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All Journal JURNAL ELEKTRO Jurnal Ampere Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri JRST (Jurnal Riset Sains dan Teknologi) Media Ilmu Kesehatan TESLA: Jurnal Teknik Elektro Jurnal Ilmu dan Teknologi Kesehatan Jurnal Analis Medika Biosains (JAMBS) TEKNIKA Jurnal Kridatama Sains dan Teknologi Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Indonesian Journal of Electrical Engineering and Computer Science Indonesian Journal of Computing, Engineering, and Design Jurnal Bakti Masyarakat Indonesia Jurnal Teslink : Teknik Sipil dan Lingkungan Journal of Servite Walisongo Journal of Information Technology Jurnal Pendidikan dan Teknologi Indonesia JURNAL PERMADI: PERANCANGAN, MANUFAKTUR, MATERIAL DAN ENERGI Jurnal Teknik Sipil The International Journal of Education Management and Sociology ATHENA: Journal of Social Culture and Society Jurnal Rekayasa elektrika Jurnal Pengabdian Masyarakat Charitas Cylinder : Jurnal Ilmiah Teknik Mesin Jurnal Serina Abdimas
Wijayanti, Linda
Universitas Katolik Indonesia Atma Jaya
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Relationship Between Results of Genexpert RT-PCR and Erythrocyte Sedimentation Rate in Suspected Tuberculosis Patients Listiyowati, Tanti; Wardani, Dita Pratiwi Kusuma; Sudarsono, Tantri Analisawati; Wijayanti, Linda
jitek Vol 10 No 2 (2023): Maret 2023
Publisher : Poltekkes Kemenkes Jakarta III

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32668/jitek.v10i2.1078

Abstract

Pulmonary tuberculosis (TB) is an infectious disease that attacks the lungs and is caused by the bacterium Mycobacterium tuberculosis. The GeneXpert RT-PCR examination (Xpert MTB / RIF) is a development of a diagnostic tool that can automatically detect the presence of Mycobacterium tuberculosis (MTB) by molecular examination and can be used to detect MTB resistance to rifampicin. Erythrocyte sedimentation rate (ESR) is a test used to determine the rate at which erythrocytes settle in the blood. The purpose of this study was to determine the relationship between GeneXpert RT-PCR results and ESR in suspected tuberculosis patients. This research uses a cross-sectional study. The sample used in this study were 56 new suspected TB patients who had never been treated for ATD and underwent GeneXpert RT-PCR examination. Sampling was carried out by purposive sampling with the TCM Rif Sen group and negative results. A total of 27 patients (96.4%) with Rif Sen's GeneXpert RT-PCR results had high ESR values. 15 patients (53.6%) with negative GeneXpert RT-PCR results had normal ESR values. The results of the Chi Square test (X2) show that p-value = 0.000 OR = 0.032. There is a significant relationship between GeneXpert and ESR values ​​in suspected tuberculosis
Pengaruh Hemolisis Terhadap Nilai Trombosit Dengan Menggunakan Metode Direct Counting Nugrahena, Nurmalita Putri; Sudarsono, Tantri Analisawati; Wijayanti, Linda
Jurnal Analis Medika Biosains (JAMBS) Vol 8, No 2 (2021): JURNAL ANALIS MEDIKA BIOSAINS (JAMBS)
Publisher : Poltekkes Kemenkes Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32807/jambs.v8i2.228

Abstract

Hemolisis yaitu pecahnya sel darah merah dan keluarnya hemoglobin ke plasma. Hemolisis dapat terjadi secara in vitro dan in vivo. Sampel yang hemolisis dapat mempengaruhi hasil pemeriksaan laboratorium yang dapat menyebabkan kesalahan diagnosis, terapi dan prevensi. Tujuan penelitian ini adalah untuk melihat pengaruh hemolisis terhadap nilai trombosit dengan menggunakan metode penghitungan serta penilaian trombosit dari sampel darah yang tidak lisis dan dilisiskan secara in vitro. Penelitian ini dilakukan secara eksperimental pada bulan Juli 2020 di Laboratorium Patologi Klinik Fakultas Kedokteran Universitas Muhammadiyah Purwokerto. Teknik pengambilan sampel dilakukan secara purposive sampling sebanyak 14 sampel.Perhitungan nilai trombosit dilakukan menggunakan metode penghitungan langsung.  
PENGUKURAN BACKUP TIME UNINTERRUPTIBLE POWER SUPPLY UNTUK PENENTUAN KAPASITAS BATERAI VRLA Jong, Susanto; Melisa Mulyadi; Wijayanti, Linda
Jurnal Elektro Vol 18 No 1 (2025): Jurnal Elektro: April 2025
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v18i1.6264

Abstract

A battery is a device that stores power in an Uninterruptible Power Supply (UPS) system. The most common type of UPS battery found today is Valve Regulated Lead Acid (VRLA). So that the UPS can work optimally according to its capacity and backup time, it is necessary to determine the battery capacity. In this research, the capacity of the VRLA battery on a particular UPS was determined based on direct testing and based on calculations. VRLA battery capacity calculations refer to the UPS and battery datasheet. The calculation stage starts from calculating the current and battery power used according to the load power absorbed by the UPS and referring to the table of constant current discharge and constant power discharge characteristics. Determining battery capacity based on testing is done by measuring the backup time of the UPS. The calculation results and test results directly show that there is a difference in backup time because the battery used is an old stock battery. The research results also prove that determining battery capacity by calculation can ensure that the battery capacity is more appropriate or not too large so it is more economical.
ANALISA PEMECAHAN BEBAN PADA PENYULANG SUBARU GARDU INDUK KENTEN PALEMBANG UNTUK MENURUNKAN JATUH TEGANGAN Azis, Abdul; Wijayanti, Linda; Mulyadi, Melisa
TEKNIKA: Jurnal Teknik Vol 10 No 2 (2023)
Publisher : Universitas IBA Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35449/teknika.v10i2.275

Abstract

Jatuh tegangan pada jaringan tegangan menengah merupakan suatu kondisi jumlah tegangan yang disalurkan tidak sama dengan tegangan yang diterima. Jatuh tegangan juga dipengaruhi oleh arus yang mengalir dan nilai resistansi dan reaktansi penghantar. Penyulang Subaru merupakan salah satu penyulang pada Gardu Induk Kenten yang mempunyai beban besar sehingga saat beban puncak, jatuh tegangannya cukup besar. Tujuan dari penelitian ini adalah untuk menganalisa jatuh tegangan pada Penyulang Subaru, ditinjau dari sebelum pemecahan beban dan setelah pemecahan beban pada saat beban puncak. Metode yang digunakan dalam penelitian ini adalah metode topologi jaringan. Hasil penelitian adalah sebelum pemecahan beban, jatuh tegangan 3 fasa pada Penyulang Subaru adalah 287,3229 V atau 1,4154%. Setelah pemecahan beban, jatuh tegangan 3 fasa pada Penyulang Subaru menjadi 109,1823 V atau 0,5300%, dan jatuh tegangan 3 fasa pada Penyulang Chevrolet menjadi 109,2697 V atau 0,5308%.
PENGEMBANGAN PERANGKAT LUNAK UNTUK AKUISISI DATA KONSUMSI DAYA LISTRIK DARI POWER METER Ginting, Ignatius; Mulyadi, Melisa; Wijayanti, Linda; Manalu, Ferry Rippun Gideon
Jurnal Elektro Vol 17 No 2 (2024): Jurnal Elektro: Oktober 2024
Publisher : Prodi Teknik Elektro, Fakultas Teknik Unika Atma Jaya Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/jurnalelektro.v17i2.6109

Abstract

Technological developments make it possible to monitor electricity consumption in real-time via the internet. The system developed uses a power meter to collect data, Python to process data and IoT connectivity via NodeMCU ESP8266 to send data to the internet. Python is used so that measurement data can be processed and presented in an easy-to-understand format. The test results show that electrical data measurements can be displayed with an error ranging from 0.04% -11.56%. This is because there is a delay from the time the power meter is measured until the data is displayed on ThingSpeak.
Pelatihan Mikrokontroler Dasar Arduino UNO dan Simulasi Tinkercad Gideon Manalu, Ferry Rippun; Wijayanti, Linda; Mulyadi, Melisa; Ghozali, Theresia; Sereati, Catherine Olivia; Kartawidjaja, Maria Angela
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.v4i02.6168

Abstract

The Electrical Engineering study program of the Faculty of Engineering, Atma Jaya Catholic University of Indonesia has been collaborating with Harapan Bagi Bangsa Christian Middle School, Cilincing, North Jakarta for several years in an extracurricular program for junior high school students, as a form of community service from Electrical Engineering lecturers. The extracurricular activity program implemented is in the form of basic electronics training. The theme of the activity varies, according to the requests and needs of the partner schools. The first activity is to provide basic electronics skills training to students. This program received a very positive response from teachers and students. From the evaluation results of previous activities, all students wanted training activities with advanced materials. The training provided is an introduction to basic Arduino Uno microcontrollers using Tinkercad simulation software. The purpose of this activity is to conduct training on the introduction and how to program the Arduino Uno microcontroller to turn on Light Emitting Diodes (LEDs). The training was carried out at Harapan Bagi Bangsa Christian Middle School. The training began by assembling the resistor and LED components on the project board. After all the components were installed, an Arduino Uno microcontroller program was created to turn on the LEDs alternately according to the order of the program created. The training used Tinkercad simulation software and the Arduino Uno microcontroller board. From the results of the student evaluation, 92.2% of students gave good and excellent ratings, while 7.8% gave neutral ratings for this training.
Design and Implementation of Two-Axis Solar Tracker Bachri, Karel Octavianus; Wilson; Mulyadi, Melisa; Wijayanti, Linda; Hutapea, Duma Kristina Yanti; Siregar, Marsul
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 9 No 2 (2023): OKTOBER 2023
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.v9i2.4983

Abstract

Makalah ini membahas perancangan dan implementasi sistem penggerak panel surya 2 sumbu dengan menggunakan motor servo yang dikendalikan oleh mikrokontroler arduino uno, sistem ini bekerja berdasarkan masukan sensor LDR sebanyak empat buah yang dipasang pada masing-masing sisi panel surya dan satu buah yang dipasang di tengah modul solar panel tersebut.Sensor LDR pun dihubungkan pada mikrokontroller yang akan mengolah masukkan yang diberikan menjadi keluaran tegangan kepada motor servo.Motor servo yang dipakai diperancangan alat ini sebanyak dua buah yang akan meggerakkan panel surya menuju arah vertical dan horizontal. Pengujian dilakukan dengan beberapa tahap seperti pengujian hasil yang didapatkan oleh panel surya dengan berbagai kondisi,pengujian sensor cahaya dan pengujian keseluruhan.Sehingga mendapatkan hasil yang cukup baik dan memuaskan,kedua motor servo dapat bergerak menerima hasil keluaran yang diberikan oleh mikrokontroller dan kelima sensor LDR dapat menerima cahaya matahari dan mendeteksi arah cahaya matahari secara cukup baik sehingga perancangan alat mendapatkan hasil keseluruhan secara cukup baik. Hasil keseluruhan daya yang didapat secara maksimal oleh panel surya sebanyak 12V yang akan bergerak mengikuti arah cahaya matahari.
Inovasi Struktural: Pemanfaatan Geofoam Expanded Polystyrene (Eps) Dalam Pembangunan Infrastruktur Modern Faishol, Akhmad; Wijayanti, Linda; Mulyadi, Melisa
Jurnal Teknik Sipil Vol. 17 No. 1 (2024): Juni 2024
Publisher : Faculty Of Engineering University 17 August 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/jts.v17i1.1595

Abstract

Bidang pembangunan infrastruktur kontemporer berada pada titik balik dalam sejarahnya, terjebak di antara tuntutan akan metode pembangunan yang ramah lingkungan dan pencarian inovasi yang tiada henti. Integrasi Geofoam Expanded Polystyrene (EPS) merupakan terobosan struktural yang menjanjikan perubahan revolusioner dalam berbagai aplikasi teknik terkait konstruksi infrastruktur modern. Tujuan dari penelitian ini adalah untuk mengetahui pemanfaatan Geofoam Expanded Polystyrene (EPS) dalam pembangunan infrastruktur modern. Penelitian ini menggunakan metode penelitian kualitatif. Jurnal ilmiah, makalah, buku, laporan penelitian, dan publikasi teknis terkait yang diterbitkan oleh instansi pemerintah, dunia usaha, dan lembaga penelitian merupakan sumber data sekunder yang digunakan dalam penelitian ini. Hasil penelitian menunjukkan bahwa Expanded Polystyrene (EPS) Geofoam merupakan bahan bangunan yang memiliki kualitas berbeda-beda sehingga menjadi pilihan tepat untuk pembangunan infrastruktur masa kini. Bobotnya yang rendah, kekuatan tekan yang tinggi, kualitas isolasi termal yang kuat, stabilitas dimensi yang konstan, ketahanan terhadap kerusakan kimia, beragam penggunaan, kelestarian lingkungan, dan keterjangkauan adalah beberapa atribut utamanya. Penggunaan EPS Geofoam pada berbagai proyek bangunan, seperti dinding penahan tanah, bandara, jalan tol, jembatan dan infrastruktur lainnya telah terbukti memberikan keuntungan besar dalam hal efektivitas biaya, kinerja struktural dan kelestarian lingkungan.
Using Content-Based Filtering and Apriori for Recommendation Systems in a Smart Shopping System Pebrianti, Dwi; Ahmad, Denis; Bayuaji, Luhur; Wijayanti, Linda; Mulyadi, Melisa
Indonesian Journal of Computing, Engineering, and Design (IJoCED) Vol. 6 No. 1 (2024): IJoCED
Publisher : Faculty of Engineering and Technology, Sampoerna University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35806/ijoced.v6i1.393

Abstract

This research is motivated by the increasing significance of online shopping platforms and the challenges faced by users in locating products that align with their preferences and requirements, which can significantly influence the sales performance of online retailers. Consequently, the primary objective of this study is to design and implement a recommendation system capable of identifying suitable products and forecasting the purchase frequency for various product combinations, while also integrating this recommendation system with a smart shopping platform. To achieve this objective, the research employs machine learning techniques, specifically content-based filtering and the Apriori algorithm. Content-based filtering is utilized to analyze user preferences and behavioral patterns related to visited products, while the Apriori algorithm is employed to evaluate support and confidence values for item set combinations, thereby generating frequency values for future transactions involving product combinations. Additionally, a smart shopping system is developed and integrated, enhancing the shopping experience through smartphone applications and streamlining the payment process to facilitate seamless product purchases. The research methodology involves data collection pertaining to products and user preferences, followed by several testing involving a sample group of user respondents. The results demonstrate that the developed recommendation system effectively delivers relevant product recommendations based on user preferences, achieving a confidence value up to 98%. Furthermore, the smart shopping system proves capable of independently assisting users throughout the transaction process, thereby enhancing overall user experience and convenience.
PEMBUATAN INKUBATOR TUKIK UNTUK KONSERVASI PENYU PANTAI PANGUMBAHAN UJUNG GENTENG Octaviani, Sandra; Ghozali, Theresia; Basuki, Widodo Widjaja; Wijayanti, Linda; Sereati, Catherine Olivia
Jurnal Serina Abdimas Vol 1 No 2 (2023): Jurnal Serina Abdimas
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jsa.v1i2.26110

Abstract

Turtles are protected animals because of the emergency of extinction by a lot of conservation of turtle cultivation to increase its population. It is unavoidable if there are still many population reductions from turtles, one of which comes from the low survival rate of baby turtles called hatchlings. The process of laying eggs for female turtles requires warm beach sand to cover their eggs and this occurs at night when the moon is dark. After about two months the eggs will hatch, and the hatchlings usually go straight to the sea. There are many disturbances experienced by hatchlings to get to the sea such as being kidnapped, being preyed upon, and not even going to the sea. Improvements in conservation facilities are made to provide an incubator which are always kept warm by being provided with a bulb as a heater, a thermostat as a temperature regulator and a humidifier as a humidity regulator. After hatching the eggs are placed in a replacement pond which was built as a hatchling pond for temporary shelter for the newly hatched hatchlings, and the pond is placed in a cleaned hatchery room with the roof replaced with a mild steel frame The result of the upgrade from this facility is that hatchling success has increased to 91%, and newly hatched hatchlings can be closely monitored until they are ready to be released into the sea. It is hoped that the turtle population in the world can be maintained so that our children and grandchildren will be able to see the turtles directly. Penyu merupakan hewan yang dilindungi karena darurat akan kepunahannya. Sudah banyak konservasi budidaya penyu untuk meningkatkan populasi penyu. Tetapi tidak dapat dihindari jika masih banyak pengurangan populasi dari penyu, yang salah satunya berasal dari rendahnya tingkat keberhasilan hidup dari bayi penyu yang disebut tukik. Proses bertelur penyu betina memerlukan pasir pantai yang hangat untuk menutupi telur-telurnya dan hal ini terladi pada malam hari saat bulan gelap. Setelah sekitar dua bulan telur akan menetas dan tukik biasanya langsung berjalan menuju ke laut. Banyak gangguan yang dialami oleh tukik untuk bisa sampai ke laut seperti diculik, dimangsa, dan bahkan tidak menuju ke laut. Peningkatan fasilitas konservasi yang dibuat menyediakan ruang inkubator yang senantiasa dipertahankan hangat dengan diberi bohlam sebagai penghangat, thermostat sebagai pengatur suhu dan humidifier sebagai pengatut kelembaban. Setelah telur menetas ditempatkan di kolam pengganti yang dibangun sebagai kolam tukik untuk penampungan sementara bagi tukik yang baru menetas, dan kolam diletakkan dalam ruang tukik yang sudah dibersihkan dengan atap diganti dengan rangka baja ringan. Hasil dari peningkatan dari fasilitas ini adalah keberhasilan penetasan tukik meningkat menjadi 91 %, dan tukik yang baru menetas dapat diawasi dengan seksama sampai siap dilepas ke laut. Diharapkan populasi penyu yang ada di dunia dapat terjaga hingga anak cucu kita nanti dapat melihat langsung penyu yang ada.
Co-Authors Abadi, Surya Abdul Azis Ahmad, Denis Akhmad Faishol Anang Kukuh Adisusilo Anthon de Fretes, Anthon de Fretes Anwar, Hadrian Bachri, Karel Octavianus Basuki, Widodo Widjaja Cahyaningrum, Winda Rahma Catherine Olivia Sereati Chandra Winata Gunardi Christanto, Henoch Juli Dhanti, Kurnia Ritma Dita Pratiwi Kusuma Wardani Duma Kristina Yanti Edhifa . Emmy Wahyuningtyas Enny Widawati Faishol, Akhmad Ferry Rippun Gideon Manalu, Ferry Rippun Gideon Furtasan Ali Yusuf Gideon Manalu, Ferry Rippun Ginting, Ignatius Hanifa, Noha Hari Prasetijo Harlianto Tanudjaja Hendry Wong Henry, Carolus Herlina Herlina Idris, Reuben Louis Indriati, Kumala Jakariya Joevierdi, Joevierdi Jones, Danzel Maxdriel Samuel Jong, Susanto Julius Bata Kartadinata, Budi Khairun Nisa Kumala Indriati Kumar, Saurav L Lukas Lilis Sholihah Listiyowati, Tanti Luhur Bayuaji, Luhur Lukas Lukas Lukas Mahyastuti, V. Winda Maria Angela Kartawidjaja Maria Angela Kartawidjaja Markus Tanubrata Melisa Mulyadi Melisa Mulyadi Melisa Mulyadi Muhammad Hidayat Muniroh, Nur An-Nuha Mylyadi, Melisa Nasution, Andri Rachmat Kumalasian Nova Eka Budiyanta Nugrahena, Nurmalita Putri Pebrianti, Dwi Pin Panji Yapinus, Pin Panji Putranti, Respatiningtyas Amadea Danfi Rani Anggrainy Rinto Yusriski Ronald Sukwadi Sachi, Haenuki Sandra Octaviani Sandra Octaviani Sandra Octaviani Sarinastiti, Deliza Dhiakhalda setiawan, Dibyo Sheila Tobing Siregar, Marsul Siti Gusti Ningrum Stefan Adriel Sudarsono, Tantri Analisawati Surya Abadi Sutanto, Daniel Denis Tajuddin Nur Tajuddin Nur Theresia Ghozali Toto Tohir Wahyudi Faris Wibawa Prasetya Wiliam Wiliam Wilona Angelina Azels Wilson Zenik, Andre