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All Journal Jurnal Teknik Industri Teknika: Jurnal Sains dan Teknologi Journal Industrial Servicess Jurnal Teknik Industri Untirta Jurnal Ilmiah Teknik Industri Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Communications in Science and Technology Logistic and Operation Management Research Journal of Systems Engineering and Management
Muhammad Adha Ilhami
Universitas Sultan Ageng Tirtayasa
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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Bibliometric analysis of lean and green healthcare integration using Publish or Perish (PoP) Febianti, Evi; Ilhami, M. Adha; Ekawati, Ratna; Setiawan, Hadi
Journal Industrial Servicess Vol 10, No 1 (2024): April 2024
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jiss.v10i1.24476

Abstract

Lean Healthcare is an approach to management systems that can change the mindset of hospitals, making healthcare more organized by reducing waste. Waste can be defined as any activity that does not add value to a process. The study recommends a bibliometric analysis of this problem. This is necessary to identify research trends or gaps that still exist. Data searches use Publish or Perish software, while data analysis uses VOSviewer software. The search results and data analysis suggest that trends for Lean Healthcare problems will likely be resolved by integration with green practices. The final process can be carried out considering environmental sustainability factors.
Application of the Nawaz-Enscore-Ham (NEH) algorithm for flow shop scheduling in a timber factory Muharni, Yusraini; Saeful Muttaqien, Ade Irman; Lazuardi, Hilal; Herlina, Lely; Febianti, Evi; Ilhami, Muhammad Adha; Ulfah, Maria; Hartono, Hartono
Journal Industrial Servicess Vol 10, No 1 (2024): April 2024
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jiss.v10i1.24503

Abstract

Scheduling is essential in production systems as it manages resource allocation and ensures precise and timely operations. A timber firm produces wooden hammocks and pallets to meet the demand for wooden pallets in the domestic market using a flow shop type production flow and the First Come First Served (FCFS) method. In December 2022, there was excess capacity due to a decrease in demand. Conversely, the company experienced a shortage of capacity in January due to a significant increase in demand for pallets from several companies. This situation resulted in idle time when switching to the next task, indicating that production capability was not being utilized to its full potential. The aim of this research is to provide production scheduling proposals to minimize makespan by applying the Nawaz-Enscore-Ham (NEH) method and the Integer Linear Programming (ILP) method. The proposed production scheduling with a lower makespan has been successfully obtained in this study.
Mathematical model for university online exam scheduling considering lecturer preferences Febianti, Evi; Ilhami, Muhammad Adha; Hidayat, Arif
Journal Industrial Servicess Vol 10, No 2 (2024): October 2024
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jiss.v10i2.28571

Abstract

Zoom accounts are used as an alternative for online teaching and learning activities during the pandemic. The Industrial Engineering Study Program at Sultan Ageng Tirtayasa has been scheduling online exams and determining the number of Zoom accounts needed manually, which has resulted in an insufficient number of Zoom accounts to meet all course schedules. Proper online exam scheduling can optimize the number of Zoom accounts required. This study aims to determine the number of Zoom accounts needed for online exams by developing a mathematical model. The model developed is an Integer Linear Programming (ILP) model, with the objective of minimizing the number of Zoom accounts required. The problem is solved using an optimization approach with deterministic parameters. The model provides recommendations for decision-making in the implementation of online exams, including determining the exam timetable and the number of Zoom accounts to be rented. The computational results show that the developed model provides an optimal solution, requiring only three Zoom accounts.
The Effect of Epoxy Resin on the Compressive Strength of Short Laminated Bamboo Columns Darwis, Zulmahdi; Basuki, Achmad; Bhayusukma, Muhammad Yani; Kristiawan, S A; Abdurahman, Javil Egi Pratama; Ilhami, Muhammad Adha
Logistic and Operation Management Research (LOMR) Vol. 4 No. 1 (2025): Logistic and Operation Management Research (LOMR)
Publisher : Research Synergy Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31098/lomr.v4i1.3179

Abstract

The ongoing depletion of global timber resources has increasingly directed attention toward bamboo as a viable and sustainable structural alternative. This study investigated the influence of epoxy resin coatings on the compressive performance of short laminated bamboo columns. Three treatment conditions were evaluated: untreated (control), epoxy resin-coated, and externally reinforced with steel plates. The test specimens, manufactured using Dendrocalamus asper, were subjected to axial compression by SNI 03-3959:1995. Before testing, the physical and mechanical properties of both bamboo and steel reinforcement materials were characterized. Experimental results indicated that epoxy coating enhanced the average compressive strength by 2.54%, whereas steel plate reinforcement yielded a more substantial increase of 9.94% relative to the control group. One-way ANOVA analysis confirmed that only the steel-reinforced group demonstrated a statistically significant improvement in compressive capacity (p < 0.05). The observed failure modes revealed that the untreated and epoxy-coated specimens were prone to surface cracking and adhesive delamination, whereas the steel-reinforced columns exhibited a more localized damage with reduced deformation. It was concluded that although epoxy resin provided a modest enhancement, applying steel reinforcement significantly improved the axial load-bearing capacity of laminated bamboo columns. These findings underscore the structural potential of hybrid bamboo composites for sustainable construction applications.
Modeling Fresh Product Delivery Routes with Heterogeneous Vehicle Routing Problem with Time Windows and Multi-Trips Model: : A Case Study Asbowo, Heri; Sirajuddin, Sirajuddin; Ilhami, Muhammad Adha
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 27 No. 2 (2025): December 2025 (In Progress)
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study develops a Heterogeneous Vehicle Routing Problem with Time Windows and Multi-Trips (HVRPTWMT) model designed to minimize delivery distances for fresh products. The model addresses complex operational constraints inherent in real-world logistics, including time windows, heterogeneous fleets, and multi-trip requirements. A quantitative approach was employed to formulate the HVRPTWMT model, which was then solved using an analytical method to ensure a global optimum solution was found. The model's efficacy was demonstrated through its application to historical data from April 10, 2025, yielding an optimal total distance of 774.45 km across six efficient routes. Sensitivity analysis confirmed the model's robustness and responsiveness to critical parameter changes, such as vehicle capacity, demand fluctuations, and time limits. The developed HVRPTWMT model provides a globally optimal and rule-compliant solution for complex fresh product delivery logistics.
Co-Authors Abdurahman, Javil Egi Pratama Achmad Basuki Ade Irman Ade Irman S. Mutaqin Ade Irman Saeful Mutaqin Ade Sri Mariawati Adrian Rizki Pratama Anggraeni, Shanti Kirana Anting Wulandari Arina, Faula Asbowo, Heri Asep Ridwan Ayunda Prasetyaningtyas Bobby Kurniawan Darwis, Zulmahdi Dian Friana Hidayat Dina Octanatry Dwi Desta Riyani Esa Surya Cintami Eva Marella Sihite Evi Febianti Evi Febianti Evi Febianti Evi Febianti Evi Febianti Fara Dewi Anggraini Fauzan Isnan Rosep Febianti, Evi Febianti, Evi Fellek Getu Tadesse Fitri Trapsilawati Friskayani, I Gusti Ayu Gilang Ferdiansah Herlina, Lely Hidayat, Arif Horas Naek.S.M.S Ibnu Sina Syahdani Intan Emeralda Irfan Hadi Permana Irfan Hadi Permana Irfan Muhammad Jayawarsa, A.A. Ketut K Kulsum Kiki Dwi Safitri Kulsum Kulsum kulsum kulsum Lazuardi, Hilal Lely Herlina Lely Herlina Masrurah, Nur Aini Melwita Delfi Anggraeni Mochamad Saefullah Muhammad Yani Bhayusukma, Muhammad Yani Muharni, Yusraini Niken Empina Putri Nur Andriyani Nuraida Wahyuni Nurfitriana Sandini Ratna Ekawati Rosalina Sari S A Kristiawan Saeful Muttaqien, Ade Irman Setiawan, Hadi Shanti Kirana Anggraeni Sirajuddin Sirajuddin Subagyo Tb. Muhamad Arif Aliudin ulfah, Maria Ulfah, Maria Ummi, Nurul Vickri Fiesta Daelima Wibowo, Budhi Yulinda Uswatun Kasanah Yusraini Muharni