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All Journal Jurnal Informatika dan Teknik Elektro Terapan Prosiding Seminar Nasional Teknoka Practice of Fashion and Textile Education Journal BULLET : Jurnal Multidisiplin Ilmu
Rachmah Nanda Kartika
Politeknik Negeri Jakarta
Arts Humanities Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Physics

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Pengukuran Usability Pada E-Learning Politeknik Negeri Jakarta Rachmah Nanda Kartika; Emmidia Djonaedi
Prosiding Seminar Nasional Teknoka Vol 5 (2020): Prosiding Seminar Nasional Teknoka ke - 5
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

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Abstract

Covid-19 has impacted human activities around the world, including education. Teachingandlearning activities that were originally conducted face-to-face have turned into remote teaching andlearning activities or online lectures. To support the government's ef orts to prevent Covid-19 fromspreading further, the Jakarta State Polytechnic conducts its lectures using PNJ's E-learning media. Learning media systems can be considered reliable if they can fulfill user needs, such as the ease of usingtools in E-learning. E learning must be able to be used in both theoretical and practical subjects. Theresearch targets for this study are graphic engineering, packaging printing industry technology, mechanical engineering, building construction, and energy conversion. However, these practical learningcompetencies cannot be achieved as conducted on the of line lecture. To ensure that the teaching andlearning activities using PNJ E-learning can run ef ectively, we need to measure its usability. In this study, we use USE questionnaire tool as usability measurement. The research conducted on 150 respondents showed that the level of usability in PNJ e-learning was 0,609 this figure is included in the category of goodusability level. However, this value is still within the minimun score criteria for the good category. TheValue for each variable, namely the uselfulness variable of 71.4%, the easy of use variable of 72.8%, theeasy of learning variable of 48.25% and the satisfaction of 51.2% of the long distance learning process. theory and practice using E-learning,. E-learning system's components that are improved are thebigbluebutton, attendance, login, additional notification features for student assignments, and attendance.
Penggunaan FMEA Dalam Mengindentifikasi Resiko Kegagalan Pada Proses Produksi Cetak Blok Kalender (Studi Kasus : PT. XYZ) Rachmah Nanda Kartika; Nafiah Ariq Hidayah; Muadzah
BULLET : Jurnal Multidisiplin Ilmu Vol. 1 No. 06 (2022): BULLET : Jurnal Multidisiplin Ilmu
Publisher : CV. Multi Kreasi Media

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Abstract

PT. XYZ is one of the printing companies in Jakarta. The company produces graphic products such as smart cards, the Qur'an, packaging, calendars, books, and security documents. The manufacturing production process always strives for no defective products. To minimize production failures that will occur, a system that supervises product quality is needed, called a quality control system. Printing problems that occur in PT. XYZ on the four-vel calendar product has 4 types of defects namely misregister, striped color, set-off, and dot gain. The product data for calendar block printing products in 2022 is 6500 pcs. The number of defects is high. So that the problem needs to be immediately corrected and analyzed accurately. The method used in this study was FMEA. This method identifies problems that occur in the field by identifying production factors and determining the severity of the problem through the Risk Priority Number (RPN) value. The higher the RPN value, the bigger the problem. If the bigger the problem, then the risk of the problem must be prioritized to be overcome.  Based on the percentage of each type of printing defect that occurs in PT. XYZ has the most product defects is the striped color on the vel 4 block mold. The identification results based on the three highest RPN values are caused by low-speed engines and often die, the rollers are old and do not have a densitometer measuring instrument. The main risk control measures that the company can take, namely overhaul, buying measuring instruments to replace the rollers. Then after repairs a check sheet is required.
ANALISIS DETEKSI TEPI PADA PEMINDAI DOKUMEN MENGGUNAKAN KERTAS THERMAL BERBASIS PYTHON IDE Yoga Putra Pratama; Rachmah Nanda Kartika; Pilar Febry Buwono; Muamar Abid Rabbani
Jurnal Informatika dan Teknik Elektro Terapan Vol 12, No 3 (2024)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v12i3.4917

Abstract

Dokumen merupakan salah satu bagian penting dalam berbagai proses, saat ini dokumen lebih banyak dalam bentuk digital dikarenakan kertas dapat mengalami penurunan kualitas seiring berjalannya waktu. Metode yang digunakan adalah metode kualitatif dengan menggunakan Bahasa pemrograman python dan sampel uji coba diberbagai kondisi dan hasil dari ujicoba ini adalah berupa deteksi tepi pada dokumen. Diharapkan hasil dari penelitian ini dapat dikembangkan dengan melakukan perbaikan kontur pada bagian gambar
SUSTAINABLE DYEING OF TEXTILES USING TOMATO WASTE EXTRACTS: INFLUENCE OF FESO₄ MORDANT ON COLOR QUALITY Fadiyah Ayu Rahmawati; Emmidia Djonaedi; Rachmah Nanda Kartika
Practice of Fashion and Textile Education Journal Vol. 5 No. 2 (2025): Practice of Fashion and Textile Education Journal
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/pftj.v5i2.56778

Abstract

The use of tomato waste as an effort to reduce the accumulation of organic waste and environmental pollution due to textile dyeing requires mordantt material as a color fixer. This study aims to analyze the effectiveness of iron Fe(SO₄) mordantt in dyeing cotton fabrics using natural dyes from tomato waste extract. The research was carried out by an experimental method, namely by dyeing textiles in the form of cotton cloth with dyeing techniques using the results of tomato waste extracts with variations in mordantt iron concentrations, namely 0%, 2%, 5%, and 7%. The staining results were analyzed using a spectrodensitometer to measure the CIEL*a*b* value and test the color fastness to light. The results showed that 7% iron mordant produced the most intense red-yellow color with an L* value of 64.38, an a* value of 28.7, and a b* value of 51.22. The staining results with a 7% iron mordantt had a very good color fade resistance value (scale 4-5), while the sample without a mordant had a very poor fade resistance (ΔE=25.19). Iron mordant Fe(SO₄) has been proven to have good effectiveness in producing more intense colors in fabric dyeing results and increasing color fastness in textile dyeing results with tomato waste extract.
Co-Authors Emmidia Djonaedi Fadiyah Ayu Rahmawati Muadzah Muamar Abid Rabbani Nafiah Ariq Hidayah Pilar Febry Buwono Yoga Putra Pratama