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Loading-Dependent Physicochemical Characteristics of LiMn2O4 Composites with Plasma-Modified and Ammonia-Functionalized Rice Husk Carbon
Harianingsih, Harianingsih
; Deni Fajar Fitriyana
; Januar Parlaungan Siregar
; Agung Budiwirawan
; Ari Dwi Nur Indriawan
; Suryo Wiroyudho Wibowo
; Rizky Ilham Fadzillah
; Nabila Khoirunisa
This study investigates LiMn2O4 composites incorporated with nitrogen-functionalized rice husk-derived carbon as a sustainable secondary phase for cathode material development. Rice husk carbon was prepared through carbonization, acid-assisted activation, plasma treatment, and ammonia functionalization, then mechanically blended with LiMn2O4 at 2, 3, and 4 wt.% to obtain LMO-NC2, LMO-NC3, and LMO-NC4, respectively. FTIR analysis showed absorption bands at approximately 3390, 1625, 1400, 1008, 83...
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FTFPOS-IDF: A Fuzzy Rule-Based Thematic Term Weighting Scheme for Bloom's Taxonomy Question Classification
The increasing adoption of Artificial Intelligence (AI) in education has created a growing demand for automated and reliable assessment systems. Existing Bloom’s Taxonomy (BT) question classification approaches commonly rely on TF-IDF-based weighting schemes, which assign static term weights and often fail to capture the varying thematic importance of terms across cognitive levels. To address this limitation, this study proposes a novel Fuzzy Thematic Feature and Part-of-Speech Inverse Document...
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Effect of Printing Speed on the Properties of 3D Printed Products Using Recycled PET Filament
Fitriyana, Deni Fajar
; Agung Efriyo Hadi
; Nugroho Suhodo
; Aldias Bahatmaka
; Januar Parlaungan Siregar
; Tezara Cionita
; Zuhriyan Ash Shiddieqy Bahlawan
; Achmad Yanuar Maulana
Recycled PET has been widely studied for its potential use in 3D printing applications. However, few research has examined how printing speed affects recycled PET filament products' mechanical and physical qualities. This research examines how printing speed influences the physical and mechanical qualities of 3D-printed PET filament goods created from mineral water bottle trash. In this study, filament fabrication is carried out using the homemade pultrusion machine, then the filament is used fo...
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Effect of Different Layers on the Performance of Laminate Epoxy Composite Reinforced with Textile Waste
Thomas Junaedi
; Siregar, Januar Parlaungan
; Zalani, Mohamed Reza
; Imran, Al Ichlas
; Tezara Cionita
; Endah Murtiana Sari
; Deni Fajar Fitriyana
; Etanto Heiliano Wijayanto
Post-consumer textile waste poses significant environmental problems, but its potential for commercial recycling remains under-researched. Therefore, this study utilizes calico textile (CT) waste as reinforcement in polymer composites. The effect of layering number of CT in epoxy composite will be investigated. CT was varied with three layers, namely 1, 3, and 5 embedded in epoxy resin with the hand lay-up method in open molding. The mechanical testing of pure epoxy as a control point for tensil...
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Pengaruh Manajemen Organisasi Tim terhadap Kinerja Atlet dalam Lingkungan Olahraga Perguruan Tinggi
Jendela Olahraga
Vol 11
, No 01
(2026)
Penelitian ini bertujuan untuk mengkaji pengaruh manajemen organisasi tim terhadap kinerja atlet dalam konteks olahraga perguruan tinggi. Penelitian menggunakan pendekatan kuantitatif dengan desain survei. Sampel penelitian melibatkan 120 atlet mahasiswa yang berasal dari tiga perguruan tinggi negeri dan dipilih menggunakan teknik purposive sampling. Instrumen penelitian terdiri atas kuesioner manajemen organisasi tim yang mencakup aspek perencanaan, koordinasi, kepemimpinan pelatih, dan komunik...
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Exploring the Impact of AI Chatbots on Students’ Speaking Skills in EFL Learners: A Systematic Review
Rachmadani, Khulud Oktavia
; Musyafa`ah, Isna Ridhoatul
; Rachmadani, Asti Hijriatul Januanto
; Rachmadani, Ima Fitriyah
ETERNAL: English Teaching Journal
Vol 17
, No 1
(2026)
AI chatbot is one of the latest technologies in solving EFL students' problems with speaking anxiety and limited speaking practice. In this study, we conduct a Systematic Literature Review for the investigation of the effect of using AI chatbots on EFL students' speaking skills and learners' perceptions toward the use of AI chatbots in speaking skill improvement. We followed the SALSA framework, which includes Search, Appraisal, Synthesis, and Analysis to direct our work. We searched Lens.org an...
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Penerapan Metode Bermain Bowling Aritmatika Terhadap Kemampuan Kognitif Anak
Paudia
Vol 15
, No 1
(2026)
Kemampuan kognitif anak usia dini, khususnya dalam mengenal angka, menghitung, dan melakukan penjumlahan sederhana, masih belum berkembang optimal apabila pembelajaran didominasi metode konvensional dan kurang melibatkan aktivitas bermain yang bermakna. Oleh karena itu, penelitian ini bertujuan untuk mengetahui efektivitas penerapan metode bermain Bowling Aritmatika dalam mengembangkan kemampuan kognitif anak usia 5–6 tahun di TKIT Baitusshalihin Banda Aceh. Penelitian ini menggunakan pendekatan...
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Strengthening Village Governance through a Workshop on Politically-Informed Participatory Development Planning
Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia
Vol 4
, No 4
(2025)
Participatory village development planning is often treated as a technical-administrative routine. In practice, however, planning is inseparable from political dynamics that shape who participates, whose interests prevail, and how scarce resources are allocated. This community empowerment program (PKM) in Kedung Udi Village, Trawas District, Mojokerto Regency, East Java, aimed to strengthen village governance by enhancing the capacity of village officials and community representatives to design...
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Critique of The Philosophy of Science on The Effectiveness of Digital Transactions
JURNAL IQTISAD: Reconstruction of Justice and Welfare for Indonesia
Vol 12
, No 2
(2025)
Digital transactions utilize a digitized system, providing easy access for economic actors and making them an effective transactional method. This study aims to analyze the effectiveness of digital transactions through the lens of the philosophy of science. Digital transactions, as an innovation of conventional transactions, have provided accessibility and efficiency in economic activities. However, alongside their benefits, digital transactions also face challenges such as cybercrime, low digit...
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OPTIMALISASI PEMANFAATAN POJOK BACA KELAS III MELALUI BUKU KUNJUNGAN DAN QR & BARCODE SCANNER
Edukasi dan Didatika
Vol 3
, No 2
(2025)
ABSTRAK
Penguatan budaya literasi pada jenjang sekolah dasar memerlukan inovasi berkelanjutan yang mampu meningkatkan minat dan keterlibatan peserta didik dalam kegiatan membaca. Penelitian ini bertujuan untuk menganalisis efektivitas pemanfaatan buku kunjungan dan aplikasi QR & Barcode Scanner dalam mengoptimalkan penggunaan pojok baca siswa kelas III sekolah dasar. Penelitian menggunakan metode eksperimen dengan desain one group pretest–posttest. Subjek penelitian berjumlah 19 siswa kelas...
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