1. Mostafa El-Bolok and Zakaria Yahia “A Proposed Nonlinear Programming Optimization Model for Optimal Budget Mix of Digital Marketing Campaigns” 2024 IEEE 6th NILES International Conference, 19-21 October 2024.
2. Nourhan Adly, Zakaria Yahia, Mohamed Gheith and Amr Eltawil “A Mixed Integer Programming Formulation for Optimal Scheduling of Household Appliances With Budget Constraint” 2021 IEEE 8th International Conference on Industrial Engineering and Applications (ICIEA 2021) Virtual Conference, Apr. 23-26, 2021.
3. Zakaria Yahia, Anup Pradhan “Optimization and System Dynamics-based Simulation for Electricity Generation-mix Planning and GHG Emissions Mitigation” Proceedings of 29th International Association for Management Of Technology Conference (IAMOT 2020), Nile University, Egypt, 13–17 September 2020.
4. Mamoletsi Nkadimeng, Zakaria Yahia, Anup Pradhan “A Proposed Mathematical Model for Production Planning Problem in The Brewing Industry” Proceedings of 29th International Association for Management Of Technology Conference (IAMOT 2020), Nile University, Egypt, 13–17 September 2020.
5. Martin Siluthanyi, Zakaria Yahia, Anup Pradhan “Supply Chain Management of Milled Grain Products: A Review and Conceptual Framework” Proceedings of 29th International Association for Management Of Technology Conference (IAMOT 2020), Nile University, Egypt, 13–17 September 2020.
6. Zakaria Yahia and Pule Kholopane “Multi-objective Optimization of Dynamic Electricity Generation-mix with CO2 Reduction Target: A Case Study of South Africa” Proceedings of the IEOM International Conference, Bangkok, Thailand, March 5 - 7, 2019.
7. Zakaria Yahia and Anup Pradhan “Multi-objective Preemptive Optimization of Residential Load Scheduling Problem Under Price and CO2 Signals” the IEOM International Conference, Bangkok, Thailand, March 5 - 7, 2019.
8. Zakaria Yahia and Tarek Fatyani “TAKA News Search Engine: A Proposed DEMO-based Performance Evaluation System” Proceedings of the IEOM International Conference, Bangkok, Thailand, March 5 - 7, 2019.
9. Zakaria Yahia and Pule Kholopane “Optimization-based Scheduling of Ingula Pumped Storage Plant under demand uncertainty” Proceedings of the IEOM South Africa International Conference, Pretoria, South Africa, October 29 - November 1, 2018. (Got the best paper award in the Applied Operations Research Track)
10. Zakaria Yahia and Anup Pradhan “Coordinated Scheduling of Multiple Households’ Appliances with Levelled Load Profiles and Consumers’ Preferences” Proceedings of the IEOM South Africa International Conference, Pretoria, South Africa, October 29 - November 1, 2018.
11. Zakaria Yahia and Kristy Langerman “Assessing the Implications of South Africa’s Integrated National Electrification Programme’s Restricted Electricity Supply Connections” Proceedings of the IEOM South Africa International Conference, Pretoria, South Africa, October 29 - November 1, 2018.
12. Mamoletsi Winnie, Zakaria Yahia and Anup Pradhan “Integration between Production Planning, Quality and Sales: A proposed framework” Proceedings of the IEOM South Africa International Conference, Pretoria, South Africa, October 29 - November 1, 2018.
13. Mohammed Abdelgalil, Zakaria Yahia, Tomohiko Mizutani, Kazuhide Nakata, Amr Eltawil “A variable neighborhood search algorithm with new high-weight-constraints-focused structures for the nurse rostering problem” The 2018 Fall National Conference of Operations Research Society of Japan, Nagoya, Japan, September 2018.
14. Zakaria Yahia and Anup Pradhan “An Optimal Load Schedule of Household Appliances with Leveled Load Profile and Consumer’s Preferences” Domestic Use of Energy 2018, Cape Town, South Africa, 3-5 April 2018.
15. Zakaria Yahia and Pule Kholopane “A Binary Integer Programming Model for Optimal Load Scheduling of Household Appliances with Consumer’s Preferences” Domestic Use of Energy 2018, Cape Town, South Africa, 3-5 April 2018.
16. Mohammed Abdelgalil, Zakaria Yahia and Amr Eltawil “A Proposed New Dynamic Programming Formulation for The Nurse Rostering Problem” 47th International Conference on Computer and Industrial Engineering Proceedings, Lisbon, Portugal, 11-13 October 2017.
17. Zakaria Yahia, Nermine Harraz and Amr Eltawil “Building Master Surgery Schedules with Leveled Bed Occupancy and Nurse Workloads” The IEEE International Conference on Industrial Engineering and Engineering Management (IEEM-IEEE), Malaysia, 9-12 December 2014.
18. Zakaria Yahia, Nermine Harraz and Amr Eltawil “The Operating Room Case-mix Problemunder Demand Uncertaintyand Nurses Capacity Constraint” The 44th International Conference on Computer and Industrial Engineering (CIE44 & IMSS’14) Proceedings, Istanbul, Turkey, 14-16 October 2014.
19. Zakaria Yahia, Nermine Harraz and Amr Eltawil “A Proposed Solution Framework for the Operating Room Scheduling Problems” Proceedings of the World Congress on Engineering & Computer Science, San Francisco, USA, 23-25 October 2013.
20. Mohamed Adel Shalaby, Tamer Abdelmaguid and Zakaria Yahia “New Routing Rules for Dynamic Flexible Job Shop Scheduling with Sequence-Dependent Setup Times” Proceedings of the 2012 International Conference on Industrial Engineering and Operations Management, Istanbul, Turkey, 3-6 July 2012.