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All Journal Journal of Engineering and Management in Industrial System BAREKENG: Jurnal Ilmu Matematika dan Terapan Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal i tabaos
Afifudin, Mohammad Thezar
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Public Health Transportation

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Sosialisasi Penggunaan Software SimaPro Untuk Analisis Siklus Hidup dalam Konteks Keberlanjutan Lingkungan Indah, A. Besse Riyani; Bahri, Syamsul; Amar, Kifayah; Asmal, Sapta; Hanafi, Rosmalina; Rusman, Muhammad; Hadijah, A. Nurul Izzah; Sakti, Fajriani; Afifudin, Mohammad Thezar; Sahar, Dian Pratiwi
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 2 (2024): Kolaborasi yang Kuat untuk Kekuatan Kemasyarakatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i2.512

Abstract

This community service activity aims to enhance the understanding and skills of the Dinas Lingkungan Hidup (DLH) of Pangkep Regency in using SimaPro software for Life Cycle Assessment (LCA) within the context of environmental sustainability. Currently, DLH Pangkep faces challenges in conducting environmental impact assessments manually, which require significant human resources, time, and costs. Through the socialization and training of SimaPro usage, this activity aims to improve the efficiency and effectiveness of DLH in assessing the environmental impact of production systems. The implementation methods include needs assessment, activity planning, an opening session, practical training in using SimaPro, discussions and Q&A sessions, as well as evaluation and feedback. The expected outcomes include increased understanding and skills of participants in using SimaPro for LCA, along with scientific publications. This activity is expected to enhance the capacity of DLH Pangkep in conducting more comprehensive and efficient environmental impact assessments, thereby supporting DLH in making more sustainable decisions related to environmental policies in Pangkep Regency. Quantitative analysis of pre-test and post-test results shows a significant improvement in participants' understanding and skills, especially in using SimaPro, with a 191.7% increase. This indicates the success of the training in enhancing DLH Pangkep's competency in environmental impact assessment.
KONFIGURASI PERALATAN BONGKAR MUAT KONTEINER PADA PT. PELABUHAN INDONESIA (PERSERO) CABANG AMBON Yulianti, Nurma; Tukan, Marcus; Afifudin, Mohammad Thezar
i tabaos Vol 3 No 1 (2023)
Publisher : Fakultas Teknik Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/i-tabaos.2023.3.1.1-8

Abstract

Arus container yang masuk melalui TPS di Pelindo cabang Ambon cenderung mengalami fluktuatif, sehingga penentuan konfigurasi peralatan bongkar muat menjadi hal yang penting untuk mencegah terrjadinya over kapasitas terhadap peralatan. Penelitian ini bertujuan untuk menganalisis trend traffic container, ballance traffic, performance dan formasi/konfigurasi peralatan bongkar muat menggunakan metode balancing berdasarkan hasil analisa performansi pada tiap-tiap area handling menggunakan simulasi dinamis sederhana. Penelitian ini membahas peralatan bongkar muat diantaranya container crane, rubber tyred gantry, reach stacker, forklift dan trailer truck serta tidak mencakup kapasitas lahan dan TKBM. Traffic container yang dianalisis adalah container regular import dan diramalkan menggunakan 3 metode peramalan. Berdasarkan hasil peramalan trend traffic container diperkirakan jumlah container yang masuk-keluar pada tahun 2023 sebesar 104.818 hingga tahun 2024. Sehingga traffic container dinilai belum seimbang, yang mana persentase jumlah container yang dimuat jauh lebih kecil dibanding jumlah container yang dibongkar dengan perbandingan 86,2:13,8. Selain itu container yang masuk/keluar di dermaga juga belum seimbang dibanding container yang masuk/keluar di container yard. Sehingga kapasitas peralatan yang tersedia jauh lebih besar dibanding kapasitas terpakai sehingga mengakibatkan terjadinya over kapasitas peralatan. Dengan demikian konfigurasi ideal yang direkomendasikan adalah 2-2-1-1-3.
OPTIMISASI BIAYA PRODUKSI DAN PENDAPATAN DENGAN MENGGUNAKAN METODE GOAL PROGRAMMING PADA ISTANA ROTI DAN ES HILYAH BAKERY Junaidi, Junaidi; Afifudin, Mohammad Thezar; Sahar, Dian Pratiwi
i tabaos Vol 3 No 2 (2023)
Publisher : Fakultas Teknik Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/i-tabaos.2023.3.2.93-101

Abstract

Istana Roti dan Es Hilyah Bakery bergerak dibidang kuliner yang memproduksi jenis-jenis roti dengan berbagai rasa, dalam hal ini proses produksi pada Istana Roti dihadapkan dengan permasalahan optimal biaya produksi dan pendapatan. Tujuan dalam penelitian ini adalah untuk mengoptimasi biaya produksi dan pendapatan pada Istana Roti dengan menggunakan metode goal programming. Komponen biaya yang dipertimbangkan yaitu biaya bahan baku, biaya overhead, dan biaya produksi. Berdasarkan hasil pengolahan data menggunakan goal programming dapat disimpulkan bahwa optimasi biaya produksi dan penjualan pada Istana Roti dan Es Hilyah Bakery optimal jika diproduksi roti tawar sebanyak 25% pcs, roti coklat sebanyak 20% pcs, roti ampas terigu sebanyak 17% pcs, roti kasur kenari sebanyak 18% pcs, dan roti mocca sebanyak 20% pcs. Dengan rencana produksi tersebut maka efisiensi biaya produksi turun hingga 38% dan pendapatan naik hingga 4%. Selain itu dua skenario dilakukan sensitivitas, dimana sensitivitas 1 dilakukan penjualan meningkat hingga dua kali lipat dari target dan sensitivitas 2 penjualan menurun hingga dua kali lipat dari target produksi. Dari skenario tersebut dilihat adanya additivities model terhadap perubahan parameter.
A BI-OBJECTIVE COST MINIMIZATION MODEL FOR THE INSULAR TOUR ROUTE PLANNING PROBLEM Afifudin, Mohammad Thezar; Muspida, Muspida; Sahar, Dian Pratiwi
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 18 No 1 (2024): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol18iss1pp0437-0448

Abstract

This article presents a study on the development of a bi-objective cost problem optimization model in planning tourist routes in the island zone. This problem is a new variant of the tour route plan problem. Bi-objective view of two cost components, namely maritime transportation costs and ground transportation costs. Two models were formulated using a mixed integer linear programming approach. The first model was designed to minimize one of the two cost components separately. The second model was bi-objective cost minimization based on the priority weights of the two costs. It was designed to determine minimum transportation costs based on priority weights. Model testing was carried out through numerical experiments on several cases that often occur in industries in Maluku, Indonesia, especially tourism and goods shipping. Each case has variations in the number of islands and nodes. As a result, the model can demonstrate its adaptability to changes in objectives and parameters. For cases that do not have a single solution, an increase in the network structure on the number of islands and nodes will increase the variety of efficient alternative solutions. The set of efficient solutions also shows an inverse relationship between MTC and GTC. The results also show that MTC minimization cannot be used as a reference for TC minimization in cases with many nodes and islands. Efforts to minimize MTC in the island zone impact reducing total costs but do not mean minimizing total costs. In addition, based on the exponential trend line of computing time, the number of nodes has a more significant influence on computing time compared to the number of islands.
TUNA SUPPLY CHAIN RISK ANALYSIS IN THE BANDA NEIRA ISLANDS Sahar, Dian Pratiwi; Afifudin, Mohammad Thezar
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 13 No. 2 (2025): In Process
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

The Banda Sea waters contribute significantly to tuna production in Maluku. The fishing community of the Banda Neira Islands uses this zone as their main source of income. This significant contribution needs to be supported by development efforts through research and innovation. Until now, research on the tuna supply chain from the Banda Neira archipelago is particularly rare. This research seeks to provide comprehensive, micro-level information on the mapping of tuna supply chain risks in Indonesia, particularly in Maluku, that has been reviewed by several researchers. Several supply chain risk management (SCRM) methods, including 5-why analysis, supply chain risk identification (SCRI), and house of risk (HOR), were used in this study. The results indicate that the actors involved in the Banda Neira tuna supply chain include fishermen, cold storage, ship plan, and miniplan. Fishermen play a role in fishing operations, while cold storage, ship plan, and miniplan serve as buyers, processors, and ship plans/distributors to other regions. In the tuna supply chain, 11 risk events were identified, caused by 23 risk agents/factors. The two highest-ranking factors, in order of highest risk, were the lack of ice availability and high operational costs. Both factors had a cumulative percentage ratio of aggregate risk potential reaching 55.33%. This indicates that the tuna supply chain in the Banda Neira is still influenced by the performance of fishing operations (fishermen). To mitigate the 11 risk events, 22 preventive measures/actions are required.
Co-Authors A. Besse Riyani Indah Asmal, Sapta Hadijah, A. Nurul Izzah Hanafi, Rosmalina Junaidi Junaidi Kifayah Amar Marcus Tukan Muhammad Rusman Muspida, Muspida Sahar, Dian Pratiwi Sakti, Fajriani Syamsul Bahri Yulianti, Nurma