processes and technologies. process (definition of) process: any part of an organization that takes...
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Processes and Processes and TechnologiesTechnologies
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Process Process (Definition of)(Definition of)
Process: Any part of an organization that takes inputs and transforms them into outputs
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Process Flowcharting (definition of)Process Flowcharting (definition of)
• Process flowcharting is the use of a diagram to present the major elements of a process
• The basic elements can include tasks or operations, flows of materials or customers, decision points and storage areas or queues
• It is an ideal methodology by which to begin analyzing a process
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Flowchart SymbolsFlowchart Symbols (1 of 2)(1 of 2)
Tasks or operations Examples: Giving an admission ticket to a customer, installing an engine in a car, etc.
Examples: Giving an admission ticket to a customer, installing an engine in a car, etc.
Decision Points Examples: How much change should be offered to a customer, which tool should be used, etc.
Examples: How much change should be offered to a customer, which tool should be used, etc.
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Examples: Sheds, lines of people waiting for a service, etc.
Examples: Sheds, lines of people waiting for a service, etc.
Examples: Customers moving to a seat, mechanic getting a tool, etc.
Examples: Customers moving to a seat, mechanic getting a tool, etc.
Storage areas or queues
Flows of materials or customers
Flowchart SymbolsFlowchart Symbols (2 of 2) (2 of 2)
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Example 2: Flowchart for Inspection Example 2: Flowchart for Inspection Process Process
Material Received from Supplier
Inspect Material for Defects Defects
found?
Return to Supplier for Credit
Yes
No, Continue…
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Process Terminology (1 of 2)Process Terminology (1 of 2)
Single-stage Process
Stage 1
Stage 1 Stage 2 Stage 3
Multi-stage Process
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Process Terminology (2 of 2)Process Terminology (2 of 2)
Stage 1 Stage 2
Buffer
Multi-stage Process with Buffer
A buffer refers to a storage area between stages where the output of a stage is placed prior to being used in a downstream stage. Allows stages to operate independently
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Process PlanningProcess Planning
Process selection Make-or-buy decisions Specific equipment selection Process plans Process analysis
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Process SelectionProcess Selection
Process Selection: Deciding on the way production of goods or services will be organized
Process selection can involve substantial investment in Equipment Layout of facilities
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To Accompany Russell and Taylor, Operations Management, 4th Edition, 2003 Prentice-Hall, Inc. All rights reserved.
Major Implications of Process SelectionMajor Implications of Process Selection
• Capacity planning• Layout of facilities• Equipment• Design of work systems
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Required Variety,
Required Volume (how many)
Required Flexibility (degree of)
Factors that Affect Process Factors that Affect Process DecisionsDecisions
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Process StrategyProcess Strategy
Overall approach to produce goods and services
Defines:Capital intensityProcess flexibilityVertical integrationCustomer involvement
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Forecasting
Product andService Design
TechnologicalChange
CapacityPlanning
ProcessSelection
Facilities andEquipment
Layout
WorkDesign
Process Selection and System Process Selection and System DesignDesign
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From Function to ProcessFrom Function to Process
Ma
nu
fact
uri
ng
Ac
co
un
tin
g
Sa
les
Pu
rch
as
ing
Product Development
Order Fulfillment
Supply Chain Management
Customer Service
Function Process
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• Variety– How much
• Flexibility– What degree
• Volume – Expected output
Job Shop
Batch
Repetitive
Continuous
Process SelectionProcess Selection
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Types of ProcessesTypes of Processes(Process Flow Structures)(Process Flow Structures)
Projects Job shopBatch productionMass productionContinuous flow
production
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Projects (nonroutine jobs)Job shop
Small scale (e.g. copy center making a single copy of a student term paper)
Batch
Moderate volume (e.g. copy center making 10,000 copies of an ad piece for a business)
Types of Processes (1 of 2)Types of Processes (1 of 2)
Determine how to produce a product or provide a service
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Repetitive- Mass production/assembly
High volumes of standardized goods or services (e.g. Automobile manufacturer)
Continuous Flow Line
Very high volumes of non-discrete goods (eg. Petroleum manufacturer)
Types of Processes (2 of 2)Types of Processes (2 of 2)
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Process Type
Job Shop Appliance repair
Emergency room
Ineffective
Batch Commercialbaking
ClassroomLecture
Repetitive Automotiveassembly
Automaticcarwash
Continuous(flow)
Ineffective Steel Production
Water purification
Product and Service ProcessesProduct and Service Processes
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Process-Focused Strategy ExamplesProcess-Focused Strategy Examples
Bank
© 1995 Corel Corp.
Machine Shop© 1995 Corel Corp.
Hospital© 1995 Corel Corp.
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Repetitive-Focused Strategy - ExamplesRepetitive-Focused Strategy - Examples
Truck
© 1995 Corel Corp.
Clothes Dryer
© 1995 Corel Corp.
Fast Food
McDonald’sover 95 billion served
McDonald’sover 95 billion served
© 1984-1994 T/Maker Co.
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Product-Focused ExamplesProduct-Focused Examples
Paper (Continuous)© 1984-1994 T/Maker Co.
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Dimension Job shop Batch Repetitive Continuous
Job variety Very High Moderate Low Very low
Process flexibility
Very High Moderate Low Very low
Unit cost Very High Moderate Low Very low
Volume of output
Very Low Low High Very High
Product – Process MatrixProduct – Process Matrix
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Process Selection with Break-even Process Selection with Break-even AnalysisAnalysis
A standard approach to choosing among alternative processes or equipment
Model seek to determine the point in units produced (and sold) where we will start making profit on the process or equipment
Model seeks to determine the point in units produced (and sold) where total revenue and total cost are equal
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Process Selection with Process Selection with Break-Even AnalysisBreak-Even Analysis
cf = fixed costv = volume (i.e., number of units produced and sold)cv = variable cost per unitp = price per unit
Total cost = fixed cost + total variable costTC = cf + vcv
Total revenue = volume x priceTR = vp
Profit = total revenue - total costZ = TR - TC
= vp - (cf + vcv)
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Solving for Solving for Break-Even VolumeBreak-Even Volume
TRTR = TC= TCvpvp = = ccff + + vcvcvv
vpvp - - vcvcvv = = ccff
vv((p - cp - cvv)) = = ccff
vv ==
ccff
p p -- c cvv
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Break-Even AnalysisBreak-Even Analysis: Example 1: Example 1
Fixed cost = cf = $2,000Variable cost = cv = $5 per raft
Price = p = $10 per raft
The break-even point is
v v == = = 400 rafts= = 400 raftsccff
p p - - ccvv
20002000
10 - 510 - 5
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Break-Even AnalysisBreak-Even Analysis: Example 1: Example 1
Total cost line
Total revenue
line
Break-even point400 Units
$3,000 —
$2,000 —
$1,000 —
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Break-Even Analysis: Example 2 Break-Even Analysis: Example 2 Choosing Between Two ProcessesChoosing Between Two Processes
Below 2,667, choose ABelow 2,667, choose AAbove 2,667, chooseAbove 2,667, choose B B
$2,000 + $5v= $10,000 + $2v$3v = $8,000v = 2,667 rafts
Process A Process B
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Break-Even Analysis: Example 2Break-Even Analysis: Example 2Choosing Between Two ProcessesChoosing Between Two Processes
| | | |1000 2000 3000 4000 Units
$20,000 —
$15,000 —
$10,000 —
$5,000 —
Total cost of process A
Total cost of process B
Choose process A
Choose process B
Point of indifference = 2,667 Units
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Choosing Between TChoosing Between Threehree Processes Processes
$$$
Fixed cost Variable cost
Fixed cost – Process A
Fixed cost – Process B
Fixed cost – Process C200,000
300,000
400,000
$ Total process C costs
Total p
roces
s A
costs
Process A Process B Process C
V1(2,857) V2 (6,666) Volume
Total process B costs
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Make-or-Buy DecisionsMake-or-Buy Decisions
1.1. Cost2. Available Capacity3. Quality Considerations4. Speed5. Reliability6. Expertise7. Nature of Demand
Make?
Buy?
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Specific Equipment SelectionSpecific Equipment Selection1. Purchase cost
2. Operating cost
3. Annual savings
4. Revenue enhancement
5. Replacement analysis
6. Risk and uncertainty
7. Piecemeal analysis
8. Breakeven analysis
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Transition From Product Design to Transition From Product Design to Process Design:Process Design:
Product and Production DocumentsProduct and Production Documents
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• Engineering drawings– Shows dimensions, tolerances, & materials– Shows codes for Group Technology
• Assembly drawing
-- Shows exploded view of product• Bill of Material
– Lists components, quantities & where used– Shows product structure
Product DocumentsProduct Documents
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Engineering Drawings - Show Engineering Drawings - Show Dimensions, Tolerances, etc.Dimensions, Tolerances, etc.
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Head Neck
Handle
End Cap
Assembly DrawingAssembly Drawing
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Bill of MaterialP/N: 1000 Name: Bicycle
P/N Desc Qty Units Level1001 Handle Bars 1 Each 11002 Frame Assy 1 Each 1
1003 Wheels 2 Each 2 1004 Frame 1 Each 2
Bill of MaterialP/N: 1000 Name: Bicycle
P/N Desc Qty Units Level1001 Handle Bars 1 Each 11002 Frame Assy 1 Each 1
1003 Wheels 2 Each 2 1004 Frame 1 Each 2
Bill of Material ExampleBill of Material Example
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Assembly Chart (Gozinto Chart)Assembly Chart (Gozinto Chart)Bottom bun
Beef pattySaltCheese
LettuceSauceOnions
Middle bun
Beef pattySaltCheese
LettuceSauceOnionsPickles
Sesame seed top bun
Wrapper
SASA
SASA
First-layer assembly
Second-layer assembly
Completed Big Mac
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Assembly Drawing and Assembly Assembly Drawing and Assembly ChartChart
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Process AnalysisProcess Analysis
The systematic examination of all aspects of a process to improve its operation to make it:FasterMore efficientLess costlyMore responsive
Basic toolsProcess flowchartProcess diagramsProcess maps
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Process Flowchart SymbolsProcess Flowchart Symbols
OperationsOperations
InspectionInspection
TransportationTransportation
DelayDelay
StorageStorage
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SUBJECT: Request tool purchase
Dist (ft) Time (min) Symbol Description
D Write order
D On desk
75 D To buyer
D Examine
= Operation; = Transport; = Inspect; D = Delay; = Storage
Process Process FlowcFlowcharthart:: Example Example 1 1
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Process Process Flow Flow ChartChart: Example 2: : Example 2: Hamburger AssemblyHamburger AssemblyDist. (Ft)
Time (Mins)
Chart Symbols
Process Description
- Meat Patty in Storage
1.5 .05 Transfer to Broiler
2.50 Broiler
.05 Visual Inspection
1.0 .05 Transfer to Rack
.15 Temporary Storage
.5 .10 Obtain Buns, Lettuce, etc.
.20 Assemble Order
.5 .05 Place in Finish Rack
3.5 3.15 TOTALS
Value-added time = Operation time/Total time = (2.50+.20)/3.15=85.7%
Ⅾ
Ⅾ
ⅮⅮⅮⅮ
ⅮⅮⅮ
Ⅾ
2 4 1 - 2
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Process FlowchartProcess Flowchart: Example 3: Example 3
Ste
p
Op
erat
ion
Tra
nsp
ort
Insp
ect
Del
ay
Sto
rag
e
Dis
tan
ce(f
eet)
Tim
e(m
in)Description
ofprocess
1
2
3
4
5
6
7
8
9
10
11
Unload apples from truck
Move to inspection station
Weigh, inspect, sort
Move to storage
Wait until needed
Move to peeler
Apples peeled and cored
Soak in water until needed
Place in conveyor
Move to mixing area
Weigh, inspect, sort
TotalPage 1 0f 3 480
30
5
20
15
360
30
20
190 ft
20 ft
20 ft
50 ft
100 ft
Date: 9-30-02Analyst: TLR
Location: Graves MountainProcess: Apple Sauce
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Service Process DesignService Process Design
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Techniques for Improving Service Techniques for Improving Service ProductivityProductivity (1 of 2) (1 of 2)
• Separation
• Self-service
• Postponement
• Focus
• Structure service so customers must go where service is offered
• Self-service so customers examine, compare and evaluate at their own pace
• Customizing at delivery
• Restricting the offerings
Strategy Technique
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Techniques for Improving Service Techniques for Improving Service Productivity Productivity (2 of 2)(2 of 2)
• Modules
• Automation
• Scheduling• Training
• Modular selection of service.
Modular production• Separating services that lend
themselves to automation• Precise personnel scheduling• Clarifying the service options• Explaining problems• Improving employee flexibility
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More Opportunities to Improve More Opportunities to Improve Service ProcessesService Processes
MethodsLayoutHuman ResourceTechnology
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TechnologiesTechnologies
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TechnologyTechnology
Technology: The application of scientific discoveries to the development and improvement of products and services and operations processes.
Technology innovation: The discovery and development of new or improved products, services, or processes for producing or providing them.
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Kinds of TechnologyKinds of Technology
Operations management is primarily concerned with three kinds of technology:Product and service technologyProcess technologyInformation technology
All three have a major impact on:CostsProductivityCompetitiveness
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Technology Technology as a as a Competitive Competitive AdvantageAdvantage
Innovations inProducts and services
Cell phonesPDAsWireless computing
Processing technologyIncreasing productivityIncreasing qualityLowering costsEases flexibility
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Technology AcquisitionTechnology Acquisition
Technology can have benefits but …Technology risks include:
What technology will and will not doTechnical issuesEconomic issues
Initial costs, space, cash flow, maintenanceConsultants and/or skilled employeesIntegration cost, time resourcesTraining, safety, job loss
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Advantages Created by Advantages Created by HighHighTechnology Technology
Advantages: Increased precision Increased productivity Increased flexibility, increased product variety Decreased cost (labor, material, inventory,
transportation and quality costs) Improved product features and quality Decreased pollution Decreased size Decreased power requirements.
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Information TechnologyInformation Technology
Management Information Systems (MIS) Move large amounts of data
Decision Support Systems (DSS) Add decision making support
Expert System Recommend decision based on expert
knowledge
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Enterprise SoftwareEnterprise Software
Collect, analyze, and make decisions based on data
ERP - Enterprise Resource PlanningManaging wide range of processes
Human resources, materials management, supply chains, accounting, finance, manufacturing, sales force automation, customer service, customer order entry
Finding hidden patterns through data mining
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Advanced CommunicationsAdvanced Communications
Electronic data interchange (EDI) Internet, extranets Wireless communications Teleconferencing &
telecommuting Bar coding, RFT Virtual reality
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Process Technology: AutomationProcess Technology: Automation Machinery that has sensing and control devices
that enables it to operate
- Fixed automation
- Programmable automation
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Manufacturing Manufacturing Hardware Hardware TechnologyTechnology
Numerically controlled (NC) machines Controlled by punched tape
Computer numerical controlled (CNC) Controlled by attached computer
Direct numerical control (DNC) Several NC machines controlled by single
computer Robotics Flexible manufacturing systems (FMS)
Includes automated material handling
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Production ProcessProduction Process & & Technology AlternativesTechnology Alternatives
# Different Products or Parts# Different Products or Parts
CIMCIMFlexible
Manufacturing System
Low HighHigh
General Purpose, NC, General Purpose, NC, CNCCNC
Volume of Products or PartsVolume of Products or Parts
Low
HighHigh
DedicatedDedicatedAutomationAutomation
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Flexible Manufacturing Systems Flexible Manufacturing Systems (FMS)(FMS)
Programmable machine tools Controlled by common computer network Combines flexibility with efficiency Reduces setup & queue times
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Flexible Manufacturing SystemFlexible Manufacturing System
Parts
Finishedgoods
Computercontrolroom
TerminalTerminal
CNC Machine
CNC Machine
PalletPallet
Automatic Automatic tool changertool changer
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Manufacturing Software TechnologyManufacturing Software Technology
Computer Aided Design and Computer Aided Manufacturing (CAD/CAM)
Computer Integrated Manufacturing (CIM)
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CAM refers to the use of specialized computer programs to direct and control manufacturing equipment. When CAD information is translated into instructions for computer aided manufacturing, CAM, the result of these two technologies is known as CAD/CAM