NDLI: Extending Linden Scripting Language on OpenSim

Content Provider	IEEE Xplore Digital Library
Author	Bo Sun Xiaohong Zhang Hao Wu
Copyright Year	2012
Abstract	OpenSim is a 3D virtual reality platform and now has been widely used in many fields. Its powerful scripting technology is helpful for third party development. Linden scripting language is the most important scripting language in OpenSim, which only supports virtual worlds' common applications but is weak in domain-specific applications. In order to extend Linden scripting functions, a general extended scheme is proposed in this paper. The structure and rule of OpenSim's scripting engine are analyzed. Then the management mechanisms of thread pool and queue are summed up. We present four extending approaches. Their implementations and scopes of applications are compared. We choose expanding service modules as the general extended scheme. By extending database service of the item bank, scripting functions (e.g., llMakeTest) are developed to support teaching evaluation in 3D virtual learning environments on OpenSim platform. The correctness of the extended scheme is proved by the case study. The scheme provides a guideline for developing Linden scripting functions for specific applications. It is verified that expanding OpenSim's domain-specific applications based on scripting technology is feasible.
Starting Page	488
Ending Page	492
File Size	404562
Page Count	5
File Format	PDF
ISBN	9781467349307
ISSN	15301362
DOI	10.1109/APSEC.2012.111
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-12-04
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Education Engines Libraries Instruction sets Electronic publishing Internet extended scheme OpenSim Linden scripting language scripting engine
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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