Open Access
Research Article·pp. 1345–1358·Vol. 47, Issue 4Apr 2026
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 01 Apr 2026DOI: 10.47974/JIOS-1424 In this paper: Shin et al. [2] proposed the process parameters and tolerance designs model. Their model firstly obtained the process mean and standard deviation. Then the tolerance model is formulated for obtaining...
Open Access
Research Article·pp. 429–436·Vol. 47, Issue 2Feb 2026
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 02 Feb 2026DOI: 10.47974/JIOS-1423 In this paper: In this article, the paper addresses a modified EMQ model with inspection. For the process parameters problem, one considers that quadratic loss function with process adjustment cost. For the integrat...
Open Access
Research Article·pp. 455–463·Vol. 47, Issue 2Feb 2026
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 02 Feb 2026DOI: 10.47974/JIOS-1502 In this paper: We present the extended production problem with defective product and time value of money. The mean and production quantity are got based on the minimization of the expected cost.
Open Access
Research Article·pp. 533–538·Vol. 47, Issue 2Feb 2026
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 02 Feb 2026DOI: 10.47974/JIOS-1514 In this paper: This work discusses inventory model based on EMQ, process variance setting, quality investment and parameters of sampling inspection. It also considers a long-term quality improvement tool for decreas...
Open Access
Research Article·pp. 207–213·Vol. 47, Issue 1Jan 2026
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 01 Jan 2026DOI: 10.47974/JIOS-1513 In this paper: This work discusses inventory model based on EMQ, process mean setting, and parameters of inspection plan in the first step. Then the optimal quality investment for reducing process variance is determ...
Open Access
Research Article·pp. 2063–2070·Vol. 46, Issue 7Oct 2025
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 01 Oct 2025DOI: 10.47974/JIOS-1391 In this paper: In this study, we present the integrated design of process parameters and tolerance. For the process parameters setting, one considers the product with quality loss cost and process adjustment cost wh...
Open Access
Research Article·pp. 89–93·Vol. 28, Issue 1Jan 2025
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 15 Jan 2025DOI: 10.47974/JSMS-1209 In this paper: In this research, we consider the process parameters setting by addressing Taguchi’s cost for product and process adjustment with time value of money. The process parameters with the constant standard...
Open Access
Research Article·pp. 107–113·Vol. 28, Issue 1Jan 2025
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 15 Jan 2025DOI: 10.47974/JSMS-1235 In this paper: In this article, we propose the process parameters settings in the first phase. Then the extended problem with production quantity, quality investment, and parameters of acceptance sampling in the sec...
Open Access
Research Article·pp. 133–138·Vol. 28, Issue 1Jan 2025
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 15 Jan 2025DOI: 10.47974/JSMS-1289 In this paper: This work discusses the inventory model under EMQ, quality investment, parameters of acceptance sampling, PCI and AOQL.
Open Access
Research Article·pp. 1683–1689·Vol. 27, Issue 8Nov 2024
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 18 Dec 2024DOI: 10.47974/JSMS-1240 In this paper: This work discusses inventory model based on EMQ, process variance, and parameters of inspection plan in the first step. Then the optimal quality investment for reducing process variance is determined...
Open Access
Research Article·pp. 1343–1356·Vol. 27, Issue 7Oct 2024
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 30 Nov 2024DOI: 10.47974/JSMS-1193 In this paper: This study considers the modified Shin et. al.’s [14] model with process control and tolerance. In the first phase, the process parameters setting model considers Taguchi’s quadratic quality loss and...
Open Access
Research Article·pp. 635–643·Vol. 27, Issue 3Mar 2024
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 30 Mar 2024DOI: 10.47974/JSMS-1033 In this paper: In this study, we present the joint design for process mean, standard deviation, and tolerance. In the first phase, Taguchi’s quality loss and process adjustment cost are used. In the second phase, th...
Open Access
Research Article·pp. 673–680·Vol. 27, Issue 3Mar 2024
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 30 Mar 2024DOI: 10.47974/JSMS-1219 In this paper: In this article, we propose the modified economic production problem by considering acceptance inspection for obtaining production quantity, mean, and quality investment. One considers unknown mean an...
Open Access
Research Article·pp. 199–204·Vol. 45, Issue 1Jan 2024
Chung-Ho Chen, Tzu-Hsien Lee
Published Online: 29 Jan 2024DOI: 10.47974/JIOS-1503 In this paper: Chung and Hou develop an imperfect manufacturing process for obtaining the production run. In this research, we consider the extended problem under time value of money for determining the production r...