Andrej Bugajev

Mokslinių publikacijų sąrašas

Straipsniai

Tarptautinėse duomenų bazėse referuojamuose mokslo leidiniuose paskelbti straipsniai

Web of Science (Clarivate Analytics) duomenų bazės Science Citation Index Expanded (SCIE) arba Social Science Citation Index (SSCI) referuojamuose leidiniuose, turinčiuose cituojamumo rodiklį (JIF, angl. Journal Impact Factor)

2022 - Bugajev Andrej; Kriauzienė Rima; Vasilecas Olegas; Chadyšas Viktoras. The impact of churn labelling rules on churn prediction in telecommunications. Informatica. Vilnius: Vilnius University Institute of Data Science and Digital Technologies. ISSN 0868-4952. vol. 33, iss. 2 (2022), p. 247-277. [M.kr.:N 001; N 009; T 007] [Aut.lankų sk.: 2.214]

2021 - Maceika Augustinas; Bugajev Andrej; Šostak Olga Regina; Vilutienė Tatjana. Decision tree and AHP methods application for projects assessment: a case study. Sustainability. Basel: MDPI. vol. 13, iss. 10 (2021), p. 1-33. [M.kr.:N 001; S 003; T 002; T 007] [Aut.lankų sk.: 2.357]

2020 - Maceika Augustinas; Bugajev Andrej; Šostak Olga Regina. The modelling of roof installation projects using decision trees and the AHP method. Sustainability. Basel: MDPI. ISSN 2071-1050. vol. 12, iss. 1 (2020), p. 1-21. [M.kr.:N 001; S 003; T 002; T 007] [Aut.lankų sk.: 1.500]

2020 - Kriauzienė Rima; Bugajev Andrej; Čiegis Raimondas. A three-level parallelisation scheme and application to the Nelder-Mead algorithm. Mathematical modelling and analysis. Vilnius: VGTU Press. ISSN 1392-6292. vol. 25, iss. 4 (2020), p. 584-607. [M.kr.:N 001; N 009; T 007] [Aut.lankų sk.: 1.714]

2018 - Bugajev Andrej; Šostak Olga Regina. An algorithm for modelling the impact of the judicial conflict-resolution process on construction investment. Sustainability. Basel: MDPI. Vol. 10, iss. 1 (2018), p. 1-17. [M.kr.:N 001; T 002; T 007] [Aut.lankų sk.: 1.214]

2017 - Bugajev Andrej; Čiegis Raimondas; Kriauzienė Rima; Leonavičienė Teresė; Žilinskas Julius. On the accuracy of some absorbing boundary conditions for the Schrödinger equation. Mathematical modelling and analysis : the Baltic journal on mathematical applications, numerical analysis and differential equations. Vilnius: VGTU. ISSN 1392-6292. vol. 22, iss. 3 (2017), p. 408-423. [M.kr.:N 001; T 007] [Aut.lankų sk.: 1.143]

2016 - Leonavičienė Teresė; Bugajev Andrej; Jankevičiūtė Gerda; Čiegis Raimondas. On stability analysis of finite difference schemes for generalized Kuramoto-Tsuzuki equation with nonlocal boundary conditions. Mathematical modelling and analysis : the Baltic journal on mathematical applications, numerical analysis and differential equations. Vilnius: Technika. ISSN 1392-6292. Vol. 21, no. 5 (2016), p. 630-643. [M.kr.:N 001] [Aut.lankų sk.: 1.000]

2016 - Starikovičius Vadimas; Čiegis Raimondas; Bugajev Andrej. On efficiency analysis of the OpenFOAM-based parallel solver for simulation of heat transfer in and around the electrical power cables. Informatica. Vilnius: Vilniaus universiteto Matematikos ir informatikos institutas. ISSN 0868-4952. Vol. 27, no. 1 (2016), p. 161-178. [M.kr.:N 001; N 009; T 007] [Aut.lankų sk.: 1.286]

2014 - Čiegis Raimondas; Suboč Olga; Bugajev Andrej. Parallel algorithms for three-dimensional parabolic and pseudoparabolic problems with different boundary conditions. Nonlinear analysis: modelling and control. Vilnius: Institute of Mathematics and Informatics. ISSN 1392-5113. Vol. 19, no. 3 (2014), p. 382-395. [M.kr.:N 001] [Aut.lankų sk.: 1.000]

2013 - Jankevičiūtė Gerda; Leonavičienė Teresė; Čiegis Raimondas; Bugajev Andrej. Reduced order models based on pod method for Schrödinger equations. Mathematical modelling and analysis : the Baltic journal on mathematical applications, numerical analysis and differential equations. Vilnius: Technika. ISSN 1392-6292. Vol. 18, no. 5 (2013), p. 694-707. [M.kr.:N 001] [Aut.lankų sk.: 1.000]

2012 - Čiegis Raimondas; Bugajev Andrej. Numerical approximation of one model of bacterial self-organization. Nonlinear analysis : modelling and control. Vilnius: Institute of Mathematics and Informatics. ISSN 1392-5113. Vol. 17, no.3 (2012), p. 253-270. [M.kr.:N 001; T 007] [Aut.lankų sk.: 1.286]

2012 - Bugajev Andrej; Čiegis Raimondas. Comparison of adaptive meshes for a singularly perturbed reaction - diffusion problem. Mathematical modelling and analysis : the Baltic journal on mathematical applications, numerical analysis and differential equations. Vilnius: Technika. ISSN 1392-6292. Vol. 17, no. 5 (2012), p. 732-748. [M.kr.:N 001; T 007] [Aut.lankų sk.: 1.214]

2010 - Kačeniauskas Arnas; Pacevič Ruslan; Bugajev Andrej; Katkevičius Tomas. Efficient visualization by using ParaView software on BalticGrid. Information Technology and Control. Kaunas: Technologija. ISSN 1392-124X. Vol. 39, iss. 2 (2010), p. 108-115. [M.kr.:T 007; T 009] [Aut.lankų sk.: 0.571]

Kitose tarptautinėse duomenų bazėse referuojamuose leidiniuose

2014 - Bugajev Andrej; Jankevičiūtė Gerda; Suboč Olga; Tumanova Natalija. The mathematical modelling of heat transfer in electrical cables. Electrical, control and communication engineering. Riga: Riga Technical University. ISSN 2255-9140. vol. 5 (2014), p. 46-53. [M.kr.:N 001; T 007] [Aut.lankų sk.: 0.571]

Mokslinių konferencijų darbų leidiniuose paskelbti straipsniai

Web of Science (Clarivate Analytics) duomenų bazės Conference Proceedings Citation Index (CPCI) referuojamuose konferencijų darbų leidiniuose

2014 - Čiegis Raimondas; Bugajev Andrej; Kancleris Žilvinas; Šlekas Gediminas. Parallel numerical algorithms for simulation of rectangular waveguides by using GPU. Parallel processing and applied mathematics : 10th international conference, PPAM 2013, Warsaw, Poland, September 8-11, 2013, Revised Selected Papers, Part II / Roman Wyrzykowski, Jack Dongarra, Konrad Karczewski, Jerzy Waśniewski (Eds.).. Berlin: Springer. ISBN 9783642551949. 2014, p. 301-310. [M.kr.:N 001; N 002] [Aut.lankų sk.: 0.714]

2014 - Čiegis Raimondas; Starikovičius Vadimas; Bugajev Andrej. On parallelization of the OpenFOAM-Based solver for the heat transfer in electrical power cables. Euro-Par 2014: Parallel Processing Workshops Euro-Par 2014 International Workshops, Porto, Portugal, August 25-26, 2014, Part I.. Switzerland: Springer, 2014. ISBN 9783319143248, p. 1-11. [M.kr.:N 001; T 007] [Aut.lankų sk.: 0.786]

2013 - Čiegis Raimondas; Bugajev Andrej. Parallel numerical algorithms for simulation of multidimensional ill-posed nonlinear diffusion-advection-reaction models. Applied Parallel and Scientific Computing : proceedings of 11th International Conference, PARA 2012, Helsinki, Finland, June 13-15, 2012. Berlin: Springer. ISSN 0302-9743. vol. 7782 (2013), p. 387-397. [M.kr.:N 001] [Aut.lankų sk.: 0.786]

Tik Scopus (Elsevier) duomenų bazėje referuojamuose konferencijų darbų leidiniuose

2022 - Chadyšas Viktoras; Bugajev Andrej; Kriauzienė Rima; Vasilecas Olegas. Outlier analysis for telecom fraud detection. Digital business and intelligent systems. 15th International Baltic Conference, Baltic DB&IS 2022, Riga, Latvia, July 4–6, 2022 : proceedings. Cham: Springer, 2022. ISBN 9783031098499, p. 219-231. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.929]

Recenzuojamuose konferencijų darbų leidiniuose, nereferuojamuose tarptautinėse duomenų bazėse

2016 - Bugajev Andrej; Čiegis Raimondas. The analysis of parallel OpenFOAM solver for the heat transfer in electrical power cables. Proceedings of the First PhD Symposium on Sustainable Ultrascale Computing Systems (NESUS PhD 2016) Timisoara, Romania, February 8-11, 2016 / editors: Carretero Pérez, Jesús, García Blas, Javier, Petcu, Dana. Madrid: Universidad Carlos III de Madrid, 2016. ISBN 9788460863090, p. 17-20. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.286]

2014 - Čiegis Raimondas; Starikovičius Vadimas; Bugajev Andrej. On efficiency of the OpenFOAM-based parallel solver for the heat transfer in electrical power cables. Proceedings of the first international workshop on Sustainable Ultrascale Computing Systems (NESUS 2014), August 27-28, Porto, Portugal, 2014. Madrid: Computer Architecture, Communications, and Systems Group (ARCOS), 2014. ISBN 9788461722518, p. 43-46. [M.kr.:N 001; T 007] [Aut.lankų sk.: 0.286]

2009 - Kačeniauskas Arnas; Pacevič Ruslan; Katkevičius Tomas; Bugajev Andrej. Grid visualization e-service. Proceedings of NDTCS'09: 13th international workshop on New Approaches to High-Tech: Nano-Design, Technology, Computer Simulations. 22-26 June 2009, Vilnius, Lithuania. Vol. 13 / Institute of Theoretical Physics and Astronomy of Vilnius University (Lithuania), St. Petersburg Academy of Sciences for Strength Problems (Russia). Vilnius: ITPA of Vilnius University, 2009, p. 92-98. [M.kr.:T 007; T 009] [Aut.lankų sk.: 0.500]

Nerecenzuojamuose leidiniuose paskelbti straipsniai

Konferencijų darbų leidiniuose

2008 - Bugajev Andrej. Netiesinių svyravimų tyrimas matematinio paketo „MAPLE“ terpėje. 11-osios Lietuvos jaunųjų mokslininkų konferencijos „Mokslas – Lietuvos ateitis“ 2008 metų teminės konferencijos MATEMATIKA (2008 m. kovo 27–28 d.) straipsnių rinkinys. Vilnius: Technika, 2008. ISBN 9789955283003, p. 153-158. [M.kr.:N 001] [Aut.lankų sk.: 0.429]

Tezės

Tarptautinėse duomenų bazėse referuojamuose leidiniuose publikuotos konferencijų pranešimų tezės

2023 - Kriauzienė Rima; Bugajev Andrej. Constructing production planning tasks: A "Teltonika" case study. DAMSS 2023: 14th conference on data analysis methods for software systems, Druskininkai, Lithuania, November 30 - December 2, 2023. Vilnius: Vilniaus universiteto leidykla, 2023. ISBN 9786090709856, p. 40. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.071]

Kituose leidiniuose publikuotos konferencijų pranešimų tezės

2023 - Bugajev Andrej; Kriauzienė Rima. The investigation of data temporal delays impact on classification performance for churn prediction in telecommunications. 26th international conference on Mathematical Modelling and Analysis [MMA2023], May 30–June 2, 2023, Jurmala, Latvia : abstracts. Riga: University of Latvia, 2023. ISBN 9789934360114, p. 9. [M.kr.:N 001; T 007] [Aut.lankų sk.: 0.071]

2022 - Bugajev Andrej; Kriauzienė Rima. The role of inaccurate assumptions for churn prediction in telecommunications. Mathematical Modelling and Analysis [MMA2022] : 25th international conference, May 30 - June 2, 2022, Druskininkai, Lithuania : abstracts. Vilnius: Vilnius Gediminas Technical University, 2022. ISBN 9786094762987, p. 1. [M.kr.:N 001; T 007] [Aut.lankų sk.: 0.071]

2019 - Bugajev Andrej; Suboč Olga; Baltrėnas Pranas; Kolodynskij Vitalij. The heat transfer modelling in a bioreactor. Mathematical modelling and analysis [MMA2019] : 24th international conference, May 28–31, 2019, Tallinn, Estonia : abstracts. Tallinn: Tallinn University of Technology, 2019. ISBN 9789949834396, p. 11. [M.kr.:N 001] [Aut.lankų sk.: 0.071]

2019 - Kriauzienė Rima; Bugajev Andrej; Čiegis Raimondas. The analysis and application of a three-level parallelisation scheme. Mathematical Modelling and Analysis [MMA2019] : 24th international conference, May 28-31, 2019, Tallinn, Estonia : abstracts. Tallinn: Institute of Cybernetics, Tallinn University of Technology, 2019. ISBN 9789949834396, p. 43-44. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.143]

2019 - Šlekas Gediminas; Čiegis Raimondas; Bugajev Andrej; Kancleris Žilvinas Andrius. Impact of velocity overshoot phenomena on performance of photoconductive terahertz antenna. Mathematical Modelling and Analysis [MMA2019] : 24th international conference, May 28-31, 2019, Tallinn, Estonia : abstracts. Tallinn: Institute of Cybernetics, Tallinn University of Technology, 2019. ISBN 9789949834396, p. 73. [M.kr.:N 001; N 002] [Aut.lankų sk.: 0.071]

2018 - Kriauzienė Rima; Bugajev Andrej; Čiegis Raimondas. Three level parallelisation scheme for optimisation problems involving simultaneous calculations of multiple differential equations. DAMSS 2018 : 10th international workshop on "Data analysis methods for software systems", Druskininkai, Lithuania, November 29 – December 1, 2018 : [abstract book]. Vilnius: Vilnius University Press, 2018. ISBN 9786090700433, p. 48. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.071]

2018 - Kriauzienė Rima; Bugajev Andrej; Čiegis Raimondas. A three-level parallelisation algorithm for optimisation problems. Mathematical Modelling and Analysis [MMA2018] : 23rd international conference, May 29-June 1, 2018, Sigulda, Latvia : abstracts. Riga: University of Latvia, 2018. ISBN 9789934195174, p. 41. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.071]

2017 - Bugajev Andrej; Čiegis Raimondas; Leonavičienė Teresė. The parallel optimization algorithm for problems involving simultaneous solution of different differential equations. Mathematical Modelling and Analysis [MMA2017] : 22nd international conference, May 30-June 2, 2017, Druskininkai, Lithuania : abstracts. Vilnius: Technika, 2017. ISBN 9786094760228, p. 9. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.071]

2017 - Kriauzienė Rima; Bugajev Andrej; Čiegis Raimondas. The new parallel multilevel tool for implementation of applied optimization algorithms. 9th International workshop on Data Analysis Methods for Software Systems (DAMSS), Druskininkai, Lithuania, November 30 - December 2, 2017. Vilnius: Vilnius University, 2017. ISBN 9789986680642, p. 28-29. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.143]

2016 - Kriauzienė Rima; Bugajev Andrej; Čiegis Raimondas; Leonavičienė Teresė; Žilinskas Julius; Jankevičiūtė Gerda. Optimization of efficient absorbing boundary conditions for schrödinger equation. Data analysis methods for software systems : 8th international workshop on data analysis methods for software systems, Druskininkai, December 1-3, 2016 : [abstract]. Vilnius: Vilniaus universiteto leidykla, 2016. ISBN 9789986680611, p. 30-31. [M.kr.:N 001] [Aut.lankų sk.: 0.143]

2016 - Bugajev Andrej; Kriauzienė Rima; Čiegis Raimondas. On the accuracy of some absorbing boundary conditions for the Schrodinger equation. Mathematical Modelling and Analysis (MMA2016) : 21st international conference, June 1-4, 2016 in Tartu, Estonia : abstracts / Institute of Mathematics and Statistics of the University of Tartu, European Consortium for Mathematics in Industry, Vilnius Gediminas Technical University, Estonian Mathematical Society. Tartu: University of Tartu, 2016. ISBN 9789949918096, p. 11. [M.kr.:N 001; N 009] [Aut.lankų sk.: 0.071]

2016 - Leonavičienė Teresė; Bugajev Andrej; Jankevičiūtė Gerda; Čiegis Raimondas. On stability analysis for Kuramoto-Tsuzuki equation with nonlocal boundary conditions. Mathematical Modelling and Analysis (MMA2016): 21st international conference, June 1-4, 2016 in Tartu, Estonia : abstracts / Institute of Mathematics and Statistics of the University of Tartu, European Consortium for Mathematics in Industry, Vilnius Gediminas Technical University, Estonian Mathematical Society. Tartu: Institute of Mathematics and Statistics of the University of Tartu, 2016. ISBN 9789949918096, p. 46. [M.kr.:N 001] [Aut.lankų sk.: 0.071]

2015 - Bugajev Andrej; Čiegis Raimondas; Starikovičius Vadimas. The analysis of parallel solver for the heat transfer in electrical power cables. Mathematical Modelling and Analysis (MMA2015) : 20th international conference, May 26-29, 2015, Sigulda, Latvia : abstracts. Riga: University of Latvia, 2015. ISBN 9789984459998, p. 11. [M.kr.:N 001; T 007] [Aut.lankų sk.: 0.071]

2014 - Bugajev Andrej; Tumanova Natalija; Suboč Olga. The robust finite volumes approach for complicated geometry of domains with discontinuous coefficients of material properties. Mathematical modelling and analysis : 19th international conference, May 26-29, 2014, Druskininkai, Lithuania : abstracts. Vilnius: Technika, 2014. ISBN 9786094576928, p. 13. [M.kr.:N 001; T 007] [Aut.lankų sk.: 0.071]

2014 - Jankevičiūtė Gerda; Tumanova Natalija; Meilūnas Mečislavas; Bugajev Andrej. Some applications of numerical models of temperature distribution in electrical power cables and it's surrounding area. 6th international workshop : Data analysis methods for software systems. Druskininkai, Lithuania, Hotel “Europa Royale”, December 4–6, 2014. Vilnius: Vilniaus universitetas, 2014. ISBN 9789986680505, p. 27. [M.kr.:N 001] [Aut.lankų sk.: 0.071]

2014 - Čiegis Raimondas; Starikovičius Vadimas; Bugajev Andrej. On parallelization of the openFoam-based solver for the heat transfer in electrical power cables. Mathematical modelling and analysis : 19th international conference, May 26-29, 2014, Druskininkai, Lithuania : abstracts. Vilnius: Technika, 2014. ISBN 9786094576928, p. 15. [M.kr.:N 001] [Aut.lankų sk.: 0.071]

2012 - Čiegis Raimondas; Bugajev Andrej. Numerical algorithms for simulation of pattern formation in bacterial self-organization models. Mathematical Modelling and Analysis (MMA2012) : 17th international conference, June 6-9, 2012, Tallinn, Estonia : abstracts (special issue) / The European Consortium for Mathematics in Industry (ECMI), Tallinn University of Technology, Estonian Operational Research Society. Tallinn: Tallinn University of Technology, 2012. ISSN 1392-6292, p. 32. [M.kr.:N 001] [Aut.lankų sk.: 0.071]

2012 - Bugajev Andrej; Čiegis Raimondas. Adaptive meshes for problems with boundary layers. Mathematical Modelling and Analysis (MMA2012) : 17th international conference, June 6-9, 2012, Tallinn, Estonia : abstracts (special issue) / The European Consortium for Mathematics in Industry (ECMI), Tallinn University of Technology, Estonian Operational Research Society.. Tallinn: Tallinn University of Technology, 2012. ISSN 1392-6292, p. 27. [M.kr.:N 001] [Aut.lankų sk.: 0.071]

Kitų konferencijų pranešimų tezės

2018 - Kriauzienė Rima; Bugajev Andrej; Čiegis Raimondas. Numerical analysis and optimization of parallel algorithms for problems with big computational costs. 3rd NESUS Winter School and PhD Symposium 2018, 22nd-25th January 2018, Zagreb, Croatia. Zagreb: Ruđer Bošković Institute. vol. 1, no. 1 (2018), p. 10. [M.kr.:N 009] [Aut.lankų sk.: 0.071]

2013 - Bugajev Andrej; Čiegis Raimondas; Šlekas Gediminas; Kancleris Žilvinas Andrius. The analysis of 3D finite difference time domain calculations using CUDA. 18th international conference of mathematical modelling and analysis; Fourth international conference of approximation methods and orthogonal expansions (MMA2013 & AMOE2013) : Tartu, Estonia, May 27-30, 2013 : abstracts. Tartu: 2013, p. 1. [M.kr.:N 002] [Aut.lankų sk.: 0.071]

2013 - Bugajev Andrej; Čiegis Raimondas; Šlekas Gediminas; Kancleris Žilvinas. The analysis of 3D finite difference time domain calculations using CUDA. Abstracts of 18th International Conference on Mathematical Modelling and Analysis (MMA'2013) & 4th International Conference on Approximation Methods and Orthogonal Expansions (AMOE'2013), May 27-30, 2013, Tartu, Estonia. Tartu: University of Tartu, 2013, p. 21. [M.kr.:N 001; T 007] [Aut.lankų sk.: 0.071]

Kitos knygos ir jų dalys, disertacijos

2016 - Jankevičiūtė Gerda; Čiegis Raimondas; Tumanova Natalija; Bugajev Andrej. Numerical simulation of heat transfer in underground electrical cables. Progress in industrial mathematics at ECMI 2014 : Conference proceedings. Cham: Springer. ISBN 9783319234120. 2016, p. 1111-1119. [M.kr.:N 001; T 001] [Aut.lankų sk.: 0.643]

2015 - Bugajev Andrej. The Investigation of Efficiency of Physical Phenomena Modelling Using Differential Equations on Distributed Systems. Sauletekio al. 11, LT-10223 Vilnius: Vilniaus Gedimino technikos universiteto leidykla ,,Technika‘‘,, 2015. [M.kr.:N 001; N 009; T 007] [Aut.lankų sk.: 10.000]