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All Journal Rekayasa Mesin Jurnal Manajemen Agribisnis dan Agroindustri
Nugroho, Wendy Triadji
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Decision Sciences, Operations Research & Management Mechanical Engineering

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Influence of Profile, Education Level, and Business Scale on Productivity of Business Actors in the Coconut Sugar Production Process in Lojejer Village, Wuluhan District Wijayanti, Fifin; Rujito, Hari; Nugroho, Wendy Triadji
Jurnal Manajemen Agribisnis dan Agroindustri Vol. 4 No. 1 (2024): June
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jmaa.v4i1.85

Abstract

This study reveals the effect profile business, educational level and scale of the productivity of coconut sugar farm businesses is to analyze the factors affecting the production process on the productivity of coconut sugar farm businesses. In this study reveals the influence of the factors profiles of business, education, and business scale either jointly or partially, and include also the dominant factors that influence the productivity of coconut sugar farm businesses, particularly businesses coconut sugar Lojejer village, Wuluhan district. The analytical tools used in this research is the analysis of multiple linear regression. Overall the results of this study it can be concluded that the factors profiles of business, education level, and scale simultaneously affect the productivity of coconut sugar farm businesses. Partially, profile entrepreneurs, business scale, while the level of education have a significant effect on productivity is insignificant coconut sugar farm businesses. For the dominant factors affecting the productivity of farm businesses palms sugar is the profile of entrepreneurs.
DIMENSIONAL ACCURACY OF 3D PRINTED DOG BONE STRUCTURES Nugroho, Wendy Triadji; Tyagita, Dicky Adi; Wahyudiono, Arif; Suranto, Dwi Djoko
Jurnal Rekayasa Mesin Vol. 16 No. 2 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

The current study provides a comprehensive discussion regarding statistical analysis of dimensional accuracy comprising thickness, gauge section width, circularity and cylindricity for 3D printed polylactic acid (PLA) specimens according to the dimensional specifications of ASTM D638 standard type IV, which are optimally built via fused deposition modelling (FDM). This work focuses on investigating the primary influences of 3D printing parameters as input factors consisting of nozzle temperature, infill density as well as layer height on dimensional deviation of the printed specimens. The confirmation tests are implemented in this study to ensure the experimental work's reproducibility. The resulting data shows that layer height dominates the effects, namely 80, 88, 81 and 81% on thickness, gauge section width, circularity and cylindricity. Meanwhile, nozzle temperature gives the second considerable influence on dimensional deviation of printed specimens, around 16, 9, 16 and 17%. Conversely, infill density promotes a negligible effect on the dimensional error of such specimens. Furthermore, the confirmation tests indicate that the experimental works are highly reproducible. These findings can contribute significantly to the additive manufacturing technology for PLA material, especially when the printed specimens are used for specific applications in biomedical, engineering and aerospace fields.
Co-Authors Arif Wahyudiono Dicky Adi Tyagita Hari Rujito Suranto, Dwi Djoko Wijayanti, Fifin