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Literatura académica sobre el tema "Orcas"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 26 de enero de 2023

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Artículos de revistas sobre el tema "Orcas"

Santos Decanini Marangoni, Isadora y Luís Gustavo Da Conceição Galego. "Representações cinematográficas das orcas". Revista Thema 21, n.º 1 (26 de abril de 2022): 303–22. http://dx.doi.org/10.15536/thema.v21.2022.303-322.2501.

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O cinema pode criar perspectivas acerca dos temas que retrata, o que inclui abordagens fílmicas voltadas para diferentes espécies de organismos, como ocorre no caso de diferentes animais marinhos. Nesse sentido, este trabalho analisou a construção das representações cinematográficas sobre as orcas (Orcinus orca) e seus possíveis desdobramentos no imaginário popular, além de discutir o seu impacto sobre a manutenção e manejo desses animais em cativeiro e apresentar uma proposta didática na perspectiva da Educação Ambiental que utilize esses filmes. Para isto, foram selecionadas cenas de três filmes nos quais as orcas são protagonistas e as narrativas e cinematografia foram analisadas na perspectiva da construção de personagem e das informações biológicas veiculadas. Nesse sentido, houve uma mudança na forma que as orcas eram representadas, outrora apresentadas como assassinas vingadoras e mais recentemente como animais afetivos, o que as torna mais suscetíveis para a sua utilização em espetáculos aquáticos e, com isso, maior probabilidade de um manejo inadequado. A partir dessa análise, foi possível propor uma ação didática com a utilização desses longas-metragens voltada para o conhecimento sobre esses cetáceos e para a reflexão sobre sua conservação e não-manutenção em cativeiro. Palavras-chave: Orca, a baleia assassina; Free Willy; Blackfish; espécies-bandeira.

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Reckendorf, A., E. Ludes-Wehrmeister, P. Wohlsein, R. Tiedemann, U. Siebert y K. Lehnert. "First record of Halocercus sp. (Pseudaliidae) lungworm infections in two stranded neonatal orcas (Orcinus orca)". Parasitology 145, n.º 12 (25 de abril de 2018): 1553–57. http://dx.doi.org/10.1017/s0031182018000586.

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AbstractOrca (Orcinus orca) strandings are rare and post-mortem examinations on fresh individuals are scarce. Thus, little is known about their parasitological fauna, prevalence of infections, associated pathology and the impact on their health. During post-mortem examinations of two male neonatal orcas stranded in Germany and Norway, lungworm infections were found within the bronchi of both individuals. The nematodes were identified as Halocercus sp. (Pseudaliidae), which have been described in the respiratory tract of multiple odontocete species, but not yet in orcas. The life cycle and transmission pathways of some pseudaliid nematodes are incompletely understood. Lungworm infections in neonatal cetaceans are an unusual finding and thus seem to be an indicator for direct mother-to-calf transmission (transplacental or transmammary) of Halocercus sp. nematodes in orcas.

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Colby, Jason. "The Whale and the Region: Orca Capture and Environmentalism in the New Pacific Northwest". Journal of the Canadian Historical Association 24, n.º 2 (15 de mayo de 2014): 425–54. http://dx.doi.org/10.7202/1025084ar.

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Although the orca is today widely recognized as a cultural and ecological icon of the Pacific Northwest, historians have ignored the impact of killer whale capture on the development of the region’s environmental values and identity. Between 1964 and 1976, the waters in southern British Columbia and Washington State were the world’s principal source of captive killer whales. The display of orcas by the region’s aquariums transformed human perceptions of this marine predator, and soon aquariums around the world were placing orders for Pacific Northwest killer whales. Yet the expanding capture and export of orcas in the late 1960s and early 1970s raised troubling ecological and moral questions for the region’s human residents. In the context of shifting attitudes toward cetaceans and rising environmental awareness throughout North America, Pacific Northwesters on both sides of the border increasingly viewed orcas as symbols of their region’s shared ecological concerns. The transnational nature of the region’s killer whale pods helped spur not only ecological reflection but also transborder cooperation among activists, scientists, and government officials to study and eventually protect the species. In the process, the shifting human relations with orcas helped redefine the Pacific Northwest.

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Jett, John, Ingrid N. Visser, Jeffrey Ventre, Jordan Waltz y Carolina Loch. "Tooth damage in captive orcas ( Orcinus orca )". Archives of Oral Biology 84 (diciembre de 2017): 151–60. http://dx.doi.org/10.1016/j.archoralbio.2017.09.031.

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Sánchez–Hernández, Paula, Anastasia Krasheninnikova, Javier Almunia y Miguel Molina–Borja. "Social interaction analysis in captive orcas ( Orcinus orca )". Zoo Biology 38, n.º 4 (18 de junio de 2019): 323–33. http://dx.doi.org/10.1002/zoo.21502.

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Norton, Robert A., Jacqueline King y Gary A. Moulton. "‘Orcas’ Pear". HortScience 23, n.º 6 (diciembre de 1988): 1090. http://dx.doi.org/10.21273/hortsci.23.6.1090.

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Abstract ‘Orcas’ is a fall pear (Pyrus communis L.) with size and flavor characteristics that make it suitable for use in home canning and drying and for fresh eating in season. In observations since 1971, trees and fruit of this cultivar appear to show good resistance to pear scab (Venturia pyrina).

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McMillan, Alan D. "Non-Human Whalers in Nuu-chah-nulth Art and Ritual: Reappraising Orca in Archaeological Context". Cambridge Archaeological Journal 29, n.º 2 (4 de febrero de 2019): 309–26. http://dx.doi.org/10.1017/s0959774318000549.

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Whaling was a central aspect of Nuu-chah-nulth, Ditidaht and Makah culture on the northwest coast of North America. Not only was it economically important, it was vital to chiefly prestige. Art and ceremonial life were dominated by themes related to whaling. Thunderbird, the great supernatural whaler, was the source of hereditary prerogatives held by chiefs, including names, dances, regalia and rights to display images of thunderbird and whale. This paper argues that human observations of predatory behaviour by orcas (or killer whales) led to these animals also being perceived as non-human whalers from which chiefly prerogatives could be obtained. Wolves, the main figures in Nuu-chah-nulth ceremonial life, had the power to transform into orcas, explaining their frequent presence in the art with thunderbirds and whales. This paper presents archaeological evidence for orca in the context of whaling and offers interpretations based on the extensive ethnographic and oral historical records. It also places perceptions of animals, the role of the hunter's wife and beliefs about orca in a broader context involving hunting societies in northwestern North America.

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Martins, Germânio Buenos Aires, Manoel Cícero Ribeiro Júnior, José Geovânio Buenos Aires Martins y Luciano Silva Figueiredo. "Farol das Orcas". Cadernos do PET Filosofia 10, n.º 19 (7 de agosto de 2020): 70–72. http://dx.doi.org/10.26694/cadpetfil.v10i19.10254.

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Garshelis, D. L. "Otter-Eating Orcas". Science 283, n.º 5399 (8 de enero de 1999): 175d—175. http://dx.doi.org/10.1126/science.283.5399.175d.

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Tesis sobre el tema "Orcas"

CHARLES, William Dantas. "Interações entre orcas Orcinus orca (Linnaeus, 1758) e falsas orcas Pseudorca crassidens (Owen, 1846) com a pesca de espinhel pelágico monofilamento no Atlântico Oeste Tropical". Universidade Federal Rural de Pernambuco, 2007. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6544.

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Submitted by (edna.saturno@ufrpe.br) on 2017-02-23T12:25:14Z No. of bitstreams: 1 Williams Dantas Charles.pdf: 2829415 bytes, checksum: bf5d0ed2319bb047d509bf6837ebad7e (MD5)
Made available in DSpace on 2017-02-23T12:25:14Z (GMT). No. of bitstreams: 1 Williams Dantas Charles.pdf: 2829415 bytes, checksum: bf5d0ed2319bb047d509bf6837ebad7e (MD5) Previous issue date: 2007-02-15
Since 50`s, industrial fisheries have been damaged by cetaceans in all oceans, with different intensity levels. According to specialists, this behavior is named depredation, which occurs when the animals eat the fishes caught by a fishing gear. Killer whale has been cited as an animal that shows this kind of behavior often, otherwise other species as a false killer whale or sperm whale have been recorded doing fishing gear interactions. After the creation of the On Board Observers Program (PROBORDO) it was possible to cover all tuna fleet working in northeast of Brazil, based on Natal-RN, Cabedelo-PB and Recife-PE ports. The covering was made by board observers that get important information to the fisheries dynamic knowledge made by pelagic long line. Interactions between false killer whales and killer whales are cited as an important scientific subject, in relation to these fisheries type, that the present study pretends to show up. Factors like interactions type, groups’ size, qualitative and quantitative descriptions of depredated fishes and spatial location of the interactions were analyzed. The false killer whale showed greater occurrence on the study area than other species, generally within groups of few individuals, however, there were situations that the group was composed by hundreds of individuals. This species showed food preference about the target species of this fisheries kind, in other words, tuna and swordfishes instead of others catched, but in case of low productivity, they feed with squid used as a bait on the hooks. Killer whales were observed in the Tropical Western Atlantic, interacting with the fisheries. Also, there were accidental catches of the cited cetaceans by the fishing gear, what can bring serious damage to the individuals caughted.
Desde a década de 50, a indústria pesqueira vem sofrendo perdas provocadas por cetáceos, em todos os oceanos, com diferentes níveis de intensidade, num comportamento denominado pelos especialistas como depredação, que ocorre quando esses animais se alimentam do peixe capturado pela arte de pesca. Orcas verdadeiras têm sido citadas como as que exibem esse comportamento com maior freqüência, porém outras espécies como as falsas orcas e cachalotes, são registradas interagindo com a pesca. Com a criação do Programa de Observadores de Bordo (PROBORDO) foi possível a cobertura de toda a frota atuneira arrendada que opera no nordeste, sediada nos portos de Natal-RN, Cabedelo-PB e Recife-PE por observadores de bordo, que coletam informações relevantes para o conhecimento da dinâmica da pesca realizada com espinhel pelágico monofilamento. Dentre os assuntos de grande valor científico cita-se a ocorrência de interações entre as falsas orcas e as orcas verdadeiras, com esse tipo de pescaria, que o presente trabalho pretende apresentar. Fatores como o tipo de interação, tamanho de grupo, descrição quali-quantitativa dos peixes depredados e localização espacial das interações, foram analisados. A falsa orca apresentou maior ocorrência na área de estudo, geralmente em grupos de poucos indivíduos, porém houve situações em que o grupo era composto por centenas de espécimens. Elas demonstraram preferência alimentar pelas espécies-alvo deste tipo de pescaria, ou seja, atuns e espadartes em detrimento da fauna acompanhante, mas no caso de produtividade baixa, também se alimentavam das lulas, utilizadas nos anzóis como isca. Orcas verdadeiras também foram observadas na região do Atlântico oeste tropical, interagindo com a pesca. Também houveram capturas dos referidos cetáceos pelo espinhel, o que pode causar danos sérios aos espécimens capturados.

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Adimey, Nicole Marie. "A Descriptive Study of the Percussive Behavior of Orcas, Orcinus orca, in Johnstone Strait, British Colombia". NSUWorks, 1995. http://nsuworks.nova.edu/occ_stuetd/348.

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Orcas, Orcinus orca, also known as "killer whales," are a species that have been the subject of long-term research. The aim of this study was to quantify percussive behaviors of a population of orcas, identify which individuals in a pod were displaying such behaviors, determine the context in which these behaviors occurred, and offer suggestions to the purpose, if any, that percussive activity may serve in this community. The study was conducted in Johnstone Strait, British Columbia, Canada during the summer months of 1992-1993. Observations were made during daylight hours. Whales were encountered either opportunistically, or by reports from other whale-watchers and researchers. A total of 542 hours of observational data were collected from 86 individual whales. Behavioral categories were defined as feeding, socializing, traveling, and resting. The most often observed percussive behaviors were tailslaps; they were therefore analyzed in the greatest detail. The number of tail slaps produced during feeding, socializing, aggregation, directional changes, and in the presence of boats were statistically compared. It has been suggested that calves and juveniles engage in percussive activity as a form of play during socializing, and that percussive behavior may aid in building physical strength and motor training. Adolescents and adults may engage in percussive actions to convey information about a direction change to other animals, strengthen social ties, express sociosexual behavior, and assist in social development, all of which could establish and strengthen social skills and social bonds among other individuals in the community. Other hypotheses for percussive behavior in this community include: forms of aggression; a type of warning signal; incidental occurrences due to elevated activity levels; a form of greeting among individuals; an expression of courtship behavior; a way to establish or re-establish dominant-subordinate relationships; an aid in the capture of prey during feeding; and a type of energy release either before or after resting behavior. It appears that each age class may have its own agenda for displaying percussive activity, depending on the context in which it was performed. The reason why each individual engages in percussive actions may be multifaceted for various situations, and each reason may not be bound to a particular context. The high level of occurrence of percussive behaviors implies that they are relevant to the daily activities of the northern resident community of orcas that inhabit the region of Johnstone Strait, British Columbia, Canada.

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Úbeda, Arias Yulán. "Personalidad, bienestar y psicopatología en chimpancés y orcas. Una perspectiva evolutiva y comparada". Doctoral thesis, Universitat de Girona, 2020. http://hdl.handle.net/10803/671406.

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The rating method is based on raters’ assessment on animal behavior by using descriptive items on a questionnaire. Some psychometric and pragmatic aspects have been translated into a fact that a great number of authors choose the rating method for assessing any animal behavior that could be represented by descriptive items. In this thesis, some psychological constructs are evaluated by using the rating method in a variable number of chimpanzees and killer whales housed in captivity. In chimpanzees, personality and psychopathology were evaluated, while in orcas, personality, welfare and subjective well-being (or happiness)
La metodología rating se basa en los juicios de una serie de evaluadores respecto al comportamiento de los animales de estudio, usando para ello listas de ítems descriptivos recogidos en un cuestionario. Una serie de argumentos psicométricos y pragmáticos se han traducido en que un gran número de autores elijan el método rating para evaluar comportamientos en animales que pueden ser representados mediante ítems descriptivos. En la presente Tesis se evalúan una serie de constructos psicológicos mediante metodología rating en un número variable de chimpancés y orcas alojados en cautividad. En el caso de los chimpancés se evaluaron personalidad y psicopatologías, mientras que en el caso de las orcas personalidad, bienestar y bienestar subjetivo (o felicidad)

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Kaczmarek, Krzysztof. "ORCA : towards an integrated noise-free quantum memory". Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:1b4c7463-6181-4689-87d8-5988d4c5bc48.

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Light is an ideal information carrier for quantum networks: its quantum properties are not degraded by noise in ambient conditions and it has a large information capacity owing to its high bandwidth. However, quantum technologies based on photonic networks have been hampered by the exponentially poor scaling of the underlying probabilistic quantum operations. Quantum optical memories, devices that store, manipulate, and release on- demand quantum light, have been identified as an indispensable network component, because they facilitate scalability. Noise-free operation of the memory is critical, since even small additional noise can render the memory classical by destroying the quantum character of the light. Here I introduce a new broadband quantum memory protocol - the off-resonant cas- caded absorption (ORCA) memory - that is inherently noise-free and operates in ambient conditions. I model ORCA theoretically, after which I characterise the classical perfor- mance of a proof-of-concept implementation in warm caesium vapour, using weak near- infrared coherent states. In order to verify quantum operation of the ORCA memory, I interface it with a broadband heralded single-photon source. I measure and compare the quantum statistics of the stored and retrieved light, observing for the first time their full preservation in a room-temperature atomic quantum memory. Finally, I make headway into integrating the ORCA vapour memory by investigating an alkali-filled hollow-core fibre platform. I use light-induced atomic desorption (LIAD) to demonstrate record- breaking alkali vapour densities in fibre, a prerequisite for efficient memory operation. Because of its technical simplicity and integrability, its high bandwidth and its low noise, ORCA provides a viable route towards next generation, photonic quantum network technologies.

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Bourret, Simon. "Neutrino oscillations and earth tomography with KM3NeT-ORCA". Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC247.

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Les oscillations de saveur des neutrinos, découvertes au tournant du 21ème siècle, constituent à ce jour le signe le plus direct de physique au-delà du Modèle Standard. La collaboration KM3NeT a commencé la construction d'un détecteur à effet Tcherenkov de neutrinos au fond de la mer Méditerranée: ORCA (Oscillation Research with Cosmics in the Abyss). Le but principal d'ORCA sera la détermination de la hiérarchie de masse des neutrinos, un paramètre fondamental, encore inconnu, du modèle théorique des oscillations de neutrinos. Le principe de la mesure est la détection d'un large échantillon de neutrinos atmosphériques ayant traversé la Terre, et l'analyse de leurs oscillations de saveur. Ces oscillations sont modifiées et augmentées par les effets de matière, dus à la présence d'une densité d'électrons le long de la trajectoire des neutrinos. Au-delà de la hiérarchie de masse et de la mesure des paramètres d'oscillation atmosphériques, ORCA sera alors capable de mesurer la densité en électrons et donc, en principe, de fournir des informations nouvelles sur la composition chimique des couches profondes de la Terre. Cette thèse présente une nouvelle étude, menée au sein de la collaboration KM3NeT, de la sensibilité d'ORCA à la détermination de la hiérarchie de masse des neutrinos, aux paramètres d'oscillations atmosphériques, et à la densité en électrons dans le noyau externe et le manteau inférieur de la Terre. La thèse se concentre sur le développement d'une nouvelle méthode d'analyse dont le but est de rendre compte de la réponse du détecteur de la manière la plus précise possible. Pour cela, la méthode est basée sur l'utilisation de matrices de réponses corrélées et construites à partir de simulations Monte Carlo. Les méthodes statistiques et sources d'incertitude systématique sont aussi étudiées en détail. La méthode développée permet une première exploration de nouvelles stratégies d'analyse optimisées. Les études de sensibilité montrent qu'ORCA atteindra une sensibilité médiane à la hiérarchie de masse d'au moins 3 sigma après quelques années d'opération, le résultat dépendant en grande partie de la valeur réelle de la hiérarchie de masse et des autres paramètres d'oscillation encore inconnus. Une performance compétitive pour la mesure des paramètres d'oscillation atmosphériques est aussi attendue. Dans le cas où la hiérarchie de masse est normale et après 10 ans de prise de données, la densité en électrons pourra être mesurée avec une précision d'environ 5% dans le manteau inférieur, et 7% dans le noyau externe
Neutrino flavour oscillations, discovered at the turn of the 21st century, currently provide the most direct window on physics beyond the Standard Model. The KM3NeT collaboration has started the construction of a megaton-scale Cherenkov neutrino detector deep underwater in the Mediterranean: ORCA (Oscillation Research with Cosmics in the Abyss). ORCA's main goal will be the determination of the neutrino mass hierarchy, a major unknown in the current understanding of neutrino oscillations, via the detection of large samples of atmospheric neutrinos crossing the Earth and the analysis of their flavour oscillations. These oscillations are enhanced by matter effects, sensitive to the electron density along the neutrino paths. Beyond the neutrino mass hierarchy and the measurement of atmospheric oscillation parameters, this will allow ORCA to measure the electron density of the deep Earth, and possibly provide constraints on the chemical composition of its innermost layers. This thesis presents a new study, undertaken within the KM3NeT collaboration, of the sensitivity of ORCA to the determination of the neutrino mass hierarchy, oscillation parameters, and the electron density in the outer core and lower mantle of the Earth. The focus is given to the development of a new analysis methodology intended to account for detector effects as precisely as possible by the use of a Monte Carlo based correlated model of detector response. Statistical methods and systematic uncertainties are also addressed in some detail. The methodology allows for a preliminary exploration of the potential of improved analysis strategies. Sensitivity studies show that ORCA is expected to achieve a median sensitivity to the NMH determination at the level of 3 sigma or better after a few years of operation, depending on the true hierarchy and true value of the oscillation parameters. Competitive performance for the measurement of atmospheric oscillation parameters is also expected. Assuming a normal mass hierarchy, the electron density can be measured with a precision of about 5% in the lower mantle, and 7% in the outer core

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Quinn, Liam. "Determining the neutrino mass hierarchy with KM3NeT/ORCA". Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0386.

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ORCA (Recherche d'Oscillations avec les Rayons Cosmiques dans l'Abysse) est un détecteur TCherenkov de neutrinos à l'échelle des mégatonnes, actuellement en construction par la collaboration KM3NeT, à 2450m de profondeur dans la mer Méditerranée.Les neutrinos atmosphériques traversent la Terre le long d'un large éventail de lignes des bases, en subissant des effets de matière qui augmentent les oscillations des neutrinos avec énergies de l'ordre de peu GeV, qui dépendent de l'hiérarchie de masse des neutrinos (NMH).La conception d' ORCA comprise une dense configuration de modules optiques, qui contiennent 31 photomultiplicateurs (PMTs) de 72 mm, qui exploitent les excellentes propriétés de l'eau de la mer pour reconstruire à la fois les cascades (principalement $\nu_e$) et les traces (principalement $\nu_\mu$) jusqu'à quelques GeV.Il est prévu que ORCA mesurera la NMH avec une signification statistique plus grand que $3\sigma$ après avoir pris des données pour quelques années.Ce travail s'axe sur la reconstruction d' événements ainsi que les méthodes et résultats des études de sensibilité à l'hiérarchie de masse et aux paramètres d'oscillation $\theta_{23}$ et $\Delta m_{32}^2$
ORCA (Oscillation Research with Cosmics in the Abyss) is a megaton-scale Cherenkov neutrino detector currently under construction by the KM3NeT collaboration, at a depth of 2450m in the Mediterranean Sea.Atmospheric neutrinos cross the Earth along a wide range of baselines, undergoing matter effects which enhance neutrino oscillations in the few GeV energy range with a dependence on the neutrino mass hierarchy (NMH).The ORCA design consists of a dense configuration of optical modules, containing 31 3'' photomultiplier tubes (PMTs), exploiting the excellent optical properties of deep seawater to reconstruct both cascade events (mostly $\nu_e$) and track events (mostly $\nu_\mu$) down to a few GeV.ORCA is expected to measure the NMH with a median significance greater than $3\sigma$ after a few years of operation.This work focuses on event reconstruction, as well as the methods and results of the sensitivity studies for the measurement of the mass hierarchy and the oscillation parameters $\theta_{23}$ and $\Delta m_{32}^2$

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Andrade, Luciana Almeida de. "Desenho urbano, satisfação e preferência na urbanização de orlas fluviais degradadas". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/132164.

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A reabilitação de orlas fluviais degradadas encontra-se em fase de grande prosperidade no Brasil. O estudo de medidas de reabilitação e dos fatores que definem seu sucesso são temas frequentemente debatidos na ciência. No entanto, esse debate está, geralmente, centrado em parâmetros mais facilmente mensuráveis que aderem à objetividade científica, ignorando, muitas vezes, aspectos mais subjetivos como a estética da paisagem ou o valor recreativo que poderiam ser identificados a partir da percepção dos indivíduos. Desta forma, o objetivo principal desta pesquisa é gerar subsídios para a elaboração de projetos de urbanização de orlas fluviais por meio da identificação dos níveis de satisfação e das preferências dos indivíduos em relação aos aspectos de desenho urbano dessas áreas. A estratégia de pesquisa adotada foi um estudo de caso realizado em uma área de orla fluvial degradada localizada no campus do Vale da Universidade Federal do Rio Grande do Sul em Porto Alegre-RS. Os métodos de coleta de dados englobam levantamento de arquivo, levantamento físico, observação e questionário com uso de simulações. Os resultados indicam que as preferências dos indivíduos envolvem ambientes com grandes áreas alagadas, mas mantendo uma proporção equilibrada com as áreas secas, margens com aspecto visual mais natural, alta densidade de vegetação arbórea de grande porte, distribuição desta vegetação de forma a criar grandes áreas sombreadas e ensolaradas, maior aceitação de equipamentos de lazer ativo do que passivo, distribuição de vias para automóveis acompanhando o traçado dos cursos d’água e trilhas e ciclovias próximas e distantes da água.
The rehabilitation of degraded waterfronts is in great prosperity phase in Brazil. The study of rehabilitation measures and the factors that determine their success are frequently debated topics in science. However, this debate usually focus on easily measurable parameters that fits the scientific objectivity, often ignoring subjective aspects such as landscape aesthetic or recreational value, that could be identified by the perception of individuals. Thus, the main goal of this research is to provide support for the development of waterfront urbanization plans by identifying the levels of satisfaction and preferences of individuals in relation to urban design aspects of these areas. The research strategy adopted was a case study in a degraded riverfront area located on the Vale campus of the Universidade Federal do Rio Grande do Sul in Porto Alegre-RS. Data collection methods include file and physical survey, observation and questionnaire using simulations. The results indicate that the preferences of individuals involve environments with large wetlands, while maintaining a balanced proportion to the dry areas, banks presenting a higher natural appearance, high density of large tree vegetation, vegetation distribution that allows to create large shaded and sunny areas, greater acceptance of active leisure activities than passive, distribution of streets following the route of waterways and trails and bicycle paths near and far from the water.

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Taku, Awa Taku. "The bio-ecology of grey-necked picathartes, Picathartes oreas : implications for conservation management". Thesis, University of Reading, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501356.

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Grey-necked Picathartes, Picathartes oreas, is among 349 species of African birds that are globally threatened with extinction. With the current deforestation and fragmentation of its habitat, this study was undertaken to assess population status and habitat requirements in one such forest fragment, the Mbam Minkom Mountain Forest in southern Cameroon. 90 breeding sites with 207 nests and 24 potential breeding sites were found. From 34 nests with signs of breeding activity, the entire population was estimated to be 68 breeding individuals. Populations were highest in the north west region but had declined from 40 breeding individuals in 2003 to 20 in 2007.

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Thomasi, Camila Dasso. "OrIAs : uma infraestrutura de nível micro-organizacional baseada em artefatos para sistemas multiagentes". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/90439.

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Neste trabalho é apresentada uma infraestrutura de nível micro-organizacional para sistemas multiagentes. A infraestrutura permite definir e gerenciar papéis e grupos de papéis organizacionais, que caracterizam o nível micro-organizacional das sociedades de agentes, em termos de quatro dimensões organizacionais: estrutural, funcional, dialógica e normativa. As principais características micro-organizacionais suportadas pela infraestrutura são: definição de papéis em termos de objetivos de realização (achievement goals) e objetivos de manutenção (maintenance goals), e seus respectivos planos; definição de normas organizacionais e um mecanismo para imposição das normas (norm enforcement); relações de dependências organizacionais entre papéis e grupos de papéis; mecanismo de reputação para auxiliar os agentes na busca de parceiros para seus objetivos individuais e selecionar parceiros para atingir metas coletivas; processo de reorganização não institucionalizado realizado por iniciativa dos agentes. A infraestrutura é baseada no metamodelo de agentes e artefatos e no conceito de organizações incorporadas (embodied organizations). Como resultado deste trabalho é disponibilizada uma infraestrutura de gerenciamento organizacional, independente de modelo organizacional, desenvolvida utilizando a plataforma CArtAgO que permite tornar a organização acessível aos agentes.
In this work, we present an artifact-based micro-organizational level infrastructure for multi-agent systems. It provides a way to define and manage the organizational roles and groups of roles that characterize the micro-organizational level of agent societies, in terms of the four organizational dimensions: structural, functional, dialogical and normative. The main micro-organizational features supported by the infrastructure are: definition of roles in terms of achievement and maintenance goals, and their corresponding plans; organizational norms and corresponding sanction-based mechanism of norm enforcement; organizational protocols to support the achievement of role goals; relations of organizational dependences between roles and groups of roles; reputation mechanism to help agents to find partners for their individual goals and to select partners to achieve collective goals; reorganization process not institutionalized performed by the initiative of agents. The infrastructure is based on the A & A meta-model and in the concept of embodied organizations. As a result of this work, we provide an organizational management infrastructure, independent of organizational model, developed using the CArtAgO platform that makes the organization accessible to agents.

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Eriksson, Kristina y Henrik Persson. "Performance and size assessment of ORCs in mobile military power generation". Thesis, KTH, Kraft- och värmeteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170579.

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In this study the suitability of small-scale organic Rankine cycles in military power generation is evaluated. It is presupposed that external combustion engines have favorable characteristics in terms of noise, heat and vibration signals.The work is conducted through a process consisting of three blocks; working fluid selection, component selection and modeling. The research community states that the optimal fluid is a matter of application. Therefore, a screening of working fluids is performed on the basis of a few key properties. A simplistic cycle model is used to determine the operating conditions that yield the best thermodynamic performance. Consequently, these conditions are the starting point of the component selection process. Each component that is selected introduces restrictions to the cycle. The upper pressure is, for example, limited by the material of the boiler. Therefore, an iterative selection methodology is employed in order to consider both cycle performance and component limitations. In the last block the model is refined with realistic properties of the selected components. Size and performance of the system are evaluated for electric outputs between 0.1 and 3.0 kW. The model is realized in Excel VBA and constructed for high user flexibility.It is found that the thermal efficiency is proportional to the size of the system. A water-methanol mixture passes the screening process and provides the best cycle performance. Also, scroll expanders are recommended as the prime mover of the system. With the proposed components, the realizable power range is between 1.8 and 3.0 kW. The most critical components, in terms of size, are the expander and condenser. Finally, this study indicates that the system can be built in sizes competitive to existing solutions.

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Libros sobre el tema "Orcas"

Drumlin, Sam. Orcas =: Las orcas. New York: PowerKids Press, 2013.

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Miller, Geoff. Orcas. Danbury, Conn: Grolier Educational, 1999.

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Throp, Claire. Orcas. Chicago, Ill: Capstone Heinemann Library, 2013.

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Orcas. Danbury, Conn: Grolier, 2009.

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Orcas. London: Raintree, 2013.

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Orcas. New York: PowerKids Press, 2013.

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Orcas. Minneapolis, MN: Bellwether Media, 2009.

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Rake, Jody Sullivan. Orcas. Mankato, Minn: Capstone Press, 2012.

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Orcas. New York: PowerKids Press, 2012.

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Orcas Island mystery. Hagerstown, MD: Review and Herald Pub. Association, 1998.

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Capítulos de libros sobre el tema "Orcas"

Chevreux, Laurent, Wim Plaizier, Christian Schuh, Wayne Brown y Alenka Triplat. "Orcas". En Corporate Plasticity, 103–5. Berkeley, CA: Apress, 2014. http://dx.doi.org/10.1007/978-1-4302-6748-5_25.

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Drias, Habiba, Yassine Drias y Ilyes Khennak. "A New Swarm Algorithm Based on Orcas Intelligence for Solving Maze Problems". En Trends and Innovations in Information Systems and Technologies, 788–97. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45688-7_77.

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Feinberg, Anat. "Orpas, Jizchak". En Kindlers Literatur Lexikon (KLL), 1. Stuttgart: J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_14738-1.

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Feinberg, Anat. "Orpas, Jizchak: Nemalim". En Kindlers Literatur Lexikon (KLL), 1–2. Stuttgart: J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_14739-1.

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Beetz, Bernhard. "OrCAD Demoversion 10.0". En Elektroniksimulation mit PSPICE, 355–61. Wiesbaden: Vieweg+Teubner Verlag, 2005. http://dx.doi.org/10.1007/978-3-322-91943-4_8.

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Gurman, Alan S. "Orca Strait 1". En Brief Therapy and Beyond, 319–21. New York, NY : Routledge, 2017. Includes bibliographical references and index.: Routledge, 2017. http://dx.doi.org/10.4324/9781315205823-22.

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Stefano, Giovanni di. "D'Arrigo, Stefano: Horcynus Orca". En Kindlers Literatur Lexikon (KLL), 1–2. Stuttgart: J.B. Metzler, 2020. http://dx.doi.org/10.1007/978-3-476-05728-0_3333-1.

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Lin, C. y L. Snyder. "Data ensembles in Orca C". En Languages and Compilers for Parallel Computing, 112–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/3-540-57502-2_43.

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Delling, Daniel, Robert Görke, Christian Schulz y Dorothea Wagner. "Orca Reduction and ContrAction Graph Clustering". En Algorithmic Aspects in Information and Management, 152–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02158-9_14.

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Amato, Flora, Francesco Moscato y Fatos Xhafa. "Cloud Orchestration with ORCS and OpenStack". En Advances in Internet, Data & Web Technologies, 944–55. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-75928-9_87.

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Actas de conferencias sobre el tema "Orcas"

Lujak, Marin y Alberto Fernández. "ORCAS". En SAC 2015: Symposium on Applied Computing. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2695664.2696024.

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Alexander, Daria, Wojciech Kusa y Arjen P. de Vries. "ORCAS-I". En SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3477495.3531737.

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Calde, Steve, Kim Goodwin y Robert Reimann. "SHS Orcas". En Case studies of the CHI2002|AIGA Experience Design FORUM. New York, New York, USA: ACM Press, 2002. http://dx.doi.org/10.1145/507752.507753.

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Ness, Steven R., Matthew Wright, L. Gustavo Martins y George Tzanetakis. "Chants and Orcas". En Proceeding of the 2nd ACM workshop. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1460676.1460680.

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Peretz, Eliad, Christine M. Hamilton, John C. Mather, Lucas Pabarcius, kevin N. Hall, Adam Michaels, Robert Pritchett, Wayne Yu, Peter Wizinowich y Eric Golliher. "ORCAS – Orbiting Configurable Artificial Star Mission Architecture". En UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts X, editado por James B. Breckinridge, H. Philip Stahl y Allison A. Barto. SPIE, 2021. http://dx.doi.org/10.1117/12.2594789.

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van Hoorn, Andre, Aldeida Aleti, Thomas F. Dullmann y Teerat Pitakrat. "ORCAS: Efficient Resilience Benchmarking of Microservice Architectures". En 2018 IEEE International Symposium on Software Reliability Engineering Workshops (ISSREW). IEEE, 2018. http://dx.doi.org/10.1109/issrew.2018.00-10.

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Bergamini, Miriã Lima y Ana Kuiau Suya Trumai. "COMPORTAMENTO ALIMENTAR E DE CAÇA DAS BALEIAS ASSASSINAS (ORCINUS ORCA) – REVISÃO DE LITERATURA". En I Congresso On-line Brasileiro de Biologia Marinha e Oceanografia. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/2271.

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Introdução: As baleias assassinas habitam todos os oceanos e têm uma enorme variedade de alimentação (mais de 140 espécies de animais). Devido a essa vasta amplitude de habitat existem 10 ecótipos diferentes de orcas. As mais estudadas são as do oceano pacífico norte, no qual populações simpátricas desenvolveram dois tipos de alimentação, tendo ficado conhecidas como residentes e transitórias. Objetivos: Exemplificar os diferentes tipos de caça que são utilizados pelas orcas residentes e transitórias. Material e Métodos: No mês de Agosto de 2021 foi realizada uma pesquisa bibliográfica nas plataformas Google Scholar e ResearchGate, utilizando as palavras-chave em inglês: Behavior; Hunt e Killer Whale; foram considerados 15 trabalhos para a realização deste estudo. Resultados: As orcas residentes se alimentam de peixes, a espécie mais observada foi o salmão chinook. Apresentam duas técnicas diferentes, no qual utilizam de cliques de ecolocalização para procurar os peixes. A primeira é chamada de alimentação em carrossel e consiste em perseguir os cardumes em direção a áreas de superfície de alto relevo, assim as presas ficam concentradas e as orcas se alimentam dos peixes que ficam atordoados por seus movimentos de cauda. A segunda se chama alimentação subterrânea e consiste nas baleias se movendo de forma isolada em áreas limitadas. Os relatos de caça das transientes tiveram desde pequenas durações (tubarão - 30 min) até longas durações (cachalotes - 4 horas). Ao caçar grandes cetáceos geralmente escolhem os indivíduos mais jovens e utilizam de uma estratégia de “ferir e retirar”, no qual pequenos grupos revezam entre ataques curtos e movimentação para impedir a fuga, também fazem tentativas de afogamento ao nadar sobre as costas da presa, buscando fatigar sua presa para tornar mais fácil a morte por asfixia. Durante a predação participam dos ataques fêmeas e jovens. A última estratégia especializada de caça consiste no encalhe intencional tendo como presas os pinípedes. Conclusão: A grande diferença entre as orcas transitórias e residentes são baseadas nos tipos de alimentação e diferenças aprendidas, as estratégias especializadas das transitórias são passadas por gerações representando mecanismos culturais. O ponto em comum entre os dois tipos é o uso da cooperação.

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Craswell, Nick, Daniel Campos, Bhaskar Mitra, Emine Yilmaz y Bodo Billerbeck. "ORCAS: 20 Million Clicked Query-Document Pairs for Analyzing Search". En CIKM '20: The 29th ACM International Conference on Information and Knowledge Management. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3340531.3412779.

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Harn, Robert, Thomas E. Castor y Michael G. Wray. "Emergency Replacement of Ferry Berthing Structures at the Orcas Island Ferry Terminal". En Ports Conference 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40555(2001)114.

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Rupprecht, M., C. Hoffmann, P. Hoffmann, J. Kollek, U. Liebers, I. Krohn y C. Witt. "Eine multizentrische Querschnittstudie zu Symptomprofilen und Komorbiditäten von 9.383 ambulanten COPD-Patienten in Deutschland (ORCAS-Studie)". En 60. Kongress der Deutschen Gesellschaft für Pneumologie und Beatmungsmedizin e. V. Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1678013.

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Informes sobre el tema "Orcas"

Kriete, Birgit. Orcas in Puget Sound. Fort Belvoir, VA: Defense Technical Information Center, enero de 2007. http://dx.doi.org/10.21236/ada477509.

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Greene, Richard M. Ocean Response Coastal Analysis System (ORCAS). Fort Belvoir, VA: Defense Technical Information Center, agosto de 2001. http://dx.doi.org/10.21236/ada627986.

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Greene, Richard M. Ocean Response Coastal Analysis System (ORCAS). Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2002. http://dx.doi.org/10.21236/ada629149.

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Donaghay, Percy L. y Margaret M. Dekshenieks. Ocean Response Coastal Analysis System (ORCAS). Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2001. http://dx.doi.org/10.21236/ada625027.

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Zaininger, H. W. Integrating wind turbines into the Orcas Island distribution system. Office of Scientific and Technical Information (OSTI), septiembre de 1998. http://dx.doi.org/10.2172/674963.

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Menden-Deuer, Susanne. Drivers of Plankton Patch Formation, Persistence and Decline in East Sound, Orcas Island, Washington. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2012. http://dx.doi.org/10.21236/ada573560.

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Menden-Deuer, Susanne. Quantifying Trophic and Demographic Rates of Plankton-Rich Layers in East Sound, Orcas Island, Washington. Fort Belvoir, VA: Defense Technical Information Center, enero de 2006. http://dx.doi.org/10.21236/ada521828.

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Menden-Deuer, Susanne. Quantifying Trophic and Demographic Rates of Plankton-Rich Layers in East Sound, Orcas Island, Washington. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2007. http://dx.doi.org/10.21236/ada574185.

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Zaininger, H. W. y P. R. Barnes. Applying wind turbines and battery storage to defer Orcas Power and Light Company distribution circuit upgrades. Office of Scientific and Technical Information (OSTI), marzo de 1997. http://dx.doi.org/10.2172/560719.

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