A Group Technology Approach to Master Scheduling of Shipbuilding Projects (The National Shipbuilding Research Program)

Outfit planning provides a means to increase productivity and schedule enhancements through zone outfitting, group technology, and prefabrication. Puget Sound Naval Shipyard has gained an understanding of outfit planning through publications by the Maritime Administration's National Shipbuilding Research Program. In an attempt to increase efficiency, Puget Sound Naval Shipyard is using outfit planning methods to overhaul, alter, and repair U.S. naval ships. One project targeted for outfit planning is the forward-end electronic package on submarines. This paper describes Puget Sound's efforts to use outfit planning concepts in developing work packages for the forward end ship alterations.

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A Group Technology Approach to Master Scheduling of Shipbuilding Projects

Journal of Ship Production ◽

10.5957/jsp.1989.5.4.249 ◽

1989 ◽

Vol 5 (04) ◽

pp. 249-255

Author(s):

Jon Gribskov

Keyword(s):

San Diego ◽

Group Technology ◽

Critical Path ◽

Scheduling Algorithms ◽

Network Scheduling ◽

Ship Construction ◽

Master Scheduling ◽

Level Loading ◽

Critical Resources ◽

Interim Products

This paper describes the current Master Scheduling approach used at National Steel and Shipbuilding Company (NASSCO) in San Diego. Master schedules at NASSCO focus on key interim products involved in ship construction: units, blocks, (on-board) zones, and tests. Network scheduling algorithms (that is, Critical Path) are used. Each interim product has an associated subnet. Categorization by type is used to simplify the task of developing and maintaining activity lists, dependencies (predecessor/successor relationships) and durations for the thousands of activities. Manual level-loading of critical resources is incorporated into and supported by the overall scheduling process. The paper includes some discussion of problems encountered in the implementation of this scheduling approach.

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Tinkering with cognitive gadgets: Cultural evolutionary psychology meets active inference

Behavioral and Brain Sciences ◽

10.1017/s0140525x19001018 ◽

2019 ◽

Vol 42 ◽

Author(s):

Paul Benjamin Badcock ◽

Axel Constant ◽

Maxwell James Désormeau Ramstead

Keyword(s):

Evolutionary Psychology ◽

Research Program ◽

Active Inference ◽

Innovative Research ◽

Cognitive Faculties ◽

Cultural Evolutionary ◽

The Relationship

Abstract Cognitive Gadgets offers a new, convincing perspective on the origins of our distinctive cognitive faculties, coupled with a clear, innovative research program. Although we broadly endorse Heyes’ ideas, we raise some concerns about her characterisation of evolutionary psychology and the relationship between biology and culture, before discussing the potential fruits of examining cognitive gadgets through the lens of active inference.

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