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All Journal Indonesian Journal of Business and Entrepreneurship (IJBE) Resona : Jurnal Ilmiah Pengabdian Masyarakat JISO : Journal of Industrial and Systems Optimization Jurnal Teknologi dan Manajemen Industri Terapan Blend Sains Jurnal Teknik Jurnal Pengabdian Masyarakat Charitas Metris: Jurnal Sains dan Teknologi Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Widya Teknik
Hotma Antoni Hutahaean
Program Studi Teknik Industri, Fakultas Biosains, Teknologi Dan Inovasi, Universitas Katolik Indonesia Atma Jaya
Aerospace Engineering 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 Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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Penggunaan Metode Algoritma Craft dan Blocplan untuk Perbaikan Tata Letak Fasilitas Lantai Produksi pada Industri Sparepart Sepeda Motor Leonardo Leonardo; Hotma Antoni Hutahaean
Jurnal METRIS Vol. 15 No. 01 (2014): 2014
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

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

Abstract

Performance and productivity of production line system are very influenced by facility layout planning.Facilities composition which is appropriate with flow of materials between departments, certainly wouldsustain the continuity of the system. PT. X is one of the subsidiaries of PT. Astra Otoparts Tbk. whichmanufactures motorcycle chains. Composition of the current layout facilities on the 1st Plant has not fullyoptimized well and indeed has a potential possibility to be developed further in the future. This statement issupported from the result of existing MHPS which gives Rp 1,047,678.49 for total cost of material handling,463.1 meters for total distance, and 1,617.24 minutes for total time of material movements. Also, the totalarea of empty spaces that can be utilized by the company in the current layout is only 89.74 m2. As for thepurposes of this research are: analyzing the performance of current layout, developing new layout designs toimprove the current one, and comparing the current with proposed improvement layouts. The process ofdesigning proposed layouts is done by using improvement-based algorithm (CRAFT) and hybrid/compositealgorithm (BLOCPLAN) that both of the algorithms need same inputs, which are: current facility layout andthe flow of material. Based from the results of MHPS calculation for both proposed layouts, show that layoutfrom BLOCPLAN algorithm gives maximal reduction to the total cost of material handling so that theamounts will be decreased to Rp 1,022,419.91 (reducing 2.4% from total cost of current layout), 434.62meters for total distance (reducing 6.2%), and 1,506.23 minutes for total time of material movements(reducing 6.86%). As for the total area of empty spaces, BLOCPLAN layout gives 110.74 m2 (23.4%) to beminimized than the current layout.
Pendampingan Pengembangan Umkm Melalui Pemanfaatan Sumber Daya Alam Dan Pemberdayaan Sumber Daya Manusia Di Desa Ponggang Kabupaten Subang Widawati, Enny; Sugioko, Andre; Bachtiar Wahju, Marsellinus; Sukwadi, Ronald; Antoni Hutahaean, Hotma; Triyanti, Vivi; Nguyen Thi Bich , Thu
Jurnal Pengabdian Masyarakat Charitas Vol. 3 No. 01 (2023): Jurnal Pengabdian Masyarakat Charitas Juni 2023
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/charitas.v3i01.4657

Abstract

Micro, Small, and Medium Enterprises (MSMEs) are vital business units in developing and growing the Indonesian economy. The people of Ponggang Village have the potential for their naturalresources, which can be processed to make a product that can make a steady income from MSMEs. This community service activity aims to open up insights and share the importance of entrepreneurship from an early age. The results obtained from this community service include the packaging of Ponggang Village MSME products with a unique design that has an element of identity from Ponggang Village MSME products, namely the "Pongs" product. From this packaging development, the product is hoped to have more value in the local market.
Optimasi Panjang Mainroll pada Industri Pulp & Paper untuk Kebutuhan Kertas HVS dengan Integer Programming Silalahi, Agustinus; Hidayat, Trifenaus Prabu; Hutahaean, Hotma Antoni; Suwasto, Febian
Metris: Jurnal Sains dan Teknologi Vol. 25 No. 02 (2024): Desember
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/metris.v25i02.5955

Abstract

PT. XYZ is a company engaged in the production of paper and pulp. These are two products are interrelated because to produce paper, raw materials are neededin the form of pulp. And often the paper production in the factory is excessive. This study aims to determine the optimal mainroll length according to demand so that overproduction will be minimized. The approach used is Integer Programming with the Branch and Bound method, where previously obtained combinations of possible paper arrangements on the mainroll with a maximum length of 80 km and a the width of 8,5 m. based on the optimal calculation results for the December 2022 production period, the mainroll length produced is 139,23 km which produced 14.891 reams for A4 paper, 10.539 reams for F4 paper and 10.239 reams for Q4 paper. The excess production of each type of paper was 0.34 %, 0,02 % dan 1,82 %, respectively. While the total overproduction for all types of paper sizes was 0,67 %. Production results in December 2022, overproduction of A4, F4 and Q4 were 1,15 %, 3,26 % and 2,92 %, respectively. While the total overproduction for all types of paper sizes was 2,28 %. The standart deviation of the calculation of real conditions is 1,13%, meaning that the deviation of excess production in real conditions is greater.
Usulan Konseptual Sistem Distribusi Cross Docking untuk Meminimumkan Biaya Distribusi pada Industri Retail Talia Kasih Putri; Hotma Antoni Hutahaean
Widya Teknik Vol. 15 No. 1 (2016)
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v15i1.1194

Abstract

For retail industry, the distribution system is the main challenge that must be faced by the company. Choosing the right strategy will save unnecessary costs and reduce distribution time. The distribution time is needed to get products to the warehouse and to get them ready for shipping at the distribution centre. If the distribution time is felt to be too long, it might add costs. The objective of the study was to design a conceptual cross docking distribution system to minimize distribution costs and reduce distribution time by focusing on the product distribution inside the distribution center until the products are delivered to each outlet. Designing a conceptual cross docking distribution system consists of transportation costs, retain costs, the amoun to truck necessities, truck schedules, and the safety stock planning. Results from our calculation showed that the company’s distribution costs werereduced. That is, the distribution costs were down by 62% compared to the current distribution costs. Based on the result, it is concluded that the conceptual cross docking distribution system designed in the present research successfully answered the existing problems. Kata kunci : Cross Docking, Truck Scheduling, Simulation
Prioritas Perbaikan Aplikasi M-commerce dengan Importance Performance Matrix Analysis (IPMA) Hutahaean, Hotma Antoni; Silalahi, Agustinus; Prabu Hidayat, Trifenaus; Magdalena, Maria
Metris: Jurnal Sains dan Teknologi Vol. 26 No. 01 (2025): Juni
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/metris.v26i01.6782

Abstract

The utilization of mobile commerce (m-commerce) applications is closely linked to the examination of consumer loyalty. A substantial body of research underscores the significance of m-commerce services and user acceptance in enhancing customer retention. This study aims to investigate the correlation between usability and user loyalty within m-commerce platforms by applying Importance-Performance Matrix Analysis (IPMA) to identify critical areas for improvement. The research sample comprised 149 users of m-commerce applications. Findings from the IPMA indicate that the key areas for enhancement in terms of (1) loyalty include users’ ability to exercise control, the simplicity of control mechanisms, and overall ease of use; while for (2) usability, the priority aspects for improvement are error notification features, accuracy, and completeness of the application’s functionalities
Sosialisasi Pemanfaatan Aplikasi Kuesioner ATD Dan Likert Untuk Penelitian Survei Kuantitatif Goenawan, Stephanus Ivan; Vivi Triyanti; Hutahaean, Hotma Antoni; Wibawa Prasetya; silalahi, Agustinus
Jurnal Pengabdian Masyarakat Charitas Vol. 4 No. 02 (2024): Jurnal Pengabdian Masyarakat Charitas
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/charitas.v4i02.6014

Abstract

Using technology in quantitative research is increasingly important to improve the efficiency and accuracy of data collection. This community service activity aims to socialize the use of questionnaire applications based on the Data Weigher Analysis (DWA) and Likert methods that can be used in quantitative survey research. Socialization is carried out to researchers, academics, and students involved in survey-based research to facilitate understanding and skills in designing, distributing, and analyzing questionnaires digitally. Through this activity, participants are given direct training on using the application, the advantages of the DWAand Likert methods in measuring quantity values into quality, and efficient and accurate data processing. The evaluation results showed that participants had increased understanding and skills in utilizing the questionnaire application, which is expected to support more effective quantitative research in the future. Thus, this activity contributes to increasing researchers' capacity to conduct modern and technologybased quantitative surveys.
Engineering Fette320 Pratama, Stephen; Hutahaean, Hotma Antoni
Metris: Jurnal Sains dan Teknologi Vol. 18 No. 01 (2017): Juni
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

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Abstract

This Research in intended the Effect of manufactures electrical wiring low voltage. A problem that often occurs on the floor of the factory is the production of a quality mismatch on the cable NYM 2 x 1.5 mm2 will cause the occurrence of reduced demand from consumers and would harm consumers when menggunakanya. Bad results on the wire can not disconnect from the production process because the engine is one of the very important factor who fought in the quality of the wiring in the produce. As a result, the value of the isoaltor and the koduktor a cable can be a good or a bad fit with the existing machine settings. Usually many companies understand the appropriate combination in getting optimal results from the machine in karenakan costs incurred to figure it out pretty expensive. This would result in losses for the company in an amount large enough because the company would have difficulty fulfilling customer requests. For the optimal settings for analysis identifying the cable NYM using taguchi methods, alphabets experiment design and response Surface so that it can be done the calculation of total to quality cable compared with waste that should be the responsibility of the company due to the cable does not meet the specifications in the set (SNI). To conduct the process of identifying the need to know the data cable-owned waste terytama on cable cable NYM bestseller that is then compared with the waste before implementation to do the settings in the machine. Analysis to get the best quality on cable are rated based on a test of insulator using insulator tester and the conductor using the double bridge tester. From the results of the calculation of the optimum settings for it is known that machines with Speed settings pull 41 m/s Speed, Filling 33 m/s, and Speed Sheeting amounting to 29 m/s and the waste is reduced after implementation i.e. copper be 1458 Kg and PVC became 89,225 Kg in July 2016 which means tejadi decrease 41,375% in copper and 41,186% in PVC
Pendekatan Konseptual Lean Agile untuk Perbaikan Sistem Produksi pada Perusahaan Konveksi (Studi Kasus CV. XYZ) Hutahaean, Hotma Antoni; Purnawan, Brian; Elvina, Jacqueline
Metris: Jurnal Sains dan Teknologi Vol. 17 No. 01 (2016): Juni
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

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Abstract

This study discusses the proposed improvements to the production system using lean agile supply chain approach. In the middle’s company, one of which is the problem that the turnaround time is too long or waiting waste and defect waste. Under the existing conditions, the company's production system to improve production speed in response to rapid changes in consumer interest and improve product quality. There are 3 stages used in the Lean Agile approach that are phase planning, execution, and delivery. The data obtained from the company necessary, through observation, and through direct measurement. Based on the research that has been made known that there are four kinds of defects that are CTQ (Critical to Quality), four types of defects are defects hollow, fibrous defect, defect loose stitches, and gross defects / stains. In the planning process we already know what the model variant is desired by consumers is a model school crest motif symbol, foundations, public, and school patron, besides the application of a pull system and didapti empowerment of teams who want to make changes repairs.Proposed improvements are the main target of this research, which at this stage 5S approach work attitude, the manufacture of tools to support performance changes, as inputting the manufacture of flexible software, and implementation of design improvements that have been made into the main ingredients in providing a solution to improve the speed work and minimize the occurrence of defects in order to improve quality.
Penjadwalan staf PT. Adi Sarana Logistik Divisi Outbound Unit Picker dan Dispatcher berdasarkan Minimisasi Jam lembur Silalahi, Agustinus; Heryanto, Timotius; Hidayat, Trifenaus Prabu; Hutahaean, Hotma Antoni; Indriati, Kumala
Metris: Jurnal Sains dan Teknologi Vol. 24 No. 02 (2023): Desember
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/metris.v24i02.4733

Abstract

PT. Adi Sarana Logistik (PT ASL) is a company engaged in the warehouse and logistics sector, which delivers many packages daily. Previously, manual scheduling took a long time, and there were violations of working hours regulations. The research was conducted at the outbound division, in picker and dispatcher units for leaders and operational staff, where the number of operational staff varies each month, so there are four schedules were produced where this study aims to minimize overtime hours for each level of staffs and units by Goal Programming and Binary Integer Programming which are completed with LINGO 18.0. The results of this study have been implemented in the company, where the schedule only takes a few seconds, while previously, it took 1-2 days. The scheduling carried out in this study is in October 2022, where all employees for leaders and staff in each unit have 22 working days, nine days off, 1 hour of overtime, and follow the rules.
Persepsi Pengguna Sebagai Dasar Pengembangan Model Usability Aplikasi Mobile Commerce Hutahaean, Hotma Antoni; silalahi, Agustinus; Prabu Hidayat, Trifenaus; Sukwadi, Ronald; Kartawidjaja, Maria Angela
Metris: Jurnal Sains dan Teknologi Vol. 25 No. 01 (2024): Juni
Publisher : Prodi Teknik Industri, Fakultas Teknik - Universitas Katolik Indonesia Atma Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/metris.v25i01.5451

Abstract

The intense competition between developers, resulting in efforts to determine users' needs, is increasingly important. Usability An application can affect the continuity of application use. In this study, the user's loyalty is also used to analyze usability. This study examines user perceptions about user interaction characteristics when interacting with the mobile commerce application and considers users' loyalty. This research is essential to find out the needs of users of a mobile commerce application, which can be input to the developer in the design stage. This study uses 149 respondents' online shopping transactions in Jabadetabek and outside Jabodetabek, Indonesia. Data were analyzed using the Structural Equation Modeling (SEM) model. The results showed that users' perception of effectiveness, satisfaction, and learning influenced usability. This model can explain 42.6% of the user's usability variation when using it. This model can explain the usability of the Mobile Commerce application quite well. As a practical implication, this study shows the factors that support the characteristics of user interaction and application systems at the stage of defining the requirements for developing mobile commerce applications.
Co-Authors Achmad Chaerul Muslim Agustinus Silalahi Andre Sugioko Aretha Jerika Halimin Arif Suryadi Brian Purnawan Christina Elvina, Jacqueline Enny Widawati Esa Pratiwi Heryanto, Timotius Jacqueline Elvina Kumala Indriati Leonardo Leonardo Maria Angela Kartawidjaja Maria Magdalena Maria Magdalena Wahyuni Inderawati Marsellinus Bachtiar Wahju Melina Hermawan Nguyen Thi Bich , Thu Nguyen Thi Bich Thu Pratama, Stephen Purnawan, Brian Riana Magdalena Silitonga Rini Alfatiyah Ronald Sukwadi Ronald Sukwadi Saddam Rasyidin Alfaruk Sofian Bastuti Stephanus Ivan Goenawan Stephen Aprius Sutresno Stephen Pratama Suwasto, Febian Talia Kasih Putri Trifenaus Prabu Hidayat Vivi Triyanti Wibawa Prasetya Yann-Mey Yee Yohanes Anton Nugroho Yudi Maulana