03134nam a2200421 4500 20260818094542.0 240398 th eng .b10688626 AIT Thesis no. 1173 Akhtar, Mohammad Saeed The economic design of control charts incorporating the effect of operator fatigue Bangkok : Asian Institute of Technology, 1977 45 p. Thesis ; no. 1173 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand Thesis (M.Eng.) - Asian Institute of Technology, 1977 This study investigates the relationship between operator fatigue and quality deterioration. Based on t he data collected from a selected factory, it is found that a straight line is the best fit for the relationship. The finding is incorporated in the design of economic quality control chart models for a mass production man-machine process. As a matter of fact, the process may go out of control because of the machine errors or the human errors due to fatigue. If it is a machine error, t he machine can be readjusted. The human fatigue continuously increases the risk of false indication by the control chart. Model s formulated in this study are based on a trade off between the two types of risks involved: (a) indication of a shift in the process when non has taken place and (b) failure to indicate a shift when one has really occurred. Models are developed for attributes and variables control charts to minimize the total cost given by a set of optimal parameters the sample size; the multiple of standard deviation which determines the spread of control limits; and the sampling frequency. Data from a factory has been used to test the applicability of the models . Quality control Industrial management Techapun Raengkhum, Chairperson Pakorn Adulbhan, Examination Committee Sharif, M. N., Examination Committee The Government of New Zealand, Scholarship Donor Asian Institute of Technology. Thesis ; no. 1173 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B23225 .b10688626 mnait x 251215 2 951012 m a x 4 mnait mnait mnarc 20 40 Barcode : 30050003023289 CREATED : 1994-05-19 RECORD # : i10885122 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003023248 CREATED : 1994-05-19 RECORD # : i10885134 LPATRON : 1012871 LCHKIN : 2000-03-25 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160088026 CREATED : 2016-04-05 RECORD # : i1297156x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 33123 33123 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 1173 30050003023289 2026-08-18 09:45:42 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 1173 30050003023248 2026-08-18 09:45:42 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. 1173 30050160088026 2026-08-18 09:45:42 2026-08-18 40