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We consider certain finite sets of circle-valued functions defined on intervals of real numbers and estimate how large the intervals must be for the values of these functions to be uniformly distributed in an approximate way. This is used to establish some general conditions under which a random construction introduced by Katznelson for the integers yields sets that are dense in the Bohr group. We obtain in this way very sparse sets of real numbers (and of integers) on which two different almost periodic functions cannot agree, what makes them amenable to be used in sampling theorems for these functions. These sets can be made as sparse as to have zero asymptotic density or as to be t-sets, i.e., to be sets that intersect any of their translates in a bounded set. Many of these results are proved not only for almost periodic functions but also for classes of functions generated by more general complex exponential functions, including chirps or polynomial phase functions.

La Reanimación Cardiopulmonar es un procedimiento de emergencia realizado a pacientes con parada cardiaca. En la actualidad la evaluación or medio de dispositivos de retroalimentación en tiempo real para evaluar la calidad de reanimación cardiopulmonar en personal experto y no experto es indispensable para impactar favorablemente en la efectividad de estas, al permitir correcciones inmediatas de la técnica empleada durante la reanimación. El objetivo de esta revisión sistemática exploratoria es determinar qué dispositivos existen actualmente para evaluar la calidad de las compresiones torácicas en maniquíes de práctica y su efectividad para lograr compresiones efectivas durante la reanimación cardiopulmonar por medio de un mapeo de la literatura disponible en las bases PUBMED, EMBASE, Web of Science y Mednar.

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