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Dhiraj Kumar Das

Assistant Professor, Department of Mathematics, BITS Pilani, Pilani Campus

Infectious disease modelling, Mathematical Biology, Nonlinear Dynamics
Department of Mathematics,
Birla Institute of Technology & Science, Pilani- 333031, Rajasthan. India.
Dheeraj Kumar Das_BITS_Pilani

Scientific Publications

Publications in international journals:

  1. Riya Das, Dhiraj Kumar Das*, T.K. Kar; Analysis of a chronological age-structured epidemic model with a pair of optimal treatment controls , Physica Scripta, 99 (2024): 12 (Q2, SCI indexed).
  2. S. Barman, Suvankar Majee, Soovoojeet Jana, Dhiraj Kumar Das*, T.K. Kar; Complex dynamics of a fractional-order epidemic model with saturated media effect, Nonlinear Dynamics, 112 (2024): Pages 18611–18637. (Q1, SCI indexed).

  3. Subrata Dey, Dhiraj Kumar Das*, S. Ghorai, Malay Banerjee; Spatially heterogeneous ecoepidemic model: stabilizing role of non-local disease transmission; communications in nonlinear science and numerical simulation, 138  (2024): 108238. (Q1, SCI indexed).
  4. Riya Das, Dhiraj Kumar Das*, T.K. Kar ; Qualitative analysis of TB transmission dynamics considering both the age since latency and relapse; Mathematics and Computers in Simulation, 224 (2024): Pages 939-967. (Q1, SCI indexed). 

  5. Riya Das, Dhiraj Kumar Das, T.K. Kar, Ravi P Agarwal; Threshold dynamics of an age-structured vaccinated epidemic model with both direct and indirect routes of infections; Nonlinear Analysis: Real World Applications, 76 (2024): 103993. (Q1, SCI indexed). 

  6. Suvankar Majee, Soovoojeet Jana, Dhiraj Kumar Das, T.K. Kar, J.J. Nieto; Complex Dynamics of a Fractional Order SIR Model with Saturated Treatment and Incidence; International Journal of Bifurcation and Chaos, 33(16) (2023): 2350192. (Q1, SCI indexed).

  7. Dhiraj Kumar Das*, S. Ghorai, Malay Banerjee; Spatio-temporal dynamics of an SIS model with nonlinear incidence and nonlocal disease transmission; Nonlinear Dynamics, 111 (2023), Pages: 15591– 15612. (Q1, SCI indexed).

  8. Suvankar Majee, Soovoojeet Jana, Dhiraj Kumar Das, T.K. Kar; Global dynamics of a fractional-order HFMD model incorporating optimal treatment and stochastic stability; Chaos, Solitons & Fractals, 161 (2022): 112291. (Q1, SCI indexed).

  9. A. Khatua, Dhiraj Kumar Das, T.K. Kar; Optimal control strategy for adherence to different treatment regimen in various stages of tuberculosis infection; European Journal of Physical Plus, 136(8) (2021): 801. (Q2, SCI indexed). 

  10. Dhiraj Kumar Das, A. Khatua, T.K. Kar, S. Jana; The effectiveness of contact tracing in mitigating COVID19 outbreak: A model-based analysis in the context of India, Applied Mathematics and Computation, 404 (2021): 126207. (Q1, SCI indexed).

  11. Dhiraj Kumar Das*, T.K. Kar; Global dynamics of a tuberculosis model with sensitivity of the smear microscopy, Chaos, Solitons & Fractals, 146 (2021): 110879. (Q1, SCI indexed).

  12. Dhiraj Kumar Das*, K. Das, T.K. Kar; Dynamical Behaviour of Infected Predator– Prey Eco-epidemics with Harvesting Effort, International Journal of Applied and Computational Mathematics, 7(3) (2021): Pages: 1-27. (Q3, SCOPUS indexed)

  13. Dhiraj Kumar Das, T.K. Kar; Dynamical analysis of an age-structured tuberculosis mathematical model with LTBI detectivity, Journal of Mathematical Analysis and Applications, 492(1) (2020): 124407. (Q1, SCI indexed).

  14. Dhiraj Kumar Das, S. Khajanchi, T.K. Kar; The impact of the media awareness and optimal strategy on the prevalence of tuberculosis; Applied Mathematics and Computation, 366 (2020): 124732. (Q1, SCI indexed).

  15. Dhiraj Kumar Das, S. Khajanchi, T.K. Kar; Transmission dynamics of tuberculosis with multiple re-infections, Chaos, Solitons & Fractals, 130 (2020): 109450. (Q1, SCI indexed).

  16. S. Khajanchi, Dhiraj Kumar Das, T.K. Kar; Dynamics of tuberculosis transmission with exogenous reinfections and endogenous reactivation, Physica A: Statistical Mechanics and its Applications, 497 (2018), Pages: 52-71. (Q1, SCI indexed).   

 Publications in conference proceedings:

  1. Dhiraj Kumar Das*, S. Khajanchi, T.K. Kar; Influence of multiple reinfections in tuberculosis transmission dynamics: a mathematical approach; 8th International Conference on Modeling Simulation and Applied Optimization (ICMSAO) organized by University of Bahrain, IEEE (2019). (Indexed in SCOPUS) .

  2. Dhiraj Kumar Das*, A. Khatua, T.K. Kar, S. Jana; Modelling the risk of COVID-19 based on major clinical factors: A fuzzy rule approach;  International Conference on Decision Aid Sciences and Application (DASA) rganized by University of Bahrain, IEEE (2021). (Indexed in SCOPUS) .