383 research outputs found

    Método de estrato finito para muros de retención con cimentación flexible ante excitación sísmica

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    ResumenSe presenta un método de estrato finito para evaluar los efectos de la acción sísmica en muros de retención, el cual se basa en la teoría de propagación de ondas y superposición modal. El sistema está definido por un muro rígido desplantado sobre un estrato elástico, con capacidad de deslizamiento y volteo de la base. Con este modelo se considera tanto la flexibilidad de la cimentación como la disipación de energía por radiación de ondas. Se demuestra con resultados numéricos que la magnitud de las presiones sobre el muro depende de su capacidad de moverse.AbstractA finite layer method for evaluation of the effects of seismic action on retaining walls is presented, which is based on the wave propagation theory and modal superposition. The system is defined by a rigid wall supported on an elastic stratum, with capacity of sliding and overturning of the base. With this model, the foundation flexibility as well as the energy dissipation by wave radiation is considered. It is demonstrated with numerical results that the magnitude of pressures on the wall depends on its movement capacity

    D-STREAMON: from middlebox to distributed NFV framework for network monitoring

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    Many reasons make NFV an attractive paradigm for IT security: lowers costs, agile operations and better isolation as well as fast security updates, improved incident responses and better level of automation. On the other side, the network threats tend to be increasingly complex and distributed, implying huge traffic scale to be monitored and increasingly strict mitigation delay requirements. Considering the current trend of the net- working and the requirements to counteract to the evolution of cyber-threats, it is expected that also network monitoring will move towards NFV based solutions. In this paper, we present D- StreaMon an NFV-capable distributed framework for network monitoring realized to face the above described challenges. It relies on the StreaMon platform, a solution for network monitoring originally designed for traditional middleboxes. An evolution path which migrates StreaMon from middleboxes to Virtual Network Functions (VNFs) has been realized.Comment: Short paper at IEEE LANMAN 2017. arXiv admin note: text overlap with arXiv:1608.0137

    CROSS-ARM DOUBLE FLAP IN THE REPAIR OF SEVERE ADDUCTION CONTRACTURE OF THE THUMB

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    SUMMARY This paper describes the authors;' technique of cross-arm, double flap for the repair of severe, adduetion eontraetnre of the thumb. This technique has certain advantages over those previously described, the raw dorsal and vo|ar regions are covered simultaneously and recurrent fibrosis is averted; risk or flap necrosis: is minimal; intermetaearpal Kirsehner wires are no, longer required to maintain abduction from both the functional and aesthetic point of view, the results signal an advance in therap

    Die nichteuklidische Geometrie: historisch-kritische Darstellung ihrer Entwicklung

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    2. Aufl. Umfang: V, 207 S. Autoris. dt. Ausg. besorgt von Heinrich Liebmann (1874-1939

    Osip Mandel'Å¡tams "Egipetskaja marka"

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    The present work reconstructs the motif semantics of the story "Egipetskaya Marka" by Osip Mandel'Å¡tam, taking into account both the entire older text corpus and the intertextual slide mentioned in the narrative
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