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Banana Peel-Derived Activated Carbon/MnO₂ Composites for Supercapacitor Electrode Applications
Herwanti, Katarina
; Saptono Nugrohadi
; Muhammad Taufiq Anwar
; Stanislaus Christo Petra Nugraha
; Dail Umamil Asri
; Noening Andrijati
Banana peel waste is an abundant agricultural by-product with high carbon content but remains largely underutilized. This study presents a preliminary investigation into the conversion of banana peel waste into activated carbon and its integration with manganese dioxide (MnO₂) to produce biomass-derived composite electrodes for supercapacitor applications. Activated carbon was prepared by carbonization followed by chemical activation using 30 wt% H₃PO₄, while MnO₂–carbon composites were synthesi...
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Enhanced Self-Esteem Classification: Leveraging Data Augmentation and Transformer-Based Sentence Embeddings
Ahmadiansah, Reza
; Mukti Ali
; Rasimin
; Achmad Maimun
; Kastolani
; Imam Subqi
; Embun Bening Di Moravia
; Semma, Andi Bahtiar
This study investigates automated self-esteem assessment from self-descriptive text using transformer-based sentence embeddings. Although prior research has explored text, behavioral, and multimodal signals, the combined effects of data augmentation, embedding choice, and classifier complexity in text-only self-esteem classification remain insufficiently understood.Accordingly, this study aims to systematically evaluate embedding–classifier combinations under both low-resource and augmented data...
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Sustainable Cement Paste Incorporating Andesite Waste Powder: Mechanical Performance and Feasibility for Ornamental Elements
Utilising industrial waste as a partial solution for Portland cement has become more common as the need for environmentally friendly building materials grows. The potential of using andesite waste powder (AWP), a byproduct of the stone-processing industry, as a cementitious material for ornamental cement-based products is examined in this study. The flowability, dry unit weight, and compression strength tests were done on cement paste samples with 0%, 50%, and 75% AWP replacement levels at water...
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Lightweight Dual-Layer Chaotic Image Encryption Using Arnold Cat Map and Henon Zigzag Diffusion
Umam, Chaerul
; Abdussalam, Abdussalam
; Nursetyo, Arif
; Sugiarto, Bambang
; Islam, Husain Md Mehedul
Digital image transmission over open networks raises significant security concerns due to the high correlation and predictable statistical properties of image data. Existing chaotic encryption schemes based on Arnold Cat Map (ACM) and Henon mapping often suffer from high computational cost, parameter sensitivity, or reliance on complex multi-stage designs. To address these limitations, this study proposes a lightweight dual-layer chaotic image encryption framework that integrates ACM-based pixel...
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Microwave-Assisted Self-Healing of AC-WC Modified with Iron Powder: Mechanical Performance and Healing Rate
Amalia Firdaus Mawardi
; Machsus Machsus
; Dadang Supriyatno
; Achmad Faiz Hadi Prajitno
; Muhammad Fikri Nadhif
; Hazen Masrafat
Conventional asphalt mixtures have limited microwave absorption, reducing the effectiveness of microwave-assisted self-healing. This study evaluates the effect of iron powder (0–10% by mass of fine aggregate) as additional fine aggregate in AC-WC mixtures on mechanical performance and microwave-activated healing behavior. Cylindrical specimens (63 mm × 100 mm; three per mixture) were tested using Marshall Stability and Indirect Tensile Strength (ITS) at 25 °C. Healing efficiency was determined b...
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A Sustainable Computational Framework for Breast Cancer Screening: Optimizing High-Dimensional Feature Spaces via MVP-PCA for Resource-Constrained Environments
The rapid integration of Electronic Health Records (EHR) demands the efficient processing of high-resolution medical images. However, deep learning architectures applied to mammography classification often produce massive, high-dimensional feature spaces susceptible to the curse of dimensionality and anatomical noise. Furthermore, conventional dimensionality reduction approaches tend to cause over-reduction, which destroys crucial microcalcification textures. To address these challenges, this st...
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IMPLEMENTASI DAN PELATIHAN SISTEM PENDAFTARAN ONLINE KARTU TANDA ANGGOTA MUHAMMADIYAH RANTING KEBAKKRAMAT
Abdi Teknoyasa
(2026)
Muhammadiyah merupakan salah satu organisasi islam terbesar yang ada di Indonesia. Organisasi ini memiliki banyak cabang dan ranting disetiap kota dan kecamatan di seluruh Indonesia. Kecamatan Kebakkramat yang terletak di kabupaten Karanganyar, Jawa Tengah memiliki pimpinan cabang Muhammadiyah (PCM) dan pimpinan ranting muhammadiyah (PRM) yang aktif melakukan berbagai kegiatan kemuhammadiyahan. Anggota Muhammadiyah di wilayah tersebut tersebar diberbagai PRM dengan total anggota hampir seribu or...
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SOSIALISASI DAN PELATIHAN SISTEM INFORMASI POTENSI PARIWISATA LOMOTIK DI DESA MODELOMO
Abdi Teknoyasa
(2026)
Perkembangan teknologi digital telah mendorong transformasi tata kelola desa, termasuk pengelolaan dan promosi potensi pariwisata. Desa Modelomo memiliki beberapa potensi pariwisata yang belum didokumentasikan dengan baik dan dipublikasikan secara optimal, sehingga diperlukan media digital untuk mendukung penyebaran informasi desa. Kegiatan pengabdian masyarakat ini bertujuan untuk mengembangkan dan mengimplementasikan Situs Web Potensi Pariwisata “Lomotik” sebagai media informasi desa dan promo...
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Stability of a Floating Fiber Levee Model on Coastal Areas in Response to Climate Change
This study aimed to analyze the stability and performance of a floating fiber levee model in response to hydrostatic pressure, shear forces, and overturning moments under three different water level scenarios. The methodology involved experimental testing in a laboratory using a floating fiber levee model placed in a water-filled test tank, as well as numerical simulations conducted with ANSYS software to analyze the structural behavior of the levee. The results showed that although there were m...
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Faktor-Faktor yang Berhubungan dengan Meningkatnya Kejadian Kanker Serviks pada Wanita Usia Subur di RSUD Dr.. (H.C.) Ir.. Soekarno Tahun 2025
Vol 17
, No 02
(2026)
Kanker serviks sering menyerang sistem reproduksi wanita, terutama pada kelompok wanita usia subur (WUS). Penyebab utama kanker serviks adalah infeksi Human iPapilloma iVirus (HPV). Kanker serviks dapat berdampak luas terhadap kesehatan wanita secara keseluruhan. Penelitian ini bertujuan untuk mengetahui faktor-faktor iyang iberhubungan idengan meningkatnya ikejadian ikanker iserviks ipada wanita iusia isubur. Penelitian ini menggunakan metode kuantitatif dengan pendekatan case control. Populasi...
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