ASSOC.PROF.DR. ÖZLEM TÜRKŞEN    
Name : ÖZLEM
Surname : TÜRKŞEN
E-Mail : turksen@ankara.edu.tr
Phone Number : +90 312 2126720 / 1506
Title : ASSOC.PROF.DR.
Unit : FACULTY OF SCIENCES
Department : DEPARTMENT OF STATISTICS
Personal Information

Education

Doctor of Philosophy (Ph.D.) (2005-2011). Ankara University,   Department of Statistics, Ankara, Turkey

               Dissertation title: Fuzzy and Heuristic Approach to the Solution of Multi Response Surface  Problems Supervisor: Prof. Dr. Ayşen Apaydın

Master of Science (M.Sc.) (2002-2005). Ankara University, Department of Statistics, Ankara, Turkey

   Dissertation title: The Adaptive Simulated Annealing Method in Estimation of Earthquake Source Parameters Through Surface Measurement   Supervisor: Prof. Dr. Ayşen Apaydın

Bachelor of Science (B.S.) (1998-2002). Ankara University, Department of Statistics, Ankara, Turkey

  

Work Experience


Assoc.Prof. (February 2017 - ongoing) Ankara University, Department of Statistics, Ankara, Turkey

Assist.Prof. (September 2014 – February 2017) Ankara University, Department of Statistics, Ankara, Turkey

Visiting Scholar (February 2016 - February 2017) Marmara University, Department of Statistics,          İstanbul, Turkey

Research Assistant, Ph.D. (November 2011– September 2014) Ankara University, Department of Statistics, Ankara, Turkey

Research Assistant (April 2004 – November 2011) Ankara University, Department of Statistics, Ankara, Turkey

 

Teaching Interests              

·      Probability and Statistics

·      Regression Analysis

·      Linear Programming

·      Optimization

·      Operations Research

·      Multi-criteria Decision Making

·      Biostatistics 

 

Research Interests

·       Response Surface Methodology

·       Computational Statistics

·       Statistical Inference

·       Soft Computing Techniques

·       Heuristic Algorithms

·       Multi-objective Optimization

·       Fuzzy Modeling


Awards, Distinctions and Fellowships

TUBİTAK (The Scientific and Technological Research Council of Turkey) Scholarship (February 2016 - February 2017). 2218-Post Doctoral National Program, Visiting Scholar, Marmara University, Department of Statistics, İstanbul, Turkey, Hosts: Prof. Dr. Müjgan Tez and Prof. Dr. Erol Eğrioğlu

COST (Combining Soft Computing Techniques and Statistical Methods to Improve Data Analysis Solutions) GRANT (October 2011 - November 2011). COST Short Term Scientific Mission Grant, Visiting Researcher, COST Action IC0702, Technical University of Lisbon (IST), Department of Mechanical Engineering, Lisbon, Portugal, Host: Prof. Dr. Joao Miguel De Costa Sousa, € 1400 (awarded)

TUBİTAK (The Scientific and Technological Research Council of Turkey) Scholarship (March 2010 - September 2010). 2214-Ph.D Student International Program, Technical University of Lisbon (IST), Department of Mechanical Engineering, Lisbon, Portugal, Host: Prof. Dr. Joao Miguel De Costa Sousa, $ 6000 (awarded)    

Second bachelor's degree (June 2002) Ankara University, Department of Statistics, Ankara, Turkey    


Project Participated  

Researcher (December 2009 - March 2012) COST Action IC0702 – Combining Soft Computing Techniques and Statistical Methods to Improve Data Analysis Solutions, European Union Project.


Project Meetings Participated 

COST Action, MC and WGs meetings, October 1-2, 2010, University of Oviedo, Oviedo, Austrias, Spain

COST Action, MC and WGs meetings, October 27-28, 2011, Instituto Superior Tecnico, Technical University of Lisbon, Lisbon, Portugal

COST Action, MC and WGs meetings, March 19-20, 2012, Consiglio Nazionale Delle Ricerche (CNR), Piazzale Aldo Moro 7, Rome, Italy.

 

Other Professional Activities

M.Sc. and Ph.D. Thesis Jury

Department of Statistics, Ankara University, Ankara, Turkey (Ph.D., 2015)

Department of Statistics, Gazi University, Ankara, Turkey (M.Sc., 2015)

Department of Statistics, Van 100. Yıl University, Van, Turkey (M.Sc., 2015)

Department of Statistics, Hacettepe University, Ankara, Turkey (M.Sc., 2017)


Ph.D. Thesis Following Committee

Department of Statistics, Anadolu University, Eskişehir, Turkey (2016 - ongoing)

 

Professional Memberships

Fuzzy Systems Association (2013 - ongoing)

The Turkish Statistical Association (2005 - ongoing)

COST Action IC0702  (2009 - 2012)


Editorial Board

Applied Soft Computing

 

Member of Organizing Committee

International Conference on Trends and Perspectives in Linear Statistical Inference (LinStat2016), August 22-25, 2016, İstanbul, Turkey

International Workshop in Honor of Professor Ömer L. Gebizlioğlu on his 60th   Birth Anniversary and his Retirement, June 14-15, 2012, Ankara, Turkey

 

Member of Commission

Accreditation Commission, Ankara University, Faculty of Science, Department of Statistics, Ankara, Turkey (2015 - ongoing)


Coordinatorship

Ankara University, Faculty of Science, Department of Statistics, ERASMUS Coordinator, Ankara, Turkey (February 2017 - ongoing)


Participant of Student Meetings

  • 14th International Statistics Student Colloquium, April 20-21, 2017, Eskişehir, Turkey (hosted by The Turkish Statistical Association and Anadolu University, Department of Statistics).
  • 11th International Statistics Student Colloquium, May 17-19, 2014, İstanbul, Turkey (hosted by The Turkish Statistical Association and Yıldız Technical University, Department of Statistics).
  • 10th International Statistics Student Colloquium, May 18-19, 2013, Muğla, Turkey (hosted by The Turkish Statistical Association and Muğla Sıtkı Koçman University, Department of Statistics).
  • 9th International Statistics Student Colloquium, May 5-6, 2012, Elazığ, Turkey (hosted by The Turkish Statistical Association and Fırat University, Department of Statistics).
  • 8th International Statistics Student Colloquium, May 14-15, 2011, İzmir, Turkey (hosted by The Turkish Statistical Association and Dokuz Eylül University, Department of Statistics).
  • 6th Statistics Student Colloquium, May 18-19, 2009, Adana, Turkey (hosted by The Turkish Statistical Association and Çukurova University, Department of Statistics).
  • 5th Statistics Student Colloquium, May 6-7, 2008, Konya, Turkey (hosted by The Turkish Statistical Association and Selçuk University, Department of Statistics).
  • 4th Statistics Student Colloquium, May 12-13, 2007, Trabzon, Turkey (hosted by The Turkish Statistical Association and Karadeniz Technical University, Department of Statistics).


Thesis Supervised

M.Sc. Thesis

Fikret Akgün, Parameter Estimation of Compartment Models in the Event of  Nonnormally Distributed Errors (2015 - ongoing)


Publications, Presentations and Abstracts

Published Papers

[15] Statistical Inference for α-Series Process with the Inverse Gaussian Distribution. (2017) Kara, M., Türkşen, Ö. and Aydoğdu, H. Communications in Statistics - Simulation and Computation, 46(6), 4938-4950. (SCI-Exp.)

[14] Analysis of Response Surface Model Parameters with Bayesian Approach and Fuzzy Approach. (2016) Türkşen, Ö. International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 24(1), 109-122. (SCI-Exp.) 

[13] An Application of Nelder-Mead Heuristic-based Hybrid Algorithms: Estimation of Compartment Model Parameters. (2016) Türkşen, Ö. and Tez, M. International Journal of Artificial Intelligence, 14(1), 112-129. (SCOPUS) 

[12] Multi-objective Portfolio Optimization with NSGA-II and Portfolio Selection by using TOPSIS Applied to Stock Market in Turkey. (2015) Türkşen, Ö., Açık Kemaloğlu, S. and Apaydın, A. Selçuk Journal of Applied Mathematics, 16(2), 3-12. (Mathematical Reviews, TÜBİTAK-ULAKBİM) 

[11] Statistical inference for geometric process with the inverse Gaussian distribution. (2015) Kara, M., Aydoğdu, H. and Türkşen, Ö. Journal of Statistical Computation and Simulation, 85(16), 3206-3215. (SCI-Exp.) 

[10] Optimization of saponification process in multi-response framework by using desirability function approach. (2015) Türkşen, Ö. and Ertunç, S. Sakarya University Journal of Science, 19(2), 141-149. (EBSCO, TÜBİTAK-ULAKBİM) 

[9] Optimization and Decision Making Stages for Multiple Responses: An Application of NSGA-II and FCM Clustering Algorithm. (2015) Türkşen, Ö. Gazi University Journal of Science, 28(2), 321-330. (EBSCO, SCOPUS) 

[8] Comparison of Fuzzy Logic Based Models for the Multi-Response Surface Problems with Replicated Response Measures. (2015) Türkşen, Ö. and Güler Dinçer, N. Applied Soft Computing, 37, 887-896. (SCI-Exp.) 

[7] Estimation of Fault Plane Parameters by Using Stochastic Optimization Methods. (2014) Türkşen, Ö. International Journal of Earthquake Engineering and Hazard Mitigation, 2(2), 61-66. (EBSCO) 

[6] A Decision Making Analysis Application With Fuzzy TOPSIS Method For The Solution Set of Fuzzy Multi-objective Optimization Problems: Binh-Kern Problem. (2013) Türkşen, Ö. and Apaydın, A. Fırat University Journal of Science, 25(2), 137-146 (in Turkish). (EBSCO)

[5] Evaluation of Fuzzy Pareto Solution Set by Using Fuzzy Relation Based Clustering Approach For Fuzzy Multi-Response Experiments. (2013) Türkşen, Ö. and Apaydın, A. Sakarya University Journal of Science, 17(1), 75-84. (EBSCO, TÜBİTAK-ULAKBİM) 

[4] Estimating The Earthquake Source Parameters: Simulated Annealing Versus Nelder-Mead Simplex Algorithm. (2013) Türkşen, Ö. and Apaydın, A. Commun. Fac. Sci. Univ. Ank. Series A1, 62(2), 53-66. (MathSciNet, TÜBİTAK-ULAKBİM) 

[3] Modeling and Optimization of Multi-Response Surface Problems With Fuzzy Approach. (2012) Türkşen, Ö. and Apaydın, A. Anadolu University Journal of Science and Technology (AUJST-A), 13(1), 65-79 (in Turkish). (EBSCO, TÜBİTAK-ULAKBİM) 

[2] Quantum chemical studies of some amino acids on the corrosion of cobalt in sulfuric acid solution. (2011) Gece, E.G., Bilgiç, A.S. and Türkşen, Ö. Materials and Corrosion, 61(2), 141-146. (SCI) 

[1] Obtaining The Global Minimum Values Of Nonlinear Unconstrained Functions by The Adaptive Simulated Annealing Method. (2007) Apaydın, A. and Türkşen, Ö. Selcuk University Journal of Science Faculty, 30, 1-15 (in Turkish). (TÜBİTAK-ULAKBİM) 


Chapters in Books


[3] Parameter Estimation of Nonlinear Response Surface Models by Using Genetic Algorithm and Unscented Kalman Filter. (2016) Türkşen, Ö. and Köksal Babacan, E. Chaos, Complexity and Leadership 2014, Springer Proceedings in Complexity, Ş.Ş. Erçetin (Ed.), Switzerland, Springer, 37, 393-401.

[2] A Modeling Approach Based on Fuzzy Least Squares Method for Multi Response Experiments with Replicated Measures. (2014) Türkşen, Ö. and Apaydın, A. Chaos, Complexity and Leadership 2012, Springer Proceedings in Complexity, S. Banerjee, Ş.Ş. Erçetin (Eds.), Springer, Dordrecht, 19, 153-158. 

[1] Comparison of Multi-objective Algorithms Applied to Feature Selection. (2013) Türkşen, Ö., Vieira, S.M., Madeira, J.F.A., Apaydın, A., Sousa, J.M.G. Towards Advanced Data Analysis by Combining Soft Computing and Statistics, C. Borgelt, M.A. Gil, J.M.G. Sousa, M. Verleysen (Eds.), Springer, Heidelberg, 359-375.

 

 Conference Presentations and Papers Published in Proceedings


[6] A Hybrid Compartment Model Approaches Based on Particle Swarm Optimization. Türkşen, Ö., Eğrioğlu, E. and Tez, M. Xth International Statistics Days Conference – ISDC’2016 (IGS 2016), October 7-9, 2016, Giresun, Turkey, pp.832-839.

[5] Fuzzy Modeling for Replicated Response Measures by Using Type-2 Fuzzy Numbers. Türkşen, Ö. and Kocadağlı, O. The 4th International Fuzzy Systems Symposium, November 5-6, 2015, İstanbul, Turkey, pp.464-468. 

[4] Estimation of Fault Plane Parameters by Using Stochastic Optimization Methods. Türkşen, Ö. 15th EU/ME Workshop Metaheuristics and Engineering, March 24-25, 2014, İstanbul, Turkey, pp.71-76. 

[3] Evaluation of Fuzzy Pareto Solutions through Fuzzy Decision Making Approach for Multi Response Surface Problems. Apaydın, A and Türkşen, Ö. 12th International Symposium on Econometrics Statistics and Operational Research (12.EYI), May 26-29, 2011, Denizli, Turkey, pp.70-81 (in Turkish). 

[2] Optimization of Multi Response Surface Problems With Simulated Annealing Method. Apaydın, A. and Türkşen Ö. 6th Statistics Congress, April 29-May 3, 2009, Antalya, Turkey, pp. 531-535 (in Turkish). 

[1] Türkşen , Ö., Köksoy, O. and Apaydın, Quality Improvement: A Simulated Annealing Approach to Dual Response Surface Analysis. 6th Statistics Symposium, August 28-30, 2008, Samsun, Turkey, pp. 214-220 (in Turkish). 

 

Conference Presentations and Papers Published in Abstract Books

[28] A Proposal Fuzzy Linear Modeling Approach Based on the Golden Ratio for Replicated Response Measures. Türkşen, Ö. 37th National Operations Research and Industrial Engineering CongressJuly 5-7, 2017, İstanbul, Turkey, pp.29-30. 

[27] An Application of Multi-Objective Optimization Approach to Saponification Process. Türkşen, Ö. and Ertunç, S. 3rd International Researchers, Statisticians and Young Statisticians Congress (IRSYSC-2017), May 24-26, 2017, Konya, Turkey, pp.201.

[26] Obtaining Point Estimates of Nonlinear Regression Model Parameters by Hybridization of Iterative and Direct Optimization Algorithms. Akgün, F., Türkşen, Ö. and Tez, M. 3rd International Researchers, Statisticians and Young Statisticians Congress (IRSYSC-2017), May 24-26, 2017, Konya, Turkey, pp.159.

[25] Inferences on Fuzzy Linear Model Parameter Estimates by Using Bootstrap Method for Replicated Response Measures. Türkşen, Ö. International Workshop on Mathematical Methods in Engineering-MME 2017, April 27-29, 2017, Ankara, Turkey, pp. 130-131. 

[24] A Proper Method for Fuzzy Parameter Estimation of Linear Model with Replicated Response Measures. Türkşen, Ö., Erginel, N. and Şentürk, S. International Workshop on Mathematical Methods in Engineering-MME 2017, April 27-29, 2017, Ankara, Turkey, pp. 131. 

[23] Estimation of compartment model parameters by combining genetic algorithm and Jackknife method. Türkşen, Ö. and Tez, M. The 10th Tartu Conference on Multivariate Statistics, June 28-July 1, 2016, Tartu, Estonia, pp.62. 

[22] Modeling of replicated response measures by using interval arithmetic. Sarıca, B., Türkşen, Ö. and Kahraman, C. The 10th Tartu Conference on Multivariate Statistics, June 28-July 1, 2016, Tartu, Estonia, pp.53. 

[21] Evaluation of Two-Compartment Model Parameter Estimates through Bootstrap Method. Türkşen, Ö. and Tez, M. International Conference on Trends and Perspectives in Linear Statistical Inference (LinStat2016), August 22-25, 2016, İstanbul, Turkey, pp.61. 

[20] Artificial Intelligence Optimization Methods Application in Compartment Models. Türkşen, Ö. and Tez, M. The Seventh International Conference on Mathematical Statistics (PROBASTAT 2015), June 29-July 3, 2015, Trnava, Slovakia, pp. 49.

[19] Optimization of Compartment Models by Using Metaheuristic Approaches. Türkşen, Ö. and Tez, M. International Conference on Trends and Perspectives in Linear Statistical Inference (LINSTAT 2014), August 24-28, 2014, Linköping, Sweden, pp.79. 

[18] Mixture of Marshall-Olkin Bivariate Weibull and Block-Basu Bivariate Weibull Distributions. Çalış, N, Türkan, A.H. and Türkşen, Ö. 9th International Statistics Day Symposium (ISDS 2014), May 10-14, 2014, Antalya, Turkey, pp.108 (poster). 

[17] Estimation in alfa-Series Process with Inverse Gaussian Distribution. Kara, M., Türkşen, Ö. and Aydoğdu, H. 9th International Statistics Day Symposium (ISDS 2014), May 10-14, 2014, Antalya, Turkey, pp.56. 

[16] Modeling, Optimizing, and Decision Making Stages for Multi-Response Problems in Case of Correlated Responses. Türkşen, Ö. 9th International Statistics Day Symposium (ISDS 2014), May 10-14, 2014, Antalya, Turkey, pp.40. 

[15]  A Stepwise Analysis for Improvement of Beta-Glukan Production in Statistical Point of View. Ertunç, S., Türkşen, Ö., Akay, B., Boyacıoğlu, H. and Sabuncu, N. 9th International Statistics Day Symposium (ISDS 2014), May 10-14, 2014, Antalya, Turkey, pp.7. 

[14] Parameter Estimation of Nonlinear Response Surface Models by Using Genetic Algorithm and Unscented Kalman Filter. Türkşen, Ö. and Köksal Babacan, E. 2nd International Symposium on Chaos, Complexity and Leadership, December 17-19, 2013, Ankara, Turkey. 

[13] Uncertainty Assessment of the Response Surface Model Parameters with Bayesian and Fuzzy Approaches. Türkşen, Ö. 8th International Statistics Congress, October 27-30, 2013, Antalya, Turkey, pp.113-114. 

[12] Local Regression Based on Fuzzy Clustering and Application to Forecasting of Autoregressive Models. Güler Dinçer, N. and Türkşen, Ö. 8th International Statistics Congress, October 27-30, 2013, Antalya, Turkey, pp.44-45 (in Turkish). 

[11] Modeling of Response Surfaces with Replicated Measures by Using Fuzzy Least Squares Regression and Switching Fuzzy C Regression. Türkşen, Ö., Güler Dinçer, N. and Apaydın, A. 13th Annual ENBIS Conference, September 15-19, 2013, Ankara, Turkey, pp.44. 

[10] Poisson Regression Analysis in the Presence of Measurament Error. Dağalp, R., Türkşen, Ö. and Köksal Babacan, E. 2nd International Eurasian Conference on Mathematics Sciences and Applications (IECMSA-2013), August 26-29, 2013, Sarajevo, Bosnia-Herzegovina, pp. 341. 

[9] Parameter Estimation in Geometric Process with the Inverse Gaussian Distribution. Türkşen, Ö., Kara, M. and Aydoğdu, H. 2nd International Eurasian Conference on Mathematics Sciences and Applications (IECMSA-2013), August 26-29, 2013, Sarajevo, Bosnia-Herzegovina, pp. 339. 

[8] Multi-objective portfolio optimization with Nondominated Sorting Genetic Algorithm-II. Türkşen, Ö., Açık Kemaloğlu, S. and Apaydın, A. 8th International Symposium of Statistics, October 11-13, 2013, Eskişehir, Turkey, pp.377-378. 

[7] Performance metrics for the fuzzy modified multiobjective algorithms. Türkşen, Ö. and Apaydın, A. 8th International Symposium of Statistics, October 11-13, 2013, Eskişehir, Turkey, pp.374-376. 

[6] A Modeling Approach Based on Fuzzy Least Squares Method for Multi-Response Experiments with Replicated Measures. Türkşen, Ö. and Apaydın, A. International Symposium on Chaos, Complexity and Leadership, December 20-22, 2012, Ankara, Turkey. 

[5] Assessment of an insurance problem as a multi objective optimization problem. Apaydın, A., Tank, F. and Türkşen, Ö. 15th International Congress on Insurance: Mathematics and Economics-IME, June 14-17, 2011, Trieste, Italy. 

[4] Obtaining Fuzzy Pareto Solutions of Fuzzy Multiresponse Surface Problems with Nondominated Sorting Genetic Algorithm-II. Apaydın, A and Türkşen, Ö. 7th International Statistics Congress, April 28-May 1, 2011, Antalya, Turkey, pp.200-201. 

[3] Multi-objective optimization of feature selection problems using fuzzy models. Türkşen, Ö., Vieira, S., Sousa, J.M. and Apaydın, A. 24th European Conference on Operational Research (EURO XXIV), July 11-14, 2010, Lisbon, Portugal, pp.82. 

[2] Heuristic Approach To The Solutions of Nonlinear Functions With Adaptive Simulated Annealing. Apaydın, A. and Türkşen, Ö. 5th Statistical Congress and Risk Measures and Solvency Meeting, May 20-24, 2007, Antalya, Turkey, pp. 122-123 (in Turkish). 

[1] Efficiency of Nonlinear Optimization Methods In Estimations of Earthquake Search Parameters Through Source Measurement. Apaydın, A. and Türkşen, Ö. 4th Statistical Congress, May 8-12, 2005, Antalya, Turkey, pp.334-335, (in Turkish, poster). 


Seminars and Invited Speeches 

[10] “A Fuzzy Nonlinear Regression Model: L2 Norm Estimation with Genetic Algorithm by Using Type-2 Fuzzy Numbers” Türkşen, Ö. 2nd Statistics and Soft Computing Workshop, Marmara University, Statistics Department, September 29, 2017, İstanbul, Turkey (in Turkish).

[9] “Evaluation of Compartment Model Parameters with Statistical Perspective in Pharmacokinetic Area”. Türkşen, Ö. Acıbadem University, Biostatistics Department, November 28, 2016, İstanbul, Turkey.

[8] “Metaheuristic Approaches for Response Surface Problems”. Türkşen, Ö. Statistics and Soft Computing Workshop, Marmara University, Statistics Department, January 20, 2015, İstanbul, Turkey (in Turkish). 

[7] “Analysis of Response Surface Problems in Statistical and Fuzzy Framework”. Türkşen, Ö. Karadeniz Technical University, Department of Geomatics Engineering, July 20, 2014, Trabzon, Turkey. 

[6] “Optimization of Nonlinear Response Surface Problems with Genetic Algorithm”. Türkşen, Ö. Marmara University, Statistics Department, March 26, 2014, İstanbul, Turkey (in Turkish). 

[5] “Modeling and Optimization of Response Surface Problems in a Fuzzy Framework”. Türkşen, Ö. Lisbon University, Department of Statistics and Operations Research, June 26, 2013, Lisbon, Portugal. 

[4] “Comparison of Multiobjective Algorithms Applied to Feature Selection”. Türkşen, Ö. The Final Conference of COST Action IC0702 SoftStat, Consiglio Nazionale Delle Ricerche (CNR), March 19-20, 2012, Rome, Italy. 

[3] “Multi-objective approaches for feature selection problems”. Türkşen, Ö. Technical University of Lisbon (IST), Department of Mechanical Engineering, July 29, 2010, Lisbon, Portugal. 

[2] “Heuristic Approach for Parameter Estimation”. Türkşen, Ö. Ankara University, Department of Statistics, May 2007, Ankara, Turkey (in Turkish). 

[1] “Efficiency of Nonlinear Optimization Methods for Earthquake Source Parameters Estimation Through Surface Measurement”. Türkşen, Ö. Ankara University, Department of Statistics, May 2004, Ankara, Turkey (in Turkish).


Personal Information

Year and Place of Birth: July 17, 1979, Çubuk,  Ankara, Turkey

Citizenship: Turkish

Languages: Turkish (native language), English (fluent)

Gender: Female

Marital Status: Single

Hobbies: Reading (specially biographies, poetries, history books), writing, bicycling, patchwork sewing, walking, travelling, art and photography.

  

vısıted countrıes

Letonia (Riga, 2016, 2 days)

Estonia (Tallinn, 2016, 2 days ; Tartu, 2016, 4 days)

Austria (Vienna, 2015, 2 days)

Slovakia (Bratislava, 2015, 2 days ; Trnava, 2015, 4 days)

Sweden (Stockholm, 2014, 2 days ; Linköping, 2014, 4 days)

Bosnia-Herzegovina (Sarajevo, 2013, 4 days)

Portugal (Lisbon, 2013, 3 weeks ; Lisbon, 2011, 3 weeks;

           Lisbon, 2010, 6 months)

Italy (Rome, 2012, 2 days ; Trieste, 2011, 3 days ;

   Venice, 2011, 2 days)

Spain (Oviedo, 2010, 2 days ; Barcelona, 2010, 2 days;

      Sevilla, 2010, 2 days)