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All Journal Journal of Accounting and Investment Jurnal Laut Khatulistiwa PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat JURNAL TAHURI Matrik : Jurnal Manajemen dan Teknik Industri Produksi Fidelity : Jurnal Teknik Elektro INTERNATIONAL JOURNAL OF MECHANICAL COMPUTATIONAL AND MANUFACTURING RESEARCH Aurelia: Jurnal Penelitian dan Pengabdian Masyarakat Indonesia JPLED Kultura: Jurnal Ilmu Sosial dan Humaniora Cendikia: Jurnal Pendidikan dan Pengajaran VISA: Journal of Vision and Ideas SAKOLA: Journal of Sains Cooperative Learning and Law Annaba: Jurnal Ilmu Jurnalistik
Pratama, Muhammad Rizky
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Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology 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 Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Desain dan Analisis Bracket Winch Car Kendaraan Taktis 4x4 Menggunakan Metode Elemen Hingga Pratama, Muhammad Rizky; Awom, Ilan Ramond; Ramang R, Dhanny; Pratama, M Daffa Agung; Daffa Muhammad Fauzan
VISA: Journal of Vision and Ideas Vol. 5 No. 2 (2025): Journal of Vision and Ideas (VISA)
Publisher : IAI Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/visa.v5i2.7815

Abstract

This research designs and analyzes the Bracket Winch Car for a 4x4 tactical vehicle. The Finite Element Method (FEM) is used to obtain the stress results, followed by calculating the Safety Factor using CAD software. The Bracket Winch Car design, made from AISI 4340 material, demonstrates the ability to safely withstand the load of the WARN VR EVO 10-S winch. Simulations are conducted with loading conditions corresponding to the maximum pull weight of the winch, with a value of 44,452.8 N. The safety factor obtained is 1.695, indicating that the design is safe and suitable for use in tactical vehicles.
Structural analysis of the Wing of UCAV (Unmanned Cargo Aerial Vehicle) using finite element method Fauzi, AH Fauzi; Pratama, Muhammad Rizky; Silalahi, NH
International Journal of Mechanical Computational and Manufacturing Research Vol. 14 No. 2 (2025): August: Mechanical Computational And Manufacturing Research
Publisher : Trigin Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/computational.v14i2.273

Abstract

This study analyzes and optimizes the wing structure design of an Unmanned Cargo Aerial Vehicle (UCAV) using the Finite Element Method (FEM). The initial structural assessment shows that the maximum stress of 566.83 MPa occurs at the wing root, resulting in a minimum safety factor of 0.67 which is well below the acceptable threshold of 1.8, as defined by the C.A.S.A Australia Subpart C standard. The maximum displacement amplitude was recorded at 3.81 mm, indicating potential structural failure under operational loads. To improve structural performance, modifications were implemented by increasing the thickness of ribs and spars in critical sections. The redesigned model reduced the maximum stress to 99.97 MPa, raised the minimum safety factor to 1.9, and decreased the maximum displacement amplitude to 0.672 mm. These findings confirm that the modified UCAV wing design achieves compliance with safety standards, enhances structural integrity, and demonstrates improved reliability under operational conditions.
Digital Gaming and Informal English Language Acquisition: Identity, Interaction, and Fluency Development among Indonesian Youth Santosa, Rika; Pratama, Muhammad Rizky
Jurnal Tahuri Vol 22 No 2 (2025): August 2025
Publisher : Jurusan Pendidikan Bahasa dan Seni FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/tahurivol22issue2page83-101

Abstract

This study explores how international online gaming communities serve as informal spaces for English language learning among Indonesian adolescents, focusing on communicative practices, fluency development, and linguistic identity formation. The study is motivated by the limited opportunities for authentic communication in Indonesian secondary schools, where English learning remains predominantly grammar- and exam-oriented. Employing a qualitative case study design, the research involved ten high school students in Jakarta who were active members of the Airaworlf gaming community. Data were collected through participant observation during international gaming sessions, voice chat recordings, chat log analysis, and in-depth interviews exploring participants’ experiences and perceptions of language learning through gaming. Thematic analysis was applied to identify communicative patterns, linguistic strategies, and socio-technological factors influencing language acquisition. The findings reveal that online gaming fosters spontaneous, contextual, and collaborative use of English. Participants demonstrated improvements in fluency, mastery of technical vocabulary, and intercultural communicative competence. English was used not only for strategic coordination but also to build team solidarity and negotiate identities in global digital spaces. Key enabling factors include intrinsic motivation, real communicative needs, international exposure, and supportive peer environments, while challenges involve exposure to impolite language and the absence of pedagogical guidance. The study highlights international gaming communities as authentic ecosystems for informal language learning in Indonesia, revealing the emergence of hybrid linguistic identities. It contributes to applied linguistics and foreign language education, particularly within Computer-Assisted Language Learning (CALL) and digital informal learning.
Analisis Pemahaman Kognitif Mahasiswa terhadap Materi Stoikiometri melalui Soal Pilihan Ganda: Kajian pada Mahasiswa Pendidikan Kimia Panggabean, Freddy Tua Musa; Ridho, Dimas; Pratama, Muhammad Rizky; Simanullang, Selafionita; Damanik, Kezia May Kristy Br; Azriany, Dianra
SAKOLA: Journal of Sains Cooperative Learning and Law Vol 2, No 2 (2025): Oktober 2025
Publisher : CV. Rayyan Dwi Bharata

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57235/sakola.v2i2.6029

Abstract

Penelitian ini bertujuan untuk menganalisis tingkat pemahaman kognitif mahasiswa Pendidikan Kimia terhadap materi stoikiometri melalui pengerjaan soal pilihan ganda. Materi stoikiometri dipilih karena menuntut penguasaan konseptual sekaligus keterampilan numerik dalam menyelesaikan persoalan kuantitatif kimia. Penelitian menggunakan pendekatan deskriptif kuantitatif dengan sampel sebanyak 20 mahasiswa dan instrumen berupa 10 soal pilihan ganda yang menguji berbagai aspek penting seperti hukum dasar kimia, konsep mol, identifikasi reaktan pembatas, dan perhitungan rendemen reaksi. Hasil penelitian menunjukkan bahwa skor rata-rata yang diperoleh mahasiswa adalah 6,3 dari 10, dengan variasi tingkat penguasaan antar individu. Lima soal dikategorikan mudah, tiga soal sedang, dan dua soal tergolong sulit. Selain itu, analisis korelasi menunjukkan adanya keterkaitan antar soal yang mengukur konsep serupa, sekaligus mengungkap beberapa soal yang perlu direvisi karena rendahnya daya beda. Penelitian ini merekomendasikan pengembangan pembelajaran kontekstual dan asesmen formatif berbasis analisis data untuk meningkatkan kualitas pemahaman stoikiometri mahasiswa.
Co-Authors A Halim Ahmad Fuad Alfarel K, Muhammad Arkan Angelina, Natasya Aufa, Muhamad Gagah Awom, Ilan Ramond Azmi, Thalita Azriany, Dianra Azzahra, Nabila Basyarah, Rohan Daffa Muhammad Fauzan Damanik, Kezia May Kristy Br Fauzi, AH Fauzi Fayyaza, Khaira Freddy Tua Musa Panggabean Harjanti Widiastuti Ismu Kusumanto Kurnia, Wulan Kushadiwijayanto, Arie Antasari Kusuma, Rifa Jivi Manalu, Ronald Melfa Yola, Melfa Muhaemin, Enjang Mulyadi Mulyadi Nabila D, Nurul Yumna Pratama, M Daffa Agung Putra, Muhammad Rizky Ramadhani, Azzikra Fizaluria Ramang R, Dhanny Rika, Rika Salsabilla, Tegar Vania Santosa, Rika Saragih, Ferdinan Silalahi, NH Simanullang, Selafionita Sri Yunita Subakdi, Subakdi Suherman, Suherman Tama, Gita Citra Tambunan, Alif Hakiim Parulian Tarigani, Adisastra Pengalaman Utami, Evy Rahman Wibowo, Pristisal Yafie, Muhammad Yurinda, Aisyah Yusuf Arief Nurrahman