327,186 research outputs found
Levantamento semidetalhado dos solos do Campo Experimental de Monte Cristo do CPAF-Roraima.
No full textParte de: REGO, R. S.; RODRIGUES, T. E.; GAMA, J. R. N. F.; LIMA, A. A. C.; SILVA, J. M. L. da; BARRETO, W. de O. Caracterização e classificação dos solos do Campo Experimental Monte Cristo, da Embrapa Roraima, Boa Vista - Estado de Roraima. Belém, PA: Embrapa Amazônia Oriental, 2000. 40 p. (Embrapa Amazônia Oriental. Documentos, 58)
Line zonotopes: A tool for state estimation and fault diagnosis of unbounded and descriptor systems
No full textThis paper proposes new methods for set-based state estimation and active fault diagnosis (AFD) of linear descriptor systems (LDS). Unlike intervals, ellipsoids, and zonotopes, constrained zonotopes (CZs) can directly incorporate linear static constraints on state variables – typical of descriptor systems – into their mathematical representation, leading to less conservative enclosures. However, for LDS that are unstable or not fully observable, a bounded representation cannot ensure a valid enclosure of the states over time. To address this limitation, we introduce line zonotopes, a new representation for unbounded sets that retains key properties of CZs, including polynomial time complexity reduction methods, while enabling the description of strips, hyperplanes, and the entire n-dimensional Euclidean space. This extension not only generalizes the use of CZs to unbounded settings but can also enhance set-based estimation and AFD in both stable and unstable scenarios. Additionally, we extend the AFD method for LDS from Rego et al. (2020) to operate over reachable tubes rather than solely on the reachable set at the final time of the considered horizon. This reduces conservatism in input separation and enables more accurate fault diagnosis based on the entire output sequence. The advantages of the proposed methods over existing CZ-based approaches are demonstrated through numerical examples
Mapa de aptidão agrícola das terras do Campo Experimental de Monte Cristo do CPAF-Roraima.
No full textParte de: REGO, R. S.; RODRIGUES, T. E.; GAMA, J. R. N. F.; LIMA, A. A. C.; SILVA, J. M. L. da; BARRETO, W. de O. Caracterização e classificação dos solos do Campo Experimental Monte Cristo, da Embrapa Roraima, Boa Vista - Estado de Roraima. Belém, PA: Embrapa Amazônia Oriental, 2000. 40 p. (Embrapa Amazônia Oriental. Documentos, 58)
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
The organization (Ângkar) as a state of exception: The case of the S-21 extermination camp, Phnom Penh
No full textOrganization theory, Clegg pointed out, has failed to address the role of organizations in some of the crimes of/against humanity, suggesting that more attention should be given to the case of total institutions. With this paper we respond to Clegg's invitation and study the S-21 extermination camp, in Phnom Penh, Cambodia. We do so by engaging with the work of the Italian philosopher Giorgio Agamben, with the aim of investigating the organizational patterns that constitute the camp as a 'State of Exception'. Doing so shows us how organizations can become malign forces for evil. We explore the implications of this case for more general 'Kafkaesque organization', that sometimes reproduce, in more benign forms, many of the practices found at S-21. © 2012 Copyright Taylor and Francis Group, LLC
The lexicon of horse pathologies in Instruçam da Cavallaria de Brida by Antonio Pereyra Rego confronted with the lexicon of its sources
No full text[Resumen] El objetivo de este trabajo consiste en comparar el léxico de las patologías hipiátricas presentes en el manual de albeitería de Antonio Pereyra Rego, de 1679, Instruçam da Cavallaria de Brida: tratado unico, dedicada ao invicto martyr S. Jorge con el léxico presentado en sus fuentes. El autor menciona a muchos de los tratados extranjeros en que se ha basado para redactar este trabajo. La comparación entre el léxico de las patologías de los caballos en portugués, en francés, en italiano y en castellano emergente en las diferentes fuentes apuntadas por Rego nos permite averiguar si la influencia de esos tratados sobre Rego solamente se observa en el dominio conceptual o bien si también se produjo en el dominio terminológico.[Abstract] The aim of this work consists in the comparison between the lexicon of horse pathologies
which is present in the treatise of veterinary medicine, Instruçam da Cavallaria de Brida: tratado
unico, dedicada ao invicto martyr S. Jorge, by Antonio Pereyra Rego, published in 1679, and the
lexicon which is present in the sources of this book. The author mentions many foreign treatises in
which he had based the redaction of this work. The comparison between the lexicon of horse diseases
in Portuguese, in French and in Spanish, which emerges in the several sources that are mentioned by
Rego, allows us to investigate if the influence of those treatises on Rego is only observable in a conceptual
domain or if it also produced results in the terminological field
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
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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