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PrinciplesOfProductDevelopmentFlow.ControllingFlowUnderUncertainty

PrinciplesOfProductDevelopmentFlow.ControllingFlowUnderUncertainty

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F1:    The Principle of Congestion Collapse

When loadinb becomes too high, we will see a sudden and catastrophic drop in output

F2:    The Peak Throughput Principle

Control occupancy to sustain high throughput in systems prone to congestion

F3:    The Principle of Visible Congestion

Use forecasts f expected flow time to make congestion visible

F4:    The Principle of Congestion Pricing

Use pricing to reduce demand during congested periods

F5:    The Principle of Periodic Resynchronization

Use a regular cadence to limit the accumulation of variance

F6:    The Cadence Capacity Margin Principle

Provide sufficient capacity margin to enable cadence

F7:    The Cadence Reliability Principle

Use cadence to make waiting times predictable

F8:    The Cadence Batch Size Enabling Principle

use a regular cadence to enable small batch sizes

F9:    The Principle of Cadenced Meetings

Schedule frequent meetings using a predictable cadence

F10:    The Synchronization Capacity Margin Principle

To enable synchronization, provide sufficient capacity margin

F11:    The Principle of Multiproject Synchronization

Exploit scale economics by synchronizing work from multiple projects

F12:    The Principle of Cross-Functional Synchronization

Use synchronized events to facilitate cross functional trade-offs

F13:    The Synchronization Queueing Principle

To reduce queues, synchronize the batch size and timing of adjacent processes

F14:    The Harmonic Principle

Make nested cadences harmonic multiples

F15:    The SJF Scheduling Principle

When delay costs are homogeneous, do the shortest job first

F16:    The HDCF Scheduling Principle

When job durations are homogeneous, so the high cost-of-delay job first

F17:    The WSJF Scheduling Principle

When job durations and delay costs are not homogeneous, use WSJF (weighted shortest job first)

F18:    The Local Priority Principle

Priorities are inherently local

F19:    The Round-Robin Principle

When task duration is unknown, time-share capacity

F20:    The Preemption Principle

Only preempt when switching costs are low

F21:    The Principle of Work Matching

Use sequence to match jobs to appropriate resources

F22:    The Principle of Tailored Routing

Select and tailor the sequence of subprocesses to the task at hand

F23:    The Principle of Flexible Routing

Route work based on the current most economic route

F24:    The Principle of Alternate Routes

Develop and maintain alternate routes around points of congestion

F25:    The Principle of Flexible Resources

Use flexible resources to absorb variation

F26:    The Principle of Late Binding

The later we bind demand to resources, the smoother the flow

F27:    The Principle of Local Transparency

Make tasks and resources reciprocally visible at adjacent processes

F28:    The Principle of Preplanned Flexibility

For fast responses, preplan and invest in flexibility

F29:    The Principle of Resource Centralization

Correctly managed, centralized resources can reduce queues

F30:    The Principle of Flow Conditioning

Reduce variability before a bottleneck

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