126 research outputs found
Nonlinear trend stationarity of real exchange rates: the case of the Mediterranean countries
The aim of this article is to provide additional evidence on the fulfilment of the Purchasing Power Parity hypothesis in the so-called Mediterranean countries. In order to test for the empirical validity of such hypothesis, we have applied two types of unit root tests. The first group is due to Bierens (1997) who generalizes the alternative hypothesis to nonlinear trend stationariry and, the second is the Leybourne, Newbold and Vougas (1998) approach that uses a nonlinear specification for the intercept and slope in order to detrend the series. The results suggest that the evidence in favour of the Purchasing Power Parity hypothesis increases when we allow for nonlinear alternatives
Real convergence in Europe: a cluster analysis
In this paper we analyse real convergence in GDP per worker in the EU member states. The aim is to test whether there is evidence of club convergence in the EU, i.e. divergence in GDP per worker. Evidence in favour of cluster or club convergence may be an indication of significant productivity divergences between countries, which may also explain the current turmoil in the euro zone. The results show evidence of different economic growth rates within Europe, which also converge to different steady states, implying divergence in the EU-14. Within the EU-14 member states we observe two convergence clubs, which are not related to the fact that some countries belong to the euro area. Furthermore, Eastern European countries are also divided in two clubs, with a more direct effect of belonging to the euro zone in the composition of the clubs
Time trends and persistence in European temperature anomalies.
This paper looks at the level of persistence in the temperature anomalies series of 114 European cities. Once this level of persistence has been identified, the time trend coefficients are estimated and the results indicate that most of the series examined display positive trends, supporting thus climate warming. Moreover, the results obtained confirm the hypothesis that long-memory behaviour cannot be neglected in the study of temperature time series, changing, therefore, the estimated effect of global warming.pre-print825 K
Protein losing gastroenteropathy and possible relationship to cytomegalovirus infection. Ménétrier disease in a child
La enfermedad de MĂ©nĂ©trier infantil es una gastroenteropatĂa perdedora de proteĂnas caracterizada por hipertrofia de la mucosa gástrica, de causa desconocida, aunque la mayorĂa de los casos informados se han asociado a infecciones virales. Se manifiesta clĂnicamente por edema y bioquĂmicamente por hipoproteinemia e hipoalbuminemia. Es poco comĂşn en los niños, en quienes tiene un carácter benigno y autolimitado, a diferencia de los adultos, en los que tiende a cronificarse y, en ocasiones, a malignizarse. Se presenta un caso de enfermedad de MĂ©nĂ©trier infantil con sĂndrome ascĂtico edematoso posiblemente asociado a una infecciĂłn por citomegalovirus.MĂ©nĂ©trier's disease is a childhood protein-losing gastroenteropathy characterized by hypertrophy of the gastric mucosa, of unknown etiology, although most of reported cases have been associated with viral infections. Clinical manifestation is edema and biochemically there are hypoproteinemia and hypoalbuminemia. This disease is very rare in children and they have a benign and self-limiting course in contrast to adults where tend to be chronic and occasionally to become malignant. We present a child with MĂ©nĂ©trier disease with edema and ascites possibly associated with a cytomegalovirus infection.Fil: Hillman, MarĂa M.. Hospital Privado Centro MĂ©dico de CĂłrdoba; ArgentinaFil: Meinarde, Leonardo L.. Hospital Privado Centro MĂ©dico de CĂłrdoba; ArgentinaFil: Furnes, Raquel A.. Hospital Privado Centro MĂ©dico de CĂłrdoba; ArgentinaFil: Daruich, MarĂa L.. Hospital Privado Centro MĂ©dico de CĂłrdoba; ArgentinaFil: Riva, VerĂłnica. Hospital Privado Centro MĂ©dico de CĂłrdoba; ArgentinaFil: Cuestas, Eduardo. Hospital Privado Centro MĂ©dico de CĂłrdoba; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; Argentin
Effect of aquatic resistance interval training and dietary education program on physical and psychological health in older women: Randomized controlled trial
Due to demographic changes, the world’s population is progressively aging. The physiological deterioration of the older adult may lead to reduced balance capacity and increased risk of falls, among others, due to the prevalence of degenerative diseases. Physical exercise can be effective in reducing the risk of disease and slowing functional decline in older people. The aim of the research is to test the effects of aquatic resistance training and dietary education on health indicators, strength, balance, functional autonomy, perception of satisfaction with life. Thirty-four participants aged 69 ± 4 years were randomly assigned into two groups: experimental (aquatic resistance interval training) and control group (no intervention). The intervention consisted of resistance training in an aquatic environment carried out for 14 weeks (three sessions per week: 60 min each). All variables were analyzed twice; pre - post intervention. Aquatic resistance training has positive effects on strength (p < 0.001), functional self-sufficiency (p < 0.001) and aerobic capacity (p < 0.001), however, no significant differences were observed in the perception of satisfaction with life and balance. Research results suggest that older women who engage in regular, scheduled aquatic resistance training have greater autonomy in performing activities of daily living, agility, gait control, and body composition variables (lower fat compartment and greater muscle mass)
Instrumento autónomo para la medición, visualización y almacenamiento de variables climáticas
En este trabajo se presenta el diseño, implementaciĂłn y calibraciĂłn de un medidor portátil de irradiancia, PAR, temperatura y humedad, asĂ como de todos los componentes que forman parte del sistema. El instrumento ha sido desarrollado en el Grupo en EnergĂas Renovables (GER ) de la Universidad Nacional del Nordeste. El mismo contiene sensores digitales que le permiten medir la temperatura ambiente, humedad relativa y sensores analĂłgicos para determinar el valor de la irradiancia y PAR. Es portable, posee una autonomĂa de 5 (cinco) dĂas, una pantalla para mostrar las variables medidas y es capaz de registrar datos en una tarjeta SD cumpliendo con la funciĂłn de datalogger. Conjuntamente se ha desarrollado un software para la lectura y representaciĂłn en un display de las magnitudes medidas en funciĂłn del tiempo. En esta etapa de la investigaciĂłn se cuenta con un prototipo funcional calibrado en etapa de pruebas experimentales finales
Desarrollo de un medidor portátil de irradiancia, par, temperatura y humedad
En este trabajo se presenta el diseño, implementaciĂłn y contrastaciĂłn de un medidor portátil de irradiancia, PAR, temperatura y humedad, asĂ como de todos los componentes que forman parte del sistema. El instrumento ha sido desarrollado en el Grupo en EnergĂas Renovables (GER) de la Universidad Nacional del Nordeste. El mismo contiene sensores digitales que le permiten medir la temperatura ambiente, humedad relativa y sensores analĂłgicos para determinar el valor de la irradiancia y PAR. Es portable, posee una autonomĂa de 5 (cinco) dĂas, una pantalla para mostrar las variables medidas y es capaz de registrar datos en una tarjeta SD cumpliendo con la funciĂłn de datalogger. Conjuntamente se ha desarrollado un software para la lectura y representaciĂłn en un display de las magnitudes medidas en funciĂłn del tiempo. En esta etapa de la investigaciĂłn se cuenta con un prototipo funcional contrastado en etapa de pruebas experimentales finales.This paper describes the design, implementation and calibration of a irradiance, PAR, temperature and humidity portable meter, as well as all the components forming part of the system. The instrument has been developed in the Renewable Energy Group (GER) of the National University of the Northeast. It contains digital sensors to measure relative humidity and ambient temperature. Analog sensors to determine the value of the irradiance and PAR. It is portable, has a autonomy of 5 (five) days, a display that show the measured variables and recording data on an SD card fulfilling the function of datalogger. Was developed a software for reading and representation in a display of the measured variables versus time. At this stage the GER-UNNE has a functional prototype calibrated in experimental stage.Tema 8: EnergĂas renovables, modelizaciĂłn y simulaciĂłn.Facultad de Arquitectura y Urbanism
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