- Hellenic Cartographic Society
- Commission on Mountain Cartography, International Cartographic Association
- Τεχνικό Επιμελητήριο Ελλάδος (Τ.Ε.Ε.)
- Panhellenic Association of Rural and Surveying Engineers
- Association of Civil Servants Engineers of Attica
- Supervising of laboratorial exercises in undergraduate and postgraduate Cartography lessons of S.R.S.G.E.-N.T.U.A.
- Researcher in projects of S.R.S.G.E.-N.T.U.A., related to Cartography and Geographic Information Systems
- Administrator of computer network and laboratorial equipment of Cartography Laboratory, S.R.S.G.E.-N.T.U.A.
- 2D/3D Topographic Relief Representation
- Methods of thematic spatial data representation
- Dynamic Maps & Virtual Tours
- Satellite maps
- Web maps
- Tzelepis N., Nakos B. «Analytical multi-directional hill-shading». A Journey in Earth's gravity field investigation. A honorary volume for Professor Emeritus Ilias Tziavos (Edited by: Vergos G.S., Grigoriadis V.N., Kotsakis H., Tsoulis D.). Aristotle University of Thessaloniki, Department of Agricultural and Surveying Engineering, Ziti Publications, 2026, pp. 473–491.
- Tzelepis N., “Multi-directional Analytical Hill-Shading for Enhanced Cartographic Relief Presentation”. Proceedings ofd EuroCarto 2024, Vienna, September 2024.
- Tzelepis N., Nakos B., “A methodology of Analytical Multi-directional Hill-Shading for Enhanced Representation of Topographic Relief in maps”. Proceedings of 16th National Cartographic Conference, Egaleo, November 2023 (in greek).
- Tzelepis N., Kaliakouda A., Krassanakis V., Misthos L.-M., Nakos B., "Evaluating the perceived visual complexity of multidirectional hill-shading", Geodesy and Cartography, 2020, 69 (2), pp. 161-172.
Contract
NTUA, Zographou Campus - 9, Heroon Polytechneiou, 15780 Athens
School of Rural, Surveying & GeoInformatics Engineering, A Building, 2nd floor, Α204
Tel. +30-210 7722772, e-mail: niktzel@survey.ntua.gr