108 research outputs found

    Big Data and Large-scale Data Analytics: Efficiency of Sustainable Scalability and Security of Centralized Clouds and Edge Deployment Architectures

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    One of the significant shifts of the next-generation computing technologies will certainly be in the development of Big Data (BD) deployment architectures. Apache Hadoop, the BD landmark, evolved as a widely deployed BD operating system. Its new features include federation structure and many associated frameworks, which provide Hadoop 3.x with the maturity to serve different markets. This dissertation addresses two leading issues involved in exploiting BD and large-scale data analytics realm using the Hadoop platform. Namely, (i)Scalability that directly affects the system performance and overall throughput using portable Docker containers. (ii) Security that spread the adoption of data protection practices among practitioners using access controls. An Enhanced Mapreduce Environment (EME), OPportunistic and Elastic Resource Allocation (OPERA) scheduler, BD Federation Access Broker (BDFAB), and a Secure Intelligent Transportation System (SITS) of multi-tiers architecture for data streaming to the cloud computing are the main contribution of this thesis study

    A Framework for Records Management in Relational Database Systems

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    The problem of records retention is often viewed as simply deleting records when they have outlived their purpose. However, in the world of relational databases there is no standardized notion of a business record and its retention obligations. Unlike physical documents such as forms and reports, information in databases is organized such that one item of data may be part of various legal records and consequently subject to several (and possibly conflicting) retention policies. This thesis proposes a framework for records retention in relational database systems. It presents a mechanism through which users can specify a broad range of protective and destructive data retention policies for relational records. Compared to naĂŻve solutions for enforcing records management policies, our framework is not only significantly more efficient but it also addresses several unanswered questions about how policies can be mapped from given legal requirements to actions on relational data. The novelty in our approach is that we defined a record in a relational database as an arbitrary logical view, effectively allowing us to reduce several challenges in enforcing data retention policies to well-studied problems in database theory. We argue that our expression based approach of tracking records management obligations is not only easier for records managers to use but also far more space/time efficient compared to traditional metadata approaches discussed in the literature. The thesis concludes with a thorough examination of the limitations of the proposed framework and suggestion for future research in the area of records management for relational database management systems

    Changing What Infrastructure Means: Instituting critical models for curatorial-infrastructural practice, artefacts and imaginaries

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    What does infrastructure institute? What can be imagined through and by infrastructure? Can the curatorial figure and reconfigure the relationship between this image and form? This thesis turns to the thoroughgoing reconfiguration of the scope of the curatorial because of, and in response to, shifts in post-global and planetary imaginaries of infrastructure. It considers how infrastructure displaces the institution as both a frame of reference and site for instituting. It tests how curatorial practices can be positioned, patterned, configured and narrated at the meso-scalar intersection of material infrastructural shifts, disinvestment and the legacies, realisation and promises of organisational imaginaries emerging because of and despite those shifts. This thesis is constructed through a series of test cases that both stage and examine the problem as (and potential of) the embodying and embedding of infrastructural meaning-making and staging in the competing alignments of the curatorial in the following infrastructural scenes: cultural infrastructural provision in the Granby Four Streets area in Liverpool by Assemble and Steinbeck Studios (2013–); in tensions implicated in infrastructural patterns of evidence in the work of the research agency Forensic Architecture; in the formal potential in configuring open and closed imaginaries in the infrastructure-critical propositions of EURO-VISION by FRAUD (2021) and Danish curatorial project Primer; and in the capacity for ongoing transformation in scalable and non-scalable infrastructural futurity staged in Alliance of the Southern Triangle’s Protocols for Phase Transition (2021) and Feral Atlas: The-More-Than-Human Anthropocene (Tsing et. al., 2020). Modelling difference staged to produce recursions, frictions and tipping points in the continuity promised by the convergence of infrastructural materialisation, mediation and practice, this thesis develops a sequence of transformative threshold concepts. Concerned with how this requires an ongoing negotiation of infrastructural difference, the thesis presents through these concepts a new vocabulary and set of procedures. Here, dynamic cura-infrastructural artefacts are used to situate the curatorial across the expanded temporal scenes of anticipation, performance and repetition of infrastructure. At stake is the capacity of expanded curatorial and artistic practice to create and meaningfully affect change in the intimate and planetary worlds that infrastructure imagines

    Proxies: the cultural work of standing in

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    How those with the power to design technology, in the very moment of design, are allowed to imagine who is included—and who is excluded—in the future. The open access edition of this book was made possible by generous funding from Arcadia – a charitable fund of Lisbet Rausing and Peter Baldwin. Our world is built on an array of standards we are compelled to share. In Proxies, Dylan Mulvin examines how we arrive at those standards, asking, “To whom and to what do we delegate the power to stand in for the world?” Mulvin shows how those with the power to design technology, in the very moment of design, are allowed to imagine who is included—and who is excluded—in the future. For designers of technology, some bits of the world end up standing in for other bits, standards with which they build and calibrate. These “proxies” carry specific values, even as they disappear from view. Mulvin explores the ways technologies, standards, and infrastructures inescapably reflect the cultural milieus of their bureaucratic homes. Drawing on archival research, he investigates some of the basic building-blocks of our shared infrastructures. He tells the history of technology through the labor and communal practices of, among others, the people who clean kilograms to make the metric system run, the women who pose as test images, and the actors who embody disease and disability for medical students. Each case maps the ways standards and infrastructure rely on prototypical ideas of whiteness, able-bodiedness, and purity to control and contain the messiness of reality. Standards and infrastructures, Mulvin argues, shape and distort the possibilities of representation, the meaning of difference, and the levers of change and social justice

    The Arab Archive: Mediated Memories and Digital Flows

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    As the revolutions across the Arab world that came to a head in 2011 devolved into civil war and military coup, representation and history acquired a renewed and contested urgency. The capacities of the internet have enabled sharing and archiving in an unprecedented fashion. Yet, at the same time, these facilities institute a globally dispersed reinforcement and recalibration of power, turning memory and knowledge into commodified and copyrighted goods. In The Arab Archive: Mediated Memories and Digital Flows, activists, artists, filmmakers, producers, and scholars examine which images of struggle have been created, bought, sold, repurposed, denounced, and expunged. As a whole, these cultural productions constitute an archive whose formats are as diverse as digital repositories looked after by activists, found footage art documentaries, Facebook archive pages, art exhibits, doctoral research projects, and ‘controversial’ or ‘violent’ protest videos that are abruptly removed from YouTube at the click of a mouse by sub-contracted employees thousands of kilometers from where they were uploaded. The Arab Archive investigates the local, regional, and international forces that determine what materials, and therefore which pasts, we can access and remember, and, conversely, which pasts get erased and forgotten
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