A5048002166- Wireless Communication Networks Research
- Advanced Wireless Communication Techniques
- Adaptive Control of Nonlinear Systems
- Mobile Health and mHealth Applications
- Advanced Control Systems Optimization
- Control and Stability of Dynamical Systems
- IoT and Edge/Fog Computing
- Advanced MIMO Systems Optimization
- Wireless Signal Modulation Classification
- Multimedia Communication and Technology
- Green IT and Sustainability
- Fuel Cells and Related Materials
- Control Systems in Engineering
- Eosinophilic Esophagitis
- ATP Synthase and ATPases Research
- Cardiac Ischemia and Reperfusion
- Esophageal Cancer Research and Treatment
- Molecular Biology Techniques and Applications
- Consumer Behavior in Brand Consumption and Identification
- Cervical Cancer and HPV Research
- Security in Wireless Sensor Networks
- Robotic Mechanisms and Dynamics
- Advanced Wireless Network Optimization
- Medication Adherence and Compliance
- Culinary Culture and Tourism
National and Kapodistrian University of Athens
2023
National Technical University of Athens
2002-2022
University of Macedonia
2022
Aristotle University of Thessaloniki
2012
University of Rome Tor Vergata
2008
Imperial College London
2008
The problem of constructing globally convergent, reduced-order observers for general nonlinear systems is addressed. It shown that an asymptotic estimate the unknown states can be obtained by rendering attractive appropriately selected (invariant) manifold in extended state space. Current results on observer design require nonlinearities appearing system equations are either linear functions unmeasured or monotonic a combination states. In this paper we relax these two assumptions allowing...
Patients usually deviate from prescribed medication schedules and show reduced adherence. Even when the adherence is sufficient, there are conditions where schedule should be modified. Crucial drug-drug, food-drug, supplement-drug interactions can lead to treatment failure. We present development of an internet medical things (IoMT) platform improve enable remote modifications. Based on photos food supplements provided by patient, using a camera integrated portable 3D-printed low-power...
A constructive algorithm for designing an observer a class of nonlinear systems is presented. We follow the invariant manifold based approach which allows to shape dynamics estimation error. However, this shaping relies on solution PDE becomes difficult multi-output systems. In paper we remove restriction by adding reduced-order output filter and single dynamic scaling parameter. show that method can be applied with unknown parameters, leading new adaptive controllers. As application,...
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The present study aims to investigate the country-of-origin effect and branding process on brand equity of Greek yogurt abroad, specifically in United Kingdom. research was carried out as a 2 × experiment using closed-ended questionnaire with participation total 400 consumers, two yogurts (branded non-branded) product under study, or without insignia (viz. flag) packaging. According results, found be higher for branded among four categories, reflected its three sub-dimensions (brand...
Limited patients' medication adherence can lead to substantial health and economic implications. We propose a portable small sized pillbox, aiming improve during their indoor outdoor activities. Through web application, physicians make real-time adjustments patient's schedule which is, subsequently, saved in database on remote server. The pillbox establish secured communication with the server obtain updated schedule. Unlike available bulky devices used adherence, proposed offers improved...
The success of third-generation mobile communication systems, e.g., UMTS, will depend on the quality service (QoS) that users perceive, and whether QoS levels be provided in a cost efficient manner. In this perspective, importance tools for "proper" planning system becomes straightforward. context paper, we present such related to design future systems. addition, platform enables assessment derived solutions by means simulation.
Wireless communications are vulnerable against radio frequency (RF) jamming which might be caused either intentionally or unintentionally. A particular subset of wireless networks, vehicular ad-hoc networks (VANET) incorporate a series safety-critical applications, may potential target RF with detrimental safety effects. To ensure secure communication and defend it this type attacks, an accurate detection scheme must adopted. In paper we introduce that is based on supervised learning. The...
The success of third generation mobile communications systems, e.g., UMTS, will depend on the quality service (QoS) that users perceive, and whether QoS levels be provided in a cost efficient manner. In this perspective, importance tools for "proper" planning system becomes straightforward. An important phase overall process is verification. paper we present such practice relies development UMTS simulator provides means modelling networks, their environment. Our focus structure tool an...
An important issue in future cellular communication systems is the design of interconnecting network their access segment and best distribution systems' capacity order to provide predefined quality service (QoS). In this context following topic arises; find minimum-cost configuration cell site switches (CSSs) given base transceiver station (BTS) layout, that satisfy a set performance constraints (that derive from traffic mobility patterns system). extended version problem may also comprise...
It is envisaged that future cellular systems, e.g., UMTS, will consist of three network segments, namely, core, access, and intelligent. In the context this paper, we define solve some design problems related to access intelligent segments. addition, present a platform enables assessment derived solutions by means simulation. Our aim analyse, formally state, theoretically formulate these problems, provide for assessing efficiency problems.