http://netvouz.com/narky/tag/community-driven?feed=rss narky's bookmarks tagged "community-driven" on Netvouz http://en.wikipedia.org/w/index.php?title=Vector_calculus&oldid=81357662 Vector calculus (also called vector analysis) is a field of mathematics concerned with multivariate real analysis of vectors in two or more dimensions. It consists of a suite of formulas and problem solving techniques very useful for engineering and physics. Vector analysis has its origin in quaternion analysis, and was formulated by the American scientist, J. Willard Gibbs [1]. It concerns vector fields, which associate a vector to every point in space, and scalar fields, which associate a scalar to every point in space. For example, the temperature of a swimming pool is a scalar field: to each point we associate a scalar value of temperature. The water flow in the same pool is a vector field: to each point we associate a velocity vector. Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups narky Tue, 24 Oct 2006 08:44:56 GMT http://www.gossamer-threads.com/lists/mythtv/users/ Heaps of handy stuff on SAMBA sharing and things just type search for SAMBA. User mailing list archive for MythTV. The more general mailing list archive can be found here: http://www.gossamer-threads.com/lists/mythtv/ Computing > HTPC narky Fri, 27 Oct 2006 10:43:53 GMT http://www.laptop.org/ Introducing the children's laptop from One Laptop per Child—a potent learning tool created expressly for the world's poorest children living in its most remote environments. The laptop was designed collaboratively by experts from both academia and industry, bringing to bear both extraordinary talent and many decades of collective field experience in every aspect of this non-profit humanitarian project. The result is a unique harmony of form and function; a flexible, ultra low-cost, power-efficient, responsive, and durable machine with which nations of the emerging world can leapfrog decades of development—immediately transforming the content and quality of their children's learning. Computing narky Mon, 08 Jan 2007 11:57:14 GMT http://www.songbirdnest.com/ Songbird is the world's last desktop media player: it is open source, runs on Windows, Mac and Linux and supports user-contributed extensions because it is built on the same Mozilla platform as Firefox. Songbird is the world's first Web player: Songbird plays music and movies from the Web, shares playlists across the 'net, and automatically synchronizes your music to the online locker of your choice. What would you like Songbird to do? Computing > Software narky Fri, 03 Nov 2006 00:29:16 GMT http://www.designiskinky.net/vent.html Design is Kinky was created by Andrew in mid 1998 in a small flat in Sydney, Australia. His main reason for starting it was simply to get involved in the design community that he saw beginning to grow online. Influenced by sites such as Digitalthread, Zeldman.com, Shift and the K10k crew, as a designer Andrew was excited at the potential that the community showed and decided to jump on board and become a part of it. So over a few sleepless nights Design is Kinky was born. At the time no one was really interviewing designers, Andrew found the few interviews he had read really interesting, so he felt that this would be a good theme to base the site on. The first Profile was on Niko Stumpo, an Italian designer who Andrew greatly admired (and still does). Niko' Design narky Sun, 15 Oct 2006 01:42:46 GMT http://www.realclimate.org/ RealClimate is a commentary site on climate science by working climate scientists for the interested public and journalists. We aim to provide a quick response to developing stories and provide the context sometimes missing in mainstream commentary. The discussion here is restricted to scientific topics and will not get involved in any political or economic implications of the science. Political > Enviromental narky Wed, 25 Oct 2006 01:38:28 GMT http://en.wikipedia.org/wiki/Bijection In mathematics, a bijection, or a bijective function is a function f from a set X to a set Y with the property that, for every y in Y, there is exactly one x in X such that f(x) = y. Alternatively, f is bijective if it is a one-to-one correspondence between those sets; i.e., both one-to-one (injective) and onto (surjective).[1] (See also Bijection, injection and surjection.) Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups narky Mon, 30 Apr 2007 02:38:51 GMT http://en.wikipedia.org/wiki/Bijection%2C_injection_and_surjection In mathematics, injections, surjections and bijections are classes of functions distinguished by the manner in which arguments (input expressions from the domain) and images (output expressions from the codomain) are related or mapped to each other. Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups narky Tue, 01 May 2007 02:47:52 GMT http://en.wikipedia.org/wiki/Fixed_point_property In mathematics, a topological space X has the fixed point property if all continuous mappings from X to X have a fixed point. Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups narky Tue, 01 May 2007 02:50:22 GMT http://en.wikipedia.org/wiki/Fixed-point_theorem In mathematics, a fixed-point theorem is a result saying that a function F will have at least one fixed point (a point x for which F(x) = x), under some conditions on F that can be stated in general terms. Results of this kind are amongst the most generally useful in mathematics. The Banach fixed point theorem gives a general criterion guaranteeing that, if it is satisfied, the procedure of iterating a function yields a fixed point. By contrast, the Brouwer fixed point theorem is a non-constructive result: it says that any continuous function from the closed unit ball in n-dimensional Euclidean space to itself must have a fixed point, but it doesn't describe how to find the fixed point (See also Sperner's lemma). Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups narky Tue, 01 May 2007 02:51:32 GMT