547 research outputs found
BER-3.2 report: Methodology for justification and optimization of protective measures including a case study. Protective actions planned for Gotland in an EXERCISE SIEVERT-release
Limiting absorption principle for the dissipative Helmholtz equation
Adapting Mourre's commutator method to the dissipative setting, we prove a
limiting absorption principle for a class of abstract dissipative operators. A
consequence is the resolvent estimates for the high frequency Helmholtz
equation when trapped trajectories meet the set where the imaginary part of the
potential is non-zero. We also give the resolvent estimates in Besov spaces
A technical evaluation of Jan Beyea's report: ''A study of some of the consequences of hypothetical reactor accidents at Barsebäck''
En teknisk vurdering af Jan Beyea's rapport: A study of some of the consequences of hypothetical reactor accidents at Barsebäck
Working Memory, but Not IQ, Predicts Subsequent Learning in Children with Learning Difficulties
The purpose of the present study was to compare the predictive power of working memory and IQ in children identified as having learning difficulties. The term âworking memoryâ refers to the capacity to store and manipulate information in mind for brief periods of time. Working memory capacity is strongly related to learning abilities and academic progress, predicting current and subsequent scholastic attainments of children across the school years in both literacy and numeracy. Children aged between 7 and 11 years were tested at Time 1 on measures of working memory, IQ, and learning. They were then retested two years later on the learning measures. The findings indicated that working memory capacity and domain-specific knowledge at Time 1, but not IQ, were significant predictors of learning at Time 2. The implications for screening and intervention are discussed
Radioactive contamination of Danish Territory after core-melt accidents at the Barsebäck Power Plant
Power-law behaviour evaluation from foreign exchange market data using a wavelet transform method
Numerous studies in the literature have shown that the dynamics of many time series including observations in foreign exchange markets exhibit scaling behaviours. A simple new statistical approach, derived from the concept of the continuous wavelet transform correlation function (WTCF), is proposed for the evaluation of power-law properties from observed data. The new method reveals that foreign exchange rates obey power-laws and thus belong to the class of self-similarity processes. (C) 2009 Elsevier B.V. All rights reserved
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