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Kai Fischer

    Multi-Channel-Fundraising ' clever kommunizieren, mehr Spender gewinnen
    Wie schön, dass es dich gibt
    Ich glaub, ich krieg nen Vogel
    Hans Arp, Skulpturen, sculptures
    Resilience quantification of urban areas
    High Performance Light Water Reactor - Next Generation Nuclear Power
    • 2018

      Resilience quantification of urban areas

      • 254 pages
      • 9 hours of reading

      A growing urbanization, an increasing complexity of critical infrastructure and the formation of new threats are new challenges for urban areas and require a sustainable development and a stronger coping capacity with potential adverse events. Sustainability requires a strengthening of resilience. Within this work, an integrated mathematical approach for the quantification of resilience is defined. This method allows a comprehensive evaluation of urban areas and the identification of weak spots. Statistical data are combined with physical models to assess the occurrence of multiple threats and their potential consequences. This risk based assessment is combined with time dependent recovery models to result in a quantity for resilience. Results of this framework can be applied to evaluate the effectiveness of single resilience phases, like prepare, prevent, protect, response and recover. Besides the mathematical formulation, application examples in this work assess exemplarily terroristic threats in urban surroundings with empirical information of historical events and engineering models to assess possible structural damage effects. The comparison of different urban footprints builds the basis for a resilient urban planning process.

      Resilience quantification of urban areas
    • 2012

      Hans Arps (1886-1966) Formensprache revolutionierte das Nachdenken über das Medium der Skulptur. Seine Plastik verweist nicht auf Vorbilder oder Fantasien, sondern lässt imaginäre Bilder in einem offenen Prozess aufscheinen. Die große kunsthistorische Bedeutung Hans Arps wurde in den letzten Jahren von den Diskussionen über Originale und Fälschungen im Zusammenhang mit der Gründung des Arp Museums Bahnhof Rolandseck überdeckt. Zwei unabhängige Wissenschaftler, Arie Hartog und Kai Fischer vom Gerhard-Marcks-Haus in Bremen, haben die verfügbaren Daten zum bildhauerischen Gesamtwerk von Hans Arp zusammengeführt und präsentieren damit einen wichtigen Schritt zur Klärung der Diskussion. Für jede bekannte Skulptur von Hans Arp werden alle nachweisbaren Exemplare und ihr jeweiliger Status zusammengefasst. Ein einführender Essay beschreibt die posthume Entwicklung des Werkes von Arp.

      Hans Arp, Skulpturen, sculptures
    • 2009

      High Performance Light Water Reactor - Next Generation Nuclear Power

      Conceptual Design of a Reactor Pressure Vessel and its Internals for a Supercritical Water-Cooled Reactor

      • 160 pages
      • 6 hours of reading

      Focusing on advanced nuclear technology, this book delves into the High Performance Light Water Reactor (HPLWR), which operates under supercritical steam conditions. It details the innovative design approach that allows water to function as both a moderator and coolant at supercritical pressure. The text outlines the multi-step heating process in the core to achieve high steam temperatures while adhering to safety standards. Additionally, it explores the design of fuel assembly clusters and reactor components, validated through comprehensive stress and thermal analyses.

      High Performance Light Water Reactor - Next Generation Nuclear Power