International Journal of Information Technology and Computer Science(IJITCS)

ISSN: 2074-9007 (Print), ISSN: 2074-9015 (Online)

Published By: MECS Press

IJITCS Vol.4, No.1, Feb. 2012

Discrete Simulation of the Remote Access to the Resources of a Virtual Research Laboratory

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Radi Romansky

Index Terms

Remote access,processes evaluation,queuing model,simulation,assessments


This article discusses the problem of an evaluation of the remote access to the resources of a Virtual Research Lab (VRL) and information servicing investigation by using queuing model and program simulation. The results presented here are the final part of general investigation of proposed architecture of the VRL developed in the frame of two years scientific project. Some results from the initial phases of the investigation (functional, deterministic and stochastic modeling) are discussed in other publications of the author. The purpose of this article is to present a simulation organization and performance factors evaluation of the remote access and information servicing in the VRL. In this connection formalization and an abstract model are made. An extension of this formalization based on the queuing theory is made and a general queuing model for the simulation organization is developed. The program realization of the simulation experiments is made by using the system WebGPSS. Object of investigation is the user access to the resources and some variants are evaluated, for example ‘single-user access to a single resource’ and ‘multiple-user access to multiple resources’. Some experimental results are discussed. Different assessments for the components that take part in the remote access are calculated and presented (utilization, workload, waiting time, etc.)

Cite This Paper

Radi Romansky, "Discrete Simulation of the Remote Access to the Resources of a Virtual Research Laboratory", International Journal of Information Technology and Computer Science(IJITCS), vol.4, no.1, pp.1-8, 2012. DOI: 10.5815/ijitcs.2012.01.01


[1]C. Schmid, Grid supported virtual laboratories with collaboration in engineering education. International Journal of Online Engineering (iJOE), Vol. 4, 2008 (

[2]W. Funika et al. Environment for collaborative development and execution of virtual laboratory applications. Lecture Notes on CS, Vol.5101, 2008, pp.446-455.

[3]H. Afsarmanesh et al., Towards a multi-layer architecture for scientific virtual laboratories. In book High Performance Computing and Network, 2010, pp. 163-176

[4]G. Gutiérrez-Carreón, et al. An infrastructure for educa-tional virtual laboratories based on Semantic Web and Grid Computing, 2009 ( websci09_submission_14.pdf)

[5]E. Grosclaude, Grid virtual laboratory architecture. In Euro-Par Workshop: Parallel Processing, 2008, pp.164173.

[6]R. Romansky et al., Building of a virtual research laboratory in the field of electronic and computer technologies. Project Report, Technical University of Sofia, 2011 (in Bulgarian).

[7]R. Romansky, Virtual research laboratory – conceptual model and preliminary stochastic investigation. Proc. of the Int’l Conference on e-Learning and Knowledge Society (e-Learning’10), Riga, Latvia, 26-27.VIII.2010, pp.136-141.

[8]I. Stahl, WebGPSS, Beliber AB, 2009, 

[9]J. Barrasa, A. Gomez Perez. Upgrading reltionla legacy data to the semántica web. Proc. Of the 15th International Conf. on Wprld Wide Web, 2006, pp. 1069-1070.

[10]J. Liegle, P. :eso. Evaluation of a virtual lab environment for teaching web application development. Information Systems Educational Journal, vol.5, No7, 2007, pp.3-11. 

[11]R. Romansky, E. Parvanova. Formalization and Discrete Modeling of the Information Servicing in Distributed Learning Environment. Communication & Cognition, Belgium, Vol.43, No.1&2, 2010, pp.1-15.

[12]Romansky, R. Deterministic Modeling of Virtual Research Laboratory by using Petri Net. International Journal of Engineering, Science and Technology (ISSN 2141-2839), vol. 3, No. 1, 2011, pp.1-9.