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All Journal International Journal of Electrical and Computer Engineering IAES International Journal of Artificial Intelligence (IJ-AI) International Journal of Reconfigurable and Embedded Systems (IJRES) ComEngApp : Computer Engineering and Applications Journal Jurnal Rekayasa Mesin Jurnal Energi Dan Manufaktur AUSTENIT Jurnal Mechanical Proceeding of the Electrical Engineering Computer Science and Informatics Science and Technology Indonesia Prosiding Seminar Nasional Teknoka Indonesian Journal of Electrical Engineering and Computer Science Prima Abdika: Jurnal Pengabdian Masyarakat Indonesian Journal of Engineering and Science (IJES) Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Bulletin of Applied Mathematics and Mathematics Education MIMBAR INTEGRITAS Jurnal Pelita Sriwijaya Prosiding Seminar Nasional Unimus Bulletin of Engineering Science, Technology and Industry
Irsyadi Yani
Department Of Mechanical Engineering, Faculty Of Engineering, Sriwijaya University, Palembang, 30139, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Other

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PENGUATAN LITERASI SAINS MELALUI PENGENALAN METODE STATISTIKA UNTUK DATA HILANG Kresnawati, Endang S.; Resti, Yulia; Dewi, Novi R.; Yani, Irsyadi; Marwani, Marwani
Jurnal Lentera Nusantara Vol 4 No 1 (2025): Jurnal Pelita Sriwijaya
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v4i1.181

Abstract

Kemampuan literasi sains yang baik berkontribusi secara signifikan terhadap kemajuan bangsa. Sebagai generasi penerus, sepatutnya siswa Sekolah Mengengah Atas (SMA) dibekali banyak pengetahuan guna meningkatkan literasi sains yang mereka miliki termasuk dalam menangani data atau pengamatan yang hilang, mengingat saat ini merupakan era big data. Kegiatan pengabdian yang dilaksanakan ini bertujuan mengenalkan metode-metode statistika dalam mengatasi data hilang. Pengetahuan ini diharapkan dapat menguatkan literasi sains siswa SMA Kartini Palembang, yang merupakan sekolah swasta yang berada sekitar 1 km di belakang kampus Universitas Sriwijaya. Sekolah ini memiliki akreditasi B dan fokus untuk peminatan IPA. Berdasarkan pra-test dan post-test terkait pengetahuan dasar tentang metode statistika dalan menangani daa hikang, hasil kegiatan menunjukkan bahwa literasi sains dan numerasi khalayak sasaran meningkat signifikan. Uji beda rata-rata kedua kelompok nilai pra-test dan post-test dengan tingkat signifikansi 5 % untuk khalayak sasarn menunjukkan bahwa kedua kelompok memiliki perbedaan yang signifikan, Hasil ini juga menginfomasikan bahwa rata-rata nilai post-test secara signifikan mengalami peningkatan. Artinya kegiatan kegiatan pengabdian kepada masyarakat ini memberikan implikasi yang signifikan terhadap peningkatan kemampuan literasi dan numerasi mereka.
Demonstrasi Gasifikasi Tempurung Kelapa pada Masyarakat Desa Vidian, Fajri; Fitriani, Heni; Arief, Taufik; Alian, Helmy; Yani, Irsyadi; Hadi, Qomarul; Thamrin, Ismail; Zulkarnain, Zulkarnain; Manik, Dion Daud; Rasyid, Abdul; Simarmata, Johanes; Situmeang, Abetnego; Paroluan, Brian Einstein; Doloksaribu, Mikael
Prima Abdika: Jurnal Pengabdian Masyarakat Vol. 4 No. 1 (2024): Volume 4 Nomor 1 Tahun 2024
Publisher : Program Studi Pendidikan Guru Sekolah Dasar Universitas Flores Ende

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/abdika.v4i1.3716

Abstract

The dedication to this activity was prompted by the lack of awareness about the potential use of coconut shells as gas fuel, like LPG, in Tebing Gerinting Selatan Village, as well as in Ogan Ilir Villages in general. The main aim of this activity is to educate the community in Tebing Gerinting Selatan on the technology of converting coconut shells into gas fuel using gasification technology. The educational process includes presentations, demonstrations, and discussions. During the demonstration phase, participants were shown how to operate coconut shell gasification equipment to produce gas fuel. The results of this activity were very encouraging as many participants showed a keen interest in the process and equipment used during the discussion phase. Based on the success of this activity, it can be concluded that there is a high level of public interest in coconut shell gasification technology, and there is a strong desire to apply this equipment to the kerupuk kemplang grilling process in the village.
BESARAN ENERGI AKTIVASI DARI OKSIDASI HASIL PENGECORAN ALUMINIUM KALENG MINIMUM YANG MENDAPAT PERLAKUAN PANAS QUENCHING DAN ANNEALING Nukman, Nukman; Dahlan, Muhammad; Firdaus MS, Firdaus M S; Yani, Irsyadi; Arifin, Amir
AUSTENIT Vol. 11 No. 2 (2019): AUSTENIT: Oktober 2019
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (561.212 KB)

Abstract

Thermogravimetry analyzer adalah suatu alat untuk melakukan analisa thermal dimana massa bahan uji akan berbanding terbalik atau berbanding lurus dengan laju temperatur yang meningkat dan fungsi waktu (temperatur meningkat konstan). TGA biasanya digunakan untuk menentukan karakteristik material. Kurva naiknya massa material Aluminium dapat digunakan untuk mengetahui oksidasi. Titik naiknya massa material bisa digunakan untuk menghitung energi aktivasi. Penelitian ini menggunakan alat Thermogravimetry Analyzer (TGA) Exstar SII 7300 dengan 3 (tiga) sampel yang berbeda yaitu: Sampel Non Heat Treatment, Sampel Quenching, Sampel Annealing.  Hasil pengujian didapatkan bahwa energi aktivasi pada keadaan temperatur 400-6500C ramp 10 pada sampel non heat treatment E = 30,137 kJ/mol. Pada quenching E = 23,537 kJ/mol. Pada annealing E = 28,373 kJ/mol.
BIOCOMPATIBLE P(TM co SA-CAA) HYDROGELS WITH pH RESPONSIVE AND ENHANCED MECHANICAL PERFORMANCE Gustini, Gustini; Kaprawi, Kaprawi; Basri, Hasan; Irmawan, Irmawan; Yani, Irsyadi; Paramita Eka Utami, Nurhabibah
AUSTENIT Vol. 15 No. 2 (2023): AUSTENIT: October 2023
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v15i2.7536

Abstract

In recent years, development of hydrogel that combines biocompatibility, pH responsive and mechanical performance has attracted the attention of researchers. A novel biocompatible hydrogel, composed of P(TM co SA) and P(TM co CAA) was synthesized by a simple admixture and heating process. The results show that with increasing levels of SA-CAA monomer concentration, an increase in tensile strength and elongation at breakpoint was observed and optimal at the ratios P(TM co SA CAA). Tensile strenght and young’s modulus registered an impressive increase of 43% and 40% respectively. These improvements are attributed to strong synergistic hydrogen bonding interactions between the TM and SA-CAA chains. During the experiment, maximum increase in weight was also achieved at pH 10 NaOH solution, it is show the pH-responsive hydrogels. The investigation of P(TM co SA-CAA) hydrogel mechanism showed that more homogenous dispersed through crosslinks dominated by β-sheets from Amide I structures. Furthermore, the SA-CAA molecules contributed to the biocompatibility, pH responsive and mechanical performance of P(TM co SA-CAA) hydrogels. Conclusively, its P(TM co SA-CAA) hydrogels clearly demonstrated the relevance of the provide a bioresponsive material for biomedical applications, such as tissue engineering, regenerative medicine and pH-sensitive drug delivery.
IMPLEMENTASI 3D PRINTING DALAM PEMBELAJARAN TEKNIK DI SMK YPK GAJAH MADA PALEMBANG Arifin, Amir; Saputra, M. A. Ade; Yani, Irsyadi; Prakoso, Akbar Teguh; Gunawan, Gunawan; Basri, Hasan; Zahir, Muhammad; Thamrin, Ismail; Astuti, Astuti
Jurnal Lentera Nusantara Vol 4 No 2 (2025): Jurnal Pelita Sriwijaya: In Progress
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/jps.v4i2.203

Abstract

Perkembangan teknologi pada era Revolusi Industri 4.0 menuntut lulusan Sekolah Menengah Kejuruan (SMK) memiliki kompetensi di bidang manufaktur berbasis digital, salah satunya teknologi 3D printing tipe fused deposition modeling (FDM). Kegiatan pengabdian kepada masyarakat ini bertujuan meningkatkan pemahaman dan keterampilan guru SMK YPK Gajah Mada Palembang dalam merancang dan mengoperasikan mesin cetak 3D serta memanfaatkannya sebagai media pembelajaran teknik. Metode yang digunakan diawali dengan survei kebutuhan dan wawancara untuk memetakan pengetahuan awal dan kesiapan guru terhadap teknologi 3D printing, dilanjutkan dengan pelatihan terstruktur yang mencakup pengenalan perangkat lunak CAD, proses slicing menggunakan Ultimaker Cura, pengaturan parameter pencetakan, hingga praktik langsung mencetak produk sederhana seperti komponen transmisi dan gantungan kunci. Evaluasi dilakukan melalui kuesioner dan wawancara setelah pelatihan. Hasil kegiatan menunjukkan bahwa peserta memperoleh pemahaman yang baik terhadap alur kerja 3D printing, merasa cara penyampaian dan isi materi mudah diikuti, serta 70% guru menyatakan akan mencoba menerapkan 3D printing sebagai media pembelajaran di kelas. Selain itu, penyerahan satu unit mesin cetak 3D kepada sekolah mendukung keberlanjutan implementasi teknologi ini. Secara keseluruhan, program pelatihan efektif dalam memperkuat kompetensi guru dan mendorong integrasi teknologi manufaktur aditif dalam pembelajaran teknik di SMK.
Classification of weather events in Lahat regency using the K-Nearest Neighbor method Kresnawati, Endang Sri; Resti, Yulia; Eliyati, Ning; Zayanti, Des Alwine; Dewi, Novi Rustiana; Yani, Irsyadi
Bulletin of Applied Mathematics and Mathematics Education Vol. 5 No. 2 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/bamme.v5i2.14613

Abstract

Weather event classification in a region is very important for various purposes, such as in the fields of transportation, health, agriculture, and others. Lahat has varying land elevations ranging from 26-106 meters above sea level in the East Merapi sub-district to 341-3032 meters above sea level in the Tanjung Sakti Pumi sub-district. It greatly affects local temperature, rainfall, and atmospheric pressure, which in turn affects the distribution of weather patterns and disasters such as floods. KNN is a prediction method that uses the concept of distance for a number of k nearest observations in determining the similarity between observations. Several metrics can be used for this prediction purpose. This study aims to predict weather events in Lahat Regency using the KNN method with several different distance metrics and then compare them to obtain the performance of the KNN prediction method. The results show that the Euclidean distance metric used in the KNN method has a better performance measurement, followed by the Manhattan and Minkowski metrics. In the Euclidean metric, the accuracy, precision, recall, f1-score, AUC, and MC value are 92.69%, 88.21%, 85.81%, 86.99%, 88.99%, and 76.37%, respectively.
Enhancing Management Students’ Competencies through Digital Learning Innovation: The Use of Artificial Intelligence and Canva Rahma Febrianti; Irsyadi Yani; Tri Yusnanie; Mu'izzuddin Mu'izzuddin
MIMBAR INTEGRITAS : Jurnal Pengabdian Vol 5 No 2 (2026): Februari - Agustus
Publisher : Biro Administrasi dan Akademik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/mimbarintegritas.v5i2.8324

Abstract

The rapid development of digital technology, particularly Artificial Intelligence (AI), requires students to possess adequate digital literacy competencies in the learning process. However, its utilization remains largely technical and has not been optimally integrated to enhance academic quality. This community service activity aims to improve the competencies of Management students through digital learning innovation by utilizing AI and Canva in developing academic presentation materials. The activity was implemented through training and mentoring in the form of a mini workshop, which included the introduction of AI, effective prompt construction, and hands-on practice in creating presentation materials using Canva. The program was conducted with undergraduate Management students and evaluated using questionnaires to assess participants’ understanding, skills, and satisfaction. The results indicate a significant improvement in students’ ability to systematically develop academic content using AI, as well as increased creativity in designing presentations through Canva. In addition, students demonstrated a better understanding of the ethical and responsible use of AI in academic contexts.This activity implies that the integration of AI and digital design tools can enhance learning quality, foster creativity, and strengthen students’ digital competencies. Therefore, the use of AI and Canva as digital learning innovations is effective in improving students’ academic competencies and digital literacy, while also preparing them to face the challenges of learning in the digital transformation era.
UNCERTAINTY ANALYSIS OF PRESSURE GAUGE CALIBRATION: COMPARISON OF THE GUM AND MONTE CARLO METHODS Aidil Arief Ananta; Irsyadi Yani; Barlin
Bulletin of Engineering Science, Technology and Industry Vol. 4 No. 3 (2026): September
Publisher : PT. Radja Intercontinental Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This paper presents a comparative uncertainty analysis of pressure gauge calibration using the Guide to the Expression of Uncertainty in Measurement (GUM) method and the Monte Carlo Simulation method. Pressure gauge calibration was conducted over a range of 0 to 25 bar to determine indication errors and their associated measurement uncertainties, which are vital for metrological traceability. The study evaluates several uncertainty contributors, including reference standard uncertainty, repeatability, resolution, zero deviation, and hysteresis. While the GUM approach utilizes a standard analytical framework based on linear approximations, the Monte Carlo method provides a probabilistic propagation of input distributions through 1,000,000 numerical iterations. The results demonstrate a high level of agreement between the two methods, with differences in expanded uncertainty remaining below 5% across the investigated range. Hysteresis and repeatability were identified as the dominant uncertainty components, particularly at higher pressure points. The findings confirm that the analytical GUM approach is reliable for this linear calibration model, while the Monte Carlo simulation serves as an effective complementary tool for validating complex or non-linear measurement problems.
Analisis Kegagalan Roda Gigi Pinion di Main Drive Belt Conveyor risky u Utama Putra; Jimmy Deswidawansyah Nasution; Zulkarnain; Roy Reeverdy; M. A. Ade Saputra; Amir Arifin; Irsyadi Yani; Gunawan; Akbar Teguh Prakoso; Diah Kusuma Pratiwi
Jurnal Rekayasa Mesin Vol. 26 No. 1 (2026): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/b0k7ps03

Abstract

Roda gigi pinion pada main drive belt conveyor PT Bukit Asam mengalami kegagalan setelah tiga bulan operasi, jauh di bawah umur pakai yang direncanakan selama dua tahun. Penelitian ini bertujuan mengidentifikasi akar penyebab kegagalan melalui observasi lapangan, pemeriksaan visual, pemetaan kekerasan Vickers pada sepuluh titik, pengamatan metalografi, estimasi kekuatan material, dan simulasi metode elemen hingga (FEM). Kekerasan aktual berada pada rentang 297-334 HV, lebih rendah daripada spesifikasi desain 445-520 HV. Mikro struktur didominasi ferrite-pearlite tanpa lapisan martensit dan tanpa gradien pengerasan dari permukaan ke inti, yang menunjukkan bahwa surface hardening tidak dilakukan atau tidak mencapai spesifikasi. Simulasi kontak awal menghasilkan tegangan von Mises maksimum 1523 MPa, lebih tinggi daripada estimasi kekuatan tarik aktual maksimum sekitar 1092 MPa, sehingga konsisten dengan terjadinya plastic flow/swaging pada flank. Pemodelan geometri setelah plastic flow menunjukkan tegangan maksimum 397,2 MPa terkonsentrasi pada root fillet. Mekanisme kegagalan diawali oleh tegangan kontak berulang pada flank, diikuti perataan profil gigi, redistribusi beban ke root fillet, inisiasi retak fatigue, dan fraktur. Akar penyebab utama adalah tidak tercapainya kekerasan permukaan akibat surface hardening yang tidak dilakukan atau tidak optimal.
Co-Authors Abdul Rasyid Ade Silvia Ade Silvia Ade Silvia Handayani Agung Mataram Ahmad Irham Jambak Aidil Arief Ananta Akbar Teguh Prakoso Ali Amran Ali Syahbana Alwine Zayanti, Des Amir Arifin Amir Arifin Amir Arifin Amrifan Saladin Mohruni Aneka Firdaus Ansyori Ansyori Ansyori Ansyori Ansyori Yani Anthony Costa Astuti Astuti ASTUTI ASTUTI Bambang Suprihatin Barlin BARLIN BARLIN Barlin Barlin Barlin Barlin Barlin Oemar Chandra Irsan Chandra Irsan Chandra Irsan Dendy Adanta Des Alwine Zayanti Des Alwine Zayanti, Des Alwine Des Alwine Zayantii Dewi Puspita Sari Dewi Puspitasari DEWI PUSPITASARI Dewi, Novi R. Dewi, Tresna Diah Kusuma Pratiwi Diah Kusuma Pratiwi Doloksaribu, Mikael Donny Sahala Tua Sitorus Eka Utami, Nurhabibah Paramitha Ekawati Prihatini Ellyanie Ellyanie Endang Sri Kresnawati Eric Rahman Fadhian Fadhillah Siregar Fajri Vidian Falah Yuridho Firdaus MS, Firdaus M S Firmansyah Burlian Firmansyah Burlian Firmansyah Burlian Firmansyah Burlian Firmansyah Burlian Gunawan Gunawan Gunawan Gunawan Gunawan Gunawan GUNAWAN GUNAWAN Gunawan Gunawan Gustini, Gustini Hasan Basri helena astari Helmy Alian Heni Fitriani Hoiri, Sajiril Husni, Nyayu Latifah Husni, Nyayu Latifah Indah Meiliana Sari Irmawan Irmawan Ismail Thamrin Ivfransyah Jeremy Firdaus Latif Jhosua Arie S Jhosua Arie Swandi Jimmy Deswidawansyah Nasution Kaprawi Kaprawi Kresnawati, Endang S. Lugantha Perkasa M. A. Ade Saputra M. A. Ade Saputra M. A. Ade Saputra M.A. Ade Saputra Manik, Dion Daud MARWANI Marwani Marwani, Marwani Mega Fatimah Rosana Mega Tiara Putri MS, Firdaus Mu'izzuddin Mu'izzuddin Muflika Amini Muhammad Dahlan Muhammad Yanis Muhammad Yanis Muhammad Zahir Ning Eliyati Nova Yuliasari Novi Rustiana Dewi Novi Rustiana Dewi Nukman Nukman Nukman NUKMAN NUKMAN NURHABIBAH PARAMITHA EKA UTAMI Nyayu Latifah Husni Nyayu Latifah Husni, Nyayu Latifah Paramita Eka Utami, Nurhabibah Paroluan, Brian Einstein Qomarul Hadi Rahma Febrianti Rahmayani, Mau’izatil Resnawati risky u Utama Putra Rossi Passarella Roy Reeverdy Saputra, M. A. Ade Saputra, M.A. Ade Setyo Cahyono, Endro Simarmata, Johanes Siti Nurmaini Situmeang, Abetnego Sri Kresnawati, Endang Sugandi Yahdin Sulong, Abu Bakar Taufik Arief Tresna Dewi Tri Yusnanie Yulia Resti Zayanti, Des A. Zulkarnain Zulkarnain Ali Leman Zulkarnain Zulkarnain