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All Journal Jurnal Ilmiah Manajemen Kesatuan Jurnal Indovisi
Mohamad Jihan Shofa
Universitas Serang Raya, Indonesia
Economics, Econometrics & Finance Social Sciences

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Operational strategy for enhancing automotive parts manufacturing quality and productivity through cycle time optimization Agustinus Hariadi Djoko Purwanto; Rosalendro Eddy Nugroho; Mohamad Jihan Shofa; Wahyu Oktri Widyarto; Rahman DS
Jurnal Indovisi Vol. 8 No. 1 (2026): Jurnal Indovisi
Publisher : Indonesian Indovisi Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32698/19075608

Abstract

Developing effective operational strategies is essential for automotive parts manufacturers to improve quality and productivity while meeting market demand with limited resources. This study empirically validates an integrated operational strategy in which Cycle Time Reduction serves as a primary capability for improving downstream manufacturing performance. A quantitative explanatory approach was employed using Partial Least Squares Structural Equation Modeling (PLS-SEM) based on data from 100 respondents in an automotive parts manufacturing company. The model examined relationships among Cycle Time Reduction, Machining Operational Performance, Burritori Operational Performance, Assembly Operational Performance, Final Inspection Performance, and Overall Manufacturing Productivity. Results show that Cycle Time Reduction significantly improves machining (β = 0.510) and burritori performance (β = 0.388). Machining (β = 0.295) and burritori performance (β = 0.392) positively influence assembly performance, which strongly affects final inspection (β = 0.586) and overall manufacturing productivity (β = 0.598). The model explains 26.0%, 15.0%, 37.2%, 34.4%, and 35.8% of variance in these outcomes, respectively. The findings confirm that Cycle Time Reduction functions as an integrated operational strategy, enabling cascading improvements across the manufacturing value chain and supporting lean manufacturing practices.
Community Awareness and Risk Communication Gaps on Chronic Health Hazards from Hazardous Waste Use in Cement Plants Agustinus Hariadi Djoko Purwanto; Rosalendro Eddy Nugroho; Sri Hartono; Mohamad Jihan Shofa; Wahyu Oktri Widyarto
Jurnal Ilmiah Manajemen Kesatuan Vol. 14 No. 5 (2026): JIMKES Edisi September 2026
Publisher : LPPM Institut Bisnis dan Informatika Kesatuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37641/jimkes.v14i5.5603

Abstract

Hazardous and Toxic Waste (HTW) utilization in cement plants poses public health risks from dioxin-furan and heavy metal emissions, while limited public awareness may hinder preparedness. This study aims to assess community awareness, evaluate existing risk communication practices, and identify strategies for mitigating health disasters associated with HTW utilization in cement plants. This mixed-method study combined a survey of 97 residents with in-depth interviews with four experts across three Indonesian cement plants that use HTW. Residents knew the sources of pollution and perceived the plants as a large threat. However, many wanted more information about the potency of these threats and were unfamiliar with chronic carcinogenic risks. While all three plants had emergency response procedures, none had formal health disaster communication strategies. Experts supported adapting the Ministry of Health’s “Extraordinary Health Event” framework for chronic industrial health risks and proposed using existing community engagement and social media channels. Effective risk communication should integrate existing emergency frameworks, prioritize inter-agency coordination, and apply phased, verified disclosure to avoid social panic. Embedding chronic health disaster communication into regulatory and public health systems may improve preparedness and response.
Co-Authors Agustinus Hariadi Djoko Purwanto Rahman DS Rosalendro Eddy Nugroho Sri Hartono Wahyu Oktri Widyarto Wahyu Oktri Widyarto