611 research outputs found
An Unsung Hero of the Tanner--Jeffrey Subramanian
No full textJeffrey Subramanian beautifies the grounds surrounding the Tanner Building, but he also writes poetry and plays the cello. The author calls Jeffrey an unsung hero because he is, in fact, the author\u27s hero
Multiscale damage in co-cured composites - Perspectives from experiments and modelling
No full textBonded and co-cured composites are popular alternatives to structures joined with mechanical fasteners in aircraft but the complex and coupled damage mechanisms in the co-cured/bonded region are poorly understood, thus making the evaluation of their strength and durability difficult with current modelling strategies. This study explores the potential of interleaf inclusion in failure-prone, critical regions of co-cured composite specimens in improving the joint strength and interface fracture toughness and strives to advance the understanding of damage initiation in the co-cured region using an atomistic model. A two-pronged approach is pursued here with bench-scale experimental testing and molecular modelling in this study. Experiments are performed for mode I fracture toughness with double cantilever beam (DCB) on composite laminates with an epoxy interleaf layer. Two epoxy resins and three methods for interleaf inclusion are explored in this study; we supplement the results from DCB testing with insights from confocal microscopy on the crack tip and the interleaf layer pre- and post-testing. Molecular dynamic (MD) simulations capture the cohesive interactions at the threephase interface containing the carbon fiber, the prepreg epoxy, and the interleaf epoxy. Results highlight that an interleaf layer made from partially-cured and filmed epoxy, further consolidated in the composite lay-up is the most effective way to suppress void formation, improve dispersion, and maximize cohesive interactions at the interface of co-cured composites.Aerospace Structures & Computational Mechanic
Bol Processor BP2
No full textBol Processor 2 (BP2) is a music composition/improvisation software producing arrangements of sound-objects with a set of rules similar to formal grammars. The inference engine produces strings of symbols feeding an algorithm for the expansion of (polymetric) polyphonic/polyrhythmic structures, and ultimately a time-setting algorithm dealing with constraints on sound-objects. First interfaced with MIDI and Csound, BP2 has a great potential for modelling durations and melodic patterns in speech synthesis.Link on SourceForge: http://bolprocessor.sourceforge.netBol Processor 2 (BP2) es uno software de composición y improvisación de música producir arreglos de sonido de objetos con un conjunto de normas similares a las gramáticas formales. El motor de inferencia produce cadenas de símbolos que alimente un algoritmo para la expansión de (polimétrico) polifónicos/polirrítmica estructuras, y en última instancia, un algoritmo de establecimiento de tiempo de hacer frente a las limitaciones en el sonido-objetos. En primer lugar interconectado con MIDI y Csound, BP2 tiene un gran potencial para el modelado de las duraciones y los patrones melódicos en la síntesis de voz.Enlace en SourceForge: http://bolprocessor.sourceforge.netBol Processor 2 (BP2) est un logiciel de composition/improvisation générant des structures d'objets sonores à partir d'un ensemble de règles similaires à celles des grammaires formelles. Le moteur d'inférence produit des chaînes de symboles auxquelles sont appliquées un algorithme d'expansion de structures polyphoniques/polyrythmiques (polymetriques), puis un algorithme de temporalisation utilisant des contraintes sur les objets sonores. Interfacé à l'origine avec MIDI et Csound, BP2 peut être utilisé pour modéliser les durées et les formes mélodiques en synthèse de la parole.Lien sur SourceForge : http://bolprocessor.sourceforge.netBEL, B. Acquisition et représentation de connaissances en musique. Thèse de Doctorat en Sciences (nouveau régime) : Université de Droit, d'Economie et des Sciences d'Aix-Marseille III. Sous la direction de M. Alain Guénoche. Novembre 1990. Paris: EDILIVRES. 2008http://tel.archives-ouvertes.fr/tel-0000969
In response to "Global left and right ventricular dysfunction after tranexamic acid administration in a polytrauma patient". Reactions to tranexamic acid: More similarities than differences
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Tertiary patterns in inclined layer convection
No full textConvection in an inclined layer generates various types of spatio-temporal patterns due to interaction of buoyancy and shear. At small angles of incline, the secondary instability of the uniform base state occurs in the form of buoyancy dominated longitudinal rolls. Above a critical angle of incline marking a co-dimension 2 point, shear driven transverse roll instabilities take over as the secondary instabilities. Computing the location of the co-dimension 2 point for varying thermal driving and inclination angle and determining all secondary bifurcations together with the resulting tertiary states allows to characterize the nonlinear phase diagram of inclined layer convection system. The semi-analytically computed phase diagram quantitatively matches experimental observations by Daniels et al. Close to the co-dimension 2 point, a subcritical secondary bifurcation leading to bistability is identified. In the bistable region, heteroclinic cycles generate bursting behavior
Permissive hypotension in a head-injured multi-trauma patient: Controversies and contradictions
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