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All Journal International Journal of Public Health Science (IJPHS) Jurnal Legalitas Jurnal Teknik Mesin Indonesia
Wijaya, Ahmad
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Aerospace Engineering Automotive Engineering Control & Systems Engineering Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering

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Smartphone addiction and adolescent mental health: a cross-sectional study in West Sumatra province Sarfika, Rika; Wijaya, Ahmad; Putri, Zifriyanthi Minanda; Saifudin, I Made Moh. Yanuar
International Journal of Public Health Science (IJPHS) Vol 13, No 2: June 2024
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijphs.v13i2.23318

Abstract

In West Sumatra Province, Indonesia, approximately 13.01% of individuals aged 15 years or older are affected by mental and emotional disorders, ranking it as the third highest among the 34 provinces. Excessive smartphone use has emerged as a potential influencer of mental health, associated with social networking addiction, shyness, and low self-esteem. This study aimed to examine the relationship between smartphone addiction and mental health issues in adolescents using a cross-sectional design. The sample included 283 randomly selected students aged 15-17 years. Smartphone addiction was measured using the smartphone addiction scale-short version (SAS-SV), and mental health was assessed using the strength and difficulties questionnaire (SDQ). The study revealed a significant association (p<0.001) between smartphone addiction and mental health problems among adolescents, with 72.1% of respondents experiencing smartphone addiction and 26.9% classified as having abnormal mental health. These findings emphasize the need for increased awareness regarding the negative impact of excessive smartphone use on adolescent mental health. Schools should play a vital role in addressing this issue through the provision of guidance and counseling services. Future research should investigate causal relationships using longitudinal designs and consider diverse populations to enhance the generalizability of the results.
Comparison Of Judicial Review: A Critical Approach To The Model In Several Countries Wijaya, Ahmad; Nasran, Nasran
JURNAL LEGALITAS Vol. 14, No. 2 (2021)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (634.05 KB) | DOI: 10.33756/jelta.v14i2.11809

Abstract

AbstractThe purpose of this study is to analyze the comparative model of judicial review in Indonesia and other countries. This research uses normative legal research. The approaches used by researchers in compiling this research are, among others: the legal approach; historical approach; and comparative approach. The results of this study indicate that in principle the constitutional review system in several countries shows a variety of color gradations that are tailored to the needs of each country. In general, there are 3 (three) constitutionality testing mechanisms that have been developed to date, namely: First, the constitutionality testing of laws is carried out by existing judicial institutions or non-special adjudication, namely the Supreme Court. The country that adopts this system is the United States of America. Second, the constitutionality test of the law is carried out by a special judicial institution, namely the Constitutional Court. Countries that have adopted this system are Indonesia, Germany, South Korea, South Africa, Russia, Thailand and Turkey. The constitutionality of the law is examined by non-judicial institutions. The country that adopted this system is France.
Pengembangan proses manufaktur tempa dingin untuk  paku ladam kuda Bagdja, Ade; Santoso, Gatot; Hartono, Rachmad; Lazuardi, Dedi; Nurfajar, Farid Budi; Muhammad, Adi; Wijaya, Ahmad; Fadillah, Muhammad Andre; Radiansyah, Arnold Muhammad; Alfriagi, Sandi; Hidayatullah, Rahmat; Ariffalah, Fajar
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026107

Abstract

Peminat Cabang olahraga Pacuan Kuda semakin meningkat di Indonesia. Perlengkapan yang digunakan oleh kuda salah satunya adalah Paku Ladam Kuda. Paku Ladam Kuda digunakan untuk menempelkan ladam pada kuku kuda seperti sepatu pada manusia. Paku Kuda ini masih diimpor. Permasalahan utama adalah teknologi yang dikuasai para Pandai Besi tradisionil, sehingga kualitas produk paku ladam kuda nya kurang konsisten. Untuk menjawab kebutuhan ini, dirancang rangkaian penelitian untuk mengembangkan proses manufaktur tempa dingin paku ladan kuda  yang dapat diimplementasikan oleh para Pandai Besi di Indonesia. Pada Penelitian ini dikembangkan satu set peralatan produksi untuk membuat paku ladam kuda yang terdiri dari satu (1) Drop Hammer serta enam (6) set pasangan cetakannya. Dari enam (6) set cetakan, terdiri dari satu (1) cetakan upsetting, dua (2) cetakan trimming dan empat (4) cetakan tempa dingin. Material cetakan menggunakan Baja S45C serta untuk paku ladam kuda menggunakan kawat timah Pb. Pengujian dilakukan pada 200 spes.imen awal untuk proses tempa I, tempa II, dan tempa III menghasilkan keberhasilan proses tempa sebesar 90%.
Co-Authors Alfriagi, Sandi Ariffalah, Fajar Bagdja, Ade Fadillah, Muhammad Andre Gatot Santoso Hartono, Rachmad Lazuardi, Dedi Muhammad, Adi Nasran, Nasran Nurfajar, Farid Budi Putri, Zifriyanthi Minanda Radiansyah, Arnold Muhammad Rahmat Hidayatullah Rika Sarfika Saifudin, I Made Moh. Yanuar