Browsing by Subject "Mobile telecommunication systems"

Now showing items 1-20 of 44

    • Article  

      Adaptive notch filter using real-time parameter estimation 

      Levin, J.; Pérez-Arancibia, N. O.; Ioannou, Petros A. (2011)
      The control of flexible systems is often difficult due to the exact frequencies of the elastic modes being hard to identify. These flexible modes may change over time, or vary between units of the same system. The variation ...
    • Book Chapter  

      Addressing device-based adaptation of services: A model driven web service oriented development approach 

      Achilleos, Achilleas P.; Yang, K.; Papadopoulos, George Angelos (IGI Global, 2014)
      The rapid growth of the mobile devices market and the increasing requirements of mobile users augment the need to develop Web Service clients that could be deployed and run on both mobile and desktop devices. Different ...
    • Article  

      Blocking reduction for distributed transaction processing within MANETs 

      Obermeier, S.; Böttcher, S.; Hett, M.; Chrysanthis, Panos K.; Samaras, George S. (2009)
      Atomic commit protocols for distributed transactions in mobile ad-hoc networks have to consider message delays and network failures. We consider ad-hoc network scenarios, in which participants hold embedded databases and ...
    • Article  

      A compact multiband monopole antenna with a defected ground plane 

      Antoniades, Marcos A.; Eleftheriades, G. V. (2008)
      A compact multiband antenna is proposed that consists of a printed circular disc monopole antenna with an L-shaped slot cut out of the ground, forming a defected ground plane. Analysis of the current distribution on the ...
    • Article  

      Crowdsourcing emergency data in non-operational cellular networks 

      Chatzimilioudis, Georgios; Costa, Constantinos; Zeinalipour-Yazdi, Constantinos D.; Lee, W. -C (2017)
      In overloaded or partially broken (i.e., non-operational) cellular networks, it is imperative to enable communication within the crowd to allow the management of emergency and crisis situations. To this end, a variety of ...
    • Conference Object  

      DermaTrack: A skin cancer tracking intelligent application 

      Mouzouras, N.; Pogiatzis, A.; Kleanthous, Styliani; Samaras, George S. (Association for Computing Machinery, 2017)
      Although, one in five humans living in high risk areas will develop skin cancer during a lifetime, there is currently no mechanism to help humans track the development of skin moles. DermaTrack, the application described ...
    • Conference Object  

      A discrete event based simulation environment for enhanced UMTS 3 rd generation networks 

      Antoniou, Josephina; Vassiliou, Vasos; Pitsillides, Andreas; Hadjipollas, George; Jacovides, N. (2004)
      This paper presents a new system level simulator that has been developed to evaluate E-UMTS (Enhanced Universal Mobile Telecommunication Systems) 3G Networks. The article describes how the simulator supports different ...
    • Article  

      Distributed adaptation reasoning for a mobility and adaptation enabling middleware 

      Paspallis, Nearchos; Papadopoulos, George Angelos (2006)
      The prospect of adaptive, mobile applications provides both opportunity and challenge to the application developers. Adaptive, mobile applications are designed to constantly adapt to the contextual conditions with the aim ...
    • Conference Object  

      Efficient online state tracking using sensor networks 

      Halkidi, Maria; Kalogeraki, Vana; Gunopulos, Dimitrios; Papadopoulos, Dimitris; Zeinalipour-Yazdi, Constantinos D.; Vlachos, Michail (2006)
      Sensor networks are being deployed for tracking events of interest in many environmental or monitoring applications. Because of their distributed nature of operation, a challenging issue is how to accurately identify the ...
    • Article  

      Enabling cross-platform mobile application development: A context-aware middleware 

      Achilleos, Achilleas P.; Kapitsaki, Georgia M. (2014)
      The emergence of mobile computing has changed the rules of web application development. Since context-awareness has become almost a necessity in mobile applications, web applications need to adapt to this new reality. A ...
    • Article  

      Enabling the deployment of mobile services for end-users: the SMS approach 

      Kapitsaki, Georgia M.; Kateros, D. A.; Pappas, C. (2013)
      Service provision in mobile environments is nowadays moving toward easiness and openness. The end-user’s role in this procedure can be supported through platforms that encourage user’s participation. This is critical toward ...
    • Conference Object  

      Enhanced UMTS cellular planning for multiple traffic classes in offices scenarios 

      Cabral, O.; Velez, F. J.; Hadjipollas, George; Stylianou, Marios; Antoniou, Josephina; Vassiliou, Vasos; Pitsillides, Andreas (2006)
      It is shown that Enhanced UMTS will be an affordable solution for providing the required network quality and to reduce infrastructure investments in offices scenarios. System capacity results are obtained by using a system ...
    • Conference Object  

      Enhanced UMTS cost/revenue optimisation in offices scenarios 

      Cabral, O.; Velez, F. J.; Hadjipollas, George; Stylianoi, M.; Antoniou, Josephina; Vassiliou, Vasos; Pitsillides, Andreas (2005)
      In this paper Enhanced UMTS offices scenarios and classes of services up to wideband are taken into account. A model is proposed for optimising Enhanced UMTS based in costs and revenues. A system level simulator is used ...
    • Conference Object  

      Enhanced UMTS simulation-based planning in office scenarios 

      Cabral, O.; Velez, F. J.; Hadjipollas, George; Stylianou, Marios; Antoniou, Josephina; Vassiliou, Vasos; Pitsillides, Andreas (Institute of Electrical and Electronics Engineers Inc., 2006)
      Enhanced UMTS traffic characterisation parameters have been addressed for the offices scenario. By using a system level simulator, results concerning QoS measures as packet delay, blocking and handover failure probabilities ...
    • Conference Object  

      Human Mobility Computing and Privacy: Fad or Reality? 

      Lee, A. J.; Pelechrinis, K.; Zeinalipour-Yazdi, Constantinos D. (Institute of Electrical and Electronics Engineers Inc., 2015)
      The advent of mobile computing and sensing technologies, in conjunction with omni-present and high-speed mobile networks, allow nowadays the capture of human mobility data at an extremely high fidelity. Modern mobile ...
    • Article  

      Intermediary infrastructures for the World Wide Web 

      Dikaiakos, Marios D. (2004)
      Intermediaries are software entities, deployed on hosts of the wireline and wireless network, that mediate the interaction between clients and servers of the World Wide Web. In this paper we present a survey of intermediaries, ...
    • Article  

      Key issues for the design and development of mobile commerce services and applications 

      Andreou, Andreas S.; Leonidou, Constantinos; Chrysostomou, Chrysostomos; Pitsillides, Andreas; Samaras, George S.; Schizas, Christos N.; Mavromoustakos, Stephanos M. (2005)
      This paper suggests a new approach for developing m-commerce services and applications based on a scheme that divides m-applications into directory- and transaction-oriented classes, identifies mobile user requirements, ...
    • Article  

      m-health e-emergency systems: Current status and future directions 

      Herscovici, N.; Christodoulou, Chris C.; Kyriacou, Efthyvoulos C.; Pattichis, Marios S.; Pattichis, Constantinos S.; Panayides, Andreas S.; Pitsillides, Andreas (2007)
      Rapid advances in wireless communications and networking technologies, linked with advances in computing and medical technologies, facilitate the development and offering of emerging mobile systems and services in the ...
    • Conference Object  

      An m-health system for continuous monitoring of children with suspected cardiac arrhythmias 

      Kyriacou, Efthyvoulos C.; Pattichis, Constantinos S.; Pattichis, Marios S.; Jossif, Antonis P.; Vogiatzis, Dimitrios G.; Paraskeva, Loucas; Konstantinides, A.; Kounoudes, A. (2008)
      In this study, we present a mobile health (m-Health) system that will be used for continuous monitoring of children with suspected cardiac arrhythmias. The system is able to do real-time acquisition and transmission of ECG ...
    • Conference Object  

      MBMS Handover Control for efficient multicasting in IP-based 3G mobile networks 

      Christophorou, C.; Pitsillides, Andreas (2006)
      Handover Control in a cellular infrastructure aims to provide continuity of mobile services to a user traveling over cell boundaries. So far, Handover Control is considered only between cells supporting the service using ...