Showing papers by "Frederico T. Fonseca published in 2014"
28 Feb 2014
TL;DR: In this article, an ontological understanding of design as centered on the logics of event and hospitality is introduced, starting from a consideration of the social-technical gap, the hermeneutic interplay of the distinct epistemological stances of ethics and technology is discussed.
Abstract: Confronted by the challenges posed by the development of massive, open, online courses, design in information science research takes on a unique ontological character. Not simply a progression from human needs toward technological fulfillment, it comes to be understood as the eventful moment of the interplay of ethical decision and the material possibilities of technology. Conceptualized as such, design work presents an image of information science as progressive, deeply historical, and imminently concerned with the question of how to live. Starting from a consideration of the social-technical gap, the hermeneutic interplay of the distinct epistemological stances of ethics and technology is discussed, and an ontological understanding of design as centered on the logics of event and hospitality is introduced.
3 citations
Proceedings Article•
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01 Jan 2014
TL;DR: The proposed Semantic Pixel will enable scientists to have access to large sets of satellite images and their metadata, regardless of source or format, and enable access to ancillary data, which is essential for advanced temporal analysis of forest cover dynamics, including major sets of natural resource data.
Abstract: Usually, images can be seen as sets of pixels or as fields over a reference space. While the former view allows image processing to function using pixel manipulation algorithms, the second one is closer to a wider understanding of what people perceive in an image. The pixel aspect is much closer to the measurement, to observations, while fields are closer to the semantic aspect, to the interpretation of the observations. This paper discusses some semantic challenges related to integration of image data from various sources, considering both views. Such integration is necessary, considering that soon a new generation of remote sensing satellites based on free and open data policies is expected to become operational, so researchers will have access to more data than they can handle with current techniques. We propose the integration of images from multiple sensors starting from a common point, which we call the Semantic Pixel. It will enable scientists to have access to large sets of satellite images and their metadata, regardless of source or format. The Semantic Pixel will also enable access to ancillary data, which is essential for advanced temporal analysis of forest cover dynamics, including major sets of natural resource data, such as vegetation, soil and geology maps. Other data encoded as fields, such as digital elevation models, relevant climatic variable maps, political maps and associated census data, can also fit this model. Resumo. Imagens podem ser vistas como um conjunto de pixels ou como campos em um espaco de referencia. Enquanto os pixels permitem que algoritmos de processamento de imagens possam funcionar, os campos estao mais proximos do que as pessoas entendam o que seja o significado de uma imagem. A visao de pixels esta muito mais proximo das medidas, das observacoes, enquanto os campos estao mais proximos da semântica, da interpretacao das observacoes. Este artigo usa estas duas visoes para discutir os desafios relativos a semântica na questao das integracao de imagens de provenientes de fontes diversas. Esta integracao e necessaria ja que brevemente novos satelites com politicas de dados abertos devem estar disponiveis o que levara os cientistas a terem mais dados do que eles possam efetivamente usar. Aqui nos apresentamos uma proposta de integracao de imagens de fontes diversas usando como plataforma inicial um ponto comum, que chamamos o Pixel Semântico. Desta maneira os cientistas teriam acesso a dados e metadados de imagens independente da fonte ou formato. O Pixel Semântico tambem possibilitaria o acesso a dados historicos que sao importantes para analises da dinâmica da vida das florestas tropicais.
2 citations
01 Mar 2014
TL;DR: This paper argues that theorizing computer-mediated communications as political engagement within a sociomaterial perspective, an understanding attentive to the mutual constitution of the social and material, allows researchers to conceptually analyze the unique political practices afforded by information and communication technologies and their function within a public sphere.
Abstract: This paper argues that theorizing computer-mediated communications as political engagement within a sociomaterial perspective, an understanding attentive to the mutual constitution of the social and material, allows researchers to conceptually analyze the unique political practices afforded by information and communication technologies and their function within a public sphere. This approach foregrounds the mutual constitution of sociomaterial practices, and recognizes the centrality of performativity and contextual multidimensionality in their constitution and analysis. In addition, articulating patterns of these practices as sociotechnical systems presents a framework for scaling local analyses toward increasing levels of analysis commensurate with public sphere theory.
1 citations