receiver operating characteristic method
41technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
42Morse code — Chart of the Morse code letters and numerals Morse code is a method of transmitting textual information as a series of on off tones, lights, or clicks that can …
43Poland — Polska redirects here. For other uses, see Polska (disambiguation). This article is about the country. For other uses, see Poland (disambiguation). Republic of Poland Rzeczpospolita Polska …
44Computer security compromised by hardware failure — is a branch of computer security applied to hardware. The objective of computer security includes protection of information and property from theft, corruption, or natural disaster, while allowing the information and property to remain accessible …
45Solar power satellite — A solar power satellite, or SPS or Powersat, as originally proposed would be a satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth. Advantages of placing the solar… …
46Personal computer — This article is about personal computers in general. For computers generally referred to as PCs , see IBM PC compatible. For hardware components dealing with personal computers, see Personal computer hardware. Personal computer An illustration of …
47Cryptography — Secret code redirects here. For the Aya Kamiki album, see Secret Code. Symmetric key cryptography, where the same key is used both for encryption and decryption …
48Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 …
49Wavelength-division multiplexing — For the radio station, see DWDM FM. Multiplex techniques Circuit mode (constant bandwidth) TDM · FDM · SDM Polarization multiplexing Spatial m …
50E-mail spam — E mail spam, also known as bulk e mail or junk e mail, is a subset of spam that involves nearly identical messages sent to numerous recipients by e mail. A common synonym for spam is unsolicited bulk e mail (UBE). Definitions of spam usually… …
