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  • Doctoral thesis
  • IT
  • DARIAH EU

  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nurra, Federico;

    L’objet de cette thèse de doctorat est une plate-forme de cartographie en ligne à l’échelle mondiale basée sur les protocoles d'échange XML et des normes standardisées.L’accent a été mis sur les spécifications minimales que les données archéologiques devraient avoir afin d’être uniformes et interopérables et, surtout, sur les caractéristiques géométriques et cartographiques qui permettraient la production d'une cartographie archéologique homogène. Jusqu’à présent, les propositions pour la production de la cartographie archéologique ont été élaborées à l'échelle locale, régionale, nationale ou, à de rares exceptions près, continentale.Grâce aux récents progrès des technologies de l’information, il est maintenant possible de créer une plate-forme ouverte pour la mise en œuvre, le stockage, l’échange, la discussion et la vérification de données archéologiques spatiales à l’échelle mondiale.Nous avons identifié les principales catégories pour l’acquisition de données archéologiques, en définissant les normes minimales de conformité des données, sans toutefois banaliser les données elles-mêmes, en évitant ainsi une perte dangereuse d’informations historico-topographiques. L’identification des quatre coordonnées des objets acquis et d’un ensemble minimal de données descriptives, plus un ensemble de métadonnées, a été fondamentale.La proposition consiste donc à développer une plateforme de cartographie en ligne, ouverte et collaborative, pour le positionnement et la représentation des vestiges archéologiques ; une sorte de « cadastre », et une base de connaissances analytique et détaillée pour aider, soutenir et traiter chaque étude territoriale. The issue of this PhD thesis is a Web Mapping platform on a global scale based on XML interchange protocols and accepted standards.The focus was on the minimum specifications that the archaeological data should have in order to be uniform and interoperable, and above all, on the geometric and cartographic characteristics that would allow the production of a homogeneous archaeological mapping. Until this moment, the proposals for the production of archaeological cartography have been developed at local, regional, national or, with rare exceptions, continental scale.Thanks to recent advances in information technology, it is now possible to create an open platform for the implementation, storage, exchange, discussion and verification of spatial archaeological data on a global scale.We have identified the primary categories for the acquisition of archaeological data, by defining the minimum standards of compliance of the data, without, however, trivialize the data themselves, thus avoiding a dangerous loss of historical-topographical information. The identification of the four coordinates of objects acquired and a minimum data set of attributes, plus a set of metadata was fundamental.The proposal is therefore the development of a Web Mapping platform, open and collaborative, for positioning and representation of archaeological remains, a sort of "cadaster", and an analytical and detailed knowledge base to assist, support and address each territorial study.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Hal; Mémoires en Sci...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Hal; Mémoires en Sci...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/

    This research analyses the European Research Infrastructure Consortium (ERIC) and on the research communities that take part in them. In particular, it examines the case study of the DARIAH-ERIC, the Research Infrastructure for the (digital) Arts and Humanities, and its Working Groups. These are communities of researchers gathered around similar research interests with the aim of providing concrete solutions to scholarly challenges. This doctoral thesis investigates collaborative practices taking place in the DARIAH Working Groups, by focussing on the epistemic and socio/political dynamics created by the interaction of practices and governance models proper of Research Infrastructures and research Communities. Finally, this research asks, do Research Infrastructures encourage collaboration among researchers? In this dissertation, I couple an institutional perspective - which has deeper roots in the field of Research Policy - with a research methodology (including ethnographic methods) originating in the Philosophy of Science and Social Epistemology. Drawing on existing literature and empirical research, I identify the concept of co-creation as central in dynamics of knowledge creation in Research Infrastructures. Concluding, I argue that within Research Infrastructures, co-creation becomes societally and culturally relevant because of its crucial role in knowledge and technology transfer between stakeholders: as an example, the DARIAH Working Groups connect several actors, such as researchers, research managers, policymakers or citizens, from different disciplines and background, and provide an answer to concrete social or scholarly challenges.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ IRIS - Università de...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Presentation . 2023
    License: CC BY
    Data sources: Datacite
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Other literature type . 2023
    License: CC BY
    Data sources: ZENODO
    KNAW Pure
    Doctoral thesis . 2023
    Data sources: KNAW Pure
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ IRIS - Università de...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ZENODO
      Presentation . 2023
      License: CC BY
      Data sources: Datacite
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ZENODO
      Other literature type . 2023
      License: CC BY
      Data sources: ZENODO
      KNAW Pure
      Doctoral thesis . 2023
      Data sources: KNAW Pure
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/

    This current PhD thesis aims at researching solutions to the long-standing gap in the research infrastructure field of formal modelling and discovery of information. Research Infrastructures (RIs) are facilities, resources and services used by the research community to conduct research and promote innovation. They provide access to tools, data and algorithms, pooled on working environments named Virtual Research Environments (VREs). Due to their nature, Research Infrastructures (RIs) are a heterogeneous landscape of resource types and diverse, often redundant, models for describing the same resource entities. Such diversity drastically diminishes the capabilities of a consistent fruition of the knowledge and skills available within an infrastructure, and ultimately limits the creation of federations of RI. The current state of knowledge in the field is even more complex due to the emerging concept of Hybrid Data Infrastructures (HDIs), which combine on-premises resources with resources provisioned by cloud and/or grid computing infrastructures. The focus of this study is to address the critical aspects of this heterogeneity and provides to the research infrastructure field both the conceptual and analytical instruments for expanding the scale at which the infrastructures currently operate. The following research questions are investigated in this study: - Research question 1: Is it possible to formalise a uniform resource model to seamlessly federate research infrastructures? - Research question 2: To what extent do state-of-the-art discovery algorithms need to be amended to properly handle VREs across Hybrid Data Infrastructures? - Research question 3: To what extent does the interface of a discovery service can support the new model and algorithms? First objective is attained with the definition of a resource model open by design. An accurate mathematical notation presents a minimal but powerful model consisting of few constructs. This is an abstract model, which can be instantiated to accommodate almost every possible scenario. Second objective is confronted with the design of a novel communication model based on the concept of transaction. Transactional models are not a new idea; rather they have been extensively described in the literature since the 80s. However, this work identifies a misapplication of these models in the context of research infrastructure and proposes changes to support the emerging requirements in the field. Lastly, the third objective refers to the impact that the first two questions have on architectural aspects of the services devoted to distribute the information in a research infrastructure. This point is deeply investigated with a detailed design of a production-ready solution to prove the validity and accuracy of the theoretical aspects of this thesis. The originality of the proposed thesis consists also in its methodology. In fact, this dissertation offers an innovative analytical and methodological approach to address these research questions. A key-enabling component of modern Hybrid Data Infrastructures, the Information System (IS), is used as platform to validate this work. An IS is central to all the themes tackled in this thesis. It exploits the resource model, plays the role of registry inside the infrastructure, deals with an intensive communication with all the other actors and works with the heterogeneity of such a context. Its ultimate goal is to provide uniform views of the resources assigned to each VRE, regardless of their origin. The study presented in this thesis has been conducted within the InfraScience group, the research group pioneering the Enabling Scientific Data Infrastructures field in the past two decades. The group operates at the Institute of Information Science and Technologies (ISTI), an institute of the Italian National Research Council (CNR). This invaluable environment provided a unique ground to develop and validate the theories illustrated in the thesis. Focusing on the validation, the abstract resource model has been instantiated in the gCube model of the D4Science HDI, while the transactional model has been translated in the design of the IS, successfully implemented and adopted by the same HDI. The dissertation carries innovative theoretical, methodological and analytical value in the research infrastructure field and especially in the emerging Hybrid Data Infrastructures. Importantly, this work has been validated in one of the most challenging contexts available. The thesis is organised in chapters: Chapters 1 and 2 describe the problem statement; Chapter 3 provides a state-of-the-art overview of the problem; Chapter 4 develops the theoretical framework by describing both the abstract and gCube resource models; Chapters 5 presents transaction model, how it can be used, and why it focuses on the transaction technique; Chapter 6 offers the core methodological support with the description of the IS to support the abstract resource model and the transaction model and; Chapters 7 and 8 conclude with the validation of proposed study and the contribution to the literature it provides.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ISTI Open Portalarrow_drop_down
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    ISTI Open Portal
    Doctoral thesis . 2019
    Data sources: ISTI Open Portal
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    CNR ExploRA
    Doctoral thesis . 2019
    Data sources: CNR ExploRA
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Thesis . 2019
    License: CC BY
    Data sources: Datacite
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Other literature type . 2019
    License: CC BY
    Data sources: ZENODO
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ISTI Open Portalarrow_drop_down
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      ISTI Open Portal
      Doctoral thesis . 2019
      Data sources: ISTI Open Portal
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      CNR ExploRA
      Doctoral thesis . 2019
      Data sources: CNR ExploRA
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ZENODO
      Thesis . 2019
      License: CC BY
      Data sources: Datacite
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ZENODO
      Other literature type . 2019
      License: CC BY
      Data sources: ZENODO
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nurra, Federico;

    L’objet de cette thèse de doctorat est une plate-forme de cartographie en ligne à l’échelle mondiale basée sur les protocoles d'échange XML et des normes standardisées.L’accent a été mis sur les spécifications minimales que les données archéologiques devraient avoir afin d’être uniformes et interopérables et, surtout, sur les caractéristiques géométriques et cartographiques qui permettraient la production d'une cartographie archéologique homogène. Jusqu’à présent, les propositions pour la production de la cartographie archéologique ont été élaborées à l'échelle locale, régionale, nationale ou, à de rares exceptions près, continentale.Grâce aux récents progrès des technologies de l’information, il est maintenant possible de créer une plate-forme ouverte pour la mise en œuvre, le stockage, l’échange, la discussion et la vérification de données archéologiques spatiales à l’échelle mondiale.Nous avons identifié les principales catégories pour l’acquisition de données archéologiques, en définissant les normes minimales de conformité des données, sans toutefois banaliser les données elles-mêmes, en évitant ainsi une perte dangereuse d’informations historico-topographiques. L’identification des quatre coordonnées des objets acquis et d’un ensemble minimal de données descriptives, plus un ensemble de métadonnées, a été fondamentale.La proposition consiste donc à développer une plateforme de cartographie en ligne, ouverte et collaborative, pour le positionnement et la représentation des vestiges archéologiques ; une sorte de « cadastre », et une base de connaissances analytique et détaillée pour aider, soutenir et traiter chaque étude territoriale. The issue of this PhD thesis is a Web Mapping platform on a global scale based on XML interchange protocols and accepted standards.The focus was on the minimum specifications that the archaeological data should have in order to be uniform and interoperable, and above all, on the geometric and cartographic characteristics that would allow the production of a homogeneous archaeological mapping. Until this moment, the proposals for the production of archaeological cartography have been developed at local, regional, national or, with rare exceptions, continental scale.Thanks to recent advances in information technology, it is now possible to create an open platform for the implementation, storage, exchange, discussion and verification of spatial archaeological data on a global scale.We have identified the primary categories for the acquisition of archaeological data, by defining the minimum standards of compliance of the data, without, however, trivialize the data themselves, thus avoiding a dangerous loss of historical-topographical information. The identification of the four coordinates of objects acquired and a minimum data set of attributes, plus a set of metadata was fundamental.The proposal is therefore the development of a Web Mapping platform, open and collaborative, for positioning and representation of archaeological remains, a sort of "cadaster", and an analytical and detailed knowledge base to assist, support and address each territorial study.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Hal; Mémoires en Sci...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Hal; Mémoires en Sci...arrow_drop_down
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/

    This research analyses the European Research Infrastructure Consortium (ERIC) and on the research communities that take part in them. In particular, it examines the case study of the DARIAH-ERIC, the Research Infrastructure for the (digital) Arts and Humanities, and its Working Groups. These are communities of researchers gathered around similar research interests with the aim of providing concrete solutions to scholarly challenges. This doctoral thesis investigates collaborative practices taking place in the DARIAH Working Groups, by focussing on the epistemic and socio/political dynamics created by the interaction of practices and governance models proper of Research Infrastructures and research Communities. Finally, this research asks, do Research Infrastructures encourage collaboration among researchers? In this dissertation, I couple an institutional perspective - which has deeper roots in the field of Research Policy - with a research methodology (including ethnographic methods) originating in the Philosophy of Science and Social Epistemology. Drawing on existing literature and empirical research, I identify the concept of co-creation as central in dynamics of knowledge creation in Research Infrastructures. Concluding, I argue that within Research Infrastructures, co-creation becomes societally and culturally relevant because of its crucial role in knowledge and technology transfer between stakeholders: as an example, the DARIAH Working Groups connect several actors, such as researchers, research managers, policymakers or citizens, from different disciplines and background, and provide an answer to concrete social or scholarly challenges.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ IRIS - Università de...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Presentation . 2023
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    Data sources: Datacite
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    This current PhD thesis aims at researching solutions to the long-standing gap in the research infrastructure field of formal modelling and discovery of information. Research Infrastructures (RIs) are facilities, resources and services used by the research community to conduct research and promote innovation. They provide access to tools, data and algorithms, pooled on working environments named Virtual Research Environments (VREs). Due to their nature, Research Infrastructures (RIs) are a heterogeneous landscape of resource types and diverse, often redundant, models for describing the same resource entities. Such diversity drastically diminishes the capabilities of a consistent fruition of the knowledge and skills available within an infrastructure, and ultimately limits the creation of federations of RI. The current state of knowledge in the field is even more complex due to the emerging concept of Hybrid Data Infrastructures (HDIs), which combine on-premises resources with resources provisioned by cloud and/or grid computing infrastructures. The focus of this study is to address the critical aspects of this heterogeneity and provides to the research infrastructure field both the conceptual and analytical instruments for expanding the scale at which the infrastructures currently operate. The following research questions are investigated in this study: - Research question 1: Is it possible to formalise a uniform resource model to seamlessly federate research infrastructures? - Research question 2: To what extent do state-of-the-art discovery algorithms need to be amended to properly handle VREs across Hybrid Data Infrastructures? - Research question 3: To what extent does the interface of a discovery service can support the new model and algorithms? First objective is attained with the definition of a resource model open by design. An accurate mathematical notation presents a minimal but powerful model consisting of few constructs. This is an abstract model, which can be instantiated to accommodate almost every possible scenario. Second objective is confronted with the design of a novel communication model based on the concept of transaction. Transactional models are not a new idea; rather they have been extensively described in the literature since the 80s. However, this work identifies a misapplication of these models in the context of research infrastructure and proposes changes to support the emerging requirements in the field. Lastly, the third objective refers to the impact that the first two questions have on architectural aspects of the services devoted to distribute the information in a research infrastructure. This point is deeply investigated with a detailed design of a production-ready solution to prove the validity and accuracy of the theoretical aspects of this thesis. The originality of the proposed thesis consists also in its methodology. In fact, this dissertation offers an innovative analytical and methodological approach to address these research questions. A key-enabling component of modern Hybrid Data Infrastructures, the Information System (IS), is used as platform to validate this work. An IS is central to all the themes tackled in this thesis. It exploits the resource model, plays the role of registry inside the infrastructure, deals with an intensive communication with all the other actors and works with the heterogeneity of such a context. Its ultimate goal is to provide uniform views of the resources assigned to each VRE, regardless of their origin. The study presented in this thesis has been conducted within the InfraScience group, the research group pioneering the Enabling Scientific Data Infrastructures field in the past two decades. The group operates at the Institute of Information Science and Technologies (ISTI), an institute of the Italian National Research Council (CNR). This invaluable environment provided a unique ground to develop and validate the theories illustrated in the thesis. Focusing on the validation, the abstract resource model has been instantiated in the gCube model of the D4Science HDI, while the transactional model has been translated in the design of the IS, successfully implemented and adopted by the same HDI. The dissertation carries innovative theoretical, methodological and analytical value in the research infrastructure field and especially in the emerging Hybrid Data Infrastructures. Importantly, this work has been validated in one of the most challenging contexts available. The thesis is organised in chapters: Chapters 1 and 2 describe the problem statement; Chapter 3 provides a state-of-the-art overview of the problem; Chapter 4 develops the theoretical framework by describing both the abstract and gCube resource models; Chapters 5 presents transaction model, how it can be used, and why it focuses on the transaction technique; Chapter 6 offers the core methodological support with the description of the IS to support the abstract resource model and the transaction model and; Chapters 7 and 8 conclude with the validation of proposed study and the contribution to the literature it provides.

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    ISTI Open Portal
    Doctoral thesis . 2019
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    Doctoral thesis . 2019
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    Thesis . 2019
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    ZENODO
    Other literature type . 2019
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      ISTI Open Portal
      Doctoral thesis . 2019
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      Thesis . 2019
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      Other literature type . 2019
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