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The production-inventory model with imperfect, rework, and scrap items under stochastic demand Dana Marsetiya Utama; Artha Bripka Putri
International Journal of Advances in Applied Sciences Vol 13, No 4: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i4.pp900-910

Abstract

Inventory is crucial in maintaining a smooth production process and meeting consumer demand for manufacturing companies. This research focuses on production problems involving defects, rework, and scrap items in stochastic demand. This research aims to develop a production-availability model by minimizing the expectation of total cost (ETC). The model includes four main decision variables, namely production quantity (Q), safety factor (k), production rate (P), and rework rate (P1). This research uses the Aquila optimizer algorithm to optimize the objective function. It compares with the heuristic procedure and Harris Hawk optimization algorithm. The results showed that the Aquila optimizer algorithm successfully optimized the production-availability problem. A comparison between algorithms indicates that the Aquila optimizer algorithm performs equivalently to the Harris Hawk optimization algorithm and outperforms the heuristic procedure. Sensitivity analysis shows that increasing demand uncertainty increases ETC and k. At the same time, it can decrease Q.
Selecting Green Suppliers Using a Hybrid Fuzzy BWM and IVIF-MABAC Approach in the Tropical Fruit Sector Dana Marsetiya Utama; Krisna Hayu Dirgantara
Jurnal Manajemen Industri dan Logistik Vol. 10 No. 1 (2026): 10 original research articles, were authored/co-authored by 38 authors from 3
Publisher : Politeknik APP Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30988/jmil.v10i1.1718

Abstract

Agribusiness companies face challenges in green supplier selection due to subjective judgments and information gaps. To address these linguistic ambiguity and subjective uncertainties, this study develops a hybrid MCDM framework integrating the α-cut based Fuzzy BWM and Interval-Valued Intuitionistic Fuzzy MABAC (IVIF-MABAC). F-BWM α-cut derives stable weights from linguistic preferences, and IVIF-MABAC provides robust ranking by handling hesitancy. This approach, novel for the Indonesian tropical fruit sector, involved three experts (academic, manager, consultant) via questionnaires and FGDs. Results show Product Quality and Transparency & Traceability are critical. The 4th Green Supplier consistently achieved the highest ranking. The framework offers managers a reliable tool, enhancing sustainability and competitiveness within tropical fruit supply chains.
A modified one-to-one algorithm for optimizing sustainable lot sizing multi-item models Dana Marsetiya Utama; Yuan Rafika; Shanty Kusuma Dewi
Bulletin of Electrical Engineering and Informatics Vol 15, No 2: April 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v15i2.9844

Abstract

Multi-item inventory management in modern production environments faces major challenges related to stochastic demand, transportation costs, and carbon emissions. This study aims to develop a sustainable lot sizing model that integrates economic and environmental aspects, and proposes the one-to-one based optimization (OOBO) algorithm as a problem-solving approach. The methodology used includes non-linear programming (NLP) formulation that considers stochastic demand, ordering and storage costs, carbon emissions, energy consumption, and vehicle capacity constraints. The model is then optimized using OOBO and compared with the Aquila, particle swarm optimization (PSO), and genetic algorithm (GA) algorithms in three case scale scenarios (6, 30, and 50 items). The experimental results show that OOBO consistently outperforms the comparison algorithms, with cost savings of up to 40.9% in the 50-item case. OOBO also demonstrated high exploration resilience without premature convergence and competitive computational time efficiency. These findings confirm that OOBO is effective in simultaneously optimizing total costs and carbon emissions, making it an adaptive solution for sustainable supply chain management. The theoretical implications include the expansion of OOBO's application to multidimensional stochastic systems, while in practical terms, this model supports decision-makers in formulating environmentally friendly and efficient inventory policies.
Analisis Model Sustainable Economic Order Quantity Dengan Mempertimbangkan Emisi Karbon Dan Batasan Kapasitas Gudang Untuk Menekan Total Biaya Persediaan Dian Setiya Widodo; Dana Marsetiya Utama
TEKNIK Vol 40, No 3 (2019)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.927 KB) | DOI: 10.14710/teknik.v40i3.24508

Abstract

Model Economic Order Quantity (EOQ) merupakan salah satu model persediaan dasar dalam rantai pasok. Model EOQ menawarkan pendekatan matematis untuk menentukan jumlah optimal produk yang harus dipesan oleh perusahaan ke supplier. Penelitian ini menganalisa model sutainable EOQ dengan mempertimbangkan emisi karbon dan batasan kapasitas gudang untuk meminimalkan total biaya persediaan. Percobaan numerik dan analisa sensitivitas dilakukan terhadap model EOQ usulan menggunakan metode lagrange. Terdapat dua model yang diusulkan untuk menyelesaikan permasalahan. Model pertama adalah model EOQ dengan mempertimbangkan karbon emisi dan model kedua adalah model EOQ dengan mempertimbangkan karbon emisi  dan batasan gudang. Hasil penelitian menunjukkan bahwa model sustainable EOQ dengan mempertimbangkan emisi karbon dan batasan kapasitas gudang adalah efektif untuk menyelesaikan permasalahan penentuan jumlah optimal yang harus dipesan oleh perusahaan sehingga menekan total biaya persediaan
Co-Authors Abiddin, Moh Zainal Ahfa, Hikam Antasyard Ahmad Rusdiansyah Ahmed Nedal Abid Al Kareem Jabari Alba, Nidaul Anindya Apritha Putri Annisa Kesy Garside Artha Bripka Putri Asrofi, Mochammad Samsul Ayu An Putri Salima Azis Fredy Mulya Bahru Widjonarko Bahtiar, Ardi Agustia Baiq Nurul Izzah Farida Bayu Nur Hidayat Bianca Maharani Boer, Meidina Kalse Cantika Febrita Cynthia Novel Al-Imron D Farista Dewi Maharani Diami, Berlinda Amalia Dian Setiya Widodo Dian Setiya Widodo Dimas Caesario Pradikta Djirimu, Hanum Salsabila Dwi Asmara Putri, Yolanda Dwi Pramudia Wardani Farida Nur Kumala Fathiha Raudhatul Jannah Febrianto Susastro Febrianto Susastro, Febrianto FERRY YULIANTO FERRY YULIANTO, FERRY Firdaus, Muhammad Hafid, Ibnu Halifah, Syukron Taufiqurrohman Harto, Setyo Heri Mujayin Kholik Heri Santoso Hikam Antasyard Ahfa Husen, Moh. Ikhlasul Amallynda Ikhlasul Amallynda Ilyas Masudin Ilyas Mas’udin Imam Santoso Inggit Sekar Ningrum Kholifa, Bunga Milenia Nur Krisna Hayu Dirgantara Leilani Salsabilah, Aisyah Leo Rizki Ardiansyah Lubis, Imtiaz Habib M. Faisal Ibrahim M.M Putri Mardhiyyah, Yunita Siti Mas’udin, Ilyas Maulana, Abel Alqurni Maulana, Sri Kurnia Dwi Budi Meidina Kalse Boer Meiliza Dresanala Mochammad Samsul Asrofi Moh Zainal Abiddin Moh. Husen Muhammad Aghniya Baihaqi Muhammad Faisal Ibrahim Muhammad Faisal Ibrahim Muhammad Faisal Ibrahim, Muhammad Faisal Muhammad Firdaus Nabilah Sanafa Nadya Safa Regina Putri Nafis, Dzakia Nasution, Riven Nidaul Alba Ningrum, Inggit Sekar Nur Fitriana Pradikta, Dimas Caesario Primayesti, Meri Dines Rahmat Wisnu Wardana Ramadhani, Taufik Akbar Randle, Oluwarotimi Ricca Andhini Octaria Rista Anggriani Riven Nasution Rizal Dian Azmi Safitri, Wa Ode Nadhilah Salsabila, Nadhea Aurelie Salsabilah, Aisyah Leilani Sanafa, Nabilah Selvia Rubiyanti Setyo Harto Shanty Kusuma Dewi Shanty Kusuma Dewi Sri Kurnia Dwi Budi Maulana Syukron Taufiqurrohman Halifah Teguh Baroto Thoriq Akbar Zein Tyas Yuli Rosiani Ulfa Fitriani Ulfa Fitriani Umamy, Sabila Zahra Veronika Indah Mawarti Veronika Indah Mawarti, Veronika Indah Vritta Amroini Wahyudi Wahyu Wicaksono Wardani, Dwi Pramudia Warkoyo Widodo, Dian Setiya Wike A. P. Dania Yasa, Arnelia Dwi Yolanda Mega Risma Yuan Rafika Yusuf Hendrawan Zein, Thoriq Akbar