Problemas de oleohidráulica y neumática

The Inter-American Development Bank (IDB), in cooperation with the International Water Association (IWA), has developed a rating system that assesses the performance of water and sanitation service providers in a comprehensive way. AquaRating: Un estándar internacional para evaluar los servicios de agua y saneamiento aims to provide an industry standard for utilities. The innovative rating system seeks the improvement of the service delivered by means of a rigorous and systematic assessment. AquaRating comprises more than 100 assessment elements organized in eight rating areas: Service...

El presente documento describe paso a paso cómo se realiza el dibujo y diseño de un proyecto vial, principalmente una carretera, y es base para los estudiantes de los cursos de Diseño y Localización de Vías. Así mismo, es el resultado de los trabajos de docencia e investigación realizados por los autores en el desarrollo de estos cursos en los proyectos curriculares de Tecnología en Topografía, Ingeniería Topográfica y Especialización en Diseño de Vías Urbanas, Tránsito y Transporte.

In the 1930s a band of smart and able young men, some still in their twenties, helped Franklin D. Roosevelt transform an American nation in crisis. They were the junior officers of the New Deal. Thomas G. Corcoran, Benjamin V. Cohen, William O. Douglas, Abe Fortas, and James Rowe helped FDR build the modern Democratic Party into a progressive coalition whose command over power and ideas during the next three decades seemed politically invincible. This is the first book about this group of Rooseveltians and their linkage to Lyndon Johnson's Great Society and the Vietnam War debacle. Michael...

Humanity's understanding of the physical world is full of gaps. Not tiny little gaps you can safely ignore -- there are huge yawning voids in our basic notions of how the world works. Jorge Cham and Daniel Whiteson team up to explore everything we don't know about the universe, and while introducing the biggest mysteries in physics, they also helpfully demystify many complicated things we do know. And although the universe is full of weird things that don't make any sense, Cham and Whiteson make a case that the questions we can't answer are as interesting as the ones we can, and they invite...