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1 天前 · Social media. Social media are interactive technologies that facilitate the creation, sharing and aggregation of content, ideas, interests, and other forms of expression through virtual communities and networks. [1] [2] Although not unchallenged, [3] [4] common features include: [2] Online platforms that enable users to create and share content ...
6 天前 · The smart grid is an enhancement of the 20th century electrical grid, using two-way communications and distributed so-called intelligent devices. [1] Two-way flows of electricity and information could improve the delivery network. Research is mainly focused on three systems of a smart grid – the infrastructure system, the management system ...
6 天前 · Health informatics is the study and implementation of computer structures and algorithms to improve communication, understanding, and management of medical information.[1] It can be viewed as branch of engineering and applied science. The health domain provides an extremely wide variety of problems that can be tackled using computational ...
4 天前 · Information theory is the mathematical study of the quantification, storage, and communication of information. The field was originally established by the works of Harry Nyquist and Ralph Hartley, in the 1920s, and Claude Shannon in the 1940s.[1]: vii The field, in applied mathematics, is at the intersection of probability theory, statistics ...
3 天前 · Different versions of Wi-Fi are specified by various IEEE 802.11 protocol standards, with different radio technologies determining radio bands, maximum ranges, and speeds that may be achieved. Wi-Fi most commonly uses the 2.4 gigahertz (120 mm) UHF and 5 gigahertz (60 mm) SHF radio bands, with the 6 gigahertz SHF band used in newer generations of the standard; these bands are subdivided into ...
3 天前 · Lorenz cipher machine, used in World War II to encrypt communications of the German High Command Cryptography, or cryptology (from Ancient Greek: κρυπτός, romanized: kryptós "hidden, secret"; and γράφειν graphein, "to write", or -λογία -logia, "study", respectively[1]), is the practice and study of techniques for secure ...
1 天前 · India, officially the Republic of India (ISO: Bhārat Gaṇarājya),[21] is a country in South Asia. It is the seventh-largest country by area; the most populous country as of June 2023;[22][23] and from the time of its independence in 1947, the world's most populous democracy.[24][25][26] Bounded by the Indian Ocean on the south, the Arabian ...
