Papers by Wipawee Tharmmaphornphilas
Engineering Management Journal, 2002
ABSTRACT This article describes an approach and methodology that explicitly considers the assessm... more ABSTRACT This article describes an approach and methodology that explicitly considers the assessment of human capital in a lean manufacturing environment supported by cellular manufacturing. It details a systematic approach where human capital is inventoried in the form of developing a skills database. Specific critical skills are identified, grouped, and placed onto a Skills Inventory Form (SIF). The SIF is used to assess the skill levels of each worker via an employee, supervisor, and consensus assessment approach. The approach is illustrated in a Fortune 100 company, showing how to use it to drive training requirements, change hiring practices, assign workers, and establish compensation and reward systems.
AIHA journal : a journal for the science of occupational and environmental health and safety
This research developed worker schedules by using administrative controls and a computer programm... more This research developed worker schedules by using administrative controls and a computer programming model to reduce the likelihood of worker hearing loss. By rotating the workers through different jobs during the day it was possible to reduce their exposure to hazardous noise levels. Computer simulations were made based on data collected in a real setting. Worker schedules currently used at the site are compared with proposed worker schedules from the computer simulations. For the worker assignment plans found by the computer model, the authors calculate a significant decrease in time-weighted average (TWA) sound level exposure. The maximum daily dose that any worker is exposed to is reduced by 58.8%, and the maximum TWA value for the workers is reduced by 3.8 dB from the current schedule.
Engineering Journal, 2010
Engineering Journal, 2012
ABSTRACT
International Journal of Production Research, 2002
This paper considers the problem of assigning workers to manufacturing cells in order to maximize... more This paper considers the problem of assigning workers to manufacturing cells in order to maximize the effectiveness of the organization. Organization effectiveness is assumed to be a function of the productivity, output quality, and training costs associated with a particular worker ...
Computers & Industrial Engineering, 2005
The application of cellular manufacturing in batch-type environments is a well-known manufacturin... more The application of cellular manufacturing in batch-type environments is a well-known manufacturing strategy that typically improves manufacturing efficiency by utilizing the philosophy of group technology. It is also important that for the successful implementation of cellular manufacturing, that one focuses both on technical issues (cell formation and design) and human issues. Unfortunately, human issues are typically not examined as rigorously as often as technical issues. This paper presents an overview and evaluation of the diverse range of human issues involved in cellular manufacturing based on an extensive literature review. Further, a survey to determine the importance of eight different human issues in cellular manufacturing was administered to a sample of academics, managers, and workers involved in cellular design and implementation results are presented and discussed. q
Annals of Operations Research, 2007
This research proposes a methodology for developing robust job rotation schedules to reduce the l... more This research proposes a methodology for developing robust job rotation schedules to reduce the likelihood of low back injury due to lifting. We consider settings that have uncertain task demands and different worker profiles in order to simulate real settings. We begin by considering deterministic versions of the problem and solve these using mathematical programming. Because mathematical programming cannot be
Advances in Engineering Software, 2001
Minimizing material transportation is an important design object for many facilities. In traditio... more Minimizing material transportation is an important design object for many facilities. In traditional facility design, departments and work centers have been located based on interdepartmental flow patterns. We introduce a methodology that extends the planning process to also consider intradepartmental flow patterns. A math programming approach is developed that uses an objective function and constraints that specifically addresses both the
Annals of Operations Research, 2004
Job rotation is a useful tool that can be used in many work settings to produce task variety for ... more Job rotation is a useful tool that can be used in many work settings to produce task variety for workers and to reduce worker fatigue and injuries. Developing a job rotation plan requires determining the set of jobs to be included in the rotation, the rotation sequence, and the proper length of the rotation interval. Previous research has considered both
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Papers by Wipawee Tharmmaphornphilas