Ubiquitous Learning Ubiquitous/Pervasive computing Ubiquitus computing Ubuntu LTSP Uefa European Championship Ui/Ux Ukrainian nationals, temporary protection, refugees, education, gender dicrimination Ukrainian refugees Ulcerative Colitis Ulcerative colitis, Crohn’s Disease, Quality of Life, Quality of Sleep, Inflammatory Bowel Disease Ultrasound Ultraviolet radiation Ulva Rigida Umberto Eco Umbrella Cells Umea 22 Umgedrehtes Klassenzimmer Umgedrehtes Klassenzimmer, Motivation, intrinsische Motivation, extrinsische Motivation, gehirngerecht bedingte Motivation, Blended Learning, digitale Medien, Gamifikation Unaccompanied Minors Unaccompanied Minors, Norway, Greece, Education, Culture, Instructor. Unaccompanied minors Unaccompanied minors refugee education Unaccompanied minors rights’ Unaided brand awareness Uncertain reasoning Uncertainty Uncertainty parameters Uncertainty propagation Uncontrolled disposal of waste, forests, woodlands, hazards, flammability Uncontrolled waste disposal Unconventional Building Materials Unconventional Monetary Policy Undeclared incomes Undergraduate courses Underground Economy Underground Railway Underground, υποκουλτούρα, underground λογοτεχνία, beat, Τέος Ρόμβος Understaning Undervaluation Underwater Archaeology Underwater Archaeology, Underwater Cultural Heritage, Underwater Archaeological Park, Sustainable development Underwater Archeology Underwater Cultural Heritage Unemployed Unemployment Unemployment index Unemployment rate Unempoyment Unesco Unesco, Intangible Cultural Heritage, Protection of the Intangible Cultural Heritage of Unesco, Unesco Convention, The lamentations of Mani, Unesco Catalog Entry Criteria Unesco, Άυλη Πολιτιστική κληρονομιά (ΑΠΚ), Προστασία της ΑΠΚ, Σύμβαση της Unesco, Μανιάτικα μοιρολόγια, Κριτήρια ένταξης στον Κατάλογο της Unesco Unesco, Πολιτιστική Κληρονομιά, Περιφερειακή Ανάπτυξη, Αρχαιολογικός Χώρος Φιλίππων Unexcused Absence Unfair Competition Unfair practices Unification Unified Modeling Language – UML Unified Social Security Agency EFKA. Unified Theory of Acceptance and Use of Technology- UTAUT Unified modeling language Unified software development process Uniform Manifold Approximation and Projection Uninsured Uninsured patient Union Uniqlo Unisystems, Unit Unit Root Test Unit for building waste management Unit for the treatment of demolitions and constructions wastes Unit root test United Arab Emirates United Arab of Emirates United Kingdom United Kingdom. United Kingdom/ Ηνωμένο Βασίλειο United Nations System Organizations United States Holocaust Memorial Museum Unity Unity - Game Engine Unity 3d Unity3 Unity3D Universal Desigh. Universal Design Universal Windows Platform Universal design, bioclimatic - environmental design , human, disability, right, acceptance, education, student, inclusion, environment. Universal health coverage Universe Universities University University Museums University buildings University of Ioannina University of Patras University of Piraeus University of Piraeus Library University of Thessaly University of Washington Quality of Life Questionnaire Unjustified School Absenteeism Unmaned Guided Vehicle Unmanned Aerial Vehicle Unmanned Aerial Vehicles Unmanned Aircraft System Unmanned Aircraft Systems Unmanned ships Μη επανδρωμένα πλοία Unmanned vehicles Unpublished traditional songs Unreal Engine Unreinforced stone masonry, quasi-static tests, plaster, 3D numerical model Unsolicited Proposals Unstructured play Unsupervised Learning Unsupervised Machine Learning Unterricht Unterricht an den griechischen öffentlichen Schulen Unterrichtsgestaltung Unterrichtsphasen Unterrichtsplanung Unterrichtsplanung και σχεδιασμός μαθήματος Unterrichtsszenarien Up reserve Updating Upgrade Upgrading Upper Primary Learners Uprising Urban Act - «Mural Art Projects» Urban Area Urban Center Urban Computing Urban Design Urban Distribution and Consolidation Centers Urban Environment Urban Freight Transport Urban Governance Urban Green Networks Urban Green Spaces Urban Heat Island Urban Inteligence Urban Landscape Urban Logistics Urban Microclimate Urban Mobility Urban Non-Profit Company Urban Non-Profit Company "The Angels of Joy", Culture, Communication, Communication Strategy, cultural communication, strategic communication, new technologies, attracting the public, raising public awareness, advertising, public participation, highlighting culture and strengthening the culture of cultural identity, corporate communication, communication marketing, traditional communication marketing, digital communication marketing, digital technology, social media, facebook, twitter, instagram, applications, marketing mix Urban Open Spaces Urban Planning Urban Policy Urban Public Transport Urban Public Transport (UPT) Urban Rail Transport SA (STASY SA) Urban Railways Urban Regeneration Urban Renaissance Urban Resilience Urban Revitalization Urban Revival Urban Solid Waste Urban Solid Waste Management Urban Solid Wastes Urban Sustainability Urban Transit Routing Problem Urban Voids Urban Waste Urban Waste Water Treatment Directive implementation Urban Waste, Waste Treatment, Natural Waste Treatment Systems, Decentralized Areas Urban Wastewater Treatment Urban area Urban area of Ioannina city Urban areas Urban civic uses Urban commons Urban design Urban development Urban environment Urban green Urban green areas Urban green networks Urban green spaces Urban micro space Urban microclimate Urban mobility Urban movements of open spaces Urban open space, museum, garden, regeneration. Urban planning Urban reconstructions Urban regeneration Urban regeneration projects Urban resilience Urban revival Urban revival and reuse Urban ruins Urban sociability Urban social movements Urban solid waste Urban solid waste, recycling, recycled materials, packaging materials, packaging waste, region of Central Makedonia Urban space Urban spaces’ network Urban streams Urban tourism Urban waste management, Circular economy, Smart bins, Smart PC application, Recycling, Internet of Things (IoT) Urban waste water Urban wastewater Urban wastewater treatment Urban wastewater, Industrial wastewater, Legislation, Greece, Abroad, Treatment processes, Re-use and recycle applications Urban wastewater, Urban wastewater treatment steps, Liquid waste, Reuse of liquid waste, Reclaimed water Urban water system UrbanDig Project Urbans Us - Them Usability Usability Evaluation Usability of cultural websites-Χρηστικότητα πολιτιστικών ιστοσελίδων Usability testing Use case Use case diagram Use case scenario Use of ICT in teaching Use of Social Media Use of art in Adult Education Use of health services Useful Daylight Illuminance Usefulness Usefulness of ICT Usefulness of feedback User Satisfaction User Behavior Analytics User Estimation User Experience User Generated Content User Interface User Interface Design User Perceptions of Mobile Banking User Questionnaire User Satisfaction User Views User behavior User evaluation User experience User generated content User interaction with the computer User modeling User satisfaction survey Users Users engagement Users of Outpatient Clinics Users' satisfaction Users’ Safety Uses and Gratifications/Θεωρία χρήσεων και ικανοποιήσεων Uses of Gratification Theory Usurer Utility Utility Function Utility function Utility functions Utility of mathematics Utilization Utilization Methods Utilization and reuse of waste Utilization methods Utilization of ICT Utilization of ML and Open Data Utilization of carbon dioxide Utopia Utopian Socialism Utopias V Μεραρχία V2V COMMUNICATIONS VACCINATION VACCP VALIDITY VALUATION VALUE VALUE AT RISK VAPT VAR VAR model VAR models VAR, VARIABLE SETS VARIATIONAL METHODS VAT, fraud, intra-community trade VATS, ανοικτή Θωρακοτοµή, κόστος, συνολικές ηµέρες νοσηλείας, όφελος. VC- DIMENSION VC- ΔΙΑΣΤΑΣΗ VECM VECTOR VECTOR ANALYSIS VECTOR CALCULUS VEGETATION VEHICLES VET VFI VHDL VIA-IS ψυχολογική αξιολόγηση VIA-IS VIBER VIBRATION VIDEO