Dynamic content synchronization between learning management systems over limited bandwidth network. - Royyana M. Ijtihadie; Bekti C. Hidayanto; Achmad Affandi; Yoshifumi Chisaki; Tsuyoshi Usagawa (Hum. centric Comput. Inf. Sci., 2012)

Dynamic synchronization of learning contents of distributed learning management systems over band limited network - Contents sharing between distributed Moodle 2.0 series. - Tsuyoshi Usagawa; Masahiro Yamaguchi; Yoshifumi Chisaki; Royyana Muslim Ijtihadie; Achmad Affandi (ITHET, 2013)

Falls Detection and Notification System Using Tri-axial Accelerometer and Gyroscope Sensors of a Smartphone. - Waskitho Wibisono; Dedy Nur Arifin; Baskoro Adi Pratomo; Tohari Ahmad; Royyana M. Ijtihadie (TAAI, 2013)

Shared secret-based steganography for protecting medical data. - Tohari Ahmad; Hudan Studiawan; Hafidh Sholihuddin Ahmad; Royyana M. Ijtihadie; Waskitho Wibisono (IC3INA, 2014)

A Mobile Crowdsensing Framework for Integrating Smartphone and IoT Devices to Cloud Computing Services. - Waskitho Wibisono; M. Divi Jaya Nuryanto; Royyana M. Ijtihadie; Tohari Ahmad; Radityo Anggoro (MobiQuitous, 2017)

Protecting Data by Improving the Performance of Controlling Expansion Method. - Tohari Ahmad; Herdito Ibnu Dewangkoro; Waskitho Wibisono; Royyana Muslim Ijtihadie (ACeS, 2020)

Reversible data hiding based on histogram and prediction error for sharing secret data. - Chaidir Chalaf Islamy; Tohari Ahmad; Royyana Muslim Ijtihadie (Cybersecur., 2023)

Load Characterization of AI Applications using DQoES Scheduler for Serving Multiple Requests. - Taufiq Odhi Dwi Putra; Royyana Muslim Ijtihadie; Tohari Ahmad (ISDFS, 2024)

HSDetect-Net: A Fuzzy-Based Deep Learning Steganalysis Framework to Detect Possible Hidden Data in Digital Images. - Jean De La Croix Ntivuguruzwa; Tohari Ahmad; Fengling Han; Royyana Muslim Ijtihadie (IEEE Access, 2025)

Ensemble Network Graph-Based Classification for Botnet Detection Using Adaptive Weighting and Feature Extraction. - Muhammad Aidiel Rachman Putra; Tohari Ahmad; Dandy Pramana Hostiadi; Royyana Muslim Ijtihadie (IEEE Access, 2025)