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Menampilkan 641–650 dari 6208 artikel
Synthesis of Silica Gel From Rice Husk Ash for Sustainable Air Conditioning Requirements
Syahbardia
; Berkah Fajar Tamtomo Kiono
; Sonny Handojo Winoto
; Mohamad Said Kartono Tony Suryo
; Dedi Lazuardi
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 4
(2025)
An increase in air conditioning demand, driven by global warming and the need for comfort, highlights the importance of energy-efficient systems like desiccant cooling. This research explores using rice husk ash (RHA), an agricultural waste product from Indonesia, to synthesize silica gel for these systems. The study involved synthesizing silica gel from RHA through chemical processes and comparing its sorption capacity to commercial silica gel. Two synthesis methods were tested: a direct reacti...
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Boosting-Based Machine Learning Models and Hyperparameter Tuning for Predicting Vehicle Carbon Dioxide Emission
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 7
, No 4
(2025)
Sustainable development and climate change are central agendas in global policy and research. This study examines and compares three ensemble learning models using Gradient Boosting Machine, Categorical Boosting, and Extreme Gradient Boosting for forecasting vehicle carbon dioxide (CO2) emissions. Data preprocessing with Interquartile Range (IQR) and median imputation is among the methods used to address missing values in CO₂ rating and smog rating variables. SHAP and PDP were employed for featu...
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PENGARUH MENTAL DAN MODAL TERHADAP MINAT BERWIRAUSAHA PADA MAHASISWA EKONOMI PEMBANGUNAN UNIVERSITAS MUHAMMADIYAH SUMATERA UTARA
Jurnal Manajemen Sosial Ekonomi
Vol 5
, No 2
(2025)
This study aims to examine the influence of mentality and capital on the entrepreneurial interest of Development Economics students at Universitas Muhammadiyah Sumatera Utara. Multiple linear regression analysis and descriptive correlational approaches are employed in this quantitative approach. 39 students using a variety of sampling methodologies made up the sample. The study's findings show that, partially and concurrently, financial and mental resources significantly and favorably influence...
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IN SILICO ANALYSIS ON BINDING ACTION OF TERPENE NATURAL COMPOUNDS FROM APOCYNACEAE FAMILY AGAINST SHV-1 BETA-LACTAMASE FROM Klebsiella pneumoniae
Bioma : Jurnal Ilmiah Biologi
Vol 14
, No 2
(2025)
Antibiotic resistance is a growing threat to public health, particularly with hospital-acquired infections caused by Klebsiella pneumoniae. The limited treatment options for these infections are further complicated by the emergence of antibiotic-resistant strains due to the overuse of antibiotics. This study investigates the potential of Monoterpene Indole Alkaloids (MIAs) derived from six genera within the Apocynaceae family as inhibitors of the beta-lactamase enzyme (bla-SHV-1), which plays a...
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POTENTIAL IMPLEMENTATION OF ETHNOSCIENCE-ORIENTED LEARNING ON BIOTECHNOLOGY MATERIAL
Bioma : Jurnal Ilmiah Biologi
Vol 14
, No 2
(2025)
There are still many science learning practices that focus on memorization and do not relate the subject matter to real life or the local cultural context of students. Science is often perceived as a difficult and boring subject because it relies heavily on technical terms and abstract material. This study aims to explore the potential implementation of ethnoscience oriented learning in biotechnology material at the junior high school level. Data were collected through interviews wit...
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Studiefonds van Het Mangkoenagara VII :1924-1930
Keraton: Journal of History Education and Culture
Vol 7
, No 2
(2025)
This study examines the implementation of Studiefonds Van Het Mangkoenagoro VII (1924-1930) as a concrete manifestation of the Ethical Political Trilogy, especially in the field of education in Praja Mangkunegaran. This research aims to: (1) analyze the distribution mechanism and implementation of Studiefonds, (2) evaluate the role of Mangkunegara VII in the management of the education fund, and (3) identify the impact on the Sentana and Abdi Dalem. The method used the historical method with the...
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Membangun Loyalitas Karyawan di Era Transformasi: Peran Lingkungan Kerja, Motivasi, Work-Life Balance, serta Mediasi dan Moderasi Kepuasan Kerja
Jurnal Ilmiah Serat Acitya
Vol 14
, No 2
(2025)
Penelitian ini bertujuan untuk menganalisis pengaruh Lingkungan Kerja, Motivasi, dan Work-Life Balance terhadap Loyalitas Karyawan di Perusahaan EPC di Jakarta, dengan Kepuasan Kerja sebagai variabel mediasi dan moderasi. Penelitian ini menggunakan pendekatan kuantitatif dengan melibatkan total 259 responden yang dipilih melalui teknik purposive sampling. Data dikumpulkan menggunakan kuesioner terstruktur dan dianalisis dengan metode Partial Least Squares-Structural Equation Modeling (PLS-SEM)....
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The Effectiveness of Using YouTube as a Learning Media in Improving Early Childhood Literacy"
Schola Journal
Vol 3
, No 1
(2025)
This study aims to examine the effectiveness of using YouTube as a learning medium in improving early childhood literacy through the literature study method. Literacy is an important aspect of children's cognitive development that needs to be instilled early on. In the digital era, YouTube media is one of the interesting learning alternatives because it presents audio-visual content that can stimulate children's interest and understanding more optimally. This research was conducted by reviewing...
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Improving KPK and FPB Concepts Through Interactive TTS Media
Schola Journal
Vol 3
, No 1
(2025)
ABSTRACT
This study aims to improve the understanding of fifth grade students of Lobang 02 Elementary School regarding the concept of Least Common Multiple (LCM) and Greatest Common Factor (GCF) by using interactive media in the form of crossword puzzles (TTS). This study is included in the Classroom Action Research (CAR) type which is carried out in two cycles. The research subjects consisted of 16 students. Data collection tools used include learning outcome tests, observation sheets, and stud...
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Implementation of Video-Based Hypermedia Learning in Science Material for Grade III Elementary Schools
Schola Journal
Vol 3
, No 1
(2025)
This study aims to explain the implementation of the use of hypermedia media based on learning videos for Natural and Social Sciences (IPAS) material among third-grade students of SD Negeri Deles 01. The method used in this study is a descriptive qualitative approach with a total of 18 students and one teacher as subjects. Data were obtained through observation, interviews, and documentation activities, then analyzed using data reduction, data presentation, and conclusion drawing techniques. The...
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