2. Ερευνητικές - Επιστημονικές Δημοσιεύσεις του Ακαδημαϊκού Προσωπικού: Πρόσφατες υποβολές

  • Assessment of corporate governance via internal audit 
    Drogalas, George; Pantelidis, Panagiotis; Vouroutzidou, Rania; Kesisi, Evanthia (2011-08)
    Technological advancements have recently sharpened the ever'increasing attention on internal auditing. Simultaneously, corporate governance has received wide attention in recent years because of the major ...
  • Analyzing value co-creation in service systems: contribution from GORE 
    Fragidis, Garyfallos; Tarabanis, Konstantinos (2011-03)
    Service systems are characterized mostly by the co-creation of value in the interactions between service providers and customers. In this paper we examine the possibility to use GORE methodologies and techniques for the ...
  • Analysis of quantitative profiles of GI Education: towards an analytical basis for EduMapping 
    Rip, Frans; Grinias, Elias; Kotzinos, Dimitris (Springer Berlin HeidelbergBerlin, 2011)
    There is an ongoing discussion among the members of the GI educational community about the possibility to find a common way to describe a course taught as part of a GI curriculum (anywhere in the world) with the final goal ...
  • Affine transformation invariant image watermarking using moment normalization and radial symmetry transform 
    Nikolaidis, A. (2011-09)
    A novel technique for image watermarking aiming at robustness against geometrical attacks is proposed in the current paper. The first stage relies on computing a normalized version of the original image using image moments. ...
  • A study on the security, the performance and the penetration of wi-fi networks in a greek urban area 
    Mousionis, Savvas; Vakaloudis, Alex; Hilas, Constantinos (IFIP International Federation for Information ProcessingHeraklion, Crete, Greece, 2011)
    This paper presents a study on the expansion of urban Wi-Fi networks and the degree of users’ awareness about their characteristics. It involves an experiment contacted at the area of Serres, a Greek city of around 70,000 ...
  • GIS-based Visualisation of Traffic Noise 
    Konstantinidis, A.; Evangelidis, K.; Stefanidou, E. (2005)
    Among the environmental problems emerged in the majority of modern cities, noise pollution along with air pollution is considered to be the most important ones. Traffic noise is a priority issue in the EU. According to a ...
  • The Business Strategy Perspective on the Development of Decision Support Systems 
    Fragidis, G.; Tarabanis, K. (2005)
    This article examines the support that information systems may provide to the strategy process in business organisations. Being the process through which organizations make decisions for their future, strategy is very ...
  • User Profiling for Fraud Detection in Telecommunication Networks 
    Hilas, Constantinos S.; Sahalos, John N. (2005)
    Telecommunications fraud is increasing dramatically each year resulting in loss of a large amount of euros worldwide. A statistical machine learning method is presented that constructs user profiles for the detection ...
  • Service Quality Assessment in higher education: the case of Technological Educational Institute (T.E.I.) of Serres, Greece 
    Zafiropoulos, Costas; Frangidis, Garyfallos; Kehris, Evangelos; Dimitriadis, Sotirios G.; Paschaloudis, Dimiris (2005)
    Education service quality has become a major issue in higher education worldwide. In Greece it is beginning to gain attention in the last few years, mainly because it is an integral part of EU-funded programmes granted ...
  • Exploiting Concept Mapping in a Semantic Web Environment 
    Giouvanakis, Thanasis; Fragidis, Garyfallos; Kehris, Eyaggelos; Samaras, Haido (2005)
    Ontologies provide a formal representation of a conceptualization of a specific domain. This paper proposes an easy and natural way to create ontologies through concept mapping. We also present the well-grounded theoretical ...
  • Establishing effective Learning Management Systems through simplicity 
    Mastoras, Theodoros; Fotaris, Panagiotis; Politis, Anastasios; Manitsaris, Athanasios (2005)
    Designing a Learning Management System (LMS) is a combination of pedagogical design, usability and information architecture. E-Learning systems should have intuitive interfaces and clear information design, allowing ...
  • A Recurrent Neural Filter for Adaptive Noise Cancellation 
    Mastorocostas, Paris A.; Varsamis, Dimitris N.; Mastorocostas, Constantinos A.; Hilas, Constantinos S. (2006)
    This paper presents a dynamic neural filter for adaptive noise cancellation. The cancellation task is transformed to a system-identification problem, which is tackled by use of the Block-Diagonal Recurrent Neural Network. ...
  • A Recurrent Fuzzy Filter for Adaptive Noise Cancellation 
    Mastorocostas, P.; Varsamis, D. (2005-11)
    This paper presents a recurrent fuzzy-neural filter for adaptive noise cancellation. The cancellation task is transformed to a system-identification problem, which is tackled by use of the dynamic neuron-based fuzzy neural ...
  • Measuring content and usability of rural tourism lodgings websites’ 
    Zafiropoulos, Costas; Vrana, Vasiliki; Drogalas, Georgios (2006)
    Rural tourism is a significant source of income to rural economies but as a growth tool has to adapt to current market mechanisms, which are becoming competitive, and are dominated by communication and promotion ...
  • Implementation and Evaluation of TCP Enhancements over Satellite Links 
    Politis, A.; Manitsaris, A.; Mavridis, I. (2006)
    Internet over satellite is an emerging facet of communications enabling users to have access to the Internet over high speed satellite links. However, new requirements should be satisfied by the involved protocols in order ...
  • From Repositories of Best Practices to Networks of Best Practices 
    Fragidis, G.; Tarabanis, K. (2006)
    The paper refers to the development of online "networks of best practices" as mechanisms for the sharing of practical knowledge and the support of collaboration among business enterprises. The traditional approach in the ...
  • A methodology for developing component-based agent systems focusing on component quality 
    Eleftherakis, G.; Kefalas, P.; Kehris, E. (2011-09)
    Formal development of agent systems with inherent high complexity is not a trivial task, especially if a formal method used is not accompanied by an appropriate methodology. X-machines is a formal method that resembles ...
  • A digital loop filter for a Phase Locked Loop 
    Efstathiou, D. (2011-07)
    Modern digital telecommunication and audio systems include a Digital Phase Locked Loop (D-PLL) in a form of a device or an algorithm. Wireless infrastructure, broadband wire-line networks and high end audio systems require ...
  • A conventional form of dark energy 
    Kleidis, K.; Spyrou, N. K. (2011)
    Motivated by recent results, indicating that the dark matter (DM) constituents can be collisional, we assume that the DM itself possesses also some sort of thermodynamical properties. In this case, the Universe matter-content ...
  • Training stories in children's targeted commercials: does it work? 
    Lioutas, Evagelos D.; Tzimitra-Kalogianni, Irene; Folinas, Dimitrios; Handrinos, Michael C. (2012-06)
    The term " training story " is introduced in this paper to describe any short story with instructional aim. Recently, a growing number of television commercials of kids' foods uses training stories, relevant or not with ...