An optimization approach for scheduling of jobs on lines of press machines

Bu çalışma, 17-18 Mayıs 1997 tarihinde Miami[ABD]'de 6th Industrial Engineering Research Conference'de bildiri olarak sunulmuştur.In this study, the aim is to maximize the capacity utilization of a press line using mathematical tools in given or optimized time frames. Similar to a facility layout problem, the jobs to be scheduled are optimally located and fitted into a rectangular frame where the horizontal length is the lime horizon of the scheduling effort and the vertical length is the total number of press machines ordered sequentially line after line. A mixed integer programming model is established in order to fill in the rectangular time-machine frame with small rectangular time-operation job elements without any overlap among elements. Depending on the number of job elements in a scheduling period, the problem earn conveniently be handled by known branch and bound algorithms and such a sample problem is solved here for demonstrative purposes. Application of this scheduling optimization is currently being tested in a car manufacturer's press shop to be integrated into an existing manufacturing resource planning system.Council Ind Engn Acad Dept HeadsInst Ind Engineer

Accelerating The Generation Of Work Measurement Standards Through Automatic Speech Recognition: A Laboratory Study

Automatic Speech Recognition (ASR) is an emerging technology. As often is the case with new technologies, there is little guidance available on the considerations accompanying its incorporation into industrial settings. This paper presents the steps and factors to consider for successful integration of ASR systems into industrial environments. In particular, this work shows the successful application of ASR within the context of the generation of work measurement time standards. The generation of time standards is a time consuming process that has always slowed the work measurement task and increased its costs. It is shown that by using ASR the work analyst can develop more efficient, more reliable, detailed time estimates in real time, without the need for a keyboard or paper. In laboratory experiments, time reductions of 70% were demonstrated in generating time standards for common manual labour tasks. In two field studies, positive user satisfaction was expressed in the application of ASR for generating time standards. © 1998 Taylor & Francis Group, LLC

Development Of An Intelligent Castability And Cost Estimation System

Performing the castability analysis of a part and its cost estimation requires substantial knowledge and experience. It is also time consuming and dependent on the expert personnel available. This paper describes the development of an intelligent system for castability analysis and product cost estimation for a permanent-mould casting company. The system allows personnel with little technical knowledge to analyse the part, estimate the cost, and prepare quotations with little or no assistance from an expert whose time is better utilized on high potential quotations and more direct product development activities. © 1998 Taylor & Francis Group, LLC

Attrition Rates of Doctoral Students: Potential Effects of an Interdisciplinary and International Doctoral Workshop?

No abstract available

Attrition Rates of Doctoral Students: Potential Effects of an Interdisciplinary and International Doctoral Workshop?

No abstract available