Name
Abstract | ||
|---|---|---|
We have designed and developed an Interactive Remote Instruction (IRI) system to support university-level instruction in a networked environment. The IRI system creates a virtual classroom where all participants have the same experience independent of their spatial location (separated by up to order of 100 km). Participants interact with audio, video, and collaborative tool operation information through a multimedia workstation. In this paper we describe an IRI testbed consisting of Sun Sparcstations 5 running Solaris 2.4 implemented over a local area network. We discuss the performance trade-offs and the scalability of the IRI system by analyzing results obtained during the execution of a test suite on the IRI testbed. The test suite consists of operations such as running a tool on a single workstations, running the tool collaboratively on multiple workstation, and finally running the tool collaboratively along with the display of student and teacher video images and audio. The most important conclusion of this work is that, though some improvements are required, we are able to achieve an acceptable performance within the goals we had established for IRI-required functionalities using moderately price hardware based on current technologies (about \$7K per student workstation). Feasibility means that response time for user commands is no more than twice in the worst case (Mosaic running on a single workstation by itself versus Mosaic running collaboratively on the testbed with multiple video streams and audio added). The results we obtained from this experimentation are being used in the design of a dynamic resource management scheme which will regulate the demand on the IRI system resources to maximize user perception of the quality of the virtual classroom. We briefly describe these and other planned improvements to the IRI system as well. |
Year | DOI | Venue |
|---|---|---|
1995 | 10.1007/978-0-387-34949-7_14 | HPN |
Keywords | Field | DocType |
collaborative tool operation information,virtual classroom,iri system resource,single workstation,multimedia workstation,iri testbed,performance trade-offs,test suite,tool collaboratively,iri system,multiple workstation,distributed application | Resource management,Test suite,Computer science,Response time,Testbed,Workstation,Trade offs,Local area network,Multimedia,Scalability | Conference |
ISBN | Citations | PageRank |
0-412-73290-4 | 0 | 0.34 |
References | Authors | |
3 | 6 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Kurt Maly | 1 | 567 | 139.93 |
| C. Michael Overstreet | 2 | 204 | 40.94 |
| Hussein M. Abdel-Wahab | 3 | 97 | 20.10 |
| Ajay K. Gupta | 4 | 166 | 24.40 |
| Muthu Kumar | 5 | 124 | 22.91 |
| Rahul Srivastava | 6 | 0 | 0.34 |