20,611 research outputs found
Theoretical outlines for a complex approach to architecture
This paper focuses on the built environment studying disciplines and their established or yet to establish connections with complex thought. It asks if there’s a path for the integration of Architecture and Urbanism on Complexity Theory. Complexity Theory is a disciplinary paradigm that often takes interdisciplinary stances upon looking at phenomenon that transcend the classically defined frontiers of science. Most phenomenon that ask for such an approach are emergent, as they represent a change in a system that cannot be irreducibly explained by decomposing it into its constituting parts. This idea allowed for complex ways to understand cities. Here, we use it to go forward on the built environment analysis and reach the building scale. If emergent phenomena result from interacting simple parts, firstly, one can imagine such simple parts to be people and their surroundings’ physical elements; but on a second look, technical advances allow us to design buildings’ physical elements as interacting parts themselves. If there’s optimization to be done in the building system, it will most certainly occur through linking these two points – as it allows for us to conceive open work adaptive structures that react to the stimulus of human occupation.info:eu-repo/semantics/publishedVersio
Produção integrada de ovinos para carne na região dos Inhamuns, município de Tauá, Ceará: Projeto Piloto.
Resumo: A Produção Integrada (PI) emprega tecnologias baseadas nas Boas Práticas Agropecuárias (BPA) que permitem o controle efetivo de todo o sistema produtivo. O objetivo da PI é a obtenção de alimentos livres de contaminação e com qualidade, produzidos com princípios de responsabilidade social e ao meio ambiente. O projeto tem a finalidade de melhorar a integração da cadeia produtiva, organizar a logística da unidade produtiva, os manejos, gestão sócio-ambiental utilizando-se de registros e normas padronizadas conforme as instituições oficiais. Na implantação do projeto em 2006, diversas reuniões foram realizadas para a sensibilização dos técnicos e produtores. Até o momento foi criado o comitê gestor, editados 04 livros sobre BPA, um capítulo de livro, realizados 08 treinamentos para técnicos e 08 para produtores perfazendo 64 pessoas, 08 reuniões técnicas, 12 visitas técnicas, aplicação de 130 questionários nas propriedades visando avaliar os sistemas de produção, reforma de unidade de processamento de produtos cárneos, um seminário, implantação de três Unidades de Referência Técnica servindo como vitrine de produção de ovinos e divulgação do projeto através de artigos. O estabelecimento de uma agenda de ações com as instituições parceiras está em andamento. As informações alcançadas visam melhorar a gestão na propriedade rural, o sistema produtivo, o processamento adequado de produtos e derivados de caprinos e ovinos e a comercialização
Black hole formation in bidimensional dilaton gravity coupled to scalar matter systems
This work deals with the formation of black hole in bidimensional dilaton
gravity coupled to scalar matter fields. We investigate two scalar matter
systems, one described by a sixth power potential and the other defined with
two scalar fields containing up to the fourth power in the fields. The
topological solutions that appear in these cases allow the formation of black
holes in the corresponding dilaton gravity models.Comment: Latex, 9 pages. Published in Mod. Phys. Lett. A14 (1999) 268
Large deviations for non-uniformly expanding maps
We obtain large deviation results for non-uniformly expanding maps with
non-flat singularities or criticalities and for partially hyperbolic
non-uniformly expanding attracting sets. That is, given a continuous function
we consider its space average with respect to a physical measure and compare
this with the time averages along orbits of the map, showing that the Lebesgue
measure of the set of points whose time averages stay away from the space
average decays to zero exponentially fast with the number of iterates involved.
As easy by-products we deduce escape rates from subsets of the basins of
physical measures for these types of maps. The rates of decay are naturally
related to the metric entropy and pressure function of the system with respect
to a family of equilibrium states. The corrections added to the published
version of this text appear in bold; see last section for a list of changesComment: 36 pages, 1 figure. After many PhD students and colleagues having
pointed several errors in the statements and proofs, this is a correction to
published article answering those comments. List of main changes in a new
last sectio
The Age Dependent Luminosities of the Red Giant Branch Bump, Asymptotic Giant Branch Bump, and Horizontal Branch Red Clump
Color-magnitude diagrams of globular clusters often exhibit a prominent
horizontal branch (HB) and may also show features such as the red giant branch
(RGB) bump and the asymptotic giant branch (AGB) bump. Stellar evolution theory
predicts that the luminosities of these features will depend on the metallicity
and age of the cluster. We calculate theoretical lines of 2 to 12 Gyr constant
age RGB-bumps and AGB-bumps in the V(HB-Bump)--[Fe/H] diagram, which shows the
brightness difference between the bump and the HB as a function of metallicity.
In order to test the predictions, we identify giant branch bumps in new Hubble
Space Telescope color-magnitude diagrams for 8 SMC clusters. First, we conclude
that the SMC cluster bumps are RGB-bumps. The data for clusters younger than ~6
Gyr are in fair agreement the relative age dependent luminosities of the HB and
RGB-bump. The V(HB-Bump)--[Fe/H] data for clusters older then ~6 Gyr
demonstrate a less satisfactory agreement with our calculations. We conclude
that ~6 Gyr is a lower bound to the age of clusters for which the Galactic
globular cluster, age independent V(HB-Bump)--[Fe/H] calibration is valid.
Application of the V(HB-bump)--[Fe/H] diagram to stellar population studies is
discussed.Comment: Accepted for publication in the Astrophysical Journal, 30 pages,
Latex aaspp4.sty, including 7 postscript figure
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