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Early Civilizations in the Americas Reference Library, Volume 2Many American history books begin with the year 1492 explorer Christopher Columbus (1451–1506). For the great civilizations of Mesoamerica and South America, though, 1492 proved to be the beginning of the end of their civilization. The products of thousands of years of history—the great cities, the architecture, markets, governments,... | | | | |
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Food SafetyIt is estimated that 20 percent of all emergency room visits are due to foodborne illness. As dietary habits change to include more meals prepared away from home, higher consumption of fresh foods, and more imported foods, the risks of foodborne illness change. Food safety procedures that we learned from our parents may not be sufficient to keep us... | | The Open Source Alternative: Understanding Risks and Leveraging OpportunitiesIn the late 1990s, working as a lawyer in a technology licensing practice, I found more and more of my clients using software provided under a very unusual license. My colleagues at the time advised clients to avoid this kind of software, because although this software was free of charge, it was likely to infringe intellectual property rights and... | | |
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| | | | Digital Watermarking for Digital MediaDigital media, like audio, video, images, and other multimedia documents, can be protected against copyright infringements with invisible, integrated patterns. Such methods are based on steganography and digital watermarking techniques. Most watermarks are inserted as a plain-bit or adjusted digital signal using a key-based embedding algorithm. The... |
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