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Dr. E.M.U.S.B. Ekanayake

Senior Lecturer

uthpalaekana@as.rjt.ac.lk
+94252266129

Education

  • Ph.D. in Mathematics, PGIS, University of Peradeniya, 2023
  • MPhil in Mathematics, Gunma University, Japan, 1995
  • B.Sc (Honors) in Mathematics, University of Peradeniya, 1988

Awards and Recognitions

  • RUSL Research Excellence Awards 2025
    • Top Ten Researchers with the highest h-Index – 4th  Place
    • Top Ten Researchers with the highest number of Citations – 10th Place
    • Top Ten Researchers having the highest h-Index – Faculty of Applied Sciences – 1st  Place
    • Top Ten Researchers having the highest number of citations – Faculty of Applied Sciences – 3rd  Place
    • Recognitions for the indexed articles published in the preceding year – Faculty of Applied Sciences

Appointments and Experience

  • December 2009 – Present: Senior Lecturer, Rajarata University of Sri Lanka.
  • November 1995 – November 2009: Assistant Director, Industrial Development Board.
  • June 1992 – December 1992: Instructor (Temporary), Department of Engineering Mathematics, Faculty of Engineering, University of Peradeniya.
  • May 1990 – May 1992: Assistant Lecturer (Temporary), Department of Mathematics, Faculty of Science, University of Peradeniya.

Other Professional Activities

  • Senate nominee to the Senate of Rajarata University of Sri Lanka  (2022 – Present).                                                                         
  • Member of Examination Disciplinary Committee, Rajarata University of Sri Lanka   (2023 – Present).
  • Student Counsellor (October 2010 – October 2011), Faculty of Applied Sciences, Rajarata University of Sri Lanka.
  • Member of Introduction of Technology Streams for Higher Education (2016).
  • University Representative to the Organizing Committee of the Fourth Conference on Sri Lanka Japan Collaborative (SLJCER-2016).
  • Member of the International Association of Engineers (IAENG).   

Participation in Continuing Professional Development

  1. Coordinator & Resource Person for O/L Teacher Training Program conducted by the North Central Province by the Faculty of Applied Sciences 2014.
  2. Coordinator & Resource Person for A/L Teacher Training Program conducted by the North Central Province by the Faculty of Applied Sciences 2016.
  3. Coordinator & Resource Person for A/L Teacher Training Program conducted by the North Central Province by the Faculty of Applied Sciences 2019.
  4. Subject Coordinator – A/L Workshop for students from North Central Province, 2010, 2015, 2016,  2017.
  5. Subject Matter Expert – BSc External Online Degree Programs – MAT2433 – Descrete Mathematics, 2012.
  6. Subject Matter Expert – BSc External Online Degree Programs – MAT2424 – Computational Mathematics, 2012.
  7. Subject Matter Expert – BSc External Online Degree Programs – MAT2433 – Descrete Mathematics, 2013.
  8. Subject Matter Expert – BSc External Online Degree Programs – MAT2424 – Computational Mathematics, 2013.
  9. Subject Matter Expert – BSc External Online Degree Programs – MAT2331 – Abstract Algebra II, 2014.
  10. Subject Matter Expert – BSc External Online Degree Programs – MAT3633 – Advanced Computational Mathematics, 2014.
  11. Subject Matter Expert – BSc External Online Degree Programs – MAT2331 – Abstract Algebra II, 2015.
  12. Subject Matter Expert – BSc External Online Degree Programs – MAT3633 – Advanced Computational Mathematics, 2015.
  13. Subject Matter Expert – BSc External Online Degree Programs – MAT1234 – Mathematical Analysis, 2015.
  14. Subject Matter Expert – BSc External Online Degree Programs – STA3633 – Stochastic Process and Applications, 2015.
  15. Subject Matter Expert – BSc External Online Degree Programs – MAT1234 – Mathematical Analysis, 2016.
  16. Subject Matter Expert – BSc External Online Degree Programs – MAT2433 – Descrete Mathematics, 2016.
  17. Subject Matter Expert – BSc External Online Degree Programs – MAT2424 – Computational Mathematics, 2016.
  18. Subject Matter Expert – BSc External Online Degree Programs – STA3633 – Stochastic Process and Applications, 2016.
  19. Subject Matter Expert – BSc External Online Degree Programs – STA1121 – Introduction to Probability Theory, 2016.
  20. Subject Matter Expert – BSc External Online Degree Programs – STA1132 – Introduction to Statistics, 2016.
  21. Subject Matter Expert – BSc External Online Degree Programs – MAT1131 – Abstract Algebra I, 2016.
  22. Subject Matter Expert – BSc External Online Degree Programs – MAT2331 – Abstract Algebra II, 2016.
  23. Subject Matter Expert – BSc External Online Degree Programs – MAT3633 – Advanced Computational Mathematics, 2016.
  24. Subject Matter Expert – BSc External Online Degree Programs – MAT2433 – Descrete Mathematics, 2017.
  25. Subject Matter Expert – BSc External Online Degree Programs – MAT2424 – Computational Mathematics, 2017.
  26. Subject Matter Expert – BSc External Online Degree Programs – MAT2322 – Modern Applied Mathematics, 2017.
  27. Subject Matter Expert – BSc External Online Degree Programs – MAT3633 – Advanced Computational Mathematics, 2017.
  28. Subject Matter Expert – BSc External Online Degree Programs – MAT2433 – Descrete Mathematics, 2017.
  29. Subject Matter Expert – BSc External Online Degree Programs – MAT2424 – Comput tional Mathematics, 2017.
  30. Subject Matter Expert – BSc External Online Degree Programs – STA3633 – Stochastic Process and Applications, 2017.
  31. Subject Matter Expert – BSc External Online Degree Programs – STA3624 – Time Series Analysis and Forecasting, 2017.
  32. Subject Matter Expert – BSc External Online Degree Programs – MAT1234 – Mathematical Analysis, 2018.
  33. Subject Matter Expert – BSc External Online Degree Programs – MAT2433 – Descrete Mathematics, 2018.
  34. Subject Matter Expert – BSc External Online Degree Programs – MAT2424 – Computational Mathematics, 2018.
  35. Subject Matter Expert – BSc External Online Degree Programs – STA3633 – Stochastic Process and Applications, 2019.
  36. Subject Matter Expert – BSc External Online Degree Programs – MAT2322 – Modern Applied Mathematics, 2019.
  37. Subject Matter Expert – BSc External Online Degree Programs – MAT3633 – Advanced Computational Mathematics, 2019.

Curriculum Planning and Development

  1. Member, Curriculum Review Committee in Mathematics, Faculty of Applied Sciences, Rajarata University of Sri Lanka.
  2. Member: Preparation of SER (Physical Sciences), in year 2016.
  3. Member: Preparation of SER for external study programmes, in year 2016.
  4. Member: Preparation of SER for external study programmes, in year 2023.
  5. Developing materials for Statistics Diploma in BSc online Degree Program.

External Examiner

  • Ms. R.M.S.W.Wijerathna, Masters of Sciences in Environmental of Sciences, Environmental Studies Unit, The Open University of Sri Lanka, 2013.

Editorial Experience

  • Reviewer, Asian Research Journal of Mathematics, Date: 24.05.2025, Validation Link: https://reviewer.reviewerhub.org
  • Reviewer, Asian Research Journal of Mathematics, Date: 27-Dec-2023, Certificate No: SDI/HQ/PR/Cert/111283/DRU
  • Reviewer, Asian Research Journal of Mathematics, Date: 1-Dec-2023, Certificate No: SDI/HQ/PR/Cert/10138 /DRU
  • Reviewer, International Conference on Mathematics and Mathematics Education (ICMME) 2023, University of Peradeniya.
  • Reviewer, International Conference, Faculty of Technology, Rajarata University Journal 2021

Research Interests

  • Optimization problems in operations research and development.
  • Vehicle assignment, transportation, and routing approaches.
  • Graph theory and network analysis.
  • Application of modified Ant Colony Algorithm to optimization problems.

Research Articles

  1. Tharika Ekanayake and Uthpala Ekanayke. Solving Triangular Fuzzy Transportation Problem Using Modified Fractional Knapsack Problem; October 2023; American Journal of Applied Mathematics 11(5):77-88.DOI: 10.11648/j.ajam.20231105.11
  2. Oshan Niluminda and Uthpala Ekanayake. Graph Colouring to Solve both Balanced and Unbalanced Transportation Problems; American Journal of Traffic and Transportation Engineering 8(6):135-144; DOI: 10.11648/j.ajtte.2023-0806.12
  3. Oshan Niluminda and Uthpala Ekanayake. The Novel Efficient Method to Solve Balanced and Unbalanced Profit Maximization in Transportation Problems; October 2023; American Journal of Mathematical and Computer Modelling 8(2):17-24; DOI: 10.11648/j.ajmcm.20230802.11.
  4. E. M. U. S. B. Ekanayake, S. P. C. Perera, W. B. Daundasekara and Z. A. M. S. Juman. A Modified Ant Colony Optimization Algorithm for Solving a Transportation Problem – Journal of Advances in Mathematics and Computer Science, 2020
  5. E. M. U. S. B. Ekanayake, S. P. C. Perera, W. B. Daundasekara. An Approach for Solving Minimum Spanning Tree Problem and Transportation Problem Using Modified Ant Colony Algorithm – North American Academic Research, 2020
  6. E. M. U. S. B. Ekanayake, W. B. Daundasekara, S. P. C. Perera, and Z. A. M. S. Juman. An Effective Alternative New Approach in Solving Transportation Problems – American Journal of Electrical and Computer Engineering, 2021
  7. E. M. U. S. B. Ekanayake, W. B. Daundasekara, and S. P. C. Perera. Solution of a Transportation Problem using Bipartite Graph – Global Journal of Science Frontier Research: F Mathematics and Decision Sciences, 2021
  8. E. M. U. S. B. Ekanayake, W. B. Daundasekara, and S. P. C. Perera. New Approach to Obtain the Maximum Flow in a Network and Optimal Solution for the Transportation Problems – Modern Applied Science; Published by Canadian Center of Science and Education, 2022
  9. E. M. U. S. B. Ekanayake. An Improved Ant Colony Algorithm to Solve Prohibited Transportation Problems-International Journal of Applied Mathematics and Theoretical Physics, 2022
  10. E. M. U. S. B. Ekanayake, W. B. Daundasekara, and S. P. C. Perera. An Examination of Different Types of Transportation Problems and Mathematical Models – American Journal of Mathematical and Computer Modelling, 2022
  11. Ekanayake E. M. U. S. B. Novel Method for Solving Balance and Unbalance Assignment Problem Using New Approach for Ant Colony Algorithm. Mathematical Modelling and Applications. Vol. 6, No. 4, 2021, pp. 101-106. doi: 10.11648/j.mma.20210604.13
  12. E.M.U.S.B E. Ekanayake. Geometric Mean Method Combined With Ant Colony Optimization Algorithm to Solve Multi-Objective Transportation Problems in Fuzzy Environments. J Electrical Electron Eng.,2022, 1(1), 39-47.
  13. E.M.U.S.B E. Ekanayake. To Use an Ant Colony Technique to Solve a Crispy Type Bi- and Tri-Objective Transportation Problem, Journal of Computational and Cognitive Engineering, 2023
  14. Kankanam Pathiranage Oshan Niluminda, Ekanayake Mudiyanselage Uthpala Senarath Bandara Ekanayake. An Approach for Solving Minimum Spanning Tree Problem Using a Modified Ant Colony Optimization Algorithm. American Journal of Applied Mathematics. Vol. 10, No. 6, 2022, pp. 223-235. doi: 10.11648/j.ajam.20221006.11
  15. Niluminda K.P.O, Ekanayake E.M.U.S.B. Innovative Matrix Algorithm to Address the Minimal Cost-Spanning Tree Problem. J Electrical Electron Eng, 2022,1(1), 148-153.
  16. K.P.O.Niluminda, E.M.U.S.B.Ekanayake. Kruskal’s algorithm for solving the both balanced unbalanced acceptable and prohibited route transportation problems. North American Academic Research,2022, 5(12), 17-33. doi:https://doi.org/10.5281/zenodo.7457110
  17. K.P.O.Niluminda, E.M.U.S.B.Ekanayake. An efficient method to solve minimum spanning tree problem using graph theory and improved ant colony optimization algorithm. North American Academic Research, 5(12),2022, 34-43. doi:https://doi.org/10.5281/zenodo.7459058
  18. K.P.O.Niluminda, E.M.U.S.B.Ekanayake. The Multi-Objective Transportation Problem Solve with Geometric Mean and,Penalty Methods,. Indonesian Journal of Innovation and  Applied Sciences (IJIAS)Journal;https://ojs.literacyinstitute.org/index.php/ijias ISSN: 2775-4162 ,2023,74-75.
  19. E.M.D.B. Ekanayake, E.M.U.S.B. Ekanayake. Solving Multi Objective Transportation Problems using Harmonic Mean and Graph Theory. J Electrical Electron Eng,2022, 1(1), 115-130.
  20. E. M. D. B. Ekanayake, E. M. U. S. B. Ekanayake. A Ratio-Based approach to identifying the most basic feasible solution to bottleneck transportation problems. North American Academic Research, 2022,5(12), 112-127. doi:https://doi.org/10.5281/zenodo.7522835
  21. E.M.D.B. Ekanayake, E. M. U. S. B. Ekanayake. A Novel Approach Algorithm for Determining the Initial Basic Feasible Solution for Transportation Problems, Indonesian Journal of Innovation and Applied Sciences (IJIAS)Journal;https://ojs.literacyinstitute.org/index.php/ijias ISSN: 2775-4162 ,2023,234-246.
  22. E. M. D. B.Ekanayake, E. M. U. S. B. Ekanayake. Performance of the Best Solution for the Prohibited Route Transportation Problem by an Improved Vogels Approximation Method. Indonesian Journal of Applied Research (IJAR),2022, 3(3), 190-206. https://doi.org/10.30997/ijar.v3i3.241
  23. Ekanayake Mudiyanselage Dananjaya Bandara Ekanayake, Ekanayake Mudiyanselage Uthpala Senarath Bandara Ekanayake. An Average Based Method for Finding the Basic Feasible Solution for the Fuzzy Transportation Problems. American Journal of Applied Scientific Research. Vol. 9, No. 1, 2023, pp. 1-13. doi: 10.11648/j.ajasr.20230901.11
  24. Tharaka Ruwan and Uthpala Ekanayake. A Cryptography Algorithm Using Laplace Transformation. October 2024, International Journal of Integrative Sciences Vol.3(No.9):1053-1066;DOI: 10.55927/ijis.v3i9.10486
  25. Dinushi Dhananjalee and Uthpala Ekanayke. An Effective Method of Graceful Labeling for Pendant Graphs; October 2024; International Journal of Integrative Sciences Vol.3, No.9, 2024: 1035-1052:1035-1052; DOI: 10.55927/ijis.v3i9.10487

Abstracts

  1. M.H.H.D.N. Premathilaka and Uthpala Ekanayake. Probabilistic Penalty Approaches the Balanced Transportation Problem Using the Ant Colony Algorithm. International Research Symposium of Rajarata University of Sri Lanka(October 2025)
  2. Tharaka Ruwan and Uthpala Ekanayake. Efficient Resource Use in Practical Course Scheduling via the Enhanced Welsh-Powell Method. International Research Symposium of Rajarata University of Sri Lanka(October 2025).
  3. Tharika Ekanayake and Uthpala Ekanayke. A Creative Method for Using Harmonic Mean to Solve Tri-Objective Transportation Problems. 21st International Conference on Business Management (ICBM 2025).
  4. Tharaka Ruwan and Uthpala Ekanayake. Hybrid Optimization Using Ant Colony Algorithm Combining with Different Means to Find the Solution to the Traveling Salesman Problem, 21st International Conference on Business Management (ICBM 2025)
  5. Dinushi Dhananjalee and Uthpala Ekanayke. A Modified Genetic Algorithm Approach for Solving Balanced and Unbalanced Assignment Problems, 21st International Conference on Business Management (ICBM 2025).
  6. Tharaka Ruwan and Uthpala Ekanayake. Hybrid optimization method combining revised ant colony algorithm and geometric mean to solve the traveling salesman problem, February 2025,Ruhuna International Science & Technology Conference (RISTCON’ 2025).
  7. Dinushi Dhananjalee and Uthpala Ekanayke. An improvement of the restructured Vogel’s approximation technique for both balanced and unbalanced transportation problems. February 2025, Ruhuna International Science & Technology Conference (RISTCON’ 2025).
  8. Koshila Ekanayake and Uthpala Ekanayake. A Novel Approach for Determining Penalty Costs in Vogel’s Approximation for Solving Balanced and Unbalanced Transportation Problems, 21st International Conference on Business Management (ICBM 2025).
  9. Lakshani Amarasinghe and Uthpala Ekanayke. One dimensional cutting stock problem using the decreasing even-odd method. February 2025, Ruhuna International Science & Technology Conference (RISTCON’ 2025).
  10. Dinushi Dhananjalee and Uthpala Ekanayke. GENETIC ALGORITHM APPROACH FOR THE BALANCED ASSIGNMENT PROBLEM. November 2024,Postgraduate Institute of Science Research Congress 2024
  11. Tharaka Ruwan and Uthpala Ekanayake. NOVEL METHOD TO SOLVE THE TRAVELING SALESMAN PROBLEM USING DISTANCE MATRIX, November 2024,Postgraduate Institute of Science Research Congress 2024
  12. Tharika Ekanayake and Uthpala Ekanayke. APPLICATION OF KRUSKAL’S ALGORITHM IN FINDING BASIC FEASIBLE SOLUTIONS FOR TRANSPORTATION PROBLEMS, November 2024,Postgraduate Institute of Science Research Congress 2024
  13. Tharika Ekanayake and Uthpala Ekanayke. Solving triangular fuzzy transportation problem using modified fractional knapsack problem; Young Scientists’ Conference on Multidisciplinary Research-2023At: National Institute of Fundamental Studies, Sri Lanka.
  14. Tharika Ekanayake and Uthpala Ekanayke. A NEW METHOD USING THE GEOMETRIC MEAN TO SOLVE TETRAD FUZZY TRANSPORTATION PROBLEMS. Tenth Postgraduate Institute of Science Annual Research Congress (PGIS RESCON) 2023.At: University of Peradeniya.
  15. Tharaka Ruwan and Uthpala Ekanayake. Solving triangular fuzzy transportation problem using modified fractional knapsack problem, Young Scientists’ Conference on Multidisciplinary Research-2023At: National Institute of Fundamental Studies, Sri Lanka.
  16. Oshan Niluminda and Uthpala Ekanayake. A novel enhanced algorithm to solve bin-packing problems. Young Scientists’ Conference on Multidisciplinary Research-2023At: National Institute of Fundamental Studies, Sri Lanka.
  17. Suthan B. A., Eakanayaka E. M. U. S. B.  Tourist Arrival Forecasting In Sri Lanka Amidst The Covid-19 Pandemic: Deep Learning And Machine Learning Models. Proceedings of 24th Peradeniya University International Research Sessions (iPURSE) 2023
  18. Oshan Niluminda and Uthpala Ekanayake. A NOVEL GRAPH THEORY TECHNIQUE TO SOLVE ASSIGNMENT PROBLEMS; The 4th Faculty Annual Research Session 2023 (FARS 2023).At: Faculty of Applied Science, University of Vavuniya, Sri Lanka.
  19.  K.P.O. Niluminda , and E.M.U.S.B. Ekanayake, A novel procedure for identifying an initial feasible solution to the transportation problem. ISSN: 1391-8796 Proceedings of 10th Ruhuna International Science & Technology Conference University of Ruhuna, Matara, Sri Lanka January 18, 2023.
  20. Sumesh Kavinda Jayawardana and Uthpala Ekanayake. New Approach to Problems with One-dimensional Bin Packing; iPURSE 2023. At: University of Peradeniya.
  21. Tharika Ekanayake and Uthpala Ekanayke. THE ANT COLONY OPTIMIZATION ALGORITHM TO SOLVE THE TRAPEZOIDAL TRANSPORTATION PROBLEMS; International Conference on Mathematics and Mathematics Education At: University of Peradeniya 2023.
  22. E. M. U. S. B. Ekanayake, and W. B. Daundasekara. Using Modified Ant Colony Algorithm Approach to Solve Assignment Problem-Proceeding of the ISymRU 2021, International conferences –Rajarata University of Sri Lanka
  23. E. M. U. S. B. Ekanayake, and W. B. Daundasekara. Solving Interval Transportation Problem with Mixed Constraints Ant Colony Optimization Algorithm-Proceedings of the International Conference on Mathematics and Mathematics Education, PGIS 2021.
  24. E.M.D.B. Ekanayake, E. M. U. S. B. Ekanayake. An alternative approach to profit maximization using the triangular fuzzy transportation problem. Proceeding for international conference on mathematics and Mathematics Education: 14-15 July 2023.
  25. E.M.D.B. Ekanayake, E. M. U. S. B. Ekanayake. A new algorithm for finding the basic feasible solution for bottleneck transportation problem. ISSN: 1391-8796 Proceedings of 10th Ruhuna International Science & Technology Conference University of Ruhuna, Matara, Sri Lanka January 18, 2023.
  26. K.P.O. Niluminda , and E.M.U.S.B. Ekanayake, A Direct Method to Solve Profit-Maximized Transportation Problems, ICAPS 2023, International Conference on Applied Sciences OPT-S1-04 30-31 May 2023 Sabaragamuwa University of Sri Lanka.
  27. Dananjaya Ekanayake and Uthpala Ekanayake. A Novel Approach to Solving the Fuzzy Assignment Problems; Conference: ANNUAL INTERNATIONAL CONFERENCE ON BUSINESS INNOVATION (ICOBI) 2023.
  28. Oshan Niluminda and Uthpala Ekanayake; Modified Vogel’s Approximation Method to Solve Both Balanced and Unbalanced Transportation Problems; THE 06TH INTERNATIONAL CONFERENCE ON BUSINESS INNOVATION (ICOBI) 2023, DOI: 10.5281/zenodo.10206936;At: NSBM Green University, Colombo, Sri Lanka
  29. K.P.O. Niluminda, and E.M.U.S.B. Ekanayake, Novel approach based on the weight adjacency matrix to obtain the minimum weight spanning tree. Proceedings of FARS2022, 03 Nov 2022 Faculty of Applied Science, University of Vavuniya.
  30. K.P.O. Niluminda, and E.M.U.S.B. Ekanayake .BASED ON MODIFIED ANT COLONY ALGORITHM FOR RESEARCHING THE MINIMUM WEIGHT SPANNING TREE, Proceedings of the Postgraduate Institute of Science Research Congress, Sri Lanka: 28th – 30th October 2022.
  31. E. M. U. S. B. Ekanayake .A Review of Numerous Types of Transportation Problems and Their Mathematical Models, International conference on Empirical Economic   and Social Science-ICEESST 2022(Turkey)
  32. Ekanayake E.M.U.S.B., Daundasekara W.B., and Perera S.P.C. Solving triangular fuzzy transportation problems with the quadratic mean, Third faculty annual research session 2022(FARS2022),Faculty of Applied Sciences, University of Vavniya, Sri Lanka
  33. E. M. U. S. B. Ekanayake , and W. B. Daundasekara. Anew Algorithm Approach to Find the Initial Feasible Solution for a Transportation Problem, Proceedings of the International Conference on Mathematics and Mathematics Education, ICMME 2019, PGIS, University of Peradeniya.
  34. E. M. U. S. B. Ekanayake, and W. B. Daundasekara. A Novel Approach in Solving Fuzzy Transportation Problems using Modified Ant Colony Algorithm, Proceedings of the Postgraduate Institute of Science Research Congress, PGIS 2019, University of Peradeniya.
  35. W. Nallaperuma, U. Ekanayake, Ruwan Punchi-Manage. Identifying Factors that Affect the Downtime of a Production Process. Proceeding of the 15th Open University Research Sessions (OURS 2017).
  36. Lakmali Ariyasena, Uthpala Ekanayake, Nimal Gunatilleke, Savitri Gunatilleke, Ruwan Punchi-Manage. Spatial Patterns of Trees in the Sinharaja Forest in Sri Lanka. Proceeding of the 15th Open University Research Sessions (OURS 2017).
  37. S. Sankalpa, U. Ekanayake and Ruwan Punchi-Manage. Identifying Factors that Affect for the Job Satisfaction of Banking Employees in Sri Lanka. Proceeding of the 15th Open University Research Sessions (OURS 2017).
  38. H.M.P.C.H.Bamunugedara, E. M. U. S. B. Ekanayake and R.B.N.Dissanayake. Impact of Sample Size on Determine of Yarn Quality, 3rd International Research Symposium, Faculty of Management Studies, Rajarata University of Sri Lanka.

Books Published

  1. Oshan Niluminda and Uthpala Ekanayake. SOLVING LARGE SCALE MINIMUM SPANNING TREE PROBLEMS AND TRANSPORTATION PROBLEMS USING A MODIFIED ANT COLONY ALGORITHM; June 2023; Publisher: Eliva Press; ISBN: 978-99949-8-435-0.
  2. Dinushi Dhananjalee and Uthpala Ekanayke: Developing Effective Optimization Techniques for Transportation and Assignment Concerns: September 2025; Publisher: Eliva Press; ISBN: 978-9999-33-10-12.