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$(LMS\) an der Universität Freiburg - Lehrstuhl Algorithmen ...$

Figure 3: Intradocument View showing both Mural and TileBar; Link Preview The Mural is placed to the far left of the scroll bar of the document display window. It represents a miniaturized view of the entire document. The Mural panel represents the full document. The portion of the panel co-extensive with the scroll bar thumb represents the portion of the document visible in the display window. Each of the color-coded rectangles in the Mural indicates the location and type of a link in the document. Using the Mural, the user can immediately see all the links in the document and move to any part of the document that he/she finds interesting. The Mural may also depict other structural features of a document such as structural copymarks or versioning information. TileBar The panel between the Mural and the scroll bar in Figure 3 is a TileBar. It uses the same conventions as the Mural in that it represents the entire document and the portion co-extensive with the scroll bar thumb represents the visible portion of the document. The TileBar is sectioned based on a semantic analysis of the document. The user then selects one, two or three groups of terms and the density of occurrences in each section is shown -white indicating the absence of the term and black indicating a high occurrence. The figure shows that Term set 1 occurs most frequently in the first third of the document while the terms in the third set start to be found frequently in the section of the document currently being viewed. Preview Figure 4: Link Preview Many research projects have used some kind of lens or link preview to provide additional information about a link before it is traversed. One of our systems, [Olsen et al. 1993] provided a lens with user-selectable contents. Preview represents the relationship between the current document and a linked document by showing metadata about the linked document within the document currently being viewed. The Preview has two types of views. One is an explicit view which displays only abstract ideas about the linked document such as title, author, or status. This view is shown in Figure 3 as the colored buttons indicating the location of hypertext links. From this view the reader can know who the author of the comment is (label information) as well as the comment type
(color coding as in the Webview). The advantage of the explicit view is that it shows the information about all the visible links at one time. The second view is a popup lens which shows more specific information such as date of creation, length of the document, abstract and so on (Figure 4). The popup lens view shows a more detailed preview. Multiple popup lenses can be viewed simultaneously but their larger size places limits on how many can be used effectively. Conclusion Navigation through large document spaces, and abstract spaces in general, requires a number of specialized tools. Based on the assumption that a document space contains both objects and relations, we have developed a set of interrelated tools that are currently being tested and refined using the CASCADE testbed. Currently four tools -- Docuverse, Webview, Landmarks, and Preview -- are being used. It appears that each tool will play a role at different times in the navigation process. The tools have been linked such that appropriate actions in one tool invoke one of the other tools allowing the user to zoom in and out, gather detailed data as needed, and preview actions. As indicated above, this work is still in a formative stage of development. Plans for future work include finding the optimal spatial representation for the Docuverse, exploring the use of time lapse representations of the Docuverse, looking at perspective representations of 2D and 3D trees to depict more information in the Webview, exploring the limits of data overloading in the Webview for expert and novice users, using Mural to render implicit structure as well as explicit structure. References [Hearst 1995] Hearst, M.A. (1995). TileBars: Visualization of term distribution information in full text information access. Human Factors in Computing Systems, CHI '95 Conference Proceedings, Denver, CO, May 7-11, 1995, 59-66. [Morse etl. 1996] Morse, E.L., Willms, S., Pollak, W., Meyers, C. and Spring, M.B. (1996). The Impact of Collaborative Authoring Software on the Standardization Process, SIS Research Reports, LIS061/IS96002, Department of Information Science and Telecommunications, University of Pittsburgh. [Olsen et al. 1993] Olsen, K.A., Korfhage, R.R., Sochats, K.M., Spring, M.B., and Williams, J.G. (1993). Visualization of a Document Collection with Implicit and Explicit Links: The VIBE System. Scandinavian Journal of Information Systems, 5:79-95. [Shneiderman 1991] Shneiderman, B. (1991). Treemaps: a space-filling approach to the visualization of hierarchical information structures, In Proceedings of the 2nd International IEEE Visualization Conference, San Diego, October 1991, 284-291. [Spring & Jennings 1993] Spring, M.B. and Jennings, M.C. (1993). Virtual Reality and Abstract Data: Virtualizing Information. Virtual Reality World, Spring 1993, 1(1):c-m.
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Proceedings of WebNet 96— WebNet
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FULL PAPERS BRIAN BEVIRT Designing
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THIERRY LEVOIR & REMI BASTIDE SADS:
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MASAYASU AOTANI Distance education
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IAIN LANGDON Education for Changing
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PANELS M J MCALISTER, P COMER & MIS
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Designing Hypertext Navigation Tool
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Organize the Contents of Your Site
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multiple hierarchy charts have to b
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Developing Structured WWW-Sites wit
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Links refer to Templates. From the
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typing tool, which on the one hand
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and implement commercial Web-sites.
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constraints. It is important to rem
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A three-rowed "desktop" was used as
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All assignments were tracked, and s
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Figure 5: Student Information Toolb
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positive values to the course: 1. F
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2. Problem Areas We have identified
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in our system is quite large, and p
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map information for display into th
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- whether these new applications co
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4.3. The Production Phase The produ
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Requests 2500000 2000000 1500000 10
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information systems. Since late 199
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QuestWriter, which will be availabl
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Figure 1: Typical Study Approaches
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Figure 2: Feedback Loop for Questio
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educational Web page design. We hav
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Identifying and Meeting Needs of In
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Two new forms-driven templates, one
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What We Learned About Coaching Web
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Introduction The WWW as a Primary S
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Processing the Order Once users hav
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documentation, report a problem to
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VRML and the Web: A Basis for Multi
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Plate 2: Three users represented by
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Figure 2: Interfae components to ex
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Avatar Distribution Figure 3: Avata
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Introduction Tracking WWW Users: Ex
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etween subsequent requests, and an
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server not to cache that object. Ho
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[Benford et al. 1996] Benford, S.D.
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Published on the Web from the WebNe
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current state of knowledge represen
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Figure 1: Textook and Glossary wind
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Part of this work is supported by a
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Database 2. Review of Related Work
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Display Password Screen Check User
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Recently, Java has changed the way
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To meet our requirements, we have o
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Using the WebSM the creation of a q
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store its result in a variable, usi
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Table of Contents Executive Summary
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Chapter One: The Web Marketplace Gr
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4) Advertising Subsidy growing dram
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effectiveness of the ad with any on
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3) Server Performance The Web commu
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Chapter Three: Andromedia’s Aria
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3) Distributed Design Although Obje
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Aria.monitor is comprehensive with
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The Aria.recorder is also capable o
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is being used to create real-time r
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The Reporter user interface provide
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Aria.reporter takes advantage of th
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Introduction Automating Hypermedia
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Figure 3: 2: Add Course Graphic Cre
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Longevity of the HTML Course Creato
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Methodological Issues in Studying a
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4. Complexity of User Interaction:
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automatically, in a reliable and pe
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web users (i.e., scrolling list of
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the NSF EXPRES project. In [Galeghe
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Astronomy and Space Science Relevan
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surface of Pluto - assembled throug
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The Web as Process Tool and Product
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collaboratively produced report abo
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In the AIT course, key satisfaction
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Explorations: the Cornell Theory Ce
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version of Netscape 2.0 (Netscape w
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from video tape) and compromised on
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Designing a Course on the WEB : the
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charge of a training institute, we
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Another way of supporting "point to
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References [Derycke and D’Halluin
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like SGMLS or SP [Clark 95]. The WW
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MRTSpace is based on MRT, a Minimal
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2.3 Geometric and visual ‘continu
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IP Multicast messages do not work o
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came into common use. A number of e
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probably to human culture as a whol
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3D Visualization of WWW Semantic Co
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2.1 Extracting and Organizing WWW S
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mantic space comes from exploring r
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Introduction Interactive Justice Th
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presented by both public prosecutor
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A different communication mode allo
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Convergence to the Information High
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over 9 million at the beginning of
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unreliable electronic components co
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in an integrated model which has th
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Crane, D. (1972). Invisible College
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discourse does not mean that it is
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Figure 2 Communities within the lay
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The major services classified are:-
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Spears, R. and Lea, M. (1994). Pana
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presents relevant items to the user
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ProFusion's main process creates mu
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Managing Interdisciplinary Project
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influencing the study. To ensure th
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ANALYSIS The introduction of new co
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to be combined; this integration ac
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On receiving the information that a
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4.1.4 SPS-SCS delivery system This
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Aster Servers - How to make Aster m
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Another approach we have tested as
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information available on the web. W
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Project Based Learning - Global Vil
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http://www.ncsa.uiuc.edu/SDG/Softwa
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Web. It is tailored to the needs of
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Views of the Solar System - http://
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Gatherers and Brokers. The Gatherer
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(Uniform Resource Locators) are pre
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References Figure 6: Document Displ
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The RealAudio (http://www.realaudio
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For educators, this combination of
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The practical components of this pr
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typologize communication and media
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egistration pattern (in the reverse
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the Internet, in terms of informati
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Fig. 10: 3-dimensional pattern matr
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structure of the courses adheres to
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applications manage chat sessions,
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6. Evaluation Figure 4: Example
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Introduction Windows to the Univers
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Figure 1: The main navigation panel
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Our Planet Interior & Surface Atmos
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I. Introduction What is a browser?
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(1) [Baggett, Ehrenfeucht, & Guzdia
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Node display. In addition to enforc
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On-demand Multi-lingual Font Servic
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One of the advantages by using Java
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The directory can be an alias defin
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Real Audiences—Worldwide: A Case
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outstandingly successful authors re
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usually jumps over the keyboard --
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Introduction Web Conceptual Space R
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conceptual knowledge processing, kn
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and the 'Top' view for all applicat
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An Information Broker for Adaptive
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the worst case, we can make a rough
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These simple parameters significant
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[Weider 96] Weider, C. , Fullton, J
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experiments, listen to sound, run l
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The administration and management s
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Educational packages: the current i
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Embedded Interactive Concept Maps i
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eading and understanding informal c
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Every Smart Ideas document has a de
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and used an index into the HTML doc
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Introduction Building Internet-Base
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comments from others or newly assig
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Figure 3: Author profile Conclusion
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The major features are: Figure 1 Me
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Figure 3 FrameMaker requirements do
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5 Conclusions This article has pres
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On-the-Fly Web Pages Minus the HTML
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Scannell, Ted (1996). Steve Jobs In
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originator. Thus, the collaborative
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preferences, circumstances and task
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development concerns the previously
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Abstract: Aspects of Large World Wi
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Structuring data The unstructured a
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say on a LAN with a hypermedia serv
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Halasz, 1988 Halasz, F. (1988). Ref
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One of the CNES' goals is to make s
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Archived Files Start Time 1 End Tim
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HELP-EXCHANGE: An Arbitrated System
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Since the Help-Exchange system is e
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system avoids spamming since the qu
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From a Set of Technical Documents t
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“The machine that would perform t
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In the case of the link with commen
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[Glushko 89] Glushko, R. (1989). De
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• SWOOP [Hunter et al. 95] provid
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also planned for implementing this
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storage structures already establis
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Every S-collection (instance) has a
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do not map S-collections onto a glo
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The operator JOIN is applied to a c
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Internet India Suzanne McMahon Univ
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published in Bombay, includes shopp
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INDIA-E@INDNET.BGSU.EDU Economic Fo
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Instructional Materials The first c
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Reminder Robot For the Q&A section
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[Wusage 1994] Cold Spring Harbor La
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succeed, is also social in origin,
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Other ships may also appear on the
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An Intelligent Tutoring System on t
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Figure 1. Viewer Control Mechanism
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input and clickable map as the ways
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Designing Digital Libraries for Pos
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Layer HOSS allows an open set of st
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contradictory to produce a well-def
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[Chartier 1994] Chartier, R. (1994)
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much of the value on the Net “wil
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did nothing but slow down processin
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Bundling has been studied extensive
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The software industry relies on dif
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that is not accepted by society exi
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[Richardson & Radner 1996] Richards
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European Economic Area agreement. S
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Figure 2: Components of the learnin
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5. Concluding Remarks Figure 4: The
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A Distance Education How-To Manual:
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usually required. This can take pla
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piece, or of the whole piece. A CD
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Indexes, Keys: these tables define
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following, we discuss basic types o
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long: in the music database, the co
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The MARBLE 1 Project: A Collaborati
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available, as described above, help
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Feedback and Analysis Fig 2: Extrac
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Open Net and the Australian On-Line
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speeds, download times, changing br
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our audience, fall into one of the
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server change. When we had our own
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Structuring and classification of d
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would not have the rights to change
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5 Current Electronic Publications W
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WebGrid: Knowledge Elicitation and
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annotation form shown in Figure 2 t
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Figure 4 WebGrid form for rating el
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Figure 7 Main status screen of WebG
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As a final element, the realtor has
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WebGrid provides many additional fa
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Media, Multimedia and Meaningful La
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One question which arises in a disc
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about the medium. In studies in whi
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Schwerin advocates mediation as “
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The wider implications of this perc
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Internet, that quality may be seen
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The most frequently discussed probl
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3.2 Developer viewpoint A MicroWeb
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We anticipate that the complete Mic
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Database for employment information
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Figure 1 System Structure Figure 2
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Figure 5(b) Results of Searching
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ClassNet is a CGI-Script running un
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Current Uses Dr. Doug Yarger at Iow
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Introduction Modelling Alter Egos i
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Let us further suppose that the cyb
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• NEC to indicate that the action
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for example impossible to define an
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[vdRiet 95] R.P. van de Riet, A. Ju
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or "anchors." The anchors are stori
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Figure 1: Excerpt from SMART WWWeb
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there is less dissolved oxygen in t
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CS20 will provide students with new
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EPIC : Building a Structured Learni
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expects. The EPIC exercises are emb
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interactive courses around Scotland
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This paper begins by briefly survey
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must supply such information, the s
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Building the collection The lowest
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size is bounded by the size of a st
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the choice should be. It may be tha
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Introduction Supporting Provision a
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A visual resource base comprises a
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• Web browser: It performs the se
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POSTER / DEMONSTRATION
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integration of presentations create
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Science Technology Entry Program: I
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ID Comm: Building a Virtual Communi
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Preservice Teacher Education and th
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Un Meurtre a Cinet (Un homicidio en
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The Human Brain: A Frames-based Ima
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Collaborative Learning/Teaching on
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SHORT PAPERS
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system look for email from the mail
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Converting a Large Introductory Cou
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Bringing Instructional Design Princ
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Watermarking for the HyperWave Hype
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Impact of the Introduction of Web-B
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Owen, J.M. (1993). Program Evaluati
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(d) Low cost to students (e) Easier
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Introduction Robots And The Web: An
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Figure 2. BargainBot Search Results
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Conclusions and Future Work Figure
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Introduction Active Messaging in Ja
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Acknowledgments The authors would l
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The effective development of web-ba
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telecollaboration. This work aims t
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Introduction Internet for Teachers:
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Creating Educational Webmasters: Cy
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Acknowledgments I would like to tha
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The College of Human Ecology, which
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The screen dumps below show a large
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can also open and close levels of t
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Venice and Vienna, iconographic col
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Introduction: Cyberschool - Singapo
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1. Overview US Information Superhig
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Collaborative Design: A Cognitive A
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A Web Based Decision Support System
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addition to participating in teache
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communication between students, bet
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• Exploring Libraries introduces
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Design for Web-Based Learning Phili
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The effin factor concerns the appea
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Introduction The Web is not a Distr
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WEB-EDD: Electronic Document Delive
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Walker, G. L. & Thoma, G. R. (1995)
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3. Evaluation of Link Annotation fo
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Based on the needs addressed above,
Page 629 and 630: The Presentational use of the inter
Page 631 and 632: named-thing2(thing-type (parameters
Page 633 and 634: Integrating the use of the Web into
Page 635 and 636: linking within the web page is also
Page 637 and 638: Providing Medical Education Resourc
Page 639 and 640: logons by PPP/home access, Informat
Page 641 and 642: indeed create considerable turbulen
Page 643 and 644: Introduction Homeland: An Integrate
Page 645 and 646: [Frega and Volpentesta 94] Frega N.
Page 647 and 648: Summary: Our culture often thinks o
Page 649 and 650: Implementing Engineering Education
Page 651 and 652: Reorganised by the Web: Bringing th
Page 653 and 654: content providers--collaborative te
Page 655 and 656: Table 1: Sample items from the BEM
Page 657 and 658: Health Care Information on the Web:
Page 659 and 660: Abstract Shame and War Revisited Ad
Page 661 and 662: left to do? Style sheets don't let
Page 663 and 664: In this case, the Los Alamos Nation
Page 665 and 666: Differing Cultures: Bringing Minds
Page 667 and 668: Web of Thought: Ways to Make the Wo
Page 669 and 670: On Teaching and Collaborative Devel
Page 671 and 672: I.- History Distance Education on D
Page 673: But there is much more to this pict
Page 676 and 677: in Treemaps. In contrast, the Docuv
Page 678 and 679: Figure 2: Webview The Webview is us
Page 682 and 683: Using a WWW Server to Access and Ma
Page 684 and 685: W3Client Figure 1 : The Co-Learn WW
Page 686 and 687: Avoiding Vendor Lock-in: An Open Ap
Page 688 and 689: Web Courses for Northern B.C.: Virt
Page 690 and 691: Harvesting the Internet: Creating a
Page 692 and 693: School Participation in the Co-Deve
Page 694 and 695: a basic framework for adopting tech
Page 696 and 697: COMMUNITY WEB PROJECTS TO SUPPORT H
Page 698 and 699: Overview: Automatically Generated W
Page 700 and 701: Introduction Computer Aided Informa
Page 702 and 703: [Bloomfield 1994] Bloomfield, H. (1
Page 704 and 705: A Generic Learning Platform: From t
Page 706 and 707: etween Moscow and Western Europe, S
Page 708 and 709: Creating A Presence On The World Wi
Page 710 and 711: References [Hill 1993] Hill, Terry
Page 712 and 713: many of the students likewise had f
Page 714: DeRose, Steven and Durand, David, M
Page 717 and 718: {1} http://www.gfz-potsdam.de/drz/g
Page 719 and 720: significantly different. Analysis f
Page 721 and 722: 3. The Web Based Solution Most CBT
Page 723 and 724: A Virtual Campus on the World Wide
Page 725 and 726: A unified NBCC-wide (and hopefully
Page 727 and 728: Start Your Search Engines! Authenti
Page 729 and 730: Observations on Web-Based Course De
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espond to at least four other discu
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examples of the many good discussio
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instructor intervention (to prevent
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Using the World Wide Web To Creativ
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In summary, the goals of the PTK ar
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like SGMLS or SP [Clark 95]. The WW
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All relevant information and links
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Introducation A Virtual Classroom i
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Introduction Put Your Experience on
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Domeshek, E.A. & Kolodner, J.L. 199
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• provide IP address • provide
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Incorporating World Wide Web techno
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1 Introduction Non-Invasive Improve
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The first author acknowledges CNPq
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order to make the students feel tha
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World Band: K-12 Music Education on
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PITS (Populated Information Terrain
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The big central landmark VRML Some
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SEEWeb - An Internet Solution Steve
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Archive.edu: A Storehouse of Classr
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[O’Haver 1995] O’Haver, M. (199
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Module Three The third module explo
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The development of a new journal ne
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Implementation The tool is a Web-ba
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Providing Real Time Instruction on
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first was a single free text field
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the project as contributors of stud
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knowledge-acquisition have to be ac
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instead of contributing a lengthy r
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1. Introduction WWW3D: A 3D Multi-U
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6. Summary In this paper we have de
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collaborative programs. At the same
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and continued challenges of the pas
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In order to cater for the this latt
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Some lectures have pre-lecture assi
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Some Issues. T. of Japanese Society
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MENTOR: Internet Search Advisor and
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acquisition to be followed.- Repres
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Web in order to supplement the main
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When installed at the user end, stu
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These and other lessons learned hav
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some other details about the enviro
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Interactive Teaching Material for t
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The applet is organised around two
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esult, the new search queries not o
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Introduction Distant Education Mate
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Information. The Internet resources
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1 Introduction The Virtual Universi
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on-line, an audio and/or video conn
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Finally, if you are preparing lesso
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The user accessing the database (at
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Figure 2: The HTML page of Esther,
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PANEL
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TUTORIALS
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Table of Contents 1 INTRODUCTION 1
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specifications like the Initial Gra
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Low end digital cameras do not at a
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To display images correctly the gam
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• PCD: Photo Compact Disc. Kodak.
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3.1 Database Types There are differ
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There are a lot of (hierarchical) k
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the user. The drawback of dynamic c
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types. These are used to restrict t
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-18-
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If you would like to modify the app
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4.4 Database versus Information Ret
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HARVEST [29,30] is a more complicat
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• Access speed: 10% with 9,6 Kbit
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17. Proceedings of the 3rd Internat
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50. Poynton CA. Frequently Asked Qu
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