Academician
COŞKUN YAKAR
PROFESÖR
GEBZE TEKNİK ÜNİVERSİTESİ TEMEL BİLİMLER FAKÜLTESİ MATEMATİK BÖLÜMÜ
- Ana Dal Fen Bilimleri ve Matematik Temel Alanı
- Yan Dal Matematik
Article counts come from two sources, each shown separately: YÖKSİS (academic declarations) and OpenAlex (open scholarly catalog). Patents and artistic activities are listed under the Works tabs below.
Index quartiles
Scopus (SJR)
24 Total
- Q1 2
- Q2 6
- Q3 13
- Q4 4
Other counts
- Best Q 24 Q1 2 Q2 5 Q3 13 Q4 4
- YÖKSİS rows 25 Q1 0 Q2 0 Q3 0 Q4 0
WoS (JCR)
24 Total
- Q1 3
- Q2 5
- Q3 5
- Q4 11
Other counts
- YÖKSİS rows 25 Q1 0 Q2 0 Q3 0 Q4 0
TR Index
5 articles
OpenAlex citation percentiles
Top 1% articles
0
Top 10% articles
0
Avg percentile
58.6%
Articles with percentile
19
OpenAlex citation percentile; covered works only (~52%).
What do these indicators mean?
- Q1–Q4: the quartile of the journal in the given index (Scopus/WoS). Q1 = top 25%, Q4 = bottom 25%.
- Top 1% / top 10%: number of works among the top 1% or 10% most-cited worldwide in the same field and year.
- Avg percentile: mean citation percentile of the works (100 = highest).
- Source: index quartiles from Scopus/WoS and TR Index flags; citation percentiles from OpenAlex.
Proceedings
Conference proceedings recorded in YÖKSİS.
Records
- 2006 An Extension of the Quasilinearization Method with Initial Time Difference
- Quasilinearization Method for a Generalized Initial Value Problem on the time Scale.
- 2005 Monotone Technique for Nonlinear Second Order Periodic Boundary Value Problems in Terms of Two Monotone Functions
- 2025 Variation of parameters and Hölder stability of matrix differential systems with initial time difference.
- 2018 Strict Stability of Fuzzy Differential Equations byLyapunov Functions
- 2005 Lipschitz Stability Criteria with Initial Time Difference for Matrix Differential Equations
- 2006 Boundedness Criteria in Terms of Two Measures with Initial Time Difference
- 2005 Variation of parameters formulae and Lipschitz stability criteria for nonlinear matrix differential equations with initial time difference
- 2025 Variation of parameters and Hölder stability of matrix differential systems with initial time difference. International Conference on Mathematics and Applied Data Science, 29–31 Ağustos 2025.
- 2025 Variation of parameters and Lipschitz-type stability in unperturbed matrix differential systems with initial time difference., 29–31 Ağustos 2025. (Tam Bildiri)
- Constant of Variations and Initial Time Difference Lipschitz Stability in Set-Valued Differential Equations,” ICMADS’25, 29–31 Ağustos 2025 — Online Sunum.
- 2017 Initial Time Difference Boundedness Criteria of Perturbed Fuzzy Systems related to Unperturbed Systems
- 2007 Strict Stability Criteria of Perturbed Systems with respect to Unperturbed Systems in term of Initial Time Difference
- 2005 Monotone technique for nonlinear second order periodic boundary value problem in terms of two monotone functions
- 2011 Practical Stability in Terms of Two Measures for Fractional Order Dynamic Systems in Caputo s Sense with Initial Time Difference
- 2006 Boundedness Criteria in Terms of Two Measures with Initial Time Difference
- 2011 Lagrange Stability and Boundedness Criteria in Terms of Two Measures for fractional order dynamic systems in Caputo s sense with Initial Time Difference
- 2016 Initial Time Difference Stability of Perturbed Set Differential Equations related to Unperturbed Set Differential Equations
- 2017 Initial Time Difference Stability of Perturbed Fuzzy Systems Related to Unperturbed Systems
- 2025 Two Measure Analysis of ITD Boundedness and Lagrange Stability in Perturbed Impulsive Differential Equations Relative to The Unperturbed Ones", First International Conference on Mathematics and Applied Data Science (ICMADS’25), Konya, Turkiye.