937 resultados para Crises


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The individual affective-cognitive evaluations are important factors that control the way he feels the disease impact in his life. Then, the perception of seizure control is a more important factor to evaluate Quality of Life (QoL) than the illness characteristics, such as the severity, type, sickening period and seizure frequency. This study searched for the relationship among the subjective variables (perception of seizure control) and the illness characteristics to evaluate QoL. The sample consisted of 60 individuals with chronic epilepsy, aging 18 to 70 (M=37.05; SD=11.25), chosen at randon from the ambulatory of epilepsy - HC/UNICAMP, by the Questionnaire 65. The illness characteristics were not significant, except the seizures frequency, when associated to the impairment in QoL among controlled seizures and seizures with frequency higher than 10 per month (p=0.021). The perception of control was significantly associated to QoL (p=0.005).

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We prospectively follow up 80 mentally healthy women at menacme age, with chronic epilepsy and had had least one seizure in the month preceding the study. We selected 59 patients from whom we were able to observe at least three regular menstrual cycles with seizures. We defined regular, irregular cycle, perimenstrual and ovulation period. According to our concepts we have got 19, 30 and 6 patients with respectively severe, moderate and mild exacerbation of perimenstrual seizures. Using our definitions 6, 20 and 17 patients showed severe, moderate and mild accentuation of seizures during ovulation, while 15 patients showed no ovulatory accentuation. Our attention was drawn to the great number of perimenstrual and ovulatory exacerbation of seizures, according to our criteria. From 55 patients with perimenstrual accentuation of seizures 44 (74.54%) showed exacerbation during the ovulatory period. In our opinion, these data speak out in favor of the hormonal theory to explain these occurrences. We discuss these data based on the avaiable literature. We think the strogen peak is probably the main cause of the increased frequency of epileptic seizures during the ovulation period. New studies, documenting objectively the ovulation and seizures are mandatory to clarify the relationship of these aspects of the female endocrine reproductive physiology in epileptics.

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Universidade Estadual de Campinas . Faculdade de Educao Fsica

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This paper investigates the performance, investment styles andmanagerial abilities of French socially responsible investment (SRI) funds investing in Europe during crisis and non-crisis periods. Our results show that SRI funds significantly underperformcharacteristics-matched conventional funds during non-crisis periods, but match the performance of their peers duringmarket downturns. The underperformance of SRI funds during good economic states is driven by funds that use negative screens, since funds that use only positive screens performsimilarly to conventional funds across differentmarket conditions. SRI and conventional funds showsignificant differences in risk exposures during non-crisis periods but exhibit much more similar investment styles during crises. Furthermore,we find little evidence of significant differences inmanagerial abilities during bad economic states. Yet, during non-crisis periods, SRI and conventional fund managers exhibit significantly different style-timing abilities and these differences are also related to screening strategies.

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The 2008 economic crisis challenged accounting, either demanding recognition and measurement criteria well adjusted to this scenario or even questioning its ability to inform appropriately entities' financial situation before the crisis occurred. So, our purpose was to verify if during economic crises listed companies in the Brazilian capital market tended to adopt earnings management (EM) practices. Our sample consisted in 3,772 firm-years observations, in 13 years - 1997 to 2009. We developed regression models considering discretionary accruals as EM proxy (dependent variable), crisis as a macroeconomic factor (dummy variable of interest), ROA, market-to-book, size, leverage, foreign direct investment (FDI) and sector as control variables. Different for previous EM studies two approaches were used in data panel regression models and multiple crises were observed simultaneously. Statistics tests revealed a significant relation between economic crisis and EM practices concerning listed companies in Brazil in both approaches used.

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In this work we investigate the population dynamics of cooperative hunting extending the McCann and Yodzis model for a three-species food chain system with a predator, a prey, and a resource species. The new model considers that a given fraction sigma of predators cooperates in prey's hunting, while the rest of the population 1-sigma hunts without cooperation. We use the theory of symbolic dynamics to study the topological entropy and the parameter space ordering of the kneading sequences associated with one-dimensional maps that reproduce significant aspects of the dynamics of the species under several degrees of cooperative hunting. Our model also allows us to investigate the so-called deterministic extinction via chaotic crisis and transient chaos in the framework of cooperative hunting. The symbolic sequences allow us to identify a critical boundary in the parameter spaces (K, C-0) and (K, sigma) which separates two scenarios: (i) all-species coexistence and (ii) predator's extinction via chaotic crisis. We show that the crisis value of the carrying capacity K-c decreases at increasing sigma, indicating that predator's populations with high degree of cooperative hunting are more sensitive to the chaotic crises. We also show that the control method of Dhamala and Lai [Phys. Rev. E 59, 1646 (1999)] can sustain the chaotic behavior after the crisis for systems with cooperative hunting. We finally analyze and quantify the inner structure of the target regions obtained with this control method for wider parameter values beyond the crisis, showing a power law dependence of the extinction transients on such critical parameters.

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Prope-se, neste trabalho de investigao, explorar as disciplinas de Gesto de Reputao e de Gesto de Comunicao de Crise, de modo a enquadrar a reputao como um activo de valor, que protege uma organizao quando esta enfrenta uma crise. O projecto de dissertao dividido em duas partes. Uma reviso bibliogrfica que constitui um campo terico de base e um estudo de caso, sobre a crise financeira de 2008, que procura explorar o efeito da reputao num contexto real de crise. Este trabalho sugere, ao nvel terico, que a reputao pode funcionar como um escudo protector de uma organizao, quando esta enfrenta uma crise, e suporta esta mesma ideia empiricamente, atravs da investigao realizada.

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Nesta tese estudamos os efeitos de contgio financeiro e de memria longa causados pelas crises financeiras de 2008 e 2010 em alguns mercados acionistas internacionais. A tese composta por trs ensaios interligados. No Ensaio 1, recorremos teoria das cpulas para testar a existncia de contgio e revelar os canais investor induced de transmisso da crise de 2008 aos mercados da Blgica, Frana, Holanda e Portugal (grupo NYSE Euronext). Conclumos que existe contgio nestes mercados, que o canal portfolio rebalancing o mecanismo mais importante de transmisso da crise, e que o fenmeno flight to quality est presente nos mercados. No Ensaio 2, usando novamente modelos de cpulas, avaliamos os efeitos de contgio provocados pelo mercado acionista grego nos mercados do grupo NYSE Euronext, no contexto da crise de 2010. Os resultados obtidos sugerem que durante a crise de 2010 apenas o mercado portugus foi objeto de contgio; alm disso, conclui-se que os efeitos de contgio provocados pela crise de 2008 so claramente superiores aos efeitos provocados pela crise de 2010. No Ensaio 3, abordamos o tema da memria longa atravs do estudo do expoente de Hurst dos mercados acionistas da Blgica, E.U.A., Frana, Grcia, Holanda, Japo, Reino Unido e Portugal. Verificamos que as propriedades de memria longa dos mercados foram afetadas pelas crises, especialmente a de 2008 que aumentou a memria longa dos mercados e tornou-os mais persistentes. Finalmente, usando cpulas mais uma vez, verificamos que as crises provocaram, em geral, um aumento na correlao entre os expoentes de Hurst locais dos mercados foco das crises (E.U.A. e Grcia) e os expoentes de Hurst locais dos outros mercados da amostra, sugerindo que o expoente de Hurst pode ser utilizado para detetar efeitos de contgio financeiro. Em sntese, os resultados desta tese sugerem que comparativamente com perodos de acalmia, os perodos de crises financeiras tendem a provocar ineficincia nos mercados acionistas e a conduzi-los na direo da persistncia e do contgio financeiro.

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Enterprise and Work Innovation Studies, 5

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Apresentao ao 7. Congresso Nacional de Administrao Pblica, realizado no Centro de Congressos de Lisboa, de 10 a 11 de Novembro de 2010.