Setting base stock levels using product-form queueing networks

Article Abstract:

A manufacturing system that makes different products in a make-to-stock mode is examined. A simple pull-type production control policy for a multiproduct make-to-stock kanban environment is proposed. This requires the release of a new unit of a product onto the shop floor when the total work-in-process and finished goods inventory for the product is below a set base stock level. Under the assumption that the work-in-process inventory possesses a steady state distribution and that different costs incurred for carrying in-process exist, it is demonstrated that the cost minimizing base stock level for each product is an important fractile of the steady state distribution of the total work-in-process inventory of the product. Specific formulas for the base stock levels under standard product-form assumptions are developed through the manipulation of the relationship between the make-to-stock system and an open queueing network.

---

A broader view of the job-shop scheduling problem

Article Abstract:

A complicated job-shop scheduling problem is considered. This problem involves three scheduling decisions: due-date setting, job release and priority sequencing, as well as several performance measures including the reduction of the work-in-process (WIP) inventory and the lessening of the due-date lead time of jobs. A two-step solution to this scheduling problem is developed. The first step involves reducing the WIP inventory by releasing and sequencing jobs depending on the accomplishment of jobs at a given rate. The second step requires the scheduling of due dates in such a way that will cut due-date lead time, depending on the constraint on the proportion of late jobs. Several principles for enhancing the performance of a two-station job-shop are presented.

---

Due-date setting and priority sequencing in a multiclass M/G/1 queue

Article Abstract:

This study examined the relationship between setting job due-dates and sequencing jobs according to priority in a multiclass M/G/1 queueing system. New management policies that would deal with the problem of simultaneous job-setting and priority sequencing were proposed and tested against conventional due-date management policies in a simulation study. The proposed policies were found to be more effective.

Reports, Management research

Similar abstracts:

• Abstracts: The pointwise stationary approximation for queues with nonstationary arrivals. A queueing system with auxiliary servers
• Abstracts: IBM and Siemens report developing production model for new chip series. IBM builds the first 16-Megabit chip to be made on existing production line
• Abstracts: A perspective on the stock market's fixation on accounting numbers. Accounting disclosures and the market's valuation of oil and gas properties
• Abstracts: FCC opens phone sector to cable firms. FCC moves to open up a portion of radio spectrum to new services
• Abstracts: Two U.S. firms outpace Japan rivals; IBM has lead in producing latest chips. For National Semiconductor, revenue is the challenge; CEO's jump to Apple makes continued improvements uncertain

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.