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All Journal JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks SPEKTRAL : Journal of Communications, Antennas and Propagation Brilliance: Research of Artificial Intelligence Electron: Jurnal Ilmiah Teknik Elektro Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat Journal Geuthee of Engineering and Energy JURNAL ILMIAH PENELITIAN MAHASISWA JATAED: Journal of Appropriate Technology for Agriculture, Environment, and Development JURNAL PENGABDIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (JP3L)
Deri Latika Herda
Politeknik Negeri Padang
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Pemberdayaan Kelompok Budidaya Ikan Air Tawar "Sukses Mulia" melalui Inovasi Teknologi Pemeliharaan dan Strategi Pemasaran Digital Ridho, Sahid; Firdaus, Firdaus; Septivani, Mega Dwi; Herda, Deri Latika; Rusfandi, Rusfandi
JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Vol 9, No 1 (2025): Mei
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jpp-iptek.2025.v9i1.6709

Abstract

Kelompok budidaya ikan air tawar “Sukses Mulia” yang berlokasi di Kelurahan Koto Luar, Kecamatan Pauh, Kota Padang, Provinsi Sumatera Barat merupakan kelompok masyarakat yang bergerak dalam bidang budidaya ikan nila. Kelompok ini menghadapi berbagai permasalahan, antara lain sistem pemeliharaan yang belum efisien, kebutuhan pakan yang tidak terkelola dengan baik, serta strategi pemasaran yang masih bersifat konvensional dan belum mampu memberikan nilai tambah pada produk. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memberdayakan kelompok melalui penerapan inovasi teknologi dan penguatan kapasitas pemasaran digital. Solusi yang ditawarkan meliputi perancangan dan pembuatan alat pemberi pakan ikan otomatis yang dapat diatur berdasarkan jadwal dan takaran pakan serta pelatihan pemasaran digital untuk meningkatkan kemampuan promosi dan perluasan jangkauan pasar. Hasil kegiatan menunjukkan peningkatan efisiensi dalam proses pemeliharaan, peningkatan produktivitas hasil panen, serta penguatan kompetensi anggota kelompok dalam memanfaatkan media digital untuk memasarkan produk. Secara keseluruhan, kegiatan ini berkontribusi pada peningkatan nilai tambah hasil budidaya ikan air tawar dan mendukung peningkatan stabilitas pendapatan serta keberlanjutan usaha budidaya yang dijalankan oleh kelompok.
Antipodal Vivaldi Array Antenna for LoRa: A Simulation Study within 900–923 MHz Band Deri Latika Herda; Amelia Yolanda; Gardinia Naz Surya; Uzma Septima; Popy Maria
Brilliance: Research of Artificial Intelligence Vol. 5 No. 2 (2025): Brilliance: Research of Artificial Intelligence, Article Research November 2025
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v5i2.7013

Abstract

LoRa (Long Range) is a wireless communication technology that has gained significant attention in the Internet of Things (IoT) due to its wide coverage and low power consumption. However, its performance is often affected by environmental obstacles that cause signal attenuation and interference. In Indonesia, LoRa is regulated to operate in the 920–923 MHz band, whereas many commercial devices are designed for 915 MHz, leading to suboptimal antenna performance. Therefore, this research aims to design and simulate an antenna that can operate effectively across 900–923 MHz, covering both the commonly used 915 MHz band and the regulated 920–923 MHz band in Indonesia. The proposed design is a 1×2 Antipodal Vivaldi Array antenna using an FR-4 substrate with a dielectric constant of 4.3 and thickness of 1.6 mm. The simulation process was conducted using CST Studio Suite 2019, focusing on the optimization of key geometric parameters such as feedline width, inter-element spacing, flare structure, and ground plane. The simulated results show that the antenna achieves a return loss of –19.11 dB at 923 MHz, a bandwidth of 344.4 MHz, and a gain ranging from 5.103 dBi at 900 MHz to 5.162 dBi at 923 MHz. The radiation pattern is directional, which supports long-range communication requirements. These findings demonstrate that the proposed antenna design meets the specifications for LoRa communication and provides a wideband, directional solution that can enhance the reliability of IoT systems.
Circular microstrip antenna with defected ground structure for bandwidth enhancement at 2.4 GHz Muhammad Nur Fadly; Deri Latika Herda; Popy Maria
Journal Geuthee of Engineering and Energy Vol 5, No 1 (2026): Journal Geuthee of Engineering and Energy
Publisher : Geuthèë Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/joge.v5i1.67

Abstract

This study proposes an optimized circular microstrip patch antenna integrated with a stepped-slot Defected Ground Structure (DGS) for 2.4 GHz WLAN applications. The objective of this work is to improve the bandwidth and gain performance of conventional microstrip antennas, which are typically limited by narrow bandwidth and low radiation efficiency. The main contribution of this study is the development of a novel stepped-slot DGS configuration combined with a circular patch geometry to achieve simultaneous enhancement of bandwidth and gain. The proposed antenna is designed on an FR-4 substrate with a dielectric constant of 4.3 and a thickness of 1.6 mm, and analyzed using CST Microwave Studio. A parametric optimization of the DGS dimensions is performed to obtain optimal antenna performance. Simulation results show that the bandwidth increases significantly from 70.4 MHz to 298.8 MHz, representing more than a fourfold improvement. In addition, the antenna gain improves from 2.72 dBi to 3.87 dBi after the implementation of the DGS structure. These results confirm that the proposed stepped-slot DGS effectively enhances impedance bandwidth and radiation performance without increasing antenna complexity. Therefore, the proposed antenna is suitable for practical WLAN applications requiring compact size and improved performance. The findings of this study also provide useful insights for the design of high-performance microstrip antennas using DGS techniques in future wireless communication systems.
Predicting sleep quality using random forest on sleep health and lifestyle data Naia Az - Zahra; Deri Latika Herda
Journal Geuthee of Engineering and Energy Vol 5, No 1 (2026): Journal Geuthee of Engineering and Energy
Publisher : Geuthèë Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52626/joge.v5i1.83

Abstract

Sleep is an important physiological process that plays a role in maintaining the balance of biological and psychological functions. Lifestyle changes, such as high stress levels and a lack of physical activity, can affect a person’s sleep quality. This study aims to analyze the influence of health and lifestyle factors on sleep quality and to develop a predictive model for sleep quality using the Random Forest algorithm. This study uses the Sleep Health and Lifestyle dataset with a classification approach into two categories, namely Ideal Sleep and Non-Ideal Sleep, determined based on sleep duration parameters referring to the concept of a U-shaped relationship and the sleep duration recommendations from the National Sleep Foundation. The data were processed through preprocessing and class imbalance handling using the SMOTE method, then split into training and testing data. The Random Forest model was built through hyperparameter tuning and evaluated using accuracy and Area Under the Curve (AUC) metrics. The results show that the Random Forest model achieved good classification performance with an Accuracy of 91.26%, Precision of 91.78%, Recall of 91.26%, and F1-Score of 91.30%. In addition, the model obtained an Area Under the Curve (AUC) value of 0.962, indicating very good classification capability. Based on the Feature Importance analysis results, the features with the greatest influence on sleep quality are Heart Rate, Stress Level, Physical Activity, and Daily Steps. The findings indicate that the combination of the SMOTE method and Random Forest is effective for predicting sleep quality based on health and lifestyle factors.
Optimization of Telkomsel 4G LTE Network in Taman Panorama Baru Area Afrizal Yuhanef; Deri Latika Herda; Herry Setiawan; Dhea Veriska
Brilliance: Research of Artificial Intelligence Vol. 6 No. 1 (2026): Brilliance: Research of Artificial Intelligence, Article Research May 2026
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v6i1.8303

Abstract

The Bukittinggi City New Panorama Tourism Park is one of the most visited destinations, requiring optimal cellular network quality to support communication and data services. This study aims to analyze the performance of Telkomsel’s 4G LTE network in the area, plan necessary improvements, and optimize network performance using Atoll software. The initial data were collected through a drive test by measuring key parameters such as Reference Signal Received Power (RSRP), Signal to Interference plus Noise Ratio (SINR), and throughput. Field measurements revealed that several areas still exhibited RSRP values ? -110 dBm, low SINR, and existing bad spots, indicating that the service quality had not yet reached optimal performance. Network optimization was carried out by adjusting antenna parameters including azimuth, tilt, and transmit power using the Automatic Cell Planning (ACP) method. The simulation results in Atoll after optimization showed improved RSRP coverage, a significant increase in SINR, and higher predicted throughput compared to the initial condition. However, discrepancies were found between simulation and field results, particularly in throughput, due to propagation model limitations, physical obstructions, and environmental variations. In conclusion, the implemented optimization successfully enhanced the overall network performance, although further evaluation is required to better align the simulation outcomes with real field conditions.
Analisis Distribusi Received Power pada Fiber Access Terminal (FAT) Jaringan Fiber to the Home (FTTH) Berbasis Gigabit Passive Optical Network (GPON) Menggunakan Optical Power Meter (OPM) Dani Adzmi; Aprinal Adila Asril; Deri Latika Herda
JURNAL ILMIAH PENELITIAN MAHASISWA Vol 4 No 5 (2026): Oktober
Publisher : Kampus Akademik Publiser

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jipm.v4i5.3011

Abstract

Jaringan Fiber to the Home (FTTH) berbasis Gigabit Passive Optical Network (GPON) memerlukan kualitas daya optik yang sesuai standar untuk menjamin keandalan layanan kepada pelanggan. Penelitian ini bertujuan menganalisis distribusi received power pada Fiber Access Terminal (FAT) FCRE07D03 menggunakan Optical Power Meter (OPM). Penelitian menggunakan metode kuantitatif dengan pendekatan deskriptif melalui pengukuran langsung pada 24 port FAT pada panjang gelombang 1310 nm. Data hasil pengukuran dianalisis menggunakan statistik deskriptif yang meliputi nilai maksimum, minimum, rata-rata (mean), range, dan standar deviasi, kemudian dibandingkan dengan standar operasional jaringan GPON. Hasil penelitian menunjukkan bahwa nilai received power berada pada rentang −15,32 dBm hingga −17,78 dBm dengan nilai rata-rata −16,77 dBm dan standar deviasi 0,63 dB. Seluruh port masih memenuhi rentang operasional GPON sehingga distribusi daya optik pada FAT dinilai baik dan layak mendukung kualitas layanan jaringan FTTH.
Co-Authors Afrizal Yuhanef Amelia Yolanda Amelia Yolanda Ananda , Risa Dwi Andi Ahmad Dahlan Aprinal Adila Asril Dani Adzmi Dhea Veriska Ferdiansyah Ferdiansyah Firdaus Firdaus Frenzi Agres Yudithia Gardinia Naz Surya Herry Setiawan Joko Suryana Mega Dwi Septivani Muhammad Nur Fadly Naia Az - Zahra Nofry Ardy Roza Nugraha Saputra Popy Maria Popy Maria Popy Maria Popy Maria Raiqah Luthfiah, Najla Ratna Dewi Rossa, Anindita Aulia Rusfandi Rusfandi Sahid Ridho Sembiring, Rinawati Siska Aulia Sri Nita sri nita Ummul Khair Uzma Septima Uzma Septima - Vera Veronica Wahyudi, Al Hafizh Yulindon Y Zidan Pratama Yuda Zidan Pratama Yuda