Search results for "HB"
showing 10 items of 1066 documents
ASSESSING NEIGHBORHOOD DISORDER: VALIDATION OF A THREE-FACTOR OBSERVATIONAL SCALE
2015
AbstractThis study presents data on the development and preliminary validation of an observational scale assessing neighborhood disorder. Independent observations by trained raters of neighborhood disorder were conducted in 552 census block groups in the city of Valencia (Spain). Intraclass correlation coefficients assessing inter-rater reliability indicated fair to substantial levels of agreement among raters. Confirmatory factor analyses supported a final three-factor model scale measuring physical disorder, social disorder, and physical decay. Results for the internal consistency showed large composite reliability indices indicating good reliability for all neighborhood disorder factors.…
Evaluación del desorden en los vecindarios: validación de una escala observacional de tres factores
2015
This study presents data on the development and preliminary validation of an observational scale assessing neighborhood disorder. Independent observations by trained raters of neighborhood disorder were conducted in 552 census block groups in the city of Valencia (Spain). Intraclass correlation coefficients assessing inter-rater reliability indicated fair to substantial levels of agreement among raters. Confirmatory factor analyses supported a final three-factor model scale measuring physical disorder, social disorder, and physical decay. Results for the internal consistency showed large composite reliability indices indicating good reliability for all neighborhood disorder factors. Evidenc…
Una svolta qualitativa per l’abitare: quartiere, periferia, città.
2015
Non si può parlare di città senza fare cenno alla casa e al quartiere: è con riferimento a queste due dimensioni che vanno studiate la difficile realtà del disagio abitativo odierno e le cause che lo generano, per far fronte a un’ennesima emergenza aggravata dall’attuale crisi economica. In un periodo in cui urbanisti, architetti ed esperti del settore attribuiscono un ruolo rilevante al tema della rigenerazione e del rammendo urbano, il social housing può offrire scenari interessanti. Fondamentale è il ruolo che i quartieri possono svolgere come generatori di spazi di qualità nella vita quotidiana, offrendo una risposta qualitativa al fabbisogno abitativo. Focalizzando l’attenzione sul ter…
De la ley de barrios al diseño de políticas locales de empleo
2009
(Erm) de Manlleu, localidad de la provincia de Barcelona. La investigación forma parte de un conjunto de acciones integradas llevadas a cabo en el Erm a partir de la aplicación de la denominada Ley de Barrios, impulsada por el Gobierno catalán. La Ley facilita el desarrollo de actuaciones en el ámbito local, especialmente en el terreno urbanístico. Pero, como mostraremos, puede ser también un instrumento eficaz para desarrollar políticas de promoción del empleo ligadas al territorio. Un tipo de políticas que remite a la importancia que viene adquiriendo el ámbito local en cuestiones de empleo; y que se refleja en los numerosos estudios que se realizan en torno a la idea del desarrollo local…
Massive Lesions Classification using Features based on Morphological Lesion Differences
2007
Purpose of this work is the development of an automatic classification system which could be useful for radiologists in the investigation of breast cancer. The software has been designed in the framework of the MAGIC-5 collaboration. In the automatic classification system the suspicious regions with high probability to include a lesion are extracted from the image as regions of interest (ROIs). Each ROI is characterized by some features based on morphological lesion differences. Some classifiers as a Feed Forward Neural Network, a K-Nearest Neighbours and a Support Vector Machine are used to distinguish the pathological records from the healthy ones. The results obtained in terms of sensiti…
Neuronal receptors display cytoskeleton-independent directed motion on the plasma membrane
2018
Summary Directed transport of transmembrane proteins is generally believed to occur via intracellular transport vesicles. However, using single-particle tracking in rat hippocampal neurons with a pH-sensitive quantum dot probe that specifically reports surface movement of receptors, we have identified a subpopulation of neuronal EphB2 receptors that exhibit directed motion between synapses within the plasma membrane itself. This receptor movement occurs independently of the cytoskeleton but is dependent on cholesterol and is regulated by neuronal activity.
The World of Anglo-Saxon Learning
2007
D uring the Anglo-Saxon period, English schools were among the finest in Europe. From English schools came the great masters whose writings instructed generations, centuries even, of Insular and continental students alike: one has only to think of the works of Aldhelm, Bede and Alcuin, which were copied and studied intensively up to the twelfth century and beyond. This achievement is all the more remarkable when one considers that the Anglo-Saxons were among the first peoples in Europe who were obliged to learn Latin as a foreign language if Christianity - a religion of the book par excellence - was to flourish. Throughout the Anglo-Saxon period, English schools benefited from the instructi…
Instability of Equilibrium States for Coupled Heat Reservoirs at Different Temperatures
2007
Abstract We consider quantum systems consisting of a “small” system coupled to two reservoirs (called open systems). We show that such systems have no equilibrium states normal with respect to any state of the decoupled system in which the reservoirs are at different temperatures, provided that either the temperatures or the temperature difference divided by the product of the temperatures are not too small. Our proof involves an elaborate spectral analysis of a general class of generators of the dynamics of open quantum systems, including quantum Liouville operators (“positive temperature Hamiltonians”) which generate the dynamics of the systems under consideration.
Attracteurs de Lorenz de variété instable de dimension arbitraire
1997
Abstract We construct the first examples of flows with robust multidimensional Lorenz-like attractors: the singularity contained in the attractor may have any number of expanding eigenvalues, and the attractor remains transitive in a whole neighbourhood of the initial flow. These attractors support a Sinai-Ruelle-Bowen SRB-measure and, contrary to the usual (low-dimensional) Lorenz models, they have infinite modulus of structural stability.