เปรียบเทียบวิธี

	ปรากฏการณ์แส้	การจัดการเส้นทางการขนส่งพร้อมสินค้าคงคลัง	การวางแผนความต้องการวัสดุ
สาขาวิชา	การจัดการการดำเนินงาน	การจัดการการดำเนินงาน	การจัดการการดำเนินงาน
ตระกูล	Machine learning	Machine learning	Machine learning
ปีกำเนิด	1961	2014	1975
ผู้ริเริ่ม	Jay Forrester	Coelho, L. C., Cordeau, J. F., & Laporte, G.	Joseph Orlicky
ประเภท	Phenomenon and analysis framework	Optimization problem	Material planning algorithm
แหล่งต้นตำรับ	Lee, H. L., Padmanabhan, V., & Whang, S. (1997). The bullwhip effect in supply chains. Sloan Management Review, 38(3), 93–102.	Coelho, L. C., Cordeau, J. F., & Laporte, G. (2014). Thirty years of inventory routing. Transportation Research Part B: Methodological, 55, 28-67.	Orlicky, J. (1975). Material requirements planning: The new way of life in production and inventory management. New York: McGraw-Hill.
ชื่อเรียกอื่น	demand amplification, Forrester effect	IRP, vendor-managed logistics	MRP, MRP I
ที่เกี่ยวข้อง	5	5	5
สรุป	The Bullwhip Effect is a phenomenon in supply chain management where small fluctuations in end-customer demand cause progressively larger fluctuations in orders as one moves upstream from retail to distributors to manufacturers to suppliers. First formally documented by Jay Forrester in his 1961 system dynamics work, and later popularized by Lee, Padmanabhan, and Whang in 1997, the effect reveals how information delays and ordering strategies amplify demand variability throughout supply chains, leading to excess inventory, inefficient production scheduling, and increased costs.	The Inventory Routing Problem (IRP) is an optimization problem that jointly determines inventory levels at customer locations, delivery routes, and shipment quantities to minimize total logistics and inventory holding costs. Rather than treating inventory management and vehicle routing as separate decisions, IRP recognizes that they are interdependent: larger shipments reduce routing costs but increase inventory holding costs, and vice versa. IRP is solved using mixed-integer programming, heuristics, and metaheuristics, and is a cornerstone of vendor-managed inventory (VMI) programs.	Material Requirements Planning (MRP) is a computerized system developed by Joseph Orlicky in the 1970s that calculates material requirements based on master production schedules and bill-of-materials data. MRP determines what materials to buy, how much to order, and when to order them to meet production demand while minimizing inventory carrying costs. It became a foundational technology for manufacturing planning and later evolved into manufacturing resource planning (MRP II) and enterprise resource planning (ERP) systems.