Estufa eléctrica de 300, 500 y 800 watios.

Se explica como pueden construir los niños a partir de once años una estufa eléctrica en una escuela rural y de maestro único. Con esta actividad se consigue que los alumnos se aficionen a la electricidad y que el aula, si lo requiere, tenga una fuente de calor con distintas utilidades.

Más de 500 escolares participaron en la X Olimpiada.

Breve repaso a las características de la X Olimpiada escolar celebrada en Quintanar de la Orden (Toledo) en 2006. Se nombran sus organizadores y colegios participantes.

Más de 2.500 actividades para la formación del profesorado.

Docentes de Castilla-La Mancha participarán en el Plan de Formación Permanente del Profesorado de la región, donde se impartirán distintas actividades que contribuirán al desarrollo de la competencia profesional del profesorado.

Perception of speech through a 500 Hz low-pass filter: sensory aids and communication strategies

This paper reviews a study to investigate how a hearing impaired person can learn to discriminate speech distorted by a low pass filter in a sensory aid.

Perception of speech through a 500 Hz low-pass filter: sensory aids and communication strategies

This paper reviews a study to investigate how a hearing impaired person can learn to discriminate speech distorted by a low pass filter in a sensory aid.

A three-regime model of speculative behaviour: modelling the evolution of the S&P 500 composite index

We examine whether a three-regime model that allows for dormant, explosive and collapsing speculative behaviour can explain the dynamics of the S&P 500. We extend existing models of speculative behaviour by including a third regime that allows a bubble to grow at a steady rate, and propose abnormal volume as an indicator of the probable time of bubble collapse. We also examine the financial usefulness of the three-regime model by studying a trading rule formed using inferences from it, whose use leads to higher Sharpe ratios and end of period wealth than from employing existing models or a buy-and-hold strategy.

Croig Cave: a late Bronze Age ornament deposition and 3,500 years of coastal foraging in NW Mull, Scotland

Activity within caves provides an important element of the later prehistoric and historic settlement pattern of western Scotland. This contribution reports on a small-scale excavation within Croig Cave, on the coast of north-west Mull, that exposed a 1.95m sequence of midden deposits and cave floors that dated bewteen c 1700 BC and AD 1400. Midden analysis indicated the processing of a .... 950 BC, a penannular copper bracelet a discrete ritual episode within the cycle of otherwise potentially mundane activities. Lead isotope analysis indicates an Irish origin for the copper ore. A piece of iron slag within later midden deposits, dated to c 400 BC, along with high frequencies of wood charcoal, suggest that smithing or smelting may have occurred within the cave. High zinc levels in the historic levels of the midden c AD 1200 might indicate intensive processing of seaweed.