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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 SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA 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 INOVTEK Polbeng - Seri Informatika 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.
ANALISIS KANDUNGAN ELEKTOLIT DAN NON ELEKTROLIT PADA TANAMAN OBAT KELUARGA (TOGA) Jahro, Iis Siti; Simanullang, Selafionita; Hutagalung, Tien Parsaulian; Simanjuntak, Putrina; Sati, Naffa; Pratama, Muhammad Rizky; Daeli, Dinastini
SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA Vol. 5 No. 1 (2025)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/science.v5i1.4524

Abstract

The objectives of this study include to determine the content of electrolytes and non-electrolytes and determine the current strength in the solution of family medicinal plants. Electrolyte solutions have important benefits in human daily life, especially in foods consumed by humans that contain electrolytes and non-electrolytes. Electrolyte solutions are needed by the body so that organs can function such as the brain, nerves and muscles. The benefits of electrolytes are that they help maintain water balance and cell turgor pressure which is important for cell growth, electrolytes such as potassium, sodium, and calcium play a role in the transformation of nutrients and enzymes in plants. The benefits of non-electrolytes in plants as energy metabolism such as sugars and amino acids that play a role in the storage and use of energy, affecting the internal pH of cells and the environment. The tools used in this experiment include: multimeter, multitester prop cable, 1 9V battery, 1 small 2.5V lamp, 11 plastic cups, iron, chopper, cable, light fittings, scissors / cutter, tablespoon, sieve, grater, cardboard. Materials used are water, avocado fruit, pineapple fruit, banana fruit, lemongrass, turmeric, lemon fruit, pandan leaves, betel leaves, ginger, tomatoes, lime, and tissue. ABSTRAKTujuan penelitian ini antara lain untuk mengetahui kandungan elektrolit dan non-elektrolit serta mengetahui kuat arus pada larutan tanaman obat keluarga. Larutan elektrolit memiliki manfaat penting dalam kehidupan sehari-hari manusia terutama pada makanan yang dikonsumsi manusia yang mengadung elektrolit dan non elektrolit. Larutan elektolit dibutuhkan tubuh agar organ tubuh bisa berfungsi seperti otak, saraf dan otot. Adapun manfaat elektrolit yaitu membantu dalam menjaga keseimbangan air dan tekanan turgor sel yang penting untuk pertumbuhan sel, elektrolit seperti kalium, natrium,dan kalsium berperan dalam tranformasi nutrisi dan enzim dalam tanaman. Manfaat non- elektrolit pada tanaman sebagai metabolisme energi seperti gula dan amino yang berperan dalam penyimpanan dan penggunaan energi, mempengaruhi pH internal sel dan lingkungan. Alat yang digunakan dalam percobaan ini antara lain: multimeter,kabel prop multitester, 1 baterai 9V, 1 buah lampu kecil 2,5V, 11 buah cup plastik, besi, chopper, kabel, fitting lampu, gunting/cutter, sendok makan, saringan, parutan, kardus. Bahan yang digunakan air, buah alpukat, buah nenas, buah pisang, sereh, kunyit, buah lemon, daun pandan, daun sirih, jahe, tomat, jeruk nipis, dan tissue.
Forecasting Throughput Capacity on 5Ghz Wireless Radio Network Using Linear Regression Method Pratama, Muhammad Rizky; Armansyah, Armansyah
INOVTEK Polbeng - Seri Informatika Vol. 9 No. 2 (2024): November
Publisher : P3M Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/zj7aj967

Abstract

In an internet network, internet service providers must ensure the quality of the devices used is in good condition. One of the devices used is a 5GHz wireless radio where the stability of the fluctuating throughput capacity affects the quality of the device as a network transmission. This research uses machine learning with a simple linear regression model to predict the final throughput capacity based on the initial throughput and optimize it in the future. The regression model is used because it has a good accuracy level in forecasting. The data used is time series throughput data from the Ubnt Litebeam 5AC Gen.2 5GHz wireless radio device for the period of January-July 2024, using data split technique, data from January-June is used as training data and data from July as test data. The forecasting results obtained indicate the model's error rate measured using Mean Square Error (MSE) of 184,682 and Root Mean Squared Error (RMSE) of 13,589. From the forecasting results obtained, it can be used as a reference to evaluate the feasibility of wireless radio devices used by internet service provider for the future.
Co-Authors A Halim Ahmad Fuad Alfarel K, Muhammad Arkan Angelina, Natasya Armansyah Armansyah Aufa, Muhamad Gagah Awom, Ilan Ramond Azmi, Thalita Azriany, Dianra Azzahra, Nabila Basyarah, Rohan Daeli, Dinastini Daffa Muhammad Fauzan Damanik, Kezia May Kristy Br Dimas Ridho Fauzi, AH Fauzi Fayyaza, Khaira Freddy Tua Musa Panggabean Harjanti Widiastuti Hutagalung, Tien Parsaulian Iis Siti Jahro 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 SATI, NAFFA Silalahi, NH SIMANJUNTAK, PUTRINA 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