Theodora Varvarigou

Theodora A. Varvarigou received her B. Tech degree from the National Technical University of Athens, Athens, Greece in 1988, MS degrees in Electrical Engineering (1989) and in Computer Science (1991) from Stanford University, Stanford, California in 1989, and her Ph.D. from Stanford University in 1991. She worked at AT&T Bell Labs, Holmdel, New Jersey between 1991 and 1995. Between 1995 and 1997 she worked as an Assistant Professor at the Technical University of Crete, Chania, Greece. Since 1997, she was elected as an Assistant Professor, and since 2007, she is a Professor at the National Technical University of Athens, and Director of the Postgraduate Course “Engineering Economics Systems.” Prof. Varvarigou has great experience in the area of semantic Web technologies, scheduling over distributed platforms, embedded systems, and grid computing. In this area, she has published more than 170 papers in leading journals and conferences. She has participated and coordinated several EU funded projects such as IRMOS, SCOVIS, POLYMNIA, Akogrimo, NextGRID, BEinGRID, Memphis, MKBEEM, MARIDES, CHALLENGERS, FIDIS, and others.

Publications

Human Face Region Detection Driving Activity Recognition in Video
Human Face Region Detection Driving Activity Recognition in Video
Anastasios Doulamis, Athanasios Voulodimos, Theodora Varvarigou. © 2018. 22 pages.
Automatic recognition of human actions from video signals is probably one of the most salient research topics of computer vision with a tremendous impact for many applications....
Human Face Region Detection Driving Activity Recognition in Video
Human Face Region Detection Driving Activity Recognition in Video
Anastasios Doulamis, Athanasios Voulodimos, Theodora Varvarigou. © 2014. 20 pages.
Automatic recognition of human actions from video signals is probably one of the most salient research topics of computer vision with a tremendous impact for many applications....
Data Intensive Storage Services for Cloud Environments
Data Intensive Storage Services for Cloud Environments
Dimosthenis Kyriazis, Athanasios Voulodimos, Spyridon V. Gogouvitis, Theodora Varvarigou. © 2013. 342 pages.
With the evolution of digitized data, our society has become dependent on services to extract valuable information and enhance decision making by individuals, businesses, and...
Achieving Real-Time in Distributed Computing: From Grids to Clouds
Achieving Real-Time in Distributed Computing: From Grids to Clouds
Dimosthenis Kyriazis, Theodora Varvarigou, Kleopatra G. Konstanteli. © 2012. 330 pages.
Real-time systems are of importance to a large number of university laboratories and research institutes worldwide, and without the proper integration of real-time into...
Service Quality Model Evaluation
Service Quality Model Evaluation
Fotis Aisopos, Magdalini Kardara, Vrettos Moulos, Athanasios Papaoikonomou, Konstantinos Tserpes, Theodora Varvarigou. © 2012. 15 pages.
In this chapter, we present the current state-of-the-art technology and methodologies regarding the evaluation of the provided quality of service in service oriented...
Taxonomy and State of the Art of Service Discovery Mechanisms and Their Relation to the Cloud Computing Stack
Taxonomy and State of the Art of Service Discovery Mechanisms and Their Relation to the Cloud Computing Stack
George Kousiouris, Dimosthenis Kyriazis, Theodora Varvarigou, Eduardo Oliveros, Patrick Mandic. © 2012. 19 pages.
Service Discovery mechanisms are gaining interest in the last years due to the growing bulk of information available, especially to distributed computing infrastructures like...
Service Level Agreements for Real-Time Service-Oriented Infrastructures
Service Level Agreements for Real-Time Service-Oriented Infrastructures
Roland Kübert, Georgina Gallizo, Theodoros Polychniatis, Theodora Varvarigou, Eduardo Oliveros, Stephen C. Phillips, Karsten Oberle. © 2012. 27 pages.
Service Level Agreements (SLAs) are nowadays used as a cornerstone for building service-oriented architectures. SLAs have been closely investigated in the scope of distributed...
A Study on the Effect of Application and Resource Characteristics on the QoS in Service Provisioning Environments
A Study on the Effect of Application and Resource Characteristics on the QoS in Service Provisioning Environments
Theodora Varvarigou, Konstantinos Tserpes, Dimosthenis Kyriazis, Fabrizio Silvestri, Nikolaos Psimogiannos. © 2012. 20 pages.
This article deals with the problem of quality provisioning in business service-oriented environments, examining the resource selection process as an initial matching of the...
Grid Workflows with Encompassed Business Relationships: An Approach Establishing Quality of Service Guarantees
Grid Workflows with Encompassed Business Relationships: An Approach Establishing Quality of Service Guarantees
Dimosthenis Kyriazis, Andreas Menychtas, Theodora Varvarigou. © 2012. 17 pages.
This chapter focuses on presenting and describing an approach that allows the mapping of workflow processes to Grid provided services by not only taking into account the quality...
Scenarios of Next Generation Grid Applications in Collaborative Environments: A Business–Technical Analysis
Scenarios of Next Generation Grid Applications in Collaborative Environments: A Business–Technical Analysis
Vassiliki Andronikou, Dimosthenis Kyriazis, Magdalini Kardara, Dimitrios Halkos, Theodora Varvarigou. © 2012. 21 pages.
The Grid has the potential to make a significant advance beyond the Internet, by turning it from a passive information medium into an active tool for creating and exploring new...
Taxonomy and State of the Art of Service Discovery Mechanisms and Their Relation to the Cloud Computing Stack
Taxonomy and State of the Art of Service Discovery Mechanisms and Their Relation to the Cloud Computing Stack
George Kousiouris, Dimosthenis Kyriazis, Theodora Varvarigou, Eduardo Oliveros, Patrick Mandic. © 2012. 19 pages.
Service Discovery mechanisms are gaining interest in the last years due to the growing bulk of information available, especially to distributed computing infrastructures like...
Service Level Agreements for Real-Time Service-Oriented Infrastructures
Service Level Agreements for Real-Time Service-Oriented Infrastructures
Roland Kübert, Georgina Gallizo, Thodoris Polychniatis, Theodora Varvarigou, Eduardo Oliveros, Stephen C. Phillips, Karsten Oberle. © 2012. 27 pages.
Service Level Agreements (SLAs) are nowadays used as a cornerstone for building service-oriented architectures. SLAs have been closely investigated in the scope of distributed...
Monitoring in Federated and Self-Manageable Clouds
Monitoring in Federated and Self-Manageable Clouds
Stefanos Koutsoutos, Spyridon V. Gogouvitis, Dimosthenis Kyriazis, Theodora Varvarigou. © 2012. 17 pages.
The emergence of Service Clouds and the Future Internet has lead to a lot of research taking place in the area of Cloud frameworks and solutions. The complexity of these systems...
Execution Management for Mobile Service-Oriented Environments
Execution Management for Mobile Service-Oriented Environments
Kleopatra G. Konstanteli, Tom Kirkham, Julian Gallop, Brian Matthews, Ian Johnson, Magdalini Kardara, Theodora Varvarigou. © 2012. 21 pages.
This paper presents an Execution Management System (EMS) for Grid services that builds on the Open Grid Services Architecture (OGSA) while achieving “mobile awareness” by...
Policy Testing in Virtual Environments: Addressing Technical and Legal Challenges
Policy Testing in Virtual Environments: Addressing Technical and Legal Challenges
Magdalini Kardara, Omri Fuchs, Eleni Kosta, Fotis Aisopos, Ilias Spais, Theodora Varvarigou. © 2012. 21 pages.
Governments want to improve their policy making process by being able to accurately predict the impact of prospective policy measures to the community. Current e-government tools...
A Study on the Effect of Application and Resource Characteristics on the QoS in Service Provisioning Environments
A Study on the Effect of Application and Resource Characteristics on the QoS in Service Provisioning Environments
Theodora Varvarigou, Konstantinos Tserpes, Dimosthenis Kyriazis, Fabrizio Silvestri, Nikolaos Psimogiannos. © 2010. 21 pages.
This article deals with the problem of quality provisioning in business service-oriented environments, examining the resource selection process as an initial matching of the...
Execution Management for Mobile Service-Oriented Environments
Execution Management for Mobile Service-Oriented Environments
Kleopatra G. Konstanteli, Tom Kirkham, Julian Gallop, Brian Matthews, Ian Johnson, Magdalini Kardara, Theodora Varvarigou. © 2010. 21 pages.
This paper presents an Execution Management System (EMS) for Grid services that builds on the Open Grid Services Architecture (OGSA) while achieving “mobile awareness” by...