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This Author published in this journals
All Journal IAES International Journal of Artificial Intelligence (IJ-AI) ComEngApp : Computer Engineering and Applications Journal Jurnal Pendidikan Sosiologi dan Humaniora Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Jurnal KALAM Analisis: Jurnal Studi Keislaman Jurnal Script JAWI : Journal of Southeast Asia Islamic Contemporary Issues Jurnal Fisika FLUX Al-Adyan: Jurnal Studi Lintas Agama Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Kreativitas PKM Jurnal Consulenza : Jurnal Bimbingan Konseling dan Psikologi Jurnal Pembelajaran Pemberdayaan Masyarakat (JP2M) Community Development Journal: Jurnal Pengabdian Masyarakat Spektrum Sipil Jurnal Generic Journal of Electrical, Electronic, Information, and Communication Technology (JEEICT) Al-Iftah: Journal of Islamic studies and society Innovative: Journal Of Social Science Research ABDIKOM Socio Religia
Ahmad Zarkasi
Jurnal Studi Lintas Agama
Religion Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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The Use of Sea Sand as a Substitute for Fine Aggregate in High-Strength Concrete Hidayati, Nurul; Hariyadi, Hariyadi; Zarkasi, Ahmad; Kusuma, Muhammad Holikul Bahari
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 11, No 1 (2026): EDISI MARET 2026
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v11i1.8066

Abstract

Concrete is a common construction material whose quality depends on parameters such as compressive strength and split tensile strength. To reduce the environmental impact of river sand use, this study evaluates the use of sea sand as a partial replacement for fine Aggregate. Although sea sand contains salt, special treatment can reduce its salt content and is expected to improve the quality of high-grade concrete. The objectives of this study were to assess the impact of sea sand on the mechanical strength of concrete and to determine the optimum percentage of sea sand in high-quality concrete mixtures. This study used compressive strength, split tensile strength, and shear strength testing methods with variations in sea sand content in concrete mixtures of 0%, 25%, 50%, and 100%. The tests were conducted using a Compression Testing Machine (CTM). The results showed that using sea sand reduced the mechanical strength of concrete. Compressive strength decreased from 43.09 MPa to 29.91 MPa, splitting tensile strength decreased from 4.23 MPa to 1.21 MPa, and shear strength decreased from 10.23 MPa to 5.97 MPa with an increase in the percentage of sea sand. Therefore, it can be concluded that although sea sand can be used, its use in large quantities reduces the mechanical strength of concrete. The optimum percentage must be adjusted to balance sustainability and structural strength.
Implementation of Finger Gesture-Based Medicine Delivery Robot Control System with MediaPipe Zarkasi, Ahmad; Pradnyananda, Gede; Sembiring, Sarmayanta; Prasetyo, Aditya P. P.; Ricy Firnando, Ricy; Abdurahman, Abdurahman
Journal of Electrical, Electronic, Information, and Communication Technology Vol 8, No 1 (2026): JOURNAL OF ELECTRICAL, ELECTRONIC, INFORMATION, AND COMMUNICATION TECHNOLOGY
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jeeict.8.1.108142

Abstract

This research introduces a prototype drug delivery robot that is controlled entirely through finger gestures, without the need for direct touch or additional physical control devices. The system utilizes a Pi Camera connected to a Raspberry Pi to capture the image of the user's hand, which is then processed by MediaPipe Hands to perform detection and extraction of 21 point landmarks in real-time. The position and relationship between landmarks are converted into a five-bit binary vector that represents which finger is raised. This binary data is then sent via serial communication to the STM32 Nucleo microcontroller, which is tasked with translating the binary pattern into motion commands (forward, backward, turn right/left, stop) to drive the DC motor. The results of testing the gesture recognition system, which was performed 30 times for each command, showed a high success rate. The gesture Stop achieved perfect success (30/30), followed by 'Forward' and 'Right' with 10 successes, and 'Backward' and 'Left' with 9 successes. This test shows that the system is able to respond accurately to gesture commands at a distance of 20 to 250 cm. The robot was also able to execute all motion commands responsively and accurately according to the recognized gestures. This prototype proves that MediaPipe can be an efficient and reliable method to implement gesture-based robot control on resource-constrained embedded platforms, as well as potentially applied in healthcare environments to minimize physical contact.
Co-Authors -, Abdurahman - Abda Abda Abdurahman Abdurahman Abdurahman . Adi Hermansyah, Adi Aditya P. P. Prasetyo, Aditya P. P. Adryan Fitrayudha Agustam Agustam Almuqsit, Alif Amanda, Anggun Diah Amelia, Dinda Risky Andi Eka Putra Anwar Efendy Arief Setiawan, Nugroho Aroby, Sudhan Athalaza, Muhammad Nawar Aulia Muttaqin Baehaqi Bhakti Yudho Suprapto Bintar Asror Syaffutra Deris Stiawan Dhiafah Hera Darayani Duri, Ades Harafi Ellya Rosana Erna Kumalasari Fadli Isnanto, Rahmat Fariyadin, M. Ruslin Anwar, Indradi Wijatmiko, Adiman Fitriyanto, Megi Hadi Purnawan Satria Hadipurnawan Satria Hamdani, Hafiz Hariyadi, Hariyadi Heni Pujiastuti Heriyanto, Ahmad Heru, M. Hidayati, Ira Huda Ubaya Idrus Ruslan Joni Safaat Adiansyah Kalsum, Afif Umi Kemahyanto Exaudi Kholis Nurhanafi Kusuma, Muhammad Holikul Bahari Mega Fatimah Rosana Mita Amalia, Shaffina Muhammad Afif Naniek Widyastuti Ni Nyoman Kencanawati Novianti, Intan Nurul Hidayati Osvari Arsalan P.P Prasetyo, Aditya Pradnyananda, Gede Primanita, Anggina Ramli, Azhar Jaafar Ricy Firnando, Ricy Rizki Kurniati Romadhona, Londa Arrahmando Salim, Luthfi Sari, Putri Winda Sarmayanta Sembiring Sasmito Setiawati, Susi Siti Nurmaini Sudarman Suhendri Suhendri Sutarno Sutarno Sutarno Syafrimen Syafril Syahrir Syahrir Syarif Hidayatullah Wahyudi, Mudji winarti, dwi Y. A. P, Kadek Dwivayana Yesi Novaria Kunang Yudha, Gesit Yudi, Endang Darmawan