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A Two-Machine Flow Shop Batch Scheduling Model to Minimize Total Actual Flow Time Yusriski, Rinto; Nasution, Andri Rachmat Kumalasian; Lukas, Lukas; Wijayanti, Linda; Octaviani, Sandra
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 25 No. 2 (2023): December 2023
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/jti.25.2.179-194

Abstract

This study introduces a scheduling model for a two-machine flow shop batch system to minimize the actual flow time. In this system, two machines are responsible for processing raw materials and producing finished products, with a single bottleneck machine. The entity overseeing the manufacturing process organizes demand units into batches, ensures the accurate and timely arrival of raw materials, and delivers all finished products punctually to meet an expected due date. The study addresses crucial challenges, including determining the optimal number of batches, sizes, and sequences to achieve the specified objective. The analysis adopted an algorithm grounded in the Lagrange relaxation method to tackle these challenges. Moreover, the algorithm is operated by identifying the bottleneck machine as a scheduling reference and determining the appropriate number of batches and sizes. The analysis showed the efficacy of the developed algorithm by using Johnson's rule for making batch sequence decisions through numerical experiments conducted across 1000 cases. The results showed a 1.44% to 4.43% improvement in efficiency compared to previous research, accompanied by a 2–8 times reduction in computational time.
Applications of Educational Technology in Solving Learning Problems Furtasan Ali Yusuf; Linda Wijayanti; L Lukas; Sandra Octaviani; Enny Widawati
Athena: Journal of Social, Culture and Society Vol. 1 No. 4 (2023): October 2023
Publisher : CV. Media Digital Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58905/athena.v1i4.201

Abstract

Educational technology in its contribution to the management and learning of education is opening up knowledge horizons about changing strategic environments. We need the growth of science and technology caused by learning and learning activities of innovation. Speaking in this case is inadequate because the concept of technological studies provides a formula for how to bring teaching and learning activities. Then, the application of educational technology, especially ICT (Information and Communication Technology) in education to overcome learning problems has a number of requirements. For example, the need for large investment costs and energy that are skilled in managing and developing education and utilizing technological advancements that will support the process of learning. It is noteworthy that education is a long-term investment. Therefore, investment in basic education facilities must be calculated with future educational outcomes
Co-Authors Abadi, Surya Abdul Azis Ahmad, Denis Akhmad Faishol Anang Kukuh Adisusilo Anthon de Fretes, Anthon de Fretes Anwar, Hadrian Bachri, Karel Octavianus Basuki, Widodo Widjaja Cahyaningrum, Winda Rahma Catherine Olivia Sereati Chandra Winata Gunardi Christanto, Henoch Juli Dhanti, Kurnia Ritma Dita Pratiwi Kusuma Wardani Duma Kristina Yanti Edhifa . Emmy Wahyuningtyas Enny Widawati Faishol, Akhmad Ferry Rippun Gideon Manalu, Ferry Rippun Gideon Furtasan Ali Yusuf Gideon Manalu, Ferry Rippun Ginting, Ignatius Hanifa, Noha Hari Prasetijo Harlianto Tanudjaja Hendry Wong Henry, Carolus Herlina Herlina Idris, Reuben Louis Indriati, Kumala Jakariya Joevierdi, Joevierdi Jones, Danzel Maxdriel Samuel Jong, Susanto Julius Bata Kartadinata, Budi Khairun Nisa Kumala Indriati Kumar, Saurav L Lukas Lilis Sholihah Listiyowati, Tanti Luhur Bayuaji, Luhur Lukas Lukas Lukas Mahyastuti, V. Winda Maria Angela Kartawidjaja Maria Angela Kartawidjaja Markus Tanubrata Melisa Mulyadi Melisa Mulyadi Melisa Mulyadi Muhammad Hidayat Muniroh, Nur An-Nuha Mylyadi, Melisa Nasution, Andri Rachmat Kumalasian Nova Eka Budiyanta Nugrahena, Nurmalita Putri Pebrianti, Dwi Pin Panji Yapinus, Pin Panji Putranti, Respatiningtyas Amadea Danfi Rani Anggrainy Rinto Yusriski Ronald Sukwadi Sachi, Haenuki Sandra Octaviani Sandra Octaviani Sandra Octaviani Sarinastiti, Deliza Dhiakhalda setiawan, Dibyo Sheila Tobing Siregar, Marsul Siti Gusti Ningrum Stefan Adriel Sudarsono, Tantri Analisawati Surya Abadi Sutanto, Daniel Denis Tajuddin Nur Tajuddin Nur Theresia Ghozali Toto Tohir Wahyudi Faris Wibawa Prasetya Wiliam Wiliam Wilona Angelina Azels Wilson Zenik, Andre