training’s topics trait anxiety trait emotional intelligence traits transaction security transactional distance transactional leadership transactions transactions with the State transcription transcription / transposition / adaptation transfer transfer learning transfer of antiquities transfert transformable architecture, kinetic systems, dynamic building skins, climate-responsive envelopes transformation transformation of teaching practices transformation, educational institution, Primary school Education, leadership, teachers transformational leader transformational leadership transformational leadership style transformational teacher transformative leadership transformative learning transforming learning transfusion transient stress transition transition risks transition to democracy translanguaging translanguaging / διαγλωσσικότητα translanguaging approach και προσέγγιση της διαγλωσσικότητας translanguaging practices translanguaging, multilingualism, self-organized class, refugee and migrant education, community building translanguaging, translanguaging practices, mediation, teacher training courses, use of L1, distance learning, e-course, professional development translation translation, poem, modernist, T.S. Eliot, The Waste Land, George Seferis, Erimi Hora, Haris Vlavianos, Agoni Gi. transmedia storytelling transmediality transmission transmission channels transmission conditions transmittance transparency transplant transporition transport in EU-28 transport infrastructure and υποδομές μεταφορών transport oriented development transportation sector transports transposition trash trauma traumatic experiences traumatic memory traumatic past travel travel behaviour travel blogs/vlogs, τουριστικός προορισμός, αντίληψη ταξιδιώτη, ταξιδιωτική απόφαση, αξιοπιστία πληροφοριών travel experience travel planning travel tourism ,business travel, corporate travel,covid 10 travel writing, literary reportage, travel blogging, late capitalism, financialisation travelers travelling wave treatment treatment of diabetes treatment of healthcare waste treatment satisfaction tree inventory tree structure trend analysis trend-following triage triangulation trilateration triple exploitation troubles d'apprentissage trough truancy truly media trust truth, person, spirit, Marxism, communism, Christianity tsakonian dialect tsunami ttechnics tumor growth model tunable white tunnel tunnel with vertical openings turbulent times turnover turnover intention tutor-counselor tutor-learner communication tutor-mentor tutorials tutors’ characteristics tweets twist two-dimensional content two-state quantum systems two-year compulsory pre-school education type 1 diabetes type 1 diabetes mellitus type d'apprenants, visuel, auditif, kinesthésique, chanson, documents sonores, vidéo-clip, mémorisation, conception enfantine, école primaire type of customer / τύπος πελάτη type of in-service training types types of conflicts types of electronic banking typescript typha latifolia typical education typical residence typography typologie des textes /τυπολογία κειμένων typology tâche tâche collaborative tâches tâches de vie réelle, interaction, production écrite, web social, réseaux sociaux u-boot uav ubicomp ubiquitous computing ubiquitous e-memories ukraine crisis ultra - violet radiation ultrafiltration membranes ultraviolet photography umgedrehtes Klassenzimmer - ανεστραμμένη τάξη umi unaccompanied minors unaccompanied minors, asylum, Greece, legal framework, human rights unaccompanied refugee minor unaccompanied refugee minor, legal framework, malpractices, positive practices uncanny uncertain environment uncertainty uncertainty of measurement unconscious learning unconventional cinema unconventionality undeclared undeclared work, unpaid work, insurance risks, self-management, public and compulsory insurance, voluntary work, contribution evasion, control mechanisms, dependent employment, social insurance, Social and Solidarity Economy, welfare state under-representation undereducation underground mining project understanting unemployment unemployment, unforeseen unification unification of archaeological sites uniform illumination uninsured unintended pregnancy uniqueness unit root unity unité didactique universal design universality of the Church universelle universities university education unpaid domestic work unreal engine unstructured/free play unwanted pregnancy upgrade upgrading uploaded content upper and lower semi-continuity upper secondary school learners upper secondary schools upskilling upward and downward site-specific activities και Ανάντι και κατάντι δραστηριότητες τοποθεσίας urban urban air pollution urban and industrial areas of Western Macedonia urban and insular regions urban centres urban complex of Patras urban design urban developement urban development urban enviroment urban environment urban environmental planning urban field urban forestry urban green urban green networks urban green space network urban heat island, temperature, intensity, structure urban identity urban landscape urban lighting urban microclimate urban mobility urban modifications urban network road lighting urban open spaces urban park urban planning urban policy urban regeneration urban renewal urban representations urban resilience urban revival /spatial improvement, urban sea fronts urban sludge treatment, wastewater treatment, anaerobic digestion, biogas urban solid waste, qualitative and quantitative features, management, ΜΒΤ plants urban space urban strategic planning urban streams urban thermal island urban tourism urban transport urban voids urban waterfront urban web urbanization usability usability assessment usability evaluation usage scenarios use use and exploitation of ICT use and utilization of ICT use case diagrams use of ICT use of L1 use of art use of healthcare services use of mother tongue used tires in concrete useful criterion usefulness and integration of ICT user analysis user behavior user experience user experience design user generated content user interface user location user satisfaction user-centered design user-generated content users users' preferences users’ satisfaction utilitarian motivation utility cut utility theory utilization utilization and distribution of material utopia uv φίλτρα,οργανικά φίλτρα,ανόργανα φίλτρα,τεχνικές ανάλυσης,καλλυντικά προϊόντα,φωτοσταθερότητα vacation vacation house vaccination vaccination behavior vaccination coverage vaccination coverage, vaccination, vaccination controversy vaccination general population vaccination hesitancy vaccination misinformation vaccination of the elderly vaccination, vaccines, anti-vaccination movement, National Vaccination Programme, COVID-19 vaccine effectiveness vaccine safety vaccine-acceptance vaccine-hesitancy vaccines vaccines – vaccinations vacuum insulation panels vacuum polarization validation validation of informal learning validation of qualifications validity valorization valuation valuation methods value value at risk value proposition value stream mapping values & attitudes valuε- Aξία van der Pol vandalism variability