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A Stirling engine is a heat engine that is operated by the cyclic expansion and contraction of air or other gas (the working fluid) by exposing it to different temperatures, resulting in a net conversion of heat energy to mechanical work. [1] [2] More specifically, the Stirling engine is a closed-cycle regenerative heat engine, with a permanent ...
e. The Winchester Mystery House is a mansion in San Jose, California, that was once the personal residence of Sarah Winchester, the widow of firearms magnate William Wirt Winchester. The house became a tourist attraction nine months after Winchester's death in 1922. The Victorian and Gothic-style mansion is renowned for its size and its ...
Genre (s) Survival horror, MMORPG. Mode (s) Single-player, multiplayer. Dead Frontier is a free-to-play, browser-based survival horror game which takes place in a post-apocalyptic, zombie-infested setting. It is operated by Creaky Corpse Ltd. [1] [2] Dead Frontier was released for open beta on April 21, 2008, [3] [4] and has over ten million ...
Hexspeak. Hexspeak is a novelty form of variant English spelling using the hexadecimal digits. Created by programmers as memorable magic numbers, hexspeak words can serve as a clear and unique identifier with which to mark memory or data. Hexadecimal notation represents numbers using the 16 digits 0123456789ABCDEF.
PBKDF2 applies a pseudorandom function, such as hash-based message authentication code (HMAC), to the input password or passphrase along with a salt value and repeats the process many times to produce a derived key, which can then be used as a cryptographic key in subsequent operations. The added computational work makes password cracking much ...
A non-primary key that can be used to identify only one row in a table. Alternate keys may be used like a primary key in a single-table select. Foreign. A key that has migrated to another entity. At the most basic definition, "a key is a unique identifier", [1] so unique key is a pleonasm. Keys that are within their originating entity are ...
The greater roadrunner is about 52–62 cm (20–24 in) long, has a 43–61 cm (17–24 in) wingspan and weighs 221–538 g (7.8–19.0 oz). It stands around 25–30 cm ( – in) tall and is the largest cuckoo of the Americas. [13] [14] [15] The upper body is mostly brown with black streaks and sometimes pink spots. The neck and upper breast ...
Frederick Jackson Turner. " The Significance of the Frontier in American History " is a seminal essay by the American historian Frederick Jackson Turner which advanced the Frontier thesis of American history. Turner's thesis had a significant impact on how people in the late 19th and early 20th centuries understood American identity, character ...