Δημοσιεύσεις

@article{kourouthanassis2014adoption,

title = {Adoption behaviour differences for mobile data services: m-internet vs. m-portals},

author = {Panos E Kourouthanassis and George M Giaglis and Dimitrios Karaiskos and Efpraxia Zamani},

year  = {2014},

date = {2014-01-01},

journal = {International Journal of Mobile Communications},

volume = {12},

number = {3},

pages = {207--228},

publisher = {Inderscience Publishers Ltd},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{anifantis2014spatio,

title = {A spatio-stochastic framework for cross-layer design in cognitive radio networks},

author = {Evangelos Anifantis and Vasileios Karyotis and Symeon Papavassiliou},

year  = {2014},

date = {2014-01-01},

journal = {IEEE Transactions on Parallel and Distributed Systems},

volume = {25},

number = {11},

pages = {2762--2771},

publisher = {IEEE},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{pappas2014towards,

title = {Towards Emotional Satisfaction in Social Network Services Use},

author = {Ilias O Pappas and Panos Kourouthanassis and Sofia Papavlasopoulou},

year  = {2014},

date = {2014-01-01},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{stai2014exploiting,

title = {Exploiting socio-physical network interactions via a utility-based framework for resource management in mobile social networks},

author = {Eleni Stai and Vasileios Karyotis and Symeon Papavassiliou},

year  = {2014},

date = {2014-01-01},

journal = {IEEE Wireless Communications},

volume = {21},

number = {1},

pages = {10--17},

publisher = {IEEE},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{arkoulis2014discovering,

title = {Discovering and exploiting spectrum power correlations in cognitive radio networks: an experimentally driven approach},

author = {Stamatios Arkoulis and Evangelos Anifantis and Vasileios Karyotis and Symeon Papavassiliou and Nikolaos Mitrou},

year  = {2014},

date = {2014-01-01},

journal = {EURASIP Journal on Wireless Communications and Networking},

volume = {2014},

number = {1},

pages = {1--14},

publisher = {SpringerOpen},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{kourouthanassis2014m,

title = {M-COMMERCE RESEARCH},

author = {Panos E KOUROUTHANASSIS and Christos K GEORGIADIS},

year  = {2014},

date = {2014-01-01},

journal = {International journal of mobile communications (Print)},

volume = {12},

number = {1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{anifantis2014exploiting,

title = {Exploiting social features for improving cognitive radio infrastructures and social services via combined MRF and back pressure cross-layer resource allocation},

author = {Evangelos Anifantis and Eleni Stai and Vasileios Karyotis and Symeon Papavassiliou},

year  = {2014},

date = {2014-01-01},

journal = {Computational Social Networks},

volume = {1},

number = {1},

pages = {1--27},

publisher = {SpringerOpen},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{korfiatis2014work,

title = {Work-related factors influencing doctors search behaviors and trust toward medical information resources},

author = {Nikolaos Korfiatis and Panos Kourouthanasis and George Alexias and Petros Kostagiolas},

year  = {2014},

date = {2014-01-01},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mertz2014146,

title = {Using dependency bigrams and discourse connectives for predicting the helpfulness of online reviews},

author = {M. Mertz and N. Korfiatis and R. V. Zicari},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927759943&doi=10.1007%2f978-3-319-10491-1_15&partnerID=40&md5=331cf82d30606122e619af6f00627b69},

doi = {10.1007/978-3-319-10491-1_15},

year  = {2014},

date = {2014-01-01},

journal = {Lecture Notes in Business Information Processing},

volume = {188},

pages = {146-152},

note = {cited By 4},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kostagiolas201480,

title = {Work-related factors influencing doctors search behaviors and trust toward medical information resources},

author = {P. Kostagiolas and N. Korfiatis and P. Kourouthanasis and G. Alexias},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84890935273&doi=10.1016%2fj.ijinfomgt.2013.11.009&partnerID=40&md5=3cae18dcd76c81f5755266e29efff789},

doi = {10.1016/j.ijinfomgt.2013.11.009},

year  = {2014},

date = {2014-01-01},

journal = {International Journal of Information Management},

volume = {34},

number = {2},

pages = {80-88},

note = {cited By 35},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Anifantis2014,

title = {Exploiting social features for improving cognitive radio infrastructures and social services via combined MRF and back pressure cross-layer resource allocation},

author = {E. Anifantis and E. Stai and V. Karyotis and S. Papavassiliou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029244666&doi=10.1186%2fs40649-014-0004-1&partnerID=40&md5=c42a9d50f41455d96e48947cf21d6431},

doi = {10.1186/s40649-014-0004-1},

issn = {21974314},

year  = {2014},

date = {2014-01-01},

journal = {Computational Social Networks},

volume = {1},

number = {1},

publisher = {SpringerOpen},

abstract = {The observed unbalance of spectrum utilization combined with the proliferation of wireless devices and the growth of online social networks call for a joint study of cognitive radios (CRs) and social networking towards improving the operation of both the underlying CR-capable communications infrastructures and of the corresponding dynamic networks. In this work, we address such issue and focus on the twofold direction of resource allocation in CRs and social feature exploitation with the aim of providing a holistic cross-layer optimization framework that jointly considers information from the social layer as well as the traditional network protocol layers. We combine Markov random field (MRF) cross-layer decisions with back pressure (BP) features for the allocation of resources, in order to improve the operation of CRs that act as social network substrate. Espousing the recent advances in the field of dynamic spectrum allocation, the proposed BP-enhanced MRF (BPeMRF) network optimization serves the purpose of improving in a low complexity manner the capacity of agile infrastructures, which are required to adapt fast according to the demands of the volatile CR environment and the overlaying dynamic online social networks. In addition, within the proposed socially enhanced BPeMRF (SeBPeMRF) approach, we leverage emerging social information to further enhance performance. The obtained results exhibit the efficacy of BPeMRF/SeBPeMRF regarding the above objectives and demonstrate significant promise for further improving the corresponding infrastructures and services. © 2014, Anifantis et al.; licensee Springer.},

note = {cited By 8},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Anifantis20142762,

title = {A spatio-stochastic framework for cross-layer design in cognitive radio networks},

author = {E. Anifantis and V. Karyotis and S. Papavassiliou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908084132&doi=10.1109%2fTPDS.2013.2297108&partnerID=40&md5=9868e8f746e1006f0805ae57204a9eeb},

doi = {10.1109/TPDS.2013.2297108},

issn = {10459219},

year  = {2014},

date = {2014-01-01},

journal = {IEEE Transactions on Parallel and Distributed Systems},

volume = {25},

number = {11},

pages = {2762-2771},

publisher = {IEEE Computer Society},

abstract = {In this paper, we address the problem of distributed resource management for secondary users in Cognitive Radio Networks (CRNs), through a topology aware and frequency agile cross-layer approach. We exploit the theory of spatial processes and propose a Markov Random Field (MRF) based framework, which enables secondary CRN users to achieve efficient and viable mechanisms in the lower protocol stack layers by exchanging local only information. Specifically, through Gibbs sampling secondary users can optimize in a distributed and parallel manner their channel allocation, medium access and routing without resolving to otherwise computationally demanding optimization approaches. Through analysis and simulation we exhibit the efficacy of the proposed framework and show that a semi-parallel implementation can significantly reduce the required overhead cost compared to the sequential Gibbs sampling approach, while retaining a very close performance to the latter. We also study the emerging trade-offs by demonstrating the performance benefits in terms of channel assignment, medium access and data flow. © 2014 IEEE.},

note = {cited By 4},

keywords = {Cognitive radio network; Cross layer optimization; Distributed computations; Gibbs sampling; Markov Random Fields; Spectrum sharing, Simulated annealing},

pubstate = {published},

tppubtype = {article}

}

@article{Mavromoustakis2014285,

title = {Cross-Layer Based Resource Management Frameworks for Mobile Cognitive Radio Networks},

author = {C. X. Mavromoustakis and E. Pallis and G. Mastorakis and V. Karyotis and E. Anifantis and S. Papavassiliou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959362682&doi=10.1007%2f978-3-319-06704-9-13&partnerID=40&md5=be185735c550b2ac5ccdb7fb9dfb5aa2},

doi = {10.1007/978-3-319-06704-9-13},

issn = {21967326},

year  = {2014},

date = {2014-01-01},

journal = {Modeling and Optimization in Science and Technologies},

volume = {3},

pages = {285-322},

publisher = {Springer Verlag},

abstract = {Resource management has been one of the most important aspects of Mobile Cognitive Radio Networks (MCRNs) since their inception. It engulfs fundamental network operations such as spectrum management, bandwidth allocation, channel access, data routing, transmission power assignment and energy management. All such mechanisms are necessary for achieving the delay/throughput requirements desired by modern network services and users. Compared to traditional wireless mobile networks, the MCRN environment poses additional challenges and complicated requirements to the above functions and resource management in general, which eventually lead to an urgent need for reconsideration of the employed wireless protocol stack. The objective in MCRNs would be to apply more efficient protocol hierarchies and achieve better management of the common available resources for both secondary and primary users, at the minimum possible cost and by leaving the minimum possible resource footprint, as required for all modern communications systems. The cross-layer design approach has been proven extremely useful towards this direction, especially for network types such as sensor, mesh and cognitive radios. It allowed exploiting the most appropriate network mechanisms, while bypassing monolithic and outdated requirements when possible. In this chapter, we focus exactly on this aspect of protocol architectures and network management, and present state-of-the-art cross-layer based resource management approaches for MCRNs. Initially, we present three important resource management frameworks, and then we provide directions for developing generic and adaptive resource management protocol architectures for MCRNs, based on cross-layer and component-based design principles emerging from the previously presented approaches. This is the first attempt to highlight the suitability of combining cross-layer with component-based network design, and this work will also sketch qualitatively the potential benefits of such approach. Finally, some practical considerations for the proposed architecture, along with directions for future research conclude the chapter. © 2014 Springer International Publishing Switzerland.},

note = {cited By 2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Karyotis201463,

title = {Evaluation of malware spreading in wireless multihop networks with churn},

author = {V. Karyotis and S. Papavassiliou},

editor = {Papavassiliou S. Gallais A. Mitton N.},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84915750171&doi=10.1007%2f978-3-319-13329-4_6&partnerID=40&md5=a87d7ee86d6d9c71332184f75a466edb},

doi = {10.1007/978-3-319-13329-4_6},

issn = {18678211},

year  = {2014},

date = {2014-01-01},

journal = {Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST},

volume = {140},

pages = {63-74},

publisher = {Springer Verlag},

abstract = {Modeling malware spreading in wireless networks has attracted significant interest lately, since this will increase the robustness of such networks that constitute the lion’s share of Internet access nowadays. However, all of previous works have considered networks with fixed number of devices. In this work, we focus on users that can dynamically join and leave the network (node churn) as a result of the effects of malware, or their own operation, i.e. energy depletion. We adopt and adapt a queuing-based model for malware spreading for the case of wireless distributed networks with churn. The corresponding methodology captures the dynamics of SIS-type malware, where nodes are always prone to receive new or already spreading infections over a long period. The employed framework can be exploited for quantifying network reliability and study network behavior, which can be further used for increasing the robustness of the system against the most severe attacks. © Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2014.},

note = {cited By 3; Conference of 6th International ICST Conference on Ad Hoc Networks, ADHOCNETS 2014 ; Conference Date: 18 August 2014 Through 19 August 2014; Conference Code:111559},

keywords = {Computer crime; Wireless ad hoc networks, Distributed networks; Energy depletion; Internet access; Network behaviors; Network reliability; Network robustness; Queuing network; Wireless multi-hop network, Malware},

pubstate = {published},

tppubtype = {article}

}

@article{Arkoulis2014,

title = {Discovering and exploiting spectrum power correlations in cognitive radio networks: An experimentally driven approach},

author = {S. Arkoulis and E. Anifantis and V. Karyotis and S. Papavassiliou and N. Mitrou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898839082&doi=10.1186%2f1687-1499-2014-17&partnerID=40&md5=4789636b51a25eda2ceb6d599b8fbb4d},

doi = {10.1186/1687-1499-2014-17},

issn = {16871472},

year  = {2014},

date = {2014-01-01},

journal = {Eurasip Journal on Wireless Communications and Networking},

volume = {2014},

publisher = {Hindawi Publishing Corporation},

abstract = {In this paper, we focus on increasing the spectrum awareness of cognitive radio users through statistical processing of spectrum sensing data, obtained via wideband energy-detection-based sensing techniques. Based on observations over real spectrum power measurements, we advocate the existence of correlation properties in the sensed power of measured neighboring channels and propose an inference methodology for exploiting them towards acquiring a more accurate view of the underlying wireless environment. To highlight the benefits of the proposed correlation-based inference methodology on cognitive radio systems, we emphasize on enhancements of white space discovery and channel selection processes, while we thoroughly discuss the impact of our findings on existing relevant approaches. Based on a systematic wireless spectrum survey in the metropolitan area of Athens, Greece, we validate our proposed methodology and assess the achieved performance improvements through the obtained measurement data, confirming its potential value in future cognitive radio networks. © 2014 Arkoulis et al.; licensee Springer.},

note = {cited By 6},

keywords = {Coarse-fine sensing; Energy detection; Power correlations; Spectrum occupancies; Spectrum sensing, Cognitive radio, Radio systems; Sensors; Surveys},

pubstate = {published},

tppubtype = {article}

}

@article{Stai201410,

title = {Exploiting socio-physical network interactions via a utility-based framework for resource management in mobile social networks},

author = {E. Stai and V. Karyotis and S. Papavassiliou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896446369&doi=10.1109%2fMWC.2014.6757892&partnerID=40&md5=f25c02100f1cd76420991d05f7580ad9},

doi = {10.1109/MWC.2014.6757892},

issn = {15361284},

year  = {2014},

date = {2014-01-01},

journal = {IEEE Wireless Communications},

volume = {21},

number = {1},

pages = {10-17},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {Mobile social networks have the lion's share in modern mobile telecommunications, and their interaction with the underlying infrastructure networks has attracted significant attention due to its impact on resource management. In this article, we present and demonstrate a framework for addressing such interplay between online social networks and wireless communications by exploiting principles from the theory of utility-based engineering and elements from social network analysis. We aim at a holistic design framework that allows the joint development of improved resource management mechanisms for future mobile wireless infrastructures and their social counterparts. We demonstrate the proposed methodology and reveal the key aspects of designing and exploiting convenient utility functions within the framework of network science in order to better manage the available resources, improve infrastructures, and eventually obtain from them the maximum possible benefit. We establish the above principles and emerging design potentials in future complex networks by presenting two tangible examples where personalized advertising and topology control in MSNs are used to exploit and validate different network and individual socio-utility maximization features, respectively. © 2014 IEEE.},

note = {cited By 16},

keywords = {Infrastructure networks; Mobile social networks; Mobile telecommunications; On-line social networks; Personalized advertisings; Resource management; Utility-based framework; Wireless communications, Natural resources management; Resource allocation; Telecommunication networks; Wireless telecommunication systems, Social networking (online)},

pubstate = {published},

tppubtype = {article}

}

@article{Pappas2014187,

title = {Moderating effects of online shopping experience on customer satisfaction and repurchase intentions},

author = {I. O. Pappas and A. G. Pateli and M. N. Giannakos and V. Chrissikopoulos},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84918822624&doi=10.1108%2fIJRDM-03-2012-0034&partnerID=40&md5=7d9ac2c7d121c0e2d415d164b88c6936},

doi = {10.1108/IJRDM-03-2012-0034},

year  = {2014},

date = {2014-01-01},

journal = {International Journal of Retail and Distribution Management},

volume = {42},

number = {3},

pages = {187-204},

note = {cited By 190},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Panayiotis2014237,

title = {Hybrid model for measurement of building vulnerability},

author = {V. Panayiotis and P. Adamantia and P. Maria},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84907006712&doi=10.4028%2fwww.scientific.net%2fKEM.628.237&partnerID=40&md5=9079d0d4f9ee4e4bf505ac482efedd7c},

doi = {10.4028/www.scientific.net/KEM.628.237},

year  = {2014},

date = {2014-01-01},

journal = {Key Engineering Materials},

volume = {628},

pages = {237-242},

note = {cited By 1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mikalef201443,

title = {Business alignment in the procurement domain: A study of antecedents and determinants of supply chain performance},

author = {P. Mikalef and A. Pateli and R. Batenburg and R. Wetering},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904869219&doi=10.12821%2fijispm020103&partnerID=40&md5=30b232635d5a6969aeea950d922c1eff},

doi = {10.12821/ijispm020103},

year  = {2014},

date = {2014-01-01},

journal = {International Journal of Information Systems and Project Management},

volume = {2},

number = {1},

pages = {43-59},

note = {cited By 21},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{christopoulou2013learning,

title = {Learning Activities in a Sociable Smart City.},

author = {Eleni Christopoulou and Dimitrios Ringas},

year  = {2013},

date = {2013-01-01},

urldate = {2013-01-01},

journal = {IxD&A},

volume = {17},

pages = {29--42},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{arkoulis2013optimal,

title = {On the optimal, fair and channel-aware cognitive radio network reconfiguration},

author = {Stamatios Arkoulis and Evangelos Anifantis and Vasileios Karyotis and Symeon Papavassiliou and Nikolaos Mitrou},

year  = {2013},

date = {2013-01-01},

journal = {Computer Networks},

volume = {57},

number = {8},

pages = {1739--1757},

publisher = {Elsevier},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{bardaki2013information,

title = {An information quality evaluation framework of object tracking systems},

author = {Cleopatra Bardaki and Panos Kourouthanassis and Katerina Pramatari and Georgios Doukidis},

year  = {2013},

date = {2013-01-01},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{cheng2013diffusion,

title = {Diffusion models for information dissemination dynamics in wireless complex communication networks},

author = {Shin-Ming Cheng and Vasileios Karyotis and Pin-Yu Chen and Kwang-Cheng Chen and Symeon Papavassiliou},

year  = {2013},

date = {2013-01-01},

journal = {Journal of Complex Systems},

volume = {2013},

publisher = {Hindawi},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Niemann201328,

title = {Evaluating the energy efficiency of OLTP operations: A case study on PostgreSQL},

author = {R. Niemann and N. Korfiatis and R. Zicari and R. Göbel},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885725753&doi=10.1007%2f978-3-642-40511-2_3&partnerID=40&md5=37d7c26c533c028157ef1d8ecc11a4e0},

doi = {10.1007/978-3-642-40511-2_3},

year  = {2013},

date = {2013-01-01},

journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},

volume = {8127 LNCS},

pages = {28-43},

note = {cited By 3},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Wu20132069,

title = {You scratch someone's back and we'll scratch yours: Collective reciprocity in social Q&A communities},

author = {P. F. Wu and N. Korfiatis},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883851165&doi=10.1002%2fasi.22913&partnerID=40&md5=5bee4395f5becd00f153d0bd3d3a06c6},

doi = {10.1002/asi.22913},

year  = {2013},

date = {2013-01-01},

journal = {Journal of the American Society for Information Science and Technology},

volume = {64},

number = {10},

pages = {2069-2077},

note = {cited By 33},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Korfiatis20135507,

title = {Using online consumer reviews as a source for demographic recommendations: A case study using online travel reviews},

author = {N. Korfiatis and M. Poulos},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84877869306&doi=10.1016%2fj.eswa.2013.03.046&partnerID=40&md5=5ea51355fa48c961296bb716d022b56d},

doi = {10.1016/j.eswa.2013.03.046},

year  = {2013},

date = {2013-01-01},

journal = {Expert Systems with Applications},

volume = {40},

number = {14},

pages = {5507-5515},

note = {cited By 46},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Korfiatis2013225,

title = {Big Data for Enhanced Learning Analytics: A Case for Large-Scale Comparative Assessments},

author = {N. Korfiatis},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904692037&doi=10.1007%2f978-3-319-03437-9_23&partnerID=40&md5=69fc2ba2f779f7de48581dd6c101d944},

doi = {10.1007/978-3-319-03437-9_23},

year  = {2013},

date = {2013-01-01},

journal = {Communications in Computer and Information Science},

volume = {390 CCIS},

pages = {225-233},

note = {cited By 2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Arkoulis20131739,

title = {On the optimal, fair and channel-aware cognitive radio network reconfiguration},

author = {S. Arkoulis and E. Anifantis and V. Karyotis and S. Papavassiliou and N. Mitrou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878115702&doi=10.1016%2fj.comnet.2013.03.004&partnerID=40&md5=f0b5125bfb88b55dda37a775e106f7ff},

doi = {10.1016/j.comnet.2013.03.004},

issn = {13891286},

year  = {2013},

date = {2013-01-01},

journal = {Computer Networks},

volume = {57},

number = {8},

pages = {1739-1757},

abstract = {In this work, we focus on the Joint Channel Assignment and Routing (JCAR) problem in Cognitive Radio Networks (CRNs) and especially on the optimal reconfiguration of secondary networks under the presence of primary users. Secondary CRN users need to adapt their transmission channels promptly, while effectively limit additional or escalating system modifications triggered by the intertweaved primary user activity. Our approach takes into consideration the underlying spectrum switching dynamics and concurrently aims at a fair resource allocation among the active network flows. We take an optimization perspective and formulate the JCAR and network reconfiguration problems as mixed integer linear programs, addressing fairness concerns as well. We propose a heuristic approach which is based on a sequential reduced search space methodology, in order to obtain efficiently solutions of otherwise tough and demanding reconfiguration problems. The operation, effectiveness and performance of the proposed mechanisms are evaluated through analysis and simulations under various working conditions. The obtained numerical results indicate the benefits of the proposed schemes in terms of overhead performance and their scaling properties with respect to more realistic and thus demanding topologies. © 2013 Elsevier B.V. All rights reserved.},

note = {cited By 16},

keywords = {Channel assignment and routing; Channel switching; Cognitive radio network; Fairness; MILP; Network re-configuration; problem, Cognitive radio; Heuristic methods; Integer programming; Optimization; Radio systems, Network routing},

pubstate = {published},

tppubtype = {article}

}

@article{Yfantis2013157,

title = {The influential factors of M-government's adoption in the developing countries},

author = {V. Yfantis and K. Vassilopoulou and A. Pateli and A. Usoro},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883174585&doi=10.1007%2f978-3-642-40276-0_13&partnerID=40&md5=ebbe902a4b7e903f7d641c3de4002320},

doi = {10.1007/978-3-642-40276-0_13},

year  = {2013},

date = {2013-01-01},

journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},

volume = {8093 LNCS},

pages = {157-171},

note = {cited By 6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mikalef2013112,

title = {Why are users of social media inclined to Word-of-Mouth?},

author = {P. Mikalef and A. Pateli and M. Giannakos},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883006650&doi=10.1007%2f978-3-642-37437-1_10&partnerID=40&md5=a517ab1d0739ec67aae5c5bae743bcdb},

doi = {10.1007/978-3-642-37437-1_10},

year  = {2013},

date = {2013-01-01},

journal = {IFIP Advances in Information and Communication Technology},

volume = {399},

pages = {112-123},

note = {cited By 12},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mikalef201317,

title = {Shopping and word-of-mouth intentions on social media},

author = {P. Mikalef and M. Giannakos and A. Pateli},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876994256&doi=10.4067%2fS0718-18762013000100003&partnerID=40&md5=c893bdc4d6d5ee4fba9b7bb6ec905f21},

doi = {10.4067/S0718-18762013000100003},

year  = {2013},

date = {2013-01-01},

journal = {Journal of Theoretical and Applied Electronic Commerce Research},

volume = {8},

number = {1},

pages = {17-34},

note = {cited By 162},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{bardaki2012deploying,

title = {Deploying RFID-enabled services in the retail supply chain: Lessons learned toward the internet of things},

author = {Cleopatra Bardaki and Panos Kourouthanassis and Katerina Pramatari},

year  = {2012},

date = {2012-01-01},

journal = {Information Systems Management},

volume = {29},

number = {3},

pages = {233--245},

publisher = {Taylor & Francis Group},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{kourouthanassis2012introduction,

title = {Introduction to the special issue mobile commerce: the past, present, and future of mobile commerce research},

author = {Panos E Kourouthanassis and George M Giaglis},

year  = {2012},

date = {2012-01-01},

journal = {International journal of electronic commerce},

volume = {16},

number = {4},

pages = {5--18},

publisher = {Routledge},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{manolakos2012cross,

title = {A cross-layer-based topology control framework for wireless multihop networks},

author = {Alexandros Manolakos and Vasileios Karyotis and Symeon Papavassiliou},

year  = {2012},

date = {2012-01-01},

journal = {IEEE transactions on vehicular technology},

volume = {61},

number = {6},

pages = {2858--2864},

publisher = {IEEE},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kostagiolas2012108,

title = {Examining patterns of information behavior among healthcare professionals: A case study on health psychologists},

author = {P. A. Kostagiolas and F. Samioti and G. Alexias and N. Korfiatis and D. Niakas},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84868653593&doi=10.1080%2f13614576.2012.724300&partnerID=40&md5=15062f03aa4766bf5047ca68e46c2616},

doi = {10.1080/13614576.2012.724300},

year  = {2012},

date = {2012-01-01},

journal = {New Review of Information Networking},

volume = {17},

number = {2},

pages = {108-119},

note = {cited By 7},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kostagiolas2012317,

title = {A long-tail inspired measure to assess resource use in information services},

author = {P. A. Kostagiolas and N. Korfiatis and M. Poulos},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865558255&doi=10.1016%2fj.lisr.2012.05.002&partnerID=40&md5=6784490a415f65f1f764982e36932bba},

doi = {10.1016/j.lisr.2012.05.002},

year  = {2012},

date = {2012-01-01},

journal = {Library and Information Science Research},

volume = {34},

number = {4},

pages = {317-323},

note = {cited By 6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Korfiatis2012205,

title = {Evaluating content quality and helpfulness of online product reviews: The interplay of review helpfulness vs. review content},

author = {N. Korfiatis and E. García-Bariocanal and S. Sánchez-Alonso},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862904658&doi=10.1016%2fj.elerap.2011.10.003&partnerID=40&md5=0bb7ae388bdef2b7b5419768f871a457},

doi = {10.1016/j.elerap.2011.10.003},

year  = {2012},

date = {2012-01-01},

journal = {Electronic Commerce Research and Applications},

volume = {11},

number = {3},

pages = {205-217},

note = {cited By 430},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Poulos2012295,

title = {A methodology for binary encoding of citation metadata},

author = {M. Poulos and N. Korfiatis and G. Bokos},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84872808605&doi=10.1504%2fIJMSO.2012.051498&partnerID=40&md5=773fb37d3a48d04b1d0f9fd4c553d4b3},

doi = {10.1504/IJMSO.2012.051498},

year  = {2012},

date = {2012-01-01},

journal = {International Journal of Metadata, Semantics and Ontologies},

volume = {7},

number = {4},

pages = {295-301},

note = {cited By 0},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Manolakos20122858,

title = {A cross-layer-based topology control framework for wireless multihop networks},

author = {A. Manolakos and V. Karyotis and S. Papavassiliou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863934355&doi=10.1109%2fTVT.2012.2195340&partnerID=40&md5=bea0ce8fe0f4f424b10374cd64e99860},

doi = {10.1109/TVT.2012.2195340},

issn = {00189545},

year  = {2012},

date = {2012-01-01},

journal = {IEEE Transactions on Vehicular Technology},

volume = {61},

number = {6},

pages = {2858-2864},

abstract = {In this paper, we propose a distributed and asynchronous topology control framework for wireless multihop networks, aiming at improving the quality-of-service capabilities of such systems. The proposed mechanisms exploit cross-layer information such as physical-layer signal-to-interference-plus- noise ratio (SINR) values and medium-access-control (MAC)/network-layer connectivity to effectively allocate resources. Based on properly defined utility functions, we cast the transmission power allocation problem as a noncooperative game and then show that it belongs to the class of potential games. We obtain structural properties of the defined game and its variations and demonstrate their effectiveness. Through analysis and simulation, we explore the behavior of the proposed framework and compare it with the most relevant approach in the literature. It is shown that the proposed unifying game-theoretic framework achieves three key goals for multihop ad hoc networks, i.e., reduced transmission power, high-quality links, and connectivity maintenance. © 1967-2012 IEEE.},

note = {cited By 5},

keywords = {Fiber optic networks; Game theory; Quality of service; Signal interference; Spurious signal noise; Wireless networks, Telecommunication networks},

pubstate = {published},

tppubtype = {article}

}

@article{Stai20121344,

title = {Topology enhancements in wireless multihop networks: A top-down approach},

author = {E. Stai and V. Karyotis and S. Papavassiliou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84861741202&doi=10.1109%2fTPDS.2011.250&partnerID=40&md5=0254f54df82f0e88a0a260e40d8ab384},

doi = {10.1109/TPDS.2011.250},

issn = {10459219},

year  = {2012},

date = {2012-01-01},

journal = {IEEE Transactions on Parallel and Distributed Systems},

volume = {23},

number = {7},

pages = {1344-1357},

abstract = {Contemporary traffic demands call for efficient infrastructures capable of sustaining increasing volumes of social communications. In this work, we focus on improving the properties of wireless multihop networks with social features through network evolution. Specifically, we introduce a framework, based on inverse Topology Control (iTC), for distributively modifying the transmission radius of selected nodes, according to social paradigms. Distributed iTC mechanisms are proposed for exploiting evolutionary network churn in the form of edge/node modifications, without significantly impacting available resources. We employ continuum theory for analytically describing the proposed top-down approach of infusing social features in physical topologies. Through simulations, we demonstrate how these mechanisms achieve their goal of reducing the average path length, so as to make a wireless multihop network scale like a social one, while retaining its original multihop character. We study the impact of the proposed topology modifications on the operation and performance of the network with respect to the average throughput, delay, and energy consumption of the induced network. © 2012 IEEE.},

note = {cited By 16},

keywords = {Continuum mechanics; Energy utilization; Topology, Network evolution; Network science; Online social networks; Topology control; Wireless multi-hop network, Wireless networks},

pubstate = {published},

tppubtype = {article}

}

@article{Pateli2011127,

title = {Applying business process change (BPC) to implement multi-agency collaboration: The case of the Greek public administration},

author = {A. Pateli and S. Philippidou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955493483&doi=10.4067%2fS0718-18762011000100009&partnerID=40&md5=ef56eff680c3c72131f6dd0f712c1d75},

doi = {10.4067/S0718-18762011000100009},

year  = {2011},

date = {2011-01-01},

journal = {Journal of Theoretical and Applied Electronic Commerce Research},

volume = {6},

number = {1},

pages = {127-142},

note = {cited By 12},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pateli2011320,

title = {Strategic objectives affecting the structure of service innovation partnerships in technology- and knowledge-intensive sectors},

author = {A. Pateli},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857145777&doi=10.1504%2fIJWET.2011.043437&partnerID=40&md5=b7bcfb8435f72e208ac5250bb701051c},

doi = {10.1504/IJWET.2011.043437},

year  = {2011},

date = {2011-01-01},

journal = {International Journal of Web Engineering and Technology},

volume = {6},

number = {4},

pages = {320-334},

note = {cited By 0},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pateli201169,

title = {The choice of governance mode in ICT alliances: A property rights approach},

author = {A. Pateli and S. Lioukas},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79951578145&doi=10.1016%2fj.im.2011.01.002&partnerID=40&md5=151ccd8dc9623a4928cdeca01bfe8b0c},

doi = {10.1016/j.im.2011.01.002},

year  = {2011},

date = {2011-01-01},

journal = {Information and Management},

volume = {48},

number = {1},

pages = {69-77},

note = {cited By 6},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{bardaki2011modeling,

title = {Modeling the information completeness of object tracking systems},

author = {Cleopatra Bardaki and Panos Kourouthanassis and Katerina Pramatari},

year  = {2011},

date = {2011-01-01},

journal = {The Journal of Strategic Information Systems},

volume = {20},

number = {3},

pages = {268--282},

publisher = {North-Holland},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{stai2011topology,

title = {Topology enhancements in wireless multihop networks: A top-down approach},

author = {Eleni Stai and Vasileios Karyotis and Symeon Papavassiliou},

year  = {2011},

date = {2011-01-01},

journal = {IEEE Transactions on Parallel and Distributed Systems},

volume = {23},

number = {7},

pages = {1344--1357},

publisher = {IEEE},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{karyotis2011comparison,

title = {Comparison of efficient random walk strategies for wireless multi-hop networks},

author = {Vasileios Karyotis and Maria Fazio and Symeon Papavassiliou and Antonio Puliafito},

year  = {2011},

date = {2011-01-01},

journal = {Computer Communications},

volume = {34},

number = {10},

pages = {1258--1267},

publisher = {Elsevier},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{zamani2011exploring,

title = {Exploring the Adoption of ubiquitous information systems within the museum context},

author = {Efpraxia D Zamani and Panos E Kourouthanassis and Dimitrios C Karaiskos and George M Giaglis},

year  = {2011},

date = {2011-01-01},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{stai2011socially,

title = {A socially-driven topology improvement framework with applications in content distribution and trust management},

author = {Eleni Stai and Vasileios Karyotis and Symeon Papavassiliou},

year  = {2011},

date = {2011-01-01},

journal = {Journal of Internet Services and Applications},

volume = {2},

number = {2},

pages = {113--127},

publisher = {SpringerOpen},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{koutroumpis2011between,

title = {Between a rock and a hard place: Recession and telecoms taxation},

author = {P Koutroumpis and A Lekatsas and George Giaglis and P Kourouthanasis},

year  = {2011},

date = {2011-01-01},

journal = {Telecommunications Policy},

volume = {35},

number = {7},

pages = {681--688},

publisher = {Pergamon},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{lekakos2011kourouthanassisre,

title = {KourouthanassisRE-ENGINEERING CITIZEN-TO-PUBLIC PAYMENTS: A CASE STUDY OF THE GREEK CERTIFICATE OF PAYMENTS METHOD},

author = {Georgios Lekakos and Panos Kourouthanassis and Evangelia Mantzari},

year  = {2011},

date = {2011-01-01},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Poulos2011439,

title = {Towards text copyright detection using metadata in web applications},

author = {M. Poulos and N. Korfiatis and G. Bokos},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-80053339703&doi=10.1108%2f00330331111182111&partnerID=40&md5=7c7a97ac7ee533258965fc77c332b25d},

doi = {10.1108/00330331111182111},

year  = {2011},

date = {2011-01-01},

journal = {Program},

volume = {45},

number = {4},

pages = {439-451},

note = {cited By 1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Stai2011113,

title = {A socially-driven topology improvement framework with applications in content distribution and trust management},

author = {E. Stai and V. Karyotis and S. Papavassiliou},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84857595353&doi=10.1007%2fs13174-011-0024-0&partnerID=40&md5=81a4c8ac5441e15ef0402d39ccca4cbe},

doi = {10.1007/s13174-011-0024-0},

issn = {18674828},

year  = {2011},

date = {2011-01-01},

journal = {Journal of Internet Services and Applications},

volume = {2},

number = {2},

pages = {113-127},

abstract = {Contemporary networking infrastructures are required to be capable of adapting to the increasing trends of user demands, as well as the impairments of their operational environment. In this work, by exploiting the power varying capabilities of multihop wireless networks and inspired by social structures of the higher protocol layers, we develop a distributed and dynamic physical topology modification framework for weighted and directed multihop networks. The operational robustness and effectiveness of the proposed framework is demonstrated in two highly popular application areas, namely QoS-oriented content distribution and trust management in wireless multihop networks. We focus on the emerging trade-offs of topology modification, and through analysis and simulation, we demonstrate how social features can be used in improving the physical network topology and corresponding performance. © 2011 The Brazilian Computer Society.},

note = {cited By 3},

keywords = {Content distribution; Evolutionary modification; Small World Phenomenon; Topology control; Trust management; Wireless multihop networks, Electric network topology; Telecommunication networks; Topology, Network management},

pubstate = {published},

tppubtype = {article}

}

@article{Karyotis20111258,

title = {Comparison of efficient random walk strategies for wireless multi-hop networks},

author = {V. Karyotis and M. Fazio and S. Papavassiliou and A. Puliafito},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955708234&doi=10.1016%2fj.comcom.2011.01.001&partnerID=40&md5=06a7f2bacc2f23dd6cbd25c27205ee8b},

doi = {10.1016/j.comcom.2011.01.001},

issn = {01403664},

year  = {2011},

date = {2011-01-01},

journal = {Computer Communications},

volume = {34},

number = {10},

pages = {1258-1267},

abstract = {Wireless multi-hop networks have drawn great attention from research and business communities, since they suit well diverse application scenarios, such as environmental monitoring, military support in hostile environments and emergency applications. However, this challenging communication paradigm requires solutions able to fit specific requirements in terms of resource constrains, node mobility and quality of service. Random Walks (RWs) are probabilistic approaches to perform distributed operations, such as data search and retrieval. They are effective and have relatively small overhead compared to classic schemes, such as flooding. To further improve performance of RWs, hybrid solutions may be employed. Such strategies increase system performance at the cost of additional energy consumption. In this work, we propose two novel schemes that exploit local topological information in order to increase the hybrid RW protocols performance. Through simulations, we compare hybrid protocols with a traditional RW solution, studying their performance in static and mobile scenarios. An analysis of the trade-off between the number of node revisits and energy consumption allows to identify the more fitting protocols for different application scenarios in wireless multi-hop networks. Advantages and drawbacks of different RW strategies are highlighted, along with research challenges that need to be investigated in the future. © 2011 Elsevier B.V. All rights reserved.},

note = {cited By 4},

keywords = {Cover time; Energy consumption; Hybrid random walks; Multihop networks; Topology awareness, Energy utilization; Military applications; Quality of service; Random processes; Topology, Wireless networks},

pubstate = {published},

tppubtype = {article}

}

@article{bardaki2010exploring,

title = {Exploring the deployment and adoption of RFID-enabled retail promotions management},

author = {Cleopatra Bardaki and Panos Kourouthanassis and Katerina Pramatari},

year  = {2010},

date = {2010-01-01},

journal = {International Journal of RF Technologies},

volume = {2},

number = {2},

pages = {91--115},

publisher = {IOS Press},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{ringas2010urban,

title = {Urban Memory in Space and Time},

author = {Dimitrios Ringas and Eleni Christopoulou and Michail Stefanidakis},

year  = {2010},

date = {2010-01-01},

urldate = {2010-01-01},

journal = {Handbook of Research on Technologies and Cultural Heritage: Applications and Environments},

pages = {325},

publisher = {Information Science Publishing},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{bardaki2010modeling,

title = {Modeling The Information Quality Of Object Tracking Systems},

author = {Cleopatra Bardaki and Panos Kourouthanassis and Katerina Pramatari and Georgios I Doukidis},

year  = {2010},

date = {2010-01-01},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{karyotis2010analytic,

title = {Analytic stochastic propagation model for urban streets},

author = {VA Karyotis and CA Valagiannopoulos},

year  = {2010},

date = {2010-01-01},

journal = {IET microwaves, antennas & propagation},

volume = {4},

number = {1},

pages = {91--98},

publisher = {IET Digital Library},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{karyotis2010markov,

title = {Markov random fields for malware propagation: The case of chain networks},

author = {Vasileios Karyotis},

year  = {2010},

date = {2010-01-01},

journal = {IEEE communications letters},

volume = {14},

number = {9},

pages = {875--877},

publisher = {IEEE},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Poulos201057,

title = {Developing a diagnosis aiding ontology based on hysteroscopy image processing},

author = {M. Poulos and N. Korfiatis},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649628078&doi=10.1007%2f978-3-642-16552-8_6&partnerID=40&md5=1af92f7ac1b70b3224bbe2fe499c4dce},

doi = {10.1007/978-3-642-16552-8_6},

year  = {2010},

date = {2010-01-01},

journal = {Communications in Computer and Information Science},

volume = {108 CCIS},

pages = {57-62},

note = {cited By 1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Papavlasopoulos20102156,

title = {A non-linear index to evaluate a journal's scientific impact},

author = {S. Papavlasopoulos and M. Poulos and N. Korfiatis and G. Bokos},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77649336412&doi=10.1016%2fj.ins.2010.01.018&partnerID=40&md5=2ae91c8c3f7ba50ce85f3d3d0805c69f},

doi = {10.1016/j.ins.2010.01.018},

year  = {2010},

date = {2010-01-01},

journal = {Information Sciences},

volume = {180},

number = {11},

pages = {2156-2175},

note = {cited By 12},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Karyotis2010107,

title = {Topology-aware hybrid random walk protocols for wireless multihop networks},

author = {V. Karyotis and F. Pittalà and M. Fazio and S. Papavassiliou and A. Puliafito},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885893498&doi=10.1007%2f978-3-642-11817-3_10&partnerID=40&md5=90023c1d624d4f2bb70f6f595786f39c},

doi = {10.1007/978-3-642-11817-3_10},

issn = {18678211},

year  = {2010},

date = {2010-01-01},

journal = {Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering},

volume = {32 LNICST},

pages = {107-118},

address = {Athens},

abstract = {The proliferation of wireless multihop networks has made various operations, such as search and retrieval of distributed data a significant concern. Various methods have been proposed for performing such tasks efficiently, especially when all network nodes need to be visited at least once. Random walks are probabilistic approaches for performing the aforementioned operations effectively and with relatively small overhead compared to other typically-employed schemes, such as flooding. Recently, a hybrid random walk scheme has been proposed for increasing the desired performance, at the cost of additional consumed resources. In this work, we adopt the paradigm of hybrid random walk protocols and propose two novel hybrid schemes that exploit local topological information, aiming at further increasing the performance of random walk protocols in multihop networks. We consider different jump configurations of the hybrid random walk protocols and various degrees of mobility. Through analysis and simulation, the simple random walk model appears more appropriate for energy-constrained networks such as sensor networks, while the hybrid ones are more appealing for less energy-stringent, performance-oriented multihop networks, such as vehicular and mesh networks. The simple hybrid protocol occupies the middle ground, being appealing for ad hoc networks with medium to low node densities and average energy requirements. © 2010 ICST Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering.},

note = {cited By 2; Conference of 1st International Conference on Mobile Networks and Management, MONAMI 2009 ; Conference Date: 13 October 2009 Through 14 October 2009; Conference Code:86048},

keywords = {Computer simulation; MESH networking; Network management; Random processes; Sensor networks; Topology, Wireless networks},

pubstate = {published},

tppubtype = {article}

}