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Displaying 1-9 out of 9 total
Parametric Design and Performance Analysis of a Decoupled Service-Oriented Prediction Framework Based on Embedded Numerical Software
IEEE Transactions on Services Computing
By George Kousiouris,Andreas Menychtas,Dimosthenis Kyriazis,Kleopatra Konstanteli,Spyridon V. Gogouvitis,Gregory Katsaros,Theodora A. Varvarigou
Issue Date:October 2013
In modern utility computing infrastructures, like grids and clouds, one of the significant actions of a service provider is to predict the resources needed by the services included in its platform in an automated fashion for service provisioning optimizati...
Admission Control for Elastic Cloud Services
2012 IEEE 5th International Conference on Cloud Computing (CLOUD)
By Kleopatra Konstanteli,Tommaso Cucinotta,Konstantinos Psychas,Theodora Varvarigou
Issue Date:June 2012
This paper presents an admission control test for deciding whether or not it is worth to admit a set of services into a Cloud, and in case of acceptance, obtain the optimum allocation for each of the components that comprise the services. In the proposed m...
Probabilistic admission control for elastic cloud computing
Service-Oriented Computing and Applications, IEEE International Conference on
By Kleopatra Konstanteli,Theodora Varvarigou,Tommaso Cucinotta
Issue Date:December 2011
This paper tackles the problem of optimum allocation of elastic services on virtualized physical resources by incorporating a probabilistic approach in terms of availability guarantees, which allows for reducing the physical computational resources that ar...
An Architectural Approach for Event-Based Execution Management in Service Oriented Infrastructures
Symbolic and Numeric Algorithms for Scientific Computing, International Symposium on
By Spyridon V. Gogouvitis, Kleopatra Konstanteli, Dimosthenis Kyriazis, Theodora Varvarigou
Issue Date:September 2010
In order to enable interactive applications to benefit from the offerings of the Cloud paradigm, factors such as QoS and event handling need to be taken into consideration in the development of new platforms. In this paper we propose a hierarchical Executi...
A Service-Oriented Framework for GNU Octave-Based Performance Prediction
Services Computing, IEEE International Conference on
By George Kousiouris, Dimosthenis Kyriazis, Kleopatra Konstanteli, Spyridon Gogouvitis, Gregory Katsaros, Theodora Varvarigou
Issue Date:July 2010
Cloud/Grid environments are characterized by a diverse set of technologies used for communication, execution and management. Service Providers, in this context, need to be equipped with an automated process in order to optimize service provisioning through...
Platform-as-a-Service Architecture for Real-Time Quality of Service Management in Clouds
Internet and Web Applications and Services, International Conference on
By Michael Boniface, Bassem Nasser, Juri Papay, Stephen C. Phillips, Arturo Servin, Xiaoyu Yang, Zlatko Zlatev, Spyridon V. Gogouvitis, Gregory Katsaros, Kleopatra Konstanteli, George Kousiouris, Andreas Menychtas, Dimosthenis Kyriazis
Issue Date:May 2010
Cloud computing offers the potential to dramatically reduce the cost of software services through the commoditization of information technology assets and on-demand usage patterns. However, the complexity of determining resource provision policies for appl...
Real-Time Guarantees in Flexible Advance Reservations
Computer Software and Applications Conference, Annual International
By Kleopatra Konstanteli, Dimosthenis Kyriazis, Theodora Varvarigou, Tommaso Cucinotta, Gaetano Anastasi
Issue Date:July 2009
This paper deals with the problem of scheduling workflow applications with Quality of Service (QoS) constraints, comprising real-time and interactivity constraints, over a service-oriented Grid network. A novel approach is proposed, in which high-level Adv...
Hybrid tracking approach for assistive environments
Found in: Proceedings of the 2nd International Conference on PErvsive Technologies Related to Assistive Environments (PETRA '09)
By Constantinos Lalos, Kleopatra Konstanteli, Theodora Varvarigou, Vasilios Anagnostopoulos
Issue Date:June 2009
Camera based supervision is a critical component for patient monitoring in assistive environments. However, visual tracking still remains one of the biggest challenges in the area computer vision although it has been extensively studied during the previous...
Realtime-enabled workflow management in service oriented infrastructures
Found in: Proceeding of the 1st ACM workshop on Analysis and retrieval of events/actions and workflows in video streams (AREA '08)
By Andreas Menychtas, Dimosthenis Kyriazis, George Kousiouris, Kleopatra Konstanteli, Spyridon V. Gogouvitis, Theodora Varvarigou, Theodoros Polychniatis
Issue Date:October 2008
Many applications, and especially the ones implementing multi-user collaborative environments, fall within the context of soft real time systems in which only small deviations from timing constraints are allowed. Furthermore, there is a growing trend that ...
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