadas, são possibilitadas pelos recursos midiáticos que compõem nosso cotidiano. A construção de significado se dá na medida em que construímos narrativas, linhas mestras coerentes que nos permitem interagir de forma eficiente com os diferentes conteúdos aos quais temos acessos. Esse trabalho investigou o conceito de narrativa e o impacto da utilização de mídias na forma de interagir com os outros e, também, com o conhecimento; a aprendizagem no contexto das narrativas transmidiáticas; dois exemplos concretos e distintos em que aprende-se através de narrativas construídas a partir do uso combinado de mídias. Por fim, buscou-se apontar novos caminhos a serem explorados por pesquisadores interessados na forma como aprendizagem e comunicação se dão em um contexto caracterizado pelas mídias digitais. / The new dynamics empowered by web 2.0 reframes learning as an activity that permeates different areas of knowledge. In the light of new technologies, the goal of reaching a certain knowledge demands adequate strategies. These must be appropriate to the various possibilities of interaction with information, according to media\'s affordances, individual\'s learning particularities and the context that determined individual necessities of access. Educators, educational / instructional designers and content strategists invariably revise procedures to better understand the mechanics through which information is turned into knowledge. These professionals are able to understand the methods through which individuals process information and appropriate content from different resources in a practice that we can call learning or meaning making. In this context, appears the term transmedia narratives: a concept that encompasses plural learning practices enabled by media resources that compose our reality. Meaning making happens as we build narratives, coherent guidelines that empower ourselves to interact efficiently with the different types of content we have access to. This study investigated the concept of narrative and the impact of media in our ways to interact with others and with knowledge; learning in the context of transmedia narratives; two concrete and distinct examples in which one learn through narratives built with the use of various combined media. Finally, this study aimed to indicate new research pathways to be explored by researchers interested in the way learning and communication happen in a context determined by the digital media.

Title: Multi-platform Multiplayer RPG Game A multi-platform game, which would be able to run on various devices with Windows 8.1 and Windows Phone 8.1 systems, was created in this work. It was supposed to be a universal game client executable on desktop PCs, notebooks, tablets or mobile phones. The game was supposed to be role-playing game (RPG) with focus on turn-based action combat. In this work, a 3D game engine was written which supports rendering simple scenes with objects and animated characters. The engine was developed using DirectX. The engine was written in .NET C# using SharpDX library. A cross-device communication framework based on bluetooth technology was implemented in this project as well. This communication framework allows two game clients running on two different devices to communicate with each other.

Digital activism means using information systems to pursue political issues. Previous research on digital activism tends to focus on one platform at a time, which has been criticized due to the silo-effect it can lead to. Despite the critique a lack of scientific studies have been identified regarding a multi-platform approach to digital activism. Therefore the purpose of this study was to examine how multiple platforms are used by a single social movement organization when engaging in digital activism. A qualitative study was conducted by gathering and analysing content published during the course of one month from the accounts belonging to Black Lives Matter Sweden on the social media platforms Facebook, Instagram and Twitter. The study applies a multi-platform perspective as well as a sociological framing theory to study how multiple platforms are used by examining how content is being presented across the different platforms.  The results of this study indicate the use of primary and secondary platforms where content is presented differently. Furthermore, the findings show that the secondary platform acts like a net, builds relationships as well as refers bystanders to the primary platform. Although digital activism does not necessarily require a lot of financial resources, the results of this study shows that there may be a greater need for resources in the form of manpower and time to conduct digital activism on multiple platforms simultaneously. / Digital aktivism innebär användandet av informationssystem för att driva politiska frågor. Tidigare studier av digital aktivism har fokuserat på en plattform i taget, något som har kritiserats för den silo-effekt det kan innebära. Trots detta finns en brist på forskning gällande hur en organisation använder multipla plattformar för att bedriva digital aktivism. Syftet med denna studie var därför att utöka förståelsen för hur multipla plattformar används av en organisation i arbetet med digital aktivism. En kvalitativ studie utfördes genom att samla in och analysera inlägg publicerade under en månads tid från konton tillhörande Black Lives Matter Sweden på de sociala medieplattformarna Facebook, Instagram och Twitter. Studien tillämpar ett multiplattformsperspektiv i kombination med ett framingramverk som teoretisk lins för att utvärdera hur multipla plattformar används genom att studera hur innehåll presenteras på de olika plattformarna.  Resultatet indikerade förekomsten av primära och sekundära plattformar som användes för att presentera och hantera ämnen på olika sätt. Vidare visar resultatet att den sekundära plattformen agerar fångstnät, bygger relationer och slussa åskådare vidare till den primära plattformen. Trots att digital aktivism inte nödvändigtvis kräver finansiella resurser så visar denna studie att det kan finnas ett större behov av resurser i form av arbetskraft och tid för att bedriva digital aktivism på multipla plattformar samtidigt.

I processi di digitalizzazione e convergenza hanno avuto un forte impatto sulle modalità di produzione, distribuzione e fruizione dei contenuti audiovisivi. Ma tale impatto non si è limitato ai suddetti ambiti. Fenomeni come il transmedia storytelling, le narrazioni distribuite, l’intertestualità, l’ibridazione delle forme discorsive, l’integrazione di elementi di game-playing all’interno di strutture narrative tradizionalmente lineari, e la crescente rilevanza del world-building all’interno del processo creativo di una storia dimostrano che il cambio di paradigma non sta avvenendo solo a livello delle strutture economiche, produttive e comunicative, ma anche a livello narratologico. Scopo di questa ricerca è mappare tale cambio di paradigma, approfondendo in modo particolare l’emergere delle forme narrative transmediali. / The processes of digitalization and media convergence have had a major impact on the procedures of production, distribution and reception of audiovisual content. However, the impact has not been limited to those areas. The emergence of cultural phenomena such as transmedia storytelling, distributed narratives, intertextuality, the hybridization of forms of discourse, the integration of elements of game-playing within the traditionally linear narrative structures, and the growing importance of world-building within the story development process attest that the paradigm shift is not only occurring at an economical, industrial and communicational level, but also at a narratological one. The aim of this research is to map this paradigm shift, with particular focus on the emergence of transmedia narrative forms.

The aim of this master thesis is to analyse, design and implement a multi-platform mobile application for alternative and augmentative communication of people with special education needs and disabilities. This application based on iOS and Android platform allows making sentences composed of pictograms with voice output. The application is implemented in Java & HTML5 based multi-platform framework Oracle ADF Mobile. Application has been verified by case study in native environment of people with intellectual disability. The main contribution of this thesis is to include and verify the requirements of computer therapy (in sense computer as therapy), which aim to provide solution for proper design a usability of implementation for described target group of people.

Dans un contexte de changement climatique, la compréhension du régime thermique des cours d’eau est un enjeu important. En mesurant le rayonnement dans le spectre électromagnétique de l’infrarouge thermique (IRT : 0,4-14µm), la télédétection IRT offre la possibilité d’obtenir une cartographie de la température de surface à différentes échelles spatiales. L’approche multi-échelle est ainsi le fil directeur de ce travail.Dans le premier temps, nous utilisons des images satellites Landsat ETM+ pour caractériser les structures thermiques longitudinales et temporelles d’un grand continuum fluvial : le Rhône français (500 km). Une méthode automatique supprimant les pixels contaminés par les entités exondées, est développée, améliorant ainsi la précision des données. Les images nous permettent de comprendre les effets thermiques des affluents et des centrales nucléaires. L’Isère est la principale source d’eau froide, alors que les centrales nucléaires du Bugey, de Saint-Alban et de Tricastin réchauffent le fleuve. Nous mettons en évidence des anomalies thermiques au niveau des aménagements hydroélectriques. Par rapport aux canaux, les Rhône court-circuités (RCC) sont plus sensibles aux conditions extérieures du fait de leur géométrie et de leurs conditions hydrauliques.Dans un second temps, les travaux se focalisent sur un tronçon plus court (50 km) : l’Ain dans sa basse vallée où quatre campagnes IRT aéroportées sont réalisées. Nous développons une méthode statistique permettant de calculer l’incertitude de mesure associée à la construction des profils longitudinaux de température de l’eau. Les artefacts des vraies tendances longitudinales sont ainsi différenciés. Pour comprendre ces tendances, un modèle 1D (thermo-hydraulique) est mis en place sur 21 kilomètres. Il considère les flux de chaleur à l’interface eau-air et les propriétés géométriques ainsi qu’hydrauliques de la rivière. Les arrivées phréatiques associées aux bras morts et aux suintements latéraux sont identifiées sur les images thermiques et intégrées au modèle. Ces arrivées phréatiques peuvent refroidir l’Ain de 0,6°C en été lorsqu’elles représentent 15,7% du débit total.Une échelle plus fine est explorée enfin. Le travail porte cette fois sur neuf tronçons en tresses (1 km) pour lesquels des images IRT à très haute résolution spatiale sont acquises. En caractérisant les distributions spatiales de la température, nous identifions deux types de tronçons. Le premier montre une très faible variabilité thermique spatiale tout au long de la journée. Les cours d’eau de ce type ont bien souvent un régime hydrologique proglaciaire avec des débits estivaux élevés, ce qui tend à homogénéiser la température. Le second type présente une hétérogénéité thermique élevée. La température des chenaux courants varie avec la température de l'air. En revanche, la température des chenaux alimentés par des eaux souterraines est relativement constante au cours de la journée. Nous proposons une méthode ne nécessitant pas d’images IRT pour identifier les tronçons montrant une variabilité thermique élevée.À travers ce travail, nous montrons qu’il est nécessaire de coupler les approches spatiales et temporelles pour comprendre la température des cours d’eau. Longtemps, les mesures ont été effectuées avec des thermomètres. L’aspect spatial a ainsi souvent été ignoré. La télédétection IRT a permit de mieux appréhender les structures spatiales de température. Toutefois, pour comprendre ces dernières il est indispensable de considérer les changements temporels de température. Il est également nécessaire d’intégrer une approche plus physique permettant de simuler différentes situations pour évaluer l’importance des différents facteurs affectant la température. / In a context of global warming, understanding the thermal regime of rivers is a key issue. By measuring the radiation in the electromagnetic spectrum of thermal infrared (TIR: 0.4-14µm), TIR remote sensing offers the possibility of obtaining surface temperature maps at multiple scales. The multi-scale approach is thus the guiding principle of this work.First we use satellite thermal infrared images from Landsat ETM+ to investigate longitudinal and temporal variations in the thermal patterns of a large river continuum, the French Rhône (500 km). An automated water extraction technique is developed to remove pixels contaminated by terrestrial surfaces. This method improves the accuracy of our data. The images allow us to understand the thermal effects of tributaries and nuclear power plants: the Isère is the main source of cold water while the Bugey, Saint-Alban and Tricastin nuclear power plants warm the river. We show temperature differences within the largest hydroelectric bypass facilities between the bypass section and the canal. The factors responsible for these differences are the length and minimum flow of the bypass section as well as tributaries coming into this reach.Second, we focus on a shorter river (50 km): the lower Ain in France where four airborne TIR surveys are performed. Based on a statistical analysis of temperature differences between overlapping images we calculate the measurement uncertainty associated with TIR derived profiles. This uncertainty allows for the discrimination between artifacts and real longitudinal thermal trends. To understand these trends, we use a 1D determinist model which predicts water temperature at an hourly time step along a 21 km reach. The model considers heat fluxes at the water-air interface as well as the geometrical and hydraulic characteristics of the river. Based on TIR images, groundwater inputs associated with backwaters and lateral seepages are identified. They are inserted into the temperature model. These groundwater inputs can mitigate high water temperatures during the summer by cooling the river up to -0.6°C when they represent 15.7% of the total discharge.A finer scale is finally explored. The work focuses on nine braided reaches located in the French Alps (1 km) where very high spatial resolution TIR images are acquired. By characterizing the spatial distributions of water temperature, we identify two types of reaches. The first type shows a very low thermal spatial variability throughout the day. Rivers of this type often have a proglacial hydrological regime with high summer flows, which tends to homogenize the temperature. The second type exhibits a higher thermal variability with changes during the day. The temperature of flowing channels changes during the daytime according to the air temperature. In contrast, the temperature of groundwater-fed channels exhibits smaller changes which creates thermal variability over space and time. We propose a method which does not require TIR images in order to identify reaches showing high thermal variability.Through this work, we show that it is essential to combine both spatial and temporal approaches to understand river temperature. Thermometers have been used for many years. Thus, the spatial aspect has often been ignored. TIR remote sensing has allowed a better characterization of spatial thermal patterns. However, to understand these patters it is necessary to consider temporal changes of water temperature. It is also necessary to integrate a more physical approach in order to simulate different scenarios and to assess the importance of the different factors affecting water temperature.

This master thesis deals with issues of development of applications for augmentative and alternative communication (AAC) in environment of special education for mentally challenged pupils with communication disorders. Thesis presents issues of development contemporary applications and follows on design principles of Computer therapy project, which compliance during the design and implementation should prevent the current issues. The aim of the thesis is creation of application for AAC of YES/NO type and i-CT framework - framework simplifying creation of similar apps for described environment. Both apps works on iOS and Android systems and were tested in an environment of people with mental disabilities.