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All Journal Jurnal Informatika dan Teknik Elektro Terapan Andalasian International Journal of Applied Science, Engineering, and Technology Jurnal Andalas: Rekayasa dan Penerapan Teknologi
Ramadhamy, Queen Hesti
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Energy Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Other

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Strategi Pengendalian Suplai Air Bersih di PT. Semen Padang dengan Pemanfaatan Level Switch dan Siklus PDCA Refki Budiman; Queen Hesti Ramadhamy; Budi, Baik; Faizal, Jhonny
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 5 No. 1 (2025): Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v5i1.112

Abstract

Water Plan (WP) is a clean water treatment unit that supplies water for residential areas, offices, and factory operations at PT Semen Padang. One of the main issues faced by WP is the low water level in the canal due to inadequate monitoring by operators, which can lead to operational disruptions and even production shutdowns. This study aims to develop a clean water supply control strategy by implementing an automatic monitoring system using a level switch based on the Plan-Do-Check-Action (PDCA) cycle. The research method begins with problem identification through an analysis of the operator's logbook, followed by determining priorities and root causes using the Strategic Risk Severity Matrix and the Nominal Group Technique (NGT). Improvement implementation is carried out by installing a level switch and an alarm in the operator room to ensure automatic water level monitoring. The evaluation results indicate a significant improvement in water supply quality, a reduction in operational disruption risks, and maintenance cost efficiency, with potential water savings reaching 450,000 m³ per month and a reduction in pump repair costs of Rp. 25,000,000. The implementation of this PDCA-based system has proven effective in enhancing the reliability of the clean water supply and supporting continuous improvement in WP PT Semen Padang. In the future, a similar approach can be applied to optimize water resource management in other industrial sectors.
Leveraging Naive Bayes Classification for Early Detection of Breast Cancer: A Data-Centric Diagnostic Approach Budi, Baik; Refki Budiman; Queen Hesti Ramadhamy
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 5 No. 1 (2025): Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v5i1.114

Abstract

This study aims to develop a breast cancer detection model using two distinct approaches: the Naive Bayes algorithm for classification and the K-Means algorithm for clustering. The methodology involves the collection of diagnostic clinical feature data, data preprocessing for normalization, and the separate training and evaluation of each model. Naive Bayes is employed to classify breast cancer as malignant or benign based on training and testing datasets, while K-Means is applied to unlabeled data as an additional analytical method. The performance of the Naive Bayes classifier is assessed using a confusion matrix, whereas the clustering results from K-Means are evaluated based on cluster validity metrics. The results indicate that Naive Bayes achieves a high level of accuracy (93%) in breast cancer classification, while K-Means offers additional insights through data pattern clustering. Together, these approaches demonstrate potential to effectively support the medical diagnostic process.
Simulation Study of 2.4 GHz Rectangular Microstrip Patch Antenna for Sensing Sugar Content Detection -, Queen Hesti Ramadhamy; Maulidya, Annisa; Budi, Baik; Budiman, Refki
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 5 No. 1 (2025): Juni 2025
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v5i1.115

Abstract

This study presents a simulation-based analysis of 2.4 GHz rectangular microstrip patch antenna for sensing sugar content in aqueous solutions. The antenna was designed and simulated using software with performance evaluated based on return loss and resonance frequency shifts in response to changes in the dielectric properties of the sugar solution. The primary objective was to assess the sensitivity of the rectangular microstrip antenna to variations in sugar concentration. The result show that the antenna exhibits measurable resonance frequency shifts as the sugar content in the solution increases, indicating the potential of microstrip antennas as effective, non-invasive sensors for liquid concentration monitoring. These findings contribute to the development of microwave-based sensing technologies, offering insights into the application of microstrip patch antennas for sugar detection and other similar application.
The Prediction of Electrical Grid Stability Using Naïve Bayes and K-Means Algorithm Baik Budi; Ilhamdi Rusydi, Muhammad; Arya Witama, Reivan; Hesti Ramadhamy, Queen; Budiman, Refki
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 5 No. 2 (2025): July 2025
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v5i02.223

Abstract

This study explores the use of Naive Bayes and k-means algorithms to predict and analyzed stability of the electrical grid. Data set for this research is public dataset from Kaggle. The main goal of the research is to develop an accurate and efficient predictive model. Naive Bayes was chosen it has ability to handle independent features and also have a compatibility with highdimensional data. The implementation was carried out using Python in Google Colab, with data preprocessing that included feature normalization and an 80:20 train-test split. The Gaussian Naive Bayes model was used for system stability classification. The results demonstrate excellent model performance, with an accuracy of 97.35%, precision of 98.91%, recall of 97.02%, and an F1-score of 97.95%. The confusion matrix reveals the model's ability to classify "stable" and "unstable" conditions with minimal prediction errors.
DETEKSI PERNAPASAN MANUSIA MENGGUNAKAN RADAR FMCW 24 GHZ UNTUK MULTITARGET DALAM LINEAR DAN NON-LINEAR Queen Hesti Ramadhamy
Jurnal Informatika dan Teknik Elektro Terapan Vol. 13 No. 3S1 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i3S1.7633

Abstract

Deteksi pernapasan manusia secara nirsentuh sangat dibutuhkan di bidang medis, terutama selama kondisi seperti COVID-19, untuk meminimalkan risiko yang ditimbulkan saat bersentuhan dengan pasien yang memiliki penyakit menular. Salah satu teknologi yang dapat memenuhi kebutuhan ini adalah sistem radar. Pada penelitian ini, radar yang digunakan adalah Frequency Modulated Continuous Wave (FMCW), yang dapat mendeteksi banyak target dan gelombang mm dengan sensitivitas tinggi. Penelitian ini memiliki dua model skenario. Skenario pertama adalah dimana target diposisikan tepat di depan radar, dan skenario kedua adalah dimana terdapat penghalang di depan radar dan target berada di belakang penghalang. Sistem radar yang digunakan dalam penelitian ini bertujuan untuk membedakan target yang terdeteksi. Filter yang digunakan pada penelitian ini adalah Band-pass Filter (BPF). Hasil dari penelitian ini menunjukkan bahwa sistem radar dapat membedakan target yang terdeteksi dan respirasi, baik pada kondisi line-of-sight dengan banyak target maupun kondisi non-line-of-sight, meskipun terjadi pelemahan sinyal.
Pengembangan Alat Pengaduk dengan Sistem Pembuangan Uap untuk Usaha Pembersih Lantai di Kota Padang Andre, Hanalde; Emeraldi, Primas; Luthfi, Amirul; Ramadhamy, Queen Hesti; Tomas, Micko; Pratama, Rizki Wahyu; Herier, Gilang Ramadhan; Putra, Rangga; Antoni, Jefri
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 4 No. 2 (2024): Desember 2024
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v4i2.110

Abstract

Produksi pembersih lantai di Kecamatan Pauh, Kota Padang, menghadapi kendala dalam proses produksi, terutama pada tahap pengadukan bahan kimia yang dilakukan secara manual. Proses ini tidak hanya memakan waktu lama dan tidak efisien, tetapi juga menghasilkan uap berbahaya yang berdampak pada kesehatan pekerja dan masyarakat sekitar. Penelitian ini bertujuan untuk mengembangkan alat pengaduk otomatis yang dilengkapi dengan sistem pembuangan uap guna meningkatkan efisiensi produksi, kualitas produk, dan keselamatan kerja. Alat yang dirancang terdiri dari motor listrik, modul pengatur kecepatan, pewaktu, serta sistem pembuangan uap yang efektif. Metode penelitian mencakup tahapan perancangan, implementasi, dan evaluasi kinerja alat. Evaluasi dilakukan untuk menilai efektivitas alat dalam mempercepat waktu produksi, menjaga standar kualitas produk, dan mengurangi risiko kesehatan. Hasil pengembangan menunjukkan bahwa alat pengaduk otomatis mampu meningkatkan efisiensi produksi, menurunkan biaya operasional, serta meningkatkan keselamatan kerja secara signifikan. Selain itu, penerapan alat ini juga memberikan manfaat berupa standarisasi kualitas produk dan pengurangan dampak negatif terhadap lingkungan. Hasil penelitian ini didokumentasikan dalam laporan kegiatan, artikel ilmiah, dan publikasi media massa, dengan harapan dapat menjadi solusi inovatif bagi usaha rumah tangga lainnya untuk meningkatkan daya saing.
Peningkatan Kualitas Syiar Islam Melalui Penggunaan Multimedia di Mushalla Al-Mahira, Kelurahan Aie Pacah Baharuddin, Baharuddin; Elfitri, Ikhwana; Fernandez, Rudy; Andre, Hanalde; Ramadhamy, Queen Hesti; Budi, Baik; Nofendra, Riko; Luthfi, Amirul
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 5 No. 2 (2025): Desember 2025
Publisher : Electrical Engineering Department Faculty of Engineering Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v5i2.131

Abstract

Kegiatan Pengabdian kepada Masyarakat (PkM) oleh Kelompok Bidang Keahlian (KBK) Telekomunikasi, Departemen Teknik Elektro, Fakultas Teknik Universitas Andalas dilaksanakan dengan tujuan mendukung peningkatan kualitas syiar Islam melalui pemanfaatan teknologi multimedia di Mushalla Al-Mahira, Kelurahan Aie Pacah. Program yang dilaksanakan pada 22 November 2025 ini berfokus pada penyediaan dan pengenalan perangkat teknologi, terutama sistem audio dan multimedia, sebagai sarana pendukung dakwah yang lebih efektif dan menarik. Kegiatan dipimpin oleh Baharuddin, MT, dengan dukungan Ketua Program Studi Teknik Elektro, Dr. Eng. Primas Emiraldi, serta partisipasi dosen KBK Telekomunikasi lainnya. Tim PkM memberikan perangkat sound system serta satu unit vacuum cleaner sebagai upaya peningkatan fasilitas mushalla, sekaligus memberikan pelatihan penggunaan perangkat agar dapat dimanfaatkan secara optimal. Hasil kegiatan menunjukkan bahwa penerapan teknologi multimedia mampu meningkatkan kualitas penyampaian materi dakwah, memperbaiki kenyamanan jamaah, dan memperkuat kapasitas pengurus mushalla dalam pengelolaan sarana ibadah. Program ini menegaskan peran penting perguruan tinggi dalam transfer teknologi kepada masyarakat sebagai bagian dari pelaksanaan tridarma akademik.
Co-Authors Amirul Luthfi, Amirul ANNISA MAULIDYA Antoni, Jefri Arya Witama, Reivan Baharuddin Baharuddin Baik Budi Budi, Baik Budiman, Refki Faizal, Jhonny Hanalde Andre Herier, Gilang Ramadhan Ikhwana Elfitri Ilhamdi Rusydi, Muhammad Pratama, Rizki Wahyu Primas Emeraldi Putra, Rangga Refki Budiman Riko Nofendra Rudy Fernandez Tomas, Micko