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93 Cards in this Set
- Front
- Back
What is operations and supply management
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- the design, operation (internal), and improvement of the systems that create and deliver the firm’s primary products and services
- concerned with the management of the entire system that produces a good or delivers a service |
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Operations
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Manufacturing and service process used to transform resources into products desired by customers (internal factors within the organization)
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Supply
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Processes that move information and material up and down the supply chain (external function moving supplies/products to facilities, ect.)
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Supply Chain Processes
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Planning: Determine how anticipated demand will be met with available resources
Sourcing:involoves the selection of suppliers that will deliver the goods and services needed to create the firms product. Making:Where the major product is produced or the service provided Delivering: logistics process, carriers picked to move the product. Returning:involved the processes for receiving worn-out, defective, and excess products back from the customers and support for customers who have problems with delivered products. |
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Differences between goods and services
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1. Service is an intangible process that cant be weighed or measured while a good in a tangible output
2. service requires some degree of interaction with the customer 3. services are inderently heterogeneous (they vary day to day as a function of the attitudes of the customer and the servers) 4. services as a process are perishable and time dependent 5. specifications of a service are defined and evaluated as a package of features. |
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Page 12 exhibit1.4
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Look in book
pure goods (food products, chemicals, ect)->Core goods (appliances, automobiles ext)->Core services (hotels, airlines ect)_>pure services (teaching, medical advice, ect) |
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Servitization
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a company building service activities into its product offerings for its current users
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efficiency
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doing something at the lowest possible cost
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Effectiveness
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doing the right things to create the most value for the company
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value
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quality/price
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careers
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-major challenges is the field:
1. coordinating the relationship between mutually supportive but separate organizations 2. Optimizing global supplier, production, and distribution networks 3. managing customer touch points 4. raising senior management awareness of operations as significant competitive weapons 5. sustainability/triple bottom line: sustainability: ability to maintain balance in a system. |
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Productivity Ratio
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Productivity=outputs/inputs
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Triple Bottom Line
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Evaluating the firm against social (fair and beneficial business practices toward labor, community and the region), economic (compensate shareholders who provide capital) and environmental criteria.
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Competitive Dimensions
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-Cost or price
-Quality--design quality=set of features the product or service contains and process quality=reliability of the product or service -delivery speed -delivery reliability -coping with changes in demand -flexibility and new-product introduction speed -Support it |
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Tradeoffs
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An operation cant excel simultaneously on ALL competitive dimensions
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Straddling
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occurs when a company seeks to match the benefits of a successful position while maintaining its existing position
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Order Winner
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criteron that differentiated the products or services of one firm from those of another
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Order Qualifier
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screening criteria that permits a firms products to even be considered as possible candidates for purchase.
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Capacity utilization Rate
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Capacity Used/best operating level
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Capacity time Durations
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Long range:greater than one year
intermediate range:monthly or quarterly plans for the next 6-18 months short range: less that one month (daily or weekly scheduling process; making adjustments to eliminate the variance between planned and actual output) |
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Strategic capactiy Planning
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provide an approach for determining the overall capacity level of capital-intensive resources that best support the companys long range competitive strategy
-if capacity is excessive, company may have to reduce process to stimulate demand |
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Focused factory
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a production facility works best when it focuses on a fairly limited set of production objectives
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plant within a plant
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PWP-separate sub-organizations, equipment and process policies ect, for different products (even under the same roof)
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Capacity flexibility
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having the ability to rapidly increase or decrease production levels or to shift production capacity quickly from one product or service to another
-flexible plants, processes, workers |
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Decision Tree
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schemative model of the sequence of steps in a problem and the conditions and consequences of each step
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Planning service capacity
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-Service capacity is more time and location dependent
-Time:capacity must be available to produce a service when it is needed -Location:service capacity must be located near the customers -Volatility of Demand:volatility of demand is high for service 1. services cant be stored 2. customers interact directly with the production system 3. serice demand is directly affected by consumer behavior |
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Inventory Calculation
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inventory=throughput rate X flow time
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Work in process inventory calculation
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WIP inventory=throughput rate X Flow time
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Total Inventory Calculation
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Total inventory= WIP=raw material inventory
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Flow Time Calculation
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flow time=inventory/throughput
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Production Processes:Lead Time
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The time needed to respond to a customers order
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Production Processes: Make to Stock
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firms that serve customers from finished goods inventory
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Production Processes:Assemble to Order
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Combine a number or preassembled modules to meet a customers specifications
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Production Processes:Make to Order
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Make the customers product from raw materials, parts, and components
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Production Processes:Engineer to order
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works with the custoemr to design the product, and then make it from purchased materials, parts and and components
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Inventory Turn
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COGS/Average inventory Value
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Days of Supply
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The inverse of inventory turn scaled to days (Ex: if a firm turns inventory 6 times a year, the dats of supply=1/6 times per year or apprx every 61 days)
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Little's law
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says there is a long-term relationship between the inventory, throughput, and flowtime of a production system in a steady state
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Throughput
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long term average rate that items are flowing through the process
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Flow Time
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Time that it takes a unit to flow through the process from beginning to end
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How production processes are organized:Project layout
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the product remains in a fozed location (high degree of task ordering)
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How production processes are organized:workcenter
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job shop, where similar equipment of functions are grouped together
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How production processes are organized:manufacturing cell
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dedicated area where products that are similar in processing requirements are produced (group parts into families)
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How production processes are organized:Assembly Line
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where work processes are arranged according to the progressive steps bu which the product is made
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How production processes are organized:Continuous Process
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similar to an assembly line;production follows a predetermined sequence of steps, but the flow is continuous
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How production processes are organized:product-process matrix
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the first dimension relates to the volume of a particular product or group of standardized
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Splitting tasks (if we need to increase capacity in a manufacturing setting, what do we do>)
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-Split the task
-share the task -use parallel workstations -use a more skilled worker -work overtime -redesign (last resort) |
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Utilization Calculations (p 116-118)
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??
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Customer Contact
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The physical presence of the customer in the system
-service systems with a high degree of contact are more difficult to control and more difficult to rationalize than those with low degree of contact |
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Service system design matric (p. 102 exhibit 5.1)
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See book:
Degree of customer server contact: -buffered core (no contact -permeable system (some contact) -reactive system (much contact) Sales opportunity vs production efficiency |
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Virtual Service:Pure virtual customer contact
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companies enable customers to interact with one another in an open environment
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Virtual Service:Mixed virtual and actual customer contact
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where customer to interact one with another in a server-moderated environment such as product discussion groups.
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Service Blueprint
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Flowchart to emphasize the importance of process design distinguishing between high and low customer contact
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Line of visibility
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high customer contact aspects of the service (the parts of the process that the customer sees) vs. those activies that the customer does not see
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Poka-Yoke
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procedures that block the inevitable mistake from becoming a service defect; avoid mistakes
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managing cues
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-segment the customers
-train your servers to be friendly -inform you customers of what to expect -try to divert the customers attention when waiting -encourage customers to come during slack periods |
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Line structures: Single channel, single phase
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simplest type of waiting line structure ex: one person barbershop
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line structures: single channel, multiphase
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series of services performed in a fairly uniform sequence;car wash--multiple services--washing, rinsing drying ect
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line structures:Multi channel, multi phase
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two or more services are performed in sequence
ex:admission of patients into a hospital (specific sequence of steps usually followed with several servers so more than one patients at a time can be processed |
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Line structures: Mixed
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Multiple to single:merge
Alternative path structures:two structures that differ in direction |
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DPMO:defects per million opportunities
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DPMO=(# of defects/(#of opporunities for error X #of unites)) X 1,000,000
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Six Sigma
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Philosophy and methods companies use to eliminate defects in their products and processes
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Total Quality Management
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managing the entire organization so that it excels on all dimensions of products and services that are important to the customer
-two goals (1) careful design of the product or service and (2) consistency product the design |
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Malcom Baldrige Award (1987)
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To help companies review and structure their quality programs
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The Quality Gurus Compared (exhibit 6.1 pg 135)
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-Look at book:
Definition of quality: -Crosby:conformance to requirements -Deming-predictable defree of uniformity and dependability at low cost and suited to the market -juran-fitness for use (satisfies customers needs) |
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Design Quality
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the inherent value of the product in the marketplace
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conformance quality
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the degree to which the product or service design specs are met
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quality at the source:
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the person who does the work takes responsbility for making sure that his or her output meets specs
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dimensions of quality
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performance, features, reliabiltiy, serviceability, asethics, perceived quality
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Costs of Quality
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costs that are the difference between what can be expected from excellent performance and the current costs that exist
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appraisal costs
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costs of the inspection, testing aand other tasks to ensure that the product of process is acceptible
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prevention costs
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the sum of all the costs to precent defects
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internal failure costs
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costs for defects incurred within the system
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external failure costs
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costs for defect that pass through the system (ie customer warranty replacements, product repair, complaints)
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ISO 9000
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based on 8 quality management principles; international reference for quality management requirements in a B2B dealing
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ISO 14000
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primarily concerned with environmental managemen; three pronged approach for dealing with environmental challenges
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6 sigma methodology
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DMAIC:
define measure analyze improve control (dumb managers always ignore customers) -focus is understanding and achieving what the customer wants (key to profitability) |
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variation
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as variation is reduced, quality is improved
-it is impossible to have 0 variability (therefore there are design limit\s about the target that the process must fall into) |
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Statistical Process control
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involves testing a random sample of output from a process to determine whether the process in producing items within a preselected range
-sampling attributes -sampling variables |
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p calculation
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p=total #defects from ALL samples/(number of samples X Sample size)
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Standard deviation (s)
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=square root of p(1-p)/n
**Do example 6.3 |
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UCL-upper process control limit
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p+(3 X S)
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LCL:lower control limit
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p-(3 X S)
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EVM
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Step 1: Calculate the Budgeted Cost of Work Scheduled (value or cost of the project that is expected given the project at time “X”)
Step 2: Calculate the Budgeted Cost of Work Performed (actual value of the project to date at point “X”) Step 3: Obtain the Actual Cost (from the accounting records for the project) Step 4: Calculate key performance measures for the project - schedule variance - schedule performance index - cost variance - cost performance index * EXAMPLE 7.1 |
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Types of development projects
(pg 181 exhibit 7.1) |
Look in book
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project management
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planning, directing and controlling resources to meet the technical cost and time constraints of the project
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Structuring Projects:Pure project
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"skunkworks" a self containted team works full time on the project
advantages: project manager has full authority over the project, team members report to one boss, lines of communication are shortened, team pride, motivation and commitment are high disadvantages: duplication of resources, organizational goals and policies are ignored, organization falls behind in its knowledge of new technology, worry about life-after-project |
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Structuring Projects:Fuctional Projects
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Project within a functional division
advantages;team members can work on several projects, technical expertise maintained even if individuals leave, functional area is home eve after the project is completed, synergistic solutions to a projects technical problems disadvantages:asepects of the project that arent directly related to the functional area are shortchanged, weak team motivation, needs of the clients are secondary and are responded to slowly |
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Structuring Projects:Matrix Project
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Attempts to blend properties of functional and pure project sturctures-each project utilizes people from different functional areas;project manger decides what tasks and when they will be performed;functional manager controls which people and technologies are used.
-advantages:communication between functional divisions enhanved project manager held responsible for project completion duplication of resources in minimized, team members have a functional home after project completion, policies of parent prganization are followed Disadvantages:there are two bosses, doomed to failure unless project manager has strong negotiating skills |
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Work breakdown structure
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defines the heiarchy of project tasks, subtasks, and work packages;breaks down project into manageable pieces.
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Gantt Chart
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"bar Chart" shows the amount of time involved and the sequence in which activities can be performed
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EVM: Earned value management
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technique for measuring project progress in an objective manner; combine measurements of scope, cost, and schedule of project; measures relative success of a project at a point in time
-need a project plan that identigies the activities to be done -need a valuation of each activity work (planned value) -need the predefined costing rulers (metrics) -EXAMPLE 7.1 |
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Critical path method
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1. identify each activity to be done in the project and estimate how long it will take to complete each activity
2. determine the required sequence of activities and construct a network reflecting the precedence relationships 3. determine the critical path (form the longest chain in terms of their time to complete) 4. determine the early start/finish and late start/finish schedule *Look at graphs and descriptions in book for more clarification |