Four undocumented Mexican American students, two great teachers, one robot-building contest . . . and a major motion picture
In 2004, four Latino teenagers arrived at the National Underwater Robotics Competition at the University of California, Santa Barbara. They were born in Mexico but raised in Phoenix, Arizona, where they attended an underfunded, beat-up public high school. No one had ever suggested to Oscar, Cristian, Luis, or Lorenzo that they might amount to much--but two inspiring science teachers had convinced them that four impoverished, undocumented kids from the desert who had never even seen the ocean should try to build an underwater robot.
And build a robot they did. Their robot wasn't pretty, especially compared to the competition. They were going up against some of the best collegiate engineers in the country, including a team from MIT backed by a $10,000 grant from ExxonMobil. The Phoenix teenagers had scraped together less than $1,000 and built their robot out of scavenged parts. This was never a level competition--and yet, against all odds . . . they won
But this is just the beginning for these four, whose story--which became a key inspiration to the DREAMers movement--will go on to include first-generation college graduations, deportation and bean-picking in Mexico, and service in Afghanistan.
Joshua Davis's "Spare Parts "is a story about overcoming insurmountable odds and four young men who proved they were among the most patriotic and talented Americans in this country--even as the country tried to kick them out.

El volumen mundial de ventas de bienes de coleccion y el numero de coleccionistas ponen de relieve la necesidad y relevancia de analizar este tipo de comportamiento. Tras una exhaustiva revision bibliografica sobre coleccionismo y areas afines, se plantean dos modelos teoricos alternativos, el primer modelo basado en la Teoria del Comportamiento Planeado (Ajzen, 1991) y sus reformulaciones actuales (Smith et al., 2008) y el segundo modelo basado en la Teoria basado en la estructura y fuerza de las actitudes (Petty and Krosnick, 1995). Todo ello, considerando la presencia de segmentos en el mercado que deriva en modelos de comportamiento dispares. Mediante una investigacion empirica, efectuada a la totalidad de la poblacion espanola, se establece el numero de coleccionistas en Espana, se selecciona el modelo de comportamiento mas apropiado y se plantean los determinantes del comportamiento a traves de cuatro segmentos identificados. Finalmente, a partir de los resultados se plantean estrategias de marketing dispares en funcion del segmento de pertenencia."