But a walking shadow: designing, performing and learning on the virtual stage

Representing elements of reality within a medium, or taking aspects from one medium and placing them in another is an act of remediation. The process of this act, however, is largely taken for granted. Despite the fact that available information enables a qualitative assessment of the history of multimedia and their influences on different fields of knowledge, there are still some areas that require more focused research attention. For example, the relationship between media evolution and new developments in scenographic practice is currently under investigation. This article explores the issue of immediacy as a condition of modern theatre in the context of digital reality. It discusses the opportunities and challenges that recent technologies present to contemporary practitioners and theatre design educators, creating a lot of scope to break with conventions. Here, we present two case studies that look into technology-mediated learning about scenography through the employment of novel computer visualization techniques. The first case study is concerned with new ways of researching and learning about theatre through creative exploration of design artefacts. The second case study investigates the role of the Immersive Virtual World Second Life™ (SL) in effective teaching of scenography, and in creating and experiencing theatrical performances

Phenylketonuria, congenital hypothyroidism and haemoglobinopathies: public health issues for a Brazilian newborn screening program

In this study, the frequency of detected congenital hypothyroidism, phenylketonuria and haemoglobinopathies in the State of Rio de Janeiro's (Brazil) Newborn Screening Program (NBSP) was analyzed between the years of 2005 and 2007. There were two Newborn Screening Reference Centers (named NSRC A and B) with programmatic differences. In 2007, overall detection coverage reached 80.7%. The increase in the incidence of congenital hypothyroidism (1:1,030 in 2007) was attributed to the reduction of neonatal TSH value limits over time. The incidence discrepancy of phenylketonuria between NSRC A (1:28,427) and B (1:16,522) might be partially explained by the small number of cases. The incidence of sickle cell disease and its traits were uniformly high (1:1,288 and 1:21, respectively). This was coherent with the ethnic composition of the population. The differences in laboratory methods and critical values, in addition to other programmatic issues, may explain the variances in the results and limited analysis of the role of biological and environmental determinants in the occurrence of these diseases.Neste estudo, foi analisada a frequência de detecção do hipotireoidismo congênito, fenilcetonúria e hemoglobinopatias no Programa de Triagem Neonatal do Estado do Rio de Janeiro, Brasil, entre 2005 e 2007. Havia dois Serviços de Referência em Triagem Neonatal (designados SRTN A e B) com diferenças programáticas. Em 2007, a cobertura alcançou 80,7%. O aumento na incidência do hipotireoidismo congênito (1:1.030 em 2007) foi atribuído à redução no valor de corte do TSH ao longo do tempo. As incidências discrepantes da fenilcetonúria entre os modelos (SRTN A - 1:28.427; SR-TN B - 1:16.522) podem ser parcialmente explicadas pelo pequeno número de casos. A incidência da doença falciforme e do traço falcêmico foi uniformemente elevada (1:1.288 e 1:21, respectivamente), sendo coerente com a composição étnica da população. As diferenças nos métodos laboratoriais e valores críticos, além de outras questões programáticas, podem explicar a variabilidade nos resultados e limitar a análise do papel dos determinantes biológicos e ambientais sobre a ocorrência das doenças

Maximum number of triangle-free edge colourings with five and six colours

Let k ≥ 3 and r ≥ 2 be natural numbers. For a graph G, let F(G, k, r) denote the number of colourings of the edges of G with colours 1,…, r such that, for every colour c ∈ {1,…, r}, the edges of colour c contain no complete graph on k vertices Kk. Let F(n, k, r) denote the maximum of F(G, k, r) over all graphs G on n vertices. The problem of determining F(n, k, r) was first proposed by Erdős and Rothschild in 1974, and has so far been solved only for r = 2; 3, and a small number of other cases. In this paper we consider the question for the cases k = 3 and r = 5 or r = 6. We almost exactly determine the value F(n, 3, 6) and approximately determine the value F(n, 3, 5) for large values of n. We also characterise all extremal graphs for r = 6 and prove a stability result for r = 5

Avaliacáo da energia gerada por um sistema fotovoltaico de 10 kwp com razáo de concentrado de 1000 sois interligado á rede elétrica

Este trabajo  busca analizar las características de operación  de un  Generador Foto  voltaico  de Alta Concentración (HCPV - High Concentration Photovoltaics) de 10 kWp con una concentración de 1000 soles instalado en el área externa del Departamento de Energía Nuclear de la Universidad Federal de Pemambuco. Después de la instalación del sistema fotovoltaico (FV), fueron colectados en conjunto los datos de la generación y del consumo de energía eléctrica del departamento. Fueron estimados los valores de la irradiancia directa incidente en el plano del generador hora a hora para el día más representativo  de cada mes, utilizando  correlaciones disponibles en  la literatura. A partir de los resultados experimentales y de las simulaciones realizadas fue posible establecer una relación entre la oferta y la demanda de energía, llegando  a la conclusión  que el generador FV, en  las mejores condiciones de funcionamiento, consigue suministrar aproximadamente 14% del consumo eléctrico del departamento, lo que es equivalente al gasto de iluminación de la edificación

Avaliação da energia gerada por um sistema fotovoltaico de 10 kWp com razão de concentração de 1000 sóis interligado à rede elétrica

Este trabajo busca analizar las características de operación de un Generador Fotovoltaico de Alta Concentración (HCPV - High Concentration Photovoltaics) de 10 kWp con una concentración de 1000 soles instalado en el área externa del Departamento de Energía Nuclear de la Universidad Federal de Pernambuco. Después de la instalación del sistema fotovoltaico (FV), fueron colectados en conjunto los datos de la generación y del consumo de energía eléctrica del departamento. Fueron estimados los valores de la irradiancia directa incidente en el plano del generador hora a hora para el día más representativo de cada mes, utilizando correlaciones disponibles en la literatura. A partir de los resultados experimentales y de las simulaciones realizadas fue posible establecer una relación entre la oferta y la demanda de energía, llegando a la conclusión que el generador FV, en las mejores condiciones de funcionamiento, consigue suministrar aproximadamente 14% del consumo eléctrico del departamento, lo que es equivalente al gasto de iluminación de la edificación.This paper analyzes the operational characteristics of a High Concentration Photovoltaic (HCPV) generator of 10 kWp with a concentration ratio of 1000 suns installed on the external area of the Nuclear Energy Department of the Federal University of Pernambuco. The system has been installed and monitored. D.C. power generated, converted A.C. power, solar radiation (direct solar radiation) have been measured. The consumption of electricity was estimated considering all the electric appliances of the department and the time expected for use. Using correlations available in the literature, direct incident irradiance on the plane of the generator were estimate each hour for the most representative day of each month. From the experimental results and the simulations was possible to establish a relationship between supply and demand for energy, concluding that the PV generator in the best operating condition, can reach, in the best situation, approximately 14% of electricity consumption of the department, which is equivalent to the light expense of the building.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Avaliação da energia gerada por um sistema fotovoltaico de 10 kWp com razão de concentração de 1000 sóis interligado à rede elétrica

Este trabajo busca analizar las características de operación de un Generador Fotovoltaico de Alta Concentración (HCPV - High Concentration Photovoltaics) de 10 kWp con una concentración de 1000 soles instalado en el área externa del Departamento de Energía Nuclear de la Universidad Federal de Pernambuco. Después de la instalación del sistema fotovoltaico (FV), fueron colectados en conjunto los datos de la generación y del consumo de energía eléctrica del departamento. Fueron estimados los valores de la irradiancia directa incidente en el plano del generador hora a hora para el día más representativo de cada mes, utilizando correlaciones disponibles en la literatura. A partir de los resultados experimentales y de las simulaciones realizadas fue posible establecer una relación entre la oferta y la demanda de energía, llegando a la conclusión que el generador FV, en las mejores condiciones de funcionamiento, consigue suministrar aproximadamente 14% del consumo eléctrico del departamento, lo que es equivalente al gasto de iluminación de la edificación.This paper analyzes the operational characteristics of a High Concentration Photovoltaic (HCPV) generator of 10 kWp with a concentration ratio of 1000 suns installed on the external area of the Nuclear Energy Department of the Federal University of Pernambuco. The system has been installed and monitored. D.C. power generated, converted A.C. power, solar radiation (direct solar radiation) have been measured. The consumption of electricity was estimated considering all the electric appliances of the department and the time expected for use. Using correlations available in the literature, direct incident irradiance on the plane of the generator were estimate each hour for the most representative day of each month. From the experimental results and the simulations was possible to establish a relationship between supply and demand for energy, concluding that the PV generator in the best operating condition, can reach, in the best situation, approximately 14% of electricity consumption of the department, which is equivalent to the light expense of the building.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES