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Research Paper Published/Accepted for Publication

  • Shekhar, C., Gupta, A., Kumar, N., Kumar, A. and Varshney, S.: ‘Transient Solution of Multiple Vacation Queue with Discouragement and Feedback’, Scientia Iranica (SCI, Q2, IF 1.44, SNIP 0.542, SJR 0.299) (Accepted), http://scientiairanica.sharif.edu/article_22021.html
  • Shekhar, C., Malik, A.K., Thakkar, V.A. and Mishra, R.P.: ‘Optimal inventory cost for deteriorating items with partial backlogging using particle swarm optimization’, Yugoslav Journal of Operations Research (Scopus, Q4, SJR 0.22) (Accepted).
  • Shekhar, C., Varshney, S. and Kumar, A. (2021): ‘Matrix-geometric solution of multi-server queueing systems with Bernoulli scheduled modified vacation and retention of reneged customers: A meta-heuristic approach’, Quality Technology & Quantitative Management (Taylor & Francis) (SCIE, Q1, IF 3.13, SNIP 1.686, SJR 1.13), Vol. 18, No. 1, pp 39-66, DOI 10.1080/16843703.2020.1755088.
  • Shekhar, C., Kumar, A. Varshney, S. and Ammar, S.I. (2021): ‘M/G/1 fault-tolerant machining system with imperfection’, Journal of Industrial and Management Optimization (SCIE, Q3, IF 1.80, SNIP 0.655, SJR 0.33), Vol. 17, No. 1, pp 1-28, DOI 10.3934/jimo.2019096.
  • Shekhar, C., Deora, P., Varshney, S., Singh, K.P. and Sharma, D.C. (2021): ‘Optimal profit analysis of machine repair problem with repair in phases and organizational delay’, International Journal of Mathematical, Engineering and Management Sciences (ESCI, Scopus, Q3, SNIP 0.682, SJR 0.23), Vol. 6, No. 1, pp 442-468, DOI 10.33889/IJMEMS.2021.6.1.027.
  • Shekhar, C., Kumar, N., Gupta, A., Kumar, A. and Varshney, S. (2020): ‘Warm-spare provisioning computing network with switching failure, common cause failure, vacation interruption, and synchronized reneging’, Reliability Engineering and System Safety (Elsevier) (SCI, Q1, IF 6.19, SNIP 2.707, SJR 1.76), Vol. 199,  pp 106910 (DOI 10.1016/j.ress.2020.106910).
  • Shekhar, C., Kumar, A. and Varshney, S. (2020): ‘Load sharing redundant repairable systems with switching and reboot delay’, Reliability Engineering & System Safety (Elsevier) (SCI, Q1, IF 6.19, SNIP 2.707, SJR 1.76), Vol. 193, pp. 106656, (DOI. 10.1016/j.ress.2019.106656).
  • Shekhar, C., Varshney, S. and Kumar, A. (2020): ‘Optimal control of a service system with emergency vacation using bat algorithm’, Journal of Computational and Applied Mathematics (Elsevier) (SCI, Q2, IF 2.62, SNIP 1.663, SJR 0.88), Vol. 364, 112332 (DOI 10.1016/j.cam.2019.06.048).
  • Shekhar, C., Varshney, S. and Kumar, A. (2020): ‘Optimal and Sensitivity Analysis of Vacation Queueing System with F-Policy and Vacation Interruption’, Arabian Journal for Science and Engineering, (Springer) (SCIE, Q2, IF 2.33, SNIP 1.035, SJR 0.36), Vol. 45, No. 8, pp. 7091-7107, DOI 10.1007/s13369-020-04690-5.
  • Shekhar, C., Kumar, A., Varshney, S. and Ammar, S. I. (2020): ‘Fault-tolerant redundant repairable system with different failures and delays’, Engineering Computations, (Emerald) (SCIE, Q2, IF 1.59, SNIP 0.624,  SJR 0.31), Vol. 37, No. 3, pp 1043-1071 (DOI 10.1108/EC-01-2019-0003).
  • Shekhar, C., Gupta, A., Jain, M. and Kumar, N. (2020): ‘Transient analysis of computing system with reboot and recovery delay’, International Journal of Quality and Reliability Management (Emerald) (Scopus, Q2, SNIP 1.314, SJR 0.54), Vol. 37, No. 6-7, pp 983-1005, DOI 10.1108/IJQRM-09-2019-0306.
  • Shekhar, C., Kumar, N., Jain, M. and Gupta, A. (2020): ‘Reliability prediction of computing network with software and hardware failures’, International Journal of Reliability, Quality and Safety Engineering (World Scientific) (Scopus, Q3, SNIP 0.559, SJR 0.25), Vol. 27, No. 2, pp 2040006 (DOI 10.1142/S0218539320400069).
  • Shekhar, C., Kumar, A., and Varshney, S. (2020): ‘Parametric nonlinear programming for fuzzified queuing systems with catastrophe’, International Journal of Process Management and Benchmarking (INDERSCIENCE) (Scopus, Q3, SNIP 0.624, SJR 0.32), Vol. 10, No. 1, pp 69-98.
  • Shekhar, C., Kumar, A., and Varshney, S. (2019): ‘Modified Bessel series solution of the single server queueing model with feedback’, International Journal of Computing Science and Mathematics (INDERSCIENCE) (Scopus, Q4, SNIP 0.489, SJR 0.18), Vol. 10, No. 3, pp 313-326 (DOI: 10.1504/IJCSM.2019.101101).
  • Jain, M., Shekhar, C., and Meena, R.K. (2019): ‘Performance analysis and control F-policy for fault-tolerant system with working vacation’, OPSEARCH (Springer) (Scopus, Q2, SNIP 0.993, SJR 0.35), Vol. 56, No. 2, pp 409-431 (DOI 10.1007/s12597-019-00369-0).
  • Kumar, K., Jain, M. and Shekhar, C. (2019): ‘Machine repair system with F-policy, two unreliable servers and warm standbys’, Journal of Testing and Evaluation (ASTM International) (SCI, Q3, IF 1.26, SNIP 0.564, SJR 0.3), Vol. 47, No. 1, pp 361-383 (DOI 10.1520/JTE20160595).
  • Kumar, S., Singh, P., Singh, P. and Shekhar, C. (2018): ‘Estimation of scattering and intrinsic attenuation based on multiple lapse time window analysis in Sikkim Himalayan region, India’, Physics of the Earth and Planetary Interiors (Elsevier) (SCIE, Q1, IF 2.26, SNIP 1.093, SJR 1.1), Vol. 284, pp 1-9.
  • Shekhar, C., Jain, M., Iqbal, J. and Raina, A.A. (2018): ‘Reliability prediction of fault tolerant machining system with reboot and recovery delay’, International Journal of System Assurance Engineering and Management (Springer) (Scopus, Q3, SNIP 1.014, SJR 0.3), Vol. 9, No. 2, pp 377-400 (DOI 10.1007/s13198-017-0680-y).
  • Jain, M., Shekhar, C. and Meena, R.K. (2017): ‘Admission control policy of maintenance for unreliable server machining system with working vacation’, Arabian Journal for Science and Engineering (Springer) (SCIE, Q2, IF 2.33, SNIP 1.035, SJR 0.36), Vol. 42, No. 7, pp 2993-3005.
  • Shekhar, C., Jain, M., Iqbal, J. and Raina, A.A. (2017): ‘Threshold control policy for maintainability of manufacturing system with unreliable workstations’, Arabian Journal for Science and Engineering (Springer) (SCIE, Q2, IF 2.33, SNIP 1.035, SJR 0.36), Vol. 42, No. 11, pp 4833-4851. 
  • Shekhar, C., Jain, M., Raina, A.A. and Mishra, R.P. (2017): ‘Sensitivity analysis of repairable redundant system with switching failure and geometric reneging’, Decision Science Letters (Growing Science) (Scopus, Q3, SNIP 0.895, SJR 0.38), Vol. 6, No. 4, pp 337-350.
  • Shekhar, C., Raina, A.A., Kumar, A. and Iqbal, J. (2017): ‘A survey on queues in machining systems: progress from 2010 to 2017’, Yugoslav Journal of Operations Research (Scopus, Q4, SJR 0.22), Vol. 27, No. 4, pp 391-413. 
  • Shekhar, C., Jain, M., Raina, A.A., Iqbal, J. (2017): ‘Optimal (N, F) policy for queue-dependent and time-sharing machining redundant system’, International Journal of Quality and Reliability Management (Emerald) (Scopus, Q2, SNIP 1.314, SJR 0.54), Vol. 34, No. 6, pp 798-816.
  • Shekhar, C., Jain, M. and Raina, A.A. (2017): ‘Transient analysis of machining system with spares provisioning and geometric reneging’, International Journal of Mathematics in Operational Research (INDERSCIENCE) (Scopus, Q3, SNIP 0.714 SJR 0.35), Vol. 11, No. 3, pp 396-421. 
  • Jain, M., Shekhar, C. and Shukla, S. (2016): ‘N-policy for a repairable redundant machining system with controlled rates’, RAIRO-Operations Research (Cambridge Journals) (SCIE, Q3, IF 1.39, SNIP 0.834, SJR 0.38), Vol. 50, pp 891-907.
  • Jain, M., Shekhar, C. and Shukla, S. (2016): ‘Queueing analysis of machine repair problem with controlled rates and working vacation under F-policy’, Proceedings of the National Academy of Sciences, India Section A: Physical Sciences (Springer) (SCIE, Q3, IF 1.54, SNIP 0.722, SJR 0.21), Vol. 86, No. 1, pp. 21-31.
  • Jain, M., Shekhar, C. and Shukla, S. (2016): ‘A time-shared machine repair problem with mixed spares under N-policy’, Journal of Industrial Engineering International (Springer) (Scopus, Q2, SNIP 1.384, SJR 0.39), Vol. 12, No. 2, pp. 145-157, DOI 10.1007/s40092-015-0136-4.
  • Vashisth, V., Tomar, A., Shekhar, C., Malik, A.K. (2016): ‘A trade credit inventory model with multivariate demand for non-instantaneous decaying products’, Indian Journal of Science and Technology (Scopus, Q4, SNIP 1.270, SJR 0.11), Vol. 9, No. 15, pp. 1-6, DOI: 10.17485/ijst/2016/v9i15/84213. 
  • Shekhar, C., Raina, A.A. and Kumar, A. (2016): ‘A brief review on retrial queue: Progress in 2010-2015’, International Journal of Applied Science and Engineering Research, Vol. 5, No. 4, pp 324-336.
  • Jain, M., Bhagat, A. and Shekhar, C. (2015): ‘Double orbit finite retrial queues with priority customers and service interruptions’, Applied Mathematics and Computation (Elsevier) (SCI, Q1, IF 4.09, SNIP 1.702, SJR 0.97), Vol. 253, pp. 324-344.
  • Singh, H., Shekhar, C. and Kumar, S. (2015): ‘Statistical study of yoga on mental health among children of the residential school’, International Journal of Allied Practice, Research and Review, Vol. 2, No. 5, pp. 9-14.
  • Singh, H., Shekhar, C., and Kumar, S. (2015): ‘Assessment of the yoga on the status of the physical fitness among children of the residential school’, International Journal of Latest Technology in Engineering, Management and Applied Science, Vol. 4, No. 3, pp. 16-20.
  • Mehrotra, R., Jain, V., Shekhar, C. and Mehrotra, S. (2014): ‘Genome wide analysis as Arabidopsis Thaliana reveals high frequency of AAAGN7CTTT motif’, Meta Gene (Elsevier) (Scopus, Q4, SNIP 0.294, SJR 0.2), Vol. 2, pp. 606-615.
  • Jain, M., Shekhar, C. and Shukla, S. (2014): ‘Machine repair problem with an unreliable server and controlled arrival of failed machines’, OPSEARCH (Springer) (Scopus, Q2, SNIP 0.993, SJR 0.35), Vol. 51, No. 3, pp. 416-433.
  • Jain, M., Shekhar, C. and Rani, V. (2014): ‘N policy for a multi-component machining system with imperfect coverage, reboot and unreliable server’, Production and Manufacturing Research (Taylor and Francis) (Scopus, Q2, SNIP 1.639, SJR 0.55), Vol. 2, No. 1, pp. 457-476.
  • Jain, M., Shekhar, C. and Shukla, S. (2014): ‘Vacation queueing model for a machining system with two unreliable repairmen’, International Journal of Operational Research (INDERSCIENCE) (Scopus, Q3, SNIP 0.534, SJR 0.31), Vol. 20, No. 4, pp. 469-491.
  • Shekhar, C., Jain, M. and Bhatia, S. (2014): ‘Fuzzy analysis of machine repair problem with switching failure and reboot’, Journal of Reliability and Statistical Studies, Vol. 7, pp. 41-55.
  • Jain, M., Shekhar, C. and Shukla, S. (2014): ‘Markov model for switching failure of warm spares in machine repair system’, Journal of Reliability and Statistical Studies, Vol. 7, pp. 57-68.
  • Jain, M., Shekhar C. and Shukla, S. (2013): ‘Queueing analysis of two unreliable servers machining system with switching and common cause failure’, International Journal of Mathematics in Operational Research (INDERSCIENCE) (Scopus, Q3, SNIP 0.714 SJR 0.35), Vol. 5, No. 4, pp 508-536.
  • Shekhar, C. and Jain, M. (2013): ‘Finite queueing model with multitask servers and blocking’, American Journal of Operational Research (SAP), Vol. 3, No. 2A, pp 17-25. 
  • Jain, M., Shekhar, C. and Shukla, S. (2012): ‘Queueing Analysis of a Multi-component Machining System having Unreliable Heterogeneous Servers and Impatient Customers’, American Journal of Operations Research (SAP), Vol. 2, No. 3, pp. 16-26.
  • Jain, M., Sharma, G.C. and Shekhar, C. (2005): ‘Processor shared service system with queue dependent processors’, Computers and Operations Research (Elsevier) (SCI, Q1, IF 4.008, SJR 1.51), Vol. 32, No. 3, pp. 629-645.
  • Jain, M., Shekhar, C. and Baghel, K.P.S. (2003): ‘M/G/1 system with standbys and common cause failure’, Journal of Rajasthan Academy of Physical Science, Vol. 2, No. 4, pp. 239-250. (Abstract published in souvenir of National Conference on modern Mathematics application to information technology, Agra, March 8-9, 2003, pp. 34).
  • Chikara, D., Jain, M. and Shekhar, C. (2003): ‘Markovian modeling of multi-node communication system with heterogeneous traffic’, International Journal of Information and Computing Science, Vol. 6, No. 1, pp. 10-21.
  • Jain, M. and Shekhar, C. (2002): ‘Transient analysis of state-dependent multiprocessor system’ International Journal of Information and Computing Science, Vol. 5, No. 2, pp. 42-52. 
  • Jain, M. and Shekhar, C. (2002): ‘State-dependent multi-channel queuing system with ordered entry’, International Journal of Engineering Transaction A (Scopus, Q3, SJR 0.23), Vol. 15, No. 3, pp. 275-286.
  • Jain, M., Shekhar, C. and Singh, P. (2002): ‘Loss-delay queueing model for time-shared system with additional service position and nopassing’, International Journal of Information and Computing Science, Vol. 5, No. 1, pp. 12-25.
  • Jain, M. and Shekhar, C. (2001): ‘State-dependent queue with two types of customers and alternate service in pieces’, Gujrat Statistical Review, Vol. 28, No. 1-2, pp. 11-24.

Research Paper Published in Proceedings

  • Malik, A.K., Shekhar, C., Vashisth, V., Chaudhary, A.K., Singh, S.R. (2016): ‘Sensitivity analysis of an inventory model with non-instantaneous and time-varying deteriorating items’, AIP Conference Proceeding of Advancement in Science and Technology (SNIP 0.300): Proceeding of the 2 nd International conference on communication systems (ICCS 2015) organized by BKBIET, Pilani, 1715, 020059; DOI: 10.1063/1.4942741.
  • Jain, M., Shekhar, C. and Kumari, R. (2014): ‘Reliability analysis of K-out of N system with controllable rates, common cause failure and warm standbys’, Electronic proceedings of the International Conference on Emerging Trends in Global Management Practices-An interdisciplinary approach, Symboisis centre for Management Studies, Noida, 7-8 March’2014 (ISBN 978-81-928678-0-9), pp. 1-23.
  • Jain, M., Shekhar, C. and Shukla, S. (2011): ‘A study of switching failure of warm spares in machine repair system with heterogeneous servers’, Proceeding of the International Conference on Advances in Modeling, Optimization and Computing (AMOC-2011), Department of Mathematics, IIT Roorkee, 05-07 December’2011, pp. 472-481.
  • Shekhar, C., Karthik, V.N., and Saye Kiran (2007): ‘Transient analysis of a Two-stage flow shop with scrap, rework, workstation failure and finite buffers’, Electronic proceeding of Global Conference on Production and Industrial Engineering (CPIE 2007) held at National Institute of Technology, Jalandhar on March 22-24’2007 (Abstract published in Souvenir pp. 71).
  • Shekhar, C., Jain, M. and Karthik, V.N. (2006): ‘Performance modeling of N-dissimilar units parallel system with organizational delay and setup time’, Electronic proceeding of the International Conference on Global Manufacturing and Innovation-GMI2006, Coimbatore Institute of Technology, Coimbatore, July 27-29’2006 [Abstract published in Souvenir pp. 16.] Awarded the best research paper of conference.
  • Shekhar, C. and Jain, M. (2006): ‘A comparative study between with and without finite buffer for multi-processor systems’, Proceeding of the Seminar on Recent trends in Science, Technology and its Application, Muzaffarnagar, January 7-8’2006 (eds. Dr. S.N. Chauhan and Dr. A.K. Shukla), pp. 33-40.
  • Chikara, D., Shekhar, C., Jain, M. and Pundir, N. (2006): ‘Queueing analysis of alternating service mechanism for a machine interference problem’, Proceeding of the Seminar on Recent trends in Science, Technology and its Application, Muzaffarnagar, January 7-8’2006 (eds. Dr. S.N. Chauhan and Dr. A.K. Shukla), pp. 53-58.
  • Shekhar, C., Karthik, V.N. and Jain, M. (2005): ‘Non-transient analysis of a multi-phase service system with probabilistic forking’, Proceeding of National Seminar on Mathematics and Computer Science (NSOMACS- 2005), Krishna Prakashan Media (P) Ltd. (ed. Dr. S.K. Pundir), November 29-30’2005, pp.375-390.
  • Jain, M. and Shekhar, C. (2002): ‘Reliability analysis of gracefully degradable multi-processor system’, Electronic proceedings of International Conference on Operational Research and its Development and XXXV annual convention of the ORSI, December 27-30’2002 (F-39).
  • Jain, M., Shekhar, C. and Singh P. (2002): ‘Time sharing queueing model with queue dependent service positions’, Proceeding of National Seminar on Emerging convergent technologies and systems (SECTAS-2002), Allied Pub. Ltd., Delhi (ed. Prof. S.B. Rao), pp. 405-410.
  • Jain, M., Singh, P. and Shekhar, C. (2002): ‘Flow model of queueing network: an optimal control approach’, Proceeding of National Seminar on Emerging convergent technologies and systems (SECTAS-2002), Allied Pub. Ltd., Delhi (ed. Prof. S.B. Rao), pp. 374-380.
  • Jain, M. and Shekhar, C. (2001): ‘Performance modeling for time-shared queueing system’, Proceeding of XXXIV Annual convention of ORSI and an International Conference on Operational Research and National Development, Kolkata, December 27-29’2001, pp. 131-133.
  • Jain, M. and Shekhar, C. (2001): ‘Finite queueing model with multi-purpose counters’, Proceeding of International Conference on Mathematical Modeling, Roorkee, January 29-31’2001, pp. 257-262.
  • Jain, M. and Shekhar, C. (2000): ‘Transient analysis of state-dependent multiprocessor system’, Proceeding of Recent Advances in Operations Research, Information Technology and Industry, Anamaya Publishers, New Delhi (eds. M. Jain and G.C. Sharma), pp. 139-150.

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