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445 referensi ditemukan

REPOSITORY Umumindonesia2009

SINTESIS ESTER DERIVATIF ASAM HUMAT DAN APLIKASINYA SEBAGAI IONOFOR PADA ELEKTRODA SELEKTIF ION Fe3+ BERBASIS MEMBRAN CAIR

Dhony, Hermanto; Dwi, Siswanta; Muhali, - · Universitas Negeri Yogyakarta

Sintesis ester derivatif asam humat dan aplikasinya sebagai ionofor pada elektroda selektif ion Fe3+ berbasis membran cair telah dikembangkan. Sintesis ester derivatif asam humat dilakukan dengan mengoptimasi variasi komposisi dan mengevaluasi kondisi optimum eksperimen. Ester derivatif asam humat diimobilisasikan ke dalam polimer membran dengan teknik e…

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REPOSITORY Umumindonesia2006

MASA DEPAN CIVIL SOCIETY DI INDONESIA: PROSPEK DAN TANTANGAN

Hasan, Halili · Universitas Negeri Yogyakarta

This paper aims to discuss on civil society, its prospects and challenges. It is urgent because civil society is a determining factor of Indonesia democratization. Civil society is a society within state which containing social association which has ability to fill public spaces between state and citizen, and interact independently with state, whether indivi…

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REPOSITORY Umumindonesia

A Study on the Effectiveness of k-NN Algorithm for Career Guidance in Education

Alex Wenda, - · UIN Sultan Syarif Kasim Riau

This study aims to evaluate the performance of k-NN algorithm in recommending career paths for students based on their interests, past courses, and career goals. The k-NN algorithm was applied to a dataset of student information and its performance was evaluated using quantitative or qualitative measures such as accuracy or user satisfaction. The results ind…

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REPOSITORY Umumindonesia

SINTESIS AMIDA DERIVATIF DARI ASAM HUMAT DAN APLIKASINYA SEBAGAI IONOFOR PADA ELEKTRODA SELEKTIF ION Ni2+ BERBASIS MEMBRAN CAIR

Muhali, -; Dwi, Siswanta · Universitas Negeri Yogyakarta

Sintesis amida derivatif dari asam humat dan aplikasinya sebagai ionofor pada elektroda selektif ion Ni2+ berbasis membran cair, telah dikembangkan. Amida derivatif dari asam humat disintesis melalui jalur esterifikasi asam humat dengan optimasi variasi komposisi reagent maupun katalis dan mengevaluasi kondisi optimum eksperimen. Sintesis secara kimia po…

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EBOOK Umum2026

La transizione energetica come questione sociale

Giada F.P., Coleandro

Energy plays a central role in the relationship between society, nature and technology, but these interconnections are often not readily apparent. This situation stems from the structure of energy systems, which are based on large production centres located far from the points of consumption and on centralised forms of supply and control. The ecological and …

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EBOOK Umum2026

Marine Ecosystems

Anonim

Marine ecosystems, a very wide topic, includes many different processes, groups of organisms and geographical peculiarities. The objective of this book is to present various topics of great importance for understanding the marine ecosystems, what they are, how they work and how we can model them in order to forecast their behaviour under changing conditions.…

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JOURNAL Umuminternational2026

Machine learning-based detection of underreported occupational injuries and diseases for sustainable occupational health surveillance in Indonesia

Mochammad Andika Putra; Khoirul Muslim; Hardianto Iridiastadi; Dwita Astari Pujiartati; Wyke Kusmasari; Tarimantan S Saragih; An Nisa Pramasanti; Fergie S Mahaganti; Fadly Eka Pradana; Rendra H Hutabarat; Denny Siregar · DOAJ Open Access Articles

Occupational injury and disease surveillance plays an important role in supporting prevention-oriented occupational safety and health (OSH) governance. However, under-reporting of occupational injuries and diseases remains a persistent challenge, particularly in emerging economies where surveillance systems are often fragmented and administratively oriented.…

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JOURNAL Umuminternational2026

Prediction model of preeclampsia using single nucleotide polymorphism and machine learning methods: A population-based cohort study in Jordan

Shatha Awawdeh; Hasan Rawashdeh; Hanaa Fathi; Arar Al Tawil; Fatima Al-Shannaq; Esraa Henawi; Omar F. Khabour · DOAJ Open Access Articles

Preeclampsia is the most common medical disorder in pregnancy that is steadily increasing over time. Evidence indicates that early identification of women at high risk, followed by timely preventive interventions such as Aspirin and close surveillance, can significantly reduce disease incidence and severity, highlighting the importance of accurate early pred…

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JOURNAL Umuminternational2026

A hybrid structural–machine learning framework: Conventional SVAR and random forest regression

Augusto Aliaga-Miranda; Luis Ricardo Flores-Vilcapoma; Jorge Miguel Chávez-Díaz; Luis Antonio Visurraga-Camargo; Jacqueline Denisse Llacza-Molina; Wilmar Salvador Chavarry-Becerra · DOAJ Open Access Articles

This study examines the transmission of copper price shocks to the Peruvian economy through a hybrid empirical framework that combines a conventional Structural Vector Autoregression model with Random Forest regression. Using quarterly and monthly macroeconomic data for 2004–2025, the analysis evaluates how copper shocks propagate through the exchange rate, …

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JOURNAL PAIinternational2026

AI and data-driven supply chain integration: The role of network capabilities in sustainability reporting readiness

Abeer Tarawneh; Amro Alzghoul; Ahmad Ali · DOAJ Open Access Articles

The world supply chains are rapidly going digital and at the same time, there are growing demands of sustainability transparency and responsibility. The existing literature has mostly focused on the performance advantages of digital technologies, although it has paid relatively little attention to the fact that the latter help prepare sustainability reportin…

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JOURNAL PGMIinternational2026

Development Policy and Public Infrastructure Development in Côte d’Ivoire (1920-1939): Investments, Taxation, and Territorial Inequalities

Nohan Sidibe; Mamadou Yeo · DOAJ Open Access Articles

This study examines how French colonial policy reforms implemented between 1920 and 1939 influenced the development of public infrastructure and institutions in Côte d’Ivoire by assessing their scope, limitations, and territorial impact. The methodology is based on a cross-analysis of archival sources (administrative reports, decrees, and telegrams), quantit…

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JOURNAL PAIinternational2026

Single-Cell RNA Sequencing Reveals the Heterogeneity and Microenvironment of Temporal Bone Squamous Cell Carcinoma

Wen Lu; Binhong Liao; Zhuangzhuang Li; Yini Li; Jie Li; Linfei Mao; Tianjiao Zhou; Haibo Shi; Dongzhen Yu; Chuan Xu; Zhengnong Chen · DOAJ Open Access Articles

Objectives. Temporal bone squamous cell carcinoma (TBSCC) is the most common subtype of temporal bone malignancy. However, its low incidence, high misdiagnosis rate, and the difficulty of conducting large-scale studies and clinical trials have limited researchers’ understanding of its occurrence and progression, and diagnostic and therapeutic biomarkers rema…

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JOURNAL Umuminternational2026

The power of practicum in science education: An analysis of the role of practical-based learning on learning satisfaction and deep learning

Ismail Ismail; Asham Bin Jamaluddin; Arifah Novia Arifin; Andi Citra Pratiwi · DOAJ Open Access Articles

Despite growing demands for deeper scientific understanding and practical competence, empirical evidence on how microlearning and teaching style interact with practical-based learning to strengthen learning quality across ASEAN school contexts remains limited. This study analyzes the effects of microlearning, teacher teaching style, and practical-based learn…

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JOURNAL Umuminternational2026

ChatGPT as a Motivational Tool in ELT: A Comparative Analysis of Teacher and Student Perceptions

Arezoo Ashoori Tootkaboni; Mojtaba Maghsoudi · DOAJ Open Access Articles

The integration of Artificial Intelligence (AI) in education is reshaping pedagogical approaches, offering new avenues for personalized learning. This study investigates the motivational role of ChatGPT in English Language Teaching (ELT) by comparing perceptions of 33 instructors and 215 secondary school students in Iran. A quantitative, descriptive-comparat…

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JOURNAL Umuminternational2026

The Impact of Educational Interactive Tools on Perceived Stressors Related to Social Network Sites Among English as a Foreign Language Learners in Small Private Online Courses

Rezvan Ghasemzadeh Saeed Khanloo; Farzaneh Khodabandeh; Masoud Saeedi; Ruhollah Sharifi · DOAJ Open Access Articles

The integration of interactive educational tools, like VoiceThread (VT), into new educational settings, like small private online courses (SPOCs), while offering substantial benefits, can introduce less explored drawbacks, including stressors associated with social network sites (SNSs). This study addresses this gap by investigating the implementation of VT …

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JOURNAL Umuminternational2026

Integrating ICT and AI-driven Reflective Practice to Enhance EFL Teachers’ Language Assessment Literacy: A Comparative Study of Young and Adult-Learner Contexts

Mohammad Hossein Arefian; Rajab Esfandiari; Abbas Ali Zarei Mavini · DOAJ Open Access Articles

Language Assessment Literacy (LAL) is vital for effective instruction, but its development is often limited by institutional policies and a lack of contextualized professional development. Although information and communication technology (ICT) and Artificial Intelligence (AI) provide new avenues for nurturing reflective practice and fostering LAL, their inf…

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JOURNAL Umuminternational2026

Classroom Management as Situated Relational Practice: EFL High School Teachers’ Cognitions and Experiences

Ebrahim Ebrahimi; Nahid Zarei; Davud Kuhi · DOAJ Open Access Articles

Classroom management remains a central yet conceptually multifaceted dimension of effective teaching, particularly in high school EFL contexts characterized by linguistic, behavioral, and institutional complexity. While prior research has extensively examined classroom management strategies, comparatively limited attention has been given to how teachers them…

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JOURNAL Umuminternational2026

The Impact of Technology and Artificial Intelligence on Self-Training and Professional Development of Iranian Undergraduate TEFL Students

Sara Sheikhzadeh; Bahram Mowlaie · DOAJ Open Access Articles

This study investigates the role of Artificial Intelligence (AI) and digital technologies in supporting self-training and professional development among undergraduate TEFL students at a single branch of Islamic Azad University (South Tehran). Employing an explanatory sequential mixed-methods design, the study first analyzed quantitative survey data and subse…

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JOURNAL Umuminternational2026

BitMine’s Ethereum Strategy and MicroStrategy’s Bitcoin Approach: A Comparative Analysis

Ibrahim M.I. KHARIS; Adrian NEGREA; Adriana GIURGIU · DOAJ Open Access Articles

The integration of digital assets into corporate treasury strategies has accelerated in 2025, driven by heightened macroeconomic uncertainty and growing institutional acceptance of blockchain-based financial instruments. This study provides a comparative assessment of BitMine Immersion Technologies Inc. (BMNR) and MicroStrategy Incorporated (MSTR), two firms…

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JOURNAL Umuminternational2026

Empirical Analysis of the Efficiency of Working Capital Management among Hungarian Food Industry SMEs

Peter BAGDACS · DOAJ Open Access Articles

The Hungarian food industry is one of the strategically important sectors of the national economy, playing a vital role in maintaining food security, supporting employment, and contributing to overall economic performance and value creation. In recent years, firms operating in this sector have faced an increasingly complex and uncertain economic environment …

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