Analisi della polarità su chat di livestreaming

La Sentiment analysis, nata nell'ambito dell’informatica, è una delle aree di ricerca più attive nel campo dell’analisi del linguaggio naturale e si è diffusa ampiamente anche in altri rami scientifici come ad esempio le scienze sociali, l’economia e il marketing. L’enorme diffusione della sentiment analysis coincide con la crescita dei cosiddetti social media: siti di commercio e recensioni di prodotti, forum di discussione, blog, micro-blog e di vari social network. L'obiettivo del presente lavoro di tesi è stato quello di progettare un sistema di sentiment analysis in grado di rilevare e classificare le opinioni e i sentimenti espressi tramite chat dagli utenti della piattaforma di video streaming Twitch.tv. Per impostare ed organizzare il lavoro, giungendo quindi alla definizione del sistema che ci si è proposti di realizzare, sono stati utilizzati vari modelli di analisi in particolare le recurrent neural networks (RNNLM) e sistemi di word embedding (word2vec),nello specifico i Paragraph Vectors, applicandoli, dapprima, su dati etichettati in maniera automatica attraverso l'uso di emoticon e, successivamente, su dati etichettati a mano.

Teachers' professional development in a community

The goal of this article was to study teachers' professional development related to web-based learning in the context of the teacher community. The object was to learn in what kind of networks teachers share the knowledge of web-based learning and what are the factors in the community that support or challenge teachers professional development of web-based learning. The findings of the study revealed that there are teachers who are especially active, called the central actors in this study, in the teacher community who collaborate and share knowledge of web-based learning. These central actors share both technical and pedagogical knowledge of web-based learning in networks that include both internal and external relations in the community and involve people, artefacts and a variety of media. Furthermore, the central actors appear to bridge different fields of teaching expertise in their community. According to the central actors' experiences the important factors that support teachers' professional development of web-based learning in the community are; the possibility to learn from colleagues and from everyday working practices, an emotionally safe atmosphere, the leader's personal support and community-level commitment. Also, the flexibility in work planning, challenging pupils, shared lessons with colleagues, training events in an authentic work environment and colleagues' professionalism are considered meaningful for professional development. As challenges, the knowledge sharing of web-based learning in the community needs mutual interests, transactive memory, time and facilities, peer support, a safe atmosphere and meaningful pedagogical practices. On the basis of the findings of the study it is suggested that by intensive collaboration related to web-based learning it may be possible to break the boundaries of individual teachership and create such sociocultural activities which support collaborative professional development in the teacher community. Teachers' in-service training programs should be more sensitive to the culture of teacher communities and teachers' reciprocal relations. Further, teacher trainers should design teachers' in-service training of web-based learning in co-evolution with supporting networks which include the media and artefacts as well as people.

Teachers' professional development in a community

The goal of this article was to study teachers' professional development related to web-based learning in the context of the teacher community. The object was to learn in what kind of networks teachers share the knowledge of web-based learning and what are the factors in the community that support or challenge teachers professional development of web-based learning. The findings of the study revealed that there are teachers who are especially active, called the central actors in this study, in the teacher community who collaborate and share knowledge of web-based learning. These central actors share both technical and pedagogical knowledge of web-based learning in networks that include both internal and external relations in the community and involve people, artefacts and a variety of media. Furthermore, the central actors appear to bridge different fields of teaching expertise in their community. According to the central actors' experiences the important factors that support teachers' professional development of web-based learning in the community are; the possibility to learn from colleagues and from everyday working practices, an emotionally safe atmosphere, the leader's personal support and community-level commitment. Also, the flexibility in work planning, challenging pupils, shared lessons with colleagues, training events in an authentic work environment and colleagues' professionalism are considered meaningful for professional development. As challenges, the knowledge sharing of web-based learning in the community needs mutual interests, transactive memory, time and facilities, peer support, a safe atmosphere and meaningful pedagogical practices. On the basis of the findings of the study it is suggested that by intensive collaboration related to web-based learning it may be possible to break the boundaries of individual teachership and create such sociocultural activities which support collaborative professional development in the teacher community. Teachers' in-service training programs should be more sensitive to the culture of teacher communities and teachers' reciprocal relations. Further, teacher trainers should design teachers' in-service training of web-based learning in co-evolution with supporting networks which include the media and artefacts as well as people.

Teachers' professional development in a community

The goal of this article was to study teachers' professional development related to web-based learning in the context of the teacher community. The object was to learn in what kind of networks teachers share the knowledge of web-based learning and what are the factors in the community that support or challenge teachers professional development of web-based learning. The findings of the study revealed that there are teachers who are especially active, called the central actors in this study, in the teacher community who collaborate and share knowledge of web-based learning. These central actors share both technical and pedagogical knowledge of web-based learning in networks that include both internal and external relations in the community and involve people, artefacts and a variety of media. Furthermore, the central actors appear to bridge different fields of teaching expertise in their community. According to the central actors' experiences the important factors that support teachers' professional development of web-based learning in the community are; the possibility to learn from colleagues and from everyday working practices, an emotionally safe atmosphere, the leader's personal support and community-level commitment. Also, the flexibility in work planning, challenging pupils, shared lessons with colleagues, training events in an authentic work environment and colleagues' professionalism are considered meaningful for professional development. As challenges, the knowledge sharing of web-based learning in the community needs mutual interests, transactive memory, time and facilities, peer support, a safe atmosphere and meaningful pedagogical practices. On the basis of the findings of the study it is suggested that by intensive collaboration related to web-based learning it may be possible to break the boundaries of individual teachership and create such sociocultural activities which support collaborative professional development in the teacher community. Teachers' in-service training programs should be more sensitive to the culture of teacher communities and teachers' reciprocal relations. Further, teacher trainers should design teachers' in-service training of web-based learning in co-evolution with supporting networks which include the media and artefacts as well as people.

Having your cake and eating it too: Can regulatory agencies be both independent and accountable?

Independent regulatory agencies (IRAs) were created in various sectors and on different governmental levels to implement liberalization policies. This paper investigates the link between IRAs' independence, which is said to promote regulatory credibility and the use of technical expertise, and their accountability, which is related to the need for controlling and legitimizing independent regulators. The literature on the regulatory state anticipates a positive relation between the independence and accountability of IRAs, but systematic empirical evidence is still lacking. To tackle this question, this paper measures and compares the independence and the accountability of IRAs in three differentially liberalized sectors in Switzerland (telecommunications, electricity and railways). With the application of Social Network Analysis, this piece of research shows that IRAs can be de facto independent and accountable at the same time, but the two features do not necessarily co-evolve in the same direction.

Antifascismo y redes sociales en provincia : el Ateneo de Cultura Popular de Tandil, 1935-1936

El artículo estudia el surgimiento y la clausura del Ateneo de Cultura Popular de Tandil en el clima mundial de la lucha antifascista. Su propósito principal es identificar los mecanismos de circulación de ideas entre un centro cultural y su periferia y, a la vez, observar el contexto de recepción de ellas. Partiendo de los supuestos teóricos del social network analysis, se propone analizar el tejido de relaciones personales activado en la dinámica del centro cultural para explicar el motivo de su clausura. Así, presenta las dimensiones estructurales e interaccionales de la red social en la que los actores se hallan insertos. Finalmente, el artículo puede ser considerado un ejercicio intelectual para entender espacios sociales de práctica cultural en los que no domina la actividad profesionalizada.

Aplicación de métodos bibliométricos a la evaluación de colecciones : El caso de la Biblioteca del Instituto Argentino de Radioastronomía

Con el objetivo de determinar el grupo de publicaciones nucleares a considerar en el desarrollo de la colección de la Biblioteca del IAR, se realiza un estudio bibliométrico de la producción y del consumo de literatura científica de los investigadores de la institución a la que la biblioteca pertenece. A partir del análisis de referencias de los trabajos publicados por los investigadores se determinan la obsolescencia y la utilidad de la literatura consultada. Mediante la extracción de palabras clave y de los autores se determinan también los frentes de investigación del instituto y los grupos de investigadores que trabajan en esos frentes, aplicando los métodos de análisis de co-ocurrencia de palabras, coautorías y análisis de redes sociales. Los resultados dan cuenta de una baja obsolescencia para la literatura consultada, de una elevada preferencia para consultar y publicar en dos o tres títulos de publicaciones periódicas de la disciplina, y demuestran finalmente la existencia de dos frentes de investigación dentro de la institución

Análisis de co-términos y de redes sociales para la generación de mapas temáticos

La mejora de las capacidades de búsqueda y de las interfaces de los opacs sigue siendo uno de los principales desafíos para las bibliotecas, especialmente en lo que respecta al acceso por materias. Las interfaces visuales pueden facilitar la recuperación. El objetivo del presente trabajo es explorar si la combinación de técnicas de análisis de co-términos y de redes sociales resulta ser una metodología válida para la generación de mapas temáticos de la colección. La principal conclusión es que el método es válido, y que los mapas obtenidos podrían servir como interfaz visual para el acceso por materias. También es útil para detectar problemas en los criterios de indización y contribuir a la mejora de la calidad de la descripción temática del conjunto documental

Aplicación de métodos bibliométricos a la evaluación de colecciones : El caso de la Biblioteca del Instituto Argentino de Radioastronomía

Con el objetivo de determinar el grupo de publicaciones nucleares a considerar en el desarrollo de la colección de la Biblioteca del IAR, se realiza un estudio bibliométrico de la producción y del consumo de literatura científica de los investigadores de la institución a la que la biblioteca pertenece. A partir del análisis de referencias de los trabajos publicados por los investigadores se determinan la obsolescencia y la utilidad de la literatura consultada. Mediante la extracción de palabras clave y de los autores se determinan también los frentes de investigación del instituto y los grupos de investigadores que trabajan en esos frentes, aplicando los métodos de análisis de co-ocurrencia de palabras, coautorías y análisis de redes sociales. Los resultados dan cuenta de una baja obsolescencia para la literatura consultada, de una elevada preferencia para consultar y publicar en dos o tres títulos de publicaciones periódicas de la disciplina, y demuestran finalmente la existencia de dos frentes de investigación dentro de la institución

Análisis de co-términos y de redes sociales para la generación de mapas temáticos

La mejora de las capacidades de búsqueda y de las interfaces de los opacs sigue siendo uno de los principales desafíos para las bibliotecas, especialmente en lo que respecta al acceso por materias. Las interfaces visuales pueden facilitar la recuperación. El objetivo del presente trabajo es explorar si la combinación de técnicas de análisis de co-términos y de redes sociales resulta ser una metodología válida para la generación de mapas temáticos de la colección. La principal conclusión es que el método es válido, y que los mapas obtenidos podrían servir como interfaz visual para el acceso por materias. También es útil para detectar problemas en los criterios de indización y contribuir a la mejora de la calidad de la descripción temática del conjunto documental

Análisis de co-términos y de redes sociales para la generación de mapas temáticos

La mejora de las capacidades de búsqueda y de las interfaces de los opacs sigue siendo uno de los principales desafíos para las bibliotecas, especialmente en lo que respecta al acceso por materias. Las interfaces visuales pueden facilitar la recuperación. El objetivo del presente trabajo es explorar si la combinación de técnicas de análisis de co-términos y de redes sociales resulta ser una metodología válida para la generación de mapas temáticos de la colección. La principal conclusión es que el método es válido, y que los mapas obtenidos podrían servir como interfaz visual para el acceso por materias. También es útil para detectar problemas en los criterios de indización y contribuir a la mejora de la calidad de la descripción temática del conjunto documental

Aplicación de métodos bibliométricos a la evaluación de colecciones : El caso de la Biblioteca del Instituto Argentino de Radioastronomía

Con el objetivo de determinar el grupo de publicaciones nucleares a considerar en el desarrollo de la colección de la Biblioteca del IAR, se realiza un estudio bibliométrico de la producción y del consumo de literatura científica de los investigadores de la institución a la que la biblioteca pertenece. A partir del análisis de referencias de los trabajos publicados por los investigadores se determinan la obsolescencia y la utilidad de la literatura consultada. Mediante la extracción de palabras clave y de los autores se determinan también los frentes de investigación del instituto y los grupos de investigadores que trabajan en esos frentes, aplicando los métodos de análisis de co-ocurrencia de palabras, coautorías y análisis de redes sociales. Los resultados dan cuenta de una baja obsolescencia para la literatura consultada, de una elevada preferencia para consultar y publicar en dos o tres títulos de publicaciones periódicas de la disciplina, y demuestran finalmente la existencia de dos frentes de investigación dentro de la institución

The determinants of the quality of Sales-Marketing Interface in a Multinational Customer Brand Focused Company: The Latin American Branches

Customer evolution and changes in consumers, determine the fact that the quality of the interface between marketing and sales may represent a true competitive advantage for the firm. Building on multidimensional theoretical and empirical models developed in Europe and on social network analysis, the organizational interface between the marketing and sales departments of a multinational high-growth company with operations in Argentina, Uruguay and Paraguay is studied. Both, attitudinal and social network measures of information exchange are used to make operational the nature and quality of the interface and its impact on performance. Results show the existence of a positive relationship of formalization, joint planning, teamwork, trust and information transfer on interface quality, as well as a positive relationship between interface quality and business performance. We conclude that efficient design and organizational management of the exchange network are essential for the successful performance of consumer goods companies that seek to develop distinctive capabilities to adapt to markets that experience vertiginous changes

How can irrigated agriculture adapt to climate change? Insights from the Guadiana Basin in Spain

Climate change is already affecting many natural systems and human environments worldwide, like the semiarid Guadiana Basin in Spain. This paper illustrates a systematic analysis of climate change adaptation in the Guadiana irrigation farming region. The study applies a solution-oriented diagnostic framework structured along a series of sequential analytical steps. An initial stage integrates economic and hydrologic modeling to evaluate the effects of climate change on the agriculture and water sectors. Next, adaptation measures are identified and prioritized through a stakeholder-based multi-criteria analysis. Finally, a social network analysis identifies key actors and their relationships in climate change adaptation. The study shows that under a severe climate change scenario, water availability could be substantially decreased and drought occurrence will augment. In consequence, farmers will adapt their crops to a lesser amount of water and income gains will diminish, particularly for smallholder farms. Among the various adaptation measures considered, those related to private farming (new crop varieties and modern irrigation technologies) are ranked highest, whereas public-funded hard measures (reservoirs) are lowest and public soft measures (insurance) are ranked middle. In addition, stakeholders highlighted that the most relevant criteria for selecting adaptation plans are environmental protection, financial feasibility and employment creation. Nonetheless, the social network analysis evidenced the need to strengthen the links among the different stakeholder groups to facilitate the implementation of adaptation processes. In sum, the diagnostic framework applied in this research can be considered a valuable tool for guiding and supporting decision making in climate change adaptation and communicating scientific results.