Measuring urban renewal: a dual kernel density estimation to assess the intensity of building renovation

In the cities of post-industrialized countries, building renovation is the main part of building construction activity. Measuring that ongoing phenomenon is a problem of visualization and representation at which traditional representation tools and processes have some limitations. Databases are resources open to architectural research that provide new possibilities to develop design practice and theory. Methods related to data-driven tools can improve the analysis of the urban renovation phenomena and its distribution throughout urban areas and be of great usefulness for urban planning and public policies. To support these processes, Kernel Density Estimation (KDE) is an efficient tool that overcomes incomplete data, as not all renovation is reported to city halls. This article aims to provide a vision of the possibilities of integrating dispersed datasets. Using the city of Lisbon building permit alphanumerical and spatial database as a case study, we present preliminary work on a method of measuring building renovation intensity. Using Dual KDE we determine the intensity of building renovation across the city and along the time period, comparing the density of two different variables, the density of building renovation and the density of the city. We further provide two implementations of this methodology, using a parametric modelling environment and a GIS software.info:eu-repo/semantics/publishedVersio

Transdisciplinary insight of digital architecture

The research outlines a historic perspective of transdisciplinary digital architecture through the work of key personalities by establishing links between them. Researches on digital architecture history are generally grounded on methods with limited sets of primary sources and data is lost. Following the increasing availability of digital data sources in the internet, which were not created and structured with research purposes in mind, new methods are required for mapping, analyzing and visualizing it. Data-driven and geospatial approaches can allow researchers to address multidimensional aspects and facts. This paper presents the first preliminary results of an ongoing research.info:eu-repo/semantics/publishedVersio

Transdisciplinary in Architecture as a digital change: back to the future

This paper outlines a historic perspective of transdisciplinarity in digital architecture through the work of several key figures (architects, computer scientists, mathematicians, engineers and artists) from the 20th century. Transdisciplinary Digital Architecture deals with digital means and science. The research methodology adopted in this study allows analyzing historic documentation available on the Internet (text, audio, picture, video) to establish the links between them and their relevance to present time digital architecture. This paper aims to describe the first preliminary results of the research to establish a new theory of the digital in architecture based on a body of theoretical foundations that link “first age” transdisciplinarity to Bauhaus teaching methods, and to the early use of computers in architecture.info:eu-repo/semantics/acceptedVersio

Análise de preços agrícolas.

Recentemente, muitos analistas vêm se dedicando a examinar o crescimento dos preços de commodities. A Tabela 1 mostra que tem havido aumentos de preços expressivos para commodities agrícolas. Entre 2004 e 2007, o preço do trigo aumentou 48 %, o do milho 33 % e o do arroz 23 %. A soja ? que já estava com preços elevados em 2004 ? subiu mais 4 %. Os óleos vegetais, a soja e a palma, também mostraram aumentos importantes: 23 % e 50 %, respectivamente, entre 2004 e 2007. O açúcar atingiu o preço mais elevado em 2006, mas continua com seu preço 20 % acima do valor alcançado em 2004.Na publicação: Eliseu Alves

Commodities agrícolas e preço do petróleo.

Este artigo tem por objetivo documentar estatisticamente a relação entre preços internacionais de produtos agrícolas e o preço internacional do petróleo. Inicialmente caracteriza-se a relação entre o preço do petróleo e o preço da ureia e, em seguida, como o preço desta e das commodities escolhidas para o estudo se comportam. Os resultados mostram que a tendência no preço desses produtos é influenciada de maneira significativa pela tendência no preço do petróleo. As elasticidades estimadas estão entre 0,47 e 0,61, indicando que entre 50% e 60% das variações no preço do petróleo são transmitidas para os produtos. Ademais, choques transitórios no preço do petróleo têm impactos fortes e duradouros sobre os preços desses produtos.Na publicação: Eliseu Alves

Quantifying Quantum Correlations in Fermionic Systems using Witness Operators

We present a method to quantify quantum correlations in arbitrary systems of indistinguishable fermions using witness operators. The method associates the problem of finding the optimal entan- glement witness of a state with a class of problems known as semidefinite programs (SDPs), which can be solved efficiently with arbitrary accuracy. Based on these optimal witnesses, we introduce a measure of quantum correlations which has an interpretation analogous to the Generalized Robust- ness of entanglement. We also extend the notion of quantum discord to the case of indistinguishable fermions, and propose a geometric quantifier, which is compared to our entanglement measure. Our numerical results show a remarkable equivalence between the proposed Generalized Robustness and the Schliemann concurrence, which are equal for pure states. For mixed states, the Schliemann con- currence presents itself as an upper bound for the Generalized Robustness. The quantum discord is also found to be an upper bound for the entanglement.Comment: 7 pages, 6 figures, Accepted for publication in Quantum Information Processin

Introduction to the dossier: Brazilian cinema in the neoliberal age (O cinema brasileiro na era neoliberal)

Introdução ao dossiê

Produtividade do feijoeiro comum, em campo, em tratamentos com Trichoderma harzianum e Trichoderma asperellum.

O presente trabalho teve como objetivo avaliar o rendimento do feijoeiro comum inoculado com Trichoderma spp., para verificar se seus benefícios afetam o rendimento das lavouras.bitstream/CNPAF-2010/29779/1/comt-184.pd