RESUMO
We study coherence and entanglement properties of the state space of a composite bi-fermion (two electrons pierced by λ magnetic flux lines) at one Landau site of a bilayer quantum Hall system. In particular, interlayer imbalance and entanglement (and its fluctuations) are analyzed for a set of U(4) coherent (quasiclassical) states generalizing the standard pseudospin U(2) coherent states for the spin-frozen case. The interplay between spin and pseudospin degrees of freedom opens new possibilities with regard to the spin-frozen case. Actually, spin degrees of freedom make interlayer entanglement more effective and robust under perturbations than in the spin-frozen situation, mainly for a large number of flux quanta λ. Interlayer entanglement of an equilibrium thermal state and its dependence with temperature and bias voltage is also studied for a pseudo-Zeeman interaction.
RESUMO
Objetivos: Conocer las opiniones y actitudes de profesores de Institutos de Secundaria de Lugo sobre la enseñanza de la reanimación cardiopulmonar básica (RCP-B) en sus centros. Método: Un cuestionario autoadministrado se hace llegar a 2 institutos de Enseñanza Media de Lugo; consta de 12 preguntas de respuesta cerrada, precedidas de una explicación sobre la muerte súbita, la RCP-B precoz y la desfibrilación precoz. Resultados: De 120 cuestionarios, se cumplimentan 56 (46,6%). De ellos, 11 profesores(19,6%) han asistido alguna vez a un curso de RCP-B. Veintitrés (41,1%) desconocen la existencia de los desfibriladores semiautomáticos (DESA). A 52 (92,95%) les parece interesante que sus alumnos hagan un curso de RCP-B y DESA en el Instituto. El76,8% opina que la enseñanza de la RCP-B sería útil en la Educación Secundaria Obligatoria(ESO); el 57,2% piensan que debería impartirse a partir de 3ºESO. Cuarenta y ocho (85,7%) están interesados en participar en un curso de RCP-B como alumnos. En cuanto al personal idóneo para impartir la RCP-B en los institutos, 46 (82,1%) prefieren que sea personal sanitario. Veintidós profesores (39,3%) están dispuestos a impartir esta materia si se les forma primero. Conclusiones: A la mayoría de los profesores les parece útil incluir la enseñanza de la RCP-B en el currículo de los alumnos de la ESO, y ellos mismos están interesados en recibir esta formación. Aunque la mayor parte prefiere que se imparta por personal sanitario, la mitad de ellos estarían dispuestos a hacerlo si se les entrenase primero (AU)
Objectives: To study the beliefs and attitudes of public secondary school teachers in Lugo, Spain, regarding the teaching of basic cardiopulmonary resuscitation (CPR) in schools. Methods: A self-administered questionnaire was sent to 2 public middle schools in Lugo. The questionnaire contained12 closed-answer items preceded by an explanation of sudden death, early basic CPR, and early defibrillation. Results: Of 120 questionnaires sent, 56 (46.6%) were completed and returned. Eleven teachers (19.6%) had attended a basic CPR course. Twenty-three (41.1%) were unaware of the availability of semiautomatic external defibrillators. Fifty-two(92.95%) considered it would be good for their students to take a basic CPR course and learn to use a semiautomatic external defibrillator. According to 76.8%, it would be good to provide instruction in basic CPR during the course of obligatory secondary school education; 57.2% thought CPR should be taught in the third year of secondary school or higher. Forty-eight (85.7%) expressed interest in taking a basic CPR course themselves, and 46(82.1%) believed such a course would best be taught by health care professionals. Twenty-two teachers (39.3%) said they would be willing to teach the subject if they received prior training. Conclusions: Most teachers consider it useful to include basic CPR in the secondary school curriculum and they are interested in receiving training themselves. Although most prefer that such a course be taught by health care professionals, half of those interested would be willing to serve as instructors after receiving training (AU)