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Nonlinear science (chaos) ( sci.nonlinear )

From [email protected] Thu Feb 18 23:10:53 1993 Path: uunet!bounce-back From: [email protected] (Joe Caddell) Newsgroups: news.announce.newgroups,news.groups,comp.theory.dynamic-sys,sci.fractals,sci.bio,sci.geo.fluids,sci.math,sci.chem,sci.physics,sci.engr,sci.engr.chem,sci.math.stat Subject: RFD: sci.chaos Followup-To: news.groups Date: 15 Feb 1993 19:23:16 -0500 Organization: CSU Stanislaus Lines: 82 Sender: [email protected] Approved: [email protected] Distribution: inet Message-ID: <[email protected]> NNTP-Posting-Host: rodan.uu.net Xref: uunet news.announce.newgroups:3244 news.groups:66730 comp.theory.dynamic-sys:1201 sci.fractals:808 sci.bio:11022 sci.geo.fluids:1096 sci.math:39752 sci.chem:11249 sci.physics:46795 sci.engr:4485 sci.engr.chem:1087 sci.math.stat:5859                R E Q U E S T  F O R  D I S C U S S I O N      This is a Request For Discussion on the creation of a new, unmoderated, newsgroup within which nonlinear dynamical systems, especially those exhibiting chaotic behavior, will be discussed.  The systems may be physical, mathematical or any other type.                  S U G G E S T E D  N A M E                 __________________________                  sci.complexity                 sci.math.nonlinear                 sci.chaos                  S T A T U S                 ___________                  Unmoderated                  B A C K G R O U N D                 ___________________       Within the past decade the study of chaotic behavior in nonlinear dynamical systems has grown enormously in both quantity and depth. At first, chaotic behavior was perceived to be a beautiful, intriguing, yet esoteric phenomenon.  However, recent developments in this exceedingly rich field have brought it to the attention of diverse groups of people ranging from the layman to the mathematician to the physicist to the chemist to the ecologist to the economist to the biologist to the computer scientist to the fluid dynamicist and more.      The interdisciplinary nature of this field is perhaps a unique one and has already brought the above mentioned groups together more coherently than they may have been for a long time.  What are these recent developments?  Aside from the discovery of chaotic behavior in all of these fields, scientists have recently been able to take advantage of the chaotic behavior and use this chaos to better control the system!      So what is chaos?  This may very well be one of the widely discussed topics in this group if it is formed.  However, sensitive dependence on initial conditions is a common definition.  Or some people look at the largest Lyaponuv exponent of the system and if it is positive  that is an indicator that chaos may be present.  Another definition is due to Ferdinand Verhulst in his book  _Nonlinear Differential Equations and Dynamical Systems_ .  That is : "A point x_0 is called an aperiodic point of the mapping f in the equation N_(t+1)=f(N_t) if the orbit of x_0 is bounded and if no k (is an element of)  N exists such that the limit as n -> infinity of f^(nk){x_0} exists. In this case the mapping f is called chaotic." A few more definitions, thanks to David Doff follow:     i)The apparently paradoxical combination of both order and randomness     ii) A deterministic system which exhibits random behavior.     iii) Structured randomness     iv) a system whose predictability decreases as a function of look         ahead time. One of the beautiful things about chaos is the order within perceived disorder.  The orbit is bounded yet never becomes periodic, no matter how long the system runs!                  P U R P O S E                 _____________  To discuss any research being done in this field, to answer any questions people may have about chaotic systems, to announce any seminars, discussions or meetings which may be held concerning chaos, to exchange ideas and try out new ones, to have fun!  While there are already two groups which I am aware of which discuss similar topics, namely comp.theory.dynamic-sys and sci.fractals, there is a definite need for a group which is limited to neither the computational aspect (comp.theory.dynamis-sys), nor fractals (sci.fractals), which while inevitably encountered while studying chaotic systems, many commonly discussed fractals have nothing to do with chaos. For example most fractals in nature( rivers, trees, shorelines etc.) are random. Mathematical fractals(Koch snowflakes etc.) on the other hand are ordered. (Thanks to David Doff for the material on fractals)                  S C H E D U L E  O F  R F D                 ___________________________    This was instigated on February 15 1993 and will last for 30 days.  Assuming a consensus is obtained in that 30 days, we will institute a Call For Votes within 5 days of the end of the RFD period.  The voting will continue for 30 days, ending at 11:59pm (PST) of the 30th day.  Thanks for reading this far, and for participating in this RFD!  From [email protected] Mon Mar 29 20:35:08 1993 Path: uunet!bounce-back From: [email protected] (Joe Caddell) Newsgroups: news.announce.newgroups,news.groups,comp.theory.dynamic-sys,sci.fractals,sci.bio,sci.geo.fluids,sci.math,sci.chem,sci.physics,sci.engr,sci.engr.chem,sci.math.stat,comp.cog-eng,sci.cognitive,comp.ai Subject: 2nd RFD: sci.chaos (or sci.???) Followup-To: news.groups Date: 26 Mar 1993 10:51:35 -0500 Organization: CSU Stanislaus Lines: 93 Sender: [email protected] Approved: [email protected] Distribution: inet Message-ID: <[email protected]> NNTP-Posting-Host: rodan.uu.net Xref: uunet news.announce.newgroups:3369 news.groups:68526 comp.theory.dynamic-sys:1317 sci.fractals:1117 sci.bio:11589 sci.geo.fluids:1159 sci.math:41626 sci.chem:12042 sci.physics:49667 sci.engr:4758 sci.engr.chem:1224 sci.math.stat:6264 comp.cog-eng:2504 sci.cognitive:1261 comp.ai:16092              2nd  R E Q U E S T  F O R  D I S C U S S I O N      This is the 2nd Request For Discussion on the creation of a new,  unmoderated, newsgroup within which nonlinear dynamical systems, especially those exhibiting chaotic behavior, will be discussed.  The systems may be physical, mathematical or any other type.      The only real disagreement has been about what to call the group. The following names have been suggested.  I would like to run an *informal* poll to see what the majority thinks.  Please e-mail your  First choice for the name of this group, should it pass, to:                      [email protected] I will summarize the data to the net sometime before the CFV. If you have other suggestions than the ones below, please feel free to send them.                  S U G G E S T E D  N A M E S                 ____________________________                  sci.complexity                 sci.math.chaos                 sci.math.nonlinear                 sci.chaos                  S T A T U S                 ___________                  Unmoderated                  B A C K G R O U N D                 ___________________       Within the past decade the study of chaotic behavior in nonlinear dynamical systems has grown enormously in both quantity and depth. At first, chaotic behavior was perceived to be a beautiful, intriguing, yet esoteric phenomenon.  However, recent developments in this exceedingly rich field have brought it to the attention of diverse groups of people ranging from the layman to the mathematician to the physicist to the chemist to the ecologist to the economist to the biologist to the computer scientist to the fluid dynamicist and more.      The interdisciplinary nature of this field is perhaps a unique one and has already brought the above mentioned groups together more coherently than they may have been for a long time.  What are these recent developments?  Aside from the discovery of chaotic behavior in all of these fields, scientists have recently been able to take advantage of the chaotic behavior and use this chaos to better control the system!      So what is chaos?  This may very well be one of the widely discussed topics in this group if it is formed.  However, sensitive dependence on initial conditions is a common definition.  Or some people look at the largest Lyaponuv exponent of the system and if it is positive  that is an indicator that chaos may be present.  Another definition is due to Ferdinand Verhulst in his book  _Nonlinear Differential Equations and Dynamical Systems_ .  That is : "A point x_0 is called an aperiodic point of the mapping f in the equation N_(t+1)=f(N_t) if the orbit of x_0 is bounded and if no k (is an element of)  N exists such that the limit as n -> infinity of f^(nk){x_0} exists. In this case the mapping f is called chaotic." A few more definitions, thanks to David Doff follow:     i)The apparently paradoxical combination of both order and randomness     ii) A deterministic system which exhibits random behavior.     iii) Structured randomness     iv) a system whose predictability decreases as a function of look         ahead time. One of the beautiful things about chaos is the order within perceived disorder.  The orbit is bounded yet never becomes periodic, no matter how long the system runs!                  P U R P O S E                 _____________  To discuss any research being done in this field, to answer any questions people may have about chaotic systems, to announce any seminars, discussions or meetings which may be held concerning chaos, to exchange ideas and try out new ones, to have fun!  While there are already two groups which I am aware of which discuss similar topics, namely comp.theory.dynamic-sys and sci.fractals, there is a definite need for a group which is limited to neither the computational aspect (comp.theory.dynamis-sys), nor fractals (sci.fractals), which while inevitably encountered while studying chaotic systems, many commonly discussed fractals have nothing to do with chaos. For example most fractals in nature( rivers, trees, shorelines etc.) are random. Mathematical fractals(Koch snowflakes etc.) on the other hand are ordered. (Thanks to David Doff for the material on fractals)                  S C H E D U L E  O F  R F D                 ___________________________    This was instigated on February 15 1993 and will last for 30 days.  Assuming a consensus is obtained in that 30 days, we will institute a Call For Votes within 5 days of the end of the RFD period.  The voting will continue for 30 days, ending at 11:59pm (PST) of the 30th day.  Thanks for reading this far, and for participating in this RFD!  From [email protected] Thu May  6 14:55:59 1993 Path: uunet!bounce-back From: [email protected] (Joe Caddell) Newsgroups: news.announce.newgroups,news.groups,comp.theory.dynamic-sys,sci.fractals,sci.bio,sci.geo.fluids,sci.math,sci.chem,sci.physics,sci.engr,sci.engr.chem,sci.math.stat,comp.human-factors,sci.cognitive Subject: CFV: sci.nonlinear Followup-To: poster Date: 30 Apr 1993 18:44:12 -0400 Organization: University of California, Davis Lines: 49 Sender: [email protected] Approved: [email protected] Distribution: inet Message-ID: <[email protected]> NNTP-Posting-Host: rodan.uu.net Xref: uunet news.announce.newgroups:3536 news.groups:71237 comp.theory.dynamic-sys:1413 sci.fractals:1359 sci.bio:12023 sci.geo.fluids:1214 sci.math:43336 sci.chem:12745 sci.physics:51500 sci.engr:4990 sci.engr.chem:1389 sci.math.stat:6596 comp.human-factors:4858 sci.cognitive:1438  __________________C F V___________________________________________________  This is a Call For Votes for the creation of the news group sci.nonlinear.  The original RFD had the name as sci.chaos, but after extensive polling, it  has been determined that more people prefer the name sci.nonlinear than  prefer the name sci.chaos.  Therefore this is a vote for sci.nonlinear.  __________________A B S T R A C T_________________________________________  The RFD was instigated on February 15th.  This CFV is being posted on April  30, 1993 and will last until May 31, 1993 23:59 PDT.  To vote *For* the  creation of this group, send e-mail with the message "I vote yes on the  creation of the group sci.nonlinear" to [email protected]  To vote  *Against* the creation of this group, send e-mail with the message "I vote no on the creation of the group sci.nonlinear" to [email protected]  __________________S T A T U S_____________________________________________  Sci.Nonlinear will be an unmoderated group  __________________V O T I N G_____________________________________________  The voting period will last from April 30, 1993 until 23:59 hours PDT on May  31, 1993.                      To vote *FOR* the creation of the group:                   Send a message saying "I vote yes on the creation of the  group sci.nonlinear" to [email protected]                    To vote *AGAINST* the creation of the group:                   Send a message saying "I vote no on the creation of the  group sci.nonlinear" to [email protected]  __________________C H A R T E R___________________________________________  The purpose of this group is to provide a forum for the exchange of ideas in  the area of nonlinear science, to discuss any research being done in this  field, to provide a means for questions to be answered which people may have  concerning nonlinear systems, to announce any conferences, seminars or  meetings which may be held concerning nonlinear systems, to exchange ideas, to try out new ones, and to have fun!  The topics of discussion will include, but not be limited to, chaotic systems.  Any system which is nonlinear in  behavior will be considered as being covered under this charter.  The  expectation, in creating this group, is that people from a wide range of backgrounds that are interested in nonlinear systems will participate in the discussions.  Specifically, it is hoped that theory and experiment will both be involved, as well as a wide variety of disciplines.  From [email protected] Fri Jun 11 15:57:19 1993 Path: uunet!bounce-back From: [email protected] (Joe Caddell) Newsgroups: news.announce.newgroups,news.groups,comp.theory.dynamic-sys,sci.fractals,sci.bio,sci.geo.fluids,sci.math,sci.chem,sci.physics,sci.engr,sci.engr.chem,sci.math.stat,comp.human-factors,sci.cognitive Subject: RESULT: sci.nonlinear passes 216:12 Followup-To: news.groups Date: 11 Jun 1993 15:14:39 -0400 Organization: University of California, Davis Lines: 241 Sender: [email protected] Approved: [email protected] Message-ID: <[email protected]> Xref: uunet news.announce.newgroups:3700 news.groups:73781 comp.theory.dynamic-sys:1532 sci.fractals:1553 sci.bio:12615 sci.geo.fluids:1245 sci.math:45448 sci.chem:13429 sci.physics:54308 sci.engr:5209 sci.engr.chem:1519 sci.math.stat:6935 comp.human-factors:5363 sci.cognitive:1584  Here, Finally are the results from the sci.nonlinear CFV. There were 216 votes for the creation of sci.nonlinear and 12 votes against the creation of sci.nonlinear.  Thus the group passes.   I would like to thank everyone for their patience and participation in this CFV, as well as in the (numerous) name polls.  Enjoy!            Y E S  V O T E S  [email protected] BAMBANG [email protected] Andrew Henry [email protected] Gerhard Sorger [email protected] (Alasdair Allan) [email protected] (Axel Dunkel) [email protected] (Alan Whittaker) [email protected] (Subutai Ahmad) [email protected] Tony Robinson [email protected] Anne L Krauss [email protected] [email protected] Andrew Paice [email protected] (David A Andrews) [email protected] (Anita J. Barnes) [email protected] (The Maverick) [email protected] [email protected] (Aurag Hassan) [email protected] Ari Epstein [email protected] Krishnakumar Badhrinath [email protected] (Satyen Baindur) [email protected] (Stanko Barle) [email protected] sayan bhattacharyya [email protected] [email protected] Steven M. [email protected] Hendrik Boshoff [email protected] (Robert P. Parks) [email protected] [email protected] (Joe Breeden) [email protected] Briand T Sanderson [email protected] (Joe Caddell) [email protected] (Cazelais Gilles) [email protected] (Cazelais Serge) [email protected] [email protected] Chip Harvey [email protected] Toshiro K. Ohsumi [email protected] (Christian Forst) [email protected] cocteau [email protected] Colin Rose [email protected] MAHESH SOMANI [email protected] (Cousineau Daniel-Luc) [email protected] Craig Groeschel [email protected] Colin Bell [email protected] Charlene Riggle [email protected] Christopher M. Rump [email protected] (Craig J. Willits) [email protected] (Dan Schlitt) [email protected] (David D Stretch) [email protected] Eric Edward Moore [email protected] [email protected] Dirk Alboth [email protected] Karl-Heinz Dittberner [email protected] [email protected] David Doshay [email protected] (Lau Hui King) [email protected] (david ozonoff) [email protected] (Dave Wiseman) [email protected] (Kwok-Onn Looi) [email protected] Eric Richards [email protected] (Eric Nelson) [email protected] Erik Schwartz [email protected] (Erlend Helmersen) [email protected] [email protected] (Andrzej Zawadzki) [email protected] (Frederick J. Wicklin) [email protected] (Bob Forrest) [email protected] Hardcore Alaskan [email protected] [email protected] Jacob Galley [email protected] (George Hrabovsky) [email protected] (Gerardo Cisneros) [email protected] gottlieb%[email protected] [email protected] Mike Graham [email protected] (vijay gupta) [email protected] [email protected] (Robert Hanners) [email protected] Michael Hauben [email protected] [email protected] (david holliday) [email protected] (Houston Huckabay) [email protected] Brian Hunt [email protected] (Ilana Stern) [email protected] [email protected] I. Riley Jackson [email protected] Adrian A May [email protected] Dr Jack Jackson [email protected] [email protected] John Frederick Bremer [email protected] John C. Sommerer [email protected] John de Bruyn [email protected] (James D. Meiss) [email protected] (Jim Jewett) [email protected] jonni m. kanerva [email protected] (Johan De Keyser) [email protected] (John W. Cobb) [email protected] (John Gallant) [email protected] (J.R. Smith) [email protected] (Jeffrey Weiss) [email protected] (Kelly D. Crawford) [email protected] Kenneth Herron [email protected] (Kevin McCarty) [email protected] Doug Knowles [email protected] Karl B Radov [email protected] Thomas Kettenring [email protected] (Thomas-Martin Kruel) [email protected] Krishnan P Viswanath [email protected] Kevin Gross [email protected] (Steve Lawrence) [email protected] (Lee Li-Jen Chen) [email protected] (Marc Lefranc) [email protected] (Doris Lehnert) [email protected] (Gilles Lehoux) [email protected] [email protected] Liz Bradley [email protected] Larry London [email protected] Matthew Poole [email protected] (Marek Lugowski) [email protected] Mark Cain [email protected] (Matt Kennel) [email protected] meloon%[email protected] (Brian Meloon) [email protected] Mike Lunney [email protected] (Chris Metzler) [email protected] (Steven Meyers) [email protected] (Manish Butte) [email protected] [email protected] [email protected] [email protected] (Marc Roussel) [email protected] H{m{l{inen Matti Sakari [email protected] David Muir Sharnoff [email protected] (Mukesh Patel) [email protected] (James Murdock) [email protected] (Ranjan S Muttiah) [email protected] (Norman Packard) [email protected] [email protected] [email protected] Venkatesh Parameshwaran (CE) [email protected] [email protected]  Njal Pettit (Prof Wellstead) [email protected] Phil Austin [email protected] (J. Philip Miller) [email protected] (Peter Kootsookos) [email protected] (Phil Diamond) [email protected] Pedro J Mendes [email protected] [email protected] (Peter Kocourek) [email protected] (Luzia Dietsche) [email protected] [email protected] Radford Neal [email protected] [email protected] [email protected] (R. Gudi) [email protected] robert b burrows [email protected] (Malcolm Reeves) [email protected] (Ralph Finch) ritley%[email protected] (Ken Ritley) [email protected] [email protected] (Rhoshel Krystyna Lenroot) [email protected] Risto Kotalampi [email protected] (Ron Nelson) [email protected] [email protected] (Robert Schien) [email protected] (Roger Earl) [email protected] (Ron Williams SGE) [email protected] (Ron Perry) [email protected] Jack GF Hill - Sysop [HOME] [email protected] [email protected] Raymond Rooks, Chemical Eng, UMass [email protected] Rainer Scheuring [email protected] [email protected] Ryan Shelswell [email protected] Saarinen Kari [email protected] Scott Huddleston [email protected] Christopher Seguin [email protected] (Hans Gerwitz) [email protected] David Henry Fetter [email protected] (-Shawn Boles-) [email protected] Soren Hein [email protected] (Alexander Shendi) [email protected] (Troy Shinbrot) [email protected] (Phillip C Simpson) [email protected] Ken Simpson [email protected] (Sinan Karahan) [email protected] [email protected] [email protected] [email protected] Una Smith [email protected] (M. Somville) [email protected] [email protected] J. C. (Clint) Sprott [email protected] [email protected] Craig Steinberger [email protected] [email protected]  David Reeve Sward [email protected] Tobias Fabio Christen [email protected] (Tero Siili, Ilmatieteen laitos / GEO) [email protected] (Terry Anderson) [email protected] J. Ross Thomson [email protected] [email protected] Thomas Becker [email protected] Tom Menten [email protected] (Garry Trahern) [email protected] (James Treacy) [email protected] Whitelaw Mitchell Luke [email protected] (J. Stark) [email protected] (Umberto D'Ortona) [email protected] [email protected] (vicki halliwell) [email protected] [email protected] Wallace Kaufman [email protected] (Kuo-Ray Whu) [email protected] [email protected] BILL SIMPSON [email protected] Wenbin Zhang [email protected] Vijay Parsa [email protected] (Zbigniew Struzik)                     N O  V O T E S  [email protected]  Alex Lopez-Ortiz [email protected] (Dave Joyce) [email protected] Georg Schwarz [email protected] Greg Lindahl [email protected] (J A Stephen Viggiano) [email protected] (Leonard Bohmann) [email protected] [email protected] Nick Ingegneri [email protected] (Richard H. Miller) [email protected] Russ Shermer [email protected] Timothy VanFosson [email protected] (Norman Yarvin)