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Menampilkan 11–20 dari 87 artikel
A Enhancing Descriptive Writing through Semantic Mapping and STAD: A Quasi-Experimental Study in Indonesian EFL
Scripta : English Department Journal
Vol 12
, No 2
(2025)
Writing remains a foundational component of English language learning, particularly in academic contexts where students are expected to produce organized and coherent texts. Among various challenges faced by EFL learners, descriptive writing often proves difficult due to limited vocabulary, weak idea development, and a lack of structure. This study explores the use of Semantic Mapping in combination with Students Team Achievement Division (STAD) to improve students’ descriptive writing abilities...
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Effect of Biomass Feedstock Granulometry on Thermophysical Characteristics of Charcoal Briquettes via Screw Extrusion
Samsudin Anis
; Jefri Bale
; Septian Eko Cahyanto
; Ninda Kurniadi
; Fitriyana, Deni Fajar
; M. Thooriq Anwar
; Januar Parlaungan Siregar
; Natalino Fonseca Da Silva Guterres
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 4
(2025)
The present study investigates the impact of particle size variation (10, 18, 20, and 35 mesh) on the physical and thermal properties of charcoal briquettes from coconut shells manufactured with a screw-based extruder machine. The briquette manufacturing process involves crushing, mixing, molding, and drying. Assessments were conducted to ascertain friability, compressive strength, density, calorific value, volatile matter, ash content, fixed carbon, and water content. Comparable assessments wer...
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Effect of Natural Fiber Stacking Sequence on the Properties of Hybrid Composites for Drone Frame Applications
Janiviter Manalu
; Jefri Bale
; Khristhoper Aris Arianto Manalu
; Frans Augusthinus Asmuruf
; Fitriyana, Deni Fajar
; Nizar Alamsyah
; Januar Parlaungan Siregar
; Al Ichlas Imran
; Tezara Cionita
; Natalino Fonseca Da Silva Guterres
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 4
(2025)
The present study highlights the effective utilization of waste fibers in structural composites for drone frame applications, offering a sustainable pathway for developing high-performance materials while simultaneously addressing the issue of textile waste pollution. This study investigates the effect of ramie and cotton fiber waste fabric stacking sequences on the physical and mechanical properties of composites for quadcopter drone frames. Waste fabric was selected as an eco-friendly material...
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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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