Curriculum Vitae

Nikolaos Tsitsas

Associate Professor, School of Informatics

Personal Information

- 2310991866
ntsitsas@csd.auth.gr
http://mlab.csd.auth.gr/ntsitsas/
Scopus ID6505782425
Google Scholar IDE2Jk3JQAAAAJ
Researcher IDQ-3191-2017
MathSciNet ID779168
Γνωστικό Αντικείμενο:
ΕΦΑΡΜΟΣΜΕΝΗ ΜΑΘΗΜΑΤΙΚΗ ΑΝΑΛΥΣΗ
Επιστημονική Ειδίκευση:
- Θετικές επιστήμες, Μαθηματικά και Πληροφορική
- Μαθηματικά

Education

Προπτυχιακές Σπουδές

2002	ΔΙΠΛΩΜΑ ΗΛΕΚΤΡΟΛΟΓΩΝ ΜΗΧΑΝΙΚΩΝ ΚΑΙ ΜΗΧΑΝΙΚΩΝ ΥΠΟΛΟΓΙΣΤΩΝ ΕΜΠ Greece

Μεταπτυχιακές Σπουδές

2005	ΜΔΕ ΜΑΘΗΜΑΤΙΚΩΝ ΕΚΠΑ Greece ΕΦΑΡΜΟΣΜΕΝΑ ΜΑΘΗΜΑΤΙΚΑ

Διδακτορικό Δίπλωμα

2006	ΔΔ ΗΛΕΚΤΡΟΛΟΓΩΝ ΜΗΧΑΝΙΚΩΝ ΚΑΙ ΜΗΧΑΝΙΚΩΝ ΥΠΟΛΟΓΙΣΤΩΝ ΕΜΠ Greece

Course Work

Courses of Winter semester of 2020–21 academic year

	TMĪMA PLĪROFORIKĪS
NCO-01-01	MATHEMATICAL ANALYSIS I
NCO-03-01	APPLIED MATHEMATICS

Courses of Spring semester of 2020–21 academic year

	TMĪMA PLĪROFORIKĪS
NCO-02-01	MATHEMATICAL ANALYSIS II
NGE-06-01	MATHEMATICAL MODELING
NGE-06-02	OPTIMIZATION

	PMS "DIADRASTIKES TECΗNOLOGIES YLIKOU KAI LOGISMIKOU"
IHST202	Optimization Techniques

Theses Supervised

Student Theses within AUTh

In progress

Doctoral

Μαθηματικές μέθοδοι κυματικής διάδοσης
Μαθηματικές μέθοδοι κυματικής διάδοσης
Σύγχρονη και εξελικτική βελτισοποίηση στην σχεδίαση και επαλήθευση κυβερνοφυσικών συστημάτων
Αλγόριθμοι αντίστροφης σκέδασης κοντινού πεδίου και εφαρμογές

2020–2021

Undergraduate

Αλγόριθμοι Πολυκριτηριακής Βελτιστοποίησης
Τεχνικές πρόβλεψης του χρόνου διάχυσης πληροφορίας σε κοινωνικά δίκτυα
Αλγόριθμοι Βελτιστοποίησης για Προβλήματα Ακέραιου Προγραμματισμού

2019–2020

Postgraduate

Βελτιστοποίηση λειτουργίας μικροηλεκτρονικών κυκλωμάτων με χρήση γενετικών αλγορίθμων
Εκτίμηση της διάχυσης πληροφορίας σε κοινωνικά δίκτυα
Επαλήθευση συστημάτων με φραγματικά πιστοποιητικά

Doctoral

Μαθηματικές μοντελοποιήσεις προβλημάτων κυματικής διάδοσης σε μη γραμμικά ηλεκτρομαγνητικά μεταϋλικά

Undergraduate

Προχωρημένοι Αλγόριθμοι Προβλημάτων Μη Γραμμικής Βελτιστοποίησης με Περιορισμούς
Εξελικτική Βελτιστοποίηση:Εφαρμογή και Σύγκριση Αλγορίθμων Προσομοίωσης Κοινωνικών Αραχνών
Αλγόριθμοι βελτιστοποίησης για το πρόβλημα κοπής αποθεμάτων
Μοντελοποίηση και επίλυση προβλημάτων βελτιστοποίησης με Pyomo
Νοημοσύνη Σμήνους:Εφαρμογή και Σύγκριση Αλγορίθμων Αγέλης σε Προβλήματα Βελτιστοποίησης
Μελέτη Αλγορίθμων Βελτιστοποίησης και Εφαρμογή σε Προβλήματα Σχεδίασης Ηλεκτρονικών Κυκλωμάτων

2018–2019

Postgraduate

Γραφικά υπολογιστών και η τεχνική του screen space ambient occlusion

Undergraduate

ΜΑΘΗΜΑΤΙΚΕΣ ΜΟΝΤΕΛΟΠΟΙΗΣΕΙΣ ΠΡΟΣΑΡΜΟΓΗΣ ΚΑΜΠΥΛΩΝ ΤΗΣ ΧΡΟΝΙΚΗΣ ΕΞΕΛΙΞΗΣ ΔΕΔΟΜΕΝΩΝ RETWEETS
ΑΛΓΟΡΙΘΜΟΙ ΕΞΕΛΙΚΤΙΚΗΣ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗΣ ΚΑΙ ΕΦΑΡΜΟΓΕΣ
ΑΝΤΙΚΕΙΜΕΝΟ ΣΤΡΑΦΗΣ ΕΦΑΡΜΟΓΗ ΓΙΑ ΑΔΕΣΜΕΥΤΗ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗ ΜΗ ΓΡΑΜΜΙΚΩΝ ΣΥΝΑΡΤΗΣΕΩΝ

Doctoral

Αναλυτικοί αλγόριθμοι προβλημάτων συνοριακών τιμών κυματικής σκέδασης από σημειακές πηγές

2017–2018

Postgraduate

Ανάλυση τεχνικών συνεχούς βελτιστοποίησης και εφαρμογές σε προβλήματα ηλεκτρομαγνητικής απόκρυψης αντικειμένων

2016–2017

Undergraduate

ΜΑΘΗΜΑΤΙΚΗ ΑΝΑΛΥΣΗ ΤΕΧΝΙΚΩΝ ΚΑΤΗΓΟΡΙΟΠΟΙΗΣΗΣ ΔΕΔΟΜΕΝΩΝ ΜΕ ΧΡΗΣΗ ΜΗΧΑΝΩΝ ΔΙΑΝΥΣΜΑΤΩΝ ΥΠΟΣΤΗΡΙΞΗΣ.
Αλγοριθμική Μουσική Σύνθεση: Ιάννης Ξενάκης - Αχορρίψεις και ST/10-1,080262.

Postgraduate

Dynamic Service Broker Routing Policy in Cloud Computing Using Vector Space Model Δυναμικές υπηρεσίες πολιτκών δρομολόγησης σε υπολογιστικά νέφη με χρήση μοντέλων διανυσματικών χώρων

2015–2016

Undergraduate

ΠΡΟΒΛΗΜΑΤΑ ΑΡΧΙΚΩΝ ΤΙΜΩΝ ΣΥΝΗΘΩΝ ΔΙΑΦΟΡΙΚΩΝ ΕΞΙΣΩΣΕΩΝ, ΜΟΝΤΕΛΟΠΟΙΗΣΕΙΣ ΚΑΙ ΥΛΟΠΟΙΗΣΕΙΣ ΜΕ MATHEMATICA

Research Projects

Coordinator
2020–2021	Μοντελοποίηση της εν τω βάθει εγκεφαλικής διέγερσης μέσω ακριβών ηλεκτροδυναμικών τεχνικών
2013–2014	ΔΡΑΣΗ Β: Ενίσχυση νέων ερευνητών στη βαθμίδα του επίκουρου καθηγητή:Μαθηματική Ανάλυση Εφαρμογών Κυματικής Σκέδασης από Σύνθετα Μέσα

Participant
2019–2020	Αμοιβες Μελών ΔΕΠ- Παροχή Υπηρεσιών Αξιολόγησης της ΕΥΔ ΕΠ ΑΝΑΔ-ΕΔΒΜ
2006–-0001	Πληρωμή μελών ΔΕΠ απο ΕΜΠ (ΕΘΝΙΚΟ ΜΕΤΣΟΒΕΙΟ ΠΟΛΥΤΕΧΝΕΙΟ)

Publications

(2021)

Journal Article

Eremin Yuri A, Fikioris George, Tsitsas Nikolaos, Wriedt Thomas (2021). A new method of internal auxiliary source-sinks (MIASS) for two-dimensional interior Dirichlet acoustic problems. Journal of Computational and Applied Mathematics. vol.386 no.C p.113231.
Kouroublakis Minas, Tsitsas Nikolaos, Fikioris George (2021). Mode Analysis by the Method of Auxiliary Sources With an Excitation Source. IEEE Transactions on Microwave Theory and Techniques.
Kouroublakis Minas, Tsitsas Nikolaos, Fikioris George (2021). Convergence Analysis of the Currents and Fields Involved in the Method of Auxiliary Sources Applied to Scattering by PEC Cylinders. IEEE Transactions on Electromagnetic Compatibility.

(2019)

Journal Article

Porfyrakis Polykarpos, Tsitsas Nikolaos, Frantzeskakis Dimitri J (2019). On the formation of gap solitons in nonlinear electromagnetic metamaterials. Mathematical Methods in the Applied Sciences.
Porfyrakis Polykarpos, Tsitsas Nikolaos (2019). Nonlinear electromagnetic metamaterials: Aspects on mathematical modeling and physical phenomena. Microelectronic Engineering. vol.216.
Tsitsas Nikolaos, Valagiannopoulos Constantinos, Nosich Alexander I (2019). Excitation of Guided Waves on a Lossless Dielectric Slab by an E-polarized Complex-Source-Point Beam. IEEE Transactions on Antennas and Propagation.

(2018)

Journal Article

Prokopiou P, Tsitsas Nikolaos (2018). Direct and inverse low-frequency acoustic excitation of a layered sphere by an arbitrarily positioned point source. Mathematical Methods in the Applied Sciences. vol.41 no.3 p.1040-1046.
Tsitsas Nikolaos, Zouros Grigorios P, Fikioris George, Leviatan Yehuda (2018). On Methods Employing Auxiliary Sources for 2-D Electromagnetic Scattering by Noncircular Shapes. IEEE Transactions on Antennas and Propagation. vol.66 no.10 p.5443 - 5452.
Tsitsas Nikolaos, Porfyrakis P, Frantzeskakis D (2018). Modeling of ultrashort pulse propagation in lossy nonlinear metamaterials. Mathematical Methods in the Applied Sciences. vol.41 no.3 p.952-958.

Book Chapter

Fikioris George , Tsitsas Nikolaos (2018). The Generalized Multipole Technique for Light Scattering. The Generalized Multipole Technique for Light Scattering. Επιμέλεια:Thomas Wriedt, Yuri Eremin. Springer, Cham. τομ.99 p.93-119.

Conference Proceedings Article

Porfyrakis P, Tsitsas Nikolaos, Frantzeskakis DJ (2018). Gap Solitons in Double-Lorentz Nonlinear Metamaterials. 2018 12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials). Espoo - Finland. IEEE. p.398-400.
Tsitsas Nikolaos, Valagiannopoulos CA (2018). Achieving Anomalous Refraction with Metasurfaces Composed by Two Ordinary Dielectric Materials. 2018 12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials). Espoo - Finland. IEEE. p.395-397.
Tsitsas Nikolaos (2018). An Entire-Domain Galerkin Method for the Analysis of Wave Scattering by All-Dielectric Metasurfaces. 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET). Kyiv - Ukraine. IEEE. p.47-50.
Tsitsas Nikolaos (2018). Fourier-Transform-Domain Solution of the Directive Beam Scattering by a Dielectric Slab with Account of the Guided Waves. 2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC). Gran Canaria - Spain. IEEE. p.1-4.
Tsitsoglou Zoi, Prokopiou Prokopios, Tsitsas Nikolaos (2018). Dipole-Scattering by Spherical Media and Related Optimization Problems. 2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC). Gran Canaria - Spain. IEEE. p.1-4.

(2017)

Journal Article

Papadimopoulos A, Kantartzis Nikolaos, Tsitsas Nikolaos, Valagiannopoulos C (2017). Wide-angle absorption of visible light from simple bilayers. Applied Optics. vol.56 no.35 p. 9779-9786.
Tsitsas Nikolaos (2017). Efficient integral equation modeling of scattering by a gradient dielectric metasurface. EPJ Applied Metamaterials. vol.4 p.3.
Tsitsas Nikolaos, Valagiannopoulos C (2017). Anomalous reflection of visible light by all-dielectric gradient metasurfaces. Journal of the Optical Society of America - B. vol.34 no.7 p.D1-D8.
Tsitsas Nikolaos, Mittra R (2017). Analysis of truncated gratings and a novel technique for extrapolating their characteristics to those of infinite gratings. Applied Computational Electromagnetics Society Journal. vol.32 no.6 p.463-472.
Valagiannopoulos C, Tsitsas Nikolaos, Lakhtakia A (2017). Giant enhancement of the controllable in-plane anisotropy of biased isotropic noncentrosymmetric materials with epsilon-negative multilayers. Journal of Applied Physics. vol.121 no.6.

Conference Proceedings Article

Prokopiou P, Tsitsas Nikolaos (2017). Low-Frequency scattering of a spherical wave due to an arbitrary dipole by a sphere. Proceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017. Verona, Italy. p.956-959.
Prokopiou P, Tsitsas Nikolaos (2017). Low-frequency inverse-source algorithms for spherical media. 2017 22nd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory. Dnipro, Ukraine. p.20-24.
Tsitsas Nikolaos, Zouros G, Fikioris G, Leviatan Y (2017). On methods employing auxiliary sources for non-circular scattering problems. 2017 Computing and Electromagnetics International Workshop (CEM). Barcelona, Spain. p.45-46.
Tsitsas Nikolaos, Valagiannopoulos C (2017). Mitigating Snell's-Law reflection and transmission with metasurfaces of ordinary dielectrics. Proceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017. Verona, Italy. p.1160-1163.

(2016)

Journal Article

Papadimopoulos Athanasios, Tsitsas Nikolaos, Valagiannopoulos Constantinos, Kantartzis Nikolaos, Antonopoulos Christos, Tsiboukis Theodoros (2016). Consistent Integral Equation Modeling of Cloaking Planar Microstrip Antennas. IEEE Transactions on Magnetics. vol.52 no.3.
Valagiannopoulos C, Tsitsas Nikolaos, Sihvola A (2016). 'Unlocking' the Ground: Increasing the Detectability of Buried Objects by Depositing Passive Superstrates. IEEE Transactions on Geoscience & Remote Sensing. vol.54 no.6 p.3697-3706.

Conference Proceedings Article

Tsitsas Nikolaos (2016). Complex source point beam excitation of a lossless dielectric slab. 2016 IEEE International Conference on Mathematical Methods in Electromagnetic Theory (MMET). Lviv, Ukraine. vol.2016-August p.345-348.
Tsitsas Nikolaos, Palaiopanos G, Fikioris G (2016). Convergence of fictitious sources methods applied to three-dimensional scattering problems. URSI International Symposium on Electromagnetic Theory (EMTS, 2016). Espoo, Finland. p.243-246.
Tsitsas Nikolaos, Pelletti C, Mittra R (2016). Efficient analysis of scattering by strip gratings. Radio Science Meeting, 2016, USNC-URSI. Fajardo, Puerto Rico. p.61-62.
Tsitsas Nikolaos (2016). Efficient integral equation analysis of scattering by a metamaterial grating assisted slab. 2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS). Chania, Greece. p.370-372.
Valagiannopoulos C, Tsitsas Nikolaos, Sihvola A (2016). Analytical investigations of ground modifications assisting the detection of a buried object. 2016 URSI International Symposium on Electromagnetic Theory (EMTS). Espoo, Finland. p.783-786.

(2015)

Journal Article

Fikioris G, Tsitsas Nikolaos (2015). On convergence and inherent oscillations within computational methods employing fictitious sources. Computers & Mathematics with Applications. vol.69 no.7 p.636-649.
Valagiannopoulos C. A, Tsitsas Nikolaos, Lakhtakia A, Burger A (2015). Pockels cover for switchable control of the reflection from a grounded, isotropic, lossy dielectric slab. Journal of Applied Physics. vol.117 no.8 p.083105.

(2013)

Journal Article

Fikioris G, Tsitsas Nikolaos, Charitos G. K (2013). Spurious Oscillations in a Combined Method-of-Auxiliary-Sources/Extended-Integral-Equation Solution to a Simple Scattering Problem. Journal of Quantitative Spectroscopy and Radiative Transfer.
Tsitsas Nikolaos (2013). A low-frequency electromagnetic near-field inverse problem for a spherical scatterer. Journal of Computational Mathematics. vol.31 no.5 p.439-448.

Conference Proceedings Article

Tsitsas Nikolaos, Martin P. A (2013). Analytical Algorithms for the Inverse Source Problem in a Sphere. Proceedings, 11th International Conference on Mathematical and Numerical Aspects of Waves (WAVES 2013). Tunis, Tunisia. p.173-174.
Valagiannopoulos C.A, Tsitsas Nikolaos (2013). Concealing a Perfectly Conducting Object with Edges inside a Dielectric Superstrate. International Conference on Electromagnetics in Advanced Applications (ICEAA' 2013). Torino - Italy.

(2012)

Journal Article

Mittra R, Pelletti C, Tsitsas Nikolaos, Bianconi G (2012). A New Technique for Efficient and Accurate Analysis of FSSs, EBGs and Metamaterials. Microwave and Optical Technology Letters. vol.54 no.4 p. 1108–1116.
Shen Y, Whitaker N, Kevrekidis P. G, Tsitsas N. L, Frantzeskakis D. J (2012). Ultrashort pulses and short-pulse equations in 2+1 dimensions. Physical Review A. vol.86.
Tsitsas N. L, Lakhtakia A, Frantzeskakis D. J (2012). Solitons in a homogenized two-phase, isotropic, nonlinear, particulate composite medium. Journal of the Optical Society of America B. vol.29 no.9 p.2610-2616.
Tsitsas N. L (2012). Analysis of Electromagnetic Wave Propagation in Frequency Bands of Nonlinear Metamaterials. Applied Computational Electromagnetics Society Journal. vol.27 no.2 p.169-180.
Tsitsas Nikolaos, Martin P. A (2012). Finding a source inside a sphere. Inverse Problems.
Valagiannopoulos C. A, Tsitsas Nikolaos (2012). Field Enhancement in a Grounded Dielectric Slab by Using a Single Superstrate Layer. Advances in Optoelectronics.
Valagiannopoulos C. A, Tsitsas Nikolaos (2012). Integral Equation Analysis of a Low-Proﬁle Receiving Planar Microstrip Antenna With a Cloaking Superstrate. Radio Science. vol.47.
Valagiannopoulos C. A, Tsitsas Nikolaos, Fikioris G (2012). Convergence analysis and oscillations in the method of ﬁctitious sources applied to dielectric scattering problems. Journal of the Optical Society of America. vol.29 p.1-10.
Valagiannopoulos C. A, Tsitsas N. L (2012). Integral equation analysis of a low-profile receiving planar microstrip antenna with a cloaking superstrate. Radio Science. vol.47.

Conference Proceedings Article

Tsitsas N. L, Valagiannopoulos C. A (2012). Concentrating the electromagnetic power in a grounded dielectric slab excited by an external Gaussian beam. Proceedings of 2012 International Conference on Mathematical Methods in Electromagnetic Theory (MMET 2012). Kharkiv, Ukraine. p.304-307.
Tsitsas N. L, Lakhtakia A, Frantzeskakis D. J (2012). Characteristics of soliton propagation in an isotropic chiral metamaterial. Proceedings of the Sixth International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (Metamaterials 2012). Saint Petersburg, Russia. p.38-40.
Tsitsas N. L (2012). On an electromagnetic inverse source problem for the excitation of a spherical medium. Proceedings of 2012 International Conference on Electromagnetics in Advanced Applications (ICEAA 2012). Cape Town, South Africa. p.756-759.
Valagiannopoulos C. A, Tsitsas N. L (2012). Cloaking a microstrip antenna: Integral equation modelling. Proceedings of 2012 International Conference on Electromagnetics in Advanced Applications (ICEAA 2012). Cape Town, South Africa. p.383-386.
Τσίτσας Νικόλαος (2012). Αντίστροφα Προβλήματα Προσδιορισμού Παραμέτρων Σφαιρικών Μέσων. 14ο Πανελλήνιο Συνέδριο Μαθηματικής Ανάλυσης. Πάτρα, Ελλάδα.

(2011)

Book Chapter

Tsitsas Nikolaos, Valagiannopoulos C. A (2011). Mathematical Modeling of Spherical Microstrip Antennas and Applications. Microstrip Antennas.
Tsitsas Nikolaos (2011). Inverse Scattering in the Low-Frequency Region by Using Acoustic Point Sources. Waves in Fluids and Solids.

Journal Article

Prokopiou P, Tsitsas Nikolaos. Electromagnetic Excitation of a Spherical Medium by an Arbitrary Dipole and Related Inverse Problems. Studies in Applied Mathematics.

Distinctions

Updated: 2021-05-04

Quality Assurance Unit (MODIP)Aristotle University of Thessaloniki

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Curriculum Vitae

Nikolaos Tsitsas

Προπτυχιακές Σπουδές

Μεταπτυχιακές Σπουδές

Διδακτορικό Δίπλωμα

Courses of Winter semester of 2020–21 academic year

Courses of Spring semester of 2020–21 academic year

Student Theses within AUTh

Doctoral

Undergraduate

Postgraduate

Doctoral

Undergraduate

Postgraduate

Undergraduate

Doctoral

Postgraduate

Undergraduate

Postgraduate

Undergraduate

Journal Article

Journal Article

Journal Article

Book Chapter

Conference Proceedings Article

Journal Article

Conference Proceedings Article

Journal Article

Conference Proceedings Article

Journal Article

Journal Article

Conference Proceedings Article

Journal Article

Conference Proceedings Article

Book Chapter

Journal Article

2019

2016

2006

Quality Assurance Unit (MODIP)
Aristotle University of Thessaloniki