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All Journal Jurnal Teknoin J@TI (TEKNIK INDUSTRI) Jurnal Rekavasi Jurnal Optimasi Sistem Industri REKAYASA Jurnal Ilmiah Teknik Industri Proceeding SENDI_U OPERATION EXCELLENCE: Journal of Applied Industrial Engineering JOURNAL OF INDUSTRIAL AND MANUFACTURE ENGINEERING JRSI (Jurnal Rekayasa Sistem dan Industri) Wikrama Parahita : Jurnal Pengabdian Masyarakat Tekinfo | Scientific Journal of Industrial and Information Engineering Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Civil Engineering Journal Jurnal INTECH Teknik Industri Universitas Serang Raya Jurnal Ilmiah Teknik Industri Indonesian Journal of Electrical Engineering and Computer Science International Journal of Sustainable Transportation Technology Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Makara Journal of Technology Metris: Jurnal Sains dan Teknologi
Wahyudi Sutopo
Universitas Sebelas Maret
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation Other

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Optimizing Supply Chain Collaboration Based on Agreement Buyer-Supplier Relationship with Network Design Problem Sutopo, Wahyudi; Erliza, Ayu; Heryansyah, Arien
Makara Journal of Technology Vol. 20, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In recent years, the rising competitive environment with shorter product life cycles and high customization forces industries to increase their flexibility, speed up their response, and enhance concurrent engineering designs. To integrate these prospects, supply chain collaboration becomes a pertinent strategy for industries to strengthen their competitiveness. The network design problem is used to implement supply chain collaboration. In the buying and selling process, sharing information between buyer and supplier are important to obtain a transaction decision. The optimimum supply chain profit can be identified by mathematical model of network design problem. The Mathematical Model takes into consideration the uncertainity in negotiation of supply chain, transportation problems, and locationallocation of products from supplier to buyer in the planning based on the time value of money. The results show that the model can be used to optimize the supply chain profit. The supplier gets a profit because income were received in the initial contract, while the buyer profit comes from lower pay.
Evaluation of Driving Comparative Life Cycle Cost Assessment of Conventional and Electric Motorcycles in Indonesia: Monte Carlo Analysis Lsa Aldira Hafidza; Yuniaristanto; Wahyudi Sutopo; Muhammad Hisjam
Jurnal Optimasi Sistem Industri Vol. 21 No. 2 (2022): Published in November 2022
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v21.n2.p55-65.2022

Abstract

The adoption of electric vehicles (EVs) is one of the solutions to reduce emission problems. Vehicle cost analysis is one of the keys to seizing the Indonesian market. As a consumer, it is not only the purchase price that needs to be considered, but the life cycle costs throughout ownership also need to be considered in the purchase. This study discusses the life cycle cost (LCC) of EVs in Indonesia, especially electric motorcycles (EMs), which will be compared with conventional motorcycles (CMs). In particular, this study aims to encourage the government's target for ownership of 2.1 million EMs in Indonesia by 2025. The novelty of this research is to develop a more comprehensive LCC model by considering the costs in terms of tangible and intangible to compare the two types of motorcycles using Monte Carlo simulation. This simulation is used to coordinate the behavioral uncertainty of motorcycle users. As a result, the value of an EM is more economical than CM for various users. The average value percentage of EMs is lower than CMs by 45% (IDR 30,6 million). In addition, several scenarios are also analyzed to maximize consumer welfare in Indonesia.
PENGEMBANGAN SISTEM DISKON UNTUK PEMBELI KAIN DENGAN MEMPERTIMBANGKAN KONSEP WAKTU NILAI UANG: STUDI KASUS Novitria Arie Prabarini; Wahyudi Sutopo
J@ti Undip: Jurnal Teknik Industri Volume 8, No.3, September 2013
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (493.809 KB) | DOI: 10.12777/jati.8.3.181-186

Abstract

PT XYZ adalah suatu perusahaan tekstil yang memproduksi dan menjual kain grey. Dari data dua tahun terakhir,  perusahaan memiliki masalah dalam memenuhi permintaan pembeli dan telah mengalami kehilangan kesempatan penjualan hingga 9%. Masalah tersebut dapat mengakibatkan kepercayaan pelanggan semakin menurun, bahkan perusahaan dapat kehilangan pembeli. Perkembangan bisnis fashion secara pesat diduga mempengaruhi volume permintaan. Pengembangan sistem diskon yang tepat berdasarkan waktu pemesanan dapat mendorong pembeli untuk lebih cepat dalam melakukan pemesanan sehingga perusahaan dapat menyusun rencana produksi dengan baik. Pada penelitian ini telah dikembangan sistem diskon melalui tiga langkah, yaitu: identifikasi faktor yang dipertimbangkan oleh pembeli dalam mengambil keputusan pemesanan;  formulasi diskon yang mempertimbangkan nilai waktu dari uang (time value of money); dan  prosedur operasi standar sebagai dasar perusahaan mengimplementasikan sistem diskon yang diusulkan. Dari hasil contoh numerik dapat ditunjukkan bahwa sistem usulan dapat digunakan perusahaan mendorong  pembeli memesan lebih awal, rencana produksi dapat disusun lebih cepat, dan pemenuhan permintaan dapat dilakukan lebih baik sehingga hubungan pemasok-pembeli dapat lebih baik.Kata kunci: hubungan pemasok-pembeli, nilai waktu dari uang, prosedur operasi standar, sistem diskon Abstract  XYZ Ltd. is a company which manufactures and sells textile gray fabric. Data from the last two years, the company has problems in fulfilling the demand of buyers and have experienced lost sales opportunities up to 9%. The problem can result in decreased customer confidence, even the company may lose buyers. The rapid development of the fashion business is expected to affect the volume of demand. The development of appropriate discount system based on the appropriate ordering time can encourage buyers to more quickly in an order so that the company can plan production well. In this study, the system has cultivated a discount through three steps, namely: identification of the factors considered by the buyer in making a decision ordering; discounts formulation that considers the time value of money, and standard operating procedures as a basis for implementing the company's discount system proposed. From the numerical example results. It can be shown that the proposed system can be used by company to encourage buyers to order early, the production plan can be developed more quickly, and the order fulfillment can be improved so that the supplier-buyer relationship can be enhanced. Keywords: supplier-buyer relationship, time value of money, standard operating procedures, discount system
Conceptual Design of Business Model Canvas Mobile Battery Swap Charging Station Renny Rochani; Wahyudi Sutopo; Roni Zakaria; Fakhrina Fahma
Jurnal Ilmiah Teknik Industri Vol. 22, No. 1, June 2023
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v22i1.21247

Abstract

The users of electric motorcycle in Indonesia are currently still limited. This is due to three main things, namely the limited amount of energy charging infrastructure, the lack of socialization regarding the knowledge of technical aspects of electric motorcycle and the financing aspects of electric motorcycle ownership. This research develops a conceptual design business model canvas of Mobile Battery Swap Charging Stations (MBSCS) for electric motorcycles which aim to find solutions to the three problems above. The development of the MBSCS model is an alternative to increase the number of electric charging infrastructure quickly, because the advantages of MBSCS include having a higher level of flexibility and simpler installation than Fixed Charging Stations. This research combines the need of increasing infrastructure and improving socialization to the community regarding the advantages of using electric motorcycle through marketing communication media. Increasing the understanding of technical aspects of electric motorcycle is expected to increase people's motivation to adopt electric motorcycle. This research uses secondary data to explore MBSCS business canvas model (BMC), MBSCS ecosystem, and MBSCS prototype design. The analysis illustrates the MBSCS ecosystem that align with the motorcycle users in Indonesia.  The existence of MBSCS is expected to significantly increase the buying interest, adoption, and diffusion of electric motors more broadly.
Adopsi-Difusi Teknologi Penyimpanan Energi dan Kendaraan Listrik untuk Media Pembelajaran Akses Energi yang Berkelanjutan Sutopo, Wahyudi; Fahma, Fakhrina; Hisjam, Muhammad; Zakariya, Roni; Rochani, Renny; Yuniaristanto, Yuniaristanto; Priyandari , Yusuf
Wikrama Parahita : Jurnal Pengabdian Masyarakat Vol. 8 No. 2 (2024): November 2024
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/jpmwp.v8i2.8375

Abstract

Pengabdian kepada Masyarakat (PkM) berlokasi di Kabupaten Magetan, Jawa Timur, wilayah yang memiliki potensi Energi Baru Terbarukan (EBT) yang melimpah dan memiliki rencana investasi pada bidang elektrifikasi. Namun, adopsi-difusi teknologi elektrifikasi dan EBT dari masyarakat masih rendah, diantaranya dapat ditunjukan dengan rendahnya pemanfaatan energi surya dan rendahnya elektrifikasi kendaraan listrik. Solusi yang ditawarkan melalui PkM ini adalah mengembangkan simulator adopsi-difusi teknologi penyim­pan­an energi dan kendaraan listrik untuk media pembelajaran akses energi yang berkelanjutan bagi masyarakat. Metode pelaksanaan PkM dilakukan melalui: merancang media pembelajaran; memasang di taman refugia; menyusun modul dan pelatihan; pendampingan pengelolaan; serta peng­ukuran tingkat penerimaan. Sistem alat peraga yang dikembangkan terdiri dari: 1. etalase PLTS Atap, 2. Stasiun Penukaran Baterai Kendaraan Listrik Umum (SPKLU), 3. sepeda motor listrik, dan 4. smart farming). Media pembelajaran dapat digunakan untuk learning by doing dan selanjutnya dievaluasi perseps­inya terhadap kemudahan akses teknologi energi terbarukan. Pelak­sanaan PkM diharapkan menurunkan “chasm” atau jurang hambat­an adopsi tekno­logi dan masyarakat dapat menerima keberadaan inovasi teknologi. Berdasarkan survei sebelum dan sesudah kepada pengunjung, terlihat ada­nya peningkatan pemahaman akan pentingnya akses energi berkelanjutan yang signifikan dibuktikan dengan uji wilcoxon signed rank dan ditunjukkan kemanfaatannya dari nilai Benefit Cost Ratio (BCR), dimana hasil perhitungan menunjukkan nilai 4,57 sehingga layak diterapkan (BCR > 1,0).
Business conceptual design of photovoltaic installation for billboard lighting Chrissandhi, Erico Sofyan; Pratiwi, Christa Dian; Hastuti, Tiwik Tri; Hisjam, Muhammad; Sutopo, Wahyudi
Operations Excellence: Journal of Applied Industrial Engineering Vol. 15, No. 2, (2023): OE July 2023
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2023.v15.i2.077

Abstract

The usage of advertising as a medium for marketing products/services is used by various businesses to increase profits. The advertising medium mainly used is billboards, which still use fossil energy as an energy source. The Indonesian government's 2060 Net Zero Emission Program promotes using renewable energy (RE) as an energy source, such as photovoltaic (PV) as electrical energy from solar heat. As with RE, the development of PV still has problems in products and business, but PV is ready to be used as an energy source to reduce electricity bill costs. The business idea of PV installation in the advertising company sector emerged to support the government program Net Zero Emission, making advertising companies "green jobs" and absorbing human resources from vocational schools. Business conceptual design with value chains, business model canvas, and lean canvas expected can provide an overview of business opportunities with EBT for Indonesia that are environmentally friendly and energy independent. 
Determining priority criteria for industry 4.0 maturity models in small and medium enterprises in Indonesia Nabilah, Nabilah; Hisjam, Muh; Sutopo, Wahyudi
Operations Excellence: Journal of Applied Industrial Engineering Vol. 15, No. 3, (2023): OE November 2023
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2023.v15.i3.089

Abstract

For manufacturing companies, especially Small and Medium Enterprises (SMEs), currently measuring the level of the Maturity Model (MM) is not an easy thing to do, because there are still many obstacles, including not knowing what factors are priorities in developing the MM. This research aims to identify the criteria that influence the measurement of maturity model based on survey results in small and medium enterprises. Using the Fuzzy DEMATEL method to find the priority and causality of each criterion attribute. The research results show that the Advanced IT criteria is the first priority to be considered to have the most influence on measuring the industry 4.0 maturity model.
Safety Risk Assessment Model for Bridge Construction Hartono, Widi; Kristiawan, Stefanus A.; Handayani, Dewi; Sutopo, Wahyudi
Civil Engineering Journal Vol 11, No 1 (2025): January
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-01-010

Abstract

In Indonesia, construction accidents have occurred during the construction of bridges and elevated roads, peaking in 2017. The lifting of girder beams has failed in several construction projects, and the formwork has failed during pier construction. The reasons for these work accidents are human and equipment factors, which caused material losses and loss of life. A risk assessment model for bridge construction work accidents in construction projects is proposed in this paper, with the work breakdown structure (WBS), risk breakdown structure (RBS), analytic hierarchy process (AHP), and rating being integrated to assess the risk of bridge construction work accidents. This model is expected to improve safety in bridge construction by providing effective safety planning, especially in the accident risk assessment process. The study results indicate that the WBS and RBS can outline and explain the identification of construction safety risks for bridges and provide insight into the interrelationship of construction phases and the potential risks. The relationship between the WBS and RBS is created in the form of a coupling matrix, and we identify the potential risky activities at each phase and the corresponding construction phases. The AHP can be used to calculate the weights and priorities of the WBS and analyze the magnitude of the risk index for its related risky activities; then, the rating method can be used to analyze the risk index. Girder and diaphragm installation work involves a high risk of workers falling during the erection of girders. Doi: 10.28991/CEJ-2025-011-01-010 Full Text: PDF
PENGEMBANGAN MODEL BISNIS KONVERSI SEPEDA MOTOR LISTRIK DI INDONESIA (STUDI KASUS PT. EKOLEKTRIK KONVERSI MANDIRI) Aqil, Hilmy; Sutopo, Wahyudi; Rochani, Renny
Jurnal Ilmiah Teknik Industri Vol. 12 No. 3 (2024): Jurnal Ilmiah Teknik Industri : Jurnal Keilmuan Teknik dan Manajemen Industri
Publisher : Program Studi Teknik Industri, Fakultas Teknik Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jitiuntar.v12i3.31055

Abstract

The electric motorcycle conversion program is an initiative introduced by the Indonesian government aimed at reducing dependence on fossil fuels and lowering greenhouse gas emissions. This research aims to develop an effective business model for PT. Ekolektrik Konversi Mandiri in converting gasoline-powered motorcycles into electric motorcycles. The research methodology uses a descriptive qualitative approach, including case study analysis, interviews with stakeholders, and evaluation of various relevant business models. The results show that a business model prioritizing strategic partnerships, operational efficiency, and a strong value proposition for consumers can enhance the success and sustainability of the electric motorcycle conversion business. Additionally, the research identifies key challenges such as high conversion costs and limited supporting infrastructure and provides recommendations to address these barriers. With the right business model, electric motorcycle conversion businesses like PT. Ekolektrik Konversi Mandiri are expected to significantly contribute to the Indonesian government's target of achieving Net Zero Emissions by 2060.
REDESIGNING LITHIUM BATTERY PRODUCTS AND APPLYING THE BUSINESS MODEL CANVAS WITH A LEAN STARTUP APPROACH (CASE STUDY: PT. BATEX ENERGI MANDIRI) Rahmatullah, Hasan Ravi; Sutopo, Wahyudi; Rochani, Renny
Jurnal Ilmiah Teknik Industri Vol. 12 No. 3 (2024): Jurnal Ilmiah Teknik Industri : Jurnal Keilmuan Teknik dan Manajemen Industri
Publisher : Program Studi Teknik Industri, Fakultas Teknik Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jitiuntar.v12i3.32795

Abstract

Indonesia is experiencing rapid growth in the number of motorized vehicles, which increases the need for lithium batteries as an efficient energy storage solution, where startups such as PT Batex need to face the challenges of innovation and market understanding through lean startup methods to improve their products and competitiveness in the industry. This research focuses on redesigning lithium battery batteries to create innovative products that are successful in the market by considering customer needs, business feasibility, and the application of lean startup methods while addressing the challenge of lack of product innovation. This research method uses a qualitative approach with stages including problem identification, data collection through observation, interviews, and prototype testing. Furthermore, analysis is carried out to evaluate product development results and integrate customer feedback into the final design. The redesign of lithium battery batteries by PT Batex shows success with a durability of up to 3,000 charging cycles, a customer satisfaction rate of 90%, and an increase in market share from 5% to 15% in one year. In the future, more in-depth market analysis and research on integrating lithium battery batteries with renewable energy systems will be needed to support sustainability and product development.
Co-Authors -, Febrinata Ahad Ali Ahmad Rafi Adnanta Aji, Vania Putri Anita Andria Sari Apriliana, Frisheila Sely Aqidawati, Era Febriana Aqidawati, Era Febriana Aqil, Hilmy Ardiansyah, Rakhman Arien Heryansyah Astuti, Rina Wiji Ayusya Khoirun Nisa Azizah Aisyati Chrissandhi, Erico Sofyan Christa Dian Pratiwi Danang Miftahudin Pratama Dewi Handayani Dewiningrum, Ayu Purnama Diah Rahmanasari Didiek Sri Wiyono Diesya, Stephani Dwi Indah Maryanie Dwi Setyo Sulistyono Eko Pujiyanto Eko Supriyanto Ereika Arie Agassi Erliza, Ayu Euis Nurlathifah Evizal Abdul Kadir Fadlilah, Antika Adzary Sekar Fahma, Fakhrina Fakhrina Fahma Fakhrina Fahma Farid Ishartomo Fathin Kusumo Pramesti Pudjiantoro Fauziah Amelia Ananda Febri Muhammad Rachadian Fitri Purnamasari Frisca Pomalia Hanun, Ilza Athiyatamimy Hastuti, Tiwik Tri Hisjam, Muh Hisjam, Muh. Hisjam, Muhammad Ihwan Susila Jeehad Muhammad Joshua Vicky Kristiawan, Stefanus A. Levinia Dian Laraswati, Levinia Dian Louhenapessy, Bendjamin Lsa Aldira Hafidza Mahesa Jenar Maisyaroh, Anis Marhana, Laily Martha Widhi Dela Utami Maya Revanola Zainida Meidiana Faras Isnafitri Muh. Hisjam, Muh. Muhammad Hisjam Nabilah Nabilah Nancy Octyajati Natalianto, Yosua Naufal Ammar Novitria Arie Prabarini Nugraheni, Diyah Dwi Nur Atikah Nuryanto - P., Yogie Budi Pramesti, Nidya Yutie Pramono, Wakit Prasetyo, Hoedi Pratiwi, Ayu Priyandari , Yusuf Pujiyanto, Eko Rahmatullah, Hasan Ravi Ratnasari, Sintya Renny Rochani Resia Atsiila Restiannisa, Kinanti Rinanto, Andhy Rochani, Renny Roni Zakaria Roni Zakaria Raung Shamsuddin, Siti Mariyam Silvi Istiqomah Siti Mariyam Shamsuddin Sri Listia Rosa Supriyanto, Eko Wahyu Ani Maulidiyah Wardayanti, Ari Widi Hartono Yasmine Husna Arsyifa Yosua Natalianto Yudhistira, Rasyid Yuniaristanto Yuniaristanto Zakaria, Roni Zakariya, Roni