Annual report 2017
(updated on March 15, 2022, with CNCSIS prizes)
Human resources
The Numerical Analysis and Approximation Theory workgroup:
- dr. Emil Cătinaş
- Prof. dr. Ion Păvăloiu (workgroup coordinator) (since November 2nd)
- dr. Diana Otrocol
- dr. Flavius Pătrulescu
- Mihai Nechita
- Imre Boros
- Cristian-Daniel Alecsa
The Numerical Modeling workgroup:
- dr. Călin-Ioan Gheorghiu (workgroup coordinator)
- dr. Călin Vamoş (deceased on June 21st)
- dr. rer. nat. habil. Nicolae Suciu
- dr. Maria Crăciun
Books
Papers published in JCR/ISI indexed journals
- C. Vamoş, Multiscale structure of time series revealed by the monotony spectrum, Physical Review E, 2017, 95, no. 3, 033310, DOI 10.1103/PhysRevE.95. 033310, (IF 2016 2.366)
- J.P. Boyd, C.I. Gheorghiu, All roots spectral methods: Constraints, floating point arithmetic and root exclusion, Applied Mathematics Letters 67 (2017) 28–3 DOI: 10.1016/j.aml.2016.11.015 (IF 2016: 2.233)
- A. Pop, M. Crăciun, G.R. Mocanu, C. Vamoș, Evidence for quasiperiodicity in orbital period modulation of WW Cygni, Astrophysics and Space Science 362: 76. (2017), DOI:10.1007/s10509-017-3057-4, (IF 2016 1.678)
- G. Moroșanu, M. Nechita, Invariant sets and attractors for Hanusse-type chemical systems with diffusions, Computers and Mathematics with Applications 73 (2017) no. 8, 1815–1823, DOI: 10.1016/j.camwa.2017.02.024 (IF 2016 1.531)
- Patrulescu, M. Sofonea, Analysis of a rate-and-state friction problem with viscoelastic materials, Electronic Journal of Differential Equations, vol. 2017, no. 299 (2017), pp. 1-17 (IF 2017/2018: 0.944 )
- V.A. Ilea, D. Otrocol, An application of the Picard operator technique to functional integral equations, Journal of Nonlinear and Convex Analysis, 18 (2017), No.3, 405-413 (IF 2016: 0.691)
- C.-D. Alecsa, Fixed point theorems for generalized contraction mappings on b-rectangular metric spaces, Stud. Univ. Babes-Bolyai Math. 62 (2017) no. 4, 495–520 DOI: 10.24193/subbmath.2017.4.08
- C.D. Alecsa, On new faster fixed point iterative schemes for contraction operators and comparison of their rate of convergence in convex metric spaces, International Journal of Nonlinear Analysis and Applications, vol. 8 (2017) no. 1, pp. 353-388.
- C.D. Alecsa, A. Petruşel, On some fixed point theorems for multi-valued operators by altering distance technique, Journal of Nonlinear and Variational Analysis, vol. 1 (2017) no. 2, pp. 237-251.
Honors/prizes
- I. Boros (2017), Diploma de excelenţă, din partea Academiei Române Filiala Cluj-Napoca;
CNCSIS prizes for papers published in the “red zone” journals (based on journals impact factor or influence score):
- C. Vamos, code PRECISI-2017-14225
- C.I. Gheorghiu, code PRECISI-2017-20144
- C.I. Gheorghiu, code PRECISI-2017- 20145/PRECISI-2016-13087
Papers published in other journals
- C.D. Alecsa, Stability results and qualitative properties for Mann’s algorithm via admissible perturbations technique, Applied Analysis and Optimization, vol. 1 (2017) no. 2, 327-344 ISSN 2432-1656
- I. Boros, Accurate Chebyshev collocation solutions for the biharmonic eigenproblem on a rectangle, J. Numer. Anal. Approx. Theory, 46 (2017) no. 1, pp. 38-46.
- C.I. Gheorghiu, Stable spectral collocation solutions to Cauchy problems for nonlinear dispersive wave equations, Proceedings CMSM4, (2017), pp. 277-280. ISBN 978-9975-71-915-5
- E. Cătinaș, I. Păvăloiu, Professor Costică Mustăța at his 75th anniversary, J. Numer. Anal. Approx. Theory, 46 (2017) no 1, pp. 3-5.
- E. Cătinaș, N. Suciu, In memoriam dr. Călin Vamoș, member of Tiberiu Popoviciu Institute of Numerical Analysis, J. Numer. Anal. Approx. Theory, 46 (2017) no 1, pp. 107-109.
Papers accepted, published in JCR journals, with DOI, pending for vol., issue, pp.
- M. Crăciun, C. Vamos, N. Suciu, Analysis and generation of groundwater concentration time series, Adv. Water Res., vol. 111 (2018), pp. 20-30. DOI 10.1016/j.advwatres.2017.10.039, (IF 2016 3.221)
- C.I. Gheorghiu, On the numerical treatment of the eigenparameter dependent boundary conditions, Numerical Algorithms, DOI: 10.1007/s11075-017-0305-1 Published online 09 March 2017 (IF 2016: 1.241)
- F. Pătrulescu, A regularization method for a viscoelastic contact problem, Mathematics and Mechanics of Solids, DOI: 10.1177/1081286516676869. ISSN: 1081-2865, (IF 2016: 2.953)
- M. Sofonea, F. Pătrulescu, A. Ramadan, A mixed variational formulation of a contact problem with wear, Acta Applicandae Mathematicae, DOI: 10.1007/s10440-017-0123-4 (IF 2017: 0.702)
Conferences organized
- Numerical Analysis, Approximation and Modeling, Academic Days of Cluj-Napoca (Zilele Academice Clujene) June 14, 2017; website: https://ictp.acad.ro/zilele-academice-clujene-2017/
Conferences attended by the members of the Institute
International conferences:
- N. Suciu, C. Vamoş, M. Crăciun, P. Knabner, Time series parameterization of evolution equations for probability density functions of uncertain concentrations transported in groundwater, SIAM Conference on Mathematical and Computational Issues in the Geosciences, September 11-14, 2017, Erlangen, Germany.
- M. Crăciun, C. Vamoş, N. Suciu, Numerical analysis and generation of groundwater concentration time series, (poster), SIAM Conference on Mathematical and Computational Issues in the Geosciences, September 11-14, 2017, Erlangen, Germany.
- C.I. Gheorghiu, Stable spectral collocation solutions to Cauchy problems for nonlinear dispersive wave equations, 4th Conference of the Mathematical Society of the Republic of Moldova, Chisinau, June 29, 2017 – July 1, 2017.
- C.I. Gheorghiu, organizer of the symposium Numerical analysis, an art or merely a science? Conferinţa de Matematică Aplicată şi Industrială, CAIM 2017, September 14-17, 2017, Univ. Al. I. Cuza, Iasi, www.romai.ro
- C.I. Gheorghiu, Accurate spectral solutions to a class of singular nonlinear boundary value problems on unbounded domain. Conferinţa de Matematică Aplicată şi Industrială, CAIM 2017, September 14-17, 2017, Univ. Al. I. Cuza, Iasi, www.romai.ro
- F. Pătrulescu, Penalization and regularization methods for history-dependent variational inequalities, Mathematics Analysis with Applications in Mechanics, Perpignan, September 06-08, 2017. http://mathlamps.univ-perp.fr/Maam/maam2017.html
National conferences:
- C. Vamoş, N. Suciu, Global random walk solutions for flow in porous media, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- I. Păvăloiu, E. Cătinaș, On a class of iterative methods of Chebyshev-Hermite-Steffensen type, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- E. Cătinaș, A new perspective on the Aitken Δ2 acceleration process, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- C. Mustăţa, Extensions theorems for Lipschitz functions and some applications, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- M. Crăciun, C. Vamoş, N. Suciu, Modeling and numerical generation of hydrological concentration time series, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- C. Vamoş, N. Suciu, Global random walk solutions for flow in porous media, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017.
- C.I. Gheorghiu, Spectral Collocation for Problems on Unbounded Domains, Romanian-German Seminar on Approximation Theory and its Applications, RoGer 2017, April 21-22, Universitatea Oradea
- C.I. Gheorghiu, High order collocation solutions to problems on unbounded domains, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- D. Otrocol, An iterative algorithm for solving some second order nonlinear differential equations, Cluj Academic Days, June 13-14, 2017, http://ictp.acad.ro/zilele-academice-clujene-2017/
- F. Pătrulescu, Numerical analysis of some 1D BVP using penalization and regularization methods, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- F. Pătrulescu, History-dependent contact problems: numerical approximation using penalization and regularization methods, Workshop Applied Mathematics: Methods and Modeling, Craiova, May 07-08, 2017. http://math.ucv.ro/wammm2017/index.html
- I. Boros, Accurate Chebyshev collocation solutions to a generalized Orr-Sommerfeld eigenvalue problem. Applications to laminar flows in porous media, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- C. Alecsa, Fixed point theorems for generalized contraction mappings on b-rectangular metric spaces, Zilele Academice, Simpozion “Analiză numerică, aproximare şi modelare”, 14 iunie 2017
- C. Alecsa, Asupra unor noi scheme iterative pentru operatori de tip contracție. Compararea ratelor de convergență în spații metrice convexe, Sesiunea Națională de Comunicări Științifice de Matematică, (ediția a IV-a, 6-9 iulie 2017), URL: http://www.math.uaic.ro/~sncssm/
- C. Alecsa, Teoreme de punct fix pentru contracții generalizate pe spații metrice b-rectangulare, Sesiunea de Comunicări Științifice ale Studenților – Matematică (6 iunie 2017), URL : http://www.cs.ubbcluj.ro/programul-sesiunii-de-comunicari-stiintifice-ale-studentilor-pe-domeniul-matematica/