The construction and assembly of the two half barrels of the ATLAS central electromagnetic calorimeter and their insertion into the barrel cryostat are described. The results of the qualification tests of the calorimeter before installation in the LHC ATLAS pit are given

The construction and beam test results of the ATLAS electromagnetic end-cap calorimeter preproduction module 0 are presented. The stochastic term of the energy resolution is between 10% GeV 1/2 and 12.5% GeV 1/2 over the full pseudorapidity range. Position and angular resolutions are found to be in agreement with simulation. A global constant term of 0.6% is obtained in the pseudorapidity range 2.5 < η < 3.2 (inner wheel).

Musical scores constitute a key element in the development of expertise in musicians from western tonal traditions, since they act as a mediator between the performer and the music itself. Our aim was to study the role of musical scores in instrumental performance practice by analysing the process of learning a new piece of music, as well as the frequency of activities related to that score, taking account of situations when studying alone and with a teacher. Sixteen flute students at two different education levels from conservatoires in Madrid participated in an individual semi-structured interview and completed a rating-scale questionnaire. Categorical analysis from interview data revealed differences between levels in relation to the activities they stated that they engaged in when learning new pieces. Results from the questionnaires showed that although students at both levels worked on playing the musical score correctly, higher-level students seemed to pay special attention to artistic issues. The findings are discussed in relation to previous research, as well as their implications for education.

A 2 metre long prototype of a lead-liquid argon electromagnetic calorimeter with accordionshaped electrodes, conceived as a sector of the barrel calorimeter of the future ATLAS experiment at the LHC, has been tested with electron and pion beams in the energy range 10 to 287 GeV. A sampling term of 10%= p E(GeV) was obtained for electrons in the rapidity range 0 < < 1, while the constant term measured over an area of about 1 m 2 is 0.69%. With a cell size of 2.7 cm the position resolution is about 4 mm= p E(GeV).

Los trabajos sobre comprensión y utilización de las gráficas cartesianas suelen utilizar en sus investigaciones representaciones gráficas muy sencillas y alejadas de las representaciones que utilizan los estudiantes en su trabajo cotidiano. El objetivo del estudio que se presenta aquí ha sido analizar cómo comprenden las gráficas de sus libros de texto los estudiantes de psicología. Para ello hemos propuesto dos tareas: selección de la gráfica más adecuada para los resultados de cuatro experimentos presentados verbalmente y explicación de los resultados de cuatro experimentos presentados gráficamente. Los resultados muestran que los estudiantes de 2º de psicología, aunque seleccionan gráficas acordes con los datos de los experimentos, cometen también errores relacionados con el conocimiento de las variables y su representación figurativa. Por otro lado parecen ser capaces de realizar lecturas conceptuales sencillas sobre los resultados de los experimentos, aunque las características figurativas de las tareas parecen influir en que estas lecturas estén más centradas en descripciones puntuales de los datos. No hemos encontrado apenas estudiantes que hicieran inferencias centradas en las tendencias sintácticas de estas gráficas.