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Summary
Summary
As organizations move into the future, the operations environment needs to expand into Collaborative Planning and Forecast Replenishment (CPFR), Vendor Managed Inventory (VMI), and an Enterprise Resource Planning (ERP) operating system to become and remain competitive. These innovative and complex methods require an unprecedented degree of accuracy and knowledge of the basics in operations management. Back to Basics: Your Guide to Manufacturing Excellence details the key concepts necessary to expertly apply new approaches such as ERP, CPFR, VMI, and much more.
Based on the popular "Back to Basics" columns that appear in the magazine APICS: The Performance Advantage, the structure of the book allows for sufficient development of each topic and is short enough to be quickly read. Topics include: capacity, inventory, inventory accuracy, part numbering, processes, problem solving, and general managerial guidelines. Each chapter has everything you need to understand the issues and their implications.
Many careers in operations management begin with production and inventory control. When entering this field, you need to know the basics - in a hurry. Developing excellence takes time and usually comes through the "school of hard knocks". Whether new on the job, or brushing up to implement the latest technology, Back to Basics: Your Guide to Manufacturing Excellence gives you the information you need to become an expert - quickly.
Author Notes
R. T. "Chris" Christensen is the Director of Operations Management programs at the University of Wisconsin-Madison, School of Business, Executive Education.
Table of Contents
Chapter 1. Why the Basics? | p. 1 |
Understanding the Basics | p. 1 |
Oh, No! Not Another Book on Manufacturing! | p. 2 |
How Can Things Be So Wrong, When Everything Seems To Be So Right? | p. 2 |
Why Teach Basics When the Answers Are Out There? | p. 4 |
Basics Are Hard, But Basics Work! | p. 5 |
Mapping Manufacturing Excellence: The Case of the MRPII System That Wasn't | p. 7 |
Overview | p. 7 |
The Case of the MRPII Implementation That Wasn't | p. 8 |
Mapping the Basics of Manufacturing Excellence | p. 10 |
Mapping Manufacturing Excellence: The Four Operations Pillars of Excellence | p. 12 |
Overview | p. 12 |
The Four Operations Pillars of Excellence | p. 12 |
Lead Time: One of the Basic Concepts of Manufacturing | p. 13 |
Overview | p. 13 |
Defining the Concept of Lead Time | p. 13 |
Types of Lead Times | p. 14 |
Major Lessons Learned | p. 15 |
Understanding the Components of Manufacturing Lead Time | p. 16 |
Overview | p. 16 |
Defining the Concept of Manufacturing Lead Times | p. 16 |
Factors Affecting Manufacturing Lead Time | p. 17 |
Importance of Monitoring the Elements of Manufacturing Lead Time | p. 18 |
Major Lessons Learned | p. 19 |
Manufacturing Is Really Just a Balancing Act | p. 19 |
Overview | p. 19 |
The Balance | p. 20 |
Major Lessons Learned | p. 23 |
Chapter 2. Understanding Management: The Basics of Problem-Solving | p. 25 |
Why Problem-Solving? | p. 25 |
Understanding the Concept of Manufacturing's Most Fragile Asset: Information | p. 26 |
Overview | p. 26 |
Defining Information | p. 26 |
Critical Traits of Information | p. 27 |
Major Lessons Learned | p. 28 |
Managing Information | p. 28 |
Overview | p. 28 |
Information Management | p. 29 |
The Fragile Nature of Information | p. 31 |
Major Lessons Learned | p. 31 |
When Is a Problem Not a Problem? | p. 31 |
Overview | p. 31 |
Problem vs. Symptom | p. 32 |
Symptoms | p. 32 |
Urgency, Structure, and Orientation of Problems | p. 33 |
Causes | p. 34 |
Major Lessons Learned | p. 35 |
Understanding the Problem-Solving Process | p. 35 |
Step 1 Size-Up/Description | p. 35 |
Step 2 Problem-Statement/Diagnostics | p. 37 |
Step 3 Analysis | p. 38 |
Major Lessons Learned | p. 38 |
Step 4 Prescription/Alternatives | p. 39 |
Step 5 Implementation | p. 40 |
General Observations About the Problem-Solving Process | p. 42 |
Responding to a Problem: Solve, Resolve, or Dissolve | p. 43 |
Overview | p. 43 |
Identifying the Three Forms of a Solution | p. 43 |
To Go Forward, Sometimes We Have To Go Backwards | p. 45 |
Overview | p. 45 |
The Importance of Going Back | p. 45 |
How To Go Backwards | p. 47 |
Major Lessons Learned | p. 47 |
Chapter 3. What Type of Company Are We? | p. 49 |
Why Should We Care What Type of Company We Are? | p. 49 |
What Type of Company Are We? The Major Dimensions | p. 50 |
Overview | p. 50 |
Manufacturing Settings: Major Dimensions | p. 50 |
Manufacturing Settings Examined | p. 51 |
Job Shop | p. 51 |
Batch | p. 52 |
Repetitive | p. 52 |
Process | p. 53 |
Major Lessons Learned | p. 53 |
What Type of Company Are We? Understanding the Industrial and Manufacturing Contexts | p. 54 |
Overview | p. 54 |
Understanding the Industrial Context | p. 54 |
Understanding the Impact of the Industrial Context | p. 55 |
How Does This Information Help with Software Selection? | p. 56 |
Major Lessons Learned | p. 56 |
Chapter 4. Understanding the Importance of Metrics | p. 57 |
Why Metrics? | p. 57 |
The Importance of Metrics (Part 1) | p. 58 |
Overview | p. 58 |
The Total Quality Management Experience at One Company | p. 58 |
What Are Metrics? | p. 59 |
Why Metrics? | p. 60 |
Major Lessons Learned | p. 61 |
The Importance of Metrics (Part 2) | p. 61 |
Overview | p. 61 |
Understanding the Differences Between Metrics | p. 61 |
Major Lessons Learned | p. 63 |
The Importance of Metrics (Part 3) | p. 64 |
Overview | p. 64 |
Metrics and Corporate Strategy | p. 64 |
Gaps as Indicators of Strategic Problems | p. 65 |
Gaps as Indicators of Tactical Problems | p. 66 |
Major Lessons Learned | p. 67 |
Chapter 5. Process Thinking: Key to the Basics | p. 69 |
Process Thinking: Understanding the Importance of Processes | p. 69 |
Processes: The Basic Building Blocks of the Operations Management System | p. 70 |
Overview | p. 70 |
What Is a Process? | p. 71 |
Strategic Management Process | p. 72 |
Innovation Process | p. 72 |
Customer Service Process | p. 72 |
Resource Management Process | p. 72 |
Supply-Chain Management Process | p. 73 |
Logistics Management Process | p. 73 |
Performance Measurement | p. 73 |
Other Processes | p. 73 |
Major Lessons Learned | p. 74 |
Identifying the Building Blocks of the Process | p. 74 |
Overview | p. 74 |
Categorization of Activities within the Process | p. 75 |
Operation | p. 75 |
Transportation | p. 76 |
Inspection | p. 76 |
Delay | p. 76 |
Storage | p. 77 |
Major Lessons Learned | p. 78 |
Structure of Processes | p. 78 |
The Ordering of Activities | p. 78 |
Positioning of Activities | p. 78 |
Linking of Activities | p. 80 |
Major Lessons Learned | p. 80 |
Improving Processes: The First Step | p. 80 |
Overview | p. 80 |
Four Types of Processes Found in Every Firm | p. 81 |
The Process as Formally Documented | p. 81 |
The Process as People Think It Exists | p. 82 |
The Process as It Actually Exists | p. 82 |
The Process as It Should Exist | p. 82 |
Major Lessons Learned | p. 83 |
Incorporating Value into Process Analysis | p. 83 |
Overview | p. 83 |
Identify the Critical Customer/Product Traits | p. 84 |
Determine What Constitutes Value for the Critical Customers | p. 85 |
Identify Metrics Consistent with These Specific Traits of Value | p. 85 |
Identify the Critical Processes (Including Bounding and Setting Base Conditions) | p. 85 |
Document (and Validate) the Process as It Currently Exists | p. 85 |
Assess the Performance of the Current System in Light of the Customer-Based Metrics | p. 85 |
Modify the Process Appropriately | p. 86 |
Major Lessons Learned | p. 86 |
Process Analysis: Closing the Value Gap | p. 87 |
Overview | p. 87 |
Disposition Tactics | p. 87 |
Position Tactics | p. 88 |
A Caution Regarding Process Change | p. 88 |
Major Lessons Learned | p. 89 |
Poka-Yoking Our Activities | p. 90 |
Overview | p. 90 |
The Importance of Knowing the Desired Outcomes | p. 91 |
Major Lessons Learned | p. 92 |
Chapter 6. Capacity: You Can't Build It if You Don't Have the Capacity | p. 93 |
Capacity: The Resource at the Heart of Manufacturing Excellence | p. 93 |
Capacity: Understanding the Basics | p. 93 |
Major Lessons Learned | p. 96 |
Measuring Capacity | p. 96 |
Safety Capacity | p. 97 |
Making the Transition from Volume to Output | p. 98 |
Major Lessons Learned | p. 99 |
Making the Transition from Capacity in Isolation to Capacity within the Processes | p. 100 |
Overview | p. 100 |
Capacity in Isolation to Capacity of the System | p. 100 |
Measuring Capacity at the Activity | p. 101 |
Calculating Capacity of the Overall Process | p. 102 |
Major Lessons Learned | p. 102 |
Production Scheduling Is No Substitute for Capacity Planning | p. 103 |
Overview | p. 103 |
Production Scheduling: Defining the Concept | p. 104 |
The Problem of Production Scheduling: Solving the Wrong Problems and Hiding Others | p. 105 |
Prerequisites for Effective Production Scheduling | p. 106 |
Major Lessons Learned | p. 107 |
Don't Schedule the Shop; Schedule the Bottleneck | p. 107 |
Overview | p. 107 |
Bottlenecks: The Key to Simplified, Effective Scheduling | p. 108 |
Major Lessons Learned | p. 110 |
Chapter 7. Understanding the Nature of Setups | p. 113 |
Why Be Concerned with Setup? | p. 113 |
Understanding the Nature of Setups: The Basics | p. 114 |
What Is Setup? | p. 114 |
Internal Activity, External Activity, and Capacity Usage | p. 116 |
Why Worry About Setups? | p. 116 |
General Guidelines for Managing Setups | p. 116 |
Understanding the Nature of Setups: Setups and Lot Sizing | p. 117 |
Lot Sizing: A Review | p. 117 |
Setup Costs | p. 118 |
Setup Costs: An Example | p. 118 |
Major Lessons Learned | p. 120 |
Chapter 8. Inventory: The Most Misunderstood Corporate Asset | p. 121 |
Inventory Accuracy: What's So Important About the Status of Our Inventory, Anyway? | p. 121 |
Overview | p. 121 |
Why Inventory Accuracy | p. 121 |
The Need for Record Accuracy | p. 122 |
Major Lessons Learned | p. 123 |
If Inventory Is a Waste, Then Why Study It? | p. 124 |
The Fallacy of Inventory Management through FIAT | p. 124 |
Understanding the Nature of Inventory: Functions | p. 125 |
Overview | p. 125 |
What Is Inventory? | p. 125 |
Functions of Inventory | p. 126 |
Transit | p. 126 |
Decoupling | p. 127 |
Lot Sizing | p. 127 |
Anticipatory | p. 127 |
Seasonal | p. 127 |
Buffer | p. 128 |
Applying the Functions Approach | p. 128 |
Major Lessons Learned | p. 128 |
Understanding the Nature of Inventory: Forms and Positions | p. 129 |
Overview | p. 129 |
Forms of Inventory | p. 129 |
Position of the Inventory in the Supply Chain | p. 130 |
Putting Things Together | p. 130 |
Major Lessons Learned | p. 130 |
Understanding the Nature of Inventory: ABC Analysis | p. 131 |
Part 1 p. 131 | |
Overview | p. 131 |
Develop Categories of Inventories | p. 131 |
The Nature of ABC Analysis | p. 132 |
ABC and Inventory Control | p. 132 |
ABC and Inventory Reduction | p. 133 |
Doing ABC Analysis | p. 133 |
Major Lessons Learned | p. 134 |
Part 2 p. 135 | |
A Review | p. 135 |
Doing ABC Analysis: The Answer | p. 135 |
Introducing Costs | p. 136 |
Major Lessons Learned | p. 136 |
Managing the Slow Movers Using ABC Analysis | p. 137 |
Overview | p. 137 |
The Problem of the "Slow Movers" | p. 137 |
Managing the Bottom 5% | p. 138 |
Strategies for Managing Slow Movers | p. 138 |
Major Lessons Learned | p. 139 |
From Inventory Accuracy by Accident to Inventory Accuracy by Design: Key Concepts | p. 140 |
Overview | p. 140 |
Defining Inventory Accuracy | p. 142 |
Major Lessons Learned | p. 144 |
From Inventory Accuracy by Accident to Inventory Accuracy by Design: Developing the System | p. 144 |
Overview | p. 144 |
The Structure for Inventory Accuracy | p. 144 |
An Effective Cycle-Counting Program: The Key to High Inventory Accuracy | p. 146 |
Major Lessons Learned | p. 149 |
Chapter 9. Odds and Ends of Manufacturing Basics | p. 151 |
Manufacturing Excellence Draws on Multiple Sources | p. 151 |
Part Numbering: An Introduction | p. 151 |
Overview | p. 151 |
Defining the Concept of Part Numbering | p. 153 |
Assigning Part Numbers: To Be Significant or Not To Be Significant | p. 154 |
Major Lessons Learned | p. 155 |
Understanding Part Numbering: Significant Numbering (Yes or No)? | p. 155 |
Overview | p. 155 |
Reasons for Using Significant Part Numbers | p. 155 |
Part Numbering: What To Do | p. 158 |
Overview | p. 158 |
Part Numbering vs. Storage and Retrieval of Information | p. 158 |
Comments from Column Readers | p. 160 |
Part Numbering: When To Change the Number | p. 160 |
How To Handle Prototypes | p. 161 |
How To Handle Design Revisions | p. 162 |
Part Numbering Revisited | p. 163 |
Overview | p. 163 |
Another Look at Part Numbering: One Reader's Perspective | p. 163 |
Major Lessons Learned | p. 165 |
Bills of Materials: An Introduction | p. 166 |
The Problem | p. 166 |
Defining the Bill of Materials | p. 167 |
Bills of Materials: Understanding the Uses | p. 168 |
Overview | p. 168 |
Uses of the Bill of Materials | p. 168 |
Product Definition | p. 168 |
Engineering Change Control | p. 169 |
Service Part Support | p. 169 |
Warranty Analysis/Control | p. 170 |
Planning and Scheduling | p. 170 |
Costing | p. 171 |
Shortage Assessment | p. 171 |
Backflushing | p. 171 |
Terms and Definitions | p. 171 |
Revisiting Bills of Material | p. 172 |
Major Lessons Learned | p. 174 |
Chapter 10. Getting Things Done, and Done Right, the First Time: The Basics of Implementation | p. 175 |
Implementing the Savings: The Dumb Way of Achieving Managerial Excellence | p. 175 |
Overview | p. 175 |
What Are the Savings? | p. 176 |
Major Lessons Learned | p. 179 |
The Power of WIIFM (What's in It for Me?) | p. 179 |
Overview | p. 179 |
The Power of WIIFM | p. 180 |
Major Lessons Learned | p. 181 |
When a Cost Savings Is a Real Cost Savings | p. 182 |
Overview | p. 182 |
You Don't Understand Costs | p. 182 |
True Cost Savings | p. 183 |
Opportunity Cost Savings | p. 184 |
Incremental Cost Savings | p. 184 |
Myopic Cost Savings | p. 184 |
Major Lessons Learned | p. 185 |
Focus, Urgency, and Time Compression: Understanding the Keys to Success in Implementation | p. 185 |
Introduction | p. 185 |
The Scenario | p. 186 |
The Problem | p. 186 |
Hey, Vendor, There's a Paradigm in my Software! | p. 188 |
Overview | p. 188 |
The Manufacturing Software Decision | p. 188 |
So What? | p. 190 |
Postscript: Finding a Beginning in the End | p. 191 |
Index | p. 195 |