Search

Due to time constraints on structural design processes, modelling and computational complexityis often a key concern in limit state analysis of reinforced concrete (RC) structures, causing practitioners tochoose efficient but inaccurate methods of analysis over more advanced ones. Recently, a framework usingconvex optimization for elasto-plastic, geometrically linear analysis of RC walls was proposed, enabling analysisof models with more than 10,000 finite elements within minutes on a standard PC. In order to improve theapplicability and relevance of the framework as a design tool, this paper proposes an extension that enablesthe determination of the critical buckling load. Based on the nonlinear solution obtained from the elasto-plasticoptimization problem, the cracked tangent stiffness of the RC sections is determined, and a linearized bucklingproblem is posed and solved as a linear eigenvalue problem. This allows the actual critical buckling load tobe determined by solving a sequence of optimization and eigenvalue problems. The accuracy of the proposedmethod is assessed, and its applicability to practical design scenarios is demonstrated by an analysis of an RCwall with a door hole, showing an average solution time of approximately 30 seconds per load step.

Hintergrund: Die Basis der ambulanten palliativen Versorgung sollte von Leistungserbringern der Primärversorgung (in erster Linie den niedergelassenen Hausärzten) sowie den ambulanten Pflegediensten mit palliativmedizinischer Basisqualifikation erbracht werden. Für die Beurteilung der[for full text, please go to the a.m. URL], 48. Kongress für Allgemeinmedizin und Familienmedizin

Objective: Deep brain stimulation (DBS) in different targets for Gilles de la Tourette syndrome (GTS) has been in the focus for some years with over 60 cases published. However, there is hardly any data on "psychosocial" outcome after DBS for GTS. Aim of the present naturalistic observational[for full text, please go to the a.m. URL], 63. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie (JNS)

Objective: The application of deep brain stimulation (DBS) in Gilles de la Tourette syndrome (GTS) has come into focus in recent years with the Globus pallidus internus (GPi) as one possible target. Here, we present the results of six patients with intractable GTS who underwent bilateral GPi-DBS. [for full text, please go to the a.m. URL], 62. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), Joint Meeting mit der Polnischen Gesellschaft für Neurochirurgen (PNCH)