41. Magma Computational Algebra System Home Page A large, wellsupported software package for computationally hard problems in algebra, number theory, geometry and combinatorics. http://magma.maths.usyd.edu.au/

The Magma Computational Algebra System for Algebra, Number Theory and Geometry Magma is a large, well-supported software package designed to solve computationally hard problems in algebra, number theory, geometry and combinatorics. It provides a mathematically rigorous environment for computing with algebraic, number-theoretic, combinatoric and geometric objects. Recent Notices: August 18, 2005: The programme for the MAGMA Workshop on Group Theory and Algebraic Geometry in Warwick, UK is now available July 8, 2005: Magma V2.12 has been released. Current patch release (September 2, 2005): Magma V2.12 is up to 2.3 times faster than GMP 4.1.4 for large integer multiplication . See also this multivariate GCD comparison involving Magma V2.12 . See the Release Notes for a summary of new features in 2.12. To run Magma under Linux on x86_64 (Opteron, Athlon 64, EM64T) and IA64 (Itanium 2) machines, registered users must now supply us with the MAC addresses of the machines covered by their licence. See this page for details.

42. ECONOMIC THEORY, ANTICIPATORY SYSTEMS AND ARTIFICIAL ADAPTATIVE AGENTS Article proposing an artificial intelligence approach to simulation in economics based on a multiagent system, based on Holland's classifier systems and genetic algorithms. http://www.beje.decon.ufpe.br/rivero/rivero.htm

Recife, June 14th, 1999 Vol. 2 No. 2 ECONOMIC THEORY, ANTICIPATORY SYSTEMS AND ARTIFICIAL ADAPTATIVE AGENTS Graduate Program in Production Engineering , Federal University of Santa Catarina, Brazil rivero@eps.ufsc.br Bernd Heinrich Storb Holder of a Scholarship of CNPq, Federal University of Santa Catarina, Brazil bernd@inf.ufsc.br Raul Sidnei Wazlawick Department of Computer Science and Statistics, Federal University of Santa Catarina, Brazil raul@inf.ufsc.br ABSTRACT Keywords: Multiagent Systems, Economics, Simulation, Classifier Systems, Anticipatory Systems. This article is a modified version of a work presented in the 4th Conference on Information Systems, Analysis and Synthesis - ISAS'98, held at Orlando, FL, in July 12-16, 1998 and first published in its proceedings at pp. 64-69. Contents Introduction Computational Simulation and Economic Theory Causal Systems and Anticipatory Systems The Anticipatory Agents Model Auction Evolution of Rules Conclusions and Future Work Acknowledgements References 1. INTRODUCTION Economic systems can be considered as evolving complex systems where economic agents rationally perform actions in order to reach a better degree of satisfaction. In this way, the agents organize themselves and make decisions about producing, investing and consuming. Those decisions are taken in a context of uncertainty, and they are based on the beliefs (or expectations) that the agents have about possible future states of the environment.

43. Nonlinear Dynamics And Complex Systems Theory (Glossary) Edge of Chaos Emergence Entropy Ergodic system Ergodic theory Evolution MeanField theory In a mean field approximation a system is assumed to be http://www.cna.org/isaac/Glossb.htm

Nonlinear Dynamics and Complex Systems Theory Glossary of Terms A B C D ... Z A Adaptation Algorithmic Complexity Animats Artificial Life ... Autopoiesis B Backpropagation Algorithm Basin of Attraction Bifurcation Boolean Function C Cantor Set Catastrophe Theory Cellular Automata Cellular Games ... Coupled-Map Lattices D Dissipative Structure Dissipative Dynamical Systems E Edge of Chaos Emergence Entropy Ergodic System ... Evolutionary Stable Strategy F Finite Automata Fitness Landscape Flicker (or 1/f) Noise Fractals ... Fuzzy Logic G Game Theory Genetic Algorithms Genetic Programming Genotype H Hausdorff Dimension Hierarchy Holarchy Homoclinic Point ... Hypercycle I Inductive Learning Information Dimension Information Theory Intermittency ... Iterated Function Systems J K Knowledge Representation L Lattice Gas Models Life Game Limit Cycle Lindenmeyer Systems ... Lyapunov Exponent M Markov Process Maximum Entropy Mean-Field Theory Metastability ... Multifractal N Navier-Stokes Equations Neural Networks Nonlinearity NP-Hard Problems ... NP-Complete O Order Parameter P Pattern Recognition Percolation Theory Petri Nets Phase Space ... Punctuated Equilibrium Q Quasiperiodic R Random Boolean Network Reaction Diffusion Models Relativistic Information Theory S Scaling Laws Search Space Self Organization Self Organized Criticality ... Synergetics T Topological Dimension U Ultrametricity Universality Universal Computer Universal Turing Machine ... Unstable Equilibrium Adaptation Any change in the structure or function of an entity (say, a biological organism) that allows it to survive and reproduce more effectively in its environment.

44. ACCREATION OF THE EARTH AND SOLAR SYSTEM: A New Cosmology Copyright 1999, Lawren Introduces a new theory of creation of the Earth and Solar system. http://home.earthlink.net/~meteordust/

New evidence that the Earth is rapidly increasing in size and mass contradicts Laplace's Nebular Hypothesis of Earth's creation, now 200 years old. Accreation (creation by accretion) is presented here as a new concept of planetary creation to replace it. Accreation (creation by accretion) is a byproduct of 35 years of research and study that proved Earth's diameter has expanded rapidly in the past ~200 Ma. In that relatively short period of geologic time all of today's oceans, and most of the water that now fills them, have been created by melting and expansion of Earth's core. (See http://www.expanding-earth.org) The Earth is increasing in size and mass by daily accretion of extraterrestrial meteorites and meteor dustadditional weight that is gravitationally focused on the planet's exact center, thereby generating compressive heat and thermal expansion of the core. (See diagram below) Core expansion is the mechanism causing the Earth to expand, and the rate of expansion accelerates over time as the planet increases in mass by daily bombardment of THOUSANDS OF TONS of meteorites and meteor dust that also adds a thin layer of dust on the surfacewith a 75% chance of falling on some body of water. This is the primary source for the oceans' deep sediment layers that have accumulated over the past ~200 Ma as new ocean seafloors have been generated by volcanic magma extruded via the midocean ridges that now encircle the Earth. The current philosophy of creation of the Earth and Solar System is based on two ancient but closely-related historical documents: (1) The story in Genesis that God created the heavens and earth in six days; and (2) Laplace's Nebular Hypothesis of creation of Earth and other planets of the Solar System that was published in 1796, a period in history when philosophical notions of Nature's wonders had to agree generally with the Bible's teachings.

45. A Science Odyssey: That's My Theory: Freud In this gameshow by the Public Broadcasting system, readers try to guess the identities of three major personality theorists. http://www.pbs.org/wgbh/aso/mytheory/freud/

D Continue... text version of this page Home D Continue... text version of this page Home ... Shop

46. MOTOR THEORY OF LANGUAGE: POWERPOINT PRESENTATION The motor theory proposes that language evolved as an exaptation from the existing complex brain system for motor control. (This is a Powerpoint presentation link to a free viewer provided.) http://www.percepp.demon.co.uk/motheory.htm

Language and Evolution: Homepage Robin Allott MOTOR THEORY OF LANGUAGE: POWERPOINT PRESENTATION Powerpoint presentation Presentation by section: Introduction : Precursors Motor Equivalence: Motor Theory Speech-sound/motor equivalents: System tables Tables (contd) ... Lexicon and Syntax in the brain [Click on screen to move through presentation] [Right click for FullScreen or other actions] OR HTM Transcription from Powerpoint If animations do not work in the Presentation go to: Function words Nouns Verbs [For free VIEWER for the presentation go to Microsoft download page

47. Alternate Temperaments: Theory And Philosophy Introduction to tuning systems, based on the cents system. Written by Terry Blackburn. http://www.rdrop.com/users/tblackb/music/temperament/

Music - Tuning and Temperament THIS PAGE HAS MOVED you will be taken there automatically very soon... Alternate Temperaments: Theory and Philosophy (The beginner's field guide to alternate temperaments) Introduction Very, very brief history Circle of fifths and the harmonic series Do the Math... ... Merchandise! INTRODUCTION: Are you feeling just a bit temperamental? Well! Then this is the place for you! But if you're expecting to determine your sanguine to phlegmatic balance here, I'm sorry to disappoint you. VERY, VERY BRIEF HISTORY Back in the old days (as long ago as yesterday in some circles, but nearly 200 years ago for the most part) instrument tuning was anything but a standard art. Clear back in the days of Pythagoras it was recognized that there are problems with creating a perfectly tuned scale. Over the centuries there have been innumerable attempts to create tuning schemes that preserve the richness of perfectly tuned intervals while minimizing and distributing the errors that naturally occur when doing so. CIRCLE OF FIFTHS AND HARMONIC SERIES We'll talk about this 'error' and where it comes from in a minute. In order to continue, we must make some assumptions: First, you are familiar with the circle of fifths (c g d a e b f# c# g# d# a# (e#)f c). Second, you have a general working knowledge of frequency, harmonics (remember that long spring in physics class?) and the harmonic series.

48. Systems Thinking Systems (General Systems theory GST) there exists a very logical These individuals based their philosophies on General Systems theory (GST). http://www.crossroad.to/Excerpts/community/system-theory.htm

Unfinished Illustrations of the usage of this phrase: Systems Thinking Posted as reference for Creating Community (Part 2) through a New Way of Thinking (Warren and Senge) Creating Community (Part 1) through Transformational Leadership This is an attempt to understand "systems thinking." Bold letters have been added for emphasis throughout this page. Systems (General Systems Theory - GST) : "... there exists a very logical explanation for the esoteric nature of the Drucker/Deming methodology . These individuals based their philosophies on ' General Systems Theory' (GST). GST was originally proposed by Hungarian biologist Ludwig von Bertalanffy in 1928. He proposed that 'a system is characterized by the interactions of its components and the nonlinearity of those interactions.' Kuhn (the originator of the “paradigm shift”) applied the GSP to culture and society, and he saw cultures as interlinking subsystems of a broader planetary society . In 1980, cosmologist Stephen Hawking then expanded systems thinking to the global platform by introducing the 'Chaos Theory' that claims the 'interconnectedness of all things'- (i.e. the beating of a butterfly’s wings in Asia can affect the course of Atlantic hurricanes). As a result

49. Solar System - Celestial Mechanics A theory about the rotation of sun and planets, planetary rings, origin of solar system, solar cycles and climate variations. http://www.heeke.com/franz

Kostenlose Zähler Solar System - Celestial Mechanics Franz Heeke - Muenster / Germany A fluid in a glass rotates, when eccentrically shaken. My hypothesis: such "shaker effects" play an important role in celestial mechanics, driving and controlling the rotation of sun and planets. The mechanism of interaction is described in following Article 1. "Shaker effects" are most probably of influence also on our weather and climate. Eine Fluessigkeit in einem Glas rotiert, wenn sie exzentrisch geschwenkt wird. Meine Hypothese: "Schwenkeffekte" dieser Art spielen eine bedeutende Rolle in der Himmelsmechanik. Sie treiben und steuern die Rotation der Sonne und Planeten, und beeinflussen wahrscheinlich auch unser Klima. Die vermutete Wirkungsweise ist in deutscher Sprache im Article 2 beschrieben. Article-1 Shaker Effects in Celestial Mechanics 1. Shaker Effects - Definition and Explanation 2. Sun's Motion and Sunspots 3. Rotation of Sun and Planets 4. Origin and Structure of the Solar System 5. Shaker Effects and Climate Variations

50. Nonlinear Indicial Prediction Home Page of Nielsen Engineering and Research's indicial prediction system technology. Includes generalized impulse response identification for unsteady aerodynamics, aeroservoelasticity, earthquake engineering, electromagnetics, and nonlinear seakeeping....... http://www.nearinc.com/ips/web2/IPS.html

Welcome to NEAR's Indicial Prediction System home page. By following the links, you will find information on the following: Applications of nonlinear indicial response theory to unsteady aerodynamics modeling System identification using the generalized impulse response function of a nonlinear system Relationship between Volterra series modeling and nonlinear indicial theory (i.e., relationship between nonlinear indicial functions and Volterra kernels) Techniques for unsteady modeling and simulation of multivariate nonlinear systems If you are viewing this text, your browser may lack the ability to handle frames. You may still view all the indicial prediction system pages from the contents page, by clicking on 'Contents' below. Contents

51. Authentication In Distributed Systems: Theory And Practice We describe a theory of authentication and a system that implements it. Our theory is based on the notion of principal and a ‘speaks for’ relation between http://research.microsoft.com/Lampson/45-AuthenticationTheoryAndPractice/Abstrac

Authentication in Distributed Systems: Theory and Practice Citation: B. Lampson, M. Abadi, M. Burrows, and E. Wobber. Authentication in distributed systems: Theory and practice. ACM Trans. Computer Systems , 4 (Nov. 1992), pp 265-310. Links: Postscript Acrobat Web page Word Email: blampson@microsoft.com. This paper is at http://www.research.microsoft.com. Abstract: We describe a theory of authentication and a system that implements it. Our theory is based on the notion of principal and a ‘speaks for’ relation between principals. A simple principal either has a name or is a communication channel; a compound principal can express an adopted role or delegated authority. The theory shows how to reason about a principal’s authority by deducing the other principals that it can speak for; authenticating a channel is one important application. We use the theory to explain many existing and proposed security mechanisms. In particular, we describe the system we have built. It passes principals efficiently as arguments or results of remote procedure calls, and it handles public and shared key encryption, name lookup in a large name space, groups of principals, program loading, delegation, access control, and revocation.

52. ÝÍÖÈÊËÎÏÅÄÈß ÐÅÉÒÈÍÃÀ Mostly in Russian, with one English page on a general theory of rating tournaments. http://www.rt.ustu.ru/

IN ENGLISH ÌÀÐÊÅÒÈÍ ÍÀ TV IN ENGLISH ÌÀÐÊÅÒÈÍ ÍÀ TV

53. Mathematical Systems Theory, Volume 29 331356 BibTeX , Erratum theory of Computing system 31(1) 109 (1998); Jaikumar Radhakrishnan Pi-Sigma-Pi Threshold Formulas. http://www.informatik.uni-trier.de/~ley/db/journals/mst/mst29.html

Mathematical Systems Theory , Volume 29 Volume 29, Number 1, January/February 1996 Catherine C. McGeoch : Experimental Studies of Algorithms. 3-4 BibTeX S. Jesi Giovanni Pighizzini Nicoletta Sabadini : Probabilistic Asynchronous Automata. 5-31 BibTeX Seinosuke Toda : On the Power of Generalized MOD-Classes. 33-46 BibTeX Jarkko Kari : Representation of Reversible Cellular Automata with Block Permutations. 47-61 BibTeX Vikraman Arvind Martin Mundhenk : Upper Bounds for the Complexity of Sparse and Tally Descriptions. 63-94 BibTeX Volume 29, Number 2, March/April 1996 Christos H. Papadimitriou Martha Sideri : The Bisection Width of Grid Graphs. 97-110 BibTeX Kieran T. Herley : Representing Shared Data in Distributed-Memory Parallel Computers. 111-156 BibTeX Spyros Tragoudas : Improved Approximations for the Minimum-Cut Ratio and the Flux. 157-167 BibTeX Giora Slutzki : A Hierarchy of Deterministic Top-Down Tree Transformations. 169-188 BibTeX Volume 29, Number 3, May/June 1996 Jean-Camille Birget : Two-Way Automata and Length-Preserving Homomorphisms. 191-226 BibTeX Wolfgang Golubski Wolfram-Manfred Lippe : Tree-Stack Automata. 227-244

54. ISTP/GGS MAMI This investigation is part of the International Solar Terrestrial Project (ISTP). The program combines satellite and ground based observations with theory and modeling to better understand the energetics and dynamics of the near Earth environment. http://odin.gi.alaska.edu/MAMI/

Modeling of the Atmosphere Magnetosphere Ionosphere System (MAMI) Welcome to the home page of the MAMI investigation at the Geophysical Institute (Space Physics Group) of the University of Alaska , Fairbanks. This investigation is part of the International Solar Terrestrial Project (ISTP) . This program combines satellite and ground based observations with theory and modeling to better understand the energetics and dynamics of the near Earth environment. The MAMI investigation focuses on modeling of the upper atmosphere, using all available data sources. Note: Funding for our ISTP investigation has run out, and although smaller projects involving the satellite images are still going on, this web site is not maintained or updated anymore. Topics: Overview Models AURORA AMIE TIEGCM Examples Image analysis Dynamics Explorer example Isolate the aurora in an image UVI image of sunlit aurora AURORA simulation ... TIEGCM simulation Sample Images from Polar UVI Picture of the Day VIS recent image PIXIE X-ray Image of the Day ISTP/GGS data analysis Introduction List of events Some relevant publications People ... Other related topics Access counter since 27 October 2004: Last updated: 28 October 97 Questions? Comments?

55. The NEITHER Theory Revision System A propositional theory refinement system that will modify a incomplete or incorrect rule base so as to make it consistent with a set of input training examples. Free http://www.cs.utexas.edu/users/ml/neither.html

NEITHER NEITHER is a propositional theory refinement system that will modify a incomplete or incorrect rule base so as to make it consistent with a set of input training examples. NEITHER has been extended to revise both Horn clauses and M-of-N rules. An iterative greedy method is used to efficiently compute repairs. NEITHER has also been used as part of separate system, ASSERT, which performs student modeling. ASSERT (Acquiring Stereotypical Student Errors using Refinement of Theories) is an intelligent tutoring system which inputs a knowledge base describing a domain and a set of student errors on that domain and outputs a tutoring program tailored to fit student needs. Student behavior on the domain is modeled by collecting any refinements to the knowledge base (made by NEITHER) that were necessary to account for the student's behavior. These models are then used to generated feedback which should help raise student peformance on that domain. The complete NEITHER Software System is available via anonymous ftp . This software contains the following items: The ASSERT Tutoring System The CPP System - The specifics of a C++ Tutorial The NEITHER System PFOIL - a propositional FOIL induction system A system introduction and breakdown, including compilation instructions and execution traces.

56. Structure Of Sub-atomic Particles (magnetic Ring Theory) States that there is no electric charge. What we experience is the charge like properties of the subatomic particle which is a dynamical system of spinning magnetic rings. http://www.geocities.com/magneticringtheory/

STRUCTURE OF SUB-ATOMIC PARTICLES (Magnetic Ring Theory) K.M.Doshi, Mumbai, India. doshikm@hotmail.com         1. Preamble Electric Charge emits uniform electric field in all directions around it. So long as the charged particle is stationary there is no difficulty in understanding its emission. However, when it was discovered that a particle has spin and magnetic properties attached to it, things required review about the whole structure of the particle. Discovery of spin and magnetic moment suggests that the particle must be a dynamical system of magnetic fields and its electric charge like properties should be the result of the movements of magnetic fields. Keeping this in view, a dynamical system comprising of a pair magnetic rings spinning around their tangential axis has been evolved. The system emits uniform electric field and appears to be correct replacement of electric charge. More so because such a system has inherent spin and magnetic moment. The proposed theory is conceptually satisfactory and does not need any abstract mathematical  picture.

57. Input/Data Acquisition System Design For Human Computer Interfacing A very good tutorial on the theory and design of various types of sensors for ManMachine interface. http://www-ccrma.stanford.edu/CCRMA/Courses/252/sensors/sensors.html

Next: 1 Introduction Input/Data Acquisition System Design for Human Computer Interfacing William Putnam and R. Benjamin Knapp A gzipped postscript hardcopy version of these notes is available. 1 Introduction 2 General Overview 2.1 The Sensor 2.2 Signal Conditioning ... About this document ... Tim Stilson Thu Oct 17 16:32:33 PDT 1996

58. Digital Systems Research Center: Report 83 Authentication in Distributed systems theory and Practice We describe a theory of authentication and a system that implements it. Our theory is based http://gatekeeper.research.compaq.com/pub/DEC/SRC/research-reports/abstracts/src

SRC Research Report 83 Authentication in Distributed Systems: Theory and Practice Butler Lampson, Martin Abadi, Michael Burrows, Edward Wobber February 4, 1992 We describe a theory of authentication and a system that implements it. Our theory is based on the notion of principal and a "speaks for" relation between principals. A simple principal either has a name or is a communication channel; a compound principal can express an adopted role or delegation of authority. The theory shows how to reason about a principal's authority be deducing the other principals that it can speak for; authenticating a channel is one important application. We use the theory to explain many existing and proposed mechanisms for security. In particular, we describe the system we have built. It passes principals efficiently as arguments or results of remote procedure calls, and it handles public and shared key encryption, name lookup in a large name space, groups of principals, loading programs, delegation, access control, and revocation. Back to the SRC Research Reports main page Download report as: PostScript compressed with UNIX compress 160 Kbytes PostScript compressed with GNU compress (gzip) 128 Kbytes PostScript compressed with ZIP 128 Kbytes PostScript 440 Kbytes Portable Document Format (PDF) 232 Kbytes

59. Unified Theory Of The Nervous System And Behavior New theory that takes the mathematical concept of nerve cell interactions as being a form of mathematics that links neural activity to psychology. http://www.stevenharris.com/theory/

var sc_project=259269; var sc_partition=0; Table of Contents [These essays are designed to be read in this order for best understanding.] Introduction The Common Sense Of This Theory (That, Apparently, Is Not So Common)... Start Your Reading Here, And End Here Temporary Shortcut Form of this Website, A Synopsis What is a Unified Theory of the Nervous System and Behavior? ... Last: A Magic Lesson Daily Theory Applications (The evidence for the right theory is everywhere) About This Section Friday, July 1, 2005 Some Suspect OCD Link to Strep in Kids Wednesday, June 29, 2005 Harvard Chief's Comments on Women Assailed Tuesday, February 8, 2005 Do You Know Your Early Warning Stress Signals? Tuesday, February 1, 2005 Troubled teen contends antidepressants drove him to kill Saturday, January 8, 2005 Early Learning Has Lasting Effects Sunday, December 19, 2004 Children With ADHD Show Brain Differences Unlocking crime: the biological key Saturday, December 18, 2004 Patients warned on painkiller use Interview: Return of a 'beautiful mind' Friday, December 17, 2004

60. John Kim's Styles Of Roleplaying Page John H. Kim's rec.games.frp.advocacy FAQ, dealing with abstract (no one system) and RPG classification issues. http://www.darkshire.net/~jhkim/rpg/theory/

What's New About This Site Site Map What are RPGs? ... Murder Mysteries RPG Theory System Design My Campaigns Convention Reports Links ... Blog RPG THEORY This page covers various attempts to describe RPGs in general terms. There are many sources for advice on role-playing games, but most of these try to promote a "One True Way" of playing. Rather than telling you how to roleplay, this is a collection of articles on what the different ways are and the pros and cons of different choices. Many of the articles here were inspired by discussion on the newsgroup rec.games.frp.advocacy , and more recently by discussion on the web-based bulletin board The Forge PURPOSE AND DEFINITIONS The Purpose of RPG Theory rec.games.frp.advocacy information Selected Text from Major RPGs on Roleplaying new August 1, 2003) Books about Roleplaying and Roleplaying Styles External Links: The Hidden Art: Slouching Towards A Critical Framework for RPGs by Robin D. Laws On The Vocabulary of Role-Playing by Phil Master An Introduction to Recreational Roleplaying by Mark Grundy A Glossary of Selected Role-Playing Terms by John Mack Australian Convention Roleplaying Glossary On Roleplaying Games by Joshua Macy What is a Game?

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