10 research outputs found

    Design Development Test and Evaluation (DDT and E) Considerations for Safe and Reliable Human Rated Spacecraft Systems

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    A team directed by the NASA Engineering and Safety Center (NESC) collected methodologies for how best to develop safe and reliable human rated systems and how to identify the drivers that provide the basis for assessing safety and reliability. The team also identified techniques, methodologies, and best practices to assure that NASA can develop safe and reliable human rated systems. The results are drawn from a wide variety of resources, from experts involved with the space program since its inception to the best-practices espoused in contemporary engineering doctrine. This report focuses on safety and reliability considerations and does not duplicate or update any existing references. Neither does it intend to replace existing standards and policy

    Ancient and historical systems

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    FCC-hh: The Hadron Collider: Future Circular Collider Conceptual Design Report Volume 3

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    In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered an energy-frontier hadron collider (FCC-hh), a highest-luminosity high-energy lepton collider (FCC-ee), the corresponding 100 km tunnel infrastructure, as well as the physics opportunities of these two colliders, and a high-energy LHC, based on FCC-hh technology. This document constitutes the third volume of the FCC Conceptual Design Report, devoted to the hadron collider FCC-hh. It summarizes the FCC-hh physics discovery opportunities, presents the FCC-hh accelerator design, performance reach, and staged operation plan, discusses the underlying technologies, the civil engineering and technical infrastructure, and also sketches a possible implementation. Combining ingredients from the Large Hadron Collider (LHC), the high-luminosity LHC upgrade and adding novel technologies and approaches, the FCC-hh design aims at significantly extending the energy frontier to 100 TeV. Its unprecedented centre of-mass collision energy will make the FCC-hh a unique instrument to explore physics beyond the Standard Model, offering great direct sensitivity to new physics and discoveries

    FCC-hh: The Hadron Collider: Future Circular Collider Conceptual Design Report Volume 3

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    Overview of the physics potential of a future hadron collider

    FCC-hh: The Hadron Collider: Future Circular Collider Conceptual Design Report Volume 3

    Get PDF
    In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered an energy-frontier hadron collider (FCC-hh), a highest-luminosity high-energy lepton collider (FCC-ee), the corresponding 100 km tunnel infrastructure, as well as the physics opportunities of these two colliders, and a high-energy LHC, based on FCC-hh technology. This document constitutes the third volume of the FCC Conceptual Design Report, devoted to the hadron collider FCC-hh. It summarizes the FCC-hh physics discovery opportunities, presents the FCC-hh accelerator design, performance reach, and staged operation plan, discusses the underlying technologies, the civil engineering and technical infrastructure, and also sketches a possible implementation. Combining ingredients from the Large Hadron Collider (LHC), the high-luminosity LHC upgrade and adding novel technologies and approaches, the FCC-hh design aims at significantly extending the energy frontier to 100 TeV. Its unprecedented centre of-mass collision energy will make the FCC-hh a unique instrument to explore physics beyond the Standard Model, offering great direct sensitivity to new physics and discoveries

    Safety and Reliability - Safe Societies in a Changing World

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    The contributions cover a wide range of methodologies and application areas for safety and reliability that contribute to safe societies in a changing world. These methodologies and applications include: - foundations of risk and reliability assessment and management - mathematical methods in reliability and safety - risk assessment - risk management - system reliability - uncertainty analysis - digitalization and big data - prognostics and system health management - occupational safety - accident and incident modeling - maintenance modeling and applications - simulation for safety and reliability analysis - dynamic risk and barrier management - organizational factors and safety culture - human factors and human reliability - resilience engineering - structural reliability - natural hazards - security - economic analysis in risk managemen

    Amélioration du processus de testabilité des circuits intégrés asynchrones dérivés de la topologie de conception d'Octasic

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    Les circuits asynchrones regroupent une grande variété de technique de conception. Octasic, une entreprise montréalaise, conçoit des processeurs dédiés au traitement de signal (DSP) qui exploitent une solution asynchrone particulière de sa propre invention. La testabilité de ce type de circuit a déjà fait l’objet de précédents travaux de recherche qui ont mené au développement d’une première méthode de test et d’algorithme d’analyse. Cependant, l’aspect de l’automatisation de cette méthode qui est pourtant nécessaire à sa démocratisation n’a pour l’instant pas été traité. Ce mémoire propose donc d’améliorer et d’automatiser autant que possible la méthode de test précédemment développée pour les circuits asynchrones qui utilisent la topologie de design des DSP d’Octasic. Contrairement à la méthode de test initial, le processus développé prend en charge la testabilité des machines à états finis et la gestion des structures de réseau d’horloges complexe qui peuvent contenir des registres. À travers plusieurs circuits asynchrones de différentes complexités, on introduit un flot de testabilité en partie automatisé qui débute à partir de la synthèse et se déroule jusqu’à la simulation des vecteurs de tests. De plus, on y présente un programme capable d’analyser l’arrangement interne des circuits pour intégrer et connecter les structures spécifiques à la technique de test. Enfin, on y expose le processus de création des procédures de test nécessaire à la génération automatisée des vecteurs de test. Pour mesurer l’efficacité du flot de testabilité créé, des vecteurs de tests sont générés et simulés. Les tests menés grâce à l’outil d’ATPG (Automatic Test Pattern Generator) et la simulation des vecteurs de test nous permettent d’obtenir un taux de couverture de pannes de 76.08%. Ces tests exploitent la technique du launch-on-capture à vitesse nominale sur notre circuit le plus complexe, un microprocesseur mini-MIPS asynchrone dérivé de l’architecture des DSP d’Octasic et implémenté grâce à la technologie 45nm de Cadence

    New Light Source (NLS) project: conceptual design report

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    New Hampshire general court, journal of the house of representatives 1985 session, December 5, 1984 through June 28, 1985.

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    Titles and imprints vary; Some volumes include miscellaneous state documents and reports; Rules of the House of Representative
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