yes / The delivery of higher education, as with many aspects of society in general, is becoming increasingly shaped by the availability of the Internet in our everyday lives. Associated with the growth in Internet availability, web 2.0 technologies have become increasingly popular over recent years, especially with the `Google Generation¿, a term used to describe those brought up with the Internet. The exploitation of such tools has led to the widespread take-up of social networking sites, the growth in blogging and twitter, and the adoption of wikis and social media sites for the sharing and publishing of content. The opportunities introduced by technology enhanced learning (TEL), and in particular web 2.0 tools and applications, are now starting to attract significant interest from within the academic community. The lecture begins by describing the advances in digital communication technologies that are allowing new approaches to teaching and learning to be investigated. A review of how technology is currently employed in higher education then follows, before proceeding to outline the latest developments associated with web 2.0 tools and applications and the opportunities these present. A review of significant findings from within the academic research community is then given. To conclude, an assessment of what are the likely drivers that are creating a need for change within the higher education sector is presented before outlining the implications of introducing TEL from the perspectives of both students and teaching staff.

This thesis investigates the implementation and performance of Shuffled Faster than Nyquist (SFTN) signaling, a communication method that enhances spectral efficiency and provides physical layer security (PLS) in wireless communications. In Faster than Nyquist signaling, the Nyquist inter-symbol interference (ISI) criterion is exceeded, thereby increasing spectral efficiency. By varying the transmission rate of symbols above the Nyquist rate, SFTN signaling is able to obfuscate the timing of transmitted symbols with ISI. The work in this thesis evaluates the performance of SFTN in Additive White Gaussian Noise (AWGN) channels and the MATLAB 802.11ax fading channels. Results show that while SFTN signaling offers the ability to introduce PLS, the sensitivity of the waveform is significantly influenced by the choice of symbol transmission rates and channel conditions.

While knowledge is one of an organization’s greatest assets, it remains a challenge to facilitate knowledge transfer between people within an organization. Social influence has been studied in its role of facilitating information diffusion, which is necessary for knowledge transfer to occur. Among this research, tie strength, a quantifiable characteristic of a social network that determines the link between two nodes, has been measured to determine the impact of social influence on knowledge transfer and information dissemination within a social network. Current research that explores the impact of social influence on information diffusion has been conducted within public social networks due to the availability of data that can be gathered from public social online network systems, such as Facebook. With the emergence of collaboration technologies that exist in online social network tools being utilized within organizations, there is an opportunity to digitally collect information regarding information dissemination within a collaborative network. This study captured data from an online social network, specifically a unified communication tool, being used within a collaborative social network at a mid-sized South Central corporation. A content analysis of Lync messages for 1,749 connections was performed to quantitatively measure the influence of tie strength on information dissemination within a collaborative social network. The results demonstrated that tie strength had a significant impact on information dissemination using a collaborative system. Multivariate analysis of variance showed that tie strength had the largest impact on information dissemination using the instant messaging modality of a collaboration system.

Digitalisering har med tiden fått en allt större betydelse och vikten av att företag utvecklas i takt med dess framväxt förväntas öka. En anledning till det är globaliseringen som bland annat medfört en ökad konkurrens. För att bibehålla alternativt förbättra konkurrenskraften bör företag ha en tydlig strategi för hur resurser gällande digitala satsningar ska avsätts. Ytterligare en viktig aspekt för att överleva på marknaden är företagets förmåga att hantera inköp samt ha nära och långsiktiga leverantörsrelationer. För att åstadkomma det behövs en god kommunikation där information snabbt och enkelt kan delas. Företag har generellt svårt att utvecklas i takt med digitaliseringens framfart på grund av att de prioriterar sina resurser till annat. Studien syftar därmed till att besvara följande frågeställning: ”Hur kan ett företag prioritera sina resurser för uppströms digitalisering?”. För att besvara ovanstående frågeställning genomfördes en fallstudie på Axis Communications AB. Syftet med studien är att effektivisera och förenkla kommunikationen gällande uppströms digitalisering genom att hjälpa Axis att prioritera sina resurser. För att åstadkomma det kommer Axis nuvarande kommunikationsflöde med deras leverantörer att undersökas. För att få en trovärdig bild av hur kommunikationen ser ut i dagsläget genomfördes flera intervjuer med anställda på Axis och en enkätundersökning distribuerades till leverantörerna. För att få ökad inspiration samt säkerställa att rekommendationerna är realistiska hölls två benchmarkingintervjuer och ett möte med en specialist inom området digitalisering. Baserat på litteraturstudien, empirin och analysen utformades en prioriteringslista för Axis som innefattas av följande sex steg, där respektive steg bör genomsyras av att ”Kontinuerligt arbeta med digitala möjligheter och utmaningar”. Skapa intern förståelse Skapa nära och långsiktiga samarbeten med leverantörerna Undersöka värdet av att digitalisera kommunikationen Förändra och effektivisera nuvarande arbetssätt Anpassa digitala lösningar utefter leverantörens mognadsgrad Fortsätta implementera EDI För att åstadkomma en lyckad digital satsning bör Axis inledningsvis arbeta med att skapa en intern förståelse. Först efter det ska Axis avsätta resurser på att förbättra leverantörssamarbetet. För att sedan säkerställa att en digital satsning är fördelaktig att genomföra ska Axis undersöka värdet av förändringen. Därefter bör Axis bestämma hur de vill förändra och effektivisera sina nuvarande arbetssätt innan de kan erbjuda leverantörerna anpassade digitala lösningar, baserat på deras digitala mognadsgrad. Efter det bör fokus vara att fortsätta implementera EDI. Då prioriteringslistan innehåller generella rekommendationer är den även applicerbar på andra företag men kan anpassas utifrån den specifika situationen. / Digitalisation has, over time, become increasingly important and the importance of companies developing in pace with its growth is expected to increase. One reason for this is globalisation, which among other things has led to increased competition. To maintain or improve competitiveness, companies should have a clear strategy for how resources for digital investments should be allocated. Another important aspect for surviving in the market is the ability of companies to manage purchases and have close and long-term supplier relationships. To achieve this, good communication is needed where information can be shared quickly and easily. Generally, companies find it difficult to develop in the same pace as the digitalisation since they prioritise their resources for other things. Thus, the study aims to answer the following research question: “How can a company prioritise its resources for upstream digitalisation?”. To answer the research question above, a case study was conducted at Axis Communications AB. The purpose of the study is to streamline and simplify the communication regarding upstream digitalisation by helping Axis prioritise its resources. To achieve this, Axis’ current flow of communication with their suppliers will be investigated. In order to obtain a credible picture of the current communication, several interviews were conducted with employees at Axis and a survey was distributed to the suppliers. To gain more inspiration and ensure that the recommendations are realistic, two benchmarking interviews and a meeting with a specialist within digitalisation were held. Based on the literature review, the empirical data and the analysis a priority list including the following six steps was designed for Axis, where each step should be permeated by “Continuous work with digital opportunities and challenges”. Create internal understanding Create close and long-term partnerships with the suppliers Examine the value of digitising the communication Change and streamline current working methods Customise digital solutions according to the supplier’s maturity Continue to implement EDI To achieve a successful digital initiative, Axis should initially work on creating an internal understanding. After that Axis will set aside resources to improve supplier collaboration. Thereafter, to ensure that a digital investment is advantageous to implement, Axis will examine the value of the change. Then, Axis should decide how they want to change and streamline their current working methods before they can offer the suppliers customised digital solutions, based on their digital maturity. At last, the focus should be on continuing to implement EDI. Since the priority list contains general recommendations, it is also applicable to other companies, but can be adapted to the specific situation.

Esta pesquisa se insere nas linhas de investigação do Centro de Pesquisa ATOPOS, da Escola de Comunicação e Artes da Universidade de São Paulo (ECA/USP) sobre os aspectos teóricos das mídias digitais. Propõe compreender, estudar, analisar e verificar como a sociabilidade expressa nos blogs está contribuindo para ressignificação e identificação dos valores culturais entre os dekasseguis por meio da construção de uma identidade comunicativa na web. A metodologia baseia-se em uma análise de fundo qualitativo da composição da postagem de oito blogs em três períodos determinados, levando em conta critérios trazidos pela determinação da tipologia de blogs e existência de comunidades e espaços conversacionais na rede digital e por fragmentos de análise usados pela análise do discurso. Entre os resultados podemos afirmar que o termo comunidade dekassegui não é apropriado se for levado em conta a sociologia clássica, porém este termo pode ser aplicado no âmbito digital. Também o termo mediascape, de Arjun Appadurai (1996), e situação social tecnológica (MEYROWITZ, 1985) se mostram presentes e relidos ao serem aplicados a este grupo. / This research fits into the lines of investigation of the ATOPOS Research Center, of Escola de Comunicação e Artes da Universidade de São Paulo [School of Communication and Arts of the University of São Paulo] (ECA/USP) on the theoretical aspects of digital media. It is intended to understanding, studying, analyzing and verifying how the sociability expressed in the blogs contributes to the redefinition and identification of the cultural values among the dekasseguis through the construction of a communicative identity in the Web. The methodology is based on the qualitative analysis of the composition of posts of eight blogs, in three determined periods, considering criteria brought by speech analysis and determination of the typology of blogs and the existence of communities and conversational spaces in the digital web. Among the results, one can state that the term dekassegui community is not appropriate, considering the classic sociology, but such term can be applied in the digital sphere. Also, the terms mediascape, of Arjun Appadurai (1996), and social technologic situation (Meyrowitz, 1985) are present and redefined when applied to this group.

Esta Tese apresenta uma contribuição para avaliação da comunicação digital na operação de veículos aéreos não tripulados (VANT) no ambiente aeronáutico. A comunicação digital aeronáutica relaciona-se diretamente ao nível de segurança crítica desejado para o controle do fluxo de tráfego aéreo, por parte de autoridades e de órgãos normativos, os quais possuem como objetivo tornar a comunicação uniforme para todos os continentes. Diversas são as discussões acerca do nível de segurança crítica que a comunicação digital entre VANT e controle em terra possa exibir, sempre buscando redução da exposição a riscos inerentes à operação desse tipo de veículo. Nesse contexto, a proposta desta Tese é avaliar a segurança na comunicação digital, por meio do uso de injeção de falhas, para operações de veículos aéreos não tripulados. Este trabalho descreve a importância de analisar as interferências causadas por falhas na comunicação digital, relacionadas ao envio de mensagens entre o órgão de controle e a aeronave não tripulada. Também são definidos quais os tipos de falhas que causam um maior impacto na comunicação, bem como quais os parâmetros que devem ser utilizados para manipulação das variáveis de falhas na comunicação. Para atender a avaliação proposta, foi utilizado o ambiente simulado que reúne as características do ambiente aeronáutico, denominado PipE-SEC (Plataforma Integrada para Ensaios de Sistemas Embarcados Críticos), bem como o protocolo CPDLC (Controller-Pilot Data Link Communications) para troca de mensagens digitais. / This thesis presents a contribution to the evaluation of digital communication in the operation of unmanned aerial vehicles (UAV) in the aeronautical environment. Aeronautical digital communication relates directly to the critical safety level required for controlling the air traffic flow by authorities and regulatory agencies, which are aimed at making communication uniform for all continents. There are several discussions about the safety critical level that digital communication between UAVs and ground control can display, always seeking to reduce exposure to risks inherent in the operation of such vehicles. In this context, the proposal of this thesis is to evaluate the safety in digital communication, through the use of fault injection for operations of UAV. This work describes the importance of analyzing the interference caused by faults in digital communication related to sending messages between the control agency and the UAV. There are also defined what types of faults cause a greater impact on communication as well as which parameters should be used to simulate communication faults. To answer the proposed evaluation, we used the simulated environment that combines the features of the aeronautical environment, called PIpE-SEC (Integrated Platform for Test Critical Embedded Systems), as well as the protocol CPDLC (Controller-Pilot Data Link Communications) to exchange digital messages.

O presente trabalho é uma pesquisa tecnológica (P&D) de inovação tecnológica de produto para o mercado brasileiro, que visa desenvolver um transmissor de pressão inteligente de alta exatidão com protocolo HART e sensor piezoresistivo em parceria LSI-USP / MEMS Ltda. Fornecendo assim um protótipo de um produto competitivo no mercado brasileiro. Neste trabalho se apresenta uma arquitetura baseada nos transmissores 4-20 mA de alta exatidão da MEMS Ltda. Essa arquitetura mantém as características de desemprenho da medição analógica e adiciona os componentes necessários para suportar as funções do padrão HART com camada física Bell 202. Além da arquitetura, neste documento é apresentado: o desenvolvimento das interfaces entre o algoritmo de compensação e os algoritmos responsáveis da comunicação digital, as modificações no circuito de controle da corrente de laço para permitir a modulação do sinal de 1200 Hz e 2200 Hz usado pela comunicação digital, e o projeto de alimentação do transmissor, que foi projetado visando a eficiência para respeitar os limites de consumo de corrente. Os resultados obtidos com essa nova arquitetura, apresentam que são mantidas as características dos transmissores 4-20 mA usados como base, e que a medição digital tem um nível de erro 0,05 %FS (porcentagem de fundo de escala) menor do que a saída analógica do mesmo transmissor, valor considerável comparado com o 0,2 %FS que é o nível de erro total do sistema. Os protótipos usados para as medições foram caracterizados num processo que levou 35 dias de operação continua, validando assim o projeto elétrico e software desenvolvido. / This thesis consists of a technical research (P&D) on technological innovations of a highly accurate intelligent pressure transmitter using a HART protocol and piezoresistive sensors in collaboration with LSI-USP / MEMS Ltda. The outcome consists of a prototype of a competitive product in the Brazilian market. This project presents a product architecture based on highly accurate 4-20mA MEMS Ltda. transmitters. It maintains the features necessary for analogical measurements and adds components, which are compatible with the functions of HART with a Bell 202 physical layer. In addition to the architecture, this document presents the development of: interfaces between the compensation algorithm and digital communication algorithms, modifications of the current loop control circuit to allow signal modulation used by digital communications of 1200Hz and 2000Hz, a voltage source project, which envisioned efficiency and considered the limits of current consumption. Results of this architecture show that the 4-20mA transmitter´s characteristics, used as a starting point for the product, are maintained and that digital measurements present 0.05%FS (Full Scale) less error than analogical measurements taken by the same transmitter. This presents a significant error reduction when compared to the total error of the system, which is 0, 2 %FS. The prototypes used for measurements were tested during 35 continuous days, validating their electrical installation and software.

Esta pesquisa se insere nas linhas de investigação do Centro de Pesquisa ATOPOS, da Escola de Comunicação e Artes da Universidade de São Paulo (ECA/USP) sobre os aspectos teóricos das mídias digitais. Explora a interdisciplinaridade da comunicação digital, ressaltando os aspectos lúdicos e pedagógicos presentes na relação dialógica entre o homem e a tecnologia. Para tanto, desenvolve-se a discussão teórica de vários autores que tratam sobre tecnologia, comunicação digital, ludicidade e pedagogia. Contextualiza-se o universo dos videogames descrevendo as diversas gerações, plataformas e interações promovidas pelos diferentes gêneros de jogos. Por fim, é realizada a análise de alguns jogos como forma de sustentar o conceito de tecno-pedagogia proposto por este trabalho. / This research falls within the lines of investigation of the Research Center ATOPOS, from the School of Communication and Arts of the University of Sao Paulo (ECA / USP) on the theoretical aspects of digital media. It explores the interdisciplinarity of digital communication, highlighting the entertainment and educational aspects in the dialogical relationship between man and technology. To this end, it develops a theoretical discussion of several authors who deal on technology, digital communication, leisure and education. It contexts the universe of videogames describing the different generations, platforms and interactions promoted by different genres of games. Finally, it performs the analysis of some games as a way to sustain the concept of \"techno-pedagogy\" proposed by this work.

Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2018-11-07T18:50:04Z No. of bitstreams: 1 EvandroLeoKobersteinDissertacao2018.pdf: 10144836 bytes, checksum: a070cbab7d84e58c286d3af0a6644a90 (MD5) / Approved for entry into archive by Sara Ribeiro (sara.ribeiro@ucb.br) on 2018-11-07T18:50:20Z (GMT) No. of bitstreams: 1 EvandroLeoKobersteinDissertacao2018.pdf: 10144836 bytes, checksum: a070cbab7d84e58c286d3af0a6644a90 (MD5) / Made available in DSpace on 2018-11-07T18:50:20Z (GMT). No. of bitstreams: 1 EvandroLeoKobersteinDissertacao2018.pdf: 10144836 bytes, checksum: a070cbab7d84e58c286d3af0a6644a90 (MD5) Previous issue date: 2018-08-27 / The following dissertation studies the communication strategies of the virtual communities of the Movimento Brasil Livre (MBL) and the Mídia NINJA (MN) to mobilize citizens to participate in the process of impeachment of President Dilma Rousseff in 2016. The research has a descriptive-analytical, qualitative approach and investigates the MBL and MN postings on Facebook between April 11 and 17, 2016. The study follows the methodological framework of Depth Hermeneutics proposed by Thompson (2011), whose includes the stages: (1) Interpretation of Doxa; (2) Socio-historical analysis; (3) Formal Analysis; and (4) Interpretation/Re-interpretation. The first stage includes the theoretical chapters that discuss the paradigm shift in communication and social relations based on the evolution of technologies, focusing on the transformations of the Digital Age. In the second phase, we seek to reconstitute the historical-social context of Brazil between the years of 2013 and 2016 with the focus on the street protests and the political polarization. For the formal analysis of the messages, we used the Content Analysis tool (BARDIN, 1977) with the help of Iramuteq software for the lexical analysis and similarity of the textual corpus. The analytical categories were constructed and adapted from the meaning carriers (JASPER, 2016), the floating reading of the messages and the modes of operation of the ideology (THOMPSON, 2011). In the sequence, we perform the reinterpretation, combining the theoretical framework, the historical-social context, the investigation of the origin and the political tendency of MBL and MN and the analytical categories. In the result, we have identified that both virtual communities have developed similar communication strategies to construct their narratives about impeachment. However, the discourses were dissonant regarding the political position and the role attributed to the state and the market. Tensions between the political, economic, business, media, communication and legal social fields were preponderant for a negative social representation of the Dilma government, of the Partido dos Trabalhadores and for the polarization of opinions. At the end we propose reflections on cyberdemocracy, launching arguments that highlight advances, achievements and challenges that must be faced to build the future with freedom, equality and fraternity. / Essa dissertação estuda as estratégias de comunicação das comunidades virtuais do Movimento Brasil Livre (MBL) e da Mídia NINJA (MN) para mobilizar os cidadãos a participar do processo de impeachment da presidente Dilma Rousseff em 2016. A pesquisa tem caráter descritivo-analítico, abordagem qualitativa e investiga as postagens do MBL e da MN no Facebook entre os dias 11 e 17 de abril de 2016. O estudo segue o referencial metodológico da Hermenêutica de Profundidade (HP) proposto por Thompson (2011), cujo percurso inclui as fases: (1) Interpretação da Doxa; (2) Análise sócio-histórica; (3) Análise Formal; e (4) Interpretação/Re-interpretação. A primeira fase abrange os capítulos teóricos que discutem a mudança de paradigma na comunicação e nas relações sociais com base na evolução das tecnologias, centrando-se nas transformações da Era Digital. Na segunda fase, buscamos reconstituir o contexto histórico-social do Brasil entre os anos de 2013 e 2016 com o olhar nas manifestações de rua e na polarização política. Para a análise formal das mensagens, utilizamos a ferramenta da Análise de Conteúdo (BARDIN, 1977) com o auxílio do software Iramuteq para as análises lexical e de similitude do corpus textual. As categorias analíticas foram construídas e adaptadas a partir dos portadores de significado (JASPER, 2016), da leitura flutuante das mensagens e dos modos de operação da ideologia (THOMPSON, 2011). Na sequência, realizamos a reinterpretação, combinando o arcabouço teórico, o contexto históricosocial, a investigação da origem e tendência política do MBL e da MN e as categorias analíticas. Como resultado, identificamos que ambas as comunidades virtuais desenvolveram estratégias de comunicação semelhantes para construir suas narrativas sobre o impeachment. No entanto, os discursos foram dissonantes quanto ao posicionamento político e o papel atribuído ao Estado e ao mercado. Tensões entre os campos sociais político, econômico, empresarial, midiático, comunicacional e jurídico foram preponderantes para uma representação social negativa do governo Dilma, do Partido dos Trabalhadores e para a polarização de opiniões. Ao final propomos reflexões sobre a ciberdemocracia, lançando argumentos que destacam avanços, conquistas e desafios que precisam ser enfrentados para construirmos o futuro com liberdade, igualdade e fraternidade.

The area of this work is a combination of draping and printing. It strives towards the technique that dazzles the eye with illusions of more than one dimension. As a viewer you will believe that the prints are real drapings while they are flat surfaces. Today prints in fashion are categorized as placed prints or all-over prints, and generally created as a flat surface to decorate the garments. In this work the idea is to manipulate and challenge the boundaries of print and give it life through the body shapes and in the movement. Potentially this work could be an introduction to a new way of working with prints in fashion. This work could poosibly be presented as a new technique where placed- print and all-over prints comes together- called placed all-over prints. Also, it could develop into further techniques in using two-dimensional flatness and save fabric in using photography as an option to the real three-dimensional drapings. Furthermore could it mean savings in material as a conscious choice in the process ? This investigation explores two particular kinds of techniques, - print and draping, that are merged into one expression. The aims of this work is to find new ways of using print in combination with draping in dress and explore the possibilities to find a new technique to create interesting womenswear. To unite dimensions like two-dimensional and three-dimensional as a method of finding new forms and expressions. Through experiments with striped textiles the focus is to investigate the possibilities of greater visual effects on two-dimensional prints. For a depth and to exaggerate the directions in the fabric before translating it into a flat surface the striped textile can be a tool for further design. The striped textile has the potential to help the eye to understand the directions in the print and can be used in more than one dimension and color. To explore how to create 3D effect on 2D in print design through draping in dress is the aim of this work. / Program: Modedesignutbildningen