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All Journal JIPF (Jurnal Ilmu Pendidikan Fisika) Golden Ratio of Mapping Idea and Literature Format Advance Sustainable Science, Engineering and Technology (ASSET)
Jaya, Pratama
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Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Industrial & Manufacturing Engineering Library & Information Science Physics Social Sciences

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Hawking Temperature Modification and the Physical Dynamics of Black Holes: A Study of the Influence of Internal and Cosmological Variables Sahroni, Taufik Roni; Sinaga, Goldberd Harmuda Duva; Jaya, Pratama; Purwanto, Romdhon; Muhlis, Dasep; Siagian, Ruben Cornelius
JIPF (Jurnal Ilmu Pendidikan Fisika) Vol 9, No 2 (2024): May 2024
Publisher : STKIP Singkawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26737/jipf.v9i2.4647

Abstract

The main objective of the study is to develop a model that modifies the traditional Hawking temperature by considering the influence of internal variables such as radius, mass, electric charge, angular momentum, and cosmological constant. The research method involves mathematical analysis and computational modeling based on the modified Hawking temperature equation. The results show that the modified Hawking temperature produces non-linear corrections that show the interaction between black holes and the quantum structure of spacetime. graphical representations visualize the variation of Hawking temperature with changes in area, electric charge, angular momentum, and cosmological parameters. The implications of the research extend to the understanding of the thermal properties of black holes in the context of gravitational and quantum theories. The research identifies gaps in the knowledge of the effects of cosmological parameters on black hole thermodynamics and introduces Hawking temperature modifications that have not been mapped in detail before. The study concludes that the Hawking temperature modification provides a strong foundation for further research in black hole physics, particularly in the effect of physical and cosmological parameters on the thermal properties of black holes.
Enhancing Energy Efficiency in Industrial Warehouses Using Life Cycle Cost Analysis (LCCA) Jaya, Pratama; Roni Sahroni, Taufik
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/6pd8qm77

Abstract

Industrial warehouses use inefficient lighting systems that occupy a significant portion of energy consumption and operating expenses. The aim of this study is to attain higher energy efficiency and reduce the lighting cost by replacing conventional high-pressure mercury vapor (HPL-N) lamps with LEDs in a warehouse environment. The study employs the Life Cycle Cost Analysis (LCCA) methodology to evaluate long-term cost-effectiveness and save energy. Data were collected using literature review, field surveys, and light simulation using Dialux software at PT XYZ warehouse in Cilegon, Indonesia, between January and June 2024. Findings reveal that the use of LED lighting, in conjunction with the optimization of the light point number, reduces energy consumption by 65%, saving 121,929.816 kWh of energy annually. Within 11 years, installation of LED saves an amount of Rp 947,683,204 compared to Rp 1,796,422,585 with HPL-N systems—an amount of 50.66% or Rp 848,739,381 saved. The results show the energy and economic benefits of the use of LED in industrial warehouses to be advantageous for national energy saving as well as satisfying light standards.
Reducing Packaging Defects in Wheat Flour Production Using Soft Systems Methodology Maryani, Edna; Jaya, Pratama
Golden Ratio of Mapping Idea and Literature Format Vol. 6 No. 2 (2026): February - April
Publisher : Manunggal Halim Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52970/grmilf.v6i2.1990

Abstract

Product packaging quality plays a crucial role in maintaining product safety, reducing rework, and sustaining company competitiveness. This study aims to reduce defects in 25 kg wheat flour packaging at PT. XYZ by identifying dominant defect types and analyzing their root causes. A Soft Systems Methodology (SSM) approach—an interpretive, systems-based framework used to analyze complex, unstructured problem situations—was applied to structure the problem, develop conceptual models, and propose improvements. Based on production data, 653 packaging defects were recorded. The dominant defects were packaging leakage at the seams (51.60%) and damage during loading (36.29%), representing 87.89% of total defects. Root cause analysis using Pareto and fishbone diagrams identified human factors, improper methods, and material quality as the primary contributors. Improvement proposals include selecting higher-quality thread, optimizing operator working schedules, providing ergonomic support tools, establishing loading limits, and strengthening SOP implementation. The implementation of these improvements is expected to reduce rework levels, improve productivity, and enhance packaging reliability.
Co-Authors Goldbert Harmuda Duva Sinaga Maryani, Edna Muhlis, Dasep Purwanto, Romdhon Roni Sahroni, Taufik Sahroni, Taufik Roni Siagian, Ruben Cornelius