Search results for "Temporal"
showing 10 items of 1095 documents
Annotazione in calce, in margine o a tergo di un documento
2010
Limited effects of size-selective harvesting and harvesting-induced life-history changes on the temporal variability of biomass dynamics in complex f…
2023
Harvesting has been implicated in destabilizing the abundances of exploited populations. Because selective harvesting often targets large individuals, some studies have proposed that exploited populations often experience demographic shifts toward younger, smaller individuals and become more sensitive to environmental fluctuations. The theory of consumer–resource dynamics has been applied to address the impacts of harvesting in simple modular food webs, but harvested populations are embedded in a complex food web in nature. In addition, exploited populations have been shown to undergo trait evolution or phenotypic changes toward early maturation at smaller sizes. Using an empirically derive…
Temporal constraints and creativity in bass lines of eminent jazz musicians
2023
Tämän eksploratiivisen tutkimuksen ensimmäisenä päätavoitteena on selvittää, miten päätöksentekoon ja toiminnan suunnitteluun käytettävissä oleva aika (esitettävän musiikin tempon ja harmonisen rytmin mukaan mitattuna) on yhteydessä luovuuteen huipputason jazzbasistien bassolinjoissa, kun luovuutta mitataan sävelkuvioiden vaihtelevuutena. Tutkimuksen toisena päätavoitteena on selvittää, onko laajan tietovaraston oppiminen välttämätön edellytys luovuudelle bassolinjojen rakentamisen yhteydessä. Aineisto koostuu 42:sta Paul Chambersin ja Ron Carterin bassolinjan nuotinnoksesta, joissa kaikki neljäsosanuoteista poikkeavat sävelkestot on joko poistettu tai muutettu neljäsosanuoteiksi. Aineiston…
L'enunciazione e le soggettività in Émile Benveniste
2009
Desarrollo de una batería de memoria semántica para pacientes con epilepsia del lóbulo temporal
2022
La epilepsia focal más frecuente es aquella epilepsia cuyo foco epileptógeno está localizado en el lóbulo temporal medial y es secundaria a una esclerosis con atrofia de la región amígdalo-hipocámpica, con una red epileptógena que abarca la porción anterior del lóbulo temporal. En ocasiones los pacientes requieren de un tratamiento quirúrgico que incluye la resección unilateral de ambas regiones, tanto del polo anterior, como del complejo amígdala-hipocampo. Estas estructuras han demostrado tener gran importancia para el procesamiento de la memoria semántica (región anterotemporal) y episódica (región amígdalo-hipocámpica), por lo que los pacientes que son sometidos a esta intervención suel…
Epilessia temporale e manifestazioni parossistiche neurovegetative in età prescolare: descrizione di un caso clinico emblematico
2014
Tratamiento bayesiano de valores ausentes en datos espacio-temporales
2015
Con frecuencia en estadística se tiene que hacer frente a la presencia de valores ausentes en el conjunto de datos sobre el que se desea realizar un análisis estadístico. La existencia de valores ausentes no sólo implica una mayor complejidad asociada al análisis sino que también introduce mayor incertidumbre en el estudio. Este hecho puede derivar en posibles sesgos en los resultados finales y, por tanto, cuestionar la fiabilidad en las conclusiones que de estos se deriven, por lo que la existencia de valores ausentes puede llegar a representar un serio problema si su tratamiento no es el adecuado. No es de extrañar entonces, la innumerable cantidad de publicaciones existentes asociadas al…
Statistical check of USLE-M and USLE-MM to predict bare plot soil loss in two Italian environments
2018
The USLE-M and the USLE-MM estimate event plot soil loss. In both models, the erosivity term is given by the runoff coefficient, QR, times the single-storm erosion index, EI30. In the USLE-MM, QREI30is raised to an exponent b1> 1 whereas b1= 1 is assumed in the USLE-M. Simple linear regression analysis can be applied to parameterize both models, but logarithmically transformed data have to be used for USLE-MM. Parameterizing the USLE-MM with nonlinear regression of untransformed data could be a more appropriate procedure. A statistical check of the two suggested models (USLE-M and USLE-MM), considering two alternative parameterization procedures for the USLE-MM, was carried out for the Mass…
. New ground-based lidar enables volcanic CO2 flux measurements
2015
AbstractThere have been substantial advances in the ability to monitor the activity of hazardous volcanoes in recent decades. However, obtaining early warning of eruptions remains challenging, because the patterns and consequences of volcanic unrests are both complex and nonlinear. Measuring volcanic gases has long been a key aspect of volcano monitoring since these mobile fluids should reach the surface long before the magma. There has been considerable progress in methods for remote and in-situ gas sensing, but measuring the flux of volcanic CO2—the most reliable gas precursor to an eruption—has remained a challenge. Here we report on the first direct quantitative measurements of the volc…
External sustainability in Spanish economy: bubbles and crises, 1970–2020
2023
We address the issue of the sustainability Spain’s exter-nal debt, using data for the period 1970–2020. To detect episodes of potentially explosive behavior of the Spanish net foreign assets over GDP ratio and the current account balance over GDP ratio, as well as episodes of external adjustments over this long period, we employ a recursive unit root test approach. Our empirical analysis leads us to conclude that there is some evidence of bubbles in the ratio between Spanish net foreign assets and the GDP. In contrast, the evidence that the ratio between the Spanish current account balance and the GDP had explosive subperiods is very weak. The episode of explosive behavior identified in the…