Computer Networks and Communications, Computer Engineering, Information Systems, Hardware and Architecture
6
Scopus Publications
576
Scholar Citations
12
Scholar h-index
18
Scholar i10-index
Scopus Publications
Performance Evaluation of CubeSat Nanosatellite using LoRa in Low Earth Orbit Badie Uddin, Lalu Delsi Samsumar, Puput Dani Prasetyo Adi, Henri Septanto, Petrus Dwi Ananto Pamungkas, Anik Hanifatul Azizah Proceeding 2025 IEEE 11th Information Technology International Seminar Itis 2025, 2025 LoRa Communication Systems face significant challenges in maintaining Quality of Services (QoS) when LoRaWAN networks must use Nano Cube Satellites that have limited resources and operate in Low Earth Orbit (LEO). This is due to dynamic link conditions, the occurrence of Doppler effects, and also power limitations. This research conducts a specific evaluation of the Non-Terrestrial Network (NTN) network operating robustly. And systematically this research analyzes the relationship between satellite elevation angles and measurements of Receive Signal Strength (RSSI) indicators, Signal to Noise Ratio (SNR), and Packet Error Rate (PER). And also combine the math model for Lik Budget calculation and Orbit propagation. The results of the simulation show RSSI values of $\mathbf{- 1 0 5 ~ d B m}$, SNR of $\mathbf{+ 8 ~ d B}$, and PER of $\mathbf{0. 5 \%}$. These represent critical reference points for reliable data transmission and reception. The findings also provide quantitative guidance for CubeSat constellation design as well as ground station planning that enables LoRa networks to work efficiently.
Improvement of Direct-Sequence Spread Spectrum for LPWAN Satellite Communication Lalu Delsi Samsumar, Puput Dani Prasetyo Adi, Supardianto, Erfan Wahyudi, Zaenudin, Badie Uddin Proceeding 2025 IEEE 11th Information Technology International Seminar Itis 2025, 2025 Low Power Wide Area Network (LPWAN) satellite communication has an emergency feature that offers hope for future IoT communication systems,as it is certain to avoid problems and obstacles or barriers that occur,such as obstacles and limited distance in terrestrial-based LPWAN telecommunications. Resilience in the transmission process is determined by signal strength over a wide bandwidth,little interference that causes signal attenuation,and also allows communication using batteries and small transmission power,as well as superior security systems that can face the challenges of very long distances and also overcome high signal attenuation. As well as a communication system that can be effectively used in the process of transmitting data in active conditions,with a low signal-noise ratio (SNR) indicator and a Receive Signal Strength Indicator (RSSI) that remains stable. So,using DSSS (Direct Sequence Spread Spectrum) in the future will have a significant impact on the attenuation of the signal that occurs. From the results of the method comparison,Processing Gain (dB) using Traditional DSSS is 21 dB,while using DSSS Improvement for LPWAN can increase to $\mathbf{2 1 ~ d B}$.
SGAP-Net: Saliency-Guided Attention with Vessel-Aligned Interpretability for Retinal Disease Diagnosis Lalu Delsi Samsumar, Bahtiar Imran, Muhamad Masjun Efendi, Erfan Wahyudi, Hasan Basri, Mochamad Bagoes Satria Junianto, Supardianto Supardiantob, Ahmad Yani Proceedings 7th International Conference on Informatics Multimedia Cyber and Information System Icimcis 2025, 2025 Early detection of ocular diseases is critical for preventing irreversible vision loss. We propose SGAP-Net, a lightweight deep learning model for classifying four retinal conditions, cataract, diabetic retinopathy, glaucoma, and normal, from fundus images. Built on EfficientNet-B3, SGAP-Net incorporates a Saliency-Guided Attention Path (SGAP) module that enhances focus on diagnostically relevant regions with minimal computational overhead (1.02 G FLOPs, 10.62 M parameters). Key improvements over the original version include Contrast Limited Adaptive Histogram Equalization (CLAHE), structure-preserving augmentations (e.g., Random Erasing, rotation), label smoothing, and class-balanced loss, collectively boosting accuracy to 88.15% and AUC-ROC to 97.33% on a stratified test set. While sensitivity for the normal class remains moderate (79.18%), indicating a tendency toward false positives, quantitative and visual analyses confirm that model attention consistently aligns with clinical biomarkers, particularly retinal vasculature and the optic disc. The system also enables automated cup-to-disc ratio (CDR) estimation. Ablation studies demonstrate that these gains stem from training refinements rather than architectural complexity. SGAP-Net thus offers a favorable trade-off between accuracy, efficiency, and interpretability, underscoring the value of careful preprocessing, augmentation, and loss design in resource-constrained retinal screening.
Combination of gray level co-occurrence matrix and artificial neural networks for classification of COVID-19 based on chest X-ray images Bahtiar Imran, Lalu Delsi Samsumar, Ahmad Subki, Zaeniah Zaeniah, Salman Salman, Muhammad Rijal Alfian Iaes International Journal of Artificial Intelligence, 2024 This research uses the gray level co-occurrence matrix (GLCM) and artificial neural networks to classify COVID-19 images based on chest X-ray images. According to previous studies, there has never been a researcher who has integrated GLCM with artificial neural networks. Epochs 10, 30, 50, 70, 100, and 120 were used in this research. The total number of data points used in this investigation was 600, divided into 300 normal chests and 300 COVID-19 data points. Epoch 10 had 91% accuracy, epoch 30 had 91% accuracy, epoch 50 had 92% accuracy, epoch 70 had 91% accuracy, epoch 100 had 92% accuracy, and epoch 120 had 90% accuracy in categorization. As indicated by the results of the classification tests, combining GLCM and artificial neural networks can produce good results; a combination of these methods can yield a classification for COVID-19.
Performance Evaluation of LoRa 923 MHz for the Internet of Things Angga Putra Juledi, Moh. Khoridatul Huda, Muhammad Taufik Dwi Putra, Lalu Delsi Samsumar, Puput Dani Prasetyo Adi, Yanuar Nurdiansyah Proceeding IEEE 10th Information Technology International Seminar Itis 2024, 2024 This research focuses on enhancing the performance of data transmission in the Internet of Things (IoT) by leveraging LoRa technology. Specifically, it utilizes the LILYGO 923 MHz LoRa32 board, which integrates the ESP32 microcontroller with a LoRa module and additional devices like a 0.96-inch OLED display. This board also features a serial converter interface, simplifying the programming process, and uses a micro USB connection for both power and uploading code. One of the goals of this research is to enable the transmission of images using LoRa, though currently, only image conversion during transmission is implemented. The study includes reliability testing of the LoRa module over a distance of 10 km. The results show that the Packet Delivery Ratio (PDR) for Spreading Factor (SF) 7 is 50%, while for SF 12, it improves to 85%. Additionally, the Received Signal Strength Indicator (RSSI) measurements at a distance of 1000 meters with 3 Non-Line-of-Sight (NLoS) conditions yielded values of -120 dBm, -90 dBm, and -78 dBm. These results highlight the potential of LoRa technology in improving IoT data transmission, especially for long-range applications.
Comparison of Bayes Theorem and Dempster Shafer Methods for Detection Pests of Mayas Rice Plants Novianti Puspitasari, Haviluddin Haviluddin, Ummul Hairah, Anindita Septiarini, Milania Versila Tappang, Lalu Delsi Samsumar Proceedings of the 9th International Conference on Computer and Communication Engineering Iccce 2023, 2023 Artificial intelligence, especially expert systems, has been widely applied in agriculture to detect pests and diseases that attack a plant. The Mayas rice plant is local in the East Kalimantan region, which has experienced a decline in production due to pest attacks. However, identifying Mayas rice pests is challenging because the symptoms are similar between one type of pest and another. This study used two methods, namely the Bayes Theorem and Dempster Shafer, to determine the highest level of accuracy and the appropriate method for diagnosing Mayas rice pests. The research data consisted of 32 symptoms and ten pests obtained from experts and 50 test data from expert diagnosis and both ways. Comparison testing using the confusion matrix. The results show that the accuracy value for the Bayes Theorem method is 74% and the Dempster Shafer method is 90%, based on the calculation of the confusion matrix. The accuracy value shows that the Dempster Shafer method has the highest accuracy value and is an appropriate method for diagnosing possible types of pests in Mayas rice.
RECENT SCHOLAR PUBLICATIONS
BAB 3 LD Samsumar JARINGAN KOMPUTER: TEROBOSAN DAN TRANSFORMASI DALAM ERA DIGITAL , 2026 2026
Rancang Bangun Sistem Penyiraman Otomatis Guna Efisiensi Air dan Pemupukan pada Proses Pembibitan Cabai D Arman, LD Samsumar Jurnal Rekayasa Sistem Informasi dan Teknologi 3 (3), 531-539 , 2026 2026
Anomaly-Based DDoS Detection Using Improved Deep Support Vector Data Description (Deep SVDD) and Multi-Model Ensemble Approach B Imran, LD Samsumar, A Subki, WA Wahyuni, Z Muahidin, MN Karim, ... Journal of Applied Informatics and Computing 10 (1), 762-771 , 2026 2026 Citations: 1
Water Level Monitoring System In Tanks Based On Internet Of Things AN Aryati, LD Samsumar, Z Zaenudin Journal of Computer Science and Informatics Engineering 5 (1), 69-82 , 2026 2026
Automation Of Fan and Room Light Based On Internet of Things Z Toyybah, LD Samsumar, Z Zaenudin Journal of Computer Science and Informatics Engineering 5 (1), 43-55 , 2026 2026
Implementation of Smart Feeder Based on Internet of Things (IoT) for Fish Aquarium M Misniati, LD Samsumar, Z Zaenudin Journal of Computer Science and Informatics Engineering 5 (1), 13-27 , 2026 2026
Enhancing Local Coffee Business Competitiveness through Production Improvement and Marketing Digitalization at Kedai Titik Anggur, North Lombok LP Kembang, LD Samsumar, D Rispawati, NWAM Asri Unram Journal of Community Service 6 (4), 1024-1030 , 2025 2025
SGAP-Net: Saliency-Guided Attention with Vessel-Aligned Interpretability for Retinal Disease Diagnosis LD Samsumar, B Imran, MM Efendi, E Wahyudi, H Basri, MBS Junianto, ... 2025 International Conference on Informatics, Multimedia, Cyber and … , 2025 2025
ANALISIS KEAMANAN JARINGAN WIRELESS PADA SMK ISLAM MANBA’UL ULUM MENGGUNAKAN PENDEKATAN PENETRATION TESTING IM Sari, LD Samsumar, M Zulpahmi Jurnal Rekayasa Sistem Informasi dan Teknologi 3 (2), 306-315 , 2025 2025
PELATIHAN DAN PENDAMPINGAN DIGITAL MARKETING SEBAGAI STRATEGI TRANSFORMASI BRANDING DAN PEMASARAN UMKM LP Kembang, S Maryanti, L Wardani, LD Samsumar JMM (Jurnal Masyarakat Mandiri) 9 (5), 5689-5701 , 2025 2025
IoT-based smart parking: slot detection and vehicle navigation in parking buildings N Sapitri, LD Samsumar, A Subki Journal of Computer Science and Informatics Engineering 4 (4), 373-385 , 2025 2025 Citations: 3
Motorcycle Security System Using Fingerprint Authentication Based on the Internet of Things (IoT) S Sutrisno, LD Samsumar, MM Efendi Journal of Computer Science and Informatics Engineering 4 (4), 361-372 , 2025 2025
Improvement of Direct-Sequence Spread Spectrum for LPWAN Satellite Communication LD Samsumar, PDP Adi, E Wahyudi, B Uddin 2025 IEEE 11th Information Technology International Seminar (ITIS), 86-91 , 2025 2025 Citations: 1
Performance Evaluation of CubeSat Nanosatellite using LoRa in Low Earth Orbit B Uddin, LD Samsumar, PDP Adi, H Septanto, PDA Pamungkas, ... 2025 IEEE 11th Information Technology International Seminar (ITIS), 99-104 , 2025 2025 Citations: 1
Analisis Komparatif Kinerja Kontroler OpenDaylight dan POX pada Jaringan SDN Berdasarkan Parameter QoS LD Samsumar, Z Zaenudin, S Supardianto Jurnal Rekayasa Teknologi Informasi (JURTI) 9 (3), 273-281 , 2025 2025
Sistem Pengendali Listrik Menggunakan Arduino Nano dan Aplikasi Android M Saputra, LD Samsuma, Z Zenudin Jurnal Sistem Informasi dan Sains Teknologi 7 (2) , 2025 2025
Keamanan Informasi: Strategi Dan Teknik Perlindungan W Wasiran, LD Samsumar, A Ridwan, M Syahputra, AY Vandika YPAD Penerbit , 2025 2025
Sistem Informasi Manajemen: Strategi, Desain, dan Penerapan LD Samsumar, M Firdaus, VS Windyasari, S Rachendu, C Anwar, ... Hadla Media Informasi , 2025 2025 Citations: 1
Implementasi Jaringan Cisco: Routing, Switching, Dan Keamanan Y Putra, A Halim, H Wintolo, LD Samsumar, GB Sulistyo, A Impron, R Asri, ... CV GET PRESS INDONESIA , 2025 2025
Perancangan Sistem Pemberian Pakan Otomatis Pada Sapi Menggunakan Teknologi Internet Of Things MME Ismayani, Lalu Delsi Samsumar Journal of Computer Science and Technology (JOCSTEC) 3 (1), 1-8 , 2025 2025
MOST CITED SCHOLAR PUBLICATIONS
Keamanan Sistem Informasi: Perlindungan Data dan Privasi di Era Digital LD Samsumar, S Nasiroh, S Farizy, C Anwar, IH Mursyidin, R Rosdiyanto Keamanan Sistem Informasi: Perlindungan Data Dan Privasi Di Era Digital , 2025 2025.0 Citations: 58
IoT-Based Smart Room Using Web Server-Based Esp32 Microcontroller A Akbar, Z Zaenudin, Z Mutaqin, LD Samsumar Formosa Journal of Computer and Information Science 1 (2), 79-86 , 2022 2022.0 Citations: 55
Pengembangan Jaringan Komputer Nirkabel (Wifi) Menggunakan Mikrotik Router (Studi Kasus Pada Sma Pgri Aikmel) LD Samsumar, S Hadi Methodika 4 (1), 1-9 , 2018 2018.0 Citations: 27
Analisis dan Evaluasi Tingkat Keamanan Jaringan Komputer Nirkabel (Wireless LAN); Studi Kasus di Kampus STMIK Mataram LD Samsumar, K Gunawan Jurnal Ilmiah Teknologi Infomasi Terapan 4 (1), 73-82 , 2017 2017.0 Citations: 24
Pengaruh Sosial Media Pemasaran Terhadap Penjualan Hasil Industri Kerajinan Tenun Songket Rumahan Di Lombok Tengah LP Kembang, LD Samsumar Jurnal Manajemen Bisnis Krisnadwipayana 9 (1), 109-118 , 2021 2021.0 Citations: 18
Smart automatic feed: Sistem pakan otomatis pada kandang peternak ayam S Salman, R Muslim, LD Samsumar, A Akbar Jurnal Publikasi Teknik Informatika (JUPTI) 2 (2), 149-160 , 2023 2023.0 Citations: 17
Konsep dan Tantangan Penggunaan Teknologi e-Money Sebagai Alat Pembayaran Alternatif di Indonesia LD Samsumar Jurnal Teknik Informatika & Sistem Informasi METHODIKA, ISSN 2442-7861 2 … , 2016 2016.0 Citations: 16
& Kusumaningrum, A.(2025) LD Samsumar, M Firdaus, VS Windyasari, S Rachendu, C Anwar, F Haq Sistem informasi manajemen: Strategi, desain, dan penerapan , 0 Citations: 16
Sistem Monitoring dan Kontrol Rumah Pintar Berbasis Internet Of Things Untuk Peningkatan Efisiensi Energi LD Samsumar, Z Zaenudin, A Akbar, E Suryadi, BA Hidayatullah Jurnal Teknik Informatika dan Teknologi Informasi (JUTITI) 3 (2), 33-50 , 2023 2023.0 Citations: 14
RANCANG BANGUN SISTEM INFORMASI EVALUASI KINERJA DOSEN DALAM PERKULIAHAN UNTUK MENINGKATKAN KUALITAS PROSES PEMBELAJARAN (STUDI KASUS DI STMIK MATARAM) LD Samsumar, M Multazam, D Arwidiyarti Jurnal Teknologi Informasi dan Komunikasi 7 (Desember 2018), 74-87 , 2018 2018.0 Citations: 14
Optimalisasi praktik manajemen pemasaran melalui pemanfaatan teknologi digital di kalangan UMKM Desa Penujak, Lombok Tengah LP Kembang, A Kalbuadi, LD Samsumar, Z Zaenudin SEMAR: Jurnal Sosial Dan Pengabdian Masyarakat 1 (2), 59-71 , 2023 2023.0 Citations: 13
Implementasi Vulnerability Assessment Owasp (Open Web Application Security Project) Pada Website Universitas Teknologi Mataram D Supriadi, E Suryadi, R Muslim, LD Samsumar Journal of Data Analytics, Information, and Computer Science 1 (4), 232-240 , 2024 2024.0 Citations: 12
Pelatihan Ketarampilan Dasar Komputer Dan Teknologi Informasi Bagi Perangkat Desa Pemepek O Zaeniah, Z Muttaqin, LD Samsumar, M Budiamin, M Yusuf, UT Mataram Jurnal Pengabdian Kepada Masyarakat 2 (2), 1453-1458 , 2022 2022.0 Citations: 12
Penggunaan Aplikasi Cisco Untuk Desain, Simulasi, Dan Pemodelan Jaringan Komputer DL Samsumar, M Subli Jurnal Explore STMIK Mataram 9 (1), 24-30 , 2019 2019.0 Citations: 12
Konsep, Strategi, Dan Implementasi Teknologi Informasi Berbasis Cloud computing Pada Institusi Pendidikan Di Indonesia LD Samsumar, WW Ananda Konsep, Strategi, Dan Implementasi Teknologi Informasi Berbasis Cloud … , 2015 2015.0 Citations: 12
ANALISIS DAN PERANCANGAN PENJUALAN KAIN TENUN (KHAS BIMA) BERBASIS WEB MENGGUNAKAN MODEL RAD MZ Haidar, LD Bakti, LD Samsumar Jurnal Kecerdasan Buatan dan Teknologi Informasi (JKBTI) 1 (3), 11-17 , 2022 2022.0 Citations: 11
Pelatihan Pembuatan Website Bagi Staf Desa di Desa Teratak Kecamatan Batukliang Utara Kabupaten Lombok Tengah LD Samsumar, A Kalbuadi, B Imran Jurnal Karya Untuk Masyarakat (JKuM) 3 (2), 168-176 , 2022 2022.0 Citations: 11
Sistem Pemberian Pakan Ikan Otomatis Berbasis IOT LD Samsumar, H Hambali, Z Zaenudin Jurnal Penelitian Teknologi Informasi Dan Sains 1 (2), 80-90 , 2023 2023.0 Citations: 10
Membangun Literasi Digital Di Kalangan Siswa SD/MI, SMP/MTS Di Desa Setiling Kecamatan Batukliang Utara Kabupaten Lombok Tengah LD Samsumar, Z Zaenudin, LP Kembang, A Kalbuadi Jurnal Abdimas Darma Bakti 1 (1), 8-17 , 2022 2022.0 Citations: 9
PENGANTAR ILMU KOMPUTER : Teori Komprehensif Perkembangan Ilmu Komputer Terkini DD Rita Komalasari, Joan Angelina Widians, Budanis Dwi Meilani, Nofri Yudi ... 2023.0 Citations: 8
