Predicting (Individual) Software Productivity
IEEE Transactions on Software Engineering
February 1991, pp. 196-207, vol. 17
https://www.computer.org/csdl/journal/ts/1991/02/e0196/13rRUwgQpsb
Semianalytical Productivity Models for Perforated Completions
February 1991
Society of Petroleum Engineers
https://www.onepetro.org/journal-paper/SPE-18247-PA
Lead Time and Cost Reduction: A CNC Programming System for Motor Vehicle Prototypes
Jerry Fireman
Integrated Manufacturing Systems
ISSN: 0957-6061
Publication date: 1 March 1991
Switching to the MasterCam CNC programming system has allowed Ford Motor Company research staff to produce a wide variety of prototype parts with complex contours on CNC machine tools instead of building patterns by hand and casting the parts.
The advantages have been impressive. (1) Reduction in the cost of the average prototype part by 75 per cent. (2) Lead time has been reduced from an average of three weeks for pattern making, mould making and casting to a typical 48 hours for programming and CNC machining; and (3) prototype quality has been greatly improved because the machined parts possess mathematically sound contours rather than hand filed approximations.
https://www.emerald.com/insight/content/doi/10.1108/09576069110142207/full/html
A task-force approach to stuck pipe has produced more than a 70% reduction in BP Exploration Operating Co.'s worldwide stuck-pipe costs during 1989 and 1990.
May 27th, 1991
https://www.ogj.com/drilling-production/article/17238426/task-force-reduces-stuckpipe-costs
Factors Affecting Masonry‐Labor Productivity
Steve R. Sanders and H. Randolph Thomas
Journal of Construction Engineering and Management
Volume 117 Issue 4 - December 1991
Standardized data‐collection techniques are used to collect and consolidate data from 11 central Pennsylvania masonry projects. Exploratory analyses are performed to determine which factors most affect productivity. The factors identified are the work type, building element, construction methods, design requirements, and weather. More detailed analyses indicate that: (1) Data from multiple projects can be consolidated to obtain statistically valid results; (2) repetitive designs can effect a 30% improvement in productivity; (3) designs that require extensive layout and cutting can negatively affect productivity by as much as 40%; and (4) the effects of weather on masonry productivity are not well understood and deserve additional research.
https://ascelibrary.org/doi/10.1061/%28ASCE%290733-9364%281991%29117%3A4%28626%29
No comments:
Post a Comment