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"Ferreira, Pedro G., author"
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The perfect theory : a century of geniuses and the battle over general relativity
\"At the core of Einstein's general theory of relativity are a set of equations that explain the relationship among gravity, space, and time--possibly the most perfect intellectual achievement of modern physics. For over a century, physicists have been exploring, debating, and at times neglecting Einstein's theory in their quest to uncover the history of the universe, the origin of time, and the evolution of solar systems, stars, and galaxies. In this sweeping narrative of science and culture, Pedro Ferreira explains the theory through the human drama surrounding it: the personal feuds and intellectual battles of the biggest names in twentieth-century physics, from Einstein and Eddington to Hawking and Penrose. We are in the midst of a momentous transformation in modern physics. As scientists look farther and more clearly into space than ever before, The Perfect Theory engagingly reveals the greater relevance of general relativity, showing us where it started, where it has led, and where it can still take us\"-- Provided by publisher.
Book
The Middle East and Brazil
Connections between Brazil and the Middle East have a long history, but the importance of these interactions has been heightened in recent years by the rise of Brazil as a champion of the global south, mass mobilizations in the Arab world and South America, and the cultural renaissance of Afro-descendant Muslims and Arab ethnic identities in the Americas. This groundbreaking collection traces the links between these two regions, describes the emergence of new South-South solidarities, and offers new methodologies for the study of transnationalism, global culture, and international relations.
eBook
Conditional cash transfers : reducing present and future poverty
Conditional cash transfers (CCTs) are programs that transfer cash, generally to poor households, on the condition that those households make pre specified investments in the human capital of their children. This overview of the main report summarizes that there is good evidence that CCTs have improved the lives of poor people. Transfers generally have been well targeted to poor households, have raised consumption levels, and have reduced poverty, by a substantial amount in some countries. Offsetting adjustments that could have blunted the impact of transfers, such as reductions in the labor market participation of beneficiaries, have been relatively modest. The report also considers the rationale for conditioning the transfers on the use of specific health and education services by program beneficiaries. Thus CCTs have increased the likelihood that households will take their children for preventive health checkups, but that has not always led to better child nutritional status; school enrollment rates have increased substantially among program beneficiaries, but there is little evidence of improvements in learning outcomes. These findings suggest that to maximize their potential effects on the accumulation of human capital, CCTs should be combined with other programs to improve the quality of the supply of health and education services, and should provide other supporting services.
eBook