61. From FOLDOC The entropy of a system is related to the amount of information it contains. A highly ordered system can be described using fewer bits of information than a http://foldoc.org/?query=entropy

62. Entropysystems.com www.entropysystems.com/ Similar pages MIT OpenCourseWare Electrical Engineering and Computer Science Maximum-entropy formalism. Thermodynamic equilibrium, temperature. The Second Law of Thermodynamics. Quantum computation. From the course home page Course http://www.entropysystems.com/

Welcome back to entropysystems.com March 30th, 2008 Home Astronomy Cold Fusion Health ... Software Sponsored Results for Entropysystems Leading Science Magazine Scientific American provides latest ... Didn't find what you're looking for? Related Categories Science Home Schooling Chemistry Science Education ... Netincome Ventures Inc. Netincome Ventures Inc. maintains no relationship with third party advertisers. Reference to any specific service or trademark is not controlled by domain owner and does not constitute or imply its association, endorsement or recommendation.

63. Entropy Dashboard Widget entropy uses truerandom bytes from a variety of sources of entropy, including radioactive decay (HotBits random data server at fourmilab.ch), http://entropy.myvnc.com/

Entropy 1.3 Entropy is a Mac OS X Dashboard widget that generates true-random Wifi encryption keys in these formats: WEP, 64-bit, hexadecimal WEP, 128-bit, hexadecimal WEP, 256-bit, hexadecimal WPA-PSK, 8-character, ASCII WPA-PSK, 20-character, ASCII WPA-PSK, 63-character, ASCII As featured in Univers Mac Entropy uses true-random bytes from a variety of sources of entropy, including radioactive decay ( HotBits random data server at fourmilab.ch ), atmpospheric noise ( Random.org random byte generator ), the EntropyPool and your Mac's own /dev/random. For an introduction to the concept of entropy in information theory, or the phenomenon of true-randomness, read this essay at random.org Requires: Mac OS X Tiger A connection to the Internet Changes from 1.2 to 1.3: Andrew Hedges did the beta testing for this release and even suggested many of the features. Have a look at his Dashboard Widgets You can now choose one of four different sources/providers of entropy: radioactive decay/HotBits, atmospheric noise/Random.org, various sources/EntropyPool and /dev/random. Generated keys will be selected automatically (just press Apple+C to copy).

64. Definition: Entropy From Online Medical Dictionary Previous entreat, entrepreneurship, entrochite, entropion, entropionise, entropium Next entropy trapping, entry, entry zone, entypy, enucleate, http://cancerweb.ncl.ac.uk/cgi-bin/omd?entropy

65. Entropy, Order Parameters, And Complexity Statistical Mechanics entropy, Order Parameters, and Complexity Shannon entropy, entropy of Glasses; Life, Heat Death of the Universe, Black Holes http://pages.physics.cornell.edu/sethna/StatMech/

Statistical Mechanics: Entropy, Order Parameters, and Complexity Available as pdf , and from Oxford University Press USA UK, Europe Amazon.com ... Barnes and Noble , and WHSmith (UK) James Sethna Random Walks and Emergent Properties Self-similarity and fractals Temperature and Equilibrium Invariant Measures; Ergodicity Jupiter! and the KAM theorem Entropy Does Entropy Increase? Shannon Entropy, Entropy of Glasses Free Energies and Ensembles Canonical, Grand Canonical, and Gibbs Arrhenius laws and barrier crossing Quantum Statistical Mechanics Bosons: Bose Condensation and Superfluids Fermions: Metals, White Dwarves, Neutron Stars Computational Stat Mech: Ising and Markov Monte Carlo, Metropolis, Wolff Stochastic Chemistry: Cells and Gillespie Networks and Percolation Order Parameters, Broken Symmetry, and Topology Homotopy Theory and Topological Defects Excitations and Goldstone's Theorem Dislocations, Disclinations, and Vortices Deriving New Laws What is a Phase? Symmetry and Analyticity: Landau Correlations, Response, and Dissipation

66. The Page Of Entropy In all of physics, there is perhaps no topic more underrated and misunderstood than entropy. The behavior of large collections of particles, http://webs.morningside.edu/slaven/Physics/entropy/

In all of physics, there is perhaps no topic more underrated and misunderstood than entropy. The behavior of large collections of particles, such as the universe, a grain of sand, or a tuna salad sandwich, is dictated by two universal laws: one involving energy, the other involving entropy. And yet, while energy is described in great detail throughout any introductory physics textbook, entropy is relegated to about two or three pages, and is usually badly described. Well, no more! Here's the real story of physics. Here's what really drives the universe. Here's what your physics instructor won't tell you. Here's entropy The answer is entropy Entropy and poker. Entropy and a box of air. ... Entropy and disorder. Other pages on entropy and the second law While the page you're looking at focuses on the microscopic details of entropy, here's one that focuses on the large scale effects of the second law. The Information Please encyclopedia entry on thermodynamics. If you know of other pages on entropy that I might want to link to, please let me know Back to Dave's Physics Shack If you like "The Page of E n t Ro P y ," why not try Dave's other educational web pages?

67. ENTROPY INTERNATIONAL Producer of coin operated amusement games and parts, as well as coin doors and ticket dispensers. http://www.entropyglobal.com/

68. Entropy entropy is a large scale photography project about Romania undertaken by Tudor Prisacariu. http://www.entropy.ro/

Entropy is a large scale photography project about Romania undertaken by Tudor Prisacariu in 2007. It is an attempt to achieve a better understanding of contemporary Romania and the complex transformation process that it is currently undergoing.

69. Geeking With Greg: Does The Entropy Of Search Logs Indicate That Search Should B The paper, entropy of Search Logs How Hard is Search? With Personalization? With Backoff? (ACM page) covers much of the talk and adds more detail. http://glinden.blogspot.com/2008/02/does-entropy-of-search-logs-indicate.html

skip to main skip to sidebar Geeking with Greg Exploring the future of personalized information Saturday, March 01, 2008 Does the entropy of search logs indicate that search should be easy? Qiaozhu Mei had a fun talk at WSDM 2008 with dramatic, sometimes outlandish, but always thought-provoking statements about web search based on an analysis he did with Ken Church on the Live Search weblogs. The paper, "Entropy of Search Logs: How Hard is Search? With Personalization? With Backoff?" ( ACM page ) covers much of the talk and adds more detail. An excerpt: Although there are lots of pages out there, there are not that many pages that people actually go to ... [We] estimate the entropy of URLs (and queries and IP addresses) based on logs from Microsoft's www.live.com. We find that it takes just 22 bits to guess the next URL (or next query or next IP address). That is ... millions, not billions. Large investments in clusters in the cloud could be wiped out if someone found a way to capture much of the value of billions [of indexed pages] in a small cache of millions. So, this is one of the dramatic, thought-provoking, outlandish claims. Qiaozhu is arguing that analysis how many pages people actually go to in Live Search seems to indicate that a relatively small cache of pages (millions) would be sufficient to capture almost all searchers. During the talk, he took this even further, saying that there might be some possibility of fitting a search index of all the pages you might care about on a flash drive.

70. FREE Techno Music Downloads Download Free Techno Music at entropyMusic.com. No catches just free music! http://www.entropymusic.com/

FREE Techno Music Download Links Free Loops Contact Music Software ... Evanescence Free Techno Music Downloads by Positively Dark Who is Positively Dark? The techno music of Positively Dark is composed by Peter Geisheker and the guitar parts are played by Dino Pacifici. This music is FREE and you may burn it to CD for yourself and for friends and family. Or, show your support and buy their CD "XIIC" If you want to use this music commercially to market a product, for a movie soundtrack, for a video game, etc., please click here to contact Peter Geisheker How to download this music to your computer Right click your mouse button on the file name and then select "Save Target As". Then choose a place on your hard drive where you want to save the file. That's it. NEW SONG! Remains.mp3 Songs from Positively Dark's CD "Pulse" Dawn.mp3 Anna's Theme.mp3 Burn.mp3 Steal.mp3 ... Ocean Run Remix.mp3 CD coming soon... Songs from Positively Dark's CD "XIIC"

71. Entropy Theme • Perishable Press Perishable inverts DOSFX for the entropy theme http://perishablepress.com/press/2005/11/28/entropy-theme/

Jump Menu Content Explore Comments ... DOS_FX theme Screenshot of Entropy on Firefox Download Entropy Related articles Apathy Theme Bananaz Theme Open Casket DOS_FX Theme ... Headline Theme About this article This is article , posted by Perishable on Monday, November 28, 2005 @ 07:07am. Categorized as WordPress , and tagged with download theme WordPress . Updated on November 03, 2007. Visited 8224 times. 0 Responses Bookmark Subscribe Explore ... Finished Theme Drop a comment Name Email Website Comment Comment Policy Comments are open to everyone. Name and email are required. Email kept private, never shared. Website URL optional. The form accepts basic XHTML . Line and paragraph breaks automatic. We reserve the right to edit/delete any comment. Spam will be deleted. "Nice site" comments may be deleted. Please stay on topic and comment intelligently. Thanks. I dofollow commentator links. Subscribe to comments Notify me of follow-up comments via email [or] Subscribe to comments on this post via RSS Search Site Search 322 Subscribers Subscribe to main content Subscribe to all comments Subscribe via email Contact Contact via form Contact via comment Details About Perishable Press Link to Perishable Press Perishable Press Archives Frequently Asked Questions ... Welcome to Dungeon!

72. ONLamp.com -- Calculating Entropy For Data Mining Jan 6, 2005 Paul Meagher explains univariate entropy while analyzing web logs with PHP. http://www.onlamp.com/pub/a/php/2005/01/06/entropy.html

Sign In/My Account View Cart Articles Weblogs ... MySQL Conference and Expo April 14-17, 2008, Santa Clara, CA Listen Print Discuss Subscribe to PHP ... Subscribe to Newsletters Calculating Entropy for Data Mining by Paul Meagher Information theory (IT) is a foundational subject for computer scientists, engineers, statisticians, data miners, biologists, and cognitive scientists. Unfortunately, PHP currently lacks software tools that would make it easy to explore and/or use IT concepts and methods to solve data analytic problems. This two-part series aims to remedy this situation by: Introducing you to foundational information theory concepts. Implementing these foundational concepts as classes using PHP and SQL. Using these classes to mine web data. This introduction will focus on forging theoretical and practical connections between information theory and database theory. An appreciation of these linkages opens up the possibility of using information theory concepts as a foundation for the design of data mining tools. We will take the first steps down that path. Univariate and Bivariate Entropy The central concept of this series is entropy The goal of this article is to explore the descriptive uses of entropy in the context of summarizing web access log data. You will learn how to compute entropy for a single database column of values (i.e., univariate entropy) and what the resulting entropy score means. The goal is to obtain a practical appreciation for what entropy measures in order to tackle inference problems that arise in more complex bivariate and multivariate contexts.

73. Entropy Gradient Reversals Just as the constant increase of entropy is the basic law of the universe, so it is the basic law of life to be ever more highly structured and to struggle http://www.panix.com/userdirs/clocke/EGR/

New! October 17: Writer's Block We Came We Clicked We Yawned RageBoy Rants on Microsoft no lie click the eyeball Microsoft took a look at EGR and decided they liked our style. It's true: there's no accounting for taste. Here's the initial proposal we sent them when they asked what we might do for their "Start" page. The Official Invitation (un)Subscribe Here For Free! Here Comes the New Media! Meet the Editor ... The Early Years - We Smell A Rat "If you can digest all of RageBoy's angry prose, we have some James Joyce for you to translate into ancient Incan." -Howard Greenstein writing in Larry Chase's Web Digest For Marketers ...lest we forget The Kontent! meanwhile, what the critics are saying about EGR... "lethal" the gate "passion-driven" microsoft "a visionary e-zine" sun microsystems press "EGR - [zine]" www acronym server "get it, live it, love it" t@p online "biting sarcasm" 4work.com "no-holds-barred, in your face web journalism" callahan "RageBoy® - web virtuoso run amok"

74. Physics News Update Number 469 - Story DIGITAL ENTROPY DIGITAL entropy How much information does it take to control something? By combining thermodynamics with information theory, MIT researchers (contact Seth http://www.aip.org/pnu/2000/split/pnu469-1.htm

SEARCH AIP Number 469 (Story #1), February 2, 2000 by Phillip F. Schewe and Ben Stein DIGITAL ENTROPY How much information does it take to control something? By combining thermodynamics with information theory, MIT researchers (contact Seth Lloyd, 617-252-1803, slloyd@mit.edu) have determined the minimum amount of information one needs to bring an unruly object under control, providing quantitative answers to such subjects as taming chaos. From the perspective of thermodynamics, controlling an object means reducing its disorder, or entropy. Lowering the disorder of a hot gas, for example, decreases the number of possible microscopic arrangements in the gas. This in turn removes some of the uncertainty from the gas's detailed properties. According to information theory, this reduced uncertainty is tantamount to increased information about the gas. Applying this "digital entropy" perspective to the notion of control, the researchers found that controlling an object becomes possible when one acquires enough information about it (and then applies this information to the object) to keep the uncertainties in its properties at manageable levels. Chaotic systems are particularly hard to control because they constantly manifest new amounts of uncertainty in their properties. Perhaps there is no better everyday example of chaos than steering a car: a tiny change in steering can quickly be amplified into a huge change in course. For example, if a blindfolded driver initially knows that her car is within two feet from a curb, tiny fluctuations in steering can make this uncertainty 4 feet after one second, 8 feet after two seconds, and so on. Only if the driver receives second-by-second instructions for adjusting the steering to keep the uncertainty down to the two-feet level does she have any hope of controlling it. If the driver makes such steering adjustments only half as frequently, her car will go out of control (crash into the curb) but it will take exactly twice the amount of time than if no adjustments were made. (

75. Entropy: Thermodynamics, Physics entropy is for many people one of the most confusing topics that they hit in introductory physics. Most introductory physics terms like energy, velocity, http://www4.ncsu.edu/unity/lockers/users/f/felder/public/kenny/papers/entropy.ht

Requires Fonts Things Fall Apart An Introduction to Entropy by Gary Felder Entropy is for many people one of the most confusing topics that they hit in introductory physics. Most introductory physics terms like energy, velocity, and temperature refer to things that we are familiar with in our day to day life and have built some intuition for. Few people start taking physics with any intuition for entropy, however. Many popular science books and articles discuss entropy, though, usually equating it with "disorder" and noting that according to the laws of physics disorder and ther efore entropy must always increase. Such accounts rarely in my experience make any attempt to define what is meant by disorder or how you would measure whether it is increasing or decreasing. Entropy is a well-defined quantity in physics, however, and the definition is fairly simple. The statement that entropy always increases can be derived from simple arguments, but it has dramatic consequences. In particular this statement explains many pro cesses that we see occurring in the world irreversibly.

76. BBC NEWS | Science/Nature | Beads Of Doubt The law of entropy, or the Second Law of Thermodynamics, The Second Law states that the entropy or disorder - of a closed system always increases. http://news.bbc.co.uk/1/hi/sci/tech/2135779.stm

CATEGORIES TV RADIO COMMUNICATE ... INDEX SEARCH You are in: Science/Nature News Front Page World UK ... Programmes SERVICES Daily E-mail News Ticker Mobile/PDAs Text Only ... Help EDITIONS Change to World Thursday, 18 July, 2002, 11:09 GMT 12:09 UK Beads of doubt Future vision: Nano-subs would seek and destroy cancer (Image by Science Photo Library) By Dr David Whitehouse BBC News Online science editor One of the most important principles of physics, that disorder, or entropy, always increases, has been shown to be untrue. This result has profound consequences for any chemical or physical process that occurs over short times and in small regions ANU team Scientists at the Australian National University (ANU) have carried out an experiment involving lasers and microscopic beads that disobeys the so-called Second Law of Thermodynamics, something many scientists had considered impossible. The finding has implications for nanotechnology - the design and construction of molecular machines. They may not work as expected. It may also help scientists better understand DNA and proteins, molecules that form the basis of life and whose behaviour in some circumstances is not fully explained.

77. Orange Entropy Records Orange entropy Records online record store click to enter our online record and music store page designed and maintained by Orange entropy Records. http://www.orangeentropy.com/

click to enter our online record and music store (Independent Record Label) SELL YOUR MUSIC COLLECTION!! page designed and maintained by Orange Entropy Records

78. The OpenNLP Maxent Homepage This web page contains some details about maximum entropy and using the opennlp.maxent package. It is updated only periodically, so check out the http://maxent.sourceforge.net/

Home The opennlp.maxent package is a mature Java package for training and using maximum entropy models. This web page contains some details about maximum entropy and using the opennlp.maxent package. It is updated only periodically, so check out the Sourceforge page for Maxent for the latest news. You can also ask questions and join in discussions on the forums Download the latest version of maxent. Home About HOWTO Download ... CVS Email: tsmorton@users.sourceforge.net

79. Entropy First of all, let s see exactly why the increasing uncertainty of the velocities of the atoms doesn t create enough entropy to counteract the decreasing http://math.ucr.edu/home/baez/entropy.html

Can Gravity Decrease Entropy? John Baez August 7, 2000 If you weren't careful, you might think gravity could violate the 2nd law of thermodynamics. Start with a bunch of gas in outer space. Suppose it's homogeneously distributed. If it's big enough, it will start clumping up thanks to its gravitational self-attraction. So starting from complete disorder, it looks like we're getting some order! Doesn't this mean that the entropy of the gas is dropping? Well, it's a bit trickier than you might think. First of all, you have to remember that a gas cloud heats up as it collapses gravitationally! The clumping means you know more and more about the positions of the atoms in the cloud. But the heating up means you know less and less about their velocities. So there are two competing effects. It's not obvious which one wins! Let's do a little calculation to see how this works. The trick is to keep things simple so we can easily see what's going on. This requires some idealizations. Entropy Calculation - Part 1 We'll assume a ball of some ideal gas with volume V and a total of N identical gas atoms in it. We assume these atoms interact only gravitationally, and we use Newtonian physics everywhere. We'll start out by assuming that the cloud is "virialized", meaning that the kinetic energy K and potential energy P are related by

80. Editor's Daily Blog: Entropy I interpret entropy to mean that the wind could not possibly have left my room neater than it was. entropy also argues in favor of refactoring. http://weblogs.java.net/blog/editors/archives/2003/11/entropy.html

User: Password: Register Login help My pages Projects ... java.net Get Involved java-net Project Request a Project Project Help Wanted Ads Publicize your Project ... Submit Content Get Informed About java.net Articles Blogs Events ... java.net Archives Get Connected java.net Forums Wiki and Javapedia People Partners , and Jobs Java User Groups RSS Feeds Search Web and Projects: Online Books: Advanced Search Editor's Daily Blog Main Entropy Posted by daniel on November 13, 2003 at 08:18 AM Comments (2) Last night we had high winds in the midwest. Our house lost a piece of gutter and my office window blew open scattering papers everywhere. I interpret entropy to mean that the wind could not possibly have left my room neater than it was. Entropy also argues in favor of refactoring. Sure there are arguments against refactoring and we pointed to them this summer when the debate heated up after Bob Cringely wrote an article based on correspondence with Paul Tyma . Tyma wrote "'Cleaning up code' is a terrible thing. Redesigning WORKING code into different WORKING code (also known as refactoring) is terrible. The reason is that once you touch WORKING code, it becomes NON-WORKING code, and the changes you make (once you get it working again) will never be known. " And yet I look at the loose papers covering my floor. Everything I need is there. It is possible, if I take the time to organize these papers into piles and folders that I will spend time on pages that I will never need to look at again. Perhaps that time is wasted. But when it comes time for me to find something I need, I'd like to be able to put my hand right on it.

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