121. Visualizing The Global Topology Of The MBone Visualizing the Global topology of the MBone. Abstract. We present a casestudy of visualizing the global topology of the Internet MBone. http://graphics.stanford.edu/papers/mbone/

Visualizing the Global Topology of the MBone Tamara Munzner and Eric Hoffman and K. Claffy and Bill Fenner Proceedings of the 1996 IEEE Symposium on Information Visualization , pp. 85-92, October 28-29 1996, San Francisco, CA, 1996. Abstract We present a case study of visualizing the global topology of the Internet MBone. The MBone is the Internet's multicast backbone. Multicast is the most efficient way of distributing data from one sender to multiple receivers with minimal packet duplication. Developed and initially deployed by researchers within the Internet community, the MBone has been extremely popular for efficient transmission across the Internet of real-time video and audio streams such as conferences, meetings, congressional sessions, and NASA shuttle launches. The MBone, like the Internet itself, grew exponentially with no central authority. The resulting suboptimal topology is of growing concern to network providers and the multicast research community. We create a geographic representation of the tunnel structure as arcs on a globe by resolving the latitude and longitude of MBone routers. The interactive 3D maps permit an immediate understanding of the global structure unavailable from the data in its original form as lines of text with only hostnames and IP addresses. Data visualization techniques such as grouping and thresholding allow further analysis of specific aspects of the MBone topology. We distribute the interactive 3D maps through the World-Wide Web using the VRML file format, thus allowing network maintainers throughout the world to analyze the structure more effectively than would be possible with still pictures or pre-made videos.

122. ANU - Mathematical Sciences Institute (MSI) - Events - Special Year 2003 Australian National University, Canberra; 2003. http://wwwmaths.anu.edu.au/events/specialyear-2003/

Skip Navigation ANU Home Search ANU Mathematical Sciences Institute (MSI) Events - Special Year 2003 MSI Home People Research Study ... Jobs Special Year 2003 Home Events Programs Participants ... Algebra and Topology Program MSI Intranet Internal pages Quick Links Search MSI Contact us Special Year on Algebraic Geometry and Topology with partial financial support provided by the Australian Mathematical Sciences Institute The year 2003 is a Special Year on Algebraic Geometry and Topology within the Mathematical Sciences Institute There have been some major events during this year, such as conferences, workshops and symposia. However, the Special Year is also a chance for local, national and international mathematicians to simply get together. Programs are available for the Workshop on Representation Theory , the Conference on Topology , and the Minimal Models Activity . There is also a map of locations including further accommodation and visitor details (1.1MB PDF file). Amnon Neeman Amnon.Neeman@maths.anu.edu.au Organizer Privacy Contact ANU Page last updated: 2 October, 2003

123. Fibre Channel--->University Of Minnesota Provides information about the FC protocol (FC Basics), fabric architecture and topology design (Configuration Toolkit), and performance (Library). http://www.borg.umn.edu/fc/

T he Fibre Channel Group used to be a collection of Graduate and Undergraduate students at the University of Minnesota. FC is a gigabit interconnect technology which allows concurrent communication between workstations and data storage systems using common protocols such as SCSI and IP. Our website provides information about the FC protocol (FC Basics), fabric architecture and topology design (Configuration Toolkit), and performance (Library). Due to graduation, the group is more or less disbanded, at least for the moment. Some updates will still occur since Staffan Strand (Contact: strand@borg.umn.edu) is still working on his PhD thesis. T he Fibre Channel Group was financially supported solely by Brocade Communications of San Jose, California, a leading provider of storage area networking technology. iSCSI NICs vs FC HBA Performance White Paper Release 11/16/03 SANTK 4.0 Release: 1/24/03 SANTK 4.0 Beta Release: 11/15/02 SANTK 4.0 Prebeta Release: 8/29/02 ... Contact Us

124. Topology intertwingly. It s just data. topology. By Sam Ruby, March 11, 2003. Preface topology Pronunciation Key (t p l -j ) n. pl. topologies. http://intertwingly.net/stories/2003/03/11/topology.html

intertwingly It's just data Topology By Sam Ruby, March 11, 2003. The essay explores, in a rather whimsical way, the fundamental message exchange patterns that make up web like interactions. Preface topology Pronunciation Key (t -p l -j n. pl. topologies Topographic study of a given place, especially the history of a region as indicated by its topography. Medicine. The anatomical structure of a specific area or part of the body. Mathematics. The study of the properties of geometric figures or solids that are not changed by homeomorphisms, such as stretching or bending. Donuts and picture frames are topologically equivalent, for example. Computer Science. The arrangement in which the nodes of a LAN are connected to each other. Genesis Fifteen billion or so years ago, the entire known universe was compressed into the confines of an atomic nucleus known as a singularity. From this point emanated information in all possible frequencies. The number of frequencies emanated, when expressed in decimal notation, was estimated to be a 1 followed by some 100 zeros. For this reason, some called this point Google, but this later turned out to be a misnomer. To select an individual resource out of all of this noise required essentially no effort on the part of the receiver as all the data was omnipresent on the ether. One merely selected the frequency one desired. The points on the radio dial were labeled, for obvious reasons, Universal Resource Identifiers, or more commonly

125. Texas Geometry And Topology Conference Texas Geometry and topology Conference. For additional information about past andfuture Texas Geometry and topology Conferences, you may contact Jon Pitts. http://www.math.tamu.edu/research/workshops/TGTC/

Texas Geometry and Topology Conference Serving the Mathematical Community Since 1989 Mission Statement The Texas Geometry and Topology Conference is dedicated to the enhancement of both the educational and the research atmosphere of the community of geometers and topologists in Texas and surrounding states. The Conference has three specific goals: The Conference is committed to bring researchers of national and international stature to the region to discuss their research and to interact with mathematicians from Texas and surrounding states. The Conference makes it possible for the community of geometers and topologists from Texas and surrounding states (a huge geographic region) to meet and share mathematics on a regular basis, which both stimulates individual research and generates productive cooperative efforts between schools. The Conference is dedicated to the development of graduate students and young faculty in geometry and topology. Upcoming and Recent Conferences 31th Meeting at Texas Christian University , February 27-29, 2004. ( Conference report 30th Meeting at Rice University , October 31-November 2, 2003. (

126. XIIth OPORTO MEETING On GEOMETRY, TOPOLOGY & PHYSICS (July 2003) Translate this page http://www.math.ist.utl.pt/~jmourao/om/omxii/

127. Oporto Meetings On Geometry, Topology And Physics Formerly Meetings on Knot Theory and Physics held annually in Oporto, Portugal to bring together mathematicians and physicists interested in the interrelation between geometry, topology and physics. http://www.math.ist.utl.pt/~jmourao/om/

Oporto Meetings on Geometry, Topology and Physics Oporto Meetings on Geometry, Topology and Physics (formerly known as the Oporto Meetings on Knot Theory and Physics) take place in Oporto, Portugal, every year. The aim of the Oporto meetings is to bring together mathematicians and physicists interested in the inter-relation between geometry, topology and physics and to provide them with a pleasant and informal environment for scientific interchange. Next Meeting (July 16-19, 2004) XIIth Meeting (July 17-20, 2003) ... Main Page of TQFT Club Free Counter from Counterart

128. SUMTOPO • Summer Conference Series In Topology & Applications An annual event bringing together an international audience of researchers in general topology and http://sumtopo.home.att.net/

129. SISTAG 2001 Singapore International Symposium on topology and Geometry, 26 July 2001. http://ww1.math.nus.edu.sg/SWworkshop/sistag.htm

Site last updated: 28 May 2002 QUICK LINKS: About the Symposium Principal Speakers Contributed Talks Commemorative Volume ... Second Announcement ABOUT THE SYMPOSIUM: Organized by the Department of Mathematics at the National University of Singapore , and under the auspices of S.W.I.M.S. or the Singapore-Warwick Initiative in Mathematical Sciences, SISTAG took place from 2 - 6 July 2001 in the National University of Singapore. S.W.I.M.S. was a four-year project between the National University of Singapore and Warwick University that commenced since late 2000. It served to encourage greater research interaction between both universities in mutually strong areas of topology and geometry, statistics, dynamical systems and financial mathematics. This symposium was aimed at surveying current research in a broad range of geometry and topology, including differential and algebraic geometry, geometric and algebraic topology and geometric analysis. PRINCIPAL SPEAKERS: Alejandro ADEM University of Wisconsin-Madison "Periodic complexes and group actions"

130. Geometry And Topology http://www.emis.ams.org/journals/UW/gt/

131. Cartoons From the topology Atlas. http://at.yorku.ca/i/a/a/b/93.htm

Topology Atlas Document # iaab-93 Cartoons Francisco Craveiro Received: March 8, 2000 Topology Atlas

132. Geometry And Topology http://www.emis.ams.org/journals/GT/

133. What Is Topology? An introductory essay by Neil Strickland, University of Sheffield. http://www.shef.ac.uk/~pm1nps/Wurble.html

What is topology? Topologists are mathematicians who study qualitative questions about geometrical structures. We do not ask: how big is it? but rather: does it have any holes in it? is it all connected together, or can it be separated into parts? A commonly cited example is the London Underground map. This will not reliably tell you how far it is from Kings Cross to Picadilly, or even the compass direction from one to the other; but it will tell you how the lines connect up between them. In other words, it gives topological rather than geometric information. Again, consider a doughnut and a teacup, both made of BluTack. We can take one of these and transform it into the other by stretching and squeezing, without tearing the BluTack or sticking together bits which were previously separate. It follows that there is no topological difference between the two objects. Consider the problem of building a fusion reactor which confines a plasma by a magnetic field. Imagine a closed surface surrounding the plasma. At each point on the surface, the component of the magnetic field parallel to the surface must be nonzero, or the plasma will leak out. We are thus led to the following question: given a surface S, is it possible for there to be a field of vectors tangent at each point of S which is nowhere zero? It turns out that this depends solely on the topological nature of S. If S is the surface of a sphere, it is not possible. Magnetic confinement of a ball of plasma just does not work. The only type of surface for which this approach is possible is the inner tube shape, which is of course the solution universally used for such reactors. (I do not claim that engineers needed topologists to point this out; on the contrary, this is a nice example precisely because many people can see for themselves that the claim is true.) Another amusing consequence of the same argument is that at any given time, some point on the Earth's surface is windless.

134. TopPred 2 TopPred 2. topology prediction of membrane proteins. With topology we meanthe orientation and location of transmembrane helixes. Running TopPred 2. http://www.sbc.su.se/~erikw/toppred2/

Pscan DAS TopPred 2 Servers ... Molscript STOCKHOLM UNIVERSITY Theoretical Chemistry Protein Prediction Servers TopPred 2 Topology prediction of membrane proteins With topology we mean the orientation and location of transmembrane helixes. Running TopPred 2 Unfortunately the toppres server has been closed. There is a new version available at http://bioweb.pasteur.fr/seqanal/interfaces/toppred.html Documentation The only currently available documentation is the original publication. We appologize for this, and hope to be able to provide a more complete documentation online in future versions of this service. If you use this service, please cite the following reference: "Membrane Protein Structure Prediction, Hydrophobicity Analysis and the Positive-inside Rule", Gunnar von Heijne, J. Mol. Biol. (1992) 225, 487-494 A comparison with other methods can be found in: "Prediction of transmembrane alpha-helices in prokaryotic membrane proteins: the dense alignment surface method", Miklos Cserzo, Erik Wallin, Istvan Simon, Gunnar von Heijne, and Arne Elofsson, to appear in Protein Engineering, vol. 10, no. 6, (1997)

135. Www.reference.com/usetop/ topology Of Protein StructuresProvides articles and FAQ explaining cartoon depictions, atlas of tertiary arrangements of polypeptides http://www.reference.com/usetop/

136. Cartan's Corner : Elie Cartan A brief biography of Cartan and exposition of his work in applied topology. http://www22.pair.com/csdc/car/carfre2.htm

Elie Cartan Elie Cartan From 1899 to 1945, Elie Cartan , a son of a blacksmith, developed a set of extraordinary mathematical ideas that have yet to be fully exploited in the physical and technical sciences. This WWW site is dedicated to certain applications of Cartan's methods to problems of dissipative, radiative, irreversible systems. Although emphasis herein has been placed on hydrodynamic, thermodynamic, and electromagnetic applications, Cartan's techniques can be used on micro and cosmological scales as well. Cartan was the inventor of Spinors , spaces with Torsion , a champion of Projective Geometries , and the developer of a system of calculus called Exterior Differential Forms. This remarkable calculus goes beyond the geometrical limitations of Tensor Analysis with its restrictions to diffeomorphisms, for Cartan's exterior calculus has Topological content in both its irreducible (Pfaff dimension) representations, and in its harmonic components (deRham period integrals). Moreover, exterior differential forms are well behaved under functional substitution and the pullbacks with respect to maps that are not even homeomorphic. Therefore differential forms can be used to study topological evolution, where standard tensor methods on contravariant objects fail. The philosophy to be developed herein is that most visible physical measurements are recognitions of Topological Defects and that irreversibility and biological aging are expressions of Topological Evolution For some more history

137. Ideas, Concepts And Definitions topology. topology is the mathematical study of surfaces. Sometimes Themathematical study of knots is a branch of topology. The http://www.c3.lanl.gov/mega-math/gloss/topo/topo.html

Topology Topology is the mathematical study of surfaces . Sometimes it is called ``rubber sheet geometry" because topologists consider geometric figures as though they were drawn on infinitely stretchable rubber sheets. In two dimensions, topologists imagine figures that can be stretched and pulled as though they were drawn on an infinitely thin, infinitely stretchable material that can be deformed in any way (not including tearing, perforating, or gluing). Some properties that are important in Euclidean geometry such as distance, measurement of angles, or straightness are don't hold. Other properties, such as whether lines intersect or whether figures are closed (like the letter "O" ) or open (like the letter "U") remain important. In two dimensions, a triangle, a square, and a circle are all topologiclaly equivalent. So are the upper case letters "T", "F" and "E". In 3 dimensions, the surface of a cube, a pyramid, and a sphere are topologically equivalent. A stretchable "skin" that covers any one of them can be restretched to cover any of the others. The surface of a donut and a coffee cup are topologically equivalent each is a three-dimensional object with a hole in it. This is an unusual (but valid) way to think about the world.

138. Spring 2002 Meeting Of The PNGS A joint meeting of the Pacific Northwest Geometry Seminar and the Cascade topology Seminar. University of Washington, Seattle, USA; 1112 May 2002. http://www.math.washington.edu/~lee/PNGS/2002-spring/

Pacific Northwest Geometry Seminar Cascade Topology Seminar 2002 Joint Spring Meeting University of Washington Seattle, WA Saturday and Sunday, May 11 and 12, 2002 Revised Schedule All talks will be in Thomson 101 Saturday, May 11 Coffee and snacks ( Thomson 119 Deane Yang Polytechnic University Geometry, analysis, and information theory ... slides Problem session Lunch Laura Scull UBC Rational Equivariant Homotopy Ralph Cohen ... Stanford Duality phenomena in loop spaces and conformal field theory Problem session Conference dinner at Sea Garden Restaurant* Sunday, May 12 Coffee and snacks ( Thomson 119 John Baez UC Riverside Categorified gauge theory ... A study of homogeneous Einstein metrics Problem session This conference is supported by grants from the National Science Foundation and the Pacific Institute for the Mathematical Sciences Conference dinner Saturday evening: Sea Garden Restaurant 509 7th Avenue S. Seattle, WA 98104-2905 Participants wishing to attend the dinner must sign up at the conference on Saturday morning. For more information: UW UW Mathematics Department UW Campus maps Hotels ... Travel grants for participants The University of Washington is committed to providing access, equal opportunity and reasonable accommodation in its services, programs, activities, education and employment for individuals with disabilities. To request disability accommodation contact the

139. NetView And OpenView Tools - Tavve Software Solutions for fault management, root cause analysis, event correlation, network topology mapbuilding and customization, performance reporting, troubleshooting, and distributed network management. http://www.tavve.com

Site Map Contact Us Company News/Events Site Map Contact Us Company News/Events ... Tavve Offers Solution for Network Security with its Release of ePROBE 2.0

140. JTS Topology Suite http://www.vividsolutions.com/jts/jtshome.htm

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