Article Per Year (5 Year)
p-Index From 2021 - 2026
4.447
P-Index
This Author published in this journals
All Journal Resona : Jurnal Ilmiah Pengabdian Masyarakat Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control AL-JAZARI JURNAL ILMIAH TEKNIK MESIN Techne : Jurnal Ilmiah Elektroteknika MITRA: Jurnal Pemberdayaan Masyarakat Jurnal Logistik Indonesia JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Majamecha IJIIS: International Journal of Informatics and Information Systems Abdimasku : Jurnal Pengabdian Masyarakat Industrika : Jurnal Ilmiah Teknik Industri Journal of Scientific Research, Education, and Technology RJOCS (Riau Journal of Computer Science) Jurnal Pengabdian Masyarakat Charitas Metris: Jurnal Sains dan Teknologi Prosiding Seminar Nasional Unimus Cylinder : Jurnal Ilmiah Teknik Mesin Prosiding Seminar Nasional Manajemen Industri dan Rantai Pasok
Marsellinus Bachtiar Wahju
Department Of Industrial Engineering, Faculty Of Bioscience, Technology, And Innovation Atma Jaya Catholic University Of Indonesia
Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences

Published : 35 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 35 Documents
Search

 1   2   3   4 
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.
Evaluasi Kepuasan Mahasiswa Teknik Industri Terhadap Kegiatan Praktikum Dengan Metode Servqual Christata, Bellachintya Reira; Sukwadi, Ronald; Bachtiar, Marsellinus; Kartawidjaja, Maria Angela
Industrika : Jurnal Ilmiah Teknik Industri Vol. 8 No. 1 (2024): Industrika: Jurnal Ilmiah Teknik Industri
Publisher : Fakultas Teknik Universitas Tulang Bawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37090/indstrk.v8i1.1183

Abstract

In the face of competition in the field of Education, universities are required to improve the quality of the learning process. The aspects included in the learning process are practicum activities. In the Industrial Engineering study program, there are several core practicums, one of which is the Integrated Industrial Engineering Practicum. This study aims to determine the quality of current PTIT practicum activities by measuring the level of satisfaction of students who take PTIT courses. The method used in measuring student satisfaction in this paper is the Service quality method (SERVQUAL). The SERVQUAL method is a method that pays attention to 5 dimensions of service quality, namely reliability, responsiveness, assurance, empathy, and tangible. This measurement is carried out to identify student expectations and perceptions from the five dimensions of Service Quality by looking at the gap value that occurs due to the mismatch between student expectations and perceptions. The data processed in this study was questionnaire data from 30 respondents. Before the analysis was carried out, data testing was carried out with validity and reality tests. The results of this study are dimensions that are not in accordance with student expectations, including tangible, assurance, and empathy dimensions, and those that are in accordance with student expectations are dimensions of reliability and responsiveness. Keywords: Practice, SERVQUAL, Students Satisfaction
IMPLEMENTATION OF HUE SATURATION INTENSITY (HSI) COLOR SPACE TRANSFORMATION ALGORITHM WITH RED, GREEN, BLUE (RGB) COLOR BRIGHTNESS IN ASSESSING TOMATO FRUIT MATURITY Yanto`, Budi; Maria Angela Kartawidjaja; Ronald Sukwadi; Marsellinus Bachtiar
RJOCS (Riau Journal of Computer Science) Vol. 9 No. 2 (2023): RJOCS (Riau Journal of Computer Science)
Publisher : Fakultas Ilmu Komputer, Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/rjocs.v9i2.2428

Abstract

Tomatoes, as a type of vegetable or fruit, are often susceptible to damage, making handling them a complex challenge. Distinguishing between fresh and damaged tomatoes is very important, considering the significant impact on nutritional value and economic aspects. Traditional approaches via visual inspection have proven to be less efficient and inconsistent in their detection accuracy. To overcome this challenge, the use of images is a vital solution for distinguishing ripe, half-ripe and unripe tomatoes. In this context, HSI (Hue, Saturation, Intensity) calculations are applied to measure RGB color and room transformations. Images are extracted in jpg format, saved as training data, and this method is implemented using the Python programming language and GUI interface design in MATLAB. The research results show the HSI value for each class, with the ripe tomato class having an average hue of 0.0051 – 0.026, saturation 0.1862 – 0.3291, and intensity 0.0975 – 0.7522. Half-ripe tomatoes have hue 0.0208 – 0.0848, saturation 0.1346 – 0.5746, and intensity 0.1056 – 0.4714, while immature tomatoes have hue 0.0174 – 0.0689, saturation 0.0474 – 0.2072, and intensity 0.0595 – 0.3203. The integration of the HSI algorithm steps with the RGB color space provides an additional dimension to color analysis, which has the potential to increase the accuracy of tomato ripeness detection.
Analysis of Fuel Supply Control (Palm Shell) Using EOQ Method in Pt. Charoen Pokphand Indonesia Tbk Abdul Rasyid; Widawati, Enny; Bachtiar W , Marsellinus
Journal of Scientific Research, Education, and Technology (JSRET) Vol. 1 No. 2 (2022): Vol. 1 No. 2 2022
Publisher : Kirana Publisher (KNPub)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (964.382 KB) | DOI: 10.58526/jsret.v1i2.29

Abstract

PT. Charoen Pokphand Indonesia Tbk. (Gorontalo) is still experiencing problems in managing fuel supply where the company often experiences a lack of inventory that hinders the production process. The company also experienced excess inventory, causing storage costs to rise. For this reason, companies need to exercise inventory control. One of the analytical tools that can be used to control inventory is the "Economic Order Quantity" (EOQ). From the calculation results, it was found that the optimal number of fuel supply purchases from palm oil shells using the EOQ method is 352 tons with a purchase frequency of 3 times in one period (1 year) so that the company can save fuel procurement costs. . The total inventory cost of raw materials with an EOQ of Rp. 32,845,640 while the cost incurred by the company without using EOQ amounted to Rp. 34,731,000. The savings that can be made by the company is Rp. 1,885,360 with a Reorder Point of 81.9 tonnes and a total safety stock of 241 tonnes.
Certainty Factor Method Analysis for Identification of Covid-19 Virus Accuracy Hayadi, B Herawan; Widawati, Enny; Bachtiar, Marsellinus; Tambunan, Fazli Nugraha
International Journal of Informatics and Information Systems Vol 6, No 1: January 2023
Publisher : International Journal of Informatics and Information Systems

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47738/ijiis.v6i1.156

Abstract

Corona virus or often called COVID-19 is a virus caused by SARS CoV 2, where the incident was uploaded in the world of health or we often call WHO. Even the World Health Organization (WHO) has declared that the corona virus outbreak is a Public Health Emergency of International Concern (PHEIC) or an international public health emergency. Not only has an impact on health, but this virus outbreak has also had a major impact in various sectors such as disrupting the country's economy, disrupting the education process and so on. This impact is caused by the very fast spread of the virus. Therefore, the author will analyze the level of accuracy in the covid-19 virus by using the certainty method model which aims to make it easier for local governments to monitor the spread of the COVID-19 virus and can determine future policies so that the spread is not more easily exposed to the community. this method will produce data analysis and diagnoses regarding identifying the covid-19 virus with results in the form of accuracy, namely someone is indicated as COVID-19 POSITIVE.
METODE UJI DISOLVED GAS ANALYSIS METODE ROGERS RATIO DENGAN SIMULASI MATLAB Kartadinata, V. Budi; Putera, Michael Deni Perdana; Wahju, Marsellinus Bachtiar; Bachri, Karel Octavianus
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 8 No 1 (2022): APRIL 2022
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v8i1.3909

Abstract

Transformator atau Trafo adalah sebuah alat listrik statis yang berfungsi mentranfromasikan level tegangan dari tinggi ke rendah atau sebaliknya. Trafo dapat mengubah tegangan arus bolak-balik. Trafo sangat penting dalam kelangsungan listrik pada Pembangkit Listrik Tenaga Gas dan Uap (PLTGU) Kinerja Trafo harus semaksimal mungkin karena memiliki peranan vital pada pembangkitan listrik. Trafo yang kerja terus menerus jika sudah bertahun-tahun pasti kualitas dari Trafo akan menurun dan jika dibiarkan bisa menjadi rusak. Maka dari itu diperlukan perawatan dan pemeliharaan secara berkala serta penerapan pengujian pada trafo sehingga kinerjanya stabil. Ada beberapa metode yaitu: Tan Delta, DFR, Insulation Resistance, Polarity Index, Winding Resistance, Turn Ratio, DGA, Furan Test, Degree Polymerization, SFRA, Insulation Resistance Tester. Furan Test atau tes kertas isolator pada transformator. Dari cara tersebut, dapat diketahui apa yang harus dilakukan terhadap trafo tersebut, seperti memperbaikinya atau menggantinya dengan yang baru. Tujuan dari penelitian ini adalah untuk mensimulasikan jumlah gas dan kesalahan pada trafo dari kandungan gas yang didapat, dengan metode Rogers Ratio. Simulasi ini menggunakan aplikasi bernama MATLAB 2020. Jumlah gas yang berupa angka dari 0 sampai 5 dari 6 macam gas akan menampilkan beberapa macam fault dari Transformator. Pada simulasi ini akan menunjukan fault dari transformator dari jumlah gas yang didapat.
UPAYA PERBAIKAN SISTEM MONITORING PERSEDIAAN DENGAN PERANCANGAN ENTITY RELATIONSHIP DIAGRAM (ERD) SEBAGAI DASAR PERANCANGAN STUDI KASUS DI UD "X" Bachtiar, Marsellinus; Alvinson, Gregorius; Bachri, Karel Octavianus
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 8 No 1 (2022): APRIL 2022
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v8i1.3910

Abstract

Pada era Industry 4.0, perusahaan sudah menerapkan analisa perancangan sistem informasi, karena teknologi informasi ini merupakan salah satu teknologi yang tentunya berkembang sampai saat ini. Penggunaan data dalam praktek bisnis perusahaan merupakan suatu persyaratan – terutama pengelolaan persediaan bagi perusahaan dagang atau perusahaan manufaktur. Tujuan dari penulisan paper ini adalah perancangan pondasi untuk pengelolaan data persediaan. Tujuan akhir nya adalah adanya system informasi yang mampu mengintegrasikan berbagai proses bisnis di UD.X – sebagai UKMM sehingga dapat beroperasi secara efisien. Permasalahan saat ini adalah adanya kesalahan pencatatan yang berakibat pada kesulitan monitoring persediaan secara akurat. Pencatatan yang masih menggunakan system manual memunculkan potensi inefisiensi pelaporan , dari sisi waktu , akurasi dan validasi. Perancangan system menggunakan metodologi SDLC (System Development Life Cycle). Dalam perancangan system database digunakan ERD (Entity Relationship Diagram). Hasil dari perancangan adalah sampai dengan perancangan ERD sebagai landasan system database untuk mendukung sistem informasi persediaan.
Penerapan Vessel Monitoring System untuk Kapal-Kapal Ikan Bachtiar, Marsellinus
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 8 No 2 (2022): OKTOBER 2022
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v8i2.4120

Abstract

Vessel monitoring system merupakan system monitoring untuk kapal-kapal penangkap. Tujuan dari monitoring system ini adalah untuk memantau pergerakan area perikanan. Berdasarkan situs resmi Kominfo VMS disebut juga Sistem Pemantauan Kapal Perikanan – merupakan system pemantauan berbasis satelit untuk mengetahui pergerakan pergerakan dn aktivitas kapal perikanan. Tulisan ini bertujuan memahami esensi VMS dan arah pengembangan terutama dari sisi system untuk kebutuhan pengendalian dan perencanaan. Pemahaman atas pengawasan aktifitas penangkapan ikan oleh Kementerian Kelautan dan Perikanan menjadi dasar dalam memahami VMS dalam konteks nasional, termasuk didalam nya pengaturan perijinan, wilayah tangkap, alat tangkap, waktu (musim) dan kuota dalam penangkapan ikan. Hasil dari tulisan ini adalah pemahaman mendasar dari fungsi VMS dalam upaya memonitor dan pengawasan – serta usulan pengembangan terutama dari integrasi data untuk ujuan analitis yang menghasilkan perencanaan dan pengambilan keputusan yang terukur dan akurat
Peluang Penerapan Desain Thinking di Industri Maritim Studi Kasus : Pencarian Jasa Docking Bachtiar W, Marsellinus
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 10 No 1 (2024): APRIL 2024
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v10i1.5491

Abstract

The ship maintenance industry is one of the maritime sectors that supports the economy, where ships are required by regulations to dry dock periodically for repairs and maintenance to ensure their seaworthiness. From the shipowner's perspective, the need is to find a dry dock that meets both technical and economic requirements. Innovations in business processes and drydocking business models have seen various improvements, particularly in the use of technology, automation, and operational efficiency. The implementation of Design Thinking in the maritime industry is widely open, although there are challenges in its adoption, especially due to entrenched business practices and the complexity of meeting dry dock requirements. The results obtained from the observation of the implementation efforts indicate that there are opportunities for the application of new innovations in the maritime industry. This is attributed to the openness towards new technologies and business processes, especially among the next-generation leaders of companies, who belong to the millennial or Gen Z cohorts.
Design and Performance of Solar-Powered Surveillance Robot for Agriculture Application Dewi, Tresna; Sukwadi, Ronald; Wahju, Marsellinus Bachtiar
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol. 8, No. 3, August 2023
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/kinetik.v8i3.1722

Abstract

Agriculture can benefit from robotics technology to overcome the drawback of limited human labor working in this sector. One of the robot applications in agriculture is a surveillance robot to monitor the condition. This paper describes a surveillance robot that is powered by a capacitor bank charged by a mini solar panel. The solar-powered robot is well-suited for deployment in open agricultural areas in Indonesia, where the irradiance is high. This potential is excellent for generating electricity and charging electric vehicles, such as those used in agriculture. The surveillance robot developed and tested in this study has been successfully deployed in an agriculture-like setting with all-terrain contours and the capacity to avoid obstacles. During high irradiance sunny weather, the shortest charging time was 2 hours. Hence, the proposed technology is effective for designing a surveillance robot for agricultural applications.
Co-Authors ., Cassidy Abdul Rasyid Adrian, Bryan Agustinus Silalahi Alvinson, Gregorius Andre Sugioko Angger Bagus Prasetiyo Archi Kun Cahyo Utomo Assagaf, Iman Pradana A B. Herawan Hayadi Bellachintya Reira Christata Budi Triyono Carlos Yohan Rafavy Cassidy Cassidy Christine Natalia Dikky Kusuma Wijaya Eddy Wijanto Enny Widawati Enny Widiawati Fisika Prasetyo Putra Frisca Wenlicia Gregorius Alvinson Hadi Susanto Hadi Sutanto Hadi Sutanto Hafyyan, Iqbal Hotma Antoni Hutahaean Istighfari, Nurrahman Julian Luke Pranoto Karel Bachri Karel Octavianus Bachri Kartadinata, Budi Kartawidjaya, Maria Angela Klarissa Lukas Lukas Maria Angela Kartawidjaja Mario Cordelos Bisay Masbin Dahlan Michael Deni Perdana Putera Muh. Nurul Haq Amaluddin Nguyen Thi Bich , Thu Novi Misgi P. Adi Novi Misgi Prabowo Adi Nugroho, Veronica Tirza Prakosa, Taji Harya Putera, Michael Deni Perdana Riana Magdalena Silitonga Ronald Sukwadi Ronald Sukwadi Ronald Sukwadi setiawan, Dibyo Siagian, Vebryna Shaputri Stanislaus Suryadi Uyanto Stephanus Ivan Goenawan Sulfiana, Enni Taji Harya Prakosa Tambunan, Fazli Nugraha Tresna Dewi Trifenaus Prabu Hidayat Vivi Triyanti Wibawa Prasetya Wijaya, Dikky Kusuma YANTO YANTO Yanto Yanto Yanto`, Budi Yulia Rosa Yurni Oktarina