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appropriate security clearance, could join the system from anywhere and its user could participate in group and individual work as desired. The advantages of the Praxis Java-based framework are many, but the main ones are those attributable to the nature of the Java language itself, including a profoundly object-oriented design. These advantages are: simplicity, easy (i.e. piece by piece) expansion/modification, ease of maintenance, and relatively low development costs. Cross platform connectivity, centralized automatic upgrades, no need for any special client software, and that it supports multi-user, multi-level, multi-role distributed cooperative workgroups are further advantages of the framework. The concept behind the Praxis framework is distributed communities including communities of communities, their needs for information retrieval and processing, and especially the communal workgroup environment, including different levels of security clearance and different roles. Different roles allow different individuals with different requirements to see and deal with different subsets of information in different ways as defined by the role type attached to their authorization. Since the entire framework is platform independent and completely modular, new components, including new sources, are simply added as plug-ins. Clients do not normally require any special software, and server software may be added to the system from a central location during ordinary operation. The existing framework has been designed with an emphasis on distributed servers and distributed working groups as a platform for complex multivariate simulations. The Simulation System The simulation system is built around certain devices and concepts: • Interest Groups - groups of people who are interested in a certain aspect of a simulation or knowledge base. • Roles - individuals within an interest group may interact with others in a specific way, e.g. an instructor has different interaction requirements from a trainee. • Scenarios - a simulator ought to be able to emulate certain incidents or accidents - we term each emulation sequence a scenario • Scripts - a script is a certain kind of code which controls the simulation engine in such a way as to produce a scenario. Scripts are written in a language which is both conditional and massively parallel. • Communications - a communication system is provided so that individual trainees can communicate with other trainees or with virtual people as a part of the training exercise. • Virtual People - are simulated people who take certain roles when there are no real people to fill them. Virtual People are controlled by Scripts, but can be replaced on the fly by real people. An example: In typical operation a number of people may be involved in a simulation exercise with many dynamically interacting components. For example, consider the simulation of several ships in a Navy exercise. In the simplest form, a number of trainees would assume different shipboard roles as they interact with each other and with the simulation engine. Each trainee would be served information, including the correct visual information, according to his or her role. The steersman would get a compass and a view out the wheelhouse window (using VRML 3 ), for example, while another member of the bridge team might get a radar screen and a view through the main windows. Engine room personnel would get engine operating information and visuals, while sonar personnel would get sonar screens, etc. Certain aspects of the simulation are controlled by a script. For example, mechanical faults may occur in the ship, other (enemy) ships or submarines may arrive on the scene (each with its own crew of real or virtual people). While scripts control certain aspects of the simulation, they also control “observations/evaluations” the simulation system makes of the trainees moves – how they exercise their roles, and so forth. Logs of the activities of the trainees are also kept. 3 Virtual Reality Markup Language – allowing user-controlled 3D virtual worlds.
Other ships may also appear on the screen, each powered by its own simulation engine and by its own crew (interest group) with its own collection of roles. Scripts may also interfere with the operation of these ships and watch the behavior of their crews. Because of the nature of the Java framework, other simulation engines will automatically join the simulation if they are present. The whole exercise need not be set up in advance, but can grow and adapt on the fly. These new simulation engines might be served from the same server, or served from different servers so that the total learning experience may be distributed dynamically among many computers as computing loads require. Other Instructional Uses The Java Framework is useful for many other purposes other than simulations. For example, a medical informatics version is under development. The following diagram illustrates its use in a medical informatics/conferencing mode. Two doctors are reviewing the same x-ray. Small video views of the participants are in the top right hand corner. Information from a variety of database sources is displayed on each screen. ROLE 1 ROLE 2 Name: John Doe Name: John Doe Status: Possible wrist fracture Medical# 45278-2323 Age: 37 Height: 6'1" Weight: 192lbs Status: Married Occupation: Professional IndyCar Driver Address: 7372 Main Street, Sometown, Canada V9S 1G2 HESSE ANY ORB TCP/IP Conference Group Conference Data Video Transfer: OK Baud Rate: 28800 Chat Mode: ON ________________ >>Looks busted heh? >>Yup. Custom JDBC Converter (Database/Java Bridge) X-ray Name: John Doe Name: John Doe Status: Possible wrist fracture Medical# 45278-2323 Age: 37 Height: 6'1" Weight: 192lbs Status: Married Occupation: Professional IndyCar Driver Address: 7372 Main Street, Sometown, Canada V9S 1G2 Custom JDBC Converter (Database/Java Bridge) Patient Data Video Transfer: OK Baud Rate: 28800 Chat Mode: ON ________________ >>Looks busted heh? >>Yup. Index Interface Index DB
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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
Page 343 and 344: Abstract: Aspects of Large World Wi
Page 345 and 346: Structuring data The unstructured a
Page 347 and 348: say on a LAN with a hypermedia serv
Page 349 and 350: Halasz, 1988 Halasz, F. (1988). Ref
Page 351 and 352: One of the CNES' goals is to make s
Page 353 and 354: Archived Files Start Time 1 End Tim
Page 355 and 356: HELP-EXCHANGE: An Arbitrated System
Page 357 and 358: Since the Help-Exchange system is e
Page 359 and 360: system avoids spamming since the qu
Page 361 and 362: From a Set of Technical Documents t
Page 363 and 364: “The machine that would perform t
Page 365 and 366: In the case of the link with commen
Page 367 and 368: [Glushko 89] Glushko, R. (1989). De
Page 369 and 370: • SWOOP [Hunter et al. 95] provid
Page 371 and 372: also planned for implementing this
Page 373 and 374: storage structures already establis
Page 375 and 376: Every S-collection (instance) has a
Page 377 and 378: do not map S-collections onto a glo
Page 379 and 380: The operator JOIN is applied to a c
Page 381 and 382: Internet India Suzanne McMahon Univ
Page 383 and 384: published in Bombay, includes shopp
Page 385 and 386: INDIA-E@INDNET.BGSU.EDU Economic Fo
Page 387 and 388: Instructional Materials The first c
Page 389 and 390: Reminder Robot For the Q&A section
Page 391 and 392: [Wusage 1994] Cold Spring Harbor La
Page 393: succeed, is also social in origin,
Page 397 and 398: An Intelligent Tutoring System on t
Page 399 and 400: Figure 1. Viewer Control Mechanism
Page 401 and 402: input and clickable map as the ways
Page 403 and 404: Designing Digital Libraries for Pos
Page 405 and 406: Layer HOSS allows an open set of st
Page 407 and 408: contradictory to produce a well-def
Page 409 and 410: [Chartier 1994] Chartier, R. (1994)
Page 411 and 412: much of the value on the Net “wil
Page 413 and 414: did nothing but slow down processin
Page 415 and 416: Bundling has been studied extensive
Page 417 and 418: The software industry relies on dif
Page 419 and 420: that is not accepted by society exi
Page 421 and 422: [Richardson & Radner 1996] Richards
Page 423 and 424: European Economic Area agreement. S
Page 425 and 426: Figure 2: Components of the learnin
Page 427 and 428: 5. Concluding Remarks Figure 4: The
Page 429 and 430: A Distance Education How-To Manual:
Page 431 and 432: usually required. This can take pla
Page 433 and 434: piece, or of the whole piece. A CD
Page 435 and 436: Indexes, Keys: these tables define
Page 437 and 438: following, we discuss basic types o
Page 439 and 440: long: in the music database, the co
Page 441 and 442: The MARBLE 1 Project: A Collaborati
Page 443 and 444: 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
Page 557 and 558:
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,
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The Presentational use of the inter
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named-thing2(thing-type (parameters
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Integrating the use of the Web into
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linking within the web page is also
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Providing Medical Education Resourc
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logons by PPP/home access, Informat
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indeed create considerable turbulen
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Introduction Homeland: An Integrate
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[Frega and Volpentesta 94] Frega N.
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Summary: Our culture often thinks o
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Implementing Engineering Education
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Reorganised by the Web: Bringing th
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content providers--collaborative te
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Table 1: Sample items from the BEM
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Health Care Information on the Web:
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Abstract Shame and War Revisited Ad
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left to do? Style sheets don't let
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In this case, the Los Alamos Nation
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Differing Cultures: Bringing Minds
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Web of Thought: Ways to Make the Wo
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On Teaching and Collaborative Devel
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I.- History Distance Education on D
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But there is much more to this pict
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in Treemaps. In contrast, the Docuv
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Figure 2: Webview The Webview is us
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Figure 3: Intradocument View showin
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Using a WWW Server to Access and Ma
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W3Client Figure 1 : The Co-Learn WW
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Avoiding Vendor Lock-in: An Open Ap
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Web Courses for Northern B.C.: Virt
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Harvesting the Internet: Creating a
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School Participation in the Co-Deve
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a basic framework for adopting tech
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COMMUNITY WEB PROJECTS TO SUPPORT H
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Overview: Automatically Generated W
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Introduction Computer Aided Informa
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[Bloomfield 1994] Bloomfield, H. (1
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A Generic Learning Platform: From t
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etween Moscow and Western Europe, S
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Creating A Presence On The World Wi
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References [Hill 1993] Hill, Terry
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many of the students likewise had f
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DeRose, Steven and Durand, David, M
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{1} http://www.gfz-potsdam.de/drz/g
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significantly different. Analysis f
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3. The Web Based Solution Most CBT
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A Virtual Campus on the World Wide
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A unified NBCC-wide (and hopefully
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Start Your Search Engines! Authenti
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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
Page 817 and 818:
The applet is organised around two
Page 819 and 820:
esult, the new search queries not o
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Introduction Distant Education Mate
Page 823 and 824:
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
Page 837 and 838:
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
Page 845 and 846:
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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