In telecommunications and reliability theory, the term availability has the following meanings:

For example, a unit that is capable of being used 100 hours per week (168 hours) would have an availability of 100/168. However, typical availability values are specified in decimal (such as 0.9998). In high availability applications, a metric known as nines, corresponding to the number of nines following the decimal point, is used. In this system, "five nines" equals 0.99999 (or 99.999%) availability.

Availability of a system is typically measured as a factor of its reliability - as reliability increases, so does availability. However, no system can guarantee 100.000% reliability; and as such, no system can assure 100.000% availability. Further, reliability engineering and maintainability involve processes designed to optimize availability under a set of constraints, such as time and cost-effectiveness. Availability is the goal of most system users, and reliability engineering and maintainability provide the means to assure that availability performance requirements are achieved.

The Partysquad is a Dutch DJ-team. The three members are DJ Jerry (Jerry Leembruggen) , Futtize (Andres Echeverri) and MC Ruben (Ruben Fernhout)

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William Sanford "Bill" Nye (born November 27, 1955), popularly known as Bill Nye the Science Guy, is an American science educator, comedian, television host, actor, mechanical engineer, and scientist. He is best known as the host of the Disney/PBS children's science show Bill Nye the Science Guy (1993–1998) and for his many subsequent appearances in popular media as a science educator.

William Sanford Nye was born in Washington, D.C., the son of Jacqueline (née Jenkins; c. 1920–2000), a codebreaker during World War II, and Edwin Darby "Ned" Nye (died 1997), also a World War II veteran whose experience in a Japanese prisoner of war camp led him to become a sundial enthusiast. Nye is a fourth-generation Washington, D.C. resident on his father's side of the family. After attending Lafayette Elementary and Alice Deal Junior High in the city, he was accepted to the private Sidwell Friends School on a partial scholarship, graduating in 1973. He studied mechanical engineering at Cornell University, where one of his professors was Carl Sagan, and graduated with a Bachelor of Science in 1977. He was awarded an honorary doctorate by The Johns Hopkins University in May 2008. In May 2011, Nye was awarded an Honorary Doctor of Science degree from Willamette University where he was the keynote speaker for that year's commencement exercises.

Kenneth Alfred Ham (born 20 October 1951) is a prominent Australian young-Earth creationist and advocate for a literal interpretation of the Book of Genesis.

Ken Ham obtained a bachelor's degree in Applied Science, with emphasis in Environmental Biology, through the Queensland Institute of Technology and, in order to begin teaching science in Australian public schools, a diploma in Education from the University of Queensland. On 30 December 1972, he married Marilyn ("Mally"), whom he describes as a "very, very submissive, supportive wife" who has "always supported me five million percent." The Ham couple have five children — four are married and one lives with them in the Cincinnati area and have seven grandchildren. In 1979, Ham co-founded what was to be later known as the Creation Science Foundation (CSF) in Queensland, Australia with John Mackay.

Ham worked for the Institute for Creation Research (ICR), a leading young-Earth organisation. In 1994, with the assistance of what is now Creation Ministries International (Australia), Ham and colleagues Mark Looy and Mike Zovath set up Creation Science Ministries, later renamed Answers in Genesis. The Christian ministry specialises in young Earth creationism and promotes the belief that the initial chapters in Genesis should be taken as literally true and historically accurate. He then began raising "tens of millions of dollars" to build the ministry.