2nd Floor, Office 1, Department of Tourism Management, Koukouli, 26334, Patras (Google map link)
phone_ +30 2610962890
mail_ nikas@upatras.gr
url_ tourism.upatras.gr/nikas || google scholar || Scopus
office hours_ Mon 12.00-13.00 || Wed 13.00-15.00
The Tourism Information Systems and Forecasts Laboratory (TourISFlab) is operating at the Department of Tourism Management of University of Patras. TourISFlab mission is to provide specialized undergraduate and postgraduate education and serve research and develpment needs, as well as transfer and dissemination of knowledge and know-how, indicatively in the following areas: Study of time series with tourism data for decision-making, Development of tourism forecasting models, Visualization of Tourism Statistics, Study of carrying capacity in various regional level of Greece, Tourism Information Systems and world wide web, web page and smart devices apps evaluation, Tourism knowledge management systems. [TourISFlab website]
J1. I.A. Nikas, and T.N. Grapsa. Bounding the zeros of an interval equation, Applied Mathematics and Computation, 213(2), pp. 466–478, 2009.
[ScienceDirect ~ PrePrint]J2. E.N. Malihoutsaki, I.A. Nikas, and T.N. Grapsa. Improved Newton’s method without direct function evaluations, Journal of Computational and Applied Mathematics, 227(1), pp. 206–212, 2009.
[ScienceDirect ~ PrePrint]J3. C.D. Nikolakakou, T.N. Grapsa, I.A. Nikas, and G.S. Androulakis. A sequential approach for unconstrained optimization via a partitioning technique, International Journal of Computer Mathematics, 92(4), pp. 722-741, 2015.
[Taylor & Francis]J4. An. Panagopoulos, Al. Panagopoulos, I. Nikas, and T. Grapsa. A Comparative Study on Tourism Demand in Region Western Greece and its Contiguous Regions, Archives of Economic History, 27(2), pp. 19-35, 2015.
[Journal]J5. Al. Panagopoulos, S. Malefaki, I.A. Nikas. Forecasting The Tourism Demand Using Time-Series – A Case Study On The Prefectures Of Western Greece, "Tourism Research Institute", Journal of Tourism Research, 11(1), pp. 162-173, 2015.
[Preprint]J6. A. Koutras, A. Panagopoulos, and I. Nikas. Forecasting Tourism Demand Using Linear and Nonlinear Prediction Models, Academica Touristica, 9(1), pp. 85-98, 2016.
[Journal]J7. I. Poulaki and I.A. Nikas. Measuring tourist behavioral intentions after the first outbreak of COVID19 pandemic crisis. Prima facie evidence from the Greek market, International Journal of Tourism Cities, Vol. 7 No. 3, pp. 845-860, doi: 10.1108/IJTC-09-2020-0218, 2021
[Emerald Insight ~ In pdf]J8. M. Argyropoulou, E. Kandartzi, K. Stoforos, A. Panagopoulos, I. Nikas, and I. Poulaki (2021). The work of Lafcadio Hearn in education and culture: Lafcadio Hearn as an inspiration for educational actions. Culture: Journal in Tourism, Culture, Art and Education, Vol. 1 No. 3, pp. 116-132 (In Greek).
[In pdf]
B1. A. Koutras, A. Panagopoulos, I.A. Nikas. Evaluating the Performance of Linear and Nonlinear Models in Forecasting Tourist Occupancy in the Region ofWestern Greece, In: Katsoni V., Stratigea A. (eds) Tourism and Culture in the Age of Innovation. Springer Proceedings in Business and Economics. Springer, pp. 377-391, 2016.
B2. A. Koutras, A. Panagopoulos, I.A. Nikas. Predicting Tourism Demand In The Western Greece Region Using Independent Component Analysis, In: Katsoni V., Stratigea A. (eds) Tourism and Culture in the Age of Innovation. Springer Proceedings in Business and Economics, pp. 361-375, 2016.
B3. A. Koutras, I.A. Nikas, A. Panagopoulos. Towards Developing Smart Cities: Evidence from GIS Analysis on Tourists' Behavior Using Social Network Data in the City of Athens, In: Katsoni V., Segarra-Ora M. (eds) Smart Tourism as a Driver for Culture and Sustainability. Springer Proceedings in Business and Economics. Springer, Cham, pp. 407-418, 2019.
B4. I.A. Nikas, and I. Poulaki (2021). eSports Tourism: Sports Tourism in a Modern Tourism Environment. In: V. Katsoni,C. van Zyl (eds), Culture and Tourism in a Smart, Globalized, and Sustainable World. Springer Proceedings in Business and Economics. Springer, Cham. 2021 doi: 10.1007/978-3-030-72469-6_7
[Springer Link ~ Preprint]B5. A. Panagopoulos and I.A. Nikas. (2022). Smart Tourism: Opportunities and Perspectives. Contemporary Dimensions of the Tourism Phenomenon: Honorary Volume in memory of Pericles N. Lytras, A. Papageorgiou & K. Sergopoulos (eds.), pp.23-32, 2022, University of West Attica Publications (In Greek).
B6. Nikas I.A., Koutras A., A. Panagopoulos, and A. Vasileiadis (2022). Exploring Tourists’ Food and Beverage Spots in an Urban Destination Using a Spatial–temporal Approach. In: V. Katsoni, A.C. Şerban (eds), Transcending Borders in Tourism Through Innovation and Cultural Heritage. Springer Proceedings in Business and Economics. Springer, Cham. 2022 10.1007/978-3-030-92491-1_58
[Springer Link ~ Preprint]
C1. D.G. Sotiropoulos, J.A. Nikas, and T.N. Grapsa. Improving the Efficiency of a Polynomial System Solver via a Reordering Technique, Proceedings of 4th GRACM ”Congress on Computational Mechanics”, vol. 3, pages 970-977, 2002.
C2. I.A. Nikas, D.G. Sotiropoulos, and T.N. Grapsa. Extending Interval Newton Method for Nonlinear Parameterized Equations, Proceedings of ICNAAM 2006, International Conference of Numerical Analysis and Applied Mathematics, pages 512-515, 2006.
C3. E.N. Malihoutsaki, I.A. Nikas, and T.N. Grapsa. Improved Newton’s Method Without Direct Function Evaluations, Proceedings of Numan2007 ”Conference in Numerical Analysis”, pages 85-88, September 3-7, 2007.
C4. I.A. Nikas, and T.N. Grapsa. On Solving Efficiently Interval Polynomial Equations of Degree n, Proceedings of Numan2008 ”Conference in Numerical Analysis: Honoring Richard S. Varga on his 80th birthday”, pages 144-147, September 1-5, 2008.
C5. C.D. Nikolakakou, T.N. Grapsa, I.A. Nikas, and G.S. Androulakis. A Lexicographic Approach on Unconstrained Optimization, Proceedings of 23rd Conference on Operational Research (Euro XXIII 2009), page 90, July 05–08, 2009.
C6. I.A. Nikas, T.N. Grapsa, G.S. Androulakis. Global Optimization via Interval Equations, Proceedings of 23rd Conference on Operational Research (Euro XXIII 2009), page 249, July 05–08, 2009.
C7. I.A. Nikas, G.S. Androulakis, T.N. Grapsa. A Hybrid Branch-and-Bound Algorithm for Bound Constrained Optimization, Proceedings of Numan2010 ”Conference in Numerical Analysis, pages 202–207, Chania, September 15–18, 2010.
C8. I.A. Nikas, T.N. Grapsa. An escape-from-local minima technique in unconstrained, In Numan2012 ”5th Conference in Numerical Analysis”, page 34, Ioannina, September 5–8, 2012.
C9. I.A. Nikas. Efficient Unconstrained Optimization Multistart Solvers Using a Self-Clustering Technique, in Proceedings of Numan2014 ”Conference in Numerical Analysis”, pages 204-209, Chania, September 2-5, 2014.
C10. I.A. Nikas, A. Panagopoulos. A heuristic technique for selecting ARIMA models for forecasting tourism time series, In ICOT2015 ”5th International Conference on Tourism, pages 238-251, London, UK, June 24–27, 2015.
C11. G.S. Androulakis, I.A. Nikas, T.N. Grapsa, A. Panagopoulos, Tourism forecasting using backtracking optimization, In ”5th International Conference on Tourism & Hospitality Management”, pages 272-276, Athens, June 05–07, 2015.
C12. E.I. Nikolopoulou, I.A. Nikas, G.S. Androulakis. Redundant constraints identification in linear programming using statistics on constraints, In HELORS2017 ”6th International Symposium and 28th National Conference on Operational Research: OR IN THE DIGITAL ERA - ICT CHALLENGES”, pages 196-201, Thessaloniki, June 8–10, 2017.
C13. Ι. Nikas, I. Katsenos, and C. Androulakis (2018). Use of IRT Theory in the evaluation of basketball team players' performance, In 19th Conference of Sport and Recreation Management with International Participation, pp: 75-78, Patras, 16-18 November, 2018 (In Greek).
C14. Ι. Nikas, C. Karolidis and G. Androulakis (2018). Optimal combinations of players in a basketball team, In 19th Conference of Sports and Recreation Management with International Participation, pages: 79-82, Patras, 16-18 November, 2018 (In Greek).
C15. I.A. Nikas, T. Grapsa. Hybridization of bisection method for solving non-differentiable nonlinear equations, In 24th Pan-Hellenic Conference on Informatics (PCI 2020). Association for Computing Machinery, New York, NY, USA, 277-280. DOI: 10.1145/3437120.3437324.
C16. Ε. Kantartzi, M. Argyropoulou, A. Panagopoulos and G. Nikas (2020). The museum travels: a mobile exhibition with the help of high technology, 1st Panhellenic Conference 'Educational play in formal and non-formal learning', 14-15 November 2020. (In Greek).
C17. D. Maginas, I. Poulaki, A. Papaioannou, I. Nikas. An Evaluation of Customer Relationship Management through Social Media in Aegean Airlines, 4th International Conference of Development and Economy - Virtual - 01-03/12/2020.
C18. M. Argyropoulou, A. Panagopoulos, G. Nikas and I. Poulaki (2021). The concept of tourism sustainability in education: a digital opportunity, 6th Panhellenic Conference 'Education and Culture in the 21st century', 23-25 April 2021 (In Greek).
C19. A. Panagopoulos, I.A. Nikas. Evaluation of Urban Attractions Based on Primary and Secondary Points of Interest: The Case of Museums in the City of Athens, In 9th International Conference in "Tourism, Travel and Hospitality in a Smart and Sustainable World", Syros, September 1-3, 2022.
C20. I.A. Nikas, A. Koutras, and A. Panagopoulos. Dynamic Areas of Interest Inside an Urban Destination Using Visitors' Geolocation, In 9th International Conference in "Tourism, Travel and Hospitality in a Smart and Sustainable World", Syros, September 1-3, 2022.