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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
241

A mudança nas rotinas de produção do radiojornalismo a partir do uso do Twitter: o caso da Rádio Gaúcha

Santos, Geórgia Pelissaro dos January 2013 (has links)
Made available in DSpace on 2013-12-11T01:01:41Z (GMT). No. of bitstreams: 1 000452827-Texto+Completo-0.pdf: 4469110 bytes, checksum: e4995586d94e438bdaf54b915a7b99a6 (MD5) Previous issue date: 2013 / Through the Internet´s development in which Castells (1999) calls Network Society or Information Society, the death of the radio is being discussed again - the first time was when the television appeared, in the 1950s and 1960s. The emergence of social networks exposes the radio as an obsolete vehicle (after all, has only sound), and despite its advantages, needs to reinvent itself again. That’s why the radio has joined Twitter. But with this - with the appropriation of a new tool, the work of journalists is affected. In the research that follows, it will be precisely evaluated the impact of Twitter and Radio Gaucha’s marriage. With the news making aims to understand how the production routines were changed after the incorporation of Twitter in the daily lives of journalists. / Com o desenvolvimento da internet no que Castells (1999) chama de Sociedade em Rede ou Sociedade da Informação, a possível morte do rádio voltou a ser discutida – a primeira vez foi quando do aparecimento e fortalecimento da televisão, nas décadas de 1950 e 1960. O surgimento de redes sociais reacende a discussão e expõe o rádio como um veículo obsoleto uma vez que dispõe apenas de áudio para emissão de mensagens e que, apesar de ter suas vantagens, precisa reinventar-se diante das possibilidades de multiplataforma da internet. Assim, algumas emissoras de rádio apropriaram-se de uma nova ferramenta, o Twitter, e tal apropriação fez com que o trabalho dos jornalistas fosse afetado. Na pesquisa que segue, será avaliado justamente o impacto do casamento do rádio com o Twitter na estrutura da Rádio Gaúcha, de Porto Alegre. Com o aporte teórico do Newsmaking, pretende-se entender de que maneira as rotinas de produção foram alteradas após a incorporação do Twitter no cotidiano dos jornalistas.
242

Tv e segunda tela: uma análise do horário nobre no Twitter

Canatta, Fábio January 2014 (has links)
Made available in DSpace on 2014-02-27T02:00:58Z (GMT). No. of bitstreams: 1 000453962-Texto+Completo-0.pdf: 2182449 bytes, checksum: 19d50d76bef249ca7d503f93e346d4d2 (MD5) Previous issue date: 2014 / This dissertation has as its theme the second screen experience, i. e. the audience’s habit of watching television connected to the internet in a navigation oriented by the TV content. The overall objective is to analyze whether the practice of second screen reinforces the value of the schedule, the TV stream, the live programming, and especially the social bond among viewers. Twitter’s trend topics during television prime time were adopted as the research object and integrate the corpus of this study. The material was explored based on the content analysis systematized by Bardin (1977). The theoretical framework has concepts of Wolton (1996), Fechine (2008), Cannito (2010), Jenkins (2008), Castells (2009), Bolaño (2007), Recuero (2009) and Prouxl and Shepatin (2012), among others. It was concluded that second screen offers the audience a more complex experience, intensifies the social bond – which becomes no longer invisible and silent – and reinforces the value of the broadcast programming. / Esta dissertação tem como tema a experiência da segunda tela, ou seja, o hábito da audiência de assistir televisão conectada à internet numa navegação orientada pelo conteúdo da TV. O objetivo geral é analisar se a prática da segunda tela reforça o valor da grade, do fluxo televisivo, da programação ao vivo e, principalmente, do laço social entre os telespectadores. Adotados como objeto de pesquisa, os assuntos mais comentados do Twitter durante o horário nobre da televisão integram o corpus deste estudo. O material foi explorado a partir da análise de conteúdo sistematizada por Bardin (1977). Na fundamentação teórica deste trabalho, foram utilizados, entre outros, os conceitos de Wolton (1996), Fechine (2008), Cannito (2010), Jenkins (2008), Castells (2009), Bolaño (2007), Recuero (2009) e Proulx e Shepatin (2012). Conclui-se que a segunda tela oferece uma experiência mais complexa à audiência, intensifica o laço social – que deixa de ser invisível e silencioso – e reforça o valor da grade de programação.
243

O canto dos vestibulandos em 140 caracteres: linguagem e constru??o de identidades no Twitter

Freire, Alan Eug?nio Dantas 16 April 2014 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-03-02T22:26:31Z No. of bitstreams: 1 AlanEugenioDantasFreire_DISSERT.pdf: 3700352 bytes, checksum: 8f8259abaef6035816c3bd89f95aecf7 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-03-03T21:58:07Z (GMT) No. of bitstreams: 1 AlanEugenioDantasFreire_DISSERT.pdf: 3700352 bytes, checksum: 8f8259abaef6035816c3bd89f95aecf7 (MD5) / Made available in DSpace on 2016-03-03T21:58:07Z (GMT). No. of bitstreams: 1 AlanEugenioDantasFreire_DISSERT.pdf: 3700352 bytes, checksum: 8f8259abaef6035816c3bd89f95aecf7 (MD5) Previous issue date: 2014-04-16 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / A revolu??o causada pela internet e suas diversas redes sociais acabaram por trazer ? tona fecundas reflex?es sobre a Cibercultura e o seu poder de constru??o identit?ria. O que parecia puramente moda tornou-se modo de ser, representa??o do eu, cria??o de realidade (L?VY, 1996). Considerando a linguagem enquanto um fen?meno social, que se processa por meio da intera??o, conforme nos explicita Bakhtin (1929), o discurso veiculado nas redes sociais molda o perfil dos seus usu?rios, construindo identidades que, no dizer de Hall (2006), s?o m?ltiplas e n?o-permanentes. A presente pesquisa busca analisar o uso do Twitter, por vestibulandos, elaborando uma reflex?o acerca da constru??o das suas pr?prias identidades no ciberespa?o. Os sujeitos da pesquisa s?o alunos do Educand?rio Nossa Senhora das Vit?rias, escola da rede privada do munic?pio de Ass?/RN, todos eles concluintes do Ensino M?dio. Entendendo o ano de vestibular como decisivo e motivador de uma reflex?o sempre presente acerca de sua condi??o de estudantes, os sujeitos acabam por externar suas ang?stias, medos e perspectivas no ambiente virtual, proporcionando-nos material suficiente para an?lise de como eles se constituem vestibulandos, suas expectativas para os devidos processos seletivos, al?m de diversas representa??es pertencentes ao ?mbito escolar. A partir do discurso veiculado no Twitter, expresso nas postagens selecionadas, o presente estudo revela as identidades de vestibulandos que dele emergem, o que propiciou o elenco de algumas evid?ncias. A partir delas, n?o obstante a multiplicidade das identidades observadas, foram evidenciados alguns aspectos comuns, que corroboram com as necessidades previstas pelos objetivos espec?ficos, dentre eles: sensa??o de pertencimento a um grupo ? turma e escola; mudan?a da rotina e do comportamento em rela??o aos estudos; dessacraliza??o de pr?ticas escolares tradicionais; mudan?a da identidade do vestibulando. A an?lise das postagens nos possibilitou conhecer as impress?es dos estudantes quanto ? escola, ?s disciplinas, o ritmo de estudos, o interesse com as pr?ticas escolares e, a partir de tais ind?cios, a percep??o de como o vestibular modifica o seu cotidiano e afei?oa suas identidades enquanto vestibulandos. / The revolution caused by the internet and its various social networks eventually bring forth fruitful reflections on cyberculture and the power of identity construction. What seemed purely fashion has become way of being, representation of self, reality creation (L?vy, 1996). Considering language as a social phenomenon, which occurs through interaction, as explicit in Bakhtin (1929), the speech aired on social networks shapes the profile of their users, constructing identities which, according to Hall (2006), are multiple and non-permanent . This research seeks to examine the use of Twitter by school students, developing a reflection on the construction of their own identities in cyberspace. The subjects are students of Educand?rio Nossa Senhora das Vit?rias, private school in Ass?/RN, all graduates from high school. Understanding the Vestibular year as a decisive and a reflection engine ever present about their condition of students, subjects eventually express their anxieties, fears and perspectives in the virtual environment, providing us with enough material to analyze how they are high school students, expectations for appropriate selection processes, plus several representations belonging to the school environment. From the discourse conveyed on Twitter expressed in Featured posts, this study reveals the identities of high school students that emerge from it, which led the cast of some evidence. From them, despite the multiplicity of identities observed, presented some common aspects that corroborate the requirements provided for specific objectives, such as: feeling of belonging to a group - class and school; change of routine and behavior towards education; desecration of traditional teaching practices; changing the identity of students'writings. The analysis of postings enables us to know the perceptions of students regarding the school, the disciplines , the pace of studies, interest in school practices, and from such evidence, the perception of how vestibular modify your daily life and a fondness their identities as school students.
244

Using Social Media and Professional Learning Communities as Tools for Novice Teacher Collegiality and Improved Self-Efficacy

January 2013 (has links)
abstract: Teacher attrition and the migration between schools and districts can have a negative impact on quality of education and teacher performance. Novice teachers leave the profession because they are overwhelmed by the workload and responsibilities of the job. In a previous action research cycle, I found that novice teachers' perceptions of isolation and lack of opportunities to share experiences had a negative effect on teacher perceptions of efficacy. This action research project examines the effect of leveraging social media and professional learning communities to provide opportunities for a group of novice teachers to share experiences and seek advice. By addressing the challenges that novice teachers face and providing solutions for common problems, it is the hope of this researcher that highly effective teachers will remain in the classroom. The results of the study indicate that the combined use of Twitter and YouTube in collaboration with professional learning communities will improve teacher perceptions of efficacy. Teachers who participated in the social media based professional learning communities are also more likely to remain in the classroom. / Dissertation/Thesis / Ed.D. Educational Leadership and Policy Studies 2013
245

Product Context Analysis with Twitter Data

Sun, Tao January 2016 (has links)
Context. For the product manager, the product context analysis, which aims to align their products to the market needs, is very important. By understanding the market needs, the product manager knows the product context information about the environment the products conceived and the business the products take place. The product context analysis using the product context information helps the product manager find the accurate position of his/her products and support the decision-making of the products. The product context information generally could be found in the user feedbacks. And the traditional techniques of acquiring the user feedbacks can be replaced by collecting the existed online user feedbacks with a cheaper cost. Therefore, researchers did studies on the online user feedbacks and the results showed those user feedbacks contain the product context information. Therefore, in this study, I tried to elicit the product context information from the user feedbacks posted on Twitter. Objectives. Objectives of this study are 1. I investigated what kinds of Apps can be used to collect   more related Tweets, and 2. I investigated what kinds of product context information can be elicited from the collected Tweets. Methods. To achieve the first objective, I designed unified criteria for selecting Apps and collecting App-related Tweets, and then conduct the statistical analysis to find out what is/are the factor(s) affect (s) the Tweets collection. To achieve the second objective, I conducted the directed content analysis on the collected Tweets with an indicator for identifying the product context information, and then make a descriptive statistical analysis of the elicited product context information. Results. I found the top-ranked Apps or Apps in few themes like “Health and Fitness” and “Games” have more and fresher App-related Tweets. And from my collected Tweets, I can elicit at least 15 types of product context information, the types include “user experience”, “use case”, “partner”, “competitor”, “platforms” and so on. Conclusions. This is an exploratory study of eliciting product context information from the Tweets. It presented the method of collecting the App-related Tweets and eliciting product context information from the collected Tweets. It showed what kinds of App are suitable to do so and what types of product context information can be elicited from the Tweets. This study let us be aware of that the Tweets can be used for the product context analysis, and let us know the appropriate condition to use the Tweets for the product context analysis.
246

Diseño e integración de un módulo para detectar y categorizar opiniones de reclamo en un sistema de análisis Web aplicado al rubro de las telecomunicaciones

Aguilar Ruiz, Joaquín Esteban January 2017 (has links)
Ingeniero Civil Industrial / El objetivo general de esta memoria de titulo es diseñar e integrar un módulo para detectar y categorizar opiniones de reclamos en un sistema de análisis web utilizando herramientas de Ma- chine Learning. Este trabajo se desarrolla dentro del marco del proyecto OpinionZoom, que es un proyecto de investigación y desarrollo concursado por InnovaChile de CORFO y dirigido por el Web Intelligence Centre (WIC) de la Universidad de Chile. Este proyecto busca aumentar el co- nocimiento que tienen las organizaciones sobre individuos pertenecientes a la industria que sirven, utilizando los datos públicos de los usuarios chilenos de Twitter. En esta etapa de OpinionZoom surge la oportunidad de utilizar el contenido que los usuarios envían a las cuentas de Twitter de las empresas en referencia a los reclamos, cuyo interés nace de las entrevistas y requerimientos de los comienzos de este proyecto, en conjunto con el poco provecho que extraen las empresas de esta red social. Esta memoria de título pretende comprobar la hipótesis de investigación de utilizar algoritmos de Data Mining y Machine Learning que permitan identificar opiniones de reclamos en Twitter y clasificarlas en categorías predefinidas. Lo que se divide en dos etapas, la primera consiste en identificar opiniones de reclamos en Twitter, algo que no ha sido investigado hasta el momento, y como segunda etapa categorizar el contenido de estos mensajes en función de los productos y servicios de las empresas. Para la validación de esta hipótesis se decidió por utilizar el segmento de mayor relevancia en términos de reclamos en la red social Twitter: Telecomunicaciones. El potencial de lo desarrollado en este trabajo es entregar información útil a la empresas sobre los reclamos, a nivel agregado, que sus clientes y usuarios expresan en la red social de Twitter, de modo de que puedan tomar mejores decisiones. Se utilizó un set de datos que abarcó toda la historia de cuatro cuentas de Twitter, cuya elección se basó en la relevancia en el ámbito de los reclamos en la red social. Los datos se modelaron con el enfoque Bag-Of-Words y se implementaron 4 algoritmos de Machine Learning para clasificar los tweets en una primera etapa dentro de 4 clases, incluida reclamo, y en una segunda etapa en 9 categorías predefinidas. Para la primera etapa el algoritmo Support Vector Machines entregó los mejores resultados con un F-Measure de 0.823 para la clase Reclamo. Y para la segunda etapa los mejores resultados se lograron en Support Vector Machines y Decision Trees con un accuracy de 81.3%. Lo que permite validar la hipótesis de investigación. Finalmente, se diseñó e implemento el módulo para detectar y categorizar reclamos en la plataforma web de OpinionZoom. / Este trabajo ha sido parcialmente financiado por el proyecto CORFO 13IDL2-23170
247

O papel das novas mídias no debate ambiental: uma análise dos fluxos comunicativos no twitter sobre as mudanças no Código Florestal

Medeiros, Priscila Muniz de 28 February 2013 (has links)
Submitted by Chaylane Marques (chaylane.marques@ufpe.br) on 2015-03-05T18:08:38Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) MESTRADO Priscila de Medeiros.pdf: 2938212 bytes, checksum: 064fba0384288850541f838324438bac (MD5) / Made available in DSpace on 2015-03-05T18:08:38Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) MESTRADO Priscila de Medeiros.pdf: 2938212 bytes, checksum: 064fba0384288850541f838324438bac (MD5) Previous issue date: 2013-02-28 / CAPES / O presente trabalho foi elaborado com o intuito de promover uma maior compreensão acerca do papel que as novas mídias estão desempenhando dentro do debate ambiental. Para tanto, foram estudadas as manifestações dos usuários do serviço de microblog Twitter sobre as mudanças no Código Florestal Brasileiro. Através de análises quantitativas e qualitativas, buscou-se identificar os atores envolvidos nas trocas comunicacionais e suas formas de influência e de apropriação dos novos meios, as vozes que eles representam dentro da esfera pública verde, os processos ideológicos atrelados às manifestações discursivas e as principais estratégias usadas pelos lados favoráveis e contrários à aprovação do novo Código Florestal. A hipótese central que foi trabalhada é a de que as novas mídias estão promovendo uma maior pluralidade de vozes e discursos acerca de questões ambientais. Como respaldo teórico, foram utilizados principalmente trabalhos de autores que estudam a crise ambiental, autores ligados às discussões sobre democracia e esfera pública e autores que trabalham com a temática das novas mídias. A hipótese central foi parcialmente comprovada, uma vez que, se por um lado, houve a manifestação de diferentes categorias de atores que incorporaram diferentes vozes relacionadas à esfera pública verde, por outro, o debate ideológico não foi marcado por uma pluralidade consciente no que diz respeito à defesa de diferentes modelos civilizatórios capazes de tratar da crise ambiental.
248

Twittrande och kvittrande : Finns det skillnader i språkanvändandet mellan män och kvinnor på Twitter?

Buss, Linda January 2013 (has links)
Syftet med det här arbetet är att ta reda på om det finns skillnader i hur manliga och kvinnliga användare skriver på Twitter. Genom att skapa kategorier som bygger på språkskillnader som visats i tidigare forskning kategoriseras totalt 300 tweets. Utöver skillnaderna mellan manlig och kvinnlig skrift vägs även Twitter som forum in i analysen. Kategorierna är utformade för att identifiera typiska språktendenser på Twitter. Jämförelser mellan hur kvinnor och män använder sig av förkortningar, förenklingar och engelska inslag i sina tweets är exempel på kategorier som analyseras. Kategoriseringen visar att det finns skillnader i språkanvändandet mellan könen. Slutsatsen jag drar är att digitala medier tillåter en större frihet till talspråkliga inslag i skriften. Det är både manliga och kvinnliga skribenter som skriver med talspråkliga inslag. Den största skillnaden mellan könen visar sig vara att manliga användare använder sig av mer slang i sina tweets och att kvinnliga användare använder fler förenklingar. Den största upptäckten är trots allt att likheterna mellan könen i skriftspråket är fler än skillnaderna.
249

"Vi finns några rader bort" : En kvantitativ och netnografisk studie av Viasat Sport och C More Sports twitterkonversationer / ”WE ARE JUST A FEW LINES AWAY” : A netnographic content analysis of Viasat and C More Sports twitter conversations

Johansson, Lisa January 2018 (has links)
The purpose of this essay was to examine conversations between two Swedish organizations and their customers to explore how online meetings and dialogs can affect organisations image and relationships between customers and organisations. Viasat and C More are both live sport broadcasters with online play services. The study was motivated by three research questions: (1) How high response rates do the company's Twitter accounts have on positive or negative feedback and questions? (2) What strategies do the companies twitter accounts apply to customers who experience problems with with their live broadcasts? (3) What appeal and tonality does the company's twitter accounts have? Previous research offers a descriptive account of interaction and interpersonal communication, communication strategies, relationship building between organizations and their customers on social media and effects of relationship management and relationship building in social media. The theoretical framework consists of theories about relationship building and management, interpersonal communication and crisis communication. A quantitative content analysis was implemented to analyse in what extent the chosen companies respond to their customers during September 16 2017 and November 21 2017. Data collected was 734 tweets, which resulted in 406 twitter conversations. A qualitative analysis was conducted with methodological tools form nethnography and social network analysis. The findings showed that both companies answered the majority of received tweets. Patterns and themes were found in the qualitative study that showed both differences and similarities in C More and Viasat’ way of interacting. Viasat often has the last word, and end conversations more often than C More did. Both companies act accordingly to Benoits theories about image restoration. Findings also suggest that both companies risk their reputations and images by engaging in dialog. Interaction and commitment is also the key to build and nurture customer and organisation relationship in order to gain positive outcomes.
250

Herramientas de análisis de opinión en redes sociales virtuales

Pliouchtchai, Iván January 2014 (has links)
Ingeniero Civil en Computación / La masividad del uso de las redes sociales ha crecido explosivamente en los últimos años. Resulta interesante conocer la opinión que expresan los usuarios en Twitter para realizar estudios de mercado, popularidad de marcas, candidatos presidenciales, etc. Este trabajo tiene por objetivo desarrollar un software que permita hacer análisis de opinión en Twitter. Este software se utilizó para estudiar la opinión sobre los candidatos a presidente en el año 2013 en Chile. Se estudiaron dos técnicas utilizadas para obtener el sentimiento asociado a un texto: Método Estadístico y Método Ontológico. El primer método requiere de un gran volumen de datos (textos de los que se conoce si expresan una opinión positiva o negativa) para entrenar el algoritmo. Se eligió el método ontológico, para el que se construyen manualmente reglas para identificar el sentimiento. Para aplicar estas reglas, se procesa el texto libre usando la librería FreeLing, que construye un árbol de dependencia de las palabras que componen el texto. Dicho árbol permite agrupar el sujeto con los correspondientes adjetivos, verbos, etc de las oraciones. La ontología construida consiste en patrones detectables en los arboles de dependencia, con palabras claves que pueden ir en las distintas posiciones del patrón. Hubo problemas con la librería FreeLing que no procesa correctamente texto mal escrito, como es el caso típico de los Tweets. Se tuvo que hacer un preprocesamiento al texto para ayudar a FreeLing a procesar el texto. Al hacer el análisis de los Tweets de los 7 días anteriores a la segunda vuelta, se obtuvo una popularidad del 61% para Bachelet (obtuvo 62% en las elecciones) y un 39% para Matthei (38% en las elecciones), resultado que también es cercano a las estimaciones de Brandmetrics. Otra funcionalidad desarrollada es la identificación de la posición geográfica del usuario, y por lo tanto sus Tweets, a partir del dato que él indica en el perfil de usuario. Este es un campo de texto libre. El texto se trata de calzar con una serie de expresiones regulares, que están asociadas con las regiones de Chile. Se validó la técnica desarrollada comparando los resultados obtenidos con los datos por GPS para aquellos Tweets para los que estaban disponibles, obteniendo cerca de un 90% de acierto. Sin embargo, sólo a alrededor de la mitad de los Tweets se les puede identificar la localidad usando esta técnica, lo que de todas formas es mejor que cerca del 2% de los Tweets que tienen la información del GPS. Se analizó también el uso de Twitter en función de la hora del día, observando la máxima actividad en la noche, durante y después de los noticieros.

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