Capítulos de libros

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Browsing Capítulos de libros by browse.metadata.fuente "SCOPUS"

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    Conclusions and recommendations
    (Taylor and Francis, 2023) Manen, Saskia M. van; Kremer Ramírez, Klaus Nicolás; Jaenichen, Claudine; Lin, Tingyi S.; Ramírez Andersen, Rodrigo Andrés
    This conclusion presents some closing thoughts of the key concepts discussed in the preceding chapters of this book. The book emphasizes the importance of structurally including design in all of its guises, methodologies and perspectives as standard practice in emergency management. It points out, in order to enable design for emergency management, a broader culture of design needs to become established within government agencies. The book offers suggestions of partners who can be engaged in co-designing, such as for-profit entities in the retail sector. It also offers another creative solution to this conundrum by showcasing the value of collaborating with higher education institutes. The book examines how to mobilize people by showcasing the interplay of various communication aspects, that is text, imagery, and an auditory component, which work in harmony to foreground urgency in a warning, and are intended to assist the audience in sense making and subsequent action taking.
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    Experimental Analysis of Helix Aspersa Shell as Cementitious Material
    (Springer, 2024) Campos-Cortes, María José; Brescia-Norambuena, Leonardo; Retamoso, Claudia; Escalona Burgos, Néstor Guillermo
    The high environmental impact of the cement industry demands the study of new cementitious materials. Often supplementary cementitious materials such as fly ash or silica fume are used; however, the depletion of raw materials encourages the assessment of new sources. Due to the high calcium content of snail shells, this research explored the use of crushed powder of Helix Aspersa to replace cement, evaluating its use at different percentages of replacement in weight (0, 5, and 10%), calcination temperature (0, 450, and 900 °C) and water-cementitious materials ratios (0.35, 0.40, and 0.45). The results included analysing setting time, compressive and flexural strength, water absorption, and shrinkage. Results indicated that snail shells (i) create an expansion during the first days (~15%), reaching similar values at 28 days, (ii) decrease the water absorption at calcination temperatures ≥450 °C, and (iii) slightly reduce the flexural strength (~16% in average) and compressive strength (~10% in average). As the main decrement of the responses is at a low w/cm ratio, it is expected that calcined snail shells offer the opportunity to save cement and pollution from the construction industry.
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    Media Education Challenges in a Digital Society: The Case of Chile
    (Wiley, 2021) Condeza, Ana Rayén; Gálvez Johnson, Myrna; Herrada Hidalgo, Nadia; Fernández Medina, Francisco Javier
    The executive council of UNESCO claims that media and information literacy (MIL) constitutes a concern for the entire world, due to the primary role of information, technology, and media in everyday life and in participating in every aspect of public life. However, in Chile, media education (ME) is not included in the school curriculum or in teacher training at universities. This chapter discusses the opportunities for ME in Chile. The Chile government is reviewing the digital agenda and has deployed five axes: developing a normative frame for the digital environment, expanding quality digital connectivity, digital government, promoting the development of a digital economy, and education quality. Some initiatives exist in Chile in terms of public policies for ME. They show the potential for integrating it in formal and informal settings. Securing ME and MIL in early education and continuing education for teachers is crucial but also needed for other professionals related to education.
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    News Gathering: Leveraging Transformers to Rank News
    (Springer Science and Business Media Deutschland GmbH, 2024) Munoz C.; Apolo M.J.; Ojeda M.; Lobel H.; Mendoza M.
    News media outlets disseminate information across various platforms. Often, these posts present complementary content and perspectives on the same news story. However, to compile a set of related news articles, users must thoroughly scour multiple sources and platforms, manually identifying which publications pertain to the same story. This tedious process hinders the speed at which journalists can perform essential tasks, notably fact-checking. To tackle this problem, we created a dataset containing both related and unrelated news pairs. This dataset allows us to develop information retrieval models grounded in the principle of binary relevance. Recognizing that many Transformer-based models might be suited for this task but could overemphasize relationships based on lexical connections, we tailored a dataset to fine-tune these models to focus on semantically relevant connections in the news domain. To craft this dataset, we introduced a methodology to identify pairs of news stories that are lexically similar yet refer to different events and pairs that discuss the same event but have distinct lexical structures. This design compels Transformers to recognize semantic connections between stories, even when their lexical similarities might be absent. Following a human-annotation assessment, we reveal that BERT outperformed other techniques, excelling even in challenging test cases. To ensure the reproducibility of our approach, we have made the dataset and top-performing models publicly available.