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INDONESIA
Indonesian Journal of Advanced Research (IJAR)
Published by PT FORMOSA CENDEKIA GLOBAL
ISSN : -     EISSN : 29860768     DOI : https://doi.org/10.55927/ijar.v2i4
Core Subject : Science, Education, Engineering,
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Languange, Linguistic, Communication & Media
Indonesian Journal of Advanced Research (IJAR) is an open-access and peer-reviewed journal, published by Formosa Publisher, which is mainly intended for the dissemination of research results by researchers, academics, and practitioners in many fields of science and technology. IJAR publishes articles monthly. The editors welcome submissions of papers describing recent theoretical and experimental research related to: (1) Theoretical articles; (2) Empirical studies; (3) Case studies; (4) Literature Review and (5) Applications of recent technology advancement.
Arjuna Subject : Umum - Umum
Articles 562 Documents
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Measuring Production Periodicity in a 5.56 mm Cartridge Case Manufacturing System Using Max-Plus Algebra Wiwit Melinasari; Edy Sulistyadi; Ida Bagus Made Putra Jandhana; Suroto
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.16915

Abstract

This study measures production periodicity in a 5.56 mm cartridge case manufacturing system using Max-Plus Algebra. The manufacturing system was modeled as a deterministic discrete event system consisting of eleven sequential stages, one lot of 20,000 units, and inter-process waiting time as a model parameter. A max-plus state-space model was formulated to capture temporal dependencies among stages, followed by eigenvalue analysis and iterative simulation in MATLAB. The results show a minimum production cycle time of 109.649 minutes, with the fire-hole drilling stage identified as the critical production stage. The model clarifies the stable production period of a pipeline manufacturing system and supports stage-focused production evaluation.
The Effect of Digital Banking, Capital Adequacy Ratio, and Operational Efficiency on the Financial Performance of Islamic Commercial Banks in Indonesia Rahma Sri Endah Mahesti; Hardiyanto Wibowo; Bima Cinintya Pratama; Nur Isna Inayati
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.16916

Abstract

This study is motivated by an apparent contradiction in Indonesian Islamic banking: the number of digital banking users has grown steadily, yet the profitability of Islamic commercial banks (Bank Umum Syariah, BUS) has remained volatile. Prior evidence on the determinants of Islamic bank profitability also remains inconclusive. This study therefore examines the effect of digital banking, capital adequacy (CAR), and operational efficiency (BOPO) on financial performance proxied by return on assets (ROA). Using a quantitative approach, secondary data were collected from the annual reports of 13 Islamic commercial banks in Indonesia over the 2019–2023 period, selected through purposive sampling, yielding 55 bank-year observations for analysis. Data were analysed using multiple linear regression in IBM SPSS Statistics, preceded by classical assumption testing. The results show that digital banking has no significant effect on ROA; CAR has a positive and significant effect on ROA, so the hypothesis predicting a negative effect is not supported; and BOPO has a negative and significant effect on ROA. Jointly, the three variables significantly explain variation in ROA. These findings indicate that, over the observed period, capital adequacy and cost efficiency were the dominant internal determinants of Islamic bank profitability, whereas digital adoption measured by user numbers had not yet translated into short-term earnings. The study contributes to the financial intermediation literature by showing that digital adoption creates economic value only when it is converted into transactions, fee income, or cost savings, and offers practical guidance for bank management and regulators.
AKNOP, Budget Realization, and River Structure Performance in Flood Mitigation: A Quantitative Study of the Progo River Basin as Non-Military Defense Infrastructure David Carlos Methlis Mone; Jupriyanto; Gregorius Henu Basworo
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.16917

Abstract

River infrastructure sustains irrigation, flood control, and regional connectivity, yet its upkeep is often constrained by budgets that fall short of measured needs. This study examines how the Actual Operation and Maintenance Needs Index (AKNOP) value and budget realization relate to the physical condition of river structures across the Progo River Basin, and places that relationship within a non-military defense framework. A census of 88 structures was analyzed through rank regression once the normality assumption was violated. Both AKNOP value and budget realization significantly shaped structural condition, together explaining 87.1 percent of its variation. The negative coefficients trace back to volume-based cost estimation and urgency-driven budget allocation rather than wasteful spending, an interpretation corroborated by expert validation.
Development of Physics Co-Curricular Worksheets Based on Mabbulo Sipeppa Local Wisdom to Support Deep Learning Dedy Kurniawan; M. Agus Martawijaya; Khaeruddin
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.16918

Abstract

The integration of local wisdom into physics co-curricular activities is important to support deep learning and strengthen students’ critical reasoning skills. This study aims to develop and evaluate a physics co-curricular worksheet based on mabbulo sipeppa local wisdom to support critical reasoning in deep learning. The research employed a Research and Development approach using the Borg & Gall procedure integrated with the ADDIE model, consisting of Analysis, Design, Development, Implementation, and Evaluation stages. Data were collected through interviews, questionnaires, and tests. The developed worksheet was evaluated in terms of validity, practicality, and effectiveness. The results showed that the worksheet achieved a construct validity index of 1.00, indicating a valid category. The feasibility assessment reached 85.42% from media experts and 85.83% from material experts, both categorized as highly feasible. Practicality results showed positive responses from teachers (97%) and students (98%), indicating that the worksheet is practical for implementation. The effectiveness test produced an average N-gain score of 0.6 (moderate category) with an effectiveness percentage of 60%, interpreted as moderately effective. These findings indicate that the developed worksheet is valid, practical, and sufficiently effective in supporting students’ critical reasoning within the context of deep learning through the integration of mabbulo sipeppa local wisdom.
Development of Learning Interactive Media Assisted by Google Sites in the Subject of Light Wave for Increased Learning Outcome and Learning Motivation Halwiah; Subaer; Khaeruddin
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.16919

Abstract

The integration of interactive digital media in physics learning is essential to address students’ difficulties in understanding abstract concepts such as light waves. This study aims to develop and evaluate interactive learning media assisted by Google Sites for light wave material. The research employed a Research and Development approach using the ADDIE model. The participants were 31 twelfth-grade students and one physics teacher. Data were collected using validation sheets, learning outcomes tests, motivation questionnaires, and response questionnaires. The results indicated that the developed media met the criteria of validity, effectiveness, and practicality. The average validity score reached 97.31%, while the classical completeness of learning outcomes was 96.77% with a mean score of 85.87. Students’ learning motivation increased by 18.72%, supported by the Wilcoxon test showing that all students experienced improvement. The practicality was reflected in positive responses from students (83.14%) and teachers (100%). These findings demonstrate that Google Sites-assisted interactive media effectively enhances students’ conceptual understanding and learning motivation, particularly in learning abstract physics concepts, and supports the implementation of student-centered learning in the digital era.
Ndumma Banana Leaf: A Local Lanny Tradition from a Christian Soteriological Perspective Daniel Wenda; Milinggen Kogoya
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.16921

Abstract

This study aims to examine the meaning and role of the Ndumma Banana Leaf tradition in the lives of the Lanny people, explore the salvific values it contains, analyze its relevance from a Christian soteriological perspective, and contribute to the development of contextual theology that respects local Papuan culture. The study uses a qualitative approach with a literature study method. Data were obtained from various scientific sources that discuss Lanny culture, local Papuan traditions, contextual theology, and Christian soteriology. The data were analyzed using content analysis and contextual hermeneutics to examine the relationship between local cultural values and Christian teachings on salvation. The results show that the Ndumma Banana Leaf tradition contains the values of acceptance, reconciliation, sacrifice, solidarity, togetherness, and responsibility for the environment. These values are in harmony with the principles of Christian soteriology that emphasize the restoration of human relations with God, others, and all creation. This study also found that the Ndumma Banana Leaf can be understood as a cultural symbol that functions as a theological bridge in explaining the meaning of salvation contextually to the Lanny people. The novelty of this research lies in its attempt to interpret the Ndumma Banana Leaf tradition not only as a cultural heritage but also as a medium for theological reflection that reconciles the Gospel and local culture without losing their respective identities. These findings reinforce the importance of dialogue between church, culture, and society in the contemporary Papuan context.
Policy Implementation Strategies for Enhancing Community Participation in the Complete Systematic Land Registration Program: A Case Study of the Gowa Regency National Land Agency Nur Fajriani S; Wafa Khairunisa
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.16936

Abstract

This study aims to analyze the implementation strategy of the National Land Agency (BPN) in increasing community participation in the Complete Systematic Land Registration (PTSL) Program using Edward III's policy implementation model. A qualitative case study approach was employed through observation, interviews, and document analysis involving BPN officers, village PTSL implementers, and the community in Gowa Regency. The findings indicate that effective policy implementation is achieved through the synergy of communication, resources, disposition, and bureaucratic structure. These dimensions collectively strengthen public awareness, trust, and participation in land registration. The study enriches Edward III's implementation model by highlighting collaborative governance practices at the local level.
The Role of Digital Promotion in Mediating the Effects of Influencers, Social Media, and Tourism Events on the Competitiveness of Agrotourism (A Case Study of Sangkanika Edugarden Agrotourism) Fahmi Naha Bafil’Amali; Wachdijono; Akhmad Jaeroni
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.16970

Abstract

Promotion in the tourism sector plays a crucial role in introducing destinations, building a positive image, and increasing tourists' intention to visit. However, many tourism destination managers have yet to implement promotional strategies optimally. This study aims to examine the effects of influencers, social media, and tourism events on digital promotion and their implications for the competitiveness of Sangkanika Edugarden Agrotourism. A quantitative research design was employed using purposive sampling to select 132 respondents who had visited Sangkanika Edugarden Agrotourism. Data were collected through a structured questionnaire using a five-point Likert scale during April–May 2026 and analyzed using path analysis with IBM SPSS Statistics 26. The findings indicate that influencers, social media, and tourism events have positive and significant effects on digital promotion. Furthermore, digital promotion has a positive and significant effect on destination competitiveness. The results also reveal that digital promotion mediates the effects of influencers, social media, and tourism events on competitiveness. These findings suggest that enhancing destination competitiveness depends not only on the effective utilization of influencers, social media, and tourism events but also on the ability to integrate these three marketing strategies through effective digital promotion. This study contributes to the development of digital marketing strategies for agrotourism destinations.
Design of an Auditorium within the Quality University of Berastagi Campus Sandros Timoti Tambun; Dasrizal; Ferdinand Sinuhaji
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.17018

Abstract

This study aims to design the Quality University Berastagi Auditorium Building as a facility capable of supporting various academic and non-academic activities through the application of the Green Architecture concept. The concepts examined include energy efficiency, natural lighting and ventilation, the use of environmentally friendly materials, rainwater management, and room acoustic quality. The method used was qualitative descriptive research through the collection of primary and secondary data, literature review, case studies, site analysis, and space requirements analysis conducted during the design process. The results of the study produced an auditorium design that is functional, comfortable, energy-efficient, adaptable to the climate of Berastagi, and supports sustainable and environmentally conscious campus development.
Analysis and Planning of Citraland Cirebon Residential Area Development Erick Wahyu Frisdiantoro; Awliya Tribhuwana
Indonesian Journal of Advanced Research Vol. 5 No. 8 (2026): August 2026
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v5i8.17027

Abstract

The development of residential areas requires comprehensive planning to ensure land suitability, adequate infrastructure, and compliance with spatial planning regulations. CitraLand Cirebon is one of the integrated residential developments in Cirebon City that continues to expand in response to increasing housing demand. This study aims to analyze the existing condition of the residential area and formulate appropriate development planning based on land suitability, infrastructure, public facilities, utilities, and spatial planning conformity. The research employed a descriptive qualitative approach using a case study method. Primary data were collected through field observations and documentation, while secondary data were obtained from planning documents, spatial planning regulations, and supporting information provided by the developer. The collected data were analyzed descriptively by comparing the existing conditions with the planned development and applicable spatial planning policies. The results indicate that CitraLand Cirebon has developed progressively with adequate accessibility, internal road networks, drainage systems, and supporting public facilities. Nevertheless, several parts of the area still require further infrastructure improvement and spatial arrangement to optimize residential functions and support sustainable development. The study concludes that land suitability, the availability of infrastructure, public facilities and utilities (PSU), and compliance with spatial planning regulations are the primary factors influencing the successful development of the residential area. Therefore, further development should prioritize infrastructure enhancement, integrated spatial planning, and sustainable environmental management to improve residential quality and ensure long-term urban development.

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