Ovidiu Bagdasar - Our staff - University of Derby

About

Module Leader

Computational Mathematics (Level 4 – Computer Science)
Calculus (Level 4, Mathematics)
Modelling with Differential Equations (Level 6 - Mathematics)
Optimization (Level 7, MSc Computational Mathematics)

Programme Leader: MSc Computational Mathematics, MSc Big Data Analytics

Maths&Computing: Erasmus+ Departmental Coordinator

Placement Tutor: Mathematics students (2012-)

International Recruitment Tutor: Mathematics Programs

Outreach coordinator: Mathematics (selection and training of students for outreach activities)

PhD Students: Andy Baker, Craig Bower, Sam O'Neill

Motto: "All what is correct thinking is either mathematics or feasible to be transposed in a mathematical model." (G. Moisil 1906 - 1973)

Professional interests

Academic interests:

Research in Computational Mathematics
Communicate Mathematics to a wider audience
Use research to transform the student experience
Inspire students to engage and improve their performance
Use emerging technologies to transform learning, teaching and assessment
Develop national and international partnerships for research and student mobility (e.g. Erasmus+)
Generate results with significant theoretical and applicable implications
Develop a research team to work on Recurrences and Optimization

Research topics:

Recurrent sequences and their applications
Counting problems and Combinatorics
Optimisation and Convex Analysis
Mathematical Inequalities
Mathematical modelling

Income generation and Research projects

1. URSS (Undergraduate Research Scholarship Scheme)

Project 2017 - 041: "On the geometry and applications of complex recurrent sequences" £2200 (March 2017)

2. PN-III-P2-2.1-PED-2016-1835: Computational Models for the reproduction of ceramic colors (co-investigator, 103K Euros) (August 2017)

3. DANCOP (with Outreach, School Liaison): £9420 (March 2018)

4. OCIS (On-Line Campus Internship Scheme): 120 posts for three students (March 2018)

5. Newton and IMU proposals on Water Management Optimisation with collaborators from South Africa (decision pending)

Membership of professional bodies

Memberships

ISDE - International Society of Difference Equations (2017-)
AMS - American Mathematical Society - Member (2014-)
KMS - Korean Mathematical Society (2014-)
Fellow of HEA - Higher Education Academy (2013-)
SSMR - Romanian Mathematical Society (2013-)
IMA - Institute of Mathematics and its Applications - Member (2012-)

Collaborations

Reviewer for Mathematical Reviews
Reviewer for the Journal of Number Theory
Reviewer for the Journal of Integer Sequences
Editor for the Octogon Mathematical Magazine, Romania
Member of the Smart Systems Research Group at the University of Derby.
External collaborator of the Analysis and Optimization Research Group, UBB Cluj, Romania

Qualifications

2012 – 2016: BA, Pastoral Orthodox Theology, UAB, Alba Iulia, RO
2012 – 2013: PG Cert HE, University of Derby
2012 – Post-graduate Research Supervisor
2007 – 2015: PhD, Pure Mathematics, Babes-Bolyai University, Cluj Napoca, RO
2007 – 2011: PhD, Applied Mathematics, University of Nottingham, UK
2007 – 2010: EST Marie Curie Fellow, University of Nottingham, UK
2006 – 2007: MSc (distinction), Real and Complex Analysis (10/10)
2002 – 2006: BSc Hons (1st), Mathematics, UBB, Cluj, RO (9.97/10)
QTS: July 2006- Present (Qualified Mathematics Teacher, all levels)

Recent conferences

Invited lectures and seminars

15 March 2018: Edge Hill University (talk: Traffic Assignment Problem: On the interplay between Optimization and Equilibrium Problems)
13 February 2018: International Schoool of Bucharest (talk: Problem Solving: The mathematical key to securing a job)
23 May 2017: Optimum versus equilibrium solutions in traffic flow management, MOS UBB Cluj (Research centre for Modelling, Optimization and Simulation)
12-13 October 2017: Kishinev State University, Moldova (Complex recurrent sequences: Techniques, Patterns and Conjectures) (+Prometeu Prim High School talk)
20-22 February 2017: ICMMCMSE'17, Alagappa University, India (Keynote)
12 December 2015: IMA East Midlands branch talk: "Mathematics of beauty: On infinity, fractals and recurrent sequences", Nottingham Trent University
2 April 2015: UBB Cluj, Romania, Faculty of Mathematics:

Mechanics and Astronomy Research Seminar (30 min): "The role of lubrication in cell adhesion: deterministic results and simulations for a simplified theoretical cell model"
Complex Analysis Research Seminar (30 min): "On the geometric patterns produced by Horadam sequences in the complex plane"
Analysis and Optimization Research Seminar (60 min): Extremal properties of generalized convex vector-valued functions

7 March 2015: Early Career Mathematicians' Spring Conference, University of Sheffield: How to be happy while solving (other people's) problems
20 February 2015: TCS Research Group, Loughborough University: "Complex Horadam sequences: periodicity, enumeration and applications"
16 February 2015: Guest Lecture for Subjects in Computer Science, University of Derby: "On the Visualisation of Number Sequences"
22 August 2014: Hanbat National University, South Korea: "Mathematics of beauty: on recurrences and emotions"
30 May 2014: UBB Cluj, Romania, Faculty of Mathematics, Interdisciplinary seminar: "On the Mathematics of beauty"
29 May 2014: UBB Cluj, Romania, Faculty of Mathematics, "On some properties and applications of Horadam sequences"
29 October 2013: Open University Mathematics Seminar, "The geometric patterns of complex Horadam sequences"
26 April 2013: SSMI, "Applied Mathematics: from life to formulas"

Conference presentations and posters

16-20 December 2017: 4^th Conference on Optimization Methods and Software (talk: Transportation management: On the interplay between Optimization and Equilibrium problems) (with N. Popovici and S. Berry), Cuba
25-28 September 2017: FGI 2017 (talk: Transportation management: methods and algorithms for solution) (with N. Popovici and S. Berry), Padeborn, Germany
31 July-4 August 2017: TREPAM'17 (talk: On the ratios and geometric boundaries of complex Horadam sequences and their generalizations), UAB, Romania
24-28 July 2017: 23rd ICDEA (talk: On the dynamical properties of certain complex recurrent sequences), Timisoara, Romania
4-6 April 2017: New results and conjectures on 2-partitions of multisets, 7^th ICSMAO (UAE)
25-29 August 2016: XIII^thColloq Fr-Ro (talk: Extremal properties of explicitly quasiconvex vector functions)
19-22 May 2016: XX^thSSMR (talk: On the geometry of linear recurrences in the complex plane)
22-23 March 2016: 1^st TCDM (talk:"On the number of tuples with the same lcm")
17-20 September 2015: ICTAMI 2015, (Talk: "On Arithmetic Functions and Integer Tuples with the Same LCM")
6-10 July 2015: 25th BCC (Talk: "Enumeration of periodic Horadam sequences")
13-21 August 2014: ICM 2014, Seoul, Korea, On the enumeration of periodic generalized Horadam sequences (talk)
6-11 August 2014: ANTS XI, Korea, On certain computational and geometric properties of Horadam orbits (poster)
26-28 March 2014: UKSim2014, Cambridge, UK (Talk, Session Chair)
1-5 July 2013: 24th BCC (Talk: "Enumeration of periodic Horadam sequences")
1-7 July 2010: ESOF 2010 (European Science Open Forum), Italy (poster)

Workshops

26-28 March 2015: Chair of "The Knowledge Triangle: Mathematics Applied to Industry", within the Exploratory Workshop on "Internationalization of Higher Education: Challenges and Rewards", Alba Iulia, Romania
11 April 2018: Organiser of the UoD Workshop on "Current Issues in Mathematical Education"

Experience in industry

2014: Bosch Thermotechnology (VSM - Value Stream Mapping)

2017: IPEC Alba Iulia (Ceramics coloring project)

2017: UPN (Logistics, Maths Group Proect at UoD)

2018: Maple, Vretta (Mathematical Education Software)

International experience

New Erasmus+ links:

1. Babes-Bolyai University, Cluj Napoca, Romania (Mathematics and Computer Science): Erasmus+@UBB (Dec 2014, Lead Dr. Ovidiu Bagdasar)

2. "1 DECEMBRIE 1918" University, Romania (Computer Science, Mathematics, Business): Erasmus+@UAB (Dec 2014, Lead Dr. Ovidiu Bagdasar)

3. Bogazici University, Istanbul, Turkey (Mathematics): Erasmus+@Bogazici (Nov 2015, Lead Dr. Ovidiu Bagdasar)

4. University of Maribor, Slovenia (Mathematics): Erasmus+@Maribor (Dec 2015, Lead Dr. Ovidiu Bagdasar)

5. Universidade da Beira Interior, Portugal (Computer Science and Mathematics) Erasmus+@UBI (Jul 2017, Lead Dr. Virginia Franquerra)

6. University of Catania, Italy (Mathematics and Statistics, ICT) Erasmus+@Catania (Mar 2018, Lead Prof. Antonio Liotta)

7. University of Calabria, Italy (Mathematics and Statistics, ICT) Erasmus+@Calabria (Mar 2018, Lead Prof. Antonio Liotta)

Erasmus+ visits:

March 2015: UAB Romania, Alba Iulia, Romania
May 2015: UBB Cluj, Romania
January 2016: UAB Romania, Alba Iulia, Romania (visited first Erasmus+ Maths student from Derby)
May 2016: UBB Cluj, Romania
January 2017: UBB Cluj, Romania
May 2017: UAB Alba Iulia, Romania
January 2018: UAB Alba Iulia, Romania

Erasmus+ guests:

May 2015 - Professor Nicolae Popovici - UBB Cluj, Romania
March 2016 - Dr Ioan Lucian Popa, UAB Alba Iulia, Romania
May 2016 - Professor Nicolae Popovici - UBB Cluj Romania
June 2016 - Dr Zalan Bodo - UBB Cluj Romania
March 2017 - Dr Ioan Lucian Popa, UAB Alba Iulia, Romania
May 2017 - Professor Nicolae Popovici - UBB Cluj Romania
September 2018: Professor Valeriu Anisiu

Research stages:

September 2016: Research visit to UAB and IPEC Alba Iulia, RO
February 2017: Research visit to the Ramanujan Centre for Higher Mathematics, Alagappa University, India
November 2017: Research visit to IPEC Alba Iulia as part of the Research Project CMRCC

Conference Organisation:

ICTAMI'15, UAB - Romania
1st TCDM'16, University of Derby, UK
ICMMCMSE'17, Alagappa University, India (proceedings editor)
TREPAM'17, UAB University, Romania (organising committee)
2nd TCDM'18, University of Derby, UK (co-chair)

Recent publications

Books

V. Lowndes, O. B., S. Berry: Chapter 6 "Case Studies: Using Heuristics" in Guide to Computational Modelling for Decision Processes: Theory, Algorithms, Techniques and Applications (Springer, 2017)
O. B., N. Popovici, S. Berry: Sect. 7.3 "Transportation management: methods and algorithms" in Guide to Computational Modelling for Decision Processes: Theory, Algorithms, Techniques and Applications (Springer, 2017)
O. B., Concise Computer Mathematics: Tutorials on Theory and Problems, Springer Briefs in Computer Science, 2013.

Journal articles

T. E. Hunt, O. B., D. Sheffield, M.B. Schofield: Assessing domain specificity in the measurement of mathematics calculation anxiety (submitted, under review, 2018)
D. Andrica, O. B., On cyclotomic polynomial coefficients (submitted, under review, 2018)
D. Andrica, O. B., On some results concerning the polygonal polynomials (submitted, under review, 2018)
D. Andrica, O. B., On integral formulae for the coefficients of a general family of complex polynomials (submitted, under review, 2018)
I-L. Popa, T. Ceausu, O. B., Characterizations of generalized exponential trichotomies for linear discrete-time systems, (submitted, under review, 2018)
O. B., S. Berry, S. O'Neill, N. Popovici, R. Raja, Traffic Assignment: Methods and Simulations for an Alternative Formulation of the Fixed Demand Problem (submitted, under review, 2018)
A. Pratap, R. Raja, C. Sowmiya, O. B., J. Cao, G. Rajchakit, Global projective lag synchronization of fractional order memristor based BAM neural networks with mixed time varying delays, Asian J Control (accepted 2018)
A. Pratap, R. Raja, C. Sowmiya, O. B., J. Cao, G. Rajchakit, Robust generalized Mittag-Leffler synchronization of fractional order neural networks with discontinuous activation and impulses, Neural Networks (accepted 2018)
O. B., N. Popovici: Unifying local-global type properties in vector optimization, Journal of Global Optimization (accepted 2018)
O. B., N. Popovici: Extremal properties of generalized convex vector functions, J Nonlinear Convex Analysis, Vol. 18 (12) (2017)
O. B., P.J. Larcombe, On the masked periodicity of Horadam sequences: A generator-based approach, Fibonacci Quart. (2017)
O. B., I-L. Popa, On the periodicity of certain non-homogeneous complex linear recurrences, Electron. Notes Discrete Math, Vol. 56, 7-13 (2016)
I-L. Popa, T. Ceausu, O. B., Characterizations of generalized exponential trichotomies for linear discrete-time systems, Electron. Notes Discrete Math, Vol. 56, 65-70 (2016)
O. B., P.J. Larcombe and, A. Anjum, On the structure of periodic complex Horadam sequences, Carpathian J Math, (2016)
O. B., N. Popovici, Local maximum points of explicitly quasiconvex functions, Optimization Letters, Vol. 9(4), 769-777 (2015)
O. B., On some functions involving the lcm and gcd of integer tuples, Appl Math Inform and Mech, Vol 6(2), 91-100 (2014)
O. B. and P.J. Larcombe, On the characterization of periodic Horadam sequences, J Differ Equ App, 1069-1090 (2014)
P.J. Larcombe, O. B., and E.J. Fennessey, On a Result of Bunder Involving Horadam Sequences: A New Proof, Fibonacci Quart, Vol. 52(2), 175-177 (2014)
O. B. and P.J. Larcombe, On the number of complex Horadam sequences with a fixed period, Fibonacci Quart, Vol. 51(4), 339-347 (2013)
O. B., P.J. Larcombe, A. Anjum, Particular orbits of periodic Horadam sequences, Octogon Math Mag, 21 (1) (2013)
P.J. Larcombe, O. B., and E.J. Fennessey, On a Result of Bunder Involving Horadam Sequences: A Proof And Generalization, Fibonacci Quart, Vol. 51(2), 174-176 (2013)
O. B. and P.J. Larcombe, On the characterization of periodic Horadam sequences, Fibonacci Quart, Vol. 51(1), 28-37 (2013)
P.J. Larcombe, O. B., and E.J. Fennessey, Horadam Sequences: A Survey, Bulletin of the ICA, 67 (2013)
O. B., M. Bencze, J.L. Díaz-Barrero, Blind men and the Hypercubes, Missouri J Math Sci, 23 (1), 19-26 (2011)
O. B., Complementary inequalities involving the Stolarsky mean, J Inequal Appl, Vol. 2010, Art. No. 492570, 10pp (2010)
O. B., D. Valcan, Generalizations of some divisibility relations in N, Creat Math Inform, 18, 92-99 (2009)
O. B., Inequalities for chains of normalized sums, JIPAM, 9, 7pp (2008).
O. B., The Extension Of a Cyclic Inequality to the Symmetric Form, JIPAM, 9, 10pp (2008).

Conference papers

D. Andrica, O.B., New results and conjectures on 2-partitions of multisets, 7^th ICSMAO (UAE) (2017)
O.B., A. Birlutiu, M. Chen and I-L Popa, Qualitative Case Study Methodology: Automatic Design and Correction of Ceramic Colors, 21^stICSTCC, Romania (2017)
O. B. and M. Chen, A Horadam-based Pseudo-random number generator, Proceeding of UKSim-AMSS 16th (2014).
M. Trovati and O. B., Influence Discovery in Semantic Networks: An Initial Approach, Proceeding of UKSim-AMSS 16th (2014).
O. B., Using Computer Tests to Teach Mathematics - A Study Case, 4th International Symposium "Mathematical Education in the Current European Context", Romania (2013).
O. B., The Number of Pairs of Integers with the Same lcm, 3rd International Symposium "Mathematical Education in the Current European Context", Romania (2012).

Open Questions and Symposium papers:

M. Stubley, O.B., On the role of Open Questions in the Mathematical Education, 7^th International Symposium "Mathematical Education in the Current European Context", December 16^th, Romania (2016)
G. Illsley, O.B., Understanding the fear of mathematics: Recipes for students and teachers, 8^th International Symposium "Mathematical Education in the Current European Context", December 16^th, Romania (2017).

O.B. and M. Stubley, On OQ.3184, Octogon Math. Mag, 24 (2) (2016)
O.B. and M. Stubley, On OQ.4595 and OQ.4537, Octogon Math. Mag, 25 (1) (2017)
O.B., A. Birnie, C. Pissarides and A. Ahmad, On OQ.3166 and OQ.3484 in Octogon Math. Mag, 24 (2) (2016)
O.B., A. Birnie, C. Pissarides and A. Ahmad, On OQ.3928, On OQ.4259, On OQ.4537 in Octogon Math. Mag, 25 (1) (2017)
O.B., R. Connis and A. Baker: On OQ.4836 and OQ.4837 in Octogon Math. Mag, 25 (1) (2017)

Dr Ovidiu Bagdasar

Senior Lecturer in Mathematics

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