Arciteatro

Arciteatro è un progetto, semplice e chiaro seppur articolato, che Varisco ha preparato quando è stata invitata a partecipare al concorso indetto dal Comune di Milano per la realizzazione di una scultura destinata ad essere ubicata nella piazzetta del teatro Arcimboldi. L'artista ha così pensato di “abitare” il luogo pubblico con forme geometriche ma aperte, di quelle che spesso compaiono nelle sue opere; forme che, nel reciproco rapporto dialettico e nella tensione con l'ambiente circostante, danno vita ad una dimensione spaziale nuova, diversa, nella quale vengono messe in discussione le abitudini percettive dei fruitori, come sempre accade nei suoi lavori, spesso declinati nella dimensione concreta dello spazio circostante l'opera.Arciteatro is a simple and clear project – although very well articulated - that Varisco prepared when she was invited to participate in the competition organized by the Municipality of Milan for the construction of a sculpture intended to be located in the square near the Arcimboldi Theatre. The artist then thought of "inhabit" the public space with geometric - but open - shapes, of the kind that it’s often possible to find in his work, forms that, in their mutual dialectical relationship and tension with the surrounding environment, create a new and different spatial dimension, in which the perception habits of the public are challenged, as it always happens in her work, which are often declined in the concrete dimension of the surrounding space

Design and fabrication of elevon cove thermal protection systems for aerospace vehicles

The design study of a lightweight, effective, reuseable seal for use along the elevon cove of shuttle-type reentry and hypersonic cruise vehicles is presented. The study deals primarily with membrane seals, both metallic and non-metallic. This type of seal spans the cove gap between the wing and elevon, and does not depend on spring tension to maintain contact along a flexing wing span. Technical requirements and criteria were generally derived from the space shuttle and utilized for seal design

Algebraic K-theory of group rings and the cyclotomic trace map

We prove that the Farrell-Jones assembly map for connective algebraic K-theory is rationally injective, under mild homological finiteness conditions on the group and assuming that a weak version of the Leopoldt-Schneider conjecture holds for cyclotomic fields. This generalizes a result of B\"okstedt, Hsiang, and Madsen, and leads to a concrete description of a large direct summand of $K_n(\mathbb{Z}[G])\otimes_{\mathbb{Z}}\mathbb{Q}$ in terms of group homology. In many cases the number theoretic conjectures are true, so we obtain rational injectivity results about assembly maps, in particular for Whitehead groups, under homological finiteness assumptions on the group only. The proof uses the cyclotomic trace map to topological cyclic homology, B\"okstedt-Hsiang-Madsen's functor C, and new general isomorphism and injectivity results about the assembly maps for topological Hochschild homology and C.Comment: To appear in Advances in Mathematics. 77 page

Clusters y sistemas productivos turísticos

La pregunta principal que origina la investigación se refiere a ¿cuáles son las condiciones que hacen posible una mayor contribución de la actividad turística a los procesos de desarrollo económico local? En forma complementaria, y a la luz de la variedad de conceptos que se utilizan para analizar la estructura productiva local y los factores de competitividad territorial, surge un interrogante respecto de la utilidad del concepto de cluster para analizar los destinos turísticos objeto de la investigación. Un primer recorte del tema implica considerar destinos turísticos consolidados, excluyendo de este análisis las tipologías de destinos potenciales e incipientes. Para dar una respuesta tentativa a estos interrogantes, se parte de la consideración de la teoría de desarrollo económico local y se propone un modelo de análisis sistémico de los actores que intervienen en la actividad turística. Este modelo aporta un marco general para el análisis del concepto de cluster turístico y la consideración de las variables relevantes.Fil: Varisco, Cristina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina

La cadena productiva del turismo

La dimensión socio-económica del turismo en Santa Clara del Mar es analizada en este capítulo mediante el concepto de cadena productiva. Se describen los componentes básicos de la cadena formada por los recursos turísticos, y las actividades características del turismo con los principales eslabonamientos. La superestructura permite analizar la presencia y la ausencia de instituciones y los planes de desarrollo propuestos a través de los años. Se analizan los problemas críticos del turismo en la localidad, referidos a la estacionalidad, las fortalezas y debilidades de la imagen turística, la falta de planeamiento urbano, la insuficiencia de programas de capacitación, y la falta de cohesión socio-política. A partir de las entrevistas realizadas y la información que surge de los talleres implementados en el marco de un proyecto de extensión universitaria, es posible identificar un fuerte interés por parte de los actores locales que a pesar de no lograr vínculos asociativos, coinciden en el diagnóstico crítico de la actividad y en la necesidad de implementar en el mediano plazo las acciones correctivas.Fil: Varisco, Cristina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina.Fil: Benseny, Graciela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Económicas y Sociales; Argentina

Design and fabrication of metallic thermal protection systems for aerospace vehicles

A program was conducted to develop a lightweight, efficient metallic thermal protection system (TPS) for application to future shuttle-type reentry vehicles, advanced space transports, and hypersonic cruise vehicles. Technical requirements were generally derived from the space shuttle. A corrugation-stiffened beaded-skin TPS design was used as a baseline. The system was updated and modified to incorporate the latest technology developments and design criteria. The primary objective was to minimize mass for the total system