Publications

Refereed Int'l /National Journals
  1. Hari Nandan Nath, Urmila Pyakurel, Stephan Dempe, Tanka Nath Dhamala (2019), A path saving strategy with arc reversals for evacuation planning,  International Journal of Innovative Knowledge Concepts, 7(1), 160-165.
  2. Durga Prasad Khanal, Shiva Prakash Gupta, Urmila Pyakurel, Tanka Nath Dhamala (2019), An approximation for general transit time function, International Journal of Operational Research/Nepal - IJORN -8(1), 13-25.
  3. Urmila Pyakurel and Stephan Dempe (2019), Earliest arrival flow with partial lane reversals for evacuation planning, International Journal of Operational Research/Nepal - IJORN -8(1), 27-37.
  4. Santosh Gautam, Urmila Pyakurel and Tanka Nath Dhamala (2019), Generalized Dynamic Flow on Lossy Network, Journal of Institute of Science and Technology, Tribhuvan University (to appear).
  5. Durga Prasad Khanal, Urmila Pyakurel and Tanka Nath Dhamala (2018), Flow Over Time Problem with Inflow-Dependent Transit Times, Journal of the Institute of Science and Technology, Tribhuvan University, 23:49-56, DOI:  https://doi.org/10.3126/jist.v23i1.22161.
  6. Tanka Nath Dhamala, Urmila Pyakurel, Stephan Dempe (2018), A Critical Survey on the  Network Optimization Algorithms for Evacuation Planning Problems, International Journal of Operations Research (TW), 15(3), 101-133.
  7. Urmila Pyakurel, Hari Nandan Nath, Tanka Nath Dhamala (2018), Partial Contraflow with Path Reversals for Evacuation Planning, Annals of Operations Research, DOI 10.1007/s10479-018-3031-8.
  8. Ram Chandra Dhungana, Urmila Pyakurel and Tanka Nath Dhamala (2018), Abstract Contraflow Models and Solution Procedures for Evacuation Planning, Journal of Mathematics Research, 10(4), August 2018, doi:10.5539/jmr.v10n4p89
  9. Urmila Pyakurel, Hari Nandan Nath, Tanka Nath Dhamala (2018), Efficient contraflow algorithms for quickest evacuation planning, Science China Mathematics, DOI 10.1007/s11425-017-9264-3.
  10. Tanka Nath Dhamala, Urmila Pyakurel and Stephan Dempe (2018), A critical survey on the network optimization algorithms for evacuation planning problems, International Journal of Operations Research, Vol. 15, No. 3, 101-133.
  11. Urmila Pyakurel (2018); Network Flow Models for Evacuation Planning, Journal of the Institute of Engineering(JIE), 13 (1), 90-101.
  12. Urmila Pyakurel (2018); Generalized Contraflow for Evacuation Planning Problem, Journal of Nepal Mathematical Society (JNMS), 1 (1), 38-49.
  13. Urmila Pyakurel (2017); Efficient Algorithms for Contraflow Reconfiguration in Evacuation Planning, Neural, Parallel, and Scientific Computations 25 (3 & 4), 469–484.
  14. Urmila Pyakurel, Tanka Nath Dhamala and Stephan Dempe (2017), Efficient Continuous Contraflow Algorithms for Evacuation Planning Problems, Annals of Operations Research (ANOR), 1-30, DOI: 10.1007/s10479-017-2427-1.
  15. Urmila Pyakurel and Tanka Nath Dhamala (2016), Continuous Dynamic Contraflow Approach for Evacuation Planning, Annals of Operations Research (ANOR), published, 1-26, DOI: 10.1007/s10479-016-2302-5. 
  16. Urmila Pyakurel (2016), Transshipment contraflow on multi-terminal networks. The Nepal Math. Sc. Report, 34(1&2), 39-45.
  17. Urmila Pyakurel and Tanka Nath Dhamala (2016), Continuous time dynamic contraflow models and Algorithms. Advanced in Operations Research, Volume 2016, 1-6, Hindawi Publishers. 
  18. Tanka Nath Dhamala and Urmila Pyakurel (2016). Significance of transportation network models in emergency planning of urban cities. Int'l Journal of Cities, People and Places, 1(2), 58-76. 
  19. Urmila Pyakurel and Tanka Nath Dhamala (2016), Evacuation planning by earliest arrival contraflow, AIMS Journals, Journal of Industrial and Management Optimization (JIMO), doi:10.3934/jimo.201602.
  20. Urmila Pyakurel, Marc Goerigk, Tanka Nath Dhamala and Horst W. Hamacher (2016), Transit Dependent Evacuation Planning for Kathmandu Valley: A Case Study, International Journal of Operational Research Nepal, IJORN 5, 49-73.
  21. Urmila Pyakurel and Tanka Nath Dhamala (2015), Models and algorithms on contraflow evacuation planning network problems, International Journal of Operations Research (Taiwan), 12(2): 36-46.
  22. Ram Chandra Dhungana, Urmila Pyakurel, Shree Ram Khadka and Tanka Nath Dhamala (2015), Efficient algorithm on universally maximum contraflow, International Journal of Operations Research Nepal, 4, 67-78.
  23. Urmila Pyakurel, Tanka Nath Dhamala and HorstW. Hamacher (2014), Generalized maximum dynamic contraflow on lossy network, International Journal of Operational Research, Nepal, 3, 27-44.
  24. Urmila Pyakurel and Tanka Nath Dhamala (2014), Earliest arrival contraflow model for evacuation planning, Neural, Parallel, and Scientific Computations [CNLS-2013]. 01/2014; 22(3):441-450.
  25. Tanka Nath Dhamala and Urmila Pyakurel (2013), Earliest Arrival Contraflow Problem on Series- Parallel Graphs, International Journal of OR (IJOR-TW), 10, 1-13.
  26. Urmila Pyakurel, Stephan Dempe, Partial Lane Reversals of Transportation Network for Evacuation Planning, APORS 2018, August 6-9, Kathmandu, Nepal, page 29-31.  
  27. Tanka Nath Dhamala, Urmila Pyakurel, Strength and Weakness of Flow Models and Solution Strategies in Emergency Planning, APORS 2018, August 6-9, Kathmandu, Nepal, page 12.  
  28. Urmila Pyakurel, Stephan Dempe, Tanka Nath Dhamala, Network Reconfiguration with Variable Transit Times for Evacuation Planning, APORS 2018, August 6-9, Kathmandu, Nepal, pages 25-28.
  29. Hari Nandan Nath, Urmila Pyakurel, Tanka Nath Dhamala, Facility Location on Arcs for Quickest Evacuation Planning, APORS 2018, August 6-9, Kathmandu, Nepal, pages 115-117.
  30. Durga Prasad Khanal, Urmila Pyakurel, Tanka Nath Dhamala, Non-existence of EAF Inflow-dependent Transit Times, APORS 2018, August 6-9, Kathmandu, Nepal, pages 118-120.
  31. Shiva Prakash Gupta, Urmila Pyakurel, Tanka Nath Dhamala, Flow Dependent Transit Times Dynamic Flow for Evacuation Planning, APORS 2018, August 6-9, Kathmandu, Nepal, pages 125-127.
  32. Santosh Gautam, Urmila Pyakurel, Generalized Continuous Dynamic Contraflow Approach on Lossy Network, APORS 2018, August 6-9, Kathmandu, Nepal, pages 128-130.
  33. Urmila Pyakurel, Stephan Dempe and Tanka Nath Dhamala, EFFICIENT ALGORITHMS FOR FLOW OVER TIME EVACUATION PLANNING PROBLEMS WITH LANE REVERSAL STRATEGY, Preprint, 2018, TU Bergakademie Freiberg. 
  34. Tanka Nath Dhamala, Iswarmani Adhikari, Hari Nandahn Nath and Urmila Pyakurel (2018); Meaningfulness of OR Models and Solution Strategies for Emergency Planning, Book Chapter: Living with the Threat of Earthquakes, , pp 175-194, Springer Natural Hazards.
  35. Tanka Nath Dhamala, Ram Chandra Dhungana, Urmila Pyakurel (2017); Dynamic Flow Models and Algorithms for Evacuation Planning, Proceedings of the International Conference on Computational Modelling and Simulation (ICCMS-2017), Sri-Lanka, pp 307-311.
  36. Tanka Nath Dhamala, Shree Ram Khadka and Urmila Pyakurel (2015), OR Models for Evacuation Planning: Kathmandu Metropolitan Perspective, Proceedings of the 7th National Conference of ORSN,  February 1-2, 95-106, Kathmandu, Nepal.
  37. Shree Ram Khadka, Tanka Nath Dhamala and Urmila Pyakurel (2015), On the Auto Based Contraflow Evacuation Planning, Proceedings of the 7th National Conference of ORSN,  February 1-2,  81-86, Kathmandu, Nepal.
  38. Urmila Pyakurel and Tanka Nath Dhamala (2014), Lexicograpic contraflow problem for evacuation planning, Proc. of Int’l Conference, ORSN, February 1-2, 287-294, Chitwan, Nepal.
  39. Urmila Pyakurel and Tanka Nath Dhamala (2013), Earliest arrival contraflow problem for evacuation planning, Second National Conference on Operations Research: Applications in Developing Countries, organized by Operational Research Society of Nepal, February 1-2.
  40. Urmila Pyakurel and Tanka Nath Dhamala (2012), Emergency Facility Location on Contraflow Transportation Network for Evacuation Planning, ORSN International Conference, Kathmandu, Nepal, February 1-2.