Chapter 1 Introduction to Operations Management PDF

Introduction to Operations Management Copyright © 2015 McGraw-Hill Education. All rights...

Introduction to Operations Management Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. You should be able to: LO 1.1 Define the terms operations management and supply chain LO 1.2 Identify similarities and differences between production and service operations LO 1.3 Explain the importance of learning about operations management LO 1.4 Identify the three major functional areas of organizations and explain how they interrelate LO 1.5 Summarize the two major aspects of process management LO 1.6 Describe the operations function and the nature of the operations manager’s job LO 1.7 Explain the key aspects of operations management decision making LO 1.8 Briefly describe the historical evolution of operations management LO 1.9 Describe the current issues in business that impact operations management LO 1.10 Explain the need to manage the supply chain 1-2  What is operations?  The part of a business organization that is responsible for producing goods or services  How can we define operations management?  The management of systems or processes that create goods and/or provide services 1-3 LO 1.1  Goods are physical items that include raw materials, parts, subassemblies, and final products. Automobile Computer Oven Shampoo Services are activities that provide some combination of time, location, form or psychological value. Air travel Education Haircut Legal counsel 1-4 LO 1.1  Supply Chain – a sequence of activities and organizations involved in producing and delivering a good or service Suppliers’ Direct Final Producer Distributor suppliers suppliers Customers 1-5 LO 1.1  Value-Added Inputs Transformation/ Outputs Land Conversion Goods Labor Services Capital Process Information Measurement and Feedback Measurement Measurement and Feedback and Feedback Control Feedback = measurements taken at various points in the transformation process Control = The comparison of feedback against previously established standards to determine if corrective action is needed. 1-6 LO 1.1  Products are typically neither purely service- or purely goods- based. Goods Services Surgery, Teaching Songwriting, Software Development Computer Repair, Restaurant Meal Home Remodeling, Retail Sales Automobile Assembly, Steelmaking 1-7 LO 1.2 1. Degree of customer contact 2. Uniformity of input 3. Labor content of jobs 4. Uniformity of output 5. Measurement of productivity 6. Production and delivery 7. Quality assurance 8. Amount of inventory 9. Evaluation of work 10. Ability to patent design 1-8 LO 1.2  Every aspect of business affects or is affected by operations  Many service jobs are closely related to operations  Financial services  Marketing services  Accounting services  Information services  Through learning about operations and supply chains you will have a better understanding of:  The world you live in  The global dependencies of companies and nations  Reasons that companies succeed or fail  The importance of working with others LO 1.3 1-9  Organization Marketing Operations Finance 1-10 LO 1.4  Finance & Operations  Budgeting  Economic analysis of investment proposals  Provision of funds  Marketing & Operations  Demand data  Product and service design  Competitor analysis  Lead time data 1-11 LO 1.4  Operations manager  Supply chain manager  Production analyst  Schedule coordinator  Production manager  Industrial engineer  Purchasing manager  Inventory manager  Quality manager 1-12  APICS - The Association for Operations Management  American Society for Quality (ASQ)  Institute for Supply Management (ISM)  Institute for Operations Research and Management Science (INFORMS)  The Production and Operations Management Society (POMS)  The Project Management Institute (PMI)  Council of Supply Chain Management Professionals (CSCMP) 1-13  Process - one or more actions that transform inputs into outputs Three Categories of Business Processes: Upper-management processes These govern the operation of the entire organization. Operational processes These are core processes that make up the value stream. Supporting processes These support the core processes. 1-14 LO 1.5  Operations & Supply Chains Sales & Marketing Wasteful Supply > Demand Costly Opportunity Loss Supply < Demand Customer Dissatisfaction Supply = Demand Ideal 1-15 LO 1.5  Four Sources of Variation: Variety of goods or services The greater the variety of goods and services being offered offered, the greater the variation in production or service requirements. Structural variation in demand These are generally predictable. They are important for capacity planning. Random variation Natural variation that is present in all processes. Generally, it cannot be influenced by managers. Assignable variation Variation that has identifiable sources. This type of variation can be reduced, or eliminated, by analysis and corrective action. Variations can be disruptive to operations and supply chain processes. They may result in additional costs, delays and shortages, poor quality, and inefficient work systems. 1-16 LO 1.5  The scope of operations management ranges across the organization. The operations function includes many interrelated activities such as:  Forecasting  Capacity planning  Facilities and layout  Scheduling  Managing inventories  Assuring quality  Motivating employees  Deciding where to locate facilities  And more... 1-17 LO 1.6 The Operations Function consists of all activities directly related to producing goods or providing services. A primary function of the operations manager is to guide the system by decision making.  System Design Decisions  System Operation Decisions 1-18 LO 1.6  System Design – Capacity – Facility location – Facility layout – Product and service planning – Acquisition and placement of equipment These are typically strategic decisions that usually require long-term commitment of resources determine parameters of system operation 1-19 LO 1.6  System Operation These are generally tactical and operational decisions – Management of personnel – Inventory management and control – Scheduling – Project management – Quality assurance Operations managers spend more time on system operation decision than any other decision area They still have a vital stake in system design 1-20 LO 1.6  Most operations decisions involve many alternatives that can have quite different impacts on costs or profits  Typical operations decisions include:  What: What resources are needed, and in what amounts?  When: When will each resource be needed? When should the work be scheduled? When should materials and other supplies be ordered?  Where: Where will the work be done?  How: How will he product or service be designed? How will the work be done? How will resources be allocated?  Who: Who will do the work? LO 1.7 1-21  Modeling is a key tool used by all decision makers  Model - an abstraction of reality; a simplification of something.  Common features of models:  They are simplifications of real-life phenomena  They omit unimportant details of the real-life systems they mimic so that attention can be focused on the most important aspects of the real-life system 1-22 LO 1.7  Keys to successfully using a model in decision making  What is its purpose?  How is it used to generate results?  How are the results interpreted and used?  What are the model’s assumptions and limitations? 1-23 LO 1.7 1. Models are generally easier to use and less expensive than dealing with the real system 2. Require users to organize and sometimes quantify information 3. Increase understanding of the problem 4. Enable managers to analyze “What if?” questions 5. Serve as a consistent tool for evaluation and provide a standardized format for analyzing a problem 6. Enable users to bring the power of mathematics to bear on a problem. LO 1.7 1-24  Quantitative information may be emphasized at the expense of qualitative information  Models may be incorrectly applied and the results misinterpreted  This is a real risk with the widespread availability of sophisticated, computerized models are placed in the hands of uninformed users.  The use of models does not guarantee good decisions. LO 1.7 1-25  A decision making approach that frequently seeks to obtain a mathematically optimal solution  Linear programming  Queuing techniques  Inventory models  Project models  Forecasting techniques  Statistical models LO 1.7 1-26  Performance Metrics  Analysis of Trade-Offs  All managers use metrics to  A trade-off is giving up one manage and control operations thing in return for  Profits something else  Costs  Carrying more inventory  Quality (an expense) in order to  Productivity achieve a greater level of  Flexibility customer service  Inventories  Schedules  Forecast accuracy LO 1.7 1-27  System - a set of interrelated parts that must work together  The business organization is a system composed of subsystems  marketing subsystem  operations subsystem  finance subsystem  The systems approach  Emphasizes interrelationships among subsystems  Main theme is that the whole is greater than the sum of its parts  The output and objectives of the organization take precedence over those of any one subsystem LO 1.7 1-28  In nearly all cases, certain issues or items are more important than others  Recognizing this allows managers to focus their attention to those efforts that will do the most good  Pareto Phenomenon - a few factors account for a high percentage of occurrence of some event(s)  The critical few factors should receive the highest priority  This is a concept that is appropriately applied to all areas and levels of management LO 1.7 1-29  Industrial Revolution  Scientific Management  Human Relations Movement  Decision Models and Management Science  Influence of Japanese Manufacturers 1-30 LO 1.8  Pre-Industrial Revolution  Craft production - System in which highly skilled workers use simple, flexible tools to produce small quantities of customized goods  Some key elements of the industrial revolution  Began in England in the 1770s  Division of labor - Adam Smith, 1776  Application of the “rotative” steam engine, 1780s  Cotton Gin and Interchangeable parts - Eli Whitney, 1792  Management theory and practice did not advance appreciably during this period LO 1.8 1-31  Movement was led by efficiency engineer, Frederick Winslow Taylor  Believed in a “science of management” based on observation, measurement, analysis and improvement of work methods, and economic incentives  Management is responsible for planning, carefully selecting and training workers, finding the best way to perform each job, achieving cooperation between management and workers, and separating management activities from work activities  Emphasis was on maximizing output LO 1.8 1-32  The human relations movement emphasized the importance of the human element in job design  Lillian Gilbreth – applications of psychology  Elton Mayo – Hawthorne studies on worker motivation, 1930  Abraham Maslow – motivation theory, 1940s; hierarchy of needs, 1954  Frederick Hertzberg – Two Factor Theory, 1959  Douglas McGregor – Theory X and Theory Y, 1960s  William Ouchi – Theory Z, 1981 LO 1.8 1-33  F.W. Harris – mathematical model for inventory management, 1915  Dodge, Romig, and Shewart – statistical procedures for sampling and quality control, 1930s  Tippett – statistical sampling theory, 1935  Operations Research (OR) Groups – OR applications in warfare  George Dantzig – linear programming, 1947 1-34 LO 1.8  Refined and developed management practices that increased productivity  Credited with fueling the “quality revolution”  Just-in-Time production 1-35 LO 1.8  Economic conditions  Innovating  Quality problems  Risk management  Competing in a global economy LO 1.9 1-36  Sustainability  Using resources in ways that do not harm ecological systems that support human existence  Sustainability measures often go beyond traditional environmental and economic measures to include measures that incorporate social criteria in decision making  All areas of business will be affected  Product and service design  Consumer education programs  Disaster preparation and response  Supply chain waste management  Outsourcing decisions 1-37 LO 1.9  Financial statements  Ethical issues arise in many  Worker safety aspects of operations management:  Product safety  Quality  The environment  The community  Hiring and firing workers  Closing facilities  Workers rights 1-38 LO 1.9   In the past, organizations did little to manage the supply chain beyond their own operations and immediate suppliers which led to numerous problems:  Oscillating inventory levels  Inventory stockouts  Late deliveries  Quality problems 1-39 LO 1.10  1. The need to improve operations 2. Increasing levels of outsourcing 3. Increasing transportation costs 4. Competitive pressures 5. Increasing globalization 6. Increasing importance of e-business 7. The complexity of supply chains 8. The need to manage inventories 1-40 LO 1.10