Por un lado, tenemos a Frederick Law Olmsted y su obra más emblemática, Central Park, vista siglo después de concepción través del ojo gran fotógrafo contemporáneo, Lee Friedlander (la imagen pertenece al libro Viewing Olmsted, homenaje editado por Phyllis Lambert consistente en tres reportajes llevados cabo otros tantos fotógrafos). otro apunte hecho mano Le Corbusier, uno sus característicos ...

We study experimentally blast wave dynamics on a weakly interacting fluid of light. The density and velocity are measured in 1D 2D geometries. Using state equation arising from the analogy between optical propagation paraxial approximation hydrodynamic Euler's equation, we access hydrostatic dynamic pressure. In configuration, observe negative differential pressure after fast expansion localize...

During explosive detonation or air blast experiments, long cables are commonly used for transmitting signals delivered by pressure sensors to the safe place of acquisition unit. While constant efforts undertaken enlarging bandwidth in order improve measurement precision peak pressure, limitations wired transmission these not addressed. We discuss here such and propose a wireless new solution dy...

In this paper we first establish the relation between the zeta-determinant of a Dirac Laplacian with the Dirichlet boundary condition and the APS boundary condition on a cylinder. Using this result and the gluing formula of the zetadeterminant given by Burghelea, Friedlander and Kappeler with some assumptions, we prove the adiabatic decomposition theorem of the zeta-determinant of a Dirac Lapla...

We extend the localization techniques of Bloch to simplicial spaces. As applications, we give an extension of Bloch’s localization theorem for the higher Chow groups to schemes of finite type over a regular scheme of dimension one (including mixed characteristic) and, relying on a fundamental result of Friedlander-Suslin, we globalize the Bloch-Lichtenbaum spectral sequence to give a spectral s...

Acute haemolytic anaemia associated with high titre cold agglutinins is an uncommon complication of primary atypical pneumonia. The first description of a case appears in a paper of Clough and Richter4 recording their observations on the haemagglutinins in a patient with bronchopneumonia. In the British literature Besterman and Brigden2 first reported a case and in surveying the literature foun...

We apply the machinery developed by the first-named author to the K-theory of coherent G-sheaves on a finite type G-scheme X over a field, where G is a finite group. This leads to a definition of G-equivariant higher Chow groups (different from the Chow groups of classifying spaces constructed by Totaro and generalized to arbitrary X by Edidin-Graham) and an AtiyahHirzebruch spectral sequence f...

We introduce a trust region algorithm for minimization of nons-mooth functions with linear constraints. At each iteration, the objective function is approximated by a model fuction that satisses a set of assumptions stated recently by Qi and Sun in the context of unconstrained nonsmooth optimization. The trust region iteration begins with the resolution of an \easy problem", as in recent works ...

Using a recent improvement by Bettin and Chandee to a bound of Duke, Friedlander and Iwaniec (1997) on double exponential sums with Kloosterman fractions, we establish a uniformity of distribution result for the fractional parts of Dedekind sums s(m,n) with m and n running over rather general sets. Our result extends earlier work of Myerson (1988) and Vardi (1987). Using different techniques, w...