0000000000225371
AUTHOR
J.c. Moreno
A search for point sources of EeV neutrons
A thorough search of the sky exposed at the Pierre Auger Cosmic Ray Observatory reveals no statistically significant excess of events in any small solid angle that would be indicative of a flux of neutral particles from a discrete source. The search covers from −90◦ to +15◦ in declination using four different energy ranges above 1 EeV (1018 eV). The method used in this search is more sensitive to neutrons than to photons. The upper limit on a neutron flux is derived for a dense grid of directions for each of the four energy ranges. These results constrain scenarios for the production of ultrahigh energy cosmic rays in the Galaxy.
Core Content for Undergraduate Medical Education in Spain: Recommendations of the Instructors’ Group of the Spanish Academy of Dermatology and Venereology (AEDV)
Abstract Background Skin problems are among the most frequent reasons for seeking medical attention in primary care. In recent years, as a result of the process of adapting medical curricula to the requirements of the European Higher Education Area, the amount of time students spend learning the concepts of dermatology has been reduced in many universities. Material and methods In order to reach a consensus on core content for undergraduate education in dermatology, we sent a survey to the 57 members of the instructors’ group of the Spanish Academy of Dermatology and Venereology (AEDV), asking their opinions on what objectives should be set for a dermatology course in Spain. A total of 131 …
Contenidos fundamentales de la Dermatología en el grado de medicina en España. Recomendaciones del grupo de profesores de la Academia Española de Dermatología y Venereología
Antecedentes: Los problemas dermatologicos constituyen uno de los motivos de consulta masfrecuentes en atencion primaria. En los ultimos a˜nos, como consecuencia de la adaptacion alespacio europeo de educacion superior, en muchos planes de estudios se ha reducido el tiempodestinado al aprendizaje de la dermatologia.Material y metodos:Para consensuar los contenidos basicos del programa de dermatologia enel pregrado, se remitio electronicamente una encuesta a los 57 miembros de grupo de profeso-res de la Academia Espa˜nola de Dermatologia y Venereologia para establecer cuales deberianser los objetivos de aprendizaje de la asignatura en Espa˜na. Se incluyeron 131 objetivos previa-mente selecci…
A Robust Predictive Current Control for Three-Phase Grid-Connected Inverters
This paper presents a new predictive control algorithm for grid-connected current-controlled inverters. The control combines a two-sample deadbeat control law with a Luenberger observer to estimate the future value of the grid currents. The resulting control offers robustness against the computational delay inherent in the digital implementation and considerably enhances the gain and phase margins of the previous predictive controls while maintaining the high-speed response typical of the deadbeat controllers.