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All Journal J@TI (TEKNIK INDUSTRI) Agrointek Jurnal Optimasi Sistem Industri Industria: Jurnal Teknologi dan Manajemen Agroindustri PROZIMA (Productivity, Optimization and Manufacturing System Engineering) JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Jurnal INTECH Teknik Industri Universitas Serang Raya Widya Teknik

Ivan Gunawan

Universitas Katolik Widya Mandala Surabaya

Author-ID : 2416692

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Transportation Other

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Studi Eksploratif Manajemen Sampah Makanan pada Jaringan Toko Produk Pangan di Indonesia Ig. Jaka Mulyana; Ivan Gunawan; Venisia Tamara
Industria: Jurnal Teknologi dan Manajemen Agroindustri Vol 8, No 2 (2019)
Publisher : Department of Agro-industrial Technology, University of Brawijaya

AbstrakStudi ini bertujuan untuk mengungkap fenomena sampah makanan pada tingkat toko produk pangan di Indonesia. Wawancara semi-terstruktur dilakukan terhadap 12 responden mewakili toko produk pangan yang memiliki jaringan di seluruh Indonesia. Hasil transkrip wawancara selanjutnya dianalisis dengan metode grounded theory sehingga menghasilkan informasi valid sebagai dasar membangun narasi dan argumentasi. Volume sampah makanan pada tiap toko produk pangan diestimasi berada di kisaran 40-50 juta rupiah per bulan. Penyumbang sampah makanan terbesar adalah produk pangan segar dengan masa simpan yang relatif singkat seperti buah dan sayur. Tindakan pencegahan yang telah dilakukan oleh toko produk pangan yakni melalui kebijakan order, evaluasi order, hingga inspeksi yang ketat. Tindakan mitigasi juga dilakukan melalui diskon hingga 50%, pengolahan lebih lanjut untuk memperpanjang masa penjualan, dan penanganan produk sebaik mungkin. Tindakan pencegahan dan mitigasi tersebut semua hanya didasarkan pertimbangan dari aspek bisnis. Kesadaran dari responden dalam mengaitkan fenomena sampah makanan dengan isu lingkungan belum ada sehingga perlu dorongan melalui kebijakan pemerintah untuk meningkatkan kesadaran terhadap dampak lingkungan dari sampah makanan.Kata kunci: Indonesia, negara berkembang, sampah makanan, toko produk pangan AbstractThis study aims to reveal the phenomenon of food waste at the store-level in Indonesia. Twelve respondents representing the grocery store chains in Indonesia are interviewed by using a semi-structured interview. Grounded theory method is used to analyze the interview transcripts so it can produce valid information as the basis for building narratives and arguments. The volume of food waste in each store is estimated at IDR 40-50 million per month. The most significant food waste contributors are fresh food products with a relatively short shelf life, such as fruits and vegetables. The preventions that have been taken by the grocery stores are through order policies, order evaluation, and strict inspection. The mitigations are also carried out through discounting the price of products up to 50%, further processing to extend the sales period, and handling the product properly. However, the preventions and the mitigations are focused only on business aspect. Other findings indicate that there is still no awareness from respondents in relating the phenomenon of food waste to the environmental issue. Therefore, government policy is needed to increase awareness of the environmental impact of food waste.Keywords: developing country, food waste, grocery store, Indonesia

A Hybrid Simulation Study to Determine an Optimal Maintenance Strategy Ig. Jaka Mulyana; Ivan Gunawan; Yunia Vera Angelia; Dian Trihastuti
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in November 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

With the increasing complexity of the process industry, having excellent maintenance management is essential for manufacturing industries. Various parts that interact and interdependent with each other make a well-planned maintenance strategy is one of the major challenges facing by industry. The whole system could be interrupted just simply because of the failure of a component. Therefore, a review of a maintenance strategy must be done from a system perspective. It is suggested that the optimal preventive maintenance time interval is not only determined by the lowest maintenance cost of each machine but also its impact on the whole system. Two main indicators that can accommodate the system perspective are reliability and revenue. A large number of machines and the array of machines can be synthesized in the reliability indicator. Moreover, the creation of maximum revenue is always the main goal for a business. The best maintenance strategy will be determined from the revenue obtained by a process industry. The process industry discussed in this study is a flour mill which is very well known in Surabaya. This study applied a hybrid simulation to solve this problem. Monte Carlo simulation was used to observe the machine individually and the results are reviewed using the application of System Dynamics. Three improvement scenarios were proposed in this simulation study. Scenario 2 was chosen as the best scenario because it was able to generate the highest revenue at the end of the period. Scenario 2 recommends setting the preventive maintenance time interval considering resource availability.

Recycling Solid Waste of Coconut Oil Industry: A Response Surface-Goal Programming Approach Dwi Agustin Nuriani Sirodj; Ivan Gunawan
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in November 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Waste minimization is a key success factor to achieve sustainability, including in the edible oil industry. One type of solid waste produced substantially in this industry is spent bleaching earth (SBE), which comes from a mixture of bleaching earth (BE) and activated carbon (CA) used in the edible oil refining process. SBE that is recycled through a heating process is known as heat regenerated SBE (HRSBE). The process is influenced by two factors as stated in previous studies: temperature and time. In the current study, we report the results of experiments to find the optimal combination of temperature and time in restoring the absorbent quality of SBE by observing four quality parameters: colors (red and yellow), Free Fatty Acid (FFA), and Peroxide Value (PV). The current study uses Response Surface Methodology (RSM) to design the experiments and to find the equations of the relationship between the factors for each response; as well as Goal Programming (GP) to find the most optimal combination of factors in order to achieve aggregated quality targets. The findings show that 3.414 hours of heating at a temperature of 151.64oC allow HRSBE to produce coconut oil in accordance with the expected quality targets.

The Effect of Heat Treatment on Specific Gravity and Organoleptic Properties of Jack Bean (Canavalia ensiformis) Milk Hadi Santosa; Ivan Gunawan; Dian Trihastuti; Nicole Levina Celestina
Industria: Jurnal Teknologi dan Manajemen Agroindustri Vol 10, No 3 (2021)
Publisher : Department of Agro-industrial Technology, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.industria.2021.010.03.2

AbstractMost of the dairy products sold in the market in Indonesia are animal milk but those products cannot be consumed by people with lactose intolerance and allergies. Plant-based milk is an alternative substitute for animal milk, and the most widely known is soy milk, but the production of soybeans in Indonesia is low. Jack beans (Canavalia ensiformis) are an alternative raw material substitute for plant-based milk. Meanwhile, the protein content of jack beans is similar to soybeans, but it is not popular as a food ingredient. This study aims to obtain the acceptable combination factors in processing jack bean milk. A full factorial design experiment was conducted to analyze the effect of temperature and heating duration on the specific gravity of jack bean milk and its organoleptic properties such as color, aroma, taste, and texture. The results showed that the temperature and heating time influenced the specific gravity and organoleptic properties of jack bean milk. In addition, the best combination of factors and levels is at a heating temperature of 100 °C for 20 minutes, which results in the specific gravity of jack bean milk, which is 1.0758.Keywords: design of experiments, jack beans, plant-based milk AbstrakSebagian besar produk susu yang dijual di pasaran di Indonesia adalah susu hewani, tetapi produk tersebut tidak dapat dikonsumsi oleh penderita intoleransi laktosa dan alergi. Susu nabati dapat menjadi alternatif pengganti susu hewani. Susu nabati yang paling dikenal adalah susu kedelai, tetapi produksi kedelai di Indonesia masih rendah. Kacang koro pedang (Canavalia ensiformis) dapat menjadi alternatif pengganti dalam pembuatan susu nabati. Kacang koro pedang belum dikenal sebagai bahan makanan meskipun kandungan protein dalam kacang koro pedang mirip dengan kacang kedelai. Tujuan penelitian ini adalah untuk menemukan kombinasi faktor dalam mengolah kacang koro pedang yang dapat diterima masyarakat. Percobaan faktorial dalam rancangan acak lengkap dilakukan untuk melihat pengaruh suhu dan lama waktu pemanasan terhadap berat jenis dan karakteristik organoleptik susu koro pedang, seperti warna, aroma, rasa, dan tekstur. Hasil penelitian menunjukkan bahwa suhu dan lama waktu pemanasan mempengaruhi berat jenis dan karakteristik organoleptik susu koro pedang. Kombinasi faktor dan level terbaik diperoleh pada pemanasan dengan suhu 100 °C selama 20 menit yang menghasilkan berat jenis 1,0758.Kata kunci: kacang koro, rancangan percobaan, susu nabati

Multimethodological Framework in the Development of Traceability Systems for Food Supply Chains Ivan Gunawan
PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Vol 5 No 1 (2021): Juni
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/prozima.v5i1.1439

Food traceability has an important role in maintaining the sustainability of the food supply chain. Every player in a food supply chain must be able to create an internal and external traceability so that the chain traceability can be formed. However, building a suitable food traceability system is not an easy task. The development of a food traceability system has been identified as a complex problem due to the difficulty of accommodating the varied characteristics of each stage in the food supply chain and the interdependence between stages in the food supply chain. Therefore, to solve these complex problems a multimethodology approach is proposed. The multimethodology approach is believed to be able to solve complex multidimensional problems. This article describes a framework for multimethodology in the development of a food traceability system that involves the integration of the Decision Making Trial and Evaluation Laboratory and Interpretive Structural Modeling (DEMATEL-ISM) and System Dynamics (SD). The vegetable oil industry which manages its products in bulk is an interesting case study for the development of a food traceability system because the upstream is in the commodity focused chain and the downstream is in the consumer driven value chain. Ultimately, the multi-methodological framework proved effective in answering the research question of "How to develop a suitable traceability system for the bulk vegetable oil industry?"

Sosialisasi dan Pelatihan Pangan Organik Bagi Masyarakat Desa Sambirejo, Kecamatan Pare, Kabupaten Kediri, Jawa Timur Ig. Jaka Mulyana; Lusia Permata Sari Hartanti; Dian Trihastuti; Ivan Gunawan
JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Vol 5, No 2 (2021)
Publisher : LPPM ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jpp-iptek.2021.v5i2.1886

Penerapan berbagai teknologi dalam upaya peningkatan mutu intensifikasi pertanian secara umum fokus pada penggunaan benih unggul yang bermutu. Namun, penggunaan benih unggul bermutu menuntut penggunaan pupuk kimia sehingga menjadikan petani tergantung pada pupuk kimia. Hal ini bertentangan dengan konsep pertanian organik yang menekankan penerapan praktik-praktik manajemen yang lebih mengutamakan penggunaan input dari limbah kegiatan budidaya di lahan, serta mempertimbangkan daya adaptasi terhadap kondisi setempat. Sejalan dengan program pemerintah GO ORGANIK 2010 untuk memberdayakan petani organik, Gubug Lazaris termotivasi untuk memberdayakan masyarakat sekitar melalui kegiatan sosialisasi dan pelatihan di bidang pertanian organik. Survei awal dilakukan untuk identifikasi kebutuhan dan permasalahan yang dihadapi oleh masyarakat. Hasil survei ini digunakan untuk mempersiapkan dan menyusun materi sosialisasi dan pelatihan. Pelaksanaan sosialisasi dan pelatihan dihadiri oleh 50 peserta yang sebagian besar merupakan warga desa Sambirejo. Pada akhir kegiatan dilakukan penyebaran senerai untuk mengetahui respon dari peserta. Hasil senerai menunjukkan bahwa 57,5% peserta sangat tertarik mengonsumsi pangan organik dan 42,5% peserta tertarik menanam tanaman organik. Dari diskusi selama kegiatan diperoleh informasi bahwa tantangan pertanian organik ini terutama penyadaran masyarakat akan pentingnya hidup sehat dan kelestarian lingkungan. Tantangan yang lain adalah harga pangan organik yang relatif lebih mahal.

Aplikasi teorema bayes dalam mendukung aktivitas autonomous maintenance di pabrik gula Kedawoeng Vivi Pathrecia Susanto; Ivan Gunawan; Lusia Permata Sari Hartanti
AGROINTEK Vol 16, No 3 (2022)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v16i3.13533

Autonomous Maintenance (AM) is one of the main activities in Total Productive Maintenance (TPM). This article discusses the implementation of AM at the diffuser station at the Kedawoeng Sugar Factory using Bayes' theorem. To maintain the continuity of sugar production, the Kedawoeng Sugar Factory needs to improve the maintenance system. AM improves the maintenance system without depending on the limited maintenance personnel in the factory. The AM concept demands that the production operator be involved in the maintenance process. Increasing the operator's ability to diagnose damage through damage symptoms is necessary. The Bayes theorem successfully helps operators predict machine failure to take quick and effective action to prevent a more significant impact. This study identified 11 machine malfunction symptoms that can be detected through the five senses that lead to 14 failures. One of the research findings is that if the symptoms are only abnormal sounds, the highest probability of motor-bearing gear failure is 0.762. Suppose a warning accompanies the abnormal sound on the control panel probability of motor-bearing gear failure increases to 0.987. A clear division of machine maintenance responsibilities between operators and maintenance technicians and maintenance training for operators are suggestions for the next steps in implementing TPM.

ONLINE PRICING FOR SMALL MEDIUM ENTERPRISES’ PRODUCTS IN THE EX-LOCALIZATION OF DOLLY SURABAYA Ig. Jaka Mulyana; Ivan Gunawan; Dian Trihastuti; Yehezkiel Prakoso Putra Yunen; Dwi Agustin Nuriani Sirodj
J@ti Undip: Jurnal Teknik Industri Vol 16, No 3 (2021): September 2021
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Numerous Small and Medium Enterprises (SMEs) do not have a basic method in pricing decisions. Many times, this decision comes up based on an intuitive probe instead of a detailed analysis. This could lead to marketing problems, which may result in disruptions of financial liquidity. This also applies to SMEs wishing to sell products through the online channel. They need a proper pricing strategy, considering its different marketing strategies. Sales made through both offline channels (conventional stores) and online channels are known as Dual-Channel Supply Chain (DCSC). It is argued that the pricing decision at DCSC needs to consider consumer preferences in selecting the sales channel. One assumption commonly adopted in the DCSC pricing model is that the lost value if consumers purchase products through online channels. Therefore, the pricing decision for the online channel should be cheaper than the price on the offline channel. This study aims to assist SMEs in the ex-localization of Dolly in Surabaya in determining the price of products to be sold through online channels. Three types of products: batik, chips, and leather shoes were selected as research samples to represent the product groups: craft, fashion, and processed food. This study proposes an optimal online price strategy through experiments with a mathematical model. Model parameters, namely consumer preferences in choosing sales channels, are obtained through surveys. Apart from that, surveys are also used to reveal which platforms consumers are interested in shopping online. Shopee and Instagram were chosen by respondents as the most popular marketplaces and social media for online shopping. Finally, the online prices proposed for the batik product are IDR 82,500-IDR 66,000; chips Rp7,620-Rp6,336; and leather shoes Rp.103,800-Rp82,200.

Perancangan dan Pembuatan Alat Mesin Penetas Otomatis untuk Kelompok Peternak Ayam KUB di Blitar Martinus Edy Sianto; Hadi Santosa; Julius Mulyono; Ivan Gunawan; Yuliati Yuliati
JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Vol 6, No 2 (2022)
Publisher : LPPM ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jpp-iptek.2022.v6i2.2148

Blitar merupakan salah satu sentra penghasil ayam pedaging dan ayam petelur di Indonesia. Ketidakstabilan harga daging dan telur ayam yang dibudidayakan saat ini membuat peternak melirik potensi ayam KUB (Kampung Unggul Balitnak) yang harganya lebih stabil. Meskipun ayam KUB memiliki usia pemanenan lebih panjang, ayam KUB lebih tahan penyakit dan memiliki tingkat produksi telur yang tinggi, mencapai 70%. Telur ayam KUB juga dapat ditetaskan untuk dijadikan indukan yang baru karena telur yang dihasilkan merupakan hasil perkawinan dengan pejantan. Dengan demikian, peternak tidak tergantung pada perusahaan besar untuk ketersediaan anak ayam/day-old chicken (DOC). Namun, karena belum banyak yang membudidayakan jenis ayam ini; telur, DOC, pejantan, dan indukan belum banyak tersedia di pasaran. Peternak harus melakukan seleksi mandiri untuk mendapatkan indukan baru. Untuk meningkatkan produktivitas, telur yang memenuhi syarat perlu ditetaskan dengan menggunakan mesin penetas. Saat ini, peternak yang ingin menetaskan telurnya harus menitipkan telur di tempat penetasan bebek yang lokasinya jauh dan hanya bisa dilakukan jika ada kapasitas yang tidak terpakai. Biaya untuk menetaskan telur pun mencapai Rp1.700,00 per telur yang menetas. Mitra sangat memerlukan mesin penetas telur sendiri untuk menghindari ketergantungan terhadap peternak lain. Di samping itu, saat ini, pembentukan paguyuban peternak ayam KUB sedang dirintis yang anggotanya sebagian besar adalah peternak pemula. Keberadaan mesin penetas akan sangat efektif bagi peternak ayam KUB jika mesin penetas dikelola oleh paguyuban. Oleh karena itu, kegiatan pengabdian masyarakat yang dilakukan ialah merancang dan membuat alat penetas telur berteknologi tepat guna yang mudah dioperasikan dan mudah dipelihara.

Optimasi Waktu Penyelesaian Kuota Vaksin pada Layanan Vaksinasi di Pusat Perbelanjaan dengan Simulasi Kejadian Diskrit Ivan Keane Hutomo; Khenny Hosana; Ivan Gunawan; Lusia Permata Sari Hartanti
Jurnal INTECH Teknik Industri Universitas Serang Raya Vol. 9 No. 1 (2023): Juni
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/intech.v9i1.5045

Pemerintah Indonesia berjuang mengatasi pandemi COVID-19 ini dengan memberikan vaksin gratis terhadap masyarakat guna menciptakan herd immunity. Tempat penyelenggaraan vaksin yang terbatas dan desakan untuk segera menyelesaikan target vaksinasi memunculkan ide untuk menjadikan pusat perbelanjaan sebagai tempat vaksinasi massal. Pusat perbelanjaan hanya dapat menyediakan waktu yang terbatas untuk menyelenggarakan layanan vaksin. Layanan vaksin harus selesai sebelum pusat perbelanjaan beroperasi agar tidak mengganggu pengunjung pusat perbelanjaan. Studi ini bertujuan menemukan konfigurasi sistem antrean yang optimal untuk menyelesaikan kuota dosis vaksin yang diberikan pemerintah pada setiap penyelenggaraan vaksinasi massal di pusat perbelanjaan. Studi ini dilakukan pada konfigurasi sistem antrean vaksinasi massal yang diselenggarakan di lobi Galaxy Mall 3 di Surabaya. Model simulasi kejadian diskrit dikembangkan untuk merepresentasikan sistem nyata dan mengevaluasi konfigurasi sistem antrean vaksinasi booster. Tiga usulan skenario perbaikan yang aplikatif telah diuji. Hasilnya, skenario 3 (kombinasi skenario 1 dan skenario 2) yakni menggandakan kapasitas booth 4 dan mengurai penumpukan di ruang tunggu luar dengan meningkatkan ukuran kelompok peserta vaksin yang masuk dari 6 menjadi 9 merupakan strategi operasional yang paling efektif untuk meningkatkan performa sistem antrean. Waktu yang dibutuhkan untuk menyelesaikan 250 dosis vaksin turun sebesar 45% dari 2,5350 jam pada kondisi awal menjadi 1,3989 jam pada skenario 3.

Co-Authors Daniel Christian Natan Dian Trihastuti Dwi Agustin Nuriani Sirodj Hadi Santosa Ig. Jaka Mulyana Ivan Keane Hutomo Julius Mulyono Khenny Hosana Lusia Permata Sari Hartanti Martinus Edy Sianto Nicole Levina Celestina Venisia Tamara Vivi Pathrecia Susanto Yehezkiel Prakoso Putra Yunen Yuliati Yuliati Yunia Vera Angelia

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