Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2018-08-16T15:46:10Z No. of bitstreams: 1 Moreno Cruz Osório_.pdf: 1552076 bytes, checksum: f89242265c71e36493d75b2b5ed328c2 (MD5) / Made available in DSpace on 2018-08-16T15:46:10Z (GMT). No. of bitstreams: 1 Moreno Cruz Osório_.pdf: 1552076 bytes, checksum: f89242265c71e36493d75b2b5ed328c2 (MD5) Previous issue date: 2018-04-25 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / CNPQ – Conselho Nacional de Desenvolvimento Científico e Tecnológico / Esta tese dedica-se a elaborar o ciberacontecimento breaking news, uma formulação teórico-metodológica para compreender o breaking news no jornalismo contemporâneo realizado em redes digitais. À expressão breaking news é atribuída uma intensificação da relação entre as categorias substantivas dos valores-notícia oriunda dos níveis de extraordinariedade dos acontecimentos e as rotinas jornalísticas como procedimento chave para a realização do trabalho jornalístico. Considerando a capacidade de impor o determinismo jornalístico aos fenômenos como uma das características que mais distingue o fazer profissional, parte do pressuposto que, atualmente, tal habilidade possui contornos intrincados. Pois sua prática é suscetível a influências de um ecossistema midiático complexo, em rede, descentralizado, acelerado, fluído, e marcado pela multiplicação do número de atores capazes de construir a realidade. Partindo do ciberacontecimento, o conceito proposto de ciberacontecimento breaking news constrói teoricamente esta intensificação, oferecendo possibilidades de abordá-la empiricamente. Esta construção é realizada por meio de dois movimentos. O primeiro desenvolve a proposta teórico-metodológica. Busca interfaces com a Teoria Ator-Rede (TAR), com o conceito de rizoma, de Deleuze e Guattari, com o método da cartografia e a com prática da curadoria de conteúdo. Objetiva arquitetar a anatomia e a dinâmica do processo evenemencial de um acontecimento extraordinário ao se desenvolver em rede. O segundo movimento busca, na teoria do jornalismo recente, subsídios para sustentar o ciberacontecimento breaking news. Para isso, são analisados 75 artigos publicados em um período de dez anos (2007-2016) nos periódicos Journalism, Journalism Practice e Digital Journalism. Esta análise traça uma evolução da expressão “breaking news” na contemporaneidade observando as discussões realizadas em sua órbita. Elas nutrem e contextualizam as características do ciberacontecimento breaking news desenvolvidas no primeiro movimento. A abordagem do breaking news desenvolvida nesta tese sugere um processo de dispersão e de reconcentração das práticas jornalísticas, em um movimento cuja tendência é a ampliação das fronteiras do jornalismo. / This doctoral thesis develops the cyberevent breaking news, a theoretical-methodological proposal that aims to understand the breaking news in contemporary Journalism performed in digital networks. The expression breaking news here is understood as an intensification of the relationship between the substantive categories of the news values originated from the events’ levels of extraordinariness and the journalistic routine as a key procedure for performing the journalistic work. Knowing that the capacity to impose journalistic determinism to phenomena is one of the characteristics that distinguishes professional journalistic work, it is based on the assumption that, nowadays, this ability has intricate boundaries, since it is known that its practice is open to influences of a complex, networked, decentralized, accelerated, fluid media ecosystem that is characterized by the multiplication of the number of actors able to build the social reality. Taking the concept of cyberevent as starting point, the cyberevent breaking news builds the mentioned intensification theoretically, offering possibilities to approach it empirically. This construction is splited in two movements. The first one develops the theoretical-methodological proposal itself. It does this by creating interfaces with the Actor-Network Theory (ANT), with the Deleuze and Guattari’s concept of rhizome, with the cartography method and with content curation practice. The goal is to architect the anatomy and dynamics of the evenemential process of an extraordinary event when it happens in a network. The second one quests subsidies to sustain the cyberevent breaking news in the recent journalism theory. For this, 75 articles published over a period of ten years (2007-2016) in the journals Journalism, Journalism Practice and Digital Journalism are analyzed. This analysis traces an evolution of the expression "breaking news" in the contemporaneity observing the discussions that appears in its orbit. Such discussions feed and contextualize the characteristics of the cyberevent breaking news developed in the first effort. The understanding of the breaking news developed in this thesis suggests a process of dispersion and reconcentration of journalistic practices, in a movement that indicates the expansion of the journalism boundaries.

Breaking news implies that something urgent, important and newsworthy happened, assuming that viewers will be more curious about this event. As the mass media have continued to develop, the form of breaking news also keeps on changing. Today, the internet plays a primary role as a platform of breaking news. With online news services providing a plethora of real-time breaking news to audiences, there is a concern that online breaking news has little news value. Some scholars warned that the increase in the number of breaking news would finally impoverish the quality of journalism. Thus, this study tried to ascertain the credibility of online breaking news. This study conducted a 2 (news with/without breaking label) ⅹ 2 (high and low news value) factorial-designed experiment. The result of the experiment suggested that neither breaking news label nor newsworthiness would not increase or decrease the credibility rating. It would be possible to assume that there was no effect of such two components because audiences have already grown accustomed to the prevalence of the label breaking news and continual update of the headline of online news. Journalists might arbitrarily label specific news as breaking news, but they would keep in mind that calling something “breaking news” neither helps nor hurts. / text

abstract: Stock market news and investing tips are popular topics in Twitter. In this dissertation, first I utilize a 5-year financial news corpus comprising over 50,000 articles collected from the NASDAQ website matching the 30 stock symbols in Dow Jones Index (DJI) to train a directional stock price prediction system based on news content. Next, I proceed to show that information in articles indicated by breaking Tweet volumes leads to a statistically significant boost in the hourly directional prediction accuracies for the DJI stock prices mentioned in these articles. Secondly, I show that using document-level sentiment extraction does not yield a statistically significant boost in the directional predictive accuracies in the presence of other 1-gram keyword features. Thirdly I test the performance of the system on several time-frames and identify the 4 hour time-frame for both the price charts and for Tweet breakout detection as the best time-frame combination. Finally, I develop a set of price momentum based trade exit rules to cut losing trades early and to allow the winning trades run longer. I show that the Tweet volume breakout based trading system with the price momentum based exit rules not only improves the winning accuracy and the return on investment, but it also lowers the maximum drawdown and achieves the highest overall return over maximum drawdown. / Dissertation/Thesis / Doctoral Dissertation Computer Science 2016

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The thesis deals with the phenomenon called breaking news in a continuous broadcast of news stations. It consists of theoretical and practical part. The main aim of the theoretical part is to describe the specifics of television news and their transformation caused by the introduction of continuous broadcast. In this context, the technical means used in Czech TV that allow the audience to watch the news live will be described in detail. The main aim of the practical part is to describe the mentioned phenomenon in connection with a specific event - the shootings in Uhersky Brod in February 2015. The main attention of the quantitative research will be focused on the continuous broadcast of CT24 on 24th February 2015 in order to obtain relevant results, which will illustrate the proportion of the information related to the shooting in the CT24 broadcast. The amount of the concrete news reports will be analysed as well. All the gathered results will be then presented in the summary. Powered by TCPDF (www.tcpdf.org)

The master thesis deals with major news programmes of Czech television and RTVS during the first wave of Covid-19 pandemic. The objective of the paper is to reflect the form of the programmes Události and Správy RTVS during two selected time periods. The goal is also to map how organization and system of the work were changing in both newsrooms during 2020 and how it affected preparation and realization of the programmes. Theoretical part of the work describes the specificities of the news focused on television news and informing about breaking news and emergency situations. This chapter also recapitulates the events in 2020 in the context of the pandemic and demonstrates some of the impacts of that on different types of media. The second chapter characterizes both researched media and their major news programmes in the context of their competitive televisions. The analytical part of the work describes the used methodology and provides with the results of both parts of the research. Quantitative content analysis and semi-structured interviews were used as methods to obtain the set objectives. The results refer on how extraordinary situation affected both newsrooms which had to set up the precautions to protect their staff and to keep the broadcasting on. These new rules included some changes in the...