News Feature: Code wars
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چکیده
منابع مشابه
News Feature: Code wars
In October 2014, an Antares rocket blasted off from a NASA launch pad on one of Virginia’s barrier islands, and exploded seconds later. In addition to about 5,000 pounds of food and equipment destined for the International Space Station, the doomed rocket was carrying 26 miniature satellites called CubeSats, one of which housed physicist Alexander Ling’s experiment. “We thought, ‘oh, that’s it,...
متن کاملCode Wars : Steganography , Signals Intelligence , and
This paper describes and discusses the process of secret communication known as steganography. The argument advanced here is that terrorists are unlikely to be employing digital steganography to facilitate secret intra-group communication as has been claimed. This is because terrorist use of digital steganography is both technically and operationally implausible. The position adopted in this pa...
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WhenMichael Postow started his fellowship training in medical oncology at the Memorial Sloan Kettering Cancer Center (MSKCC) in 2010, he wasn’t familiar with the term “abscopal.” Coined decades before he was born and then largely forgotten by physicians, it describes a phenomenon in which radiation delivered at one site in the body has an effect on distant tissues that are, literally, “outside”...
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Before NASA launched its Viking landers to Mars in 1975, Carl Sagan suggested that the Red Planet might harbor “organisms ranging in size from ants to polar bears.” Afterward, he acknowledged that nothing in the landers’ images could be taken as a sign of advanced life. There was one rock, however, that appeared to be inscribed with the letter “B.” But Sagan held off on any sort of celebration....
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The miniature craft cruises silently through a blood vessel. Sneaking through a hole in the vessel wall, it infiltrates a tumor and uses an on-board antibody key to gain entry into a cancer cell. Once inside, the sleek ship deploys its anticancer cargo to destroy the tumor. Mission accomplished. This vision of nanomedicine, commonly portrayed in animations from the early 2000s, promised that na...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2017
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1702236114