Previously Taught Courses: Applied Mathematics, Fundamentals of Computer Engineering, Computer Programming, Universal Human Values

Invited Talks

• Delivered the invited talk in One week Short Term Training Program on "Computational Methods for Data Sciences  Integrated with Mathematical Modelling and Operations Research (CMDIMO-2026), January, 12-16, 2026, Dpartment of Mathematics, National Institute of Technology Raipur, Chhattisgarh.
• Delivered the invited talk in International Conference on "Mathematical Sciences and Computing Innovations & Applications", June, 26-28, 2025, North Eastern Regional Institute of Science and Technology (NERIST), Arunachal Pradesh,  in assocaition with NIT, Uttrakhand.
• Delivered the invited talk in National Conference on "Exploring the Role of Mathematics in Computer Science, Machine Learning and Data Science", October 25-27, 2025, Department of Mathematics T.D.PG. College, Jaunpur, Uttar Pradesh
• Chaired a Session for International Conference on "Recent Trends in Mathematics, Statistics and Engineering (ICRTMSE 2023)", organized by School of Technology Management and Engineering SVKM’s NMIMS, Indore on 23 December 2023.

Conference/Workshops Attended

• Presented a paper  in 2nd National Conference on Computational and Characterization Techniques in Engineering & Sciences (CCTES-23) organized by Rajkiya Engineering College, Ambedkar Nagar Uttar Pradesh, India , during February 27-28, 2023.

• Presented a paper entitled  in Modern Mathematics and its Applications (MMA-2022) organized by Department of Math ematics. Banaras Hindu University, Varanasi, India during January, 29-30, 2022.

• Attended one week Faculty Development Program on Mathematical Modelling and Simulation using Python-Level 1 organized by Delhi Technological University from 2-6, December, 2024.

• Attended Three Days Online Workshop on “Mathematical Python” from 7th-9th March 2024, organized by the Department of Mathematics, under the aegis of IQAC, Atma Ram Sanatan Dharma College, University of Delhi.

• Attended Workshop on Mathematical Analysis, Applied Probability Astrophysics (WMAAPA-2023), Organized by Calcutta Mathematical Society from 8-15 September-2023.

• Attended online Lecture Series on “Nonlinear Dynamics and Applications” organized by Indian Institute of Technology, Indore, during February 13-16, 2023.

• Attended “Workshop on Nonlinear Phenomena in Mathematical Biology (WoNPMB-2022)” organized by ABV- Indian Institute of Information Technology and Management, Gwalior during December 19-23, 2022.

• Attended Oneweek Online Certificate Course on Computational Mathematical Software (Mathematica, Maxima &R)organized by Department of mathematics. Atma Ram Sanatan Dharma College (University of Delhi) during February, 22-28, 2022.

• Attended Digital Transformation in Teaching Learning Process ,TEQIP-III organized by Indian Institute of Technology, Bombay during March, 16-30, 2020.

• Attended Advance Pedagogy & Digital Tool for TEQIP Faculty Members,TEQIP-III organized by Indian Institute of Technology, Kharagpur during June, 10-14, 2019.

• Attended Faculty Induction Workshop,TEQIP-III organized by Indian Institute of Technology, Kharagpur during February, 19-23, 2018.

• Attended Workshop on Numerical and Computational Methods for Fluid-Solid Interaction Problems Sponsored by: TEQIP-III(IIT-ISM & BIT Sindri). organized by Department of Applied Mathematics. IIT(ISM), Dhanbad during September, 27-28, 2018.

• Attended the Science Academys Refresher Course on Differential Equation and their Applications in Science and Engineering organized by Department of Applied Mathematics. Indian School of Mines, Dhanbad during July, 4-16, 2016.

• Attended Short term Course on Dynamical Systems: Theory & Applications organized by Department of Applied Mathematics. Indian school of Mines, Dhanbad during June, 26-30, 2016.

• Presented a paper in International conference of the Indian Mathematical Consortium (TIMC) in cooperation with American Mathematical Society organized by Department of Mathematics. DST Centre for Interdisciplinary Mathematical Sciences, Institute of Science, Banaras Hindu University, Varanasi, India during December, 14-17, 2016.

• Attended Workshop on National Program on Differential Equations: Theory, Computation & Applications (NPDE-TCA) organized by Department of Mathematics. University of Calcutta, Kolkata during September, 23-28, 2013.

   

   

Journal Publications

P. Basak, S. K. Tiwari, D. Tripathi, J. P. Tripathi, Spatiotemporal dynamics of a plankton ecosystem under the influence of toxin exposure and additional food, Journal of Applied Mathematics and Computing (2026) 72(1).

S. Mandal, P. Basak, S. K.Tiwari, P. K. Tiwari, Spatiotemporal Dynamics of a Plankton System: Impacts of Phytoplankton Refuge and Supplementary Food for Zooplankton, International Journal of Bifurcation and Chaos (2025), 35(7), 2530016 (33 pages).

J. P. Tripathi, S. Bhuria, S. Yadav, S. K. Tiwari, D. Tripathi,  V. Tiwari, Dynamics of a prey-predator model: Untangling the role of fear-induced Allee effect, prey refuge, and group defense, Journal of Biological Systems  (2025), 33(01), 143-194.

S. Yadav, J. P. Tripathi, S.  Bhuria, S. K. Tiwari, D. Tripathi, V. Tiwari,  R. K. Upadhyay, Y. Kang, Ecological system with fear induced group defense and prey refuge. Differential Equations and Dynamical Systems (2025), 1-48.

R. K. Upadhyay, S. Kumari, B. Mondal,  S. K. Tiwari,  Cross-diffusive pattern formation and Hopf-bifurcation analysis of two species plankton interaction model,  Indian Journal of Pure and Applied Mathematics  (2025), 1-27.

D. Tripathi, J. P. Tripathi, S. K. Tiwari,  D. Jana, L. F.  Hou,  Y.  Shi,  G. Q. Sun, V. Tiwari, J. K. K. Asamoah, Modified Holling Tanner diffusive and non-diffusive predator–prey models: The impact of prey refuge and fear effect, Results in Physics (2024), 65, 107995.

B. Poulomi, S. K. Tiwari, J. P. Tripathi,  V. Tiwari,  R. K.  Mishra,  Plankton interaction model: Effect of prey refuge and harvesting. Computational and Mathematical Biophysics (2024), 12(1), 1-16.

R. Singh, S. K.Tiwari, A. Ojha, N. K. Thakur,  Dynamical study of nutrient-phytoplankton model with toxicity: Effect of diffusion and time delay,  Mathematical Methods in the Applied Sciences (2023), 46(1), 490-509.

S. Kumari, S. K. Tiwari,  R. K. Upadhyay, Cross diffusion induced spatiotemporal pattern in diffusive nutrient–plankton model with nutrient recycling, Mathematics and Computers in Simulation  (2022), 202, 246-272.

V. Tiwari, J. P. Tripathi, D. Jana, S. K. Tiwari, R. K. Upadhyay, Exploring Complex dynamics of spatial predator-prey system: Role of predators interference and additional food, International Journal of Bifurcation and Chaos (2020), 30(7): 2050102 (26 pages).

S. K. Tiwari, R. K. Upadhyay, Conservation of degraded wetland system of Keoladeo National Park, Bharatpur, India, Ecological Complexity (2017), 32:74-89.

R. D. Parshad, R. K. Upadhyay, S. Mishra, S. K. Tiwari, S. Sharma, On the explosive instability in a three-species food chain model with modified Holling type IV functional response, Mathematical Methods in the Applied Sciences (2017), 40(16):5707-5726.

N. K. Thakur, S. K. Tiwari, B. Dubey, R. K. Upadhyay, Diffusive three species plankton model in the presence of toxic prey: Application to Sundarban Mangrove Wetland, Journal of Biological Systems (2017), 25(2): 185-206.

R. K. Upadhyay and S.K. Tiwari, Ecological chaos and the choice of optimal harvesting policy, Journal of Mathematical Analysis and Applications (2017), 448(2): 1533-1559.

R. D. Parshad, E. Quansah, K. Black, R. K. Upadhyay, S. K. Tiwari and N. Kumari, Long time dynamics of a three-species food chain model with Allee effect in the top predator, Computers & Mathematics with Applications (2016), 71(2):503-528.

N. K. Thakur, S.K. Tiwari, R. K. Upadhyay, Harmful Algal Blooms in Fresh and Marine water systems: The role of toxin producing phytoplankton, International Journal of Biomathematics (2016), 9(3): 1650043 (20 pages).

R. K. Upadhyay, S. K. Tiwari, P. Roy, Complex Dynamics of Wetland Ecosystem with Nonlinear Harvesting: Application to Chilika Lake in Odisha, India, International Journal of Bifurcation and Chaos (2015), 25(7): 1540016 (25 pages).

R. K. Upadhyay, V. Rai , S. K. Tiwari, Modeling Wetland Systems of Keoladeo National Park(KNP), India: the Role of Space, Wetland Ecology and Management (2014), 22:605-624.

N. K. Thakur, A. Ojha and S. K. Tiwari, The Role of Adaptation in Plankton System with Beddington-DeAngelis Type Functional Response, in Mathematical Modelling and Scientific Computing with Applications (Springer Proceedings in Mathematics & Statistics), (2020) 308, 21-33.

Current Responsibilities

• Member of Departmental Under Graduate Committee
• Member of Departmental Purchase Committee 
• Member Secretary of Sport and Cultural Committee 
• Member Secretary of Student welfare & grievance cell
• Member of Tabulation Committee
• Member of Examination Committee (2020-2022)
• Chief Hostel Warden (2021-2023)

• Availed CSIR Junior Research Fellowship.
• Availed CSIR Senior Research Fellowship.