

Subir Das
Designation: Professor
&
Deputy Coordinator, SAPUGC
Phone: +919451141269
Email: subir_das08@hotmail.com; sdas.apm@itbhu.ac.in
Research Areas:
Fracture Mechanics, Mathematical Modelling, Fractional Calculus, Nonlinear Dynamics
M. Sc.( Applied Mathematics) and Ph. D. (Science),
Recipient of Griffith Memorial Award, 2000 in Science from University of Calcutta.
Selected a Member of American Mathematical Society ( AMS ).
Research Supervision
Ph. D. Supervision : 11 (Awarded), 06 (On going).
M.Tech. Supervision : 15 (Awarded), 02 (On going).
Special Awards /Recognisations
 Offered a Membership from IEEE Computer Society, Watanabe Building, 142 MinamiAoyama, Minatoku, Tokyo 1070062, Japan.
 Offered a Membership from IEEE Computer Society, 13, Avenue de I’Aquilon, B1200 Brussels, Belgium.
 Received 2011 ITBHU Publication Award under 1st Prize category for the faculty presented by ITBHU Global Alumni Association.
 Received 2012 ITBHU Publication Award under 1st Prize category for the faculty presented by ITBHU Global Alumni Association.
 Received 2013 IIT (BHU) Publication Award under 1st Prize category for the faculty presented by IIT (BHU) Global Alumni Association.
 Received 2014 IIT (BHU) Publication Award under Star Prize category for the faculty presented by IIT (BHU) Global Alumni Association.
 Delivered an Invited talk on “Study of some mathematical models related to fractional nonlinear problems” in 19th Ramanujan Symposium on recent trends in nonlinear partial and fractional differential equations at Ramanujan Institute for Advanced Study in Mathematics, University of Madras during March 24, 2016.
Fracture Mechanics
 S. Das and B. Patra, Moving Griffith Crack at the interface of two dissimilar orthotropic HalfPlanes, Engineering Fracture Mechanics, V. 54, 523531 (1996)
.
 S. Das and B. Patra, Stress Intensity Factors for a pair of equal parallel interfacial cracks on a layer sandwiched between two dissimilar Halfplanes, Proceeding of the 10th Mathematical Conference, Bangladesh Mathematical Society, V. 89, 5964 (1997).
 S. Das and B. Patra, Stress Intensity Factors and Crack Energies for a Cruciform crack in an Orthotropic elastic plane, Bulletin of Calcutta Mathematical Society, V. 89, 5964 (1997).
 S. Das and B. Patra, Interaction between three Line Cracks in a Sandwiched Orthotropic Layer, International Journal of Applied Mechanics and Engineering, V.3, 249269 (1997).
 S. Das, B. Patra and L. Debnath, Diffraction of SHWaves by a Griffith Crack in an infinite Orthotropic medium, Applied Mathematics Letters, V. 12, 5761(1997)
 S. Das, B. Patra and L. Debnath, Stress Intensity Factors for an interfacial crack between an Orthotropic Halfplane bonded to a dissimilar Orthotropic layer with a punch, Int. J. Computers and Mathematics with applications, V. 35, 2740 (1998).
 S. Das and B. Patra, Stress Intensity Factors for moving interfacial crack between bonded dissimilar fixed orthotropic layers, Computers and Structures, V. 69, 459472 (1998).
 S. Das, B. Patra and L. Debnath, Stress Intensity factors for an interfacial Griffith crack in composite media, International Journal of Engineering Science, V. 37, 453475(1999)
 S. Das and B. Patra, A pair of equal collinear interfacial Griffith Cracks, International Journal of Applied Mechanics and Engineering, V. 4, 97112 (1999).
 S. Das and B. Patra, Stress Intensity Factor around a Griffith Crack in Orthotropic Punched Layer, Indian Journal of Pure and Applied Mathematics, V. 30, 10031015 (1999).
 S. Das and L. Debnath, Interaction of Elastic Waves by an interfacial Griffith Crack, International Journal of Computers and Mathematics with applications, V. 38, 151158(1999).
 S. Das, B. Patra and L. Debnath, Stress Intensity Factors around two coplanar Griffith Cracks in an Orthotropic layer sandwiched between two identical Orthotropic Halfplanes, International Journal of Engineering Science, V. 38, 121133(2000).
 S. Das and L. Debnath, Study of static cruciform crack in an Orthotropic elastic media, International Journal of Computers and Mathematics with applications, V.40, 569575(2000).
 S. Das, B. Patra and L. Debnath, Diffraction of SHWaves by collinear Griffith cracks in an infinite transversely Isotropic medium, Canadian Applied Mathematics Quarterly, V. 8, 1726 (2000).
 S. Das, B. Patra and L. Debnath, Interaction between Griffith cracks at the interface of elastic media, Korrean Journal of Comput. and Applied Math., V.8, 5969(2001).
 S. Das, Three interfacial Griffith cracks between bonded dissimilar elastic media, International Journal of Applied Mechanics and Engineering, V. 6,133149(2001).
 S. Das, On a moving interfacial Griffith crack at the interface of two bonded dissimilar Orthotropic HalfPlanes, ZAMM. Z. Angrew. Math. Mech., V. 81,281287(2001).
 S. Das and L. Debnath, Stress Intensity Factor around a moving Griffith Crack in a Punched Orthotropic Layer, Mathematical and Computer Modelling, V.33, 957963(2001).
 S. Das, Interaction between line cracks in an Orthotropic Layer, International Journal of Mathematics and Mathematical Sciences, V.29, 3142(2002).
 S. Das and L. Debnath, Interaction between Griffith cracks in a sandwiched Orthotropic layer, Applied Mathematics Letters, V.16, 609617(2003).
 A. Baksi, S. Das, and R. K. Bera, Impact Response of a Cracked Orthotropic Medium Revisited, International Journal of Engineering Science, V.41, 20632079(2003).
 S.Das and B. Patra, A Pair of equal collinear Interfacial Cracks between bonded dissimilar fixed Isotropic Layers  International Journal of Applied Mechanics and Engineering, V.8, 167175 (2003).
 S. Das, Moving Interfacial Griffith cracks between bonded dissimilar Orthotropic Half Planes, Canadian Applied Mathematics Quarterly, V.12, 303322 (2004).
 S. Das, B. Patra and L. Debnath, On Elastodynamical problem of Interfacial Griffith Cracks in Composite Media, International Journal of Engineering Science, V.42, 736752 (2004).
 A. Baksi, S. Das and R. K. Bera, Interaction of moving Interfacial cracks between bonded dissimilar elastic strips under antiplane shear  International Journal of Pure and Applied Mathematics, V.15, 1324 (2004).
 S. Das, Pair of Collinear interface cracks between dissimilar fixed orthotropic layers, International Journal of Computational Civil and Structural Engineering, V.1, 6578 (2005).
 S. Das and S. Mukherjee, Moving Interfacial Griffith Crack between dissimilar Media, Journal of Applied Mathematics, V.2005, 289299 (2005).
 S. Das, Elastodynamic Response of a Cracked Orthotropic Medium under Impact loading, Computational Materials Science, V.37, 187192 (2005).
 S. Mukherjee and S. Das, Moving Griffith Crack in an Orthotropic Strip with Punches at boundary faces, International Journal of Mathematics and Mathematical Sciences, V.19, 31573167 (2005).
 S. Mukherjee and S. Das, Weight Function for a crack in an Orthotropic medium under Normal Impact loading, International Journal of Applied Mechanics and Engineering, V.11, 915928 (2006).
 S. Das, Interaction of moving interface collinear Griffith cracks under Antiplane Shear, International Journal of Solids and Structures, V.43, 78807890 (2006).
 S. Das, Weight function for a crack in a twodimensional Orthotropic medium under impact shear loading, International Journal of Fracture, V. 142, 331338 (2006).
 A. Baksi, S. Das and R. K. Bera, A Note on thermo elastic problem of two collinear Griffith cracks in an Orthotropic medium, International Journal of Pure and Applied Mathematics, V. 36, 365374 (2007).
 S. Das and B. Patra, Impact Response of a Cracked Orthotropic Strip, International Journal of Computational Civil and Structural Engineering, V.1, 3646 (2007).
 S. Mukherjee and S. Das, Interaction of three interfacial Griffith cracks between bonded dissimilar orthotropic half planes, International Journal of Solids and Structures, V.44, 54375446 (2007).
 S. Das, S.Chakrborty, N.Srikanth and M.Gupta, Symmetric Edge Crack in an Orthotropic strip under normal loading, International Journal of Fracture, V.153, 7784 (2008).
 S. Das, Elastodynamic Response of Cracked Orthotroppic Strip under Impact Loading, International Journal of Fracture, V.153, 177184 (2008).
 S. Das, Weight function for an Edge Crack in an infinite Orthotropic strip under normal point force loading, ZAMM. Z. Angrew. Math. Mech., V.90, 271277(2010).
 S. Das, S. Mukhopadhyay and R. Prasad, Stress Intensity Factor of an edge crack in bonded orthotropic materials, International Journal of Fracture, V.168, 117123 (2011).
 S. Das, S. Mukhopadhyay and R. Prasad, Stress intensity factor of an edge crack in composite media, International Journal of Fracture, V. 172, 201–207 (2011).
 S. Das, S. Mukhopadhyay and R. Prasad, Boundary integral equation formulation for coupled thermoelasticity with three phaselags  Mathematics and Mechanics of Solids, V.18, 4458 (2013).
 S. Das, S. Mukhopadhyay and R. Prasad, A two dimensional problem of ModeI crack in a type III thermoelastic medium, Mathematics and Mechanics of Solids, V. 18, 506523 (2013).
 P. K. Mishra, S. Das and M. Gupta, Interaction between interfacial and subinterfacial cracks in a composite media  Revisited, ZAMM. Z. Angrew. Math. Mech., DOI: 10.1002/zamm.201500102 (2016).
 P. K. Mishra and S. Das, Interaction between interfacial collinear Griffith cracks in composite media under thermal loading, Zeitschrift für Naturforschung, V. 71, 465–473 (2016).
 P. K. Mishra and S. Das, Two interfacial collinear Griffith cracks in thermoelastic composite media, Thermal Science, Accepted (2016).
Mathematical Modelling
 S. Das, Solution of Fractional Vibration Equation by the Variational Iteration Method and Modified Decomposition Method, Int. J. of Nonlinear Sciences and Numerical Simulation, V.9, 361366 (2008).
 Rajeev, K.N. Rai and S. Das, Numerical Solution of a Moving Boundary Problem with variable latent heat, Int. J. of Heat and Mass Transfer, V.52, 19131917 (2008).
 S. Das, Analytical approximate solution of diffusion equation of fractional order by Variational Iteration Method, Chaos, Solitons & Fractals, Accepted (2009).
 S. Das, Solution of Vibration Equation by Variational Iteration Method and Modified Decomposition Method, International Journal of Applied Mechanics and Engineering, V. 9, 361–366 (2009).
 S. Das, A Numerical Solution of the Vibration Equation using Modified Decomposition Method, Journal of Sound and Vibration, V. 320, 576583 (2009).
 K.N. Rai, Rajeev and S. Das, Solution of one dimensional moving boundary problem with periodic boundary conditions by Variational Iteration Method, Thermal Sciences, V.13, 199204 (2009).
 S. Das, Analytical Solution of a Fractional Diffusion Equation by Variational Iteration Method, Computers and Mathematics with Applications, V. 57, 483487 (2009).
 S. Das, P. K. Gupta and Rajeev, A Fractional predatorprey Model and its Solution, Int. J. of Nonlinear Sciences and Numerical Simulation, V. 10, 873876 (2009).
 S. Das, A Note on Fractional Diffusion Equations, Chaos, Solitons & Fractals, V. 42, 2074  2079 (2009).
 S. Das, P.K. Gupta, V.S. Pandey and K. N. Rai, Application of He’s Homotopy Perturbation Method to fractional Diffusion Equation, Zeitschrift für Naturforschung A, V. 65a, 5358 (2009).
 V. Srivastava, K.N. Rai and S. Das, Analytical approach to micro scale biofilm heat transport using homotopy perturbation method, Int. J. of Applied Mathematics and Computation, V.1, 148158(2009).
 S. Das and P.K. Gupta, An Approximate Analytical Solution of the Fractional Diffusion Equation with Absorbent Term and External Force by Homotopy Perturbation Method, Zeitschrift für Naturforschung A, V. 65a,182190 (2010).
 D. Tripathi, S. K. Pandey, and S. Das, Peristaltic Flow of Viscoelastic Fluid with Fractional Maxwell Model through a Channel, Applied Mathematics and Computation, V. 215, 36453654 (2010).
 S. Das, A Note on Fractional Schrodinger Equation, Nonlinear Science, Letter A, V.1, 9194 (2010).
 S. Das, R. Kumar and P. K. Gupta, Homotopy Analysis Method for Fractional Diffusion Equation with Absorbent Term and External Force, Journal of Nonlinear Systems and Applications, V. 1, 141145 (2010).
 S. Das and Rajeev, Solution of fractional diffusion equation with a moving boundary condition by Variational Iteration Method and Adomian Decomposition Method, Zeitschrift für Naturforschung A, Vol. 65a, 793799 (2010).
 S. Das, R. Kumar and P. K. Gupta, An approximate analytical solution of the fractional diffusion equation with external force and different type of absorbent term – Revisited, Special Issue No. 1, 101109 (2010).
 K. Rajeev and S. Das, A Numerical Study for Inward Solidification of a Liquid Contained in Cylindrical and Spherical Vessel, Thermal Sciences, V.14, 365372 (2010).
 S. Das, R. Kumar, P.K. Gupta, Approximate analytical solutions for fractional space and time partial differential equations using homotopy analysis method, Applications and Applied Math. V. 5, 16411659 (2010).
 S. Das, P.K. Gupta and K. Vishal, Approximate approach to the Das Model of Fractional Logistic Population Growth, Applications and Applied Mathematics, V. 5, 17021708 (2010).
 S. Das, S. Kumar and O.P. Singh, Solutions of Nonlinear Second Order Multipoint Boundary Value Problems by Homotopy Perturbation Method, Applications and Applied Mathematics, V, 05, 15921600 (2010).
 S. Das, and R. Kumar, An Approximate Analytical Solution of OneDimensional Phase Change Problems in a Finite Domain, Applied Mathematics and Computation, V.217, 60406046 (2011).
 S. Das, Approximate analytical solutions of timespace fractional diffusion equation by Adomian Decomposition Method and Homotopy Perturbation Method, Communications in Fractional Calculus, V.2, 2935 (2011).
 S. Das and P.K. Gupta, Application of Homotopy Perturbation Method and Homotopy Analysis Method to Fractional Vibration Equation, Int. J. of Computer Mathematics, V. 88, 430441 (2011).
 S. Das and P.K. Gupta, Homotopy Analysis Method for Solving Fractional Hyperbolic Partial Differential Equations, Int. J. of Computer Mathematics, V. 88, 578588 (2011).
 D. Tripathi, P.K. Gupta, and S. Das, Influence of Slip Condition on Peristaltic Transport of a Viscoelastic Fluid with Fractional Burgers’ model, Thermal Sciences, V. 15, 501515 (2011).
 H. Jafari, S. Das and H. Tajadodi, Solving a multiorder fractional differential equation using Homotopy analysis method, Journal of King Saud University (Science), V.23, 151155 (2011).
 S. Das, R. Kumar, and P.K. Gupta, Analytical approximate solutions of space and time fractional diffusion equation with a moving boundary condition, Zeitschrift für Naturforschung A, V. 66a, 281–288 (2011).
 D. Tripathi, S.K. Pandey and S. Das, Peristaltic transport of a generalized Burgers' fluid: Application to movement of chyme in the small intestine, Acta Astronautica, V. 69, 3038 (2011)
 S. Das, H. Jafari and P.K. Gupta, Approximate analytical solution of the Fractional predatorprey model for n–species by Homotopy Analysis Method, J. Adv. Res. Sci. Comput., V. 3, 1530 (2011).
 S. Das, R. Kumar and P.K. Gupta, The homotopy analysis method for fractional Cauchy reaction–diffusion problems, International Journal of Chemical Reactor Engineering, V. 9, 15426580, (2011).
 S. Das and P.K. Gupta, A Mathematical Model on fractional LotkaVolterra equations, Journal of Theoretical Biology, V. 277, 16 (2011).
 S. Das, P.K. Gupta and P. Ghosh, An approximate solution of nonlinear fractional reactiondiffusion equation, Applied Mathematical Modelling, V.35, 40714076 (2011)
 S. Das, K. Vishal and P.K. Gupta, Solution of the nonlinear fractional diffusion equation with absorbent term and external force, Applied Mathematical Modelling, V.35, 3970–3979 (2011).
 S. Das, K. Vishal, P.K. Gupta and A. Yildirim, An approximate analytical solution of timefractional telegraph equation, Applied Mathematics and Computation, V.217, 74057411 (2011).
 S. Das, K. Vishal, P.K. Gupta, and S. Saha Ray, Homotopy Analysis Method for solving Fractional Diffusion equation, Int. J. Applied Mathematics and Mechanics, 7, 2837 (2011).
 S. Das and R. Kumar, Approximate analytical solutions of fractional gas dynamic equations, Applied Mathematics and Computation, V. 217, 99059915(2011).
 S. Das, An approximate analytical solution of Schrodinger equation, Nonlinear Science, Letter B, V.1, 129133 (2011).
 N. A. Khan, M. Jamil, A. Ara and S. Das, Explicit Solution for TimeFractional Batch Reactor System, Int. J. of Chemical Reactor Engineering, V.9, A 91(2011).
 K. Vishal, S. Kumar and S. Das, Application of Homotopy Analysis Method for Fractional Swift Hohenberg Equation Revisited, Applied Mathematical Modelling, V. 36, 36303637 (2011).
 S. Das, An approximate analytical solution of nonlinear fractional diffusion equation, International Journal of Nonlinear Science, V.12, 339346 (2011).
 N. A. Khan, M. Jamil, A. Ara and S. Das, Compact on Solutions of Nonlinear Dispersive K(n,n) Equations with Time fractional Derivatives, World Applied Science Journal, Accepted (2011).
 K. Vishal and S. Das, Solution of the nonlinear fractional diffusion equation with absorbent term and external force using optimal homotopyanalysis method, Zeitschrift für Naturforschung A, V.67a, 203209 (2012).
 P. Ghosh, A. Sarkar and S. Das, Analysis of film condensation along a vertical flat plate under sinusoidal GJitter, Microgravity, Science and Technology, Springer, V.25, 95102 (2012).
 R. Kumar and S. Das, Fractional diffusion equations in the presence of reaction terms, Communications in Fractional Calculus, Accepted (2012).
 S. Das, Approximate Solution of Fractional Diffusion Equation – Revisited, International Review of Chemical Engineering, V. 4, 501504 (2012).
 S. Das, K. Vishal and P. K. Gupta, Approximate analytical solution of diffusion equation with fractional time derivative using optimal homotopy analysis method, Surveys in Mathematics and its Applications, Accepted, V.8, 3549 (2013).
 S. Das and S. P. Ansari, Stability analysis of fractional order waterborne epidemic model, Communications in Fractional Calculus, V.4, 2531 (2013).
 P. K. Singh and S. Das, Approximate analytical solutions of the timefractional coupled Burger equations and KdV equations using homotopy perturbation transform method, Problems of Nonlinear Analysis In Engineering Systems, V.19, 5867 (2013).
 K. Vishal, S. Das, S. H. Ong and P. Ghosh, On the Solutions of Fractional Swift Hohenberg Equation with dispersion, Applied Mathematics and Computation, V. 219, 57925801 (2013).
 V. Mishra, K. Vishal, S. Das, and S. H. Ong, On the solution of the nonlinear fractional diffusionwave equation with Absorbtion: Homotopy approach, Zeitschrift für Naturforschung, V.69, 135144 (2014).
 V. Mishra and S. Das, Solution of Variable order fractional differential equations using homotopy analysis method, Journal of Mathematics and Computer Science, Accepted (2015).
 V. Mishra, S. Das, H. Jafari and S. H. Ong, Study of fractional order Van der Pol Equation, Journal of King Saud UniversityScience, Elsevier, V. 28, 55–60 (2016).
 S. Das, P. Kar and V. Mishra, Solution of Nonlinear Fractional diffusion equation using similarity transform and homotopy analysis method, International Review of Chemical Engineering, V. 7, 2228 (2015).
Nonlinear Dynamics
 M. Srivastava, S. K. Agrawal and S. Das, Synchronization of chaotic fractional order LotkaVolterra systems, Int. J. of Nonlinear Science, V.13, 482494 (2012).
 S. K. Agrawal, M. Srivastava and S. Das, Synchronization of fractional order chaotic systems using Active control, Chaos, Solitons & Fractals, V. 45, 737752 (2012).
 S. K. Agrawal, M. Srivastava and S. Das, Synchronization between fractional order RavinovichFabrikant and LotkaVolterra system, Nonlinear Dynamics, V. 69, 22772288 (2012).
 S. K. Agrawal, M. Srivastava and S. Das, Hybrid Synchronization between different fractional order Hyperchaotic systems using Active control method, Journal of Nonlinear System and Application, V.2013, 7076 (2013).
 M. Srivastava, S. K. Agrawal and S. Das, Adaptive antisynchronization between different hyperchaotic systems with uncertain parameters, Differential Equations and Control Processes, V.4, 92110 (2012).
 S.K. Agrawal and S. Das, A modified adaptive control method for Synchronization of some fractional chaotic systems with unknown parameters, Nonlinear Dynamics, Springer, V.73, 907919 (2013).
 S. Das, M. Srivastava and A.Y.T. Leung, Hybrid phase synchronization between identical and nonidentical threedimensional chaotic system using active control method, Nonlinear Dynamics, V.73, 22612272 (2013).
 S.K. Agrawal and S. Das, Projective Synchronization between different fractional order hyperchaotic systems with uncertain parameters using Proposed Modified Adaptive Projective Synchronization Technique, Mathematical Methods in the Applied Sciences, DOI: 10.1002/mma. 2963 (2013).
 M. Srivastava, S.K. Agrawal, K. Vishal and S. Das, Adaptive projective synchronization between different chaotic systems with parametric uncertainties and external disturbances, Pramana  Journal of Physics, Springer, V.81, 417437 (2013).
 M. Srivastava, S. K. Agrawal and S. Das, Reducedorder antisynchronization of the projections of the fractional order hyperchaotic and chaotic systems, Central European Journal of Physics, 11(10), 15041513 (2013).
 M. Srivastava, S. P. Ansari, S. K. Agrawal, S. Das and A. Y. T. Leung, Antisynchronization between identical and nonidetical fractional order chaotic systems using Active control method, Nonlinear Dynamics, 76, 905914 (2014).
 M. Srivastava, S.K. Agrawal, K. Vishal and S. Das, Chaos control of Fractional order RavinovichFabrikant System and Synchronization between chaotic and chaos controlled Fractional order RavinovichFabrikant system, Applied Mathematical Modelling, 38 (13), 33613372 (2014).
 S.P. Ansari and S. Das, Projective Synchronization of timedelayed chaotic systems with unknown parameters using Adaptive Control Method, Mathematic?al Methods in the Applied Sciences, V. 38, 726737 (2015).
 S.P. Ansari and S. Das, Phase Synchronization between fractional order chaotic systems with uncertainties and external disturbances, Proc. American Institute of Phys., Accepted (2015).
 S.K. Agrawal and S. Das, Function Projective Synchronization between four dimensional Chaotic Systems with Uncertain Parameters Using Modified Adaptive Control Method, Journal of Process Control, V.24, 517530 (2014).
 K. Vishal, S. K. Agrawal and S. Das, Hyperchaos control and adaptive synchronization with uncertain parameters for fractional order MathieuVan der Pol systems, Pramana  Journal of Physics, Springer, V. 86, 5975 (2016).
 S. P. Ansari, S. K. Agrawal and S. Das, Stability Analysis of fractional order Generalized Chaotic SIR epidemic model and Its Synchronization using Active Control Method, Pramana  Journal of Physics, Springer, V.84, 2332 (2015).
 V. K. Yadav, S. K. Agrawal, M. Srivastava and S. Das, Phase and antiphase synchronizations of fractional order hyperchaotic systems with uncertainties and external disturbances using nonlinear Active control method, International Journal of Dynamics and Control, 110, 11 June (2015).
 S. Das and V. K. Yadav, Chaos control and function projective synchronization of fractional order systems through backstepping method, Theoretical and Mathematical Physics, Accepted (2015).
 A. K. Singh, V. K. Yadav and S. Das, Synchronization between fractional order complex chaotic systems, International Journal of Dynamics and Control, 115, 29 January (2016).
 V. K. Yadav and S. Das, Stability analysis, Chaos control of Fractional order Vallis and El Nino systems and its Synchronization, IEEE Journal of Automatica Sinica, Accepted (2016).
Book Chapter
 Homotopy Analysis Method for fractional SwiftHohenberg equation, Advances in the
Homotopy Analysis Method, Editor  S. J. Liao, World Scientific Publisher, 2014.
1. Presented a paper
entitled ‘ Stress Intensity Factors for a pair of
equal parallel Interfacial Cracks on a layer
sandwiched between two dissimilar Halfplanes’ in
the 10th Bangladesh Mathematical Conference
organized by Bangladesh Mathematical Society in University
of Dhaka, Bangladesh in 1995. 
2. Selected as a
participant in attending the Summer School course
on Non linear Hyperbolic Equations’ conducted by CIMPA
was held in Fudan
University, Beijing, China from September
926,1998. 
3. Selected as a
participant in attending the 31st Symposium on
Mathematical Physics, institute of Physics, Nicholas Copernicus
University, May 1821, 1999, Torun, Poland.

4. Selected as a
participant in attending the Quantum Symposium in
Thermal Physics and Mathematics (School) CIMPA  UNSA  UNESCO
 ARGENTINA San Carlos de Bariloche, Argentina,
January 1024, 2000. 
5. Participated in the
CIMPA School course on Mathematical Problems
arising from thin Structures held in Sanghai, CHINA,
August 2031, 2001. 
6. Selected as a
participant in the International conference on
SMART TECHNOLOGY DEMONSTRATORS AND DEVICES in Edinburgh, U.K.,
December 1214,2001. 
7. Selected as a
participant in the Satellite conference of ICM,
2002 Beijing on Scientific computing (SCSC) held
in Xian, CHINA,
during August 1518 , 2002. 
8. Delivered a lecture in
the Laboratory of the Faculty of Engineering in Shizuoka
University, JAPAN, during December 5  7,
2004. 
9. Participated in the
CIMPA School course on Kinetic Equations : from
Theory to Applications held in Academia Sinika,
Taipei, Taiwan, during December 8  20 ,
2004. 
10. Participated in the
NSF  CBMS Conference on New Perspective for
boundary value problems and their Asymptotics
held in University
of Texas, USA during May 1620, 2005. 
11. Had been an Academic
Visitor to the Department of Mechanical
Engineering at National
University
of Singapore (NUS) from June
03 June 10, 2007. 
12. Presented a paper
titled Interaction of moving Interfacial cracks in
composite media under antiplane shear at ICIAM’07 held at ETH,
Zurich, Switzerland
between July 16  July 20, 2007.

13. Had been an Academic
Visitor to the Department
of Applied Mathematics at ICTP, Trieste, Italy
from July 21July 29, 2007.

14. Had been an Academic
Visitor to the Department of Mechanical
Engineering at National University of
Singapore(NUS) from June 13June
25, 2008.

15. Presented a paper
titled " Solution of timespace fractional
diffusion equation with Absorbant term " at ICCSA 2009
held at University
of Le Havre , Le Havre, Normandy, France
during June 29 July 02, 2009.

16. Had been an Academic
Visitor to the Department of Mechanical
Engineering at National
University of Singapore (NUS) from June 16  June 30,
2010. 
17. Had been an
Academic Visitor of the Department of Mechanical
Engineering at Hong
Kong Polytechnique University from
February 1219, 2011.

18. Had been an
Academic Visitor of the Institute of
Mathematical Science, University of Malaya,
Malaysia from June 15 July 14, 2011.

19. Had been an
Academic Visitor of the Department of Civil and
Construction Engineering at City University, Hong Kong during February 29
 March 10, 2012.

20. Had been an
Academic Visitor of the Institute of
Mathematical Science, University of Malaya, Malaysia
from June 15
July 14, 2012.

21. Had been an
Academic Visitor of the Department Mechanical
Engineering, Tokyo
University of science, Tokyo, Japan
during June
817, 2013.

22. Had been an
Academic Visitor of the Department of Civil and
Construction Engineering, at City University,
Hong Kong during June 1723,
2013.

23. Had been an
Academic Visitor of the Institute of
Mathematical Science, University of Malaya, Malaysia,
from
July 316, 2013.

24.Had been an Academic Visitor to the Department of Mechanical Engineering at National University of Singapore (NUS) from April 3 – April 10, 2014.

25.Had been an Academic Visitor of the Institute of Mathematical Science, University of Malaya, Malaysia from June 1730, 2014.

26.Presented a paper titled “Phase Synchronization between fractional order chaotic systems with uncertainties and external disturbances” at International Conference of Numerical Analysis and Applied Mathematics (ICNAAM 2014) held at Rhodes, Greece during Sept 22 – 28, 2014.

27.Presented a paper titled “Chaos control and function projective Synchronization of fractional order systems through backstepping method” at International Conference of Physics and Mathematics of Nonlinear Phenomena (PMNP 2015) held at Gallipoli, Italy during June 20 – 27, 2015.

28.Had been an Academic Visitor of the Institute of Mathematical Science, University of Malaya, Malaysia from July 1222, 2015. 
Seminar / conference / workshop organised
 Organised a Summer School under the aegis of the Department of Science & Technology, Govt. of W.B. and West Bengal State Council of Science & Tech. during 27th April – 8th May, 2007 at BPPIMT, Kolkata.
 Acted as the Organising Secretary in National Conference on Recent Trends in Mathematical
Modelling and simulation RTMMS2010 held in Department of Applied Mathematics, IT, BHU, Varanasi during March 1820, 2010.
 Acted as the Organising Secretary in National Conference on Mathematical Modelling and Computer simulation MMCS2011 held in Department of Applied Mathematics, IT, BHU, Varanasi during March 2527, 2011.
 Acted as the joint Convener in National Conference on Mathematical Modelling and Computer simulation MMCS2012 held in Department of Applied Mathematics, IT, BHU, Varanasi during March 2325, 2012.
 Organised a National Workshop on Mathematical Modelling & Computer Simulation under the aegis of the TeachingLearning Cell, IIT(BHU) during March 2021, 2015.
1. Executed a Project
entitled “Study of Interaction Between Griffith
Cracks in Isotropic/Anisotropic Composite Media“,
under the Department of Science & Technology,
Govt. of WestBengal, INDIA. 
2. Executed a Project
entitled “Study of Interaction between cracks in
Orthotropic Composite Media”, under the Department
of Science & Technology, Govt. of WestBengal,
INDIA. 
3. A MoU has been signed
with TCS, India by virtue of which one of my
research scholars Ms. Sana P. Ansari is getting a
scholarship of Rs. 23,000/ per month for a period
of three years. 
4. One of the Team
members of the research project sub programme
sponsored by University of Malaya research
programme. Title of the proposed programme :
Stochastic dynamics, processes and models for
dispersion. Programme leader: Prof. S. H. Ong.
Research grant : RM 179,900 per year for a
duration three years. 
5. The project entitled
“Fractional calculus approached solutions for two
dimensional graound water contaminations in
unsaturated media” has been approved by Board of
Nuclear Science (BRNS), BARC, Govt. of India in
the year 2013 for the duration of three years. 
6.The ongoing project entitled “Fractional calculus approached solutions for two dimensional graound water contaminations in unsaturated media” has been approved by Board of Nuclear Science (BRNS), BARC, Govt. of India for a period of three years (2014 – 2017), Research grant: Rs. 22,95,750/. 
7.The ongoing project entitled “Study and Analysis of Mathematical Models of Nonlinear Fractional order Diffusion Equations” has been approved by SERB, Department of Science & Technology, Govt. of India for a period of three years (2015 – 2018), Research grant: Rs. 16,92,000/. 
8.The project entitled “Study of Some Engineering problems in Fractional order Dynamical Systems” has been sanctioned under Institute Research Project (for individual faculty) for a period of one year (2015 – 2016) under , Research grant: Rs. 4,02,500/. 
Contact:
Address:
Department of Mathematical Sciences,
Indian Institute of Technology(BHU),
Varanasi  221 005,
India.
Phone No. +919451141269
email : subir_das08@hotmail.com;
sdas.apm@itbhu.ac.in
