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Editorial
(2016)
Innovation ist menschlich
(2016)
Performance Testing and Optimization of Solar Assisted Heating Systems for Multi Family Houses
(2016)
Handbuch Rechtsextremismus
(2016)
Computational models for the personalized analysis of human femurs contain uncertainties in bone material properties and loads, which affect the simulation results. To quantify the influence we developed a probabilistic framework based on polynomial chaos (PC) that propagates stochastic input variables through any computational model. We considered a stochastic E-ρ relationship and a stochastic hip contact force, representing realistic variability of experimental data. Their influence on the prediction of principal strains (ϵ1 and ϵ3) was quantified for one human proximal femur, including sensitivity and reliability analysis. Large variabilities in the principal strain predictions were found in the cortical shell of the femoral neck, with coefficients of variation of ≈40%. Between 60 and 80% of the variance in ϵ1 and ϵ3 are attributable to the uncertainty in the E-ρ relationship, while ≈10% are caused by the load magnitude and 5-30% by the load direction. Principal strain directions were unaffected by material and loading uncertainties. The antero-superior and medial inferior sides of the neck exhibited the largest probabilities for tensile and compression failure, however all were very small (pf<0.001). In summary, uncertainty quantification with PC has been demonstrated to efficiently and accurately describe the influence of very different stochastic inputs, which increases the credibility and explanatory power of personalized analyses of human proximal femurs.
Medienästhetik des Schattens
(2016)
Der menschliche Schatten im Zeitalter seiner technischen Reproduzierbarkeit - Grundlage der Untersuchung von Kathrin Tillmanns bildet die artifizielle Präsenz des Schattens in ausgewählten Artefakten der visuellen und performativen Künste des 20. und 21. Jahrhunderts. Ihr Fokus richtet sich auf künstlerische Formen des Ausdrucks innerhalb der Bereiche Fotografie, Video, Tanz und Relational Architecture. Die Studie zeigt, dass der Schatten des menschlichen Körpers nicht mehr einzig als ästhetische, poetische Erscheinung zu fassen ist, sondern vielmehr als Teil eines Gefüges, welches zwischen medientechnologischen Ästhetisierungen, sozialen Verhaltensweisen und nicht zuletzt der Glaubwürdigkeit möglicher Bilder diffundiert