Search results for " autore"
showing 10 items of 124 documents
Participación de la mujer y redes de coautoría en las revistas españolas de Sociología
2009
Se analiza la participación de la mujer en las revistas españolas del área de la Sociología a lo largo del período 2001-2005, aplicando para ello técnicas bibliométricas y Análisis de Redes Sociales. Existe un predominio de los hombres (75,08% de los autores) frente a las mujeres (24,92%), pese a que estas últimas son mayoritarias en la finalización de estudios universitarios. La desigualdad se comienza a percibir desde el inicio de la trayectoria investigadora y profesional, intensificándose con el tiempo, de forma que sólo un número muy reducido de las mismas alcanza los puestos más elevados del escalafón académico, que se corresponden con los autores de más elevada productividad. En rela…
Assessing the Commodity Market Price and Terms of Trade Exposures of Macroeconomy in Emerging and Developing Countries
2021
This paper provides novel evidence on commodity market exposure, i.e., the impacts of commodity price and terms of trade fluctuations on macro performance amongst 46 emerging and developing countries (EMDCs) in Africa, Asia and the Latin American and Caribbean (LAC) region. We estimate the exposure of six macroeconomic variables to the commodity prices and terms of trade. Our results indicate that in overall terms, there is a strong and statistically significant long-run relationship between the vector of analyzed world trade prices and macro variables in all EMDCs. However, based on the short-term reactions, only about 10% of the macroeconomic variation amongst the EMDCs is due to commodit…
Monetary policy and exchange rate dynamics in the Spanish economy
1999
As the Spanish economy gets more integrated in international markets, the real exchange rate becomes a key determinant of the monetary transmission. In this paper we trace out the dynamic response of prices, output and the exchange rate following a monetary policy shock. We estimate a structural VAR model whose identification scheme is based on the long run properties common to a large class of models. The results suggest that a small model with efficient asset markets plus nominal inertia and long run monetary neutrality, captures the essential features of the monetary transmission mechanism in Spain. The interest rate shock is well identified and the exchange rate overshoots its long run …
A Multi-Variate Predictability Framework to Assess Invasive Cardiac Activity and Interactions during Atrial Fibrillation
2017
Objective: This study introduces a predictability framework based on the concept of Granger causality (GC), in order to analyze the activity and interactions between different intracardiac sites during atrial fibrillation (AF). Methods: GC-based interactions were studied using a three-electrode analysis scheme with multi-variate autoregressive models of the involved preprocessed intracardiac signals. The method was evaluated in different scenarios covering simulations of complex atrial activity as well as endocardial signals acquired from patients. Results: The results illustrate the ability of the method to determine atrial rhythm complexity and to track and map propagation during AF. Conc…
Cerebral Autoregulation in Non-Brain Injured Patients: A Systematic Review.
2021
Introduction: Cerebral autoregulation (CA) plays a fundamental role in the maintenance of adequate cerebral blood flow (CBF). CA monitoring, through direct and indirect techniques, may guide an appropriate therapeutic approach aimed at improving CBF and reducing neurological complications; so far, the role of CA has been investigated mainly in brain-injured patients. The aim of this study is to investigate the role of CA in non-brain injured patients.Methods: A systematic consultation of literature was carried out. Search terms included: “CA and sepsis,” “CA and surgery,” and “CA and non-brain injury.”Results: Our research individualized 294 studies and after screening, 22 studies were anal…
Cerebral Blood Flow Regulation Under the Conditions of Arterial Hypoxia
1978
Pronounced arterial hypoxia induces a decrease of cerebrovascular resistance and an increase of total and regional cerebral blood flow. Under the conditions of normal arterial blood pressure and normal acid base status, the changes of both parameters commence when the oxygen tension in the arterial blood decreases below approximately 50 mm Hg. At the same time, the oxygen tension in the cerebral venous blood reaches values below approximately 28 mm Hg. Different authors [23, 28, 30, 31, 33] reported that cerebral blood flow responses to PaO2 decrease are threshold at these oxygen tensions. The threshold oxygen tension of cerebral venous blood was accorded a special significance because Noel…
COVID-19 Infection Process in Italy and Spain: Are Data Talking? Evidence From ARMA and Vector Autoregression Models
2020
COVID-19 (coronavirus disease 2019) has spread successfully worldwide in a matter of weeks. After the example of China, all the affected countries are taking hard-confinement measures to control the infection and to gain some time to reduce the significant amount of cases that arrive at the hospital. Although the measures in China reduced the percentages of new cases, this is not seen in other countries that have taken similar measures, such as Italy and Spain. After the first weeks, the worry was whether or not the healthcare system would collapse rather than its response to the patient's needs who are infected and require hospitalization. Using China as a mirror of what could happen in ou…
Usefulness of Cerebral Oximetry in TBI by NIRS
2021
Measurement of cerebral oximetry by near-infrared spectroscopy provides continuous and non-invasive information about the oxygen saturation of haemoglobin in the central nervous system. This is especially important in the case of patients with traumatic brain injuries. Monitoring of cerebral oximetry in these patients could allow for the diagnosis of inadequate cerebral oxygenation caused by disturbances in cerebral blood flow. It could enable identification of episodes of hypoxia and cerebral ischemia. Continuous bedside measurement could facilitate the rapid diagnosis of intracranial bleeding or cerebrovascular autoregulation disorders and accelerate the implementation of treatment. Howev…
Autoregolazione dell’apprendimento e portfolio.
2009
Nel contributo si presentano gli esiti di una ricerca sull'uso didattico del portfolio per lo sviluppo delle competenze metacognitive e delle capacità di autovalutazione degli studenti universitari. L'obiettivo del contributo è quello di richiamare l'attenzione sull'importanza dell'autoregolazione nello sviluppo dei processi di apprendimento. Dopo un breve inquadramento teorico, nel contributo si descrive lo strumento progettato per promuovere la capacità di autovalutazione e di autoregolazione negli studenti che hanno intrapreso gli studi universitari in campo educativo. Infine si commentano i risultati ottenuti dagli studenti.
Tutoraggio didattico tra pari a distanza: una ricerca-intervento svolta con gli studenti universitari
2021
Nell’a. a. 2020-21 è stata svolta una ricerca-intervento sul peer tutoring in ambito universitario, ipotizzato come strumento efficace per ridurre alcuni effetti negativi che la DAD, imposta dalla pandemia da covid-19, aveva provocato durante l’a. a. 2019-20 tra gli studenti iscritti al primo anno del corso di laurea triennale in Scienze dell’Educazione dell’Università di Palermo. 17 studentesse e 2 studenti del secondo anno di questo corso di studi, che avevano completato gli esami dell’anno precedente, dopo aver partecipato tra febbraio e marzo ad una specifica attività formativa, da marzo a giugno 2021 hanno aiutato, ancora in modalità a distanza, 33 studentesse e 2 studenti – loro colle…