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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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LDWFOX Optimization for Hyperparameter Tuning of Inception CNN in UAV-Based Vegetation Density Mapping
Pramunendar, Ricardus Anggi
; Alomoush, Ashraf
; Prabowo, Dwi Puji
; Megantara, Rama Aria
; Alzami, Farrikh
; Winarsih, Nurul Anisa Sri
; Pergiwati, Dewi
; Shidik, Guruh Fajar
Vegetation density classification from UAV imagery is a practical necessity in fire-prone landscapes, since fuel load on the ground directly informs risk management decisions. Convolutional neural networks handle this classification reasonably well, but good performance requires careful hyperparameter tuning, and manual trial and error produces results that are unstable and hard to reproduce. This study proposes LDW-FOX, a modified FOX metaheuristic using a Linearly Decreasing Weight mechanism t...
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Inovasi Desalinasi Terpadu untuk Kemandirian Air Bersih dan Ketahanan Pangan di Desa Pesisir: KolaborasiPetani, BUMDes, dan Tempat Ibadah: Integrated Desalination Innovation for Clean Water Independence and Food Security in Coastal Villages: Collaboration Farmers, Village-Owned Enterprises, and Places of Worship
Irawansah, Opi
; Susanti, Susanti
; Ma’ruf, Anwar
; Nurwibowo, Fajar
; Hikmawati, Isna
; Sapundani, Rum
; Almahdi, Nuh
; Miftah, Rasyid
; Rizkya, Dayna
; Zaqia Alwi, Myra
; Putri Maulida, Nandita Vitarin
; Nurwibowo, Fajar
Ujung Alang Village, located in Kampung Laut Subdistrict, Cilacap Regency, is a coastal area facing critical challenges in freshwater availability due to seawater intrusion and limited access to clean water sources. This condition affects domestic needs, sanitation, and the productivity of local agriculture. The Kosabangsa 2025 Program was implemented as a strategic effort to enhance water self-sufficiency and food security through the application of solar-powered Reverse Osmosis (RO) desalinati...
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IMPLIKASI PENGHINDARAN PAJAK, PERENCANAAN PAJAK, LEVERAGE, DAN UKURAN PERUSAHAAN TERHADAP NILAI PERUSAHAAN ENERGI 2020‑2024
Jurnal Akuntansi, Keuangan dan Auditing
Vol 6
, No 2
(2026)
ABSTRACT
Companies registered on the Indonesia Stock Exchange in the energy industry from 2020 to 2024 will have their company value analysed for tax avoidance, tax planning, leverage, and firm size. There were 119 observations that fulfilled the sample requirements in this quantitative investigation that used a purposive sampling strategy. Using IBM SPSS Statistics 25, we ran numerous linear regressions on the data. A negative and statistically significant effect of tax avoidance on firm value...
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Performance Optimization of a Petrochemical Cooling Tower via Fill Replacement: Cleanflow vs Cleanflow Plus
This study investigates the performance improvement of an induced draft, counterflow cooling tower after replacing the existing Cleanflow fill with Cleanflow Plus. One cell (E) was upgraded while four cells (A–D) served as the baseline under CTI ATC-105 procedures. Measurements included outlet temperature, wet-bulb temperature, circulation flow, and fan power. Results show that Cell E achieved a higher cooling range (9.20°C vs. 8.63°C average) and a lower approach (6.29°C vs. 6.87°C average). He...
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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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Pengelolaan Sampah Tingkat Rumah Tangga Melalui Bank Sampah
Dhaningtyas, Shalihat Afifah
; Kristini, Tri Dewi
; Nursetia, Cantika Dwi
; Astiah, Delfika Dwi
; Anggara, Muhammad Surya
; Wibowo, Aditia Fajar Putra
Jurnal Inovasi dan Pengabdian Masyarakat Indonesia
Vol 5
, No 2
(2026)
Latar belakang: Peningkatan jumlah penduduk dan bangunan mengakibatkan peningkatan jumlah konsumsi barang yang dapat menghasilkan sampah TPS (Tempat Pembuangan Sementara). Sampah di sekitar permukiman penduduk sudah tidak mampu lagi menampung volume sampah yang terus meningkat. Tujuan: mengetahui peningkatan pengetahuan warga tentang pengelolaan sampah tingkat rumah tangga. Metode: metode yang digunakan yaitu observasi dengan ceramah, praktik langsung, dan mengerjakan soal pre-test dan post-test...
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Pendampingan Aktivitas Fisik bagi Anak Usia Dini untuk Mencegah Sedenteri
Dhuha, Ahad Agafian
; Yogaswara, Andre
; Muhibbi, Muhammad
; Widodo, Agung
; Abubakar, Sayid Fariz Bin Seh
; Firdaus, Mohammad Fajar
Jurnal Inovasi dan Pengabdian Masyarakat Indonesia
Vol 5
, No 2
(2026)
Latar belakang: Tingginya durasi screen time dan rendahnya aktivitas fisik anak usia dini mengakibatkan berbagai penyakit dan gangguan perkembangan motorik pada anak. Kurangnya aktivitas fisik berpengaruh terhadap keterlambatan gerak seperti berjalan dan keterlambatan bicara. Pemberian handphone dalam jangka waktu lama dan kurangnya stimulus oleh keluarga merupakan salah satu penyebab utama terjadinya berbagai gangguan kesehatan dan perkembangan pada anak. Kurangnya aktivitas fisik, tingginya a...
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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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Attention-Augmented GRU for Stock Forecasting: A Trade-Off Between Directional Accuracy and Price Prediction Error
R. Daniel Hartanto
; Guruh Fajar Shidik
; Farrikh Alzami
; Ahmad Zainul Fanani
; Aris Marjuni
; Abdul Syukur
Journal of Computing Theories and Applications
Vol 3
, No 4
(2026)
Attention mechanisms have been widely incorporated into recurrent neural network architectures for financial time series forecasting, with most prior work reporting improvements in price-level error metrics. This study revisits that claim through a controlled empirical comparison of four deep learning architectures on nearly two decades of Telkom Indonesia (TLKM) closing price data from the Indonesia Stock Exchange (IDX). The models evaluated are a three-layer Gated Recurrent Unit (GRU) baseline...
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