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random notes
- -Companies are once again using operations as a competitive weapon, and achieving stronger market positions because of it
- -Best practice firms are often able to achieve increments in multiple dimensions simultaneously, or to at least hold in the other three while an improvement in the fourth is implemented
- -As the demands of customers increase over time, yesterday's order winners have become today's order qualifiers
- -Any delay in a critical activity will result in delay in the project overall; they have no slack
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operations and supply chain management (OSCM)
oversees all activities that are directly related to making a product or providing a service; responsible for the conversion of inputs of materials, money energy, people, and information into useful goods and services; the design, operations and improvement of systems that create and deliver the firm's primary products and services
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five P's
people, plants, parts, processes, and planning and control; transformations are achieved through these
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types of operation management decisions
- -strategic (long range business plans, such as acquisition of new resources)
- -tactical (medium range decisions, typically for the utilization of existing resources)
- -operational (ones that are narrowly focused for a short time frame, usually involving the execution of schedules or control activities)
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role of a company's operations
- Stage 1 - Internally Neutral (don't mess up). The objective here is limited to minimizing the downside.
- Stage 2 - Externally Neutral (keeping up with the Joneses). Here operations is only required to match the performance of the competition. Industry practice is followed, but not initiated.
- Stage 3 - Internally Supportive (be consistent with corporate strategy). Here, a strategy is formulated and adhered to. Processes and technologies are screened for strategic consistency.
- Stage 4 - Externally Supportive (be a full partner in the company). Here, operations is used to its fullest capability to seek a competitive advantage. Operations is fully involved with all major decisions, adopting a proactive rather than a reactive role.
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cost priority
Companies that compete primarily or exclusively on this priority usually offer a product that is essentially a commodity: little differentiation exists between competitors’ products. These tend to be mature industries with high volume demand. Competition tends to be high.
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product quality priority
High performance products tend to be the “elite” products within the trade. ex. there are cars, and then there are BMWs
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reliability or process quality priority
refers to the degree to which the product meets its own standards, and is therefore predictable to the customer. McDonald’s may not be a high performance restaurant, but it delivers it’s product with an enviable degree of consistency.
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delivery speed and delivery reliability priority
dependable delivery requires a just-in-time system; ex. FedEx
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flexibility priority
the ability to quickly change to meet the needs of your customers. New product introduction, a wide product line, and swift changeovers are all facets of this dimension.
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changes in demand priority
in a volatile marketplace, the company that is capable of rapidly scaling up and scaling down its process efficiently gains a competitive edge in the marketplace. ex. the mall at christmas
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order qualifier
feature that must be present in the product for its purchase to even be considered; minimum level of acceptability
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order winner
product feature used to then select the product to be purchased from the pool of "acceptable" products which meet the order qualifying standards
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4 steps to develop your strategy
- 1. Segment the market according to the market group.
- 2. Identify product requirements, product
- potential, and profit margins for each group.
- 3. Determine order winners and qualifiers for each group.
- 4. Convert order winning criteria into specific performance requirements.
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productivity
outputs/inputs; the higher the ratio the better the performance of the unit being measured
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labor productivity
outputs/labor; how much labor was required to achieve the level of output realized
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sources of productivity growth
external factors (environment, safety), improved labor units (education), capital-labor substitution (labor-->automation), economies of scale (the bigger the better), and technological change (new equipment)
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pure project
an autonomous, self-contained team is created which works full time on the project
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functional project
occurs when the project is housed within a single functional division; team members remain a part of their functional units and typically are not dedicated to the project
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matrix project
mix of functional and pure project structures; utilizes people from several different functional areas; project manager decides what and when tasks will be performed but the functional managers control which people and technology are used
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interdependencies/precedence relationships
occurs when, for technical or other reasons, a task can not be started until another is completed; activity that needs to be completed immediately before another activity
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critical path method (CPM)
the sequence of activities in a project that forms the longest chain in terms of their time to complete; this path contains zero slack time; it is possible for there to be multiple critical paths in a project
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early start (ES)
the maximum of the EF's for all the predecessor activities, if node has no predecessor then this equals 0
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early finish (EF)
the ES for that activity plus the required time; ES + duration
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late start (LS)
the LF for the activity minus the required time; LF - duration
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late finish (LF)
the minimum LS of all the node's immediate successors; if the node has no successor, then the LF = expected duration of the project (the critical path length)
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slack
the amount of time an activity can be delayed without delaying the completion time of the project; the difference between the late and early start times of an activity
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most economical duration for a project
spending money in one area (crashing costs for an activity), we will avoid certain other costs and thus still come out ahead
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crash costs
activity direct costs; costs to reduce the length of an activity by 1 time period; total cost of performing a task at its minimum duration
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administrative costs
project indirect costs; costs to manage the project; for every time period that the project continues, a certain amount of money is required just to administer the project, over and above the cost of performing the various activities that make up the project
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penalty costs
if the project is completed by a certain time, these costs are avoided, however, for every time unit beyond the deadline, a penalty cost is imposed
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conversion process
changes the substance of the project; ex. turning wood to paper; material is transformed from one substance to another
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fabrication process
changes the shape or form of the product; ex. cutting and sewing material to make a jacket
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assembly process
separate parts are physically joined or combined; ex. putting together a computer - each part remains physically distinct
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testing process
some form of inspection is occurring; the part is examined and measuring against some criteria and is either passed or not
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job shop
produces a wide variety of products in a wide variety of quantities; jumbled flow of materials through facility; equipment is grouped by function; ex. hospital
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batch
typically has a subset of products which are produced regularly; still has jumbled flow, but some level of standardization; equipment is grouped by function, which the product seen as moving from department to department
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assembly line
flow of product moves in a line, equipment is organized around the required sequence of operations; low variety of products in high volume
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continuous flow
used for commodity items; produces a very high volume; rarely, if ever, stops; equipment is organized along the required sequence of operations; items are usually not discrete
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concept development
first step in product development; design is laid out and the general product architecture is developed; ; target market is defined
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product planning
second step in product development; investment requirements are determined; market is further defined by small scale testing and interaction with potential customers
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product/process engineering
third step in product development; prototypes are built and decisions about tooling and equipment to be used in full scale production are made
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pilot production/ramp-up
fourth step in product development; non-commercial production begins; testing for ability to produce desired volumes; detailed testing of the product; production begins slowly with volumes increasing to demand levels gaining experience and confidence
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concurrent/simultaneous engineering
parallel approach, where as many steps as possibly are occurring simultaneously; attempt to involve as many groups in the project as early as possible
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industrial design
designing with the needs of the customer in mind; attempts to reduce the time to develop a new product
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Quality Function Deployment (QFD)
primary tool of this is the House of Quality; it forces member to work together in a cooperative rather than competitive manner
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capacity
the ability to hold, receive, store, or accommodate; the amount of resource inputs available relative to output requirements over a particular period of time
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capacity focus
a production facility works best when it focuses on a fairly limited set of production objectives; it should select a limited set of tasks that contribute the most to corporate objectives
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capacity flexibility
the ability to rapidly increase or decrease production level, or to shift production capacity quickly from one product or service to another; achieved through flexible plants, processes, and workers
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how to determine capacity requirements
- 1. use forecasting techniques to predict sales for the individual products within each product line
- 2. calculate equipment and labor requirements to meet product line forecasts
- 3. project labor and equipment availabilities over the planning horizon
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service capacity
time-and location-dependent (cannot be taken home and used later), subject to volatile demand fluctuations, and utilization directly impacts service quality
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the product line approach
treats the delivery of the service as a manufacturing process rather than a service process; the key focus is the efficient production of results not on the attendance on others; ex. McDonalds
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the self-service approach
places a greater burden on the customer in the production of the service; ex. salad bar or gas station
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the personal attention approach
face-to-face contact; direct contact with a service provider who tailors the service to the customer
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psychology of queues
- -Unoccupied time feels longer than occupied time (ex. filling out bank slips while waiting at the bank)
- -Pre-process waits feel longer than in-process waits (waiting in line verse waiting to wait)
- -Anxiety makes waits seem longer (possibly wrong line?)
- -Uncertain waits are longer than known, finite waits (ex. 1 hour from this point or reservations)
- -Unexplained waits are longer than explained waits (reasons)
- -Unfair waits are longer than equitable waits (anything other than first come first serve should be explained)
- -The more valuable the service, the longer the customer will wait
- -Solo waits feel longer than group waits (misery loves company)
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operations
manufacturing, service, and health care that are used to transform the resources employed by a firm into products desired by customers
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supply (chain) network
processes that move information and material to and from the manufacturing and service processes of the firm; the pipeline movement of the materials and information needed to produce a good or service
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service
intangible process, cannot be patented, cannot be tried out and tested by a costumer before purchase, requires some degree of interaction with the customer, heterogeneous (vary from day to day and even hour by hour as a function of the attitudes of the customer and the servers), perishable and time dependent
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servitization
a company building service activities into its product offerings for its current users, that is, its installed base
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efficiency
doing the right things to create the most value for the company; produce a good or provide a service by using the smallest input for resources; ex. using the fewest people possible at a bank counter
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effectiveness
doing the right things to create the most value for the company; ex. minimizing the amount of time customers need to wait in line
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value
quality divided by price paid; competitive "happiness" is being able to increase quality and reduce price while maintaining or improving profit margins
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mass customization
producing products to order in a lot sizes of one
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sustainability
the ability to maintain balance in a system; a strategy that is designed to meet current needs without compromising the ability of future generations to meet their needs
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triple bottom line
relates to the economic, employee, and environmental impact of the firm's strategy; economic prosperity, environmental stewardship, and social responsibility
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planning
process needed to determine the set of future actions required to operate an existing supply chain
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sourcing
the selection of suppliers
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making
a type of process where the major product is produced or services provided
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delivery
type of process that moves products to warehouses or customers
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returning
processes that involve the receiving of wornout, defective, and excess products back from customers and support customers who have problems
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total quality control
a philosophy which aggressively seeks to eliminate causes of production defects
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business process reengineering
an approach that seeks to make revolutionary changes as opposed to evolutionary changes
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operations and supply chain strategy
setting broad policies and plans for using the resources of a firm to best support the firm's long-term competitive strategy
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straddling
occurs when a firm seeks to match what a competitor is doing by adding new features, services, or technologies to existing activities. This often creates a problem if certain trade-offs need to be made
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order winner
a dimension that differentiates the products or services of one firm from those of another
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order qualifier
a dimension used to screen a product or service as a candidate for purchase
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activity-system maps
a diagram that shows how a company's strategy is delivered through a set of supporting activities
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core capabilities
skills that differentiate a manufacturing or service from its competitors
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operation and supply competitive dimensions
cost, quality, delivery speed, delivery reliability, coping with changes in demand, flexibility, and new-product introduction speed, and other product-specific criteria
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project
a series of related jobs usually directed toward some major output and requiring a significant period of time to perform
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project management
planning, directing, and controlling resources (people, equipment, material) to meet the technical, cost, and time constraints of a project
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work breakdown structure
the hierarchy of project tasks, subtasks, and work packages
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activities
pieces of work within a project that consume time. the completion of all the activities of a project marks the end of the project
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gantt chart
shows in a graphic manner the amount of time involved and the sequence in which activities can be performed
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earned value management
technique that combines measures of scope, schedule, and cost for evaluating project progress
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