53,980 research outputs found
Um estudo sobre os filtros Hodrick-Prescott e Baxter-King
Full text linkDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Sócio-Econômico. Programa de Pós-Graduação em Economia.O que estamos fazendo quando filtramos dados econômicos? Esta pergunta me levou a tentar entender os dois procedimentos mais utilizados em filtragem linear. Para respondê-la eu faço uma resenha de literatura, buscando estudar, sintetizar e apresentar de maneira didática a Teoria de Filtragem utilizada em Macroeconomia a qual esta fundamentada na Análise Espectral. O filtro HP retém os componentes com flutuações menores do que 32 trimestres, enquanto o filtro BK retém os componentes intermediários com flutuações entre 6 e 32 trimestres. Ambos os filtros HP e BK geram resultados espúrios, uma vez que existe uma série de problemas relacionados ao processo de filtragem. Os filtros alteram a volatilidade, a persistência e o tipo de co-movimento da série do produto com cada série estudada
O foco narrativo na ficção contemporânea : uma leitura de Author, Author, de David Lodge
Full text linkOrientador : Prof. Dr. Caetano Waldrigues GalindoAutor não autorizou a divulgação do arquivo digitalDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Humanas, Letras e Artes, Programa de Pós-Graduação em Letras. Defesa: Curitiba, 26/06/2013Bibliografia: fls. 158-161Área de concentração: Estudos LiteráriosResumo: O propósito deste trabalho é refletir sobre a construção do foco narrativo em Author, Author (2004), de David Lodge, romance biográfico sobre o escritor Henry James (1843-1916). O narrador não se limita a situar o leitor na narrativa: o seu posicionamento em relação aos aspectos factuais da vida e do percurso literário do romancista norte-americano desempenha papel fundamental na discussão das estratégias narrativas da prosa de ficção de James. Na construção ficcional do malogro na noite de estreia de Guy Domville, em Londres, em 1895, por exemplo, é possível perceber a bipartição desse narrador, capaz de contar e mostrar dois episódios que se passam em dois lugares diferentes, simultaneamente. Em outros momentos do romance, a voz autoral embaralha-se com a voz do sujeito da enunciação a tal ponto, que o leitor menos atento encontra certa dificuldade para colocar ordem nos discursos. O abandono gradual da prosa de ficção em busca de uma identidade como dramaturgo, a falta de êxito na dramaturgia, a lenta recuperação psicológica, a retomada da prosa de ficção e o resultado insatisfatório da revisão e escrita de prefácios para as suas obras, para compor The novels and tales of Henry James:The New York Edition (1905), são alguns dos desdobramentos da trajetória de James, discutidos em Author, Author.Abstract: The purpose of this dissertation is to think over the construction process of narrative focus in Author, Author (2004), by David Lodge, a biographical novel about the writer Henry James (1843-1916). The narrator does not limit himself to guiding the reader through the narrative; rather, his attitude towards factual aspects of the life and literary course of the North-American novelist seems to play a fundamental role in the novel. In the fictional construction of the débâcle of "Guy Domville", in London, 1895 for instance it is possible to distinguish the narrator's bipartition, in order to tell and show two different episodes which happen in two different places, simultaneously. In other moments, the authorial voice blends with that of the subject of the enunciation to such a degree that the less attentive reader may not be capable of organizing the discourse, in a first moment. James' gradual movement away from prose fiction so as to find his playwright identity; the lack of success as a playwright; his subsequent slow psychological recovery; the return to prose fiction; and, finally, the weak result of writing and revising prefaces to his literary works in order to put together The Novels and Tales of Henry James: The New York Edition (1905), are some of the most conspicuous events in James' trajectory discussed in Author, Author
Pigs' needs and wants
No full textAnimal welfare is inherently related to animals’ needs and wants. Needs relate to biological requirements, while wants relate to animals’ desires, which may go beyond what is required to maintain health. The Five Freedoms, which underpin much of the guidance and legal frameworks regarding protection of farm animal welfare, are closely related to animals’ needs. Yet despite their acceptance as the basis for minimal welfare standards, it can be argued that many of the freedoms, and thus animals’ needs, are not actually met for pigs kept under commercially intensive conditions. This is particularly the case regarding the ‘Freedom to express normal behaviour’. In many cases, normal behaviour is not merely a desire but innate and needs to be performed in order to remain physically or psychologically healthy or to produce healthy offspring. This chapter aims to reflect on pigs’ needs and wants and how these are met in current pig husbandry systems. We also propose a matrix of needs and wants as guidance for moving towards better standards
Abordagem das síndromes coronarianas agudas em idosos em hospital geral do SUS
Full text linkINTRODUÇÃO: As síndromes coronárias agudas (SCA) abrangem um espectro de doenças, que incluem a isquemia silenciosa, a angina instável e o infarto agudo do miocárdio (IAM) com ou sem supradesnivelamento do segmento ST. A doença arterial coronariana representa a principal causa de óbito no mundo inteiro e sua prevalência vem aumentando progressivamente em conseqüência do
aumento da expectativa de vida e da sobrevivência aos quadros agudos.
OBJETIVO: Analisar a abordagem realizada em idosos com síndrome coronariana aguda em um hospital geral do SUS. MÉTODOS: Estudo de corte transversal com amostra constituída por 31 pacientes idosos acima de 60 anos que apresentaram sintomas clínicos compatíveis com coronariopatia aguda com ou sem supradesnível do segmento ST no eletrocardiograma de 12 derivações com até 07 dias de evolução atendidos no hospital deputado Janduhy Carneiro em Patos-PB. A análise realizada foi descritiva em todas as variáveis do estudo. RESULTADOS: Dos participantes da amostra 22 (71%) eram do sexo feminino, a faixa etária predominante foi de 71 a 80 anos em 16 (51,6%) dos casos. Os fatores de riscos mais prevalentes encontradas foram a hipertensão arterial 27 casos (87,1%), história familiar para doença arterial coronária 18 casos (58,1%) e diabetes mellitus 08 casos (25,8%). Houve uma associação com alta mortalidade para pacientes classificados em Killip III e alto risco no TIMI Risk escore. Apenas nove (36%) dos pacientes infartados com supra de ST fizeram terapia de recanalização com fibrinolítico.
Medicações como betabloqueador e heparina foram menos utilizadas na admissão e medicações como AAS, betabloqueador, inibidores da enzima conversora da angiotensina e estatinas deixaram de ser prescritas com freqüência na alta hospitalar. Houve uma alta mortalidade dos pacientes idosos verificada no estudo em 35,5% dos casos. CONCLUSÃO: Os problemas detectados nos idosos com
SCA esbarram na precariedade do modelo de saúde e não seguimento das diretrizes vigentes. Fica evidente a necessidade de novos padrões de atenção à saúde com aplicação de políticas públicas desde a ênfase na prevenção de fatores de risco cardiovasculares, na capacitação dos profissionais de saúde até o uso de terapêuticas comprovadamente eficazes para diminuir esta alta mortalidade.INTRODUCTION: The acute coronary syndromes (ACS) cover a spectrum of
diseases, which include the silent ischemia, unstable angina and acute myocardial
infarction (AMI) with or without ST-segment elevation. Coronary artery disease is the
leading cause of death worldwide and its prevalence has been increasing
progressively as a result of the increase in life expectancy and the survival of acute
cases. OBJECTIVE: To analyze the approach performed by the SUS in elderly with
acute coronary syndrome in a general hospital. METHODS: A cross-sectional study
with a sample consisting of 31 elderly patients older than 60 years who were
presented with clinical symptoms compatible with acute coronary artery disease with
or without ST-segment elevation in 12-lead electrocardiogram with up to 07 days of
evolution in the Deputado Janduhy Carneiro hospital in Patos-PB. The analysis was
descriptive in all the variables of the study. RESULTS: From the sampled patients, 22
(71%) were female, the predominant age range was from 71 to 80 years in 16
(51,6%) of the cases. The most prevalent risk factors found were hypertension, 27
cases (87.1 %), family history of coronary artery disease, 18 cases (58.1 %) and
diabetes mellitus, 08 cases (25.8 %). There was an association with high mortality for
patients classified in Killip class III and high risk in TIMI Risk score. Only nine (36 %)
patients with myocardial infarction with ST segment elevation did therapy
recanalization with fibrinolytic therapy. Medications such as beta-blockers and
heparin were used less in the admission and medications such as aspirin, betablockers,
angiotensin-converting enzyme inhibitors and statins are no longer
prescribed frequently in hospital discharge. There was a high mortality of elderly
patients (35.5% of cases) found in the study. CONCLUSION: The problems detected
in the elderly with SCA collide in the precariousness of the health model and does
not follow the current guidelines. It is evident, therefore, the need for new standards
of care in health care with implementation of public policies since the emphasis on
prevention of cardiovascular risk factors, in the training of health professionals to the
use of therapies that have proven effective for reducing this high mortality
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Piglet mortality and morbidity: Inevitable or unacceptable?
Full text linkPiglet mortality is a problem with complex aetiology, predisposed by the natural biology of a polytocous species which produces multiple offspring allocated disproportionate resources both in the pre- and post-natal environment. Intensive sibling rivalry to acquire limited uterine resources prenatally, and then limited nutrients postnatally, leads to a high risk of mortality for the weakest among the offspring. In the domestic pig these risks have been exacerbated by intensive selection for economic traits such as prolificacy and leanness. Therefore a certain amount of mortality would seem expected. The acceptability of death can be a subject of much ethical debate. However, even if death itself is not considered a welfare issue, the manner of dying is, particularly when it involves pain and/or suffering. Thus, whilst the life history strategy of the pig encompasses mortality risk, at what point does the inevitable become unacceptable for animal welfare
Short-time critical dynamics of the Baxter-Wu model
No full textWe study the early time behavior of the Baxter-Wu model, an Ising model with three-spin interactions on a triangular lattice. Our estimates for the dynamic exponent z are compatible with results recently obtained for two models which belong to the same universality class of the Baxter-Wu model: the two-dimensional four-state Potts model and the Ising model with three-spin interactions in one direction. However, our estimates for the dynamic exponent theta of the Baxter-Wu model are completely different from the values obtained for those models. This discrepancy could be related to the absence of a marginal operator in the Baxter-Wu model
\u3cem\u3eAs I Lay Dying\u3c/em\u3e: Narrative Theatre
No full textAdapted for the stage and directed by Gloria Baxter, Department of Theatre and Communication Arts, Memphis State University
Extensions and automorphisms of Rota-Baxter groups
Full text linkThe notion of Rota-Baxter groups was recently introduced by Guo, Lang and Sheng [{\em Adv. Math.} 387 (2021), 107834, 34 pp.] in the geometric study of Rota-Baxter Lie algebras. They are closely related to skew braces as observed by Bardakov and Gubarev. In this paper, we study extensions of Rota-Baxter groups by constructing suitable cohomology theories. Among others, we find relations with the extensions of skew braces. Given an extension of Rota-Baxter groups, we also construct a short exact sequence connecting various automorphism groups, which generalizes the Wells short exact sequence.This is a preliminary version of this research. we will soon upload a final version free from typos and error
Nurse sow strategies in the domestic pig: I. Consequences for selected measures of sow welfare
Full text linkManagement strategies are needed to optimise the number of piglets weaned from hyper-prolific sows. Nurse sow strategies involve transferring supernumerary new-born piglets onto a sow whose own piglets are either weaned or fostered onto another sow. Such ‘nurse sows’ have extended lactations spent in farrowing crates, which could have negative implications for their welfare. This study used 47 sows, 20 of which farrowed large litters and had their biggest piglets fostered onto nurse sows which were either 1 week (2STEP7, n=9) or 3 weeks into lactation (1STEP21, n=10). Sows from which piglets were removed (R) were either left with the remainder of the litter intact (I) (remain intact (RI) sows, n=10), or had their litters equalised (E) for birth weight using piglets of the same age from non-experimental sows (remain equalised (RE) sows, n=9). Piglets from 2STEP7 were fostered onto another nurse sow which was 3 weeks into lactation (2STEP21, n=9). Back-fat thickness was measured at entry to the farrowing house, at fostering (nurse sows only) and weaning. Sows were scored for ease of locomotion and skin and claw lesions at entry to the farrowing house and weaning. Salivary cortisol samples were collected and tear staining was scored at 0900 h weekly from entry until weaning. Saliva samples were also taken at fostering. Data were analysed using GLMs with appropriate random and repeated factors, or non-parametric tests were applied where appropriate. Back-fat thickness decreased between entry and weaning for all sows (F 1,42=26.59, P<0.001) and tended to differ between treatments (F 4,16=2.91; P=0.06). At weaning RI sows had lower limb lesion scores than 2STEP7 and RE sows (χ 2 4=10.8, P<0.05). No treatment effects were detected on salivary cortisol concentrations (P>0.05) and all nurse sows had a higher salivary cortisol concentration at fostering, compared with the other days (F 10,426=3.47; P<0.05). Acute effects of fostering differed between nurse sow treatments (F 2,113=3.45, P<0.05); 2STEP7 sows had a higher salivary cortisol concentration than 1STEP21 and 2STEP21 sows on the day of fostering. 2STEP7 sows had a higher salivary cortisol concentration at fostering, compared with 1STEP21 and 2STEP21 sows. Tear staining scores were not influenced by treatment (P>0.05). In conclusion, no difference was detected between nurse sows and non-nurse sows in body condition or severity of lesions. Although some nurse sows experienced stress at fostering, no long-term effect of the nurse sow strategies was detected on stress levels compared with sows that raised their own litter
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