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Mechanical Properties of Epoxy Composite Reinforced with Spent Coffee Ground and Coffee Husk
Etanto Heiliano Wijayanto
; Imran, Al Ichlas
; Siregar, Januar Parlaungan
; Mohd Ruzaimi Mat Rejab
; Tezara Cionita
; Wisnu Prayogo
; Deni Fajar Fitriyana
; Rozanna Dewi
; Thomas Junaedi
; Agustinus Purna Irawan
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 4
(2025)
This study aims to investigate the effect of increasing the concentration of natural filler on the mechanical properties of Spent Coffee Ground (SCG) / Coffee Husk (CH) reinforced epoxy matrix composite. The materials used in this study are epoxy resin as a matrix and waste coffee grounds and coffee husks as natural fillers with sizes of 100-mesh and concentrations of 10, 20, and 30 wt.%. The results showed that SCG 10 wt.% produced the best mechanical properties compared to the other samples ba...
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Analisis Metode Springate Dalam Memprediksi Kebangkrutan Pada Perusahaan Asuransi Yang Terdaftar di BEI
Purwantoro, Aletha Kevina Putri
; Nadia, Ananta Arta
; Anggraeni, Dwi
; Alamsyah, Naditha Ersa Auryn
; Ramadhan, Yanuar
KOMPAK : Jurnal Ilmiah Komputerisasi Akuntansi
Vol 18
, No 2
(2025)
Unstable financial conditions in insurance companies can serve as an early indicator of potential bankruptcy, which may have wide-ranging impacts on policyholders, shareholders, and the overall stability of the financial sector. Therefore, early detection of bankruptcy risk is critically important. This study aims to evaluate the effectiveness of the Springate model in identifying potential bankruptcy among insurance companies listed on the Indonesia Stock Exchange during the 2022–2024 period. T...
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Mechanical Performance of Epoxy Composite Reinforced with Wood Dust and Crumb Rubber Waste
Imran, Al Ichlas
; Siregar, Januar Parlaungan
; Cionita, Tezara
; Fitriyana, Deni Fajar
; Anis, Samsudin
; Dewi, Rozanna
; Junaedi, Thomas
; Wijayanto, Etanto Heiliano
; Prayogo, Wisnu
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 4
(2025)
The incorporation of wood dust and crumb rubber waste as filler in polymer matrix composite still requires in-depth evaluation of mechanical properties because they have different characteristics. This study evaluates the tensile, flexural, and hardness properties of epoxy composites reinforced with various fractions of wood dust and crumb rubber (5, 10, and 15%). The results showed that the composite with 5% crumb rubber produced the highest tensile strength of 15.52 MPa (CR5), while the highes...
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Fuzzy Logic-Based Clustering of Teacher Digital Pedagogy Using Cybergogy Framework for Sustainable Educational Innovation
Waryanto, Nur Hadi
; Retnawati, Heri
; Setyaningrum, Wahyu
; Insani, Nur
; Hery Murtianto, Yanuar
; Caturiyati, Caturiyati
; RR Rianto, Vivi
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 3
(2025)
Rapid changes in educational technology necessitate innovative approaches to sustainable teacher development. However, implementing learning technologies like Cybergogy faces significant challenges due to imbalances in digital pedagogy competencies and motivation among secondary school mathematics teachers. This study aims to cluster mathematics teachers' profiles based on the Cybergogy model's application using the Fuzzy C-Means (FCM) algorithm. The study involved 88 mathematics teachers from v...
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Enhancing Biology Students’ Mastery of Animal Anatomy with a Web-Based Electronic Atlas: Toward Sustainable Digital Learning Tools
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 3
(2025)
Learning animal anatomy in higher education often suffers from limitations in terms of visual media and practical time. Technology-based solutions such as web-based electronic atlases (e-atlases) can improve conceptual understanding and support digital continuous learning. This study aims to evaluate the effectiveness of web-based e-atlas in improving biology students' animal anatomy learning outcomes through a flipped classroom approach. This study used the ADDIE development model and a quasi-e...
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Computational Assessment of Orthopedic Implant Durability Using Finite Element Analysis
Haryanto, Ismoyo
; Bagastomo, Riondityo Soni
; Ismail, Rifky
; Siregar, Januar Parlaungan
; Cionita, Tezara
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 3
(2025)
Finite Element Analysis (FEA) provides a rapid and cost-effective method to evaluate orthopedic implants. This research investigates the mechanical performance and long-term durability of a seven-hole SS 316L Basic Fragment Set (BFS) reconstruction plate designed for pelvic fractures. Adhering to ASTM standards, material properties were defined via tensile testing (ASTM E8), while static and fatigue analyses were performed using a displacement control method in a four-point bending test setup in...
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Mechanical Performance of Alkali-Treated Rattan Strips with Epoxy Coating for Sustainable Composite Applications
Kalatharan, Sujentheran Nair
; Imran, Al Ichlas
; Irawan, Agustinus Purna
; Siregar, Januar Parlaungan
; Cionita, Tezara
; Fitriyana, Deni Fajar
; Anis, Samsudin
; Dewi, Rozanna
; Setyoadi, Yuris
; Wisnu Prayogo
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 3
(2025)
The use of natural materials like rattan in eco-friendly composites is gaining attention in materials engineering. However, its hydrophilic nature and interaction with other materials can affect mechanical strength. This study investigates how variations in rattan size and alkali treatment influence the tensile properties of single rattan strips through an epoxy dipping process. Rattan was prepared with varying lengths (5–15 cm), widths (3–8 mm), and a consistent thickness (0.5 mm). Alkali treat...
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1 Sitasi
Prediksi Status Pesanan Menggunakan Metode Classification C.45 Pada Toko Stuftech.Id di Shopee
Muhamad Arief Firdaus
; Fadli Rahman Latarissa
; Yanuar Dzaky
; Hidayanti Murtina
; Fadli Rahman Latarissa
; Yanuar Dzaky
; Hidayanti Murtina
Jurnal Elektronika dan Komputer
Vol 18
, No 1
(2025)
Peningkatan transaksi dalam platform e-commerce seperti Shopee menuntut adanya sistem prediksi status pesanan yang akurat, guna mengoptimalkan pelayanan dan mengurangi pembatalan maupun keterlambatan pengiriman. Penelitian ini bertujuan membangun model klasifikasi status pesanan (selesai atau batal) pada toko Stuftech.Id menggunakan algoritma C4.5. Data yang digunakan merupakan transaksi pesanan mencakup metode pembayaran, kategori wilayah pengiriman, dan ongkos kirim. Proses klasifikasi dilakuk...
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EFEKTIVITAS Efektivitas Program Literasi Di Perpustakaan Daerah Sidoarjo Dalam Meningkatkan Literasi Publik: Efektivitas Program Literasi Di Perpustakaan Daerah Sidoarjo Dalam Meningkatkan Literasi Publik
Sosio Dialektika : Jurnal Ilmu Sosial Humaniora
Vol 10
, No 1
(2025)
Penelitian ini bertujuan mendeskripsikan dan efektivitas program layanan Perpustakaan Daerah Sidoarjo dalam penyelenggaraan literasi masyarakat. Menggunakan metode deskriptif kualitatif dengan observasi, wawancara, dan dokumentasi. Analisis data menggunakan model Miles & Huberman. Hasil penelitian menunjukkan bahwa program-program tersebut efektif berdasarkan lima indikator Campbell (1989:121), yaitu: 1) Keberhasilan program, terlihat dari tercapainya target jumlah pengunjung dan terwujudnya...
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ANALISIS PENGARUH KUALITAS PRODUK, DESAIN PRODUK DAN CITRA MEREK TERHADAP KEPUTUSAN PEMBELIAN MOTOR MATIC HONDA VARIO MELALUI WORD OF MOUTH SEBAGAI VARIABEL INTERVENING DI DAERAH ISTIMEWA YOGYAKARTA
EBISNIS : JURNAL ILMIAH EKONOMI DAN BISNIS
Vol 18
, No 1
(2025)
This study aims to determine the effect of product quality, product design and brand image on purchasing decisions of Honda Vario Automatic Motorcycles through word of mouth as an intervening variable in the Special Region of Yogyakarta. The method used in this study is quantitative with Partial Least Square (PLS) analysis. Data were collected through questionnaires distributed to respondents who are consumers of Honda Vario Automatic Motorcycles in the Special Region of Yogyakarta. The sampling...
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