133,455 research outputs found
Collages and photomontages in architectural representation. The photographic works of Teófilo Rego
No full textGraphically manipulated photographs were frequently used to illustrate the impact of the projected building on the existing cityscape or landscape, in particular, in those cases, where the projects had a monumental scale. We discouvered two sorts of documents at Teófilo Rego Archive: on the one hand, the collages and photomontages made by architects and photographed by Teófilo Rego; on the other hand, collages and photomontages made by Teófilo Rego at the commission of architects, a work whose depth seems to indicate the collaboration, a free, curious and imaginative spirit of research and the deepening of the formal and expressive hypothesis proportionated by the commission. In the second group are included the photographs of four projects of the International Competition for the monument to the Infante D. Henrique in Sagres, 1954/1957. The photomontages and collages contained in the specification and in the draft’s process submitted by João Andresen, and the photomontages of the projects by Nadir Afonso and Manuel da Silva Passos Junior must have been a form of project impact statement from their authors, and certainly represent a period of great creativity as concerns Teófilo Rego. All photomontages by Teófilo Rego are constructed images, the result of a rational being, but are also emotional. As his gaze approaches the models, the images become abstract, and deviate from a possible illusion of reality. Whereas the compositions on the territory and the monument demanded a certain expressive naturalism more than realism, it is the geometric abstraction of architectural form that prevails in the close-ups.This text was co-funded with FEDER funds by the Operational Competitiveness Programme – COMPETE and national funds by FCT – Fundação para a Ciência e
Tecnologia within the project Photography, Modern Architecture and the “School of Oporto”: Interpretations Around Teófilo Rego Archive (PTDC/ ATP-AQI/4805/2012 -
FCOMP-01-0124-FEDER-028054
Jet-installation noise and near-field characteristics of jet-surface interaction
No full textThe link between jet-installation noise and the near-field flow features of the corresponding isolated jet is studied by means of lattice-Boltzmann numerical simulations. The computational set-up consists of a flat plate placed in proximity to a jet, replicating the interaction benchmark study carried out at NASA Glenn. Installation effects cause low-frequency noise increase with respect to the isolated case, mainly occurring in the direction normal to the plate and upstream of the jet's exit plane. It is shown that the Helmholtz number, based on the wavelength of eddies in the mixing layer and their distance to the plate trailing edge, predicts the frequency range where installation noise occurs. Based on the isolated jet near field, scaling laws are also found for the far-field noise produced by different plate geometries. The linear hydrodynamic field of the isolated jet shows an exponential decay of pressure fluctuations in the radial direction; it is shown that the far-field spectrum follows the same trend when moving the plate in this direction. In the axial direction, spectral proper orthogonal decomposition is applied to filter out jet acoustic waves. The resultant hydrodynamic pressure fluctuations display a wavepacket behaviour, which can be fitted with a Gaussian envelope. It is found that installation noise for different plate lengths is proportional to the amplitude of the Gaussian curve at the position of the plate trailing edge. These analyses show that trends of jet-installation noise can be predicted by analysing the near field of the isolated case, reducing the need for extensive parametric investigations.Wind Energ
A sombra do arquitecto, da colaboração entre João Andresen e Teófilo Rego
No full textDo levantamento do espólio do fotógrafo Teófilo Rego podemos concluir que dos vários profissionais da “Escola do Porto” com quem colaborou intensivamente entre as décadas de 1940 e 1960, a figura que mais se destaca é sem dúvida a do arquitecto João Andresen (1920/67).
Como nenhum outro, o lote das imagens da obra deste autor revela de facto, pela quantidade e diversidade do material fotográfico, uma colaboração regular, sem igual, que abrange um número considerável dos seus trabalhos, desde o projecto que apresenta ao concurso para o Monumento ao Infante D. Henrique (1954/56) ao Plano de Desenvolvimento Turístico dos Reis Magos na ilha da Madeira (1964).
A comunicação passa em revista as diversas reportagens que Rego realizou das obras e projectos de Andresen, aborda as histórias, as razões e os motivos que estão na sua origem, demonstrando como desde cedo a fotografia constituiu para os profissionais portugueses um instrumento imprescindível tanto na elaboração de arquivos de memória pessoal como na divulgação e apresentação dos seus trabalhos em concursos, exposições e revistas, ou ainda como meio de comunicação e suporte das ideias que pretendiam afirmar.Este texto foi co-financiado pela Fundação para a Ciência e a Tecnologia I.P. (PIDDAC) e pelo Fundo Europeu de Desenvolvimento Regional – FEDER, através do COMPETE – Programa Operacional Fatores de Competitividade (POFC), no âmbito do projecto "Fotografia, Arquitectura Moderna e a «Escola do Porto»: Interpretações em torno do Arquivo Teófilo Rego" (PTDC/ATP-AQI/4805/2012
Free-Stream Effects on Jet-Installation Noise of a Dual-Stream Engine
No full textAn investigation of the effects of free-stream on jet-installation noise is performed using a numerical solver based on the lattice-Boltzmann method. In order to simulate a realistic configuration, a high-lift wing comprised by a main element and a deployed flap (MD30P30N) is placed in the vicinity of a dual-stream engine (GE90-94B). The engine operating parameters are used as inputs to generate realistic exhaust flows. Far-field noise spectra from the isolated and installed jets, obtained through the Ffowcs-Williams and Hawkings analogy, are compared for different polar angles. In the absence of free-stream, the results show a low-frequency noise amplification, occurring mainly upstream of the jet axis. This noise increase is due to a dipole source at the flap trailing-edge, where hydrodynamic waves from the jet scatter as sound to the far-field. With free-stream, the wing produces a downward flow, which deflects the jet plume. There is a consequent change on the shear layer turbulence characteristics, which is responsible for altering the far-field spectral shape and directivity pattern of the overall configuration. Through a wavelet decomposition of the near-pressure field, coherent and chaotic fluctuations are splitted. Near-field spectra show the change in amplitude of fluctuations of coherent structures due to free-stream, which are in agreement with the farfield results.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Wind Energ
Centroctenus varzea Brescovit & Torres & Rego & Polotow 2020, sp. nov.
No full textCentroctenus varzea sp. nov. Figures 9–11, 12C Type material. Male holotype from Nossa Senhora de Fátima (2°46’55”S, 57°55’01”W), Ilha Grande Cucuiari, Urucurituba, Amazonas, Brazil, 04.XI.2003, F. Rego & C. A. Rheims coll., sample A698 (IBSP 162675). Paratypes: 1 female from Vila do Jacaré (3°37’41”S, 60°50’28”W), Paranã do Jacaré, Manacapuru, 29.IX.2003, F. Rego & E. Venticinque coll., sample A128 (MPEG 1187); 1 male and 2 females from Nossa Senhora de Fátima (2°46’55”S, 57°55’01”W), Ilha Grande Cucuiari, Urucurituba, 4.XI.2003, F. Rego & C. A. Rheims coll., sample A594 (MPEG 1182), 1 male, ditto, sample A600 (MPEG 1186), 1 male from Nossa Senhora do Perpétuo Socorro (3°09’14”S, 59°19’26”W), Matinha, Itacoatiara, 7.XI.2003, F. Rego & C. A. Rheims coll., sample A57 (IBSP 162627); 1 female from Recreio (2°04’34”S, 55°57’58”W), Malagueta, Juruti, Pará, 30.X.2003, F. Rego & C. A. Rheims coll., sample A663 (IBSP 162671), all from Brazil. Additional material examined. BRAZIL: Amazonas. Tabatinga, Terra Firme Palmares, Palmares (4°00’50”S, 69°27’50”W), 11.IX.2003, sample A221, 1 female (IBSP 162641); Santo Antônio do Içá, Lago Chicotuba / Paranã Canini, Presidente Vargas (3°10’23”S, 68°01’52”W), 15.IX.2003, sample A225, 1 male (IBSP 162642); Tefé, Guariba-Solimões, São João do Catuá (3°39’50”S, 64°10’12”W), 22.IX.2003, samples A319, A338, A369, A311, A175; 4 males, 3 females (MPEG 1178; IBSP 162640; 162648; 162649; 162651); Tefé, Lago do Jacaré, São Francisco do Capivara (3°15’36”S, 64°37’41”W), 21.IX.2003, sample A262, A317, A344; 2 males, 2 females (MPEG 1183; IBSP 162645; 162650); Codajás, Lago Cuxuara, Urucurizinho (3°58’19”S, 61°57’36”W), 26.IX.2003, sample A111, A136, A151, A161; 5 females (MPEG 1185; IBSP 162631; IBSP 162634; IBSP 162639); Manacapuru, Paranã do Jacaré, Vila do Jacaré (3°37’41”S, 60°50’28”W), 29.IX.2003, sample A112, A137; 3 males, 2 females (IBSP 162632; 162635), all collected by F. Rego & E. Venticinque; Itacoatiara, Matinha, Nossa Senhora do Perpétuo Socorro (3°09’14”S, 59°19’26”W), 07.XI.2003, sample A85, A96; 4 females (MPEG 1180; IBSP 162630); Itacoatiara, Trindade, São José (3°18’32”S, 58°42’36”W), 6.XI.2003, samples A63, A92; 4 females (IBSP 162628; IBSP 162629); Urucurituba, Ilha Grande Cucuiari, Nossa Senhora de Fátima (2°46’55”S, 57°55’01”W), 4.XI.2003, 6 males, 8 females, samples A607, A646, A715, A744, A641, A612, A628, A604, A681, A593, A600 (MPEG 1184; 1186; IBSP 162673 [automontage]; 162659; 162660; 162661; 162663; 162667; 162669; 162676; 162678); Parintins, Ilha do Meio, Menino Deus (2°31’19”S, 56°31’44”W), 1.XI.2003, sample A654, A723; 2 females (IBSP 162670; 162677), all collected by F. Rego & C. A. Rheims; Pará. Almeirim, Munguba, Arumanduba (1°28’48”S, 52°26’31”W), 1 male, 1 female, 20.X.2003 sample A519 (IBSP 162655); Gurupá, Furinho, São José (1°12’14”S, 51°49’05”W), 1 female, 18.X.2003, sample A566 (IBSP 162658); Juruti, Malagueta, Recreio (2°04’34”S, 55°57’58”W), 30.X.2003, samples A666, A616, A663; 3 females (IBSP 162662; 162671; 162672), all collected by F. Rego & C. A. Rheims. Etymology. Várzea is a Portuguese noun for freshwater swamp forest or flooded forest. The Amazon River Basin and its tributaries are characterized by extensive forested areas that become flooded every rainy season, where specimens listed above have been collected. Diagnosis. Males of Centroctenus varzea sp. n. resemble those of C. acara (Brescovit 1996: figs 25–26) by the size and position of median apophysis, but can be distinguished by median apophysis curved at tip, non-sinuous embolus, cymbium basally narrow, and by the large tip of the RTA (Fig. 9A). Females of Centroctenus varzea sp. n. resemble those of C. acara (Brescovit 1996: fig 27) by the lateral lobes conic, but can be distinguished by the lateral lobes projected posteriorly and the subquadrangular median sector of the epigynum (Fig. 9B). Description. Male (holotype). Carapace reddish brown, with a subpentagonal white setae area around the fovea, in the cephalic area, lateral areas and in both sides of the median eyes; the remaining carapace is covered by black setae; chelicerae dark reddish brown, covered with white setae prolaterally; palp, legs and sternum light reddish brown, covered with short black setae; legs also covered with short and long white setae; abdomen yellow dorsally and laterally, covered by short black and white setae and elongated white setae; venter of abdomen black, covered with black setae and with white setae in the central area (Fig. 11A, B, E). Total length 16.7. Carapace 9.10 long and 7.2 wide. Clypeus 0.37 high. Eye diameters: AME 0.35, ALE 0.25, PME 0.4, PLE 0.45. Chelicerae with 3 promarginal teeth, median larger; 4 retromarginal teeth, basal small; with intermarginal denticles. Leg measurements: I: femur 7.9/ patella 3.6/ tibia 7.3/ metatarsus 6.8/ tarsus 2.3/ total 27.9; II: 7.5/ 3.5/ 6.4/ 6.25/ 2.2/ 25.85; III: 6.1/ 2.9/ 5.10/ 5.50/ 1.8/ 21.4; IV: 8.7/ 3.25/ 7.3/ 9.3/ 2.5/ 31.05. Leg formula 4123. Leg spination: tibia I v2-2-2-2-2, r1-1-0, p1-1-0, II v2-2-2-2-2, r1-1-0, p1-1-0, III v2-2-2, r1-1-0, p1-1-0, VI v2-2-2, r1-1-0, p1-1-0; metatarsus I v2- 2-2, r1-1-1, p1-1-0, II v2-2-2, r1-1-1, p-1-1-0, III v2-2-2, r1-1-1, p1-1-1, VI, v2-1-1-1-2, r1-1-1, p1-1-1; metatarsus IV unmodified. Palp (Fig. 9A): tibia as long as cymbium; RTA close to tibial apex, elongated, cylindrical proximally and laminar and wide distally; cymbium elongate, with basal excavation; tegulum not projected; embolus with large base, with retrolateral basal projection and cylindrical distally; median apophysis cup-shaped and short; conductor hyaline, round and laminar. Female (paratype, MPEG 1187) . Coloration as described in male, excepted by the venter of the abdomen entirely yellow, covered by short black and white setae and elongated white setae (Fig. 11C, D, F). Total length 22.0. Carapace 9.7 long and 7.2 wide. Clypeus 0.42 high. Eye diameters: AME 0.37, ALE 0.25, PME 0.42, PLE 0.42. Chelicerae with 3 promarginal teeth, median larger; 4 retromarginal teeth, with same size, and 2 small proximal teeth; with intermarginal denticles (Fig. 10D). Leg measurements: I: femur 6.6/ patella 3.7/ tibia 5.9/ metatarsus 5.5/ tarsus 1.8/ total 23.5; II: 6.5/ 3.7/ 5.5/ 5.1/ 1.8/ 22.6; III: 5.6/ 3.0/ 4.2/ 4.8/ 1.7/ 19.3; IV: 7.2/ 3.3/ 6.2/ 8.0/ 2.1/ 26.8. Leg formula 4123. Leg spination: tibia I-II v2-2-2-2-2, r0, p0, III v2-2-2, r1-1-0, p1-1-0; metatarsus I-II v2-2-2, r0, p0, III v2-2-2, r1-1-1, p1-1-1; IV v1-1-1-1-2, p1-1-1, r0-1-1. Tarsal trichobothria hood with transversal ridges (Fig. 10E). Capsulate tarsal organ with oval aperture (Fig. 10F). Female genitalia (Figs 9B, C, 10 A–C): median sector of epigynum subquadrangular, with a pair of excavations anteriorly; lateral lobes elongated, pointed posteriorly; copulatory ducts sinuous; head of spermathecae small, with large pores, and base of spermathecae round; short fertilization ducts. Variation. Males (n=10): total length: 15.8–16.9; carapace length: 8.8–9.4; femur I length: 7.5–8.1. Females (n=10): total length: 21.2–23.9; carapace length: 9.2–10.6; femur I length: 5.1–6.9. Natural history. Centroctenus varzea sp. n. is one of the most abundant spiders in the flooded forests (várzea) of the Amazon River (Rego et al. 2009). Eighty-nine specimens were collected in samples scattered approximately 3,000 km along the river, at both margins and at the end of the flood season (from September to early November/2003). C. varzea sp. n. is a nocturnal wandering spider, found foraging at the leaf litter near rivers, lakes and streams. Few specimens were collected at night on beaches and ravines, and three individuals (less than 4% of the total) were caught during the daylight on shrubs and bare soil in non-flooded forest (terra-firme). The high abundance of juveniles and adults even in wet soil after flooding suggests that C. varzea sp. n. returns to flooded forests as the water descends into the Amazon River and its tributaries. Distribution. North of Brazil in the Amazon River basin (Fig. 12C).Published as part of Brescovit, Antonio D., Torres, Richard A., Rego, Felipe N. A. A. & Polotow, Daniele, 2020, Six new species of the spider genus Centroctenus Mello-Leitão from the Neotropical region (Ctenidae, Cteninae), pp. 311-328 in Zootaxa 4877 (2) on pages 322-327, DOI: 10.11646/zootaxa.4877.2.5, http://zenodo.org/record/442423
Functional annotation of DElncRNAs in SR+Rego cells.
No full textGREAT computes all GO term enrichment for genes upstream and downstream of TSS based on the genomic regions of DElncRNAs commonly expressed in SR+Rego cells. Distance (kb) to the nearest transcriptional start site (TSS) and Absolute distance to DElncRNAs and TSS sites of up- (A) and downregulated(B) lncRNAs in SR+Rego cells. Functional annotation analysis of up- (C) and downregulated (D) DElncRNAs using GREAT shows for the top 5 GO terms in BP (top panel), CC (middle panel), and MF (bottom panel). (TIFF)</p
Applications of the Multilayer Porous Medium Modeling Approach for Noise Mitigation
No full textPorous materials have been widely investigated as a mean for noise reduction. Numerical simulations can be used to investigate the physical mechanisms responsible for noise reduction; however, a correct modeling of the porous medium through an equivalent fluid model is essential to minimize the computational costs. This paper reports a detailed review of a few applications of the equivalent fluid model based on a three-layer approach, a method that is particularly useful to account for the variation of porous material thickness in aerospace applications. The multilayer approach has been applied in three relevant aerodynamic noise issues: leading-edge impingement noise, turbulent boundary-layer trailing-edge noise, and jet installation noise. Comparison with experiments is used to validate the simulation approach. Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Wind Energ
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Jose Lins do Rego - from learner to writer: the didactic communication as edition phenomena
No full textO estudo consiste na análise do percurso de aprendizagem do autor José Lins do
Rego, desde o momento de seu primeiro contato com as letras até o seu fazer-se
escritor, transformando-se em um fenômeno de edição. Para tanto, problematizei as
diferentes práticas de leituras registradas pelo autor, compreendendo, em primeiro
lugar, a leitura do que denominei de textos vividos, isto é as rememorações da
escuta das falas e da literatura oral, ouvidas por José Lins do Rego na infância.
Analiso, aqui, a relação intrínseca entre a poética da oralidade, a memória e a
escrita. Em segundo lugar, examinei a leitura do verbal escrito registrado pelo autor,
em Doidinho. O narrador lembra o uso que fez dos manuais escolares (destaque
aos Livros de Leitura de Felisberto Rodrigues Pereira de Carvalho e Coração de
Edmond D Amici) e de outros textos como as narrativas de Carlos Magno e os 12
pares de França, no momento em que freqüentou o INSC, em Itabaiana. Investigo
os diferentes usos e as diferentes interpretações do manual - escolar como difusor
de projetos políticos e de ideologias formadoras do modo de vida de seus usuários
e dos que os circundam. Essas leituras, assim como a escuta apontada pelo
narrador, estabelecem o lugar da memória. Procuro, também, acompanhar a voz na
escrita , ou seja, busco com isso o lugar da memória que se transformou em
escritura: é o fazer-se escritor de José Lins do Rego. Investigando nessa mesma
direção trago a produção de José Lins do Rego em múltiplas mídias. Discuto assim,
o fazer do livro, a relação editor autor. E para finalizar, retorno ao universo
escolar para investigar o texto do autor sendo aplicado na escola, como exemplo
encontrei a Cartilha Literária José Lins do Rego. Como sustentação teórica para a
discussão sobre memória, escrita e oralidade recorri a autores como Jerusa Pires
Ferreira, Paul Zumthor, Maurice Halbwachs e Iuri Lotman. Para trabalhar com a
narrativa e os diferentes gêneros do discurso, utilizei Mikhail Bakhtin e os trabalhos
de Jacques Migozzi, Jean-Yves Mollier, Jean-Claude Vareille. E, para estudar a
relação autor editor, me servi de autores como Circe M . F. Bittencourt e Roger
ChartierThe study consists in the analysis of the learning course of the author José Lins
do Rego, from the moment of his first contact with literature to making himself a
writer, turning [himself] into an edition phenomenon. Hence I analyzed the
different reading practices registered by the author, comprehending, at first, the
reading of what I denominated lived texts, that is, the remembrance of listening
the speeches and oral literature heard by José Lins do Rego in his childhood. I
analyze, here, the intrinsic relationship among the orally poetics, memory and
writing. In second, I examined the reading of the written verbal registered by the
author, in Doidinho. The narrator remembers the utilization he made of the
school manuals (highlight to Livros de Leitura by Felisberto Rodrigues Pereira de
Carvalho and Cuore by Edmond D Amici) and of other texts as the Carlos
Magno and the 12 pairs from French at the time he attended the INSC in
Itabaiana. I investigated the diverse uses and the different interpretations of the
school - manual as a disseminator of political projects and of the users and those
surrounding them lifestyles constituting ideologies. Those readings, as the
listening pointed by the narrator, establish the place of the memory. I also aim at
accompany the voice in the writing, that is, I seek by that the memory place that
became writing: it s the turning itself into writer of José Lins do Rego.
Investigating in the same direction I bring the production of José Lins do Rego in
multiple media. I therefore discuss the making of the book, the relationship editor
- author. To finish, I return to the school universe to investigate the author s text
being applied in school, and as example I found the Cartilha Literária José Lins
do Rego. As theoretical underpinning to the discussion about memory, writing
and orally I have called forth to authors as Jerusa Pires Ferreira, Paul Zumthor,
Maurice Halbwachs e Iuri Lotman. To deal with the narrative and the different
genres of discourse, I made use of Mikhail Bakhtin and the works of Jacques
Migozzi, Jean-Yves Mollier, and Jean-Claude Vareille. And, to study the author -
editor relationship, I employed authors as Circe M. F. Bittencourt e Roger
ChartierConselho Nacional de Desenvolvimento Científico e Tecnológic
Os media em António Rego
No full textO livro é um diálogo de António Rego com Paulo Rocha, com aquele a fazer uma revisão de cinquenta anos de sacerdócio (ordenado padre em 1964). Nascido nos Açores, cedo veio para Lisboa, onde entrou na Rádio Renascença, em 1968, e esteve sete anos. Nessa altura, a estação era frágil do ponto de vista de emissores. A onda média tinha potência limitada mas a rede de FM era nova. As emissões religiosas consistiam numa oração da manhã e um meditação, além da transmissão da Eucaristia dominical e d..
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