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Jurnal Ilmiah Ilmu Terapan Universitas Jambi
Published by Universitas Jambi
ISSN : 25802240     EISSN : 25802259     DOI : https://doi.org/10.22437/jiituj.v6i2
Core Subject : Education, Engineering,
Education Engineering Industrial & Manufacturing Engineering
JIITUJ publish the result of research on applied science and education (Research of applied science and education) such as: the research result on applied science and education such as curriculum development and learning, character education, technology and instructional innovation, and learning evaluation. the research result on applied science and technology such as the development of applied technology and applied arts, appropriate technology, designing information systems, the research result on applied science and economic development the research result on applied science and public health. JIITUJ is a double-blind peer-reviewed journal, published three (3) times a year by Research Institutions and Community Service (LPPM), Universitas Jambi, Indonesia. JIITUJ is open to academic circles and university researchers, research institutes, librarians, graduate and postgraduate students to share information on research results.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 340 Documents
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TRANSFORMATION OF MATHEMATICAL KNOWLEDGE FOR TEACHING NON-EUCLIDEAN GEOMETRY CONCEPT THROUGH E-LEARNING BASED ON THE THEORY OF DIDACTIC SITUATIONS USING A MULTIPHASE MIXED METHOD Noviyanti, Mery; Sudirman, Sudirman; Rodríguez-Nieto, Camilo Andrés
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 2 (2025): Volume 9, Nomor 2, June 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i2.42976

Abstract

The understanding of non-Euclidean geometry is essential for mathematics teachers as it can broaden the spatial perspective and enhance logical and abstract thinking. However, many teachers face challenges in teaching this concept because it conflicts with the long-established intuitive understanding of Euclidean geometry. An innovative technology-based method is then required to make non-Euclidean geometry learning more effective. Therefore, this research aimed to explore how mathematical knowledge related to non-Euclidean geometry could be transformed and enhanced through e-learning based on the Theory of Didactic Situations (TDS). A multiphase mixed method (MMM) was used to achieve this objective. Approximately 20 mathematics teachers, including 6 males and 14 females, were selected as the participants. Data were collected using content development guidelines, observation sheets, interviews, and tests, as well as analyzed qualitatively and quantitatively. The results showed that e-learning based on TDS effectively improved teachers' understanding of non-Euclidean geometry. In addition, this method enhanced teachers' engagement and encouraged independent exploration during the learning process. There were still challenges in understanding hyperbolic, spherical, and elliptic geometry due to a limited understanding of non-Euclidean axiomatic systems. Conceptual and procedural errors were commonly traced back to the limitations of visualizing non-Euclidean spaces. To address such issues, a more interactive method, combining visual simulation and problem-based learning, was recommended to improve non-Euclidean geometry literacy among teachers and students.
ISOLATION OF Micractinium Pusillum FRESENIUS FROM FISH PONDS USING SDE TECHNIQUES: SEDIMENTATION, DILUTION, AND ENRICHMENT Chaidir Adam; Agus Haryono; Titin Purnaningsih; Elga Araina; Sugeng Mashabhi; Yessy Velina; Awalul Fatiqin
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 2 (2025): Volume 9, Nomor 2, June 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i2.32929

Abstract

Green water in fish ponds, caused by algal blooms, harbors a diverse array of microalgae species and is commonly observed in aquaculture settings. This resource-rich water source holds promise for research focused on microalgae cultivation at a laboratory scale, serving as a valuable starter sample for such investigations. Preliminary observations suggested that the predominant species in such green water habitat belonged to the genus Micractinium Fresenius 1858. An effective isolation technique of this microalgae species is necessary, not only to reduce the contamination of the rotifers but also to purify the starter cultures. Although automated microalgae isolation techniques have been developed recently, such as using Flow Cytometry via Cell Sorting, traditional isolation techniques are still relevant. One of the traditional microalgae isolation techniques that has been widely used for many years is the dilution technique. This study aims to isolate Micractinium pusillum Fresenius from fish ponds using the modified dilution technique: SDE (sedimentation, dilution, and enrichment). The dilution results showed that rotifer contamination was reduced at a dilution of 10─3 and the density of microalgae was also reduced. At this dilution level, only one type of microalgae was observed, i.e., Micractinium pusillum Fresenius. which was then cultured for enrichment using a simple photobioreactor. This 10-3 culture was observed to grow well during the enrichment stage for 10 days. These results indicate that the SDE isolation technique can be effectively used to isolate microalgae from green water, especially for Micractinium pusillum which is the most abundant microalgae species in green water in this study.
PROSPECTIVE MATHEMATICS TEACHERS’ MATHEMATIZATION COMPETENCIES IN SOLVING WORD PROBLEMS Dewi Hamidah; Susiswo Susiswo; Hery Susanto; Sharifah Osman
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 3 (2025): Volume 9, Nomor 3, September 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i3.33211

Abstract

Mathematization competencies among prospective teachers, focusing on their ability to construct and communicate mathematical arguments, are crucial for effective mathematics education. This exploratory study aimed to produce qualitative-descriptive data on prospective teachers' competencies of mathematization in teacher education programs. The study employs word problems based on everyday-life problems that are solved by the mathematization process and assessed based on three indicators of mathematization competencies. The data were collected from three groups of prospective teachers in the first, third, and fifth semesters, respectively, in the mathematics education study program at a public University in Kediri, Indonesia. The findings revealed that while all prospective teachers demonstrated basic skills in identifying assumptions and organizing problems, fifth-year students exhibited better abilities in mathematical argumentation, particularly in generalizing mathematical problems. These advanced abilities included the formulation, analysis, and presentation of proficient mathematical arguments, indicating a deeper understanding and mastery of mathematization that developed progressively throughout their education. The results of this study underscore the importance of sustained and structured learning experiences in mathematics teacher education programs to foster higher-order mathematical competencies. This study enriches the mathematics education literature by illustrating the growth of argumentation skills in mathematization among prospective teachers, highlighting the need for educational curricula that emphasize these advanced skills.
CAPTURING RANDOM-EFFECT META-ANALYSIS TOWARD SCIENTIFIC INQUIRY LEARNING APPROACH IN SCIENCE EDUCATION Mobinta Kusuma; Insih Wilujeng; Purwo Susongko; Heri Retnawati; Purwoko Haryadi Santoso; Chokchai Yuenyong; Ariyatun Ariyatun
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 3 (2025): Volume 9, Nomor 3, September 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i3.35600

Abstract

Implementing scientific inquiry as a learning approach has accounted for most discussion topics and research areas in science education. Numerous studies have been conducted for decades; therefore, synthesizing the updated results will be worthwhile. Diverse needs require effective implementation of the vision of scientific inquiry for scientists, and various forms of learning output pose a challenge for scholars to provide a systematic summary of evidence regarding its role in science teaching and learning. Therefore, the random effect model was suitable for this paper to capture the impact of scientific inquiry on science learning comprehensively. A meta-analysis study using a random-effects model was chosen to systematically synthesize 22 academic articles gathered from the Scopus and Web of Science indexing databases. An individual paper was first extracted for its sample size, mean, and corresponding standard deviation, which were then calculated to measure the effect size of each piece of evidence using the JASP program. In summary, we highlight the positive and moderate impact of scientific investigation on student learning outcomes as a promising approach to enhancing science learning. This study fills the gap in the previous literature by providing a cross-cultural systematic synthesis of Indonesian and non-Indonesian literature, as well as comprehensively measuring the effects of scientific inquiry interventions. These findings support scientific inquiry as a promising approach to learning and encourage the sustainability of efforts to enhance the quality of science learning in various educational contexts.
FINANCIAL PERFORMANCE, ENVIRONMENTAL DISCLOSURE, AND FIRM VALUE: THE MODERATING ROLE OF ECONOMIC GROWTH IN ENERGY SECTOR COMPANIES IN INDONESIA Dedi Kusmayadi; Irman Firmansyah; Wildan Dwi Dermawan
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 2 (2025): Volume 9, Nomor 2, June 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i2.35741

Abstract

This research aims to explore the financial performance of energy companies and environmental disclosure practices in increasing company value. In addition, to date, there has been no research that investigates the role of economic growth in the relationship between environmental disclosure and corporate performance on corporate value in energy companies, even though economic growth greatly influences business conditions. This is the urgency of this research. Therefore, this research fills the gap by including gross domestic product as an indicator of economic growth as a moderating variable. The method used is moderated regression analysis with the research sample, namely energy companies in Indonesia that made environmental disclosures from 2017 to 2022. The results found that financial performance (profitability, liquidity, activity and solvability) significantly influenced company value, but environmental disclosure was not successful. shows influence. In addition, the moderation analysis test found that GDP moderated the relationship between environmental disclosure and company value, but did not moderate the relationship between financial performance and company value. This model implies that there is a role for the macroeconomic situation that triggers management to disclose its environmental activities in supporting increasing company value in the energy sector.
PROPORTIONAL REASONING: INSIGHTS FROM STUDENTS’ EARLY ATTEMPTS AT QUANTIFYING IN SOLVING MATHEMATICAL LITERACY PROBLEMS Nego Linuhung; Purwanto Purwanto; Sukoriyanto Sukoriyanto; Sudirman Sudirman; Mohd Isha Awang
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 2 (2025): Volume 9, Nomor 2, June 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i2.35828

Abstract

This research aims to explore students’ proportional reasoning at the early attempts at quantifying stage when students face proportional situations, especially mathematical literacy problems. This research uses a qualitative research approach involving grade 9 junior high school. Data was collected by providing mathematical literacy problems containing proportional situations and in-depth interviews with research subjects. The research results show that students in the early attempts at quantifying stage begin to identify important variables, recognize regularities, and develop plans to solve problems. Students apply inappropriate addition relationships in proportional situations, add or subtract numbers without understanding the concept of comparison, and have a sense of comparing sizes that are bigger and smaller, but students have limitations in understanding the concept of proportionality, especially in recognizing when comparison should be used, students try to identify comparative patterns, students have difficulty connecting patterns to multiplicative forms; able to conclude, but the conclusions are wrong due to limitations in understanding the concept of proportionality which results in inaccurate results. This study provides a novel contribution by specifically focusing on the “early attempts at quantifying” stage, a crucial yet underexamined phase in proportional reasoning development. The findings fill a gap in understanding how students transition from additive to multiplicative reasoning when faced with real-world mathematical problems. The implication is that assistance is needed in the form of exercises that increase students' understanding and sensitivity to multiplicative situations and relationships between variables in solving mathematical literacy problems.
COMMUNITY PARTICIPATION AND SOCIAL RECONSTRUCTION POST NATURAL DISASTERS BASED ON LOCAL WISDOM IN SIGI DISTRICT CENTRAL SULAWESI PROVINCE Hasan Muhamad; Dewi Cahyawati Abdulah; Nora Ariani; Afdal Afdal
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 2 (2025): Volume 9, Nomor 2, June 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i2.37009

Abstract

This study investigates two key objectives: (1) the role of community participation and social reconstruction following the earthquake and liquefaction disaster in Sigi Regency and (2) the strategic utilization of local wisdom as a foundational element for long-term recovery and resilience. Employing a qualitative research design, the study collected both primary and secondary data through observations, in-depth interviews, Focus Group Discussions (FGDs), and documentation, supported by the Participatory Rural Appraisal (PRA) approach to ensure community engagement and contextual depth. Findings reveal that post-disaster community participation was notably high, with active involvement in reconstruction efforts, leading to widespread support for rehabilitation programs initiated by both governmental and traditional institutions. Furthermore, the revival and application of the molibu tradition, a local wisdom-based reconciliation and decision-making practice, emerged as a powerful cultural mechanism that significantly enhanced social reconstruction. The study found that, before incorporating this tradition, there was limited participation from key community actors, particularly traditional leaders. This research presents a culturally grounded model of disaster recovery, emphasizing the integration of Indigenous knowledge systems, such as Molibu, into formal post-disaster management strategies. It contributes to both academic discourse and practical policy by producing a Sinta-indexed journal article, a localized disaster management textbook, and recommendations for regional policymaking. The study also advocates for the institutionalization of local wisdom at the village level, ensuring its transmission across generations and its sustainability as a tool for resilience in disaster-prone communities.
INCREASING COMPETITIVE ADVANTAGE OF TOMATO FARMING BASED ON COST STRUCTURE WITH BUSINESS INTELLIGENCE APPROACH IN MINAHASA, INDONESIA Franky Reintje Tulungen; Jety Deisye Lempas; Jemly Lengkong; Joy M Oping; Heibert Lintong
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 2 (2025): Volume 9, Nomor 2, June 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i2.37270

Abstract

Tomatoes are an important food for humans whose production and price must be maintained so that the commodity remains available to humans. The objectives of the study are (i) analyzing the cost structure of tomato farming in Minahasa district, Indonesia, (ii) analyzing strategies to increase the competitive advantage of tomato farmers based on the cost structure of tomato farming with a business intelligence (BI) approach in Minahasa district, Indonesia and (iii) provide recommendations for the concept of tomato farming technology based on improving the structure of tomato farming costs in Minahasa district, Indonesia. This research uses a quantitative approach with the BI method and was carried out in the tomato production center of Minahasa district, North Sulawesi. The results found that (i) the production cost structure of Apple Tomato farming, namely variable costs of Rp 53,600,054.44 / ha or 78.74 percent and fixed costs of Rp 14,475,057.00 / ha or 21.26 percent. Based on cost structure, the variable cost that can be reduced is human labor cost and the fixed cost that can be reduced is stake cost. The recommended innovations that can be applied are using tractors to replace human labor to make beds, and replacing bamboo stakes with plastic pipes. This innovation can increase the profit of tomato farming from Rp 99,122,272.83 per ha to Rp 108,456,162.83 or an increase of Rp 9333890.00 (9.42%) per ha and the BEP price from Rp 2,300 per kg to Rp 1,987.82 per kg or reduce by Rp 312.18 (13.57%) per kg.
(RE)CONCEPTUALIZING LINEAR EQUATIONS: A SNAPSHOT FROM TEACHING AND LEARNING IN INDONESIA Dilham Fardian; Didi Suryadi; Sufyani Prabawanto; Al Jupri
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 3 (2025): Volume 9, Nomor 3, September 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i3.37450

Abstract

This study aimed to describe the zone of concept image differences in linear equations in one variable and analyze its potential impact on mathematics learning. This research was qualitative and followed a phenomenological approach. Mathematical praxeology was used to analyze the content of the knowledge to be taught (Indonesian curriculum). In contrast, didactic praxeology was used to analyze the teaching methods involved in the taught knowledge (teacher). This study explores information obtained from human and non-human sources. The object of the study was a seventh-grade mathematics textbook used in Indonesian middle schools, which refers to the Merdeka curriculum. The results showed differences in concept image between scholarly knowledge, knowledge to be taught, and knowledge regarding the topic of linear equations in one variable. Teachers failed to understand the information provided in the mathematics textbook that the equal sign in the concept of a linear equation in one variable represents a quantitative equation, meaning the expression on the left side of the equal sign is equal to the expression on the right side of the equal sign. This research presents an alternative praxeological reference model as an implication for the field of education in Indonesia, allowing students to generate new knowledge as justified true belief independently. Policymakers can also utilize the model to design linear equations in one variable materials that are more aligned with students' abilities by providing a structured approach that takes into account the students' prior knowledge and learning pace.
CRYSTALLINITY AND PHASE COMPOUNDS IN POLYVINYL ALCOHOL-MONTMORILLONITE NANOCOMPOSITES THROUGH X-RAY DIFFRACTION AND OPTICAL MICROSCOPY Blerina Papajani; Elvin Como; Albana Hasimi; Alfred Lako
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 9 No. 3 (2025): Volume 9, Nomor 3, September 2025
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v9i3.38754

Abstract

The aim of this study was to analyse modern advancements in X-ray diffraction and optical microscopy to enhance the characterization of polyvinyl alcohol-montmorillonite (PVA-MMT) nanocomposites. The development of advanced nanocomposites has garnered significant attention due to their potential applications in various fields. Among these, polyvinyl alcohol reinforced with montmorillonite has emerged as a promising material owing to its enhanced mechanical and thermal properties. However, a thorough understanding of the crystallinity and phase compounds in these nanocomposites is essential for optimizing their performance and quality. To achieve this goal, recent studies on these techniques were systematically reviewed, and their effectiveness, advantages, and limitations were evaluated. The results demonstrated that digital holography, fluorescence microscopy, and confocal microscopy significantly improve the visualization of microstructural features and provide detailed 3D images and quantitative phase contrast. In situ X-ray diffraction allowed real-time monitoring of structural changes, while small-angle X-ray scattering provided detailed information about the size, shape, and distribution of nanostructured features. Synchrotron X-ray diffraction offered very high resolution and sensitivity, facilitating precise characterization of the nanocomposite’s properties. By integrating these advanced techniques, the study established a comprehensive framework for understanding the crystallinity and phase composition of PVA-MMT nanocomposites, paving the way for optimized material development.

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