Artificial cardiac pacemaker
A pacemaker (or artificial pacemaker, so as not to be confused with the heart's natural pacemaker) is a medical device which uses electrical impulses, delivered by electrodes contracting the heart muscles, to regulate the beating of the heart.
The primary purpose of a pacemaker is to maintain an adequate heart rate, either because the heart's natural pacemaker is not fast enough, or because there is a block in the heart's electrical conduction system. Modern pacemakers are externally programmable and allow a cardiologist to select the optimum pacing modes for individual patients. Some combine a pacemaker and defibrillator in a single implantable device. Others have multiple electrodes stimulating differing positions within the heart to improve synchronisation of the lower chambers (ventricles) of the heart.
History
Origin
In 1889, John Alexander MacWilliam reported in the British Medical Journal (BMJ) of his experiments in which application of an electrical impulse to the human heart in asystole caused a ventricular contraction and that a heart rhythm of 60–70 beats per minute could be evoked by impulses applied at spacings equal to 60–70/minute.
Pacemaker (film)
Pacemaker (Hangul: 페이스메이커; RR: Peiseumeikeo) is a 2012 South Korean sports drama film. This was director Kim Dal-joong's feature film debut; he had previously directed stage musicals.Pacemaker received three nominations at the 49th Grand Bell Awards (Best Actor, Best New Director, and Best New Actress).
Plot
Joo Man-ho, a boy from an impoverished family, has a talent for long-distance running but always finishes second place in a race — on purpose, in order to win the box of instant noodles given to runners-up. He grows up to become a national marathoner, but because of an injury, he never becomes a premier athlete and instead hold himself back as he did in his childhood. He is relegated to the role of "pacemaker" – someone who runs alongside the star athletes for three-quarters of the marathon (30 of 42.195 kilometers), making sure they stay on winning pace, but then letting them finish the race alone. Later in life, a cold-hearted marathon coach scouts Joo to run again, this time pacing for Korea's star marathoner at the 2012 London Olympics. This creates an opportunity for Joo to complete his lifetime goal of actually running a full Olympic marathon, but he must first summon the courage and drive to fulfill his dream and run for himself and no one else.
Pacemaker (software)
Pacemaker is an open source high availability resource manager software used on computer clusters since 2004. Until about 2007, it was part of the Linux-HA project, then was split out to be its own project.
It implements several APIs for controlling resources, but its preferred API for this purpose is the Open Cluster Framework resource agent API.
Related software
Pacemaker is generally used with Corosync or Heartbeat.
See also
External links
Sire
Sire is a form of address for reigning kings in the United Kingdom and in Belgium. It has also been used in France, Italy, Germany, Portugal, Sweden and Spain. Historically Sire had a wider usage. During the Middle Ages, Sire was generally used to address a superior, a person of importance or in a position of authority or the nobility in general. The word "sire" and the French "(mon)sieur" share a common etymologic origin, both ultimately being related to the Latin senior.
See also
Sire (disambiguation)
Sire may refer to:
Childe
In the Middle Ages, a childe or child [Old English Cild > "Young Lord"] was the son of a nobleman who had not yet attained knighthood, or had not yet won his spurs. As a rank in chivalry, it was used as a title, e.g. Child Horn in King Horn, as a male progressed through the positions of squire and then knight.
The term is now obsolete, but is still well known from poetry, such as Robert Browning's Childe Roland to the Dark Tower Came and Lord Byron's Childe Harold's Pilgrimage.
In the local dialect of North East Scotland known as Doric a Childe (pronounced cheeil) is the name used that may be directly translated as chap or fellow or man in English . For example a working childe was a working man or chap . A dour childe is dour fellow for example.
Cultural references
The term is used to apply to an expected next stage in human evolution in the Childe Cycle novels by Gordon R. Dickson.
Childe in Stephen King's The Dark Tower is, in Roland Deschain's own words, "...a term that describes a knight - or a gunslinger - on a quest. A formal term, and ancient. We never used it among ourselves...for it means holy, chosen by ka. We never liked to think of ourselves in such terms, and I haven't thought of myself so in many years." (p. 859, The Dark Tower VII: The Dark Tower, Pocket Books, 2006 ed.)
Podcasts:
