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All Journal SPEKTRUM INDUSTRI OPSI Tekinfo | Scientific Journal of Industrial and Information Engineering Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Jurnal Teknologi Pangan dan Hasil Pertanian Jurnal Sains dan Teknologi Dharma: Jurnal Pengabdian Masyarakat
Puryani .
Jurusan Teknik Industri, Fakultas Teknik Industri Universitas Pembangunan Nasional ”Veteran” Yogyakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary

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Penentuan Kriteria Pemilihan Strategi Sistem Manufaktur Menggunakan Analytic Hierarchy Process Apriani Soepardi; Puryani .; Mochammad Chaeron; Isti Anggraini
Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Vol. 14 No. 2 (2012): DECEMBER 2012
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.049 KB) | DOI: 10.9744/jti.14.2.107-114

Abstract

This paper presents the decision making process for the selection of criteria manufacturing system using AHP. The accuracy of the selection strategy is based on many criteria that termed as agility capabilities. Several influential criteria that is used in the selection are responsiveness, product quality, product cost, operator skills, and inventory. From these criteria, manufacturing responsiveness has the highest priority weight. On these criteria, the company cast metal is required to have the agility capabilities in reduction of lead-time for product development, new product introduction, and a wide variety of products. While the criteria for product quality takes places at second priority, followed by product cost, operator skill and inventory. From agility capability priorities that must be owned by the company of cast metal, the manufacturing system according to the characteristics of the organization and be able to respond appropriately to environmental changes is lean manufacturing system.
Model Persediaan pada Produk yang Mendekati Masa Kadaluwarsa: Mempertimbangkan Diskon Penjualan dan Retur Laila Nafisah; Wellem Sally; Puryani Puryani
Jurnal Teknik Industri Vol. 18 No. 1 (2016): JUNE 2016
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (573.958 KB) | DOI: 10.9744/jti.18.1.63-72

Abstract

Most products are sold in Mirota Campus Supermarkets have perishable nature. One of the strategies undertaken in product sales is by providing discounts on products approaching expiry date. The closer to the expiration date, then the discounts given per unit will increase. Allows product pemasoks can in returns with the terms and conditions agreed. In this paper, developed a model multi-item inventory for a product that has a shelf-life of taking into account discounts and product returns. Completion of the model is done with optimization approach based on parameters that influence in this model. Numerical examples are given at the end of this paper to illustrate the model settlement algorithms.
Fuzzy Production Inventory Model considering Imperfect Quality and Shortage: A Case Study in a Goat Milk SMEs Puryani Puryani; Laila Nafisah; Nuansa Indriya Pramasthi; Apriani Soepardi; Mohammad Chaeron
OPSI Vol 15, No 2 (2022): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v15i2.7574

Abstract

Goat milk powder is one of the perishable processed products. The decreasing quality of goat milk powder can cause financial losses to the company if not regulated properly. So far, the company is also faced with the problem of consumer demand uncertainty. When demand for powdered goat's milk is high, the company experiences stockout but can be overcome by backorder. When demand is low, there will be overstock. Overstock conditions, in addition to causing high holding costs, are also at risk of product quality degradation or expiration. In this study, an inventory model of goat milk powder was developed that considers the uncertainty of demand, product quality, and backorder to determine the optimal production quantity so that the total inventory cost incurred is minimum. The basic model used is economic production quantity. Uncertainty in demand and the percentage of products declining in quality is approached using a triangular fuzzy. While the defuzzification technique used is signed distance.
Determination of Customer Order Decoupling Point (CODP) Based on Mass Customization Concept to Minimize Manufacturing Lead Time Yuli Dwi Astanti; Sadi Sadi; Deni Widiyanto; Puryani Puryani; Trismi Ristyowati
OPSI Vol 16, No 1 (2023): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v16i1.9679

Abstract

Make To Order (MTO) is a manufacturing strategy that executes different orders based on consumer demand. In the MTO strategy, products are produced only when there are orders from consumers. In this MTO system, the production process starts when an order arrives and starts with planning raw materials which takes a long time and causes a long lead time (MLT). Long MLT often causes production delays and forces companies to pay more overtime. Companies must adopt a production system that can fulfill a variety of orders and has a fast response time. In this research, a case study was conducted on a shoe and bag manufacturing company in the fashion industry. This study aims to implement a mass customization manufacturing (MC) strategy to minimize MLT. The MC strategy uses the concept of a production process based on orders and inventory. This study is expected to reduce MLT so that production delays do not occur again. The results of this study indicate that relocation of the customer order decoupling point (CODP) can reduce MLT from 30 days to 26 days. By reducing this, production delays can be overcome. In terms of costs, this production system is lower than before and the profits are higher.
Investment analysis of solar power plant installation on the roof of the central business district office building with the best investment value Soejanto, Irwan; Poerbaningrat, Raden Muhammad Nalindra; Ristyowati, Trismi; Puryani, Puryani
OPSI Vol 17, No 1 (2024): ISSN 1693-2102
Publisher : Jurusan Teknik Industri Fakultas Teknologi Industri UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/opsi.v17i1.11233

Abstract

The Central Business District (CBD) office building is making efforts to reduce building electricity costs, and one alternative is solar power plant installation. PT. Rancang Prima Sejahtera, engaged in the solar energy industry, conducts consulting services with Central Business District office buildings, so PT. Rancang Prima Sejahtera made an indicative proposal with several solar power plant installation scenarios to be installed on the roof of the Central Business District office building. Four scenarios are created from the combination of 2 PV modules and two inverters. Each scenario created will be assessed for the level of opt, and the investment value will be calculated. In combining components using the principles of the Vereun Deutsche Ingineuer (VDI) 2222 method and assessed each scenario using six aspects of assessment.Meanwhile, the investment analysis assessment uses the parameters of Cost of Energy (CoE), Net Present Value (NPV), Internal Rate of Return (IRR), Benefit-Cost Ratio (B-CR), and discounted payback period. The results of the analysis conducted found that the third scenario was the best scenario with a percentage of the design value of 82.5%, CoE value of Rp398.31/kWh, NPV value of Rp2,451,719,005, IRR percentage of 23.75%, B-CR value of 7.8, and DPP value for 6.8 years with a project life of 30 years. The findings of the investment research indicate that the implementation of solar power plant installations in office buildings located in Central Business Districts yields long-term cost reductions in electricity expenses over a 30-year period, as opposed to relying solely on the services provided by the State Electricity Enterprise.
INISIASI KELOMPOK MASYARAKAT PENGELOLA SAMPAH ORGANIK DENGAN BUDIDAYA MAGGOT BSF (BLACK SOLDIER FLY) DI PADUKUHAN DUKUH, SINDUHRJO, NGAGLIK, SLEMAN, D.I YOGYAKARTA Astanti, Yuli Dwi; Nandari, Wibiana Wulan; Santoso, Dian Hudawan; Hasanah, Khuswatun; Puryani, Puryani
Dharma: Jurnal Pengabdian Masyarakat Vol 4, No 2 (2023): November
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/dlppm.v4i2.11069

Abstract

Waste is an unresolved government problem. The largest waste collection site (TPS) in Yogyakarta, TPS Piyungan, is starting to get tired of collecting waste from various corners of Yogyakarta. One of the efforts to overcome this problem, the government instructed the Waste Sorting Movement. Based on the Ministry of Environment and Forestry (KLHK), the composition of waste in Indonesia is dominated by organic waste, which reaches 57% of the total landfill. Organic waste can be processed by cultivating BSF Black Soldier Fly (Hermetia Illucens). BSF is a black fly whose maggots (larvae) can degrade organic waste. Maggots (maggots) produced from black fly eggs are very active in eating organic waste. This bioconversion process by maggots can degrade waste more quickly, is odorless, and produces organic compost, and the larvae can be a good source of protein for poultry and fish feed. Maggots have the ability to break down organic waste 2 to 5 times their body weight for 24 hours. One kilogram of maggot can consume 2 to 5 kilograms of organic waste per day. Maggots that have become prepupae and BSF fly carcasses can still be used as animal feed because they are rich in protein. The cocoons can also be used as fertilizer. This process was socialized to Sub Urban groups in the Padukuhan Dukuh, Sidoharjo, Ngaglik, Sleman areas, as a response to the unresolved waste problem. Activities are carried out by: Carrying out outreach related to waste problems and BSF maggot cultivation, Carrying out waste sorting training, Carrying out training on BSF maggot cultivation, Distribution of rubbish bins to residents (partners) as containers to accommodate organic waste, Creation of organic waste storage areas, Construction of BSF Maggot houses , Breeding activities, maintenance and harvesting of BSF maggots, Packaging of BSF Maggot products, Sales of BSF Maggot products
PEMODELAN WAKTU PEMELIHARAAN PENCEGAHAN OPTIMAL DENGAN MEMPERTIMBANGKAN KERUGIAN PRODUKSI A. Soepardi; Puryani Puryani; M. Chaeron; P.L. Puspita
Spektrum Industri Vol. 12 No. 2: Oktober 2014
Publisher : Universitas Ahmad Dahlan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v12i2.1674

Abstract

Penelitian ini berhubungan dengan penyusunan model total biaya pemeliharaan untuk menentukan interval pemeliharaan pencegahan yang optimal dengan kriteria minimasi total biaya. Komponen biaya pemeliharaan yang dolibatkan adalah biaya pemeliharaan pencegahan, biaya pemeliharaan perbaikan, dan biaya kerugian karena lamanya downtime alat. Karakateristik model yang dibangun dipengaruhi oleh pola kerusakan dan total downtime alat. Kerusakan alat dimodelkan dengan pendekatan black-box dengan anggapan mengikuti fungsi intensitas Power Law Process. Sedangkan downtime alat tergantung pada lamanya kegiatan pemeliharaan pencegahan dan pemeliharaan perbaikan yang dikarakteristikkan oleh distribusi lamanya waktu perbaikan. Selain dilakukan penentuan interval pemeliharaan optimal, penelitian ini juga memberikan analisis sensitivitas terhadap semua parameter model yang digunakan. Kata kunci : pendekatan black box, downtime, power law process, pemeliharaan pencegahan, pemeliharaan perbaikan
Land Use Change Analysis Using Plugin MOLUSCE in Yogyakarta Urban Agglomeration Area Dian Hudawan Santoso; Puryani, Puryani; Algary, Tissia Ayu; Moch. Chaeron; Hilmi, Ichlasul Kevin
INSOLOGI: Jurnal Sains dan Teknologi Vol. 4 No. 2 (2025): April 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v4i2.5032

Abstract

Rapid and dynamic changes in land use have the potential to impact a variety of environmental and socio-economic factors. This research endeavors to project land use change in the Yogyakarta Urban Agglomeration Region in 2024 and 2026 by leveraging image analysis technology. The proposed methodology involves the implementation of image analysis through the utilization of the MOLUSCE (Modeling Land Use Change) plugin and Artificial Neural Networks (ANN). The MOLUSCE plugin facilitates the modeling and simulation of land use change, informed by historical data and environmental variables. The employment of ANN enhances prediction accuracy by leveraging its sophisticated and non-linear data processing capabilities. The satellite image data from recent years was processed to identify patterns of change and their driving factors. The analysis of land use change between 2024 and 2026 in the study area revealed a substantial increase in built-up land, amounting to 9.03%, indicative of the proliferation of urbanization. Conversely, green open space witnessed a substantial decline of 25.96%, signifying the conversion of green land into built-up land.
Penetapan Kadar Aflatoksin B1, B2, G1, dan G2 pada Olahan Kacang Tanah dengan Metode HPLC Salsabila, Andalusia Trisna; Wardhani, Rike Maya; Chodijayanti, Ary; puryani, Puryani; damat, Damat; Anggriani, Rista
Jurnal Teknologi Pangan dan Hasil Pertanian Vol. 16 No. 2 (2021): September
Publisher : Faculty of Agricultural Technology, Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jtphp.v16i2.4544

Abstract

Kacang tanah (Arachis hypogaea  L) memiliki banyak manfaat seperti mencegah peningkatan kadar kolesterol, pencegahan keriput, kandungan serat tinggi, sumber energi dan pencegahan kanker. Akan tetapi jika dalam proses pemanenan, penyimpanan serta pengolahannya yang tidak sesuai, maka kacang tanah terkontaminasi aflatoksin yang berbahaya bagi kesehatan. Batas kadar cemaran aflatoksin pada kacang tanah dan hasil olahannya diatur dalam Peraturan Badan POM Nomor 18 Tahun 2018. Penelitian ini bertujuan menetapkan kadar kontaminasi aflatoksin B1, B2, G1 dan G2 pada olahan kacang tanah dengan prinsip ekstraksi menggunakan immunoaffinity column dengan instrumen High Performance Liquid Cromatogram (HPLC) detektor fluoresen. Hasil menunjukkan bahwa kromatogram baku kerja Aflatoksin G1, G2, B1, dan B2 berturut-turut menunjukkan respon terbentuknya peak pada waktu retensi 6,966 menit, 8,395 menit, 12,806 menit dan 10,395 menit. Hasil kromatogram sampel yang diuji tersebut memberikan respon terbentuknya peak pada waktu retensi yang berbeda dengan baku aflatoksin. Sehingga kedua sampel tersebut dapat disimpulkan tidak terdeteksi mengandung aflatoksin B1, B2, G1 dan G2 dengan nilai LOD aflatoksin G1 sebesar 0,8311 ng/mL, aflatoksin G2 sebesar 0,0941 ng/mL, aflatoksin B1 sebesar 0,3046 ng/mL dan aflatoksin B2 sebesar 0,3143 ng/mL.
Co-Authors A. Soepardi Algary, Tissia Ayu Apriani Soepardi Apriani Soepardi Apriani Soepardi Chaeron, M. Chodijayanti, Ary Damat, Damat Deni Widiyanto Desy Rahmawati Dian Hudawan Santoso Dwi Setyo Muyatno Hasanah, Khuswatun Hilmi, Ichlasul Kevin Intan Berlianty Irwan Soejanto Isti Anggraini Isti Anggraini Laila Nafisah M. Chaeron Moch. Chaeron Mochammad Chaeron Mochammad Chaeron Mohammad Chaeron Muhammad Isnaini Rozaq Muhammad Shodiq Abdul Kanan Nandari, Wibiana Wulan Nuansa Indriya Pramasthi NUR KUMALA SARI Nursubiyantoro, Eko P.L. Puspita Poerbaningrat, Raden Muhammad Nalindra Pradeas Ridiasa Purwanto Purwanto Puspita, P.L. Rista Anggriani Sadi Sadi Sally, Wellem Salsabila, Andalusia Trisna Soepardi, A. Solly Aryza Sutrisno Sutrisno Trismi Ristyowati Trismi Ristyowati Vertha Fuji Rizky Syafriani Wardhani, Rike Maya Wawan K Risal Wellem Sally Yuli Dwi Astanti