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All Journal Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil BANGUN REKAPRIMA PERFORMA : Media Ilmiah Teknik Industri Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS)
Sukoyo Sukoyo
Fakultas Teknologi Industri, KK Sistem Manufaktur, Institut Teknologi Bandung
Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Industrial & Manufacturing Engineering Social Sciences Transportation Other

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Multi-Task Simultaneous Supervision: Dual Resource-Constrained Scheduling Problem in Identical Parallel Machines Considering Differences in Operator Skill Levels Rizka, Afifah; Sukoyo, Sukoyo; Akbar, Muhammad
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 26 No. 2 (2024): December 2024
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jti.26.2.119-130

Abstract

This paper focuses on developing a Multi-Task Simultaneous Supervision Dual Resource-Constrained Scheduling (MTSSDRC) system that considers differences in skill between operators, aiming to minimize makespan and balance operator workload. Workload balance is calculated using the Workload Smoothness Index (WSI). The mathematical model developed uses three techniques: Mixed-Integer Linear Programming (MILP), Mixed-Integer Quadratic Programming (MIQP), and Mixed-Integer Quadratically Constrained Programming (MIQCP). These techniques can handle scheduling cases on a small to medium scale. Results from MILP focus on minimizing makespan, with an additional constraint for calculating the WSI. MIQP focuses on workload balance so that the WSI value becomes an objective function. It also adds a constraint for the allowable makespan value. The result from MIQP shows that the WSI value is lower than in MILP, and the makespan values are equal to the MILP makespan value. Next, MIQCP aims to minimize makespan with a constraint for the allowable WSI value. The MIQCP model produces a makespan value adjusted to a WSI value close to zero. Finally, further analysis is presented regarding the influence of differences in operator skills based on the results of the three models. Based on these models, operators with better skills will be assigned more frequently than others.
Penentuan Rute Distribusi Produk AMDK Menggunakan Pengembangan Algoritma Clarke and Wright Savings di PT SMN Yusuf, Nur Muhammad; Sukoyo, Sukoyo
Performa: Media Ilmiah Teknik Industri Vol 22, No 1 (2023): Performa: Media Ilmiah Teknik Industri
Publisher : Industrial Engineering, Faculty of Engineering, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/performa.22.1.75358

Abstract

PT SMN merupakan salah satu perusahaan yang bergerak di bidang produksi, distribusi, dan pemasaran produk Air Minum dalam Kemasan (AMDK). Rute distribusi produk AMDK harus dioptimasi agar biaya distribusi lebih murah. Penelitian ini bertujuan untuk mengembangkan algoritma Clarke and Wright Savings yang digunakan untuk menyelesaikan permasalahan distribusi di PT SMN. Pengembangan algoritma dilakukan untuk mengakomodasi kendala waktu operasional distribusi dan mengubah cara pemilihan titik pelanggan ke dalam rute menggunakan konsep head dan tail. Penyelesaian permasalahan penentuan rute distribusi produk AMDK di PT SMN menghasilkan biaya yang lebih rendah dibandingkan kondisi eksisting dengan perbaikan biaya distribusi sebesar 27,56% yaitu Rp689.332/minggu. Hasil pengembangan algoritma juga menghasilkan biaya yang lebih rendah dibandingkan solusi algoritma acuan Clarke and Wright Savings dan Sequential Insertion.
Co-Authors Abdul Hakim Halim Abdul Hakim Halim Anastasya, Frida Anung Suwarno, Anung Bermawi P. Iskandar Bermawi P. Iskandar Fajar Surya Herlambang Hadi Wibowo Harprastanti, Primasiwi Isnubroto, Danang Junaidi Junaidi Karina Amanda Larasati Leily Fatmawati, Leily Muhammad Akbar Muhammad Mukhlisin Mulyono, Tedjo Nurhadi, Imam Pangesti, Rendy Dwi Praharseno, Fikri Prastyo, Danang Prawesti, Ratih Rifqi Aulia Abdillah, Rifqi Aulia Rizka, Afifah Roselina Rahmawati S.Pd. M Kes I Ketut Sudiana . Setyono, Karnawan Joko Stefanus Santosa SUDARMONO SUDARMONO Sulaiman, Sri Wahyuningsih Sulaiman, Sriwahyuningsih Sulistiawati, Baiq Heny Supriyadi Supriyadi TMA Ari Samadhi TMA Ari Samadhi Wahyono, Herry Ludiro Warsiti Warsiti Wasino Wasino Wicaksono, Teguh Mulyo Wildana Latif Mahmudi, Wildana Latif Yusetyowati Yusetyowati, Yusetyowati Yusuf, Nur Muhammad