Modern semiconductor devices have reached high current and voltage levels, and their power-handling limits can be extended if they are used in multilevel converter configurations. To create high-performance and reliable control designs, however, engineers need in-depth understanding of the characteristics and operation of these topologies. Multilevel Converters for Industrial Applications presents a thorough and comprehensive analysis of multilevel converters with a common DC voltage source. The book offers a novel perspective to help readers understand the principles of the operation of voltage-source multilevel converters as power processors, and their capabilities and limitations. The book begins with an overview of medium-voltage power converters and their applications. It then analyzes the topological characteristics of the diode-clamped multilevel converter, the flying capacitor multilevel converter, and the asymmetric cascaded multilevel converter. For each topology, the authors highlight particular control issues and design trade-offs. They also develop relevant modulation and control strategies. Numerous graphical representations aid in the analysis of the topologies and are useful for beginning the analysis of new multilevel converter topologies. The last two chapters of the book explore two case studies that analyze the behavior of the cascade asymmetric multilevel converter as a distribution static compensator and shunt active power filter, and the behavior of the diode-clamped topology configured as a back-to-back converter. These case studies demonstrate how to address the associated control problems with advanced control and modulation schemes. Examining recent advances, this book provides deep insight on the design of high-power multilevel converters and their applications. It is a valuable reference for anyone interested in medium-voltage power conversion, which is increasingly being used in industry and in renewable energy and distributed generation systems to improve efficiency and operation flexibility.
With contributions from seven of Mexico's finest journalists, this is reportage at its bravest and most necessary - it has the power to change the world's view of their country, and by the force of its truth, to start to heal the country's many sorrows. Supported the Arts Council Grant's for the Arts Programme and by PEN Promotes Veering between carnival and apocalypse, Mexico has in the last ten years become the epicentre of the international drug trade. The so-called "war on drugs" has been a brutal and chaotic failure (more than 160,000 lives have been lost). The drug cartels and the forces of law and order are often in collusion, corruption is everywhere. Life is cheap and inconvenient people - the poor, the unlucky, the honest or the inquisitive - can be "disappeared" leaving not a trace behind (in September 2015, more than 26,798 were officially registered as "not located"). Yet people in all walks of life have refused to give up. Diego Enrique Osorno and Juan Villoro tell stories of teenage prostitution and Mexico's street children. Anabel Hernández and Emiliano Ruiz Parra give chilling accounts of the "disappearance" of forty-three students and the murder of a self-educated land lawyer. Sergio González Rodríguez and Marcela Turati dissect the impact of the violence on the victims and those left behind, while Lydia Cacho contributes a journal of what it is like to live every day of your life under threat of death. Reading these accounts we begin to understand the true nature of the meltdown of democracy, obscured by lurid headlines, and the sheer physical and intellectual courage needed to oppose it.
Winner, 2018 Peter C. Rollins Book Prize, presented by the Northeast Popular/American Culture Association Winner, 2018 Robert K. Martin Book Prize, presented by the Canadian American Studies Association Honorable Mention, 2019 Outstanding Book Award, given by the Latina/o Studies Section of the Latin American Studies Association A re-examination of the Cuban diaspora through the lens of popular culture. In an era of warming relations between the US and Cuba, this book updates the conversation about Cuban America by showing how this community has changed over the past 25 years. No longer a conservative Republican voting bloc, the majority of Cubans today want more engagement with the island instead of less. Laguna investigates the generational shifts and tensions in a Cuban America where the majority is now made up of immigrants who arrived since the 1990s and those born in the US. To probe these changes, Laguna examines the aesthetic and social logics of a wide range of popular culture forms originating in Miami and Cuba from the 1970s through the 2010s. They include the stand-up comedy of performers like Alvarez Guedes and Robertico, a festival called Cuba Nostalgia, Miami morning radio shows, a form of media distribution on the island known as el paquete, and the viral social media content of Los Pichy Boys. This study illustrates the centrality of play in a community that has been described historically as angry, reactionary, and melancholic. Diversión contends that our understanding of the Cuban diaspora is lacking not in seriousness, but in play. By unpacking this archive, Laguna explores our complex, often fraught attachments to popular culture and the way it can challenge and reproduce typical cultural ideologies—especially in relation to politics and race. In the wake of the largest migration wave to the US in Cuban history, Diversión and its focus on play is crucial reading for those who seek to understand not only the Cuban American diaspora, but cultural and economic life on the island.
Este libro reconstruye minuciosamente la trayectoria de la primera organización política popular chilena, el Partido Democrático, desde su nacimiento en 1887 hasta la instauración de la dictadura de Ibáñez en 1927, período durante el cual alcanzó su máxima influencia antes de iniciar su largo y definitivo ocaso. Presenta una visión de conjunto, a la vez que detallada, de la época más importante de la vida de este partido, ofreciendo explicaciones tanto sobre su desarrollo y auge como sobre su integración al sistema parlamentarista, su creciente corrupción, distanciamiento con los movimientos sociales emergentes en la segunda y tercera década del siglo XX e inevitable decadencia.
While Fidel Castro maintained his longtime grip on Cuba, revolutionary scholars and policy analysts turned their attention from how Castro succeeded (and failed), to how Castro himself would be succeeded—by a new government. Among the many questions to be answered was how the new government would deal with the corruption that has become endemic in Cuba. Even though combating corruption cannot be the central aim of post-Castro policy, Sergio Díaz-Briquets and Jorge Pérez-López suggest that, without a strong plan to thwart it, corruption will undermine the new economy, erode support for the new government, and encourage organized crime. In short, unless measures are taken to stem corruption, the new Cuba could be as messy as the old Cuba. Fidel Castro did not bring corruption to Cuba; he merely institutionalized it. Official corruption has crippled Cuba since the colonial period, but Castro's state-run monopolies, cronyism, and lack of accountability have made Cuba one of the world's most corrupt states. The former communist countries in Eastern Europe were also extremely corrupt, and analyses of their transitional periods suggest that those who have taken measures to control corruption have had more successful transitions, regardless of whether the leadership tilted toward socialism or democracy. To that end, Díaz-Briquets and Pérez-López, both Cuban Americans, do not advocate any particular system for Cuba's next government, but instead prescribe uniquely Cuban policies to minimize corruption whatever direction the country takes after Castro. As their work makes clear, averting corruption may be the most critical obstacle in creating a healthy new Cuba.
This book studies how Borges constructs a theory of translation that plays a fundamental role in the development of Argentine literature, and which, in turn, expands the potential for writers in Latin America to create new and innovative literatures through processes of re-reading, rewriting, and mis-translation. The book analyzes Borges's texts in both an Argentine and a transnational context, thus incorporating Borges's ideas into contemporary debates about translation and its relationship to language and aesthetics, Latin American culture and identity, tradition and originality, and center-periphery dichotomies. Furthermore, a central objective of this book is to show that the study of the importance of translation in Borges and of the importance of Borges for translation studies need not be separated. Furthermore, translation studies has much to gain by the inclusion of Latin American thinkers such as Borges, while literary studies has much to gain by in-depth considerations of the role of translation in Latin American literatures. Sergio Waisman is an Assistant Professor of Spanish at The George Washington University.
This book, written accessibly for both biologists and linguists, argues that language is not as exceptional a human trait as some linguists believe it to be. It is rather, according to the authors, just the human version of a fairly common and conservative organic system, the Central Computational Complex.
Confronting organized crime requires an understanding of its workings. The Zeta Yoke is based on legal documents made available by the government of the state of Coahuila, information submited by the National Human Rights Commission and an exhaustive research of other material. This report details how the Zetas controlled northern Coahuila for several years and their interactions with the authorities at various levels. It focuses on this cartel's control of the Piedras Negrasprision and the brutal reprisals in Allende and other local districts following a betrayal, responsibility for which lies at the door of the DEA and Mexico's Federal Police.
This innovative political history provides a new perspective on the enduring question of the origins and nature of the Indian revolts against the Spanish that exploded in the southern Andean highlands in the 1780s. Subverting Colonial Authority focuses on one of the main—but least studied—centers of rebel activity during the age of the Túpac Amaru revolution: the overwhelmingly indigenous Northern Potosí region of present-day Bolivia. Tracing how routine political conflict developed into large-scale violent upheaval, Sergio Serulnikov explores the changing forms of colonial domination and peasant politics in the area from the 1740s (the starting point of large political and economic transformations) through the early 1780s, when a massive insurrection of the highland communities shook the foundations of Spanish rule. Drawing on court records, government papers, personal letters, census documents, and other testimonies from Bolivian and Argentine archives, Subverting Colonial Authority addresses issues that illuminate key aspects of indigenous rebellion, European colonialism, and Andean cultural history. Serulnikov analyzes long-term patterns of social conflict rooted in local political cultures and regionally based power relations. He examines the day-to-day operations of the colonial system of justice within the rural villages as well as the sharp ideological and political strife among colonial ruling groups. Highlighting the emergence of radical modes of anticolonial thought and ethnic cooperation, he argues that Andean peasants were able to overcome entrenched tendencies toward internal dissension and fragmentation in the very process of marshaling both law and force to assert their rights and hold colonial authorities accountable. Along the way, Serulnikov shows, they not only widened the scope of their collective identities but also contradicted colonial ideas of indigenous societies as either secluded cultures or pliant objects of European rule.
To locate the meaning of this book we must go back to the early years of the 20th century. During the rebellion against the dictatorship of Porfirio Díaz and the subsequent stages of the Mexican Revolution, the independent media gained legitimacy because they also fought for freedom of speech, among other freedoms. The Constitution of 1917 acknowledged their role as guarantors of freedom of speech. More then a hundred years later, however, the struggle for freedom of speech continues.
After the modern Mexican state came into being following the Revolution of 1910, hyper-masculine machismo came to be a defining characteristic of "mexicanidad," or Mexican national identity. Virile men (pelados and charros), virtuous prostitutes as mother figures, and minstrel-like gay men were held out as desired and/or abject models not only in governmental rhetoric and propaganda, but also in literature and popular culture, particularly in the cinema. Indeed, cinema provided an especially effective staging ground for the construction of a gendered and sexualized national identity. In this book, Sergio de la Mora offers the first extended analysis of how Mexican cinema has represented masculinities and sexualities and their relationship to national identity from 1950 to 2004. He focuses on three traditional genres (the revolutionary melodrama, the cabaretera [dancehall] prostitution melodrama, and the musical comedy "buddy movie") and one subgenre (the fichera brothel-cabaret comedy) of classic and contemporary cinema. By concentrating on the changing conventions of these genres, de la Mora reveals how Mexican films have both supported and subverted traditional heterosexual norms of Mexican national identity. In particular, his analyses of Mexican cinematic icons Pedro Infante and Gael García Bernal and of Arturo Ripstein's cult film El lugar sin límites illuminate cinema's role in fostering distinct figurations of masculinity, queer spectatorship, and gay male representations. De la Mora completes this exciting interdisciplinary study with an in-depth look at how the Mexican state brought about structural changes in the film industry between 1989 and 1994 through the work of the Mexican Film Institute (IMCINE), paving the way for a renaissance in the national cinema.
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