159 research outputs found

    Information Systems Governance and Industry 4.0: epistemology of data and semiotic methodologies of IS in digital ecosystems

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    Preprint aceite para apresentação em International Conference on Informatics and Semiotics in Organisations ICISO, 16-18 July 2018, Reading, UK.info:eu-repo/semantics/submittedVersio

    Systems Governance and Industry 4.0: epistemology of data and semiotic methodologies of IS in digital ecosystems.

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    Trabalho apresentado em ICISO 2018: International Conference on Informatics and Semiotics in Organisation, 16-18 Julho 2018, Reading, UKContemporary Information Systems management incorporates the need to make explicit the links between semiotics, meaning-making and the digital age. This focus addresses, at its core, pure rationality, that is, the capacity of human interpretation and of human inscription upon reality. Creating the new real, that is the motto. Humans are intrinsically semiotic creatures. Consequently, semiotics is not a choice or an option but something that works like a second skin, establishing limits and permeable linkages between: (i) human thought and human's infinite world of imagination; and (ii) human action, with its correspondent infinite world of intentionality, of desire and of unexplored possibilities. Two instances are contrasted as two reading lenses of current business reality: IS governance and industry 4.0. These phenomena correspond to the need to take accountability, transparency and responsibility into account, when designing IS and when using such systems through the ecology of connectivity, Big Data and the Internet of Things. Political, social and cultural dimensions are brought into the equation, when addressing the question of the relevance and adequateness of IS theory and practice to respond to contemporary challenges. The message is that what has already been achieved is but a shadow, a pale vision, of what might be achieved in the age of the new Renaissance.N/

    Extending the social tradition on Organisational Learning: Ethics, Gender and Citizenship

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    Trabalho apresentado em II Congress on Interdisciplinarity in Social and Human Sciences CIEO, 11-12 maio 2017, Faro, PortugalN/

    Cyberpolitics, Ethical Finances and Active Citizenship in the Context of the Knowledge Economy

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    Trabalho apresentado em International Conference on Risks, Security and Citizenship, 30-31 março 2017, Setúbal, PortugalN/

    Heidegger, Technology and Sustainability: between intentionality, accountability and empowerment

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    Trabalho apresentado em 19th International Conference on Enterprise Information Systems ICEIS, 26-29 Abril 2017, Porto, Portugal.N/

    Broader terms curriculum mapping: using natural language processing and visual-supported communication to create representative program planning experiences

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    Accreditation bodies call for curriculum development processes that are open to all stakeholders, reflecting viewpoints of students, industry, university faculty, and society. However, communication difficulties between faculty and non-faculty groups leave an immense collaboration potential unexplored. Using the classification of learning objectives, natural language processing, and data visualization, this paper presents a quantitative method that delivers program plan representations that are universal, self-explanatory, and empowering; promoting stronger links between program courses and curriculum development open to all stakeholders. A simple example shows how the method contributes to representative program planning experiences and a case study is used to confirm the method’s accuracy and utility.info:eu-repo/semantics/publishedVersio

    As if economics mattered: market failure, positive externalities, HEI and the contributions from philosophy of education

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    Trabalho apresentado em 1º Encontro de Economia Política, 25-27 Janeiro de 2018, Lisboa, PortugalN/

    Dust altitude and infrared optical depth from AIRS

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    International audienceWe show that mineral dust optical depth and altitude can be retrieved from the Aqua – Advanced Infrared Radiation Sounder (AIRS) measurements. Sensitivity studies performed with a high spectral resolution radiative transfer code show that dust effect on brightness temperatures may reach about 10 Kelvins for some channels. Using a Look-Up-Table approach, we retrieve not only the 10 µm optical depth but also the altitude of Saharan dust layer, above the Atlantic Ocean, from April to September 2003. A key point of our method relies in its ability to retrieve dust altitude from satellite observations. The time and space distribution of the optical depth is in good agreement with the Moderate resolution Imaging Spectroradiometer (MODIS) products. Comparing MODIS and AIRS aerosol optical depths, we find that the ratio between infrared and visible optical depths decreases during transport from 0.35 to 0.22, revealing a loss in coarse particles caused by gravitational settling. The evolution of dust altitude from spring to summer is in agreement with the transport seasonality

    Synthesising, using, and correcting for telluric features in high-resolution astronomical spectra

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    We present a technique to synthesise telluric absorption and emission features both for in-situ wavelength calibration and for their removal from astronomical spectra. While the presented technique is applicable for a wide variety of optical and infrared spectra, we concentrate in this paper on selected high-resolution near-infrared spectra obtained with the CRIRES spectrograph to demonstrate its performance and limitation. We find that synthetic spectra reproduce telluric absorption features to about 2%, even close to saturated line cores. Thus, synthetic telluric spectra could be used to replace the observation of telluric standard stars, saving valuable observing time. This technique also provides a precise in-situ wavelength calibration, especially useful for high-resolution near-infrared spectra in the absence of other calibration sources.Comment: 11 pages, 11 figures, accepted for publication in A&A (updated version

    The 2015 edition of the GEISA spectroscopic database

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    The GEISA database (Gestion et Etude des Informations Spectroscopiques Atmospheriques: Management and Study of Atmospheric Spectroscopic Information) has been developed and maintained by the ARA/ABC(t) group at LMD since 1974. GEISA is constantly evolving, taking into account the best available spectroscopic data. This paper presents the 2015 release of GEISA (GEISA-2015), which updates the last edition of 2011 and celebrates the 40th anniversary of the database. Significant updates and additions have been implemented in the three following independent databases of GEISA. The line parameters database contains 52 molecular species (118 isotopologues) and transitions in the spectral range from 10(-6) to 35,877.031 cm(-1), representing 5,067,351 entries, against 3,794,297 in GEISA-2011. Among the previously existing molecules, 20 molecular species have been updated. A new molecule (SO3) has been added. HDO, isotopologue of H2O, is now identified as an independent molecular species. Seven new isotopologues have been added to the GEISA-2015 database. The cross section sub-database has been enriched by the addition of 43 new molecular species in its infrared part, 4 molecules (ethane, propane, acetone, acetonitrile) are also updated; they represent 3% of the update. A new section is added, in the near-infrared spectral region, involving 7 molecular species: CH3CN, CH3I, CH3O2, H2CO, HO2, HONO, NH3. The microphysical and optical properties of atmospheric aerosols sub-database has been updated for the first time since 2003. It contains more than 40 species originating from NCAR and 20 from the ARIA archive of Oxford University. As for the previous versions, this new release of GEISA and associated management software facilities are implemented and freely accessible on the AERIS/ESPRI atmospheric chemistry data center website. (C) 2016 Elsevier Inc. All rights reserved
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