For applications that rely on User-Generated Content (UGC), there is a need to find what may motivate the applications user base to consistently contribute with quality content. One category of such applications is Intelligent Transportation Systems (ITS) traffic applications, which serve a specific goal; providing useful traffic-oriented content. By implementing useful incentives into Intelligent Transportation System traffic applications, the applications can better serve their purposes, and at the same time, improve their user's experience. Incentives are intrinsic or extrinsic, i.e., the motivation comes from internal- or external stimuli, which can motivate users in different ways and produce different incentive outcomes. To find the most useful incentives, and gain a better understanding of how to best stimulate active application participation, the research question addressed by this thesis is: Which incentives are useful for increasing quality content in the field of ITS traffic applications? The main method employed to address the research question was a survey. The survey was carried out to investigate what people thought was motivating in ITS traffic applications. In addition to the survey, an interview with the project manager of a Swedish ITS traffic application was done. Previous research concludes that the gain and the incentive for people or organizations hosting UGC are apparent, but the gain for the creators is not as clearly recognized and varies in which area the content is created. The findings of this study showed, from a user perspective, an interest in helping others and monetary gain, as potential incentives for implementation. The authors concluded that intrinsic inclined incentives should work better in-line with the goal of functionality and user long-term engagement, which the authors believe would be preferable for UGC based ITS traffic applications. These findings will be useful for understanding the optimal way to increase motivation for adequate quality UGC in ITS traffic applications.

O sucesso da mineração de opiniões para processar automaticamente grandes quantidades de conteúdo opinativo disponíveis na Internet tem sido demonstrado como uma solução de baixa latência e mais barata para a análise de opinião pública. No presente trabalho foi investigado se é possível prever variações de intenção de voto com base em séries temporais de sentimento extraídas de comentários de notícias, utilizando três eleições brasileiras como estudo de caso. As contribuições deste estudo de caso são: a) a comparação de duas abordagens para a mineração de opiniões em conteúdo gerado por usuários em português do Brasil; b) a proposta de dois tipos de atributos discriminantes para representar o sentimento em relação a candidatos políticos a serem usados para a previsão, c) uma abordagem para prever variações de intenção de voto que é adequada para cenários de dados esparsos. Foram desenvolvidos experimentos para avaliar a influência dos atributos discriminantes propostos em relação a acurácia da previsão, e suas respectivas preparações. Os resultados mostraram uma acurácia de 70% na previsão de variações de intenção de voto positivas e negativas. Estas contribuições são importantes passos em direção a um framework que é capaz de combinar opiniões de diversas fontes para encontrar a representatividade de uma população alvo, de modo que se possa obter previsões mais confiáveis. / The success of opinion mining for automatically processing vast amounts of opinionated content available on the Internet has been demonstrated as a less expensive and lower latency solution for gathering public opinion. In this work, we investigate whether it is possible to predict variations in vote intention based on sentiment time series extracted from news comments, using three Brazilian elections as case study. The contributions of this case study are: a) the comparison of two approaches for opinion mining in user-generated content in Brazilian Portuguese; b) the proposition of two types of features to represent sentiment behavior towards political candidates that can be used for prediction, c) an approach to predict polls vote intention variations that is adequate for scenarios of sparse data. We developed experiments to assess the influence on the forecasting accuracy of the proposed features, and their respective preparation. Our results display an accuracy of 70% in predicting positive and negative variations. These are important contributions towards a more general framework that is able to blend opinions from several different sources to find representativeness of the target population, and make more reliable predictions.

MCom (Marketing) in the School of Economic and Business Sciences at the University of the Witwatersrand, Johannesburg / With the increasing development of new technologies, organisations are encouraged to integrate these new technologies into their business model in order to be competitive and respond to consumers’ quick adaptation. Today, consumers drive organisations’ strategies across most industries including electronics. The electronic sector is a fast-paced industry and has been steadily growing in South Africa. Businesses need to consider the consumer voice in order to be successful and take into account that consumers are more influenced by their peers rather than a business advertising campaign. The internet has facilitated the communication between businesses and consumers who are using the internet more and more as a tool to seek information about a product or share information about a brand or a product; thus creating content. Therefore, businesses are no longer the sole content generators online. The aim of this study is to explain the importance of user-generated content in making sales and creating long lasting relationships with consumers. In addition, this study will highlight the factors that will enhance the positive attitude of internet users toward the use of user-generated content (UGC). For the purpose of this study, six variables were identified. Subjective norm, information quality and source credibility are the predictor variables of the study. Attitude towards UGC use, followed by brand trust, are both mediator variables and, finally, purchase intention is the depend variable in this study. The nature of the survey was quantitative research and the survey was administered to 400 individuals. Both self-administered and online surveys were distributed to women and men from 18 years to 55 years and older. Findings reveal that there is a positive relationship between the use of UGC, brand trust and purchase intention. However, it was also found that subjective norms, information quality and sour credibility were affecting the use of UGC for decision making. To improve the relationships amongst the different variables, the study suggests few recommendations that marketers need to apply for the benefit of the brand and the satisfaction of the consumers. Main recommendation is firstly that marketers get to know online audience and learn to engage consumers as well as find an opinion leader or influencers to endorse the brand. This will contribute to improving quality of the information, drive individuals to share information with each other and increase the perceived credibility of the source. Secondly, the firm platforms such as the website and social media pages need to be up to date, regularly assessed, measured and promoted through different tools in order to build brand trust and lead eventually to purchase intention. Overall, this study will assist marketers in understanding the factors leading to brand trust and purchase intention through the influence of UGC and the factors affecting it. / MT2017

Video game streaming has introduced to consumers a new method of creating branded content. Popular streaming platforms receive millions of broadcasters and viewers every month, and the current examines the influence of this type user-generated content on consumer attitudes and behaviors. The goal of this study is to understand how video game streams function as a marketing tool. To investigate this, a quantitative survey was designed and measured participants’ video gaming habits and their perceptions of credibility, usefulness of content, group identification, and purchase intention. Heavier gaming habits were found to be positively related to perceived credibility in a user-generated stream condition. Group identification and stream familiarity were found to be positively related to perceived credibility. These findings hold implications for using video game streams as a marketing tool, as heavier gamers were found perceive user-generated streams as a credible source of information.

The recent breakthroughs in communication technologies have reintroduced the user to Internet. Media consumers became empowered with the capabality to produce, and will gradually shift from the traditional role of an audience to generate content, compete with mainstream media and construct new social and cultural realities. The impact user-generated-content is having over individuals and groups is still ambiguous and requires a better understanding of both the nature of UGC and the particularity of social media platforms as a channel. The pupose of this paper is to further the discussion on how user-generated-content impact audiences in terms of opinion and behavior, particularly during periods of crisis.

Social medias användningsområde har under de senaste åren ökat. Från att till enbörjan användas av privatpersoner till att nu även vara en del av flertalet företag.Tekniken kan skapa nya tillfällen att synas, skapa kundrelationer samt kommunikationsmöjligheter. Det finns olika syften med att använda social mediamen värdet kommer inte från plattformen i sig utan från hur den används. För attett företag ska använda social media kan det finnas anledning att acceptera och varamedvetna om att kritik riktat till företaget offentliggörs. Forskning pekar på attföretag förväntas bemöta åsikter, uppfattningar och upplevelser från konsumenter.Dock saknas tydlig vetskap om hur eller på vilket sätt. Vi har genom en kvalitativstudie, intervjuat representanter från olika företag gällande deras sätt att bedrivakritikhantering på social media. Studien resulterade i tre övergripande teman medunderliggande exempel som beskriver hur företag hanterar kritik på social media. / The use of social media has increased in recent years. Individuals used it first, andnow it has become a part of multiple companies. Technology can create newopportunities for companies to show them self publicly, create customer relations aswell as communication opportunities. The purposes of using social media arevarious, but the value it brings is not from the platform itself, but from the ways it isbeing used. In order for a company to use social media, there may be reason toaccept and be aware of that criticism addressed to the company will be public.Research indicates that companies are expected to respond to opinions, perceptionsand experiences from customers. However, clear knowledge of how or in what wayis missing. We have through a qualitative study, interviewed representatives fromvarious companies regarding their way of conducting criticism management onsocial media. The study resulted in three overarching themes with underlyingexamples illustrating how companies manage criticism on social media.

The present study examines typical features of internet language found in user-generated comments collected from commenting groups from four online magazines aimed at different readerships: (1) adult women (Working Mother and Mothering), (2) adult men (Esquire), (3) young women (Seventeen) and (4) young men (Gameinformer). Approximately 5,000 words from each commenting group were collected, creating a 21,087 word corpus which was analyzed with regard to typographic (emoticons, nonstandard typography of and, personal pronouns you and I) and orthographic features (abbreviations, acronyms) as well as syntactic and stylistic features resembling spoken language (contracted forms, ellipsis of subject and/or verb and commenting tone). The results show that adult men wrote the longest comments, followed by adult women, young men and young women in descending order. Furthermore, as for the typical features regarding typography and orthography, it was found that among the four commenting groups, adult men and adult women used them very sparsely, young men used them occasionally and young women used the features most frequently. The analysis of tone showed that adult men mostly used an aggressive or neutral tone, while adult women, young women and young men mostly used a friendly or neutral tone. Young women used an aggressive tone more often than adult women and young men. Moreover, regarding the syntactic and stylistic features, results revealed that the young men were the most frequent users of ellipsis of subject and/or verb, followed by adult women, young women and adult men. Contracted forms were used extensively in the potential places of contractions, regardless of commenting group. Since young men used the ellipsis of subject and/or verb most frequently of all commenting groups and also used the contracted forms in all potential places of contractions, the conclusion is that the young men used a style that is closer to spoken English than the three other commenting groups. / Den här studien undersöker språkdrag som är typiska för språk på internet. Det material som har undersöks har hämtats från användarkommentarer i nättidningar som är riktade till fyra olika läsargrupper: (1) kvinnor (Working Mother, Mothering), (2) män (Esquire), (3) unga kvinnor (Seventeen) och (4) unga män (Gameinformer). Cirka 5 000 ord hämtades från kommentarsfälten för varje tidning, vilket resulterade i en korpus som omfattade 21 087 ord totalt. Korpusen analyserades med hänsyn till typografiska språkdrag (smileys, ickestandardiserad stavning av personliga pronomen I och you samt and) och ortografiska språkdrag (förkortningar, akronymer) samt syntaktiska och stilistiska språkdrag som påminner om talspråk (sammandragningar, ellips av subjekt och/eller predikatsverb, tonläge). Resultaten visade att män skrev de längsta kommentarerna, följda av kvinnor, unga män och unga kvinnor i fallande ordning. Vad gäller typiska typografiska och ortografiska språkdrag visar resultatet att de återfanns mycket sparsamt i kvinnornas och männens data, att de återfanns då och då i de unga männens data och att de unga kvinnorna var de som använde dessa språkdrag mest frekvent. Analys av tonläge i användarkommentarerna visade att män oftast använde en aggressiv eller neutral ton, medan kvinnor, unga kvinnor och unga män oftast använde en vänskaplig eller neutral ton. Unga kvinnor använde en aggressiv ton oftare än kvinnor och unga män. Utöver detta visade resultatet att ellips av subjekt och/eller predikatsverb var mest frekvent i de unga männens användarkommentarer, följt av kvinnornas, de unga kvinnornas och männens. Sammandragna former användes näst intill undantagslöst i hela korpusen. Eftersom pojkarna uppvisade mest frekvent användning av ellips av subjekt och/eller predikatsverb samt använde sammandragna former i full utsträckning, kan slutsatsen dras att de unga männens syntax är mer påverkad av engelskt talspråk än syntaxen hos de tre andra kommenterande grupperna.

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The new developments behind Web 2.0 have increased the complexity of web systems making the task of securing these systems a challenging problem. As a result, end-to-end security for web access has been hindered by the limitations of current web security policies and by the lack of systems that enable effective enforcement of policies. The focus of this dissertation is on how new tools and frameworks may be designed to aid the protection of web systems by acting as policy specification and enforcement points. In particular, we develop a set of policies and frameworks for three web players--the user, the web browser and the web application--that determine the end-to-end security of web content. Our contributions include a framework for users to specify security policies, a platform to enforce user policies for third-party applications, a systematic analysis of browser policy issues, and a mechanism to provide improved end-to-end security/integrity guarantees.

Originally presented as the author's thesis (doctoral)--Universität Würzburg, 2008. / Includes bibliographical references.