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On April 17, 1975, after five years of civil war, the Khmer Rouge guerrillas invaded Cambodia's major cities and forced the residents on a mass exodus to the countryside. Their leader, Pol Pot, established a government based on terror to bring about his dream of an agrarian society where work was done by hand--without what he believed to be corruptive influences. By the time the Vietnamese captured Phnom Penh and ended this brutal experiment in communism in 1979, an estimated two million Cambodians were dead and hundreds of thousands had begun to flee the country for refugee camps in Thailand. Survivors of Pol Pot and his Khmer Rouge now living in the Midwest tell their stories in this work. Many of them were children during that time, unable to comprehend exactly what was happening and why, but now able to reveal the trauma they experienced. Noeun Nor and Sinn Lok recollect being wrenched from their families and put into labor camps around the age of five. Prum Nath talks about her mother encouraging her to eat the last grains of her family's rice. Sokhary You remembers giving birth on a mountain without a doctor or hospital and using rusty scissors to cut the umbilical cord.
Most people tend to view number theory as the very paradigm of pure mathematics. With the advent of computers, however, number theory has been finding an increasing number of applications in practical settings, such as in cryptography, random number generation, coding theory, and even concert hall acoustics. Yet other applications are still emerging - providing number theorists with some major new areas of opportunity. The 1996 IMA summer program on Emerging Applications of Number Theory was aimed at stimulating further work with some of these newest (and most attractive) applications. Concentration was on number theory's recent links with: (a) wave phenomena in quantum mechanics (more specifically, quantum chaos); and (b) graph theory (especially expander graphs and related spectral theory). This volume contains the contributed papers from that meeting and will be of interest to anyone intrigued by novel applications of modern number-theoretical techniques.
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This book gathers papers presented at the 5th International Conference on Sustainable Design and Manufacturing (SDM-18), held in Gold Coast, Australia in June 2018. The conference covered a wide range of topics, including: sustainable product design and service innovation, sustainable processes and technology for the manufacturing of sustainable products, sustainable manufacturing systems and enterprises, decision support for sustainability, and the study of the societal impact of sustainability including research on the circular economy. The corresponding application areas are wide and varied. The aim of cutting-edge research into sustainable design and manufacturing is to enable the manufacturing industry to grow by adopting more advanced technologies, and at the same time improve its sustainability by reducing its environmental impact. With these goals in mind, the book provides an excellent overview of the latest research and development in the area of Sustainable Design and Manufacturing.
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Water shortages are plaguing communities from coast to coast, and recycled water could help close that gap. In Purified: How Recycled Sewage Is Transforming Our Water, veteran journalist Peter Annin shows that wastewater has become a surprising weapon in America's war against water scarcity. In five water-strapped states--California, Texas, Virginia, Nevada, and Florida--current filtration technology is transforming sewage into something akin to distilled water, free of chemicals and safe to drink. But sensationalist media coverage has repeatedly crippled water recycling efforts. Can public opinion turn in time to avoid the worst consequences? Purified's fast-paced narrative cuts through the fearmongering and misinformation to make the case that recycled water is direly needed in the climate-change era. Water cannot be taken for granted anymore--and that includes sewage.
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