Rafael: 815 books

This monograph presents a simple and efficient two-relay control algorithm for generation of self-excited oscillations of a desired amplitude and frequency in dynamic systems. Developed by the authors, the two-relay controller consists of two relays switched by the feedback received from a linear...

El ser humano puede estar en silencio por diversos motivos: porque no sabe qué decir, porque duda, está perplejo o asombrado, o porque siente curiosidad. Pero también hay silencio ante el suspense, el miedo o la vergüenza, el dolor o el amor… Hay "minutos de silencio", de relajación y yoga,...

El ser humano hace buenas máquinas, que duran largo tiempo y solucionan diversas necesidades. Otras veces las hace mal, y dejan de funcionar. Entonces se parchean, se arreglan de cualquier modo, para que al menos "parezca" que todavía funcionan. Tirarlas puede avergonzar a su comprador, pues supone...

The United States had a financial and economic crisis during the presidency of Reagan because of the plastic money policy. Those years became the beginning of the citizens credit card debt; however, during the Bush Jr. government, a financial attack happened in United States history, known as 9/11....

During an armed conflict or period of gross human rights violations, the first priority is a cessation of violence. For the cease-fire to be more than a lull in hostilities and atrocities, however, it must be accompanied by a plan for political transition and social reconstruction. Essential to this...

Americans tried to fix the world and neglected the home front, resulting in failure at both ends. Ignorance became fashionable and opportunistic polymorphous predators, parasites, and false prophets took advantage of the situation. It is hard to believe how far the nation fell into violent interracial...

The Black Flags raided their way from southern China into northern Vietnam, competing during the second half of the nineteenth century against other armed migrants and uplands communities for the control of commerce, specifically opium, and natural resources, such as copper. At the edges of three...

Lord Alverley is an exiled English nobleman. The only two people he likes are his ill-fated cousin, Katte, whom he looks on as a brother, and Dorothea Ritter, with whom he falls in love, but can't marry because he already has a wife in England. 

This book deals with a wide range of techniques used in the urban design process. It then goes on to relate these techniques to a unique, comprehensive account of method. A method of urban design is developed which has sustainability and environmental protection at the centre of its philosophy. Previously,...

The 2020 United States presidential race is arguably already over except for about 12 states and 20 counties. If recent presidential election trends are any indication of what will happen in 2020, Democrats in Texas and Republicans in New York might as well stay home on election day because their...

Seeking clarity about the conflict in Ukraine and responding to the urgent need to analyze Europe's energy prospects outside of Russia, Kandiyoti links analysis of real energy infrastructure with analysis of the political and economic dynamics unfolding at local, national, regional, and global levels.

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The essays in this collection reflect two of Martí’s key observations during his time in the United States: first, how did he, an exile living in New York, view and read his North American neighbors from a sociocultural, political and literary perspective? Second, how did his perception of the...