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imported>James F. Perry
(update AOTW)
imported>James F. Perry
(display article "Tux" (winner of AOTW))
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<!-- The above quote appears to often (falsely) be attributed to Dalai Lama. See http://www.snopes.com/inboxer/hoaxes/dalai.asp -->


=== Draft article of the Week <font size=1>[ [[CZ:Article of the Week|about]] ]</font> ===
=== Article of the Week <font size=1>[ [[CZ:Article of the Week|about]] ]</font> ===
[[Image:Liquid_water_simulation.jpg|thumb|right|200px|Snapshot from a simulation of liquid water. The four thin green lines from the molecule in the center of the picture represent hydrogen bonds.]]
[[Image:Linux_Tux_Logo.png|thumb|150px|right|Tux the penguin, the Linux mascot, as he most commonly appears and as originally drawn by Larry Ewing. Also see [[Tux/Gallery|"A pictorial history of Tux".]]]]
In [[chemistry]], a '''hydrogen bond''' is a type of attractive [[intermolecular force]] that exists between two [[partial charge|partial]] [[electric charge]]s of opposite polarity. Although stronger than most other [[intermolecular force]]s, the typical hydrogen bond is much weaker than both the [[ionic bond]] and the [[covalent bond]]. Within [[macromolecule]]s such as [[protein]]s and [[nucleic acid]]s, it can exist between two parts of the same molecule, and figures as an important constraint on such molecules' overall shape.
__NOTOC__


As the name "hydrogen bond" implies, one part of the bond involves a [[hydrogen]] [[atom]]. The hydrogen atom must be attached to one of the elements [[oxygen]], [[nitrogen]] or [[fluorine]], all of which are strongly [[Electronegativity|electronegative]]
'''Tux''' the [[penguin]] is the official logo and cartoon mascot for the [[Linux]] computer [[operating system]]. First drawn in 1996 by Larry Ewing, the fun-loving character has a special place in many people's imaginations, both inside and outside of the global Linux community.
[[heteroatom]]s. These bonding elements are known as the hydrogen-bond ''donor''. This electronegative element attracts the electron cloud from around the hydrogen nucleus and, by decentralizing the cloud, leaves the atom with a positive partial charge. Because of the small size of hydrogen relative to other atoms and molecules, the resulting charge, though only partial, nevertheless represents a large charge density. A hydrogen bond results when this strong positive charge density attracts a [[lone pair]] of electrons on another [[heteroatom]], which becomes the hydrogen-bond ''acceptor''.
 
<font size=1>[[Hydrogen bond|['''more...''']]]</font>
==Quest for a Linux logo==
Tux originated from a discussion on the "Linux kernel" [[mailing list]]. On May 1, 1996, early Linux contributor Matt Hartley began a thread entitled "Linux logo", which included an image by David Christiansen showing the planet Earth as seen from outer space, along with the captions "LINUX" and "Take your computer to another dimension." At one point, [[Linus Torvalds]], the software engineer behind Linux, had casually mentioned his fondness of penguins, and list-users began to rally around the idea.  
<font size=1>[[Tux|['''more...''']]]</font>





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Article of the Week [ about ]

Tux the penguin, the Linux mascot, as he most commonly appears and as originally drawn by Larry Ewing. Also see "A pictorial history of Tux".


Tux the penguin is the official logo and cartoon mascot for the Linux computer operating system. First drawn in 1996 by Larry Ewing, the fun-loving character has a special place in many people's imaginations, both inside and outside of the global Linux community.

Tux originated from a discussion on the "Linux kernel" mailing list. On May 1, 1996, early Linux contributor Matt Hartley began a thread entitled "Linux logo", which included an image by David Christiansen showing the planet Earth as seen from outer space, along with the captions "LINUX" and "Take your computer to another dimension." At one point, Linus Torvalds, the software engineer behind Linux, had casually mentioned his fondness of penguins, and list-users began to rally around the idea. [more...]


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Although bound up with the tradition of the ‘special library’, information management differs from such earlier concepts in its focus on all kinds of information and a concern for the relationship between information provision and organizational performance. In many special libraries there had long been responsibility for managing internal documentation of various kinds, especially research reports. The history of this development is usefully explored by Black, Muddiman and Plant [1] who note the emergence of information management concepts following the end of the First World War, with the formal organization of ‘information bureaux’ in the establishment of ASLIB (the Association of Special Libraries and Information Bureaux) in the UK in 1924. Some techniques, however, were even older, witness Kaiser’s work on indexing [2][3]. Indeed, we can date many of the ideas of what is now called ‘information management’ (although ‘documentation’ is used as a near equivalent in much of Europe) to the founding by Otlet and La Fontaine of the International Institute of Bibliography in 1895 [more...]