A forgotten little chapter on isoperimetric inequalities. On the fraction of a convex and closed plane area lying outside a circle with which it shares a diameter

[EN]Often some interesting or simply curious points are left out when developing a theory. It seems that one of them is the existence of an upper bound for the fraction of area of a convex and closed plane area lying outside a circle with which it shares a diameter, a problem stemming from the theory of isoperimetric inequalities. In this paper such a bound is constructed and shown to be attained for a particular area. It is also shown that convexity is a necessary condition in order to avoid the whole area lying outside the circle

Diseño, construcción y pruebas de un sistema de arranque para el experimento articulado de control en un plano

[ES] Diseño de un mecanismo para simular condiciones iniciales variables en la realización de experimentos por las Fuerzas Armadas de Estados Unidos, en California, sobre Estructuras Flexibles en el Espacio.