tailieunhanh - Lecture Operations and supply chain management: The Core (3/e) – Chapter 4a: Learning curves

After reading the material in this chapter, you should be able to: Understand the concept of capacity and how important it is to manage capacity, explain the impact of economies of scale on the capacity of a firm, understand how to use decision trees to analyze alternatives when faced with the problem of adding capacity, describe the differences in planning capacity between manufacturing firms and service firms. | Learning Curves Chapter 4a McGraw Hill Irwin Copyright 2013 by The McGraw Hill Companies Inc. All rights reserved. Learning Curves A learning curve is a line that displays the relationship between unit production and cumulative number of units produced One way of learning is learning by doing As plants produce more they gain experience in the best production methods which reduces their costs in a predictable manner This is observed as a decline in production costs by a specific percentage each time cumulative production doubles Learning rates are unique and depend upon the nature of the process 4a 2 Learning Curves Graphed on a logarithmic scale the learning curve is a straight line 4a 3 Learning Curve Assumptions 4a 4 Learning Curves Learning curves can be developed from an arithmetic tabulation by logarithms or some other curve-fitting technique The improved performance can be thought of in two ways Time per unit shows the decrease in time required for each successive unit Output per time period increase in number of units produced over a fixed time period 4a 5 Learning Curves A 90 learning curve implies that each time cumulative production doubles the cost per unit is reduced by 10 Differences in learning curves can have dramatic effects over time 4a 6 Learning Curves A logarithmic plot allows linear extrapolation and more accurate interpretation Excel Learning Curve Ca 4a 7 Learning Curves Logarithmic Analysis The relationship between total number of units produced and learning can be expressed mathematically Excel Learning Curves 4a 8 Learning Curves Logarithmic Analysis Example For an 80 learning curve if the first unit required 100 000 hours how many hours will the eight unit require 4a 9 Learning Curve Tables When the learning percentage is known tables can be used to estimate labor hours for a specific unit Multiply the initial unit labor hours by the appropriate value from the table Example With an 80 learning rate the eighth unit should take times

• Quản trị kinh doanh
• Supply chain management
• Supply chain processes
• Supply chain
• Learning curves
• Logarithmic analysis
• Manufacturing planning
• Control for supply chain management
• Supply chain logistics
• Management of supply chain logistics
• Supply chain logistics framework
• Warehouse replenishment systems
• Lecture Supply chain management
• Chuỗi cung ứng
• Quản lý chuỗi cung ứng
• Supply chain relationship management
• Global supply chain management
• Guide to supply chain management
• Source in supply chain management
• Guide to deliver in supply chain management
• Supply chains
• Operations planning
• Strategic sourcing initiatives
• Competitive supply chain
• Goods producing processes
• Effective operation
• Supply chain strategy
• Advances in supply chain management
• Supply chain analysis
• Advanced planning
• Essentials of supply chain management
• Supply chain operations
• Supply chain coordination
• Business strategy
• Measuring performance
• Supply chain metrics
• Supply chain opportunities
• Developing supply chain systems
• Logistics and supply chain management
• Synchronous supply chain
• Managing the global pipeline
• Managing risk in the supply chain
• Supply chain integration
• Strategic lead time management
• The synchronous supply chain
• The supply chain
• Lean supply chains
• Lean production
• Lean supply chain design