Browsing Τμήμα Πληροφορικής / Department of Computer Science by Author "Pallis, George C."

Now showing items 21-40 of 69

    • Conference Object  

      The Dynamics of Vehicular Networks in Large-Scale Urban Environments 

      Loulloudes, Nicholas; Pallis, George C.; Dikaiakos, Marios D. (Institute of Electrical and Electronics Engineers Inc., 2016)
      Vehicular Ad hoc Networks (VANETs) have emerged as a platform to support Intelligent Transportation Applications. A key to the development of protocols and services for IVC lies in the knowledge of the topological ...
    • Article  

      Editorial for special issue Internet-based Content Delivery 

      Fortino, G.; Mastroianni, C.; Pallis, George C.; Pathan, M.; Vakali, Athena I. (2011)
      The main technical underpinnings of Cloud Computing infrastructures and services include virtualization, service-orientation, elasticity, multi-tenancy, power efficiency, and economics of scale. The perceived advantages ...
    • Conference Object  

      Effective keyword search for software resources installed in large-scale Grid infrastructures 

      Pallis, George C.; Katsifodimos, A.; Dikaiakos, Marios D. (2009)
      In this paper, we investigate the problem of supporting keyword-based searching for the discovery of software resources that are installed on the nodes of largescale, federated Grid computing infrastructures. We address a ...
    • Conference Object  

      Enabling Cloud Application Portability 

      Antoniades, Demetris; Loulloudes, Nicholas; Foudoulis, Athanasios; Sophokleous, Chrystalla; Trihinas, Demetris; Pallis, George C.; Dikaiakos, Marios D.; Kornmayer, H. (Institute of Electrical and Electronics Engineers Inc., 2015)
      The Cloud Application Management Framework (CAMF) enables Cloud application developers to design, deploy and manage their applications through an intuitive blueprint design. In this paper we show how Cloud application ...
    • Article  

      Enabling Interoperable Cloud Application Management through an Open Source Ecosystem 

      Loulloudes, Nicholas; Sofokleous, Chrystalla; Trihinas, Demetris; Dikaiakos, Marios D.; Pallis, George C. (2015)
      Cloud computing enables on-demand provisioning of computing resources to IT solutions, following a utility-based approach. Technology and standardization developments in traditional public utilities enable customers to ...
    • Article  

      Evaluating Cloud Service Elasticity Behavior 

      Copil, G.; Truong, H. -L; Moldovan, D.; Dustdar, S.; Trihinas, Demetris; Pallis, George C.; Dikaiakos, Marios D. (2015)
      To optimize the cost and performance of complex cloud services under dynamic requirements, workflows and diverse cloud offerings, we rely on different elasticity control processes. An elasticity control process, when being ...
    • Conference Object  

      Evaluating the utility of content delivery networks 

      Stamos, Kostas; Vakali, Athena I.; Pallis, George C.; Dikaiakos, Marios D. (2009)
      Content Delivery Networks (CDNs) balance costs and quality in services related to content delivery. This has urged many Web entrepreneurs to make contracts with CDNs. In the literature, a wide range of techniques has been ...
    • Article  

      Feel the world: A mobile framework for participatory sensing 

      Phokas, T.; Efstathiades, Hariton; Pallis, George C.; Dikaiakos, Marios D. (2013)
      Nowadays, smartphones have almost replaced basic feature phones all over the world. Today's smartphones come equipped with an increasing set of embedded sensors, computational and communication resources. All these gave ...
    • Article  

      Foreword 

      Pallis, George C. (2012)
    • Conference Object  

      FRES-CAR: An adaptive cache replacement policy 

      Pallis, George C.; Vakali, Athena I.; Sidiropoulos, E. (2005)
      Caching Web objects has become a common practice towards improving content delivery and users' servicing. A Web caching framework is characterized by its cache replacement policy, which identifies the objects (i.e. the ...
    • Conference Object  

      Harvesting large-scale grids for software resources 

      Katsifodimos, A.; Pallis, George C.; Dikaiakos, Marios D. (2009)
      Grid infrastructures are in operation around the world, federating an impressive collection of computational resources and a wide variety of application software. In this context, it is important to establish advanced ...
    • Conference Object  

      Identification of key locations based on online social network activity 

      Efstathiades, Hariton; Antoniades, Demetris; Pallis, George C.; Dikaiakos, Marios D. (Association for Computing Machinery, Inc, 2015)
      Ubiquitous Internet connectivity enables users to update their Online Social Network profile from any location and at any point in time. These, often geo-tagged, data can be used to provide valuable information to closely ...
    • Conference Object  

      Identifying clusters with attribute homogeneity and similar connectivity in information networks 

      Papadopoulos, Antonios I.; Pallis, George C.; Dikaiakos, Marios D. (2013)
      With the rapid emergence of the internet world, a lot of information networks become available every day. In many cases, these information networks contain objects connected by multiple links and described by different ...
    • Article  

      Improving content delivery by exploiting the utility of CDN servers 

      Pallis, George C. (2012)
      As more aspects of our work and life move online and the Internet expands beyond a communication medium to become a platform for business and society, Content Delivery Networks (CDNs) have recently gained momentum in the ...
    • Article  

      Information dissemination in mobile CDNs 

      Loulloudes, Nicholas; Pallis, George C.; Dikaiakos, Marios D. (2008)
    • Article  

      Insight and perspectives for Content Delivery Networks 

      Pallis, George C.; Vakali, Athena I. (2006)
      Content delivery over the Web has become an important element of improving web performance. Content delivery Networks (CDN) has been proposed to maximize bandwidth, improve accessibility, and maintain correctness through ...
    • Article  

      Integrating caching techniques in CDNs using a classification approach 

      Pallis, George C.; Stamos, Kostas; Vakali, Athena I.; Thomos, Charilaos; Andreadis, Georgios (2008)
      Content Delivery Networks (CDNs) provide an efficient support for serving "resource-hungry" applications while minimizing the network impact of content delivery as well as shifting the traffic away from overloaded origin ...
    • Article  

      Integrating caching techniques on a content distribution network 

      Stamos, Kostas; Pallis, George C.; Vakali, Athena I. (2006)
      Web caching and replication tune capacity with performance and they have become essential components of the Web. In practice, caching and replication techniques have been applied in proxy servers and Content Distribution ...
    • Conference Object  

      JCatascopia: Monitoring elastically adaptive applications in the cloud 

      Trihinas, Demetris; Pallis, George C.; Dikaiakos, Marios D. (IEEE Computer Society, 2014)
      Over the past decade, Cloud Computing has rapidly become a widely accepted paradigm with core concepts such as elasticity, scalability and on demand automatic resource provisioning emerging as next generation Cloud ...
    • Conference Object  

      A latency-based object placement approach in content distribution networks 

      Pallis, George C.; Vakali, Athena I.; Stamos, Kostas; Sidiropoulos, Antonis; Katsaros, Dimitrios S.; Manolopoulos, Yannis (2005)
      Content Distribution Networks (CDNs) are increasingly being used to disseminate data in today's Internet. The growing interest in CDNs is motivated by a common problem across disciplines: how does one reduce the load on ...