Publications

Selected Major Publications:

• K. Tsvetkova, M. Tsvetkov, N. Kirov, D. Kalaglarsky, H. Edelmann, U. Heber, On some Bamberg wide-field plate catalogues recently incorporated into WFPDB, Astronomical and Astrophysical Transactions - Journal of the Eurasian Astronomical Society, vol.31, 2018 (in print) [pdf]
  
• A Radenski, T. Gurov, K. Kaloyanova, N. Kirov, M. Nisheva, P. Stanchev, and E. Stoimenova, Big Data Techniques, Systems, Applications, and Platforms: Case Studies from Academia, Preproceedings of the Federated Conference on Computer Science and Information Systems, FedCSIS 2016,  893–898. [pdf]
• N. Kirov, The Bulgarian Collegiate Programming Contest, Proceedings of the 12th Annual International Conference on Computer Science and Education in Computer Science, July 1-2 in Fulda, and July 3-4 in Nuremberg, Germany (2016). [pdf]
  
• N. Kirov, M. Tsvetkov, K. Tsvetkova, WFPDB: Software for Time and Coordinates Conversions, Proceedings of the IX Bulgarian-Serbian Astronomical Conference: Astroinformatics, (IX BSACA) Sofia, Bulgaria, July 2-4, 2014, Editors: M. K. Tsvetkov, M. S. Dimitrijevi´c, O. Kounchev, D. Jevremovi´c and K. Tsvetkova, Publ. Astron. Soc. ”Rudjer Boˇskovi´c” No 15, 2015, 43-48. [pdf]
• N. Kirov, A test system for checking and evaluation the students' programming knowledge, In: Proceedings of the 10th Annual International Conference on Computer Science and Education in Computer Science, 4–7 July 2014, Albena, Bulgaria (ISSN 1313-8624), 125-134 [pdf].
• K. Tsvetkova, M. Tsvetkov, N. Kirov, D. Kalaglarski, The Last Plate Observations with Rozhen Observatory Schmidt Telescope,   Proceedings of the VIII Serbian-Bulgarian Astronomical Conference (VIII SBAC), Leskovac, Serbia, May 8-12, 2012, Editors: M. S. Dimitrijević and M. K. Tsvetkov, Publ. Astron. Soc. “Rudjer Bošković” No 12, 2013, 359-365. [pdf]
• N. Kirov, L. Peycheva, Information Technology for Preserving the Bulgarian Folklore Heritage, In: Proceedings of the 9th Annual International Conference on Computer Science and Education in Computer Science, 29-30 June 2013 in Fulda, and 1-2 July 2013 in Wurzburg, Germany. [pdf]
• N. Kirov, A System for Assessing the Knowledge and Skills of Students in Computer Programming, In: Proceedings of the 9th Annual International Conference on Computer Science and Education in Computer Science, 29-30 June 2013 in Fulda, and 1-2 July 2013 in Wurzburg, Germany. [pdf]
• N. Kirov, M. Tsvetkov, K. Tsvetkova, Technology for digitization of astronomical photographic plates, In: Proceedings of the 8th Annual International Conference on Computer Science and Education in Computer Science, 5–8 July 2012, Boston, USA, 109-114. [pdf]
  
• K. Kirov, N. Kirov, Folklore Songs Digital Library and Keyword-based Search Engine, Serdica Journal of Computing, 6 (3), (2012), 163-174. [pdf]
• K. Tsvetkova, M. Tsvetkov, N. Kirov, P. Boehm, M. Steinmetz, R. Arlt, H. Enke, R. von Berlepsch, Potsdam Astronomical Photographic Plate Library, Serdica Journal of Computing, 6 (1), (2012), 35-46 [pdf].
• N. Kirov, M. Tsvetkov, K. Tsvetkova, Software Tools for Digitization of Astronomical Photographic Plates, Serdica Journal of Computing, 6 (1), (2012), 67-76 [pdf].
• M. Tsvetkov, K. Tsvetkova, N. Kirov, Technology for scanning of astronomical photographic plates, Serdica Journal of Computing, 6 (1), (2012), 77-88 [pdf].
• N. Kirov, M. Tsvetkov, K. Tsvetkova, D. Kalaglarsky, Brashear Plate Catalogues in the Wide-Field Plate Database, In: Proceedings of the VII Bulgarian-Serbian Astronomical Conference (VII BSAC), Chepelare, Bulgaria, June 1-4, 2010, Editors: M. K. Tsvetkov, M. S. Dimitrijević, K. Tsvetkova, O. Kounchev, Ž. Mijajlović, Publ. Astron. Soc. “Rudjer Bošković” No 11, 2012, 147-152. . [pdf | ADS]
• L. Peycheva, N. Kirov, Bulgarian Folk Songs in a Digital Library, In: Proc. Int. Conf. Digital Preservation and Presentation of Cultural and Scientific Heritage, 11-14 September 2011, Veliko Tarnovo, Ed. R Pavlov, P. Stanchev, ISSN 1314-4006, 60-68 (2011). [pdf]
  
• K. Kirov, N. Kirov, Digital library and search engine of Bulgarian folklore songs, Proc. 7 Annual International Conference on Computer Science and Education in Computer Science, (2011), 245-254. [pdf]
• N. Kirov, Astroinformatics and Digitization of Astronomical Heritage, Review of the National Center for Digitization, 19 (2011), 7-10. [pdf]
  
• N. Kirov, Digitization of Bulgarian folk songs with music, notes and text, Review of the National Center for Digitization, 18 (2011), 35-41. [pdf]
• L. Peycheva, N. Kirov, M. Nisheva-Pavlova, Information Technologies for Presentation of Bulgarian Folk Songs with Music, Notes and Text in a Digital Library, Proc. of Fourth Int. Conf. "Information Systems & Grid Technologies", Sofia, Bulgaria, May 28–29, 2010, 218-224. [pdf]
• N. Kirov, O. Kounchev, M. Tsvetkov, Astroinformatics: Image Processing and Analysis of Digitized Astronomical Data with WEB-based Implementation, Proceedings of the 6th Annual International Conference on Computer Science and Education in Computer Science, 26-27 June 2010 in Fulda and 28-29 June 2010 in Munich, Germany, 176-181. [pdf]
• A. Andreev, N. Kirov, Word Image Matching Based on Hausdorff Distances, Proc. 10th International Conference on Document Analysis and Recognition (2009), 396-400. [pdf]
• A. Andreev, N. Kirov, Hausdorff distances for searching in binary text images, Serdica Journal of Computing, 3 (1), (2009), 23-46. [pdf]
• N. Kirov, A Software Tool for Searching in Binary Text Images, Review of the National Center for Digitization, 13 (2008),  9-16. [pdf]
• A. Andreev, N. Kirov, Text Search in Document Images Based on Hausdorff Distance Measures, Proc. International Conference on Computer Systems and Technologies - CompSysTech’08, June 12-13,  2008, Technical University - Gabrovo, Bulgaria [pdf]
• N. Kirov, Words Retrieval from Text Images, Proceedings of the Fourth International Workshop "Computer Science and Education", June 6-8, 2008, Borovetz-Sofia, Bulgaria, 102-107 [pdf].
• A. Andreev, N. Kirov, Some Variants of Hausdorff Distance for Word Matching, Review of the National Center for Digitization, 12 (2008),  3-8. [pdf]
• P. Assenova, N. Kirov, An Approach to a Bachelor program on Network Technologies, Mathematics and Education in Mathematics, 2008, 253-260.
• J. Djounova, K. Kirov, N. Kirov, Database Structure for Radiation Incidents and for Treatment of Affected People, Scientific Support for the Decision Making in the Security Sector, Editors: O. Kounchev, R. Willems, V. Shalamanov and Tsv. Tsachev. Edited in: NATO Science for Peace and Security Series - D: Information and Communication  Security, vol. 12, 2007, pp. 138-143.
• N. Kirov, P. Assenova, Student's Itineraries Through Bachelor Degree Programs in NBU, Proceedings of the Third International Workshop "Computer Science and Education", June 9-11, 2007, Borovetz-Sofia, Bulgaria, 57-66. [pdf]
• A. Andreev, N. Kirov, Word image matching in Bulgarian historical documents, Review of the National Center for Digitization 8 (2006), 29-35 [pdf]
• N. Kirov, M. Krastanov, Numerical Solutions of ODEs using Volterra Series, Proceedings of the Second International Workshop "Computer Science and Education", June 4-6, 2006, Borovetz-Sofia, Bulgaria, 105-111. [pdf]
• K. Ivanov, N. Kirov, N. Yanev, Optimal distribution of the parties mandates for 40. Parliament among electoral districts, Math. and Math. Education, 2006, (Proc. Thirtieth Spring Conf. of the Union of Bulgarian Mathematicians, Borovets, April 5-8, 2006), 70-81 (in Bulgarian). [pdf]
• A. Andreev, N. Kirov, Hausdorff Distance and Word Matching, Proceedings of the International Workshop "Computer Science and Education", June 3-5, 2005, Borovetz-Sofia, Bulgaria, 19-28. [pdf]
• N. Kirov, M. Krastanov, Volterra Series and Numerical Approximations of ODEs, In: Numerical Analysis and Its Applications,  Zhilin Li, L. Vulkov, J. Waśniewski eds., Lecture Notes in Computer Science 3401, 2005, 337-344.
• N. Kirov, M. Krastanov, Skiba Points for Optimal Investment Strategies, In: Discrete Mathematics and Applications, Sl. Strakov, K. Denecke, eds., 2005, Proc. 7. Intern. Conf. Discrete Math. & Appl., June 17-20, 2004, Blagoevgrad, Bulgaria, 41-48.
• N. Kirov, M. Krastanov, Higher Order Approximations of Affinely Controlled Nonlinear Systems,  In: Large-Scale Scientific Computing, Springer Lecture Notes in Computer Science, I. Dimov, I. Lirkov, S. Margenov, J. Wasniewki, P. Jalamov eds., Springer Lecture Notes in Computer Science 2907, 230-238, 2004. [ps | pdf]
• N. Kirov, Teaching Programming in Bulgarian Universities. Math. and Math. Education, 2001, (Proc. Thirtieth Spring Conf. of the Union of Bulgarian Mathematicians, Borovets, April 8-10, 2001).
• N. Kirov, K. Nikolova, Multiobjective Approach of Water Resources Allocation, Water Problems, 28, 1996, 21-28 (in Bulgarian).
• M. Krastanov, N. Kirov, Dynamic Interactive System for Analysis of Linear Differential Inclusions, In: Modeling Techniques for Uncertain Systems, eds. A. Kurzhanski, V. Veliov, Birkhaeuser, 1994, 123-130. [ps | pdf]
• N. Kirov, Chaotic Attractor Reconstruction and Applications to Variable Stars, Proc. 5-th ESO/ST-ECF Data Analysis Workshop, Garching, 26-27 April, 1993, ed. P.J. Grosbol and R.C.E. de Ruijsscher, ESO Conference and Workshop Proceedings No. 47, 185-190. [pdf  | ADS]
• P. Kenderov, N. Kirov, A Dynamical System Approach to the Polygonal Approximation of Plane Convex Compacts, J. Approx. Theory 74, No 1, (1993) 1-15. [Abstract | ps | pdf]]
• N. Kirov, A. Antov, V. Genkov, A Software System for Reduction and Visualization of Astronomical Photoelectric Data, Compt. rend. Acad. bulg. Sci. 44, No 11, (1991) 5-8. [pdf]
• A. Antov, V. Genkov, R. Konstantinova-Antova, N. Kirov, Simultaneous Photoelectric Observations of AD Leonis, Commission 27 of the I.A.U., Information Bulletin on Variable Stars, Budapest, 1991, 3577. [pdf | ADS]
• E. Kelevedzhiev, N. Kirov, Interactive Optimization Software System, In: Numerical Methods of Nonlinear Programming and their Implementations, eds. C. Richter, H. Hollatz, D. Palaschke, Akademie Verlag, 1991, (Math. Res. vol. 60, Proc. Opti-Soft '89, Quedlinburg, July 7-14, 1989), 55-70.
• E. Kelevedzhiev, N. Kirov, Interactive Optimization Systems, IIASA Working Paper 1989, WP-89-007, 1-28.
• N. Kirov, Generic Frechet Differentiability of Convex Operators, Proc. Amer. Math. Soc. 94, (1985) 97-102. [PAMS - pdf]
• N. Kirov, Generalized Monotone Mappings and Differentiability of Vector-valued Convex Mappings, Serdica 9, (1983) 263-274. [Serdica - pdf]
• N. Kirov, Differentiability of Convex Mappings and Generalized Monotone Mappings, Comp. rend. Acad. bulg. Sci. 34, (1981) 1473-1475. [pdf]

[citations]