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On 1/11/2001, i obtained the position of Researcher (Assistant Professor)
in Computer Science from the faculty of “Scienze dealla Fromazione”
(Arts and Teaching Faculty) of the University of Turin (Italy), after a public competition,
won in September 2001. In November 2005, the position has been confirmed, becoming a
Senior Researcher.
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Topics:
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Fluid and Hybrid Performance Evaluation Models: study of numerical and analytical
techniques to evaluate the performance of complex systems, using performance models described
by mixed continuous and discrete components. In particular, i started by extending the
formalism of Fluid Stochastic Petri Nets introduced by Trivedi and Kulkarni, adding new
features and studying new solution techniques to compute both transient and steady state
performance indices. Current studies deal with the efficient solution of Hybrid Bounded Fluid
Models of the first and second order.
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Tools for the Performance Evaluation: development of the Software Tool “DrawNET”
(www.draw-net.com) - a framework to support the
composition of performance evaluation models and formalisms. In particular, new object
oriented metodology to develop models in a multi-formalism, multi-solution environment
has been defined. These metodologies have been supported by the devlopment of a generic
graphical user interface (GUI), an abstract data definition language (DDL), and a set of
access libraries, written in Java language, and based on XML technology.
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Analysis of Computer Networks: study of mobile telephone networks, “Peer-to-Peer”
(P2P) systems, and sensor and ad-hoc networks. Several analytical techniques (mainly based
on fluid and hybrid performance evaluation models) have been developed and applied to
various kind of communication networks. In particular they have been used to study mobile
phone networks (GPRS), the TCP/IP protocol and web services. Peer-to-Peer system have been
studied for what concern the ability to locate a particular resource, and the time required
to download it. Most recent studies concern the devolepement of spatial fluid models to
optimize the energy consumption in sensor networks, and the study of efficient broadcast
protocols in vehicular networks.
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E-learning: study and development of a platform to create virtual reality based,
e-learning shared applications based on low-cost technologies. In particular, simple and
common web technologies (like Javascript and PhP) have been integrated with Virtual
Reality applications (such as Adobe Atmosphere in the beginning and now Blaxxun), to
recreate a Virtual Reality environment in which implement cooperative exercise to support
the other common learning activities.
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| Marco Gribaudo - Dipartimento di Informatica - Università
degli Studi di Torino - Turin - Italy |
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