Ken Birman
Ken Birman (born November 18, 1955) is a professor in the Department of Computer Science at Cornell University. He is best known for developing the Isis Toolkit, which introduced the virtual synchrony execution model for multicast communication and then and founding a company, Isis Distributed Systems, that used it as the basis for a wide range of robust software solutions for stock exchanges, air traffic control, and factory automation. Although the company no longer exists, Isis operated the New York and Swiss Stock Exchanges for more than a decade, and continues to be actively used in the French air traffic control system and the US Navy AEGIS warship. The technology permits these and other systems to automatically adapt themselves when failures or other disruptions occur, to securely share keys and security policy data, and to replicate critical services so that availability can be maintained even while some system components are down. A new version of the Isis technology, called Vsync, is now available as an open-source free library. Other widely cited systems from his Cornell research effort include the Bimodal Multicast (a probabilistically reliable broadcast protocol that uses the gossip paradigm) and Astrolabe (a scalable tool for monitoring, data mining and managing large systems).
Ken
Ken or KEN may refer to:
Technology
People
See also
Ken (unit)
The ken (間) is a traditional Japanese unit of length, equal to six Japanese feet (shaku). The exact value has varied over time and location but has generally been a little shorter than 2 meters (6 ft 7 in). It is now standardized as 1 9/11meter.
Although mostly supplanted by the metric system, this unit is a common measurement in Japanese architecture, where it is used as a proportion for the intervals between the pillars of traditional-style buildings. In this context, it is commonly translated as "bay". The length also appears in other contexts, such as the standard length of the bō staff in Japanese martial arts and the standard dimensions of the tatami mats. As these are used to cover the floors of most Japanese houses, floor surfaces are still commonly measured not in square meters but in "tatami" which are equivalent to half of a square ken.
Word
Among English loanwords of Japanese origin, both ken and ma are derived from readings of the same character 間.
This kanji graphically combines 門 "door" and 日 "sun". The earlier variant character 閒 was written with 月 "moon" rather than "sun", depicting "A 門 door through the crevice of which the 月 moonshine peeps in".
Ken (singer)
Lee Jae-hwan (Hangul: 이재환, born April 6, 1992), better known by his stage name Ken (Hangul: 켄), is a South Korean singer and actor, signed under Jellyfish Entertainment. He is one of the main vocalists the South Korean boy group VIXX and has been widely praised for his unique, soulful, and husky vocal tone. Ken began his acting career in 2013 in MBC Every 1's comedy drama Boarding House No. 24 as Lee Jaehwan.
Early Life
Born April 6, 1992 in Jayang-dong, Seoul, South Korea, Ken's family consists of his parents, himself and two older brothers. He studied at Baekseok Arts University majoring in Practical Music. At a young age, he entered and won many singing competitions at local festivals. He later performed and won more singing competitions in middle school as part of a team with his friends. He has won multiple song-writing awards prior to debuting with VIXX.
Career
2012-2013: Debut with VIXX, acting debut and OSTs
Despite an absence of any of dance experience, Ken was able to pass his audition to Jellyfish Entertainment because of his singing where he trained for five months before debuting with VIXX. During this time Ken was one of ten trainees who were contestants in Mnet's survival reality show MyDOL and was chosen to be apart of the final line-up and the 6-member boy group finally debuted with "Super Hero" on May 24, 2012 on M! Countdown.
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