Institute annual report 2021

(updated March 3, 2022)

Human resources

The Numerical Analysis and Approximation Theory workgroup:

The Numerical Modeling workgroup:

PhD advisors

  • Prof. Dr. Radu Precup, m.c., supervises PhD theses at Babeş-Bolyai University.
  • Prof. dr. Octavian Agratini, who supervises PhD theses at Babeş-Bolyai University.
  • Dr. rer. nat. habil. Nicolae Suciu supervises PhD theses.
    He has recently supervised the thesis Filtered density functions for uncertainty assessment of transport in groundwater, by Lennart Schüler, defended on September 8, 2016, at Jena University, Germany; the thesis received the distinction Magna Cum Laudae.
  • Prof. dr. Ion Păvăloiu, honorary member, has supervised -in the past- 8 PhD theses at North University of Baia-Mare and at Babeş-Bolyai University.

Books

Papers published in 2021 in JCR/ISI indexed journals:

Papers in JCR journals from abroad

Papers in JCR journals from Romania

Chapters in books

Papers published in other journals

Prizes, outstanding achievements

  • N. Suciu, the “Spiru Haret” prize of the Romanian Academy, for the monograph Diffusion in Random Fields. Application to Transport in Groundwater, Springer/Birkhauser, 2019.
  • E. Cătinaş, CNCSIS prize for a paper published in the journal ranked first in “Applied Mathematics”: How many steps still left to x*?, SIAM Rev. 63 (2021) no. 3, pp. 585–624 (Impact Factor 2020: 10.7, SRI: 9.8) (code PRECISI-2021-55599)

CNCSIS prizes for papers published in the “red zone” journals (based on journals impact factor or influence score):

  1. N. Suciu, code PRECISI-2021-62584.
  2. R. Precup, code PRECISI-2021-66832
  3. R. Precup, code PRECISI-2021-62454
  4. D. Otrocol, code PRECISI-2021-89830

CNCSIS prizes for papers published in the “yellow zone” journals:

  1. R. Precup, code PRECISI-2021-64695
  2. O. Agratini, code PRECISI-2021-58968
  3. O. Agratini, code PRECISI-2021-58986
  4. O. Agratini, code PRECISI-2021-55727
  5. O. Agratini, code PRECISI-2021-67188
  6. C.I. Gheorghiu, code PRECISI-2021- 63782
  7. C.I. Gheorghiu, code PRECISI-2021- 63786
  8. C.D. Alecsa, code PRECISI-2021- 58531
  9. C.D. Alecsa, code PRECISI-2021-55746
  10. D. Otrocol, code PRECISI-2021-91847
  11. D. Otrocol, code PRECISI-2021-90784

Prof. Dr. R. Precup has H-index 14: https://publons.com/researcher/499454/radu-precup/

Dr. rer. nat. habil. N. Suciu has H-index 13: https://publons.com/researcher/2061433/nicolae-suciu/

Preprints in Arxiv

Papers accepted

  • I. Păvăloiu, E. Cătinaş, A new optimal method of order four of Hermite-Steffensen type, Mediterranean Journal of Mathematics, to appear in 2022.

Papers submitted

Editorial activity

Conferences organized

Conferences attended by the members of the Institute

International conferences

National conferences

  • E. Cătinaş, Ordine de convergenţă, comparaţii asimptotice, metode iterative elementare, Conferinţa Cercetării Științifice din Academia Română (CCSAR-2021), 22-23 noiembrie 2021, https://acad.ro/com2021/doc/docCCSAR/CCSAR-Program-Ziua2-Panel3-vf.pdf.
  • N. Suciu, Metode de tip “random walk” pentru transport reactiv în medii poroase – avantaje și limitări, Conferinţa Cercetării Științifice din Academia Română (CCSAR-2021), 22-23 noiembrie 2021, https://acad.ro/com2021/doc/docCCSAR/CCSAR-Program-Ziua2-Panel3-vf.pdf.
  • M. Nechita, Probleme dominate de convecție: regularizarea asimilării datelor folosind elemente finite, Conferinţa Cercetării Științifice din Academia Română (CCSAR-2021), 22-23 noiembrie 2021, https://acad.ro/com2021/doc/docCCSAR/CCSAR-Program-Ziua2-Panel3-vf.pdf.

The following talks have been given at the symposium 70 years from the foundation of the „Tiberiu Popoviciu” Institute of Numerical Analysis (October 28, 2021)

  • O. Agratini, On Landau-type approximation operators.
  • E. Cătinaş, How many steps still left to x*?
  • N. Suciu, F.A. Radu, Random walk methods for coupled flow and reactive transport in porous media.
  • C.-I. Gheorghiu, On the efficiency of Chebfun system in solving genuinely nonlinear BVPs.
  • D. Otrocol, Differential equations with maxima, via step by step contraction principle.
  • M. Crăciun, A. Pop, ESC method as a tool for differential diagnosis of variability phenomena: periodicity versus quasi-periodicity.
  • I. Boros, An overview of spectral collocation methods which are modified to work in arbitrary precision.
  • M. Nechita, Unique continuation problems and stabilised finite element methods.
  • E. Cătinaş, A. Stan, On the convergence orders.

Grants

  • International grant SU 415/4-1 (https://gepris.dfg.de/gepris/projekt/405338726) obtained by dr. rer. habil. N. Suciu from (Deutschefourschungs Gmemeindschaft), for the project “Integrated global random walk model for reactive transport in groundwater adapted to measurement spatio-temporal scales” (01.10.2018-30.09.2021), at Erlangen-Nuernberg University.