Papers and Publications

Articles Published in Probability, Statistics, and Mathematical Journals

* Methodology Articles in Medical, Imaging and Other Areas

o Application Articles Published in Medical, Imaging, and Other Area Journals

57. ◊ E. Ceyhan, J.C. Wierman, and P. Xiang. Law of Large Numbers for a Two-Dimensional Class Cover Problem. ESAIM: Probability and Statistics, 25:376-407, June 2021.

56. ◊ S. Bahadır and E. Ceyhan. On the Number of Weakly Connected Subdigraphs in Random kNN Digraphs. Discrete & Computational Geometry. 65(1): 116-142, January 2021.

55. ◊ S. Bahadır and E. Ceyhan. A Classification of Isomorphism-Invariant Random Digraphs. Contributions to Discrete Mathematics. 15(3): 43-74, December 2020.

54. ◊ A. Manukyan and E. Ceyhan. Classification using proximity catch digraphs. Machine Learning. 109(4): 761-811, May 2020.

53. ◊ Domination number of an interval catch digraph family and its use for testing uniformity, Statistics. 54(2): 310-339, January 2020.

52. o G.G. Singh, V. Farjalla, B. Chen, A. Pelling, E. Ceyhan, M. Dominik, E. Alisic, J. Kerr, N. Selin, G. Bassioni, E. Bennett, A. Kemp, K.M. Chan. Researcher engagement in policy deemed societally beneficial yet unrewarded. Frontiers in Ecology and the Environment. 17(7): 375-382, August 2019.  Also available as PeerJ Preprints 6:e26672v2 at https://doi.org/10.7287/peerj.preprints.26672v2, 2018.

51 ◊ A contingency table approach based on nearest neighbor relations for testing self and mixed correspondence. SORT-Statistics and Operations Research Transactions, 42(2):125-158, July-December 2018.

50. ◊ S. Bahadir and E. Ceyhan. On the Number of reflexive and shared nearest neighbor pairs in one-dimensional uniform data. Probability and Mathematical Statistics, 38(1):123-137, July 2018.

49. ◊ Cell-specific and post-hoc spatial clustering tests based on nearest neighbor contingency tables. Journal of the Korean Statistical Society, 46(2):219-245, June 2017.

48. * E. Ceyhan, T. Nishino, K.N. Botteron, M.I. Miller and J.T. Ratnanather. Analysis of cortical morphometric variability using labeled cortical distance maps. Statistics and Its Interface, 10(2), 313-341, 2017. 

47. ◊  E. Ceyhan and S. Bahadir. Nearest neighbor methods for testing reflexivity. Environmental and Ecological Statistics, 24(1):69-108, March 2017.

46. ◊ Density of a random interval catch digraph family and its use for testing uniformity. REVSTAT, 14(3):349-394, November 2016.

45. ◊ A. Manukyan and E. Ceyhan. Classification of imbalanced data with a geometric digraph family (from arxiv.org). Journal of Machine Learning Research, 17(189):1-40, 2016.

44. ◊ Edge density of new graph types based on a random digraph family. Statistical Methodology, 33: 31-54, August 2016.

43. o M. Asik, F. Tufan, T.S. Akpinar, N. Akalin, E. Ceyhan, N. Tunc, Z.I. Hasiloglu, M.R. Altiparmak, T. Ecder and S. Albayram. Frequency of nerve root sleeve cysts in autosomal dominant polycystic kidney disease. Balkan Medical Journal, 33(6):652-656, November 2016.

42. o O. Erdem, E. Ceyhan and Y. Varli. A new correlation coefficient for bivariate time-series data. Physica A: Statistical Mechanics and its Applications, 414:274-284, November 2014.

41. o J.T. Ratnanather, S. Cebron, E. Ceyhan, E. Postell, D.V. Pisano, C.B. Poynton, B. Crocker, N.A. Honeycutt, P.B. Mahon and P.E. Barta. Morphometric differences in planum temporale in schizophrenia and bipolar disorder revealed by statistical analysis of labeled cortical depth maps. Frontiers in Psychiatry, 5:94, August 2014.

40. ◊ Simulation and characterization of multi-class spatial patterns from stochastic point processes of randomness, clustering and regularity. Stochastic Environmental Research and Risk Assessment (SERRA), 28(5):1277-1306, July 2014.

39. ◊ Segregation indices for disease clustering. Statistics in Medicine, 33(10):1662-1684, May 2014.

38. ◊ Comparison of relative density of two random geometric digraph families in testing spatial clustering. TEST, 23(1):100-134, March 2014. doi:10.1007/s11749-013-0344-4

37. ◊ Testing spatial symmetry using contingency tables based on nearest neighbor relations. The Scientific World Journal, Volume 2014, Article ID 698296, January 2014.


36. o M. Takayanagi, J. Wentz, Y. Takayanagi, D.J. Schretlen, E. Ceyhan, L. Wang, M. Suzuki, A. Sawa, P.E. Barta, J.T. Ratnanather and N.G. Cascella. Reduced anterior cingulate gray matter volume and thickness in subjects with deficit schizophrenia. Schizophrenia Research, 150(2):484-490, November 2013.

35. o  J.T. Ratnanather, C.B. Poynton, D.V. Pisano, B. Crocker, E. Postell, S. Cebron, E. Ceyhan, N.A. Honeycutt, P.B. Mahon and P.E. Barta. Morphometry of superior temporal gyrus and planum temporale in schizophrenia and psychotic bipolar disorder. Schizophrenia Research, 150(2):476-483, November 2013.

34. *  E. Ceyhan, T. Nishino, D. Alexopoulos, R.D. Todd, K.N. Botteron, M.I. Miller and J.T. Ratnanather. Censoring distances based on labeled cortical distance maps in cortical morphometry. Frontiers in Neurology, vol 4, article 155: 1-16, October 2013.

33. * E. Ceyhan, K. Ertugay and S. Duzgun. Exploratory and inferential methods for spatio-temporal analysis of residential fire clustering in urban areas. Fire Safety Journal, 58:226-239, May 2013.

32. * A. Coskun, E. Ceyhan, T.C. Inal, M. Serteser and I. Unsal. The comparison of parametric and nonparametric bootstrap methods for reference interval computation in small sample size groups. Accreditation and Quality Assurance, 18(1):51-60, January 2013.

31. ◊ V. Aksakalli and E. Ceyhan. Optimal obstacle placement with disambiguations. Annals of Applied Statistics, 6(4):1730-1774, December 2012.

30. o S. Unel, M. Yılmaz, S. Albayram, Z. Işık, E. Ceyhan, H. Işıldak, M. Teixido, Y. Savaş and A. Kiris. Anastomoses of the vestibular, cochlear, and facial nerves. Journal of Craniofacial Surgery, 23(5):1358-1361, September 2012.

29. * E. Ceyhan, F. Xu, U.A. Gurkan, A.E. Emre, E.S. Turalı, R. El Assal, A. Acıkgenc, C.M. Wu and U. Demirci. Prediction and control of number of cells in microdroplets by stochastic modeling. Lab on a Chip, 12(22), 4884-4893, October 2012.

28. * E. Ceyhan, M.F. Beg, C. Ceritoğlu, L. Wang, J.C. Morris, J.G. Csernansky, M.I. Miller and J.T. Ratnanather. Metric distances between hippocampal shapes indicate different rates of change over time in nondemented and demented subjects. Current Alzheimer Research, 9(8) : 972-981, October 2012.

27. ◊ The distribution of the relative arc density of a family of interval catch digraph based on uniform data. Metrika, 75(6):761-793, July 2012.

26. ◊ An investigation of new graph invariants related to the domination number of random proximity catch digraphs. Methodology and Computing in Applied Probability,14(2): 299-334, April 2012. doi:10.1016/j.csda.2005.03.002

25. o S. Unel, M. Yılmaz, S. Albayram, A. Kiris, Z. Işık, E. Ceyhan, H. Işıldak, Y. Savaş and Z. Keser. A radiological study on the topographical relationships between the vestibular, cochlear and facial nerves. The Eurasian Journal of Medicine, 44(1):6-12, January 2012.

24. o S.J. Moon, E. Ceyhan, U.A. Gurkan, and U. Demirci. Statistical modeling of single target cell encapsulation. PLoS ONE, 6(7): e21580. doi:10.1371/journal.pone.0021580, July 2011.

23. o S. Albayram, S. Saip, Z.I. Haşıloğlu, M. Teke, E. Ceyhan, M. Tutuncu, H. Selcuk, A. Kına and A. Siva. Evaluation of parenchymal neuro-Behcet disease by using susceptibility-weighted imaging. American Journal of Neuroradiology, 32(6):1050-1055, June-July 2011.

22. * E. Ceyhan, M.F. Beg, C. Ceritoğlu, L. Wang, J.C. Morris, J.G. Csernansky, M.I. Miller and J.T. Ratnanather. Quantization and analysis of hippocampal morphometric changes due to dementia of Alzheimer type using metric distances based on large deformation diffeomorphic metric mapping. Computerized Medical Imaging and Graphics, 35(4): 275-293, April 2011.

21. ◊ Spatial clustering tests based on domination number of a new family of random digraphs. Communications in Statistics - Theory and Methods, 40(8): 1363-1395, March 2011. doi:10.1080/03610921003597211

20. * E. Ceyhan, M. Hosakere, T. Nishino, J. Alexopoulos, R.D. Todd, K.N. Botteron, M.I. Miller and J.T. Ratnanather. Statistical analysis of cortical morphometrics using pooled distances based on labeled cortical distance maps. Journal of Mathematical Imaging and Vision, 40(1): 20-35, March 2011.

19. o Z. I. Haşıloğlu, S. Albayram, H. Selcuk, E. Ceyhan, S. Delil, B. Arkan and L. Baskoy. Cerebral microhemorrhages detected by susceptibility-weighted imaging in amateur boxers. American Journal of Neuroradiology, 32(1):99-102, January 2011.

18. ◊ Extension of one-dimensional proximity regions to higher dimensions. Computational Geometry: Theory and Applications, 43(9):721-748, November 2010. doi:10.1016/j.comgeo.2010.05.002 [This article was also featured at VerticalNews service of NewsRx.com].

17. ◊ On the use of nearest neighbor contingency tables for testing spatial segregation. Environmental and Ecological Statistics, 17(3), 247-282, September 2010.

16. ◊ Directional clustering tests based on nearest neighbour contingency tables. Journal of Nonparametric Statistics, 22(5):599-616, July 2010.

15. ◊ Exact inference for testing spatial patterns by nearest neighbor contingency tables. Journal of Probability and Statistical Sciences, 8(1):45-68, February 2010.

14. ◊ New tests of spatial segregation based on nearest neighbor contingency tables. Scandinavian Journal of Statistics, 37(1):147-165, February 2010.

13. ◊ E. Ceyhan and C. L. Goad. A comparison of analysis of covariate-adjusted residuals and analysis of covariance. Communications in Statistics - Simulation and Computation, 38(10):2019-2038, November 2009.

12. ◊ Overall and pairwise segregation tests based on nearest neighbor contingency tables. Computational Statistics & Data Analysis, 53(8):2786-2808, June 2009.

11. ◊ Class-specific tests of segregation based on nearest neighbor contingency tables. Statistica Neerlandica, 63(2):149-182, May 2009.

10. ◊ The distribution of the domination number of class cover catch digraphs for non-uniform one-dimensional data. Discrete Mathematics, 308(23):5376-5393, December 2008.

9. o N. Penumetcha, B. Jedynak, M. Hosakere, E. Ceyhan, K.N. Botteron and J.T. Ratnanather. Segmentation of arteries in MPRAGE images of the ventral medial prefrontal cortex. Computerized Medical Imaging and Graphics, 32(1):36-43, January 2008.

8. o M. Halac, S. Albayram, E. Ceyhan, H. Ozer, I. Doğan, S. Sağer and I. Uslu. Is early bladder activity in radionuclide cisternography an indirect sign of spontaneous intracranial hypotension or sequence of lumbar puncture? Clinical Nuclear Medicine, 32(11):850-853, November 2007.

7. o M. Kantarci, N. Ceviz, S. Sevimli, U. Bayraktutan, E. Ceyhan, C. Duran, A. Karaman, I. Durur and A. Okur. Diagnostic performance of multidetector computed tomography for detecting aorto-ostial lesions compared with catheter coronary angiography: Multidetector computed tomography coronary angiography is superior to catheter angiography in detection of aorto-ostial lesions. Journal of Computer Assisted Tomography, 31(4), 595-599, July/August 2007.

6. o M. Zhi, J.T. Ratnanather, E. Ceyhan, A.S. Popel and W.E. Brownell. Hypotonic swelling of salicylate-treated cochlear outer hair cells. Hearing Research, 228(1-2):95-104, June 2007.

5. ◊ E. Ceyhan, C.E. Priebe and D.J. Marchette. A new family of random graphs for testing spatial segregation. Canadian Journal of Statistics, 35(1):27-50, February 2007. doi:10.1002/cjs.5550350106

4. ◊ E. Ceyhan and C.E. Priebe. On the distribution of the domination number of a new family of parameterized random digraphs. Model Assisted Statistics and Applications, 1(4):231-255, 2006.

3. o F. Alper, M. Akgun, M. Kantarcı, A. Eroğlu, E. Ceyhan, O. Onbaş, C. Duran and A. Okur. Demonstration of vascular abnormalities compressing esophagus by MDCT: Special focus on dysphagia lusoria. European Journal of Radiology, 59(1):82-87, July 2006.

2. ◊ E. Ceyhan, C.E. Priebe and J.C. Wierman. Relative density of the random r-factor proximity catch digraphs for testing spatial patterns of segregation and association. Computational Statistics & Data Analysis, 50(8):1925-1964, April 2006.

1. ◊ E. Ceyhan and C.E. Priebe. The use of domination number of a random proximity catch digraph for testing spatial patterns of segregation and association. Statistics & Probability Letters, 73(1), 37-50, June 2005.

Some of the above articles and associated technical reports are posted at arXiv.org (http://front.math.ucdavis.edu/).

The articles # 7, 28, 29, 33, 35, 36, 40, 42, 44 are featured in the BUTTER Platform of NewsRx service.

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DISCUSSION NOTES

Discussion on the articles

4- "How to find an appropriate clustering for mixed-type variables with application to socio-economic stratification, C. Hennig and T. F. Liao". Journal of Royal Statistical Society, Series C (Applied Statistics), 62(3): 345, May 2013.

3- "Catching up faster by switching sooner: a predictive approach to adaptive estimation with an application to the AIC-BIC dilemma, T. van Erven and Peter Grunwald". Journal of Royal Statistical Society, Series B (Statistical Methodology), 74(3): 403, June 2012.

2- "Optimum design of experiments for statistical inference, S. G. Gilmour and L. A. Trinca". Journal of Royal Statistical Society, Series C (Applied Statistics), 61(3): 379-380, May 2012.

1- "Vignettes and health systems responsiveness in cross-country comparative analyses, N. Rice, S. Robone, and P.C. Smith". Journal of Royal Statistical Society, Series A (Statistics in Society), 175(2): 361-362, April 2012.

 

TECHNICAL MONOGRAPHS

2- Proximity Catch Digraphs: Auxiliary Tools, Properties, and Applications (based on PhD thesis), VDM Verlag, Saarbrucken, Germany. ISBN:978-3-639-19063-2, 2009.

1- Correcting for Covariates: Ratios, Residual Analysis, and ANCOVA (based on Masters thesis), VDM Verlag, Saarbrucken, Germany. ISBN:978-3-639-19607-8, 2009.

 

CONFERENCE PRESENTATIONS PUBLISHED IN THE PROCEEDINGS

24- A. Manukyan and E. Ceyhan. Statistical Learning Using Geometric Digraph Families. International Conference on Information Complexity and Statistical Modeling in High Dimensions with Applications, Cappadocia, Turkey, May 18-21, 2016.

23- V. Aksakalli, A.F. Alkaya, D. Oz, R. Algin and E. Ceyhan. Performance Evaluation of an Exact Method for the Obstacle Neutralization Problem. Proceedings of the Sixth International Conference on Industrial Engineering and Operations Management, Kuala Lumpur, Malaysia, March 8-10, 2016.

22- Pairwise and Other Post-hoc Tests of Spatial Clustering Based on NNCTs. Proceedings of the 2015 World Statistics Congress, Rio de Janeiro, Brazil, July 26-31, 2015.

21- A. Manukyan and E. Ceyhan. An Assessment of CCP Approach in Statistical Learning. Proceedings of the 2015 World Statistics Congress, Rio de Janeiro, Brazil, July 26-31, 2015.

20- S. Bahadir and E. Ceyhan. k Nearest Neighbor Contingency Table Analysis for Several Classes. European Meeting of Statisticians, Amsterdam, Netherlands, July 6-10, 2015.

19- P. Charyyev, E. Ceyhan and V. Aksakalli. Optimal Obstacle Placement with Disambiguation Problem. European Meeting of Statisticians, Amsterdam, Netherlands, July 6-10, 2015.

18- Invited Talk, Indices of Segregation for Disease Clustering. IASSL 2014 International Conference: Statistics and Society in the New Information Age: Challenges and Opportunities, Colombo, Sri Lanka, December 28-30, 2014.

17- Testing spatial clustering using relative density of two random geometric digraph families. Proceedings of the 2013 World Statistics Congress, Hong Kong, China, August 25-30, 2013.

16- V. Aksakalli and E. Ceyhan. The use of spatial graphs for optimal obstacle placement: A study on impact of the clutter spatial distribution. Proceedings of the 2013 World Statistics Congress, Hong Kong, China, August 25-30, 2013.

15- S. Albayram, S. Saip, Z.I. Haşıloğlu, M. Teke, E. Ceyhan, M. Tutuncu, H. Selcuk, A. Kına and A. Siva. Susceptibility ağırlıklı goruntuleme ile parenkimal norobehcet hastalığının değerlendirilmesi. Proceedings of the 46. National Neurology Congress (46. Ulusal NOroloji Kongresi Bildiri Kitabı), Antalya, Turkey, December 4-9, 2010.

14- S. Unel, S. Albayram, E. Ceyhan, N. Tunc, S. Aydın, Y. Savaş, A. Kırış, Z. Işık and Ş. Odabaşı. İc kulak kanalında ve serebellopontin mesafede 7. ve 8. sinirler arasındaki anastomozların manyetik rezonans goruntulemede 3B balanced fast field eko sekansı ile değerlendirilmesi. Proceedings of the Turkrad 2010, 31. National Radiology Congress (31. Ulusal Radyoloji Kongresi Bildiri Kitabı), Antalya, Turkey, November 7-12, 2010.

13- S. Albayram, M. Aşık, E. Ceyhan, Z. Işık, F. Tufan, N. Akalın, N. Tunc, H. Ozer, M. Altıparmak and T. Ecder, Frequency of nerve root sleeve cysts in autosomal dominant polycystic kidney disease. Proceedings of the ASNR 48th Annual Meeting & NER Foundation Symposium, Boston, MA, USA,May 15-20, 2010.

12- S. Albayram, M. Akan, E. Ceyhan, D. Gurbuz, Y. Savaş and A. Kırış, Beyin iskemisinin hiperakut, akut ve subakut evrelerinde difuzyon tensor değişikliklerinin değerlendirilmesi (An Evaluation of Diffusion Tensor Changes in the Brain Ischemia in Hyperacute, Acute, and Subacute Stages). Proceedings of the 30. National Radiology Congress (30. Ulusal Radyoloji Kongresi Bildiri Kitabı), Antalya, Turkey, November 4-9, 2009.

11- E. Ceyhan, C.E. Priebe and D.J. Marchette. The use of central similarity proximity catch digraphs for testing multivariate spatial patterns. 57th Session of the International Statistical Institute (ISI), Durban, South Africa, August 16-22, 2009.

10- Cok sınıflı uzaysal desen testlerinin ekolojik veri analizinde uygulanması (Application of multivariate spatial pattern tests for ecological data analysis). Proceedings of the 18. Statistical Research Symposium (18. İstatistik Araştırma Sempozyumu Bildiri Kitabı, simultaneously held at main TUİK (Turkish State Department of Statistics) centers in Turkey, May 7-8, 2009.

9- QR-Adjustment for clustering tests based on nearest neighbor contingency tables. HDM-2008 International Conference on Multivariate Statistical Modelling & High Dimensional Data Mining, Kayseri, Turkey, June 19-23, 2008.

8- Tekli uzaysal desen testlerinin ekolojik veri analizinde uygulanması (Application of univariate spatial pattern tests for ecological data analysis). Proceedings of the 17. Statistical Research Symposium (17. İstatistik Araştırma Sempozyumu Bildiri Kitabı), simultaneously held at main TUİK (Turkish State Department of Statistics) centers in Turkey, May 8-9, 2008.

7- E. Ceyhan, R.C. Olken, L. Fong, T.N. Tasky, M.K. Hurdal, M.F. Beg, M.E. Martone and J.T. Ratnanather. Modeling metric distances of dendrite spines of mice based on morphometric measures. Proceedings of the International Symposium on Health Informatics and Bioinformatics, Turkey'07 (HIBIT2007), Antalya, Turkey, April 29-May 2, 2007.

6- Edge correction for cell- and class-specific tests of segregation based on nearest neighbor contingency tables. Proceedings of the International Conference on Environment: Survival and Sustainability (ESS2007), Nicosia, Cyprus, February 19-24, 2007.

5- Edge correction for segregation tests based on nearest neighbor contingency tables. Proceedings of the International Conference of Applied Statistics, Ribno, Bled, Slovenia, September 23-26, 2007.

4- Edge correction for exact tests on nearest neighbor contingency tables for testing spatial segregation. Proceedings of the Joint Statistical Meeting, Section on Statistics and the Environment, American Statistical Association, Salt Lake City, UT, USA, July 29-August 2, 2007.

3- E. Ceyhan, M. Hosakere, T. Nishino, J. Alexopoulos, R.D. Todd, K.N. Botteron, M.I. Miller and J.T. Ratnanather. Statistical analysis of morphometric measures based on labeled cortical distance maps. Proceedings of Fifth International Symposium on Image and Signal Processing and Analysis, Istanbul, Turkey, September 27-29, 2007.

2- E. Ceyhan, L. Fong, T.N. Tasky, M.K. Hurdal, M.F. Beg, M.E. Martone and J.T. Ratnanather. Type-specific analysis of morphometry of dendrite spines of mice. Proceedings of Fifth International Symposium on Image and Signal Processing and Analysis, Istanbul, Turkey, September 27-29, 2007.

1- E. Ceyhan and C.E. Priebe, Central similarity proximity maps in Delaunay tessellations. Proceedings of the Joint Statistical Meeting, the Statistical Computing Section, American Statistical Association, San Francisco, CA, USA, August 3-7, 2003.

 

TALKS AND CONFERENCE PRESENTATIONS (not Published in the Proceedings)

29- SMAC Talk, Imbalanced Classification based on a Geometric Graph Family, Department of Statistics, Penn State, March 19, 2021.

28- IPS Presentation, Analysis of Cortical Thickness with Medical Imaging Data of Very High and Varying Dimensions per Subject. 9th Conference of the Asian Regional Section of the IASC (IASC-ARS 2015), Singapore, December 17-19, 2015.

27- S. Bahadir and E. Ceyhan. Classification of Isomorphism-Invariant Random Digraphs. IMBM Workshop on Graph Theory and Its Applications, Istanbul, Turkey, November 27-28, 2015.

26- Invited Talk, Analysis of High Dimensional Brain Imaging Data: Challenges and Possible Solutions. IWSDM 2015, Istanbul, Turkey, July 21-22, 2015.

25- Department Seminar, Domination number of a family of random geometric digraphs and its application to spatial clustering, Department of Applied Mathematics and Statistics, Johns Hopkins University, Baltimore, MD, USA, November 7, 2013.

24- A new family of random geometric graphs: Theory and applications [also presented as a poster]. TWAS 12th General Conference and 23rd General Meeting, Tianjin, China, September 18-21, 2012.

23- Invited Talk, Quantization and analysis of morphometric changes in brain tissues due to neuro-degenerative diseases. Third International Workshop on Statistical Mechanics and Dynamical Systems, Turunc/Marmaris, Turkey, August 27-September 2, 2012.

22- V. Aksakalli and E. Ceyhan. Optimal obstacle clustering patterns with disambiguations, 8th World Congress in Probability and Statistics, Istanbul, Turkey, July 9-14, 2012.

21- Seminar, Relative density of random proximity catch digraphs: Theory and applications, Department of Industrial Engineering, Cankaya University, December 24, 2010.

20- Special Mathematics Seminar, Domination number of random proximity catch digraphs: Theory and applications (in Turkish "Yakınlık yOnlu cizgelerinin baskınlık sayısı: Teori ve uygulamalar"), IMBM İstanbul Center for Mathematical Sciences--- Istanbul Discrete Mathematics Meetings, Boğazici University, November 26, 2010.

19- Mathematics Seminar, The asymptotic distribution of the domination number of a geometric digraph family (in Turkish "Geometrik bir yonlu cizge ailesinin baskınlık sayısının asimptotik dağılımı"), Department of Mathematical Engineering, Istanbul Technical University, November 12, 2010.

18- Presentation, Statistical tests, univariate analysis, parametric tests, nonparametric tests, and ANOVA methods for medical practice, Presented at the Summer Course on Research Methodology in Medical Sciences, Koc University, Istanbul, Turkey, July 19-23, 2010; July 18-22, 2011.

17- Presentation, The distribution of the domination number of a family of random catch digraphs based on one-dimensional data, The Fifth International Workshop in Applied Probability (IWAP 2010), Universidad Carlos III de Madrid, Madrid, Spain, July 5-8, 2010.

16- Mathematics Seminar, A graph invariant of a random digraph family for testing multivariate spatial interaction, Department of Mathematics, Izmir University of Economics, May 7, 2010.

15- Graduate Learning Seminar, A short synopsis on random graphs, spatial point patterns, and image analysis, Department of Mathematics, Koc University, November 2, 2009

14- Invited Seminar, Some nearest neighbor methods for detection of disease clustering, Session ES28, Small area estimation 1, Second Workshop of the ERCIM Working Group on Computing & Statistics, Limassol, Cyprus, October 29-31, 2009.

13- Statistics Seminar, Random proximity catch digraphs: Theory and applications - II, Department of Statistics, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil, September 25, 2009.

12- Probability Seminar, Random proximity catch digraphs: Theory and applications - I, Institute of Mathematics and Statistics, Universidade de Sao Paulo, Sao Paulo, Brazil, September 24, 2009.

11- S. Albayram, M. Akan, E. Ceyhan, D. Gurbuz and Y. Savaş. Evaluation of the anisotropy of the water diffusion tensor in hyperacute, acute and subacute stages of brain ischemia. 47th Meeting of American Society of Neuroradiology (ASNR), Vancouver, British Columbia, Canada, May 16-21, 2009.

10- Mathematics Seminar, Rassal yakınlık cizgeleri ve uygulamaları, Suleyman Demirel University, Isparta, Turkey, March 3, 2009.

9- Presentation, The asymptotic distribution of the domination number of proximity catch digraphs (in Turkish "Orantısal kenar yakınsal yOnlu cizgelerin baskınlık sayısının asimptotik dağılımının hesaplanması"). XXI. Ulusal Matematik Sempozyumu (21. National Mathematics Symposium), Istanbul, Turkey, September 1-4, 2008.

8- Presentation, The asymptotic distribution of the domination number of proportional edge proximity catch digraphs. The 7th World Congress in Probability and Statistics, Singapore, July 14-19, 2008.

7- Presentation, Extension of one-dimensional proximity maps to higher dimensions (in Turkish "Tek-boyutlu yakınlık fonksiyonlarının daha ust boyutlara genelleştirilmesi"). VI. Ulusal Geometri Sempozyumu (VI. National Geometry Symposium), Bursa, Turkey, July 1-4, 2008.

6- Invited Talk, Spatial point pattern analysis for astronomical data. 15. İstanbul İstatistik Fizik Gunleri (15. Istanbul Statistical Physics Symposium), Istanbul, Turkey, June 19-21, 2008.

5- Sci-Tech Seminar, Applying mathematics in quantifying (measuring) the morphometry (shape and size) of brain tissues, Koc University, October 31, 2006.

4- Invited Talk, M. Hosakere and E. Ceyhan. Analysis of ventral medial prefrontal cortex metrics for depression in twins at CIS Seminar Series, Johns Hopkins University, March 1, 2005.

3- Science-Math Seminar, A parameterized family of proximity catch digraphs in Delaunay tessellations and its use in testing spatial point patterns, Koc University, February 8, 2005.

2- Invited Talk, The relative density of r-factor proportional-edge proximity catch digraphs and its application to spatial point patterns at Statistics Colloquium, George Mason University, January 28, 2005.

1- Student Seminar, An investigation of proximity catch digraphs in Delaunay tessellations, Johns Hopkins University, October 1, 2004.

 

POSTERS (mostly on Medical Imaging)

23- A. Pearson and E. Ceyhan. A Network-Based Statistical Learning Method Robust to Class Imbalance. Auburn
University Postdoctoral Research Symposium, Auburn, AL, September 2, 2021.

22- Pattern Recognition with Parameterized Random Geometric Graphs. TWAS 25th General Meeting, Muscat, Oman, October 26-29, 2014.

21- New spatial segregation tests based on nearest neighbor contingency tables. VI International Workshop on Spatio-Temporal Modelling (METMAVI), Guimaraes, Portugal, September 12-14, 2012.

20- E. Ozel and E. Ceyhan. Extensions of domination number and their distribution for random interval catch digraph families. 8th World Congress in Probability and Statistics, Istanbul, Turkey, July 9-14, 2012.

19- E. Ozel and E. Ceyhan. The distribution of fractional domination number of a random digraph family based on one-dimensional uniform data. The Sixth International Conference on Probability and Statistics (PROBASTAT 2011), Bratislava, Slovakia, July 4-8, 2011.

18- Y. Varlı, E. Ceyhan and O. Erdem. A new correlation coefficient for bivariate time-series data. 3rd International Conference of the ERCIM Working Group on Computing & Statistics (ERCIM 10), London, UK, December 10-12, 2010 [Also presented at 18th Annual Conference of the Multinational Finance Society, Rome, Italy, June 26-29, 2011].

17- Poster Presentation, S. Unel, S. Albayram, E. Ceyhan, M. Aşık, S. Aydın, Y. Savaş, A. Kırış, Z. Işık and Ş. Odabaşı. İc kulak kanalında ve serebellopontin mesafede yedinci ve sekizinci kraniyal sinirlerin topografik iilişkilerinin manyetik rezonans goruntulemede 3B balanced fast field eko sekansıyla değerlendirilmesi. Turkrad 2010, 31. National Radiology Congress, Antalya, Turkey, November 7-12, 2010.

16- J. Sohn, B. Crocker, D.V. Pisano, C.B. Poynton, N.A. Honeycutt, E. Ceyhan, P.E. Barta and J.T. Ratnanather. Automated labeled cortical distance mapping pipeline for analyzing regional structures. 16th Annual Meeting of the Organization for Human Brain Mapping, Barcelona, Spain, June 6-10, 2010.

15- R. Pribik, K. Alpert, N. Mohan, J. Sohn, C.E. Priebe, E. Ceyhan, E. Cochran, W. Wen, M.F. Beg, L. Wang and J.T. Ratnanather. Structural changes of temporal lobe regions in bipolar disorder and schizophrenia patients. 16th Annual Meeting of the Organization for Human Brain Mapping, Barcelona, Spain, June 6-10, 2010.

14- S. Unel, S. Albayram, E. Ceyhan, S. Aydın, D. Gurbuz, N. Hatipoğlu, Y. Savaş, S. Odabaşı and A. Kırış. Determining the topographical relationship of the seventh and eighth nerves in the cerebellopontin cistern and internal auditory canal in living humans by using 3D gradient-echo sequence constructive interference in steady-state MR imaging. Proceedings of the ASNR 48th Annual Meeting & NER Foundation Symposium, Boston, MA, USA, May 15-20, 2010.

13- S. Unel, S. Albayram, E. Ceyhan, S. Aydın, D. Gurbuz, N. Hatipoğlu, Y. Savaş, S. Odabaşı and A. Kırış. Determining the anastomosis of the nerves in the internal auditory canal and cerellopontin cistern in living humans by using 3D gradient-echo sequence constructive interference steady-state MR imaging. Proceedings of the ASNR 48th Annual Meeting & NER Foundation Symposium, Boston, MA, USA, May 15-20, 2010.

12- S. Aydın, S. Albayram, E. Ceyhan, D. Gurbuz, S. Unel, F. Kantarcı, Y. Savaş and A. Kırış. Quantitative and qualitative comparison of 0.5M gadoterate meglumine and 1M gadobutrol in contrast-enhanced MR angiography of carotid arteries. Proceedings of the ASNR (American Society of Neuroradiology) 48th Annual Meeting & NER (Neuroradiology Education and Research) Foundation Symposium, Boston, MA, USA, May 15-20, 2010.

11- Testing the presence of the bacteria h. influenzae in children after drug treatments using generalized linear mixed models. IASC-ERS Summer School "Computational Aspects in Environmental Statistics", Pamporovo, Bulgaria, September 11, 2009.

10- New multi-class and directional clustering tests based on nearest neighbor contingency tables. Also published in the Proceedings of the International Conference on Nonparametric Inference (ISNI2008), Vigo, Galicia, Spain, November 5-7, 2008.

9- E. Ceyhan, C. Poynton, A. Qui, P. Barta and M.I. Miller. Statistical analysis of gender, laterality, and diagnosis effect on planum temporale. Human Brain Mapping, Florence, Italy, June 11-15, 2006.

8- E. Ceyhan, M. Hosakere, J. Alexopoulos, T. Nishino, C. Babb, J.T. Ratnanather, R. Todd, K.N. Botteron and M.I. Miller. Analysis of ventral medial prefrontal cortex metrics for depression in twins. Human Brain Mapping, Toronto, Canada, June 12-16, 2005.

7- L. Wang, M. Hosakere, E. Ceyhan, G. Kaplan, M. Gado, J.T. Ratnanather, J.G. Csernansky and M.I. Miller. Surface area, volume and cortical thickness metrics of the cingulate gyrus in schizophrenia. Human Brain Mapping, Toronto, Canada, 2005.

6- M.F. Beg, R. L. Buckner, B. Fischl, Y. Park, E. Ceyhan, C.E. Priebe, C. Ceritoğlu, A.E. Kolasny, T. Brown, B. Quinn, P. Yu, B. Gold, J.T. Ratnanather and M.I. Miller. pattern classification of hippocampal shape analysis in a study of Alzheimer's disease. Human Brain Mapping, Toronto, Canada, June 12-16, 2005.

5- M.F. Beg, J.T. Ratnanather, L. Wang, E. Ceyhan, C.E. Priebe, C. Ceritoğlu, A. Khan, N. Lee, J.G. Csernansky, J. Morris and M.I. Miller. Metric distances between hippocampal shapes predict different rates of shape changes in dementia of Alzheimer type and nondemented subjects: A validation study. Human Brain Mapping, Toronto, Canada, June 12-16, 2005.

4- M.F. Beg, R. L. Buckner, B. Fischl, C. Ceritoğlu, A.E. Kolasny, C.E. Priebe, T. Brown, E. Ceyhan, Y. Park, B. Quinn, P. Yu, B. Gold, J.T. Ratnanather and M.I. Miller. SASHA: Semi-automated shape analysis of brain structures. Human Brain Mapping, Toronto, Canada, June 12-16, 2005.

3- G.M. Aldridge, J.T. Ratnanather, M.E. Martone, M. Terada, M.F. Beg, L. Fong, E. Ceyhan, A.E. Kolasny, T.J.A. Brown, E.L. Cochran, S.J. Tang, D.V. Pisano, M. Vaillant, M.K. Hurdal, J.D. Churchill, W.T. Greenough, M.I. Miller and M. H. Ellisman. Semi-automated shape analysis of dendrite spines from animal models of fragile-X and Parkinson's disease using large deformation diffeomorphic metric mapping. Society for Neuroscience Annual Meeting, Washington DC, USA, November 12-16, 2005.

2- L. Wang, M. Hosakere, E. Ceyhan, J.T. Ratnanather, G. Kaplan, M. Gado, J.G. Csernansky and M.I. Miller. Labeled cortical mantle distance mapping of the cingulate gyrus in schizophrenia. Human Brain Mapping, Toronto, Canada, June 12-16, 2005.

1- J.T. Ratnanather, C. Poynton, E. Ceyhan, A. Osdoit and D. Boatman. A cortical analysis of the laterality of the planum temporale in hearing, hearing-impaired and central auditory processing disorder subjects. Midwinter Meeting of the Association for Research in Otolaryngology, New Orleans, LA, USA, February 19-24, 2005.

 

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