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All Journal Jurnal Teknik Industri Journal of Governance, Taxation, and Auditing
Jamaluddin, J
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Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Industrial & Manufacturing Engineering

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Model Matematika Optimasi untuk Perbaikan Proses Penggorengan Vakum Terhadap Tekstur Keripik Buah Jamaluddin, J; Rahardjo, Budi; Hastuti, Pudji; Rochmadi, R
Jurnal Teknik Industri Vol 12, No 1 (2011): Februari
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.315 KB) | DOI: 10.22219/JTIUMM.Vol12.No1.82-89

Abstract

Hard and crunchy are specific characteristics of fried product prefered by consumer. To have texture of crunchy product being suitable with consumer taste, it is necessary to observ characteristic change of raw material and frying condition. In frying process, the changes of hardness and crunchiness characteristics of food occur. These changes are predicted caused by free water vaporization and the decrease of starch content in food. The objective of this research is to develop mathematical model of hardness and crunchiness changes as the function of water and extract content degradation. Sample of the research is jack fruit fried in the temperature of 70–100° C, duration of 15–60 minutes, and pressure of 80–90 kPa. The parameters observed are hardness and crunchiness, water and starch content before and after frying. The result showed that hardness and crunciness change as the function of water vaporization and the decrease of starch content can be used to predict hardness and crunciness of product during vacuum frying.
Acceptance Analysis of the Core Tax Using the UTAUT Model: A Study on Individual Taxpayers in Palu City RIDWAN, Muhammad; MASRUDDIN, M; JAMALUDDIN, J; ZAHRA, Femilia; ERWINSYAH, E
Journal of Governance, Taxation and Auditing Vol. 4 No. 1 (2025): Journal of Governance, Taxation and Auditing (July - September 2025)
Publisher : PT Keberlanjutan Strategis Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38142/jogta.v4i1.1516

Abstract

This study aims to analyze the level of acceptance of the Coretax information system from the perspective of individual taxpayers in Palu City. Using the Unified Theory of Acceptance and Use of Technology (UTAUT) model with a final sample of 105 respondents. Data collection was conducted using a questionnaire method, and the results were processed using SPSS version 26 for statistical data analysis. The results of this study indicate that performance expectations and social interactions significantly influence interest in using Core Tax, while effort expectations and facilitating conditions do not significantly influence interest in using Core Tax. The results of this study reinforce the importance of continuously improving the development of tax information systems in Indonesia so that the system can facilitate taxpayers, especially individuals, in fulfilling their tax obligations. As a suggestion for further research, the influence of other variables, such as user habits and hedonic motivations, on the intention to use Coretax can be further studied to complexify the findings of the research on Coretax use.
Co-Authors Budi Rahardjo ERWINSYAH, E Femilia Zahra MASRUDDIN, M Muhammad Ridwan Pudji Hastuti Rochmadi, R