Added a new chapter on why modern warehouses are more efficient than older ones. (This focuses on the building itself rather than the processes therein.)
Added new exercises, plus included more solutions for students to check their work.
Added an appendix with a glossary of notation, thanks to a suggestion by Ronald Mantel.
Many small improvements and corrections, thanks to Ronald Mantel.
Improved supporting software: A complete re-write of WhPickPathOptimizer has simplified data input and will handle more general layouts. A new command-line version of WhAffinityAnalyzer now handles arbitrarily large order histories. WhHeatMap now defaults to colors that are color-blind safe, printer safe, and copier safe.
Added an industrial data set to the supplementary materials, along with suggested activities in data-mining, profiling, and warehouse design.
Fixed all known errors
Added more material on congestion and on pallet-building to Chapter 7 (cartons).
Added explanation of pick-to-light logic to Chapter 11 (high-volume order-picking).
Polished presentation of dual-control in unit-load chapter.
More homework problems.
Fixed all known errors.
Documentation for computer programs now includes explanations of how to run them with the new Java security settings.
Added material on single versus dual cycle to chapter on unit-load.
Expanded section on Warehouse Management Systems.
Clarified and corrected some homework problems, plus increased the range of difficulty from easy to hard.
Made many small improvements to formatting, consistency of terminology and notation.
Fixed all known errors from previous errata.
Clarified and extended some issues in case-picking from pallet.
Added analysis of when to re-direct big picks to bulk storage
New homework problems (and some solutions corrected)
Corrects all known typos from previous editions.
Began removing or simplifying some material judged to be of marginal interest.
Moved more figures to tikz or pgfplots for more uniform appearance
Fixed or extended some supporting material: WhHeatMap now lets users choose arbitrary colors with which to color a map of the warehouse. Fixed a bug in PickPathOptimizer that prevented the program running under Java 1.6.