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INDONESIA
Indonesian Journal of Innovation Studies
Published by Universitas Muhammadiyah Sidoarjo
ISSN : -     EISSN : 25989936     DOI : https://doi.org/10.21070/ijins.v17i
Core Subject : Science, Education, Social, Engineering,
Computer Science & IT Education Engineering Law, Crime, Criminology & Criminal Justice
Indonesian Journal of Innovation Studies (IJINS) is a peer-reviewed journal published by Universitas Muhammadiyah Sidoarjo four times a year. This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.This journal aims is to provide a place for academics and practitioners to publish original research and review articles. The articles basically contains any topics concerning new innovation on all aspects. IJINS is available in online version. Language used in this journal is Indonesia or English.
Arjuna Subject : Umum - Umum
Articles 950 Documents
 91   92   93   94   95 
Tensile and Compressive Behavior of Sansevieria Fiber Polyester Starch Composite: Perilaku Tarik dan Tekan Komposit Serat Sansevieria, Poliester, dan Tepung Garida, Alzan Laga; Tjahjanti, Prantasi Harmi
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2040

Abstract

General Background Composite materials reinforced with natural fibers are increasingly investigated for lightweight engineering applications. Specific Background Sansevieria fiber composites with polyester matrices have shown promising mechanical properties, yet the modification of the matrix using amylum starch remains insufficiently documented. Knowledge Gap Limited studies report how varying amylum starch concentrations alter tensile and compressive responses of alkali-treated Sansevieria fiber composites. Aims This study determines the mechanical characteristics of Sansevieria fiber reinforced polyester composites with 5% NaOH treatment and amylum starch additions of 6–10 wt% through standardized tensile and compressive tests. Results Hand lay-up specimens tested under ASTM D-638 and ASTM D-695 show that starch addition increases tensile strength, with a maximum stress of 35.53 MPa at 8%, while compressive strength decreases, with the highest value of 108.27 MPa observed in specimens without starch. Novelty The work provides direct experimental comparison of dual mechanical behaviors under systematic starch concentration variations in a natural fiber composite system. Implications The findings guide material selection and matrix formulation for applications requiring higher tensile performance while considering compressive limitations. Keywords: Sansevieria Fiber, Polyester Composite, Amylum Starch, Tensile Strength, Compressive Strength Key Findings Highlights Peak tensile stress recorded at eight percent starch addition Compression capacity reduced with matrix modification Alkali treated fibers maintained load transfer during stretching
Work Posture Risk Classification Using OWAS QEC and Nordic Body Map: Klasifikasi Risiko Postur Kerja Menggunakan OWAS QEC dan Peta Tubuh Nordic Pranoto, Wiji; Putra, Boy Isma
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2041

Abstract

General Background Poor work posture in manual tasks is frequently associated with musculoskeletal complaints and reduced occupational safety. Specific Background Ergonomic assessment tools such as Ovako Work Posture Analysis System, Quick Exposure Check, and Nordic Body Map are commonly applied to evaluate physical workload and body discomfort among workers. Knowledge Gap However, integrated evaluation using multiple assessment methods within the same workplace remains limited, resulting in incomplete risk characterization. Aims This study aims to identify work posture risk levels, determine body parts experiencing discomfort, and propose corrective actions through combined OWAS, QEC, and Nordic Body Map assessments. Results Observational scoring and questionnaire analysis reveal several postures categorized as moderate to high risk, with dominant complaints in the back, shoulders, and lower limbs, indicating the need for immediate ergonomic intervention. Novelty The study provides a comprehensive cross-method comparison that strengthens consistency of risk identification within a single case study. Implications The findings support practical redesign of tasks, tools, and working positions to promote safer and more sustainable work systems in industrial settings. Keywords: Ergonomics, Work Posture, Musculoskeletal Disorders, OWAS, Quick Exposure Check Key Findings Highlights Several tasks classified into urgent corrective category Back and upper limb discomfort most frequently reported Task redesign proposed to reduce physical strain
Workload Analysis Reveals Excess Operator Capacity and Incentive Requirements: Analisis Beban Kerja Menunjukkan Kelebihan Kapasitas Operator dan Persyaratan Insentif Shabirin, Muhammad; Putra, Boy Isma
Indonesian Journal of Innovation Studies Vol. 27 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i2.2043

Abstract

General Background: Workload measurement is a critical component in manufacturing management to ensure balanced labor allocation and cost control. Specific Background: PT. XYZ, a wooden board manufacturing company, faces high production targets requiring operators to maintain consistent productivity without additional staffing. Knowledge Gap: Although workload analysis is commonly applied to determine optimal workforce levels, limited studies explicitly connect workload measurement results with structured incentive determination in manufacturing settings. Aims: This study aims to calculate operator workload using the Workload Analysis (WLA) method and determine appropriate incentives based on workload exceeding normal capacity. Results: Work sampling revealed productive percentages of 78%–83%, and WLA calculations showed workload levels of 106%–115%, indicating overcapacity conditions. The excess workload ranged from 6% to 15%, forming the basis for incentive allocation proportional to overload levels. Novelty: This study integrates work sampling, allowance calculation based on ILO standards, and workload analysis to establish a quantitative linkage between workload percentage and incentive determination. Implications: The findings provide a managerial framework for incentive policy formulation without increasing the number of operators, supporting cost control while maintaining production targets in manufacturing operations. Keywords: Workload Analysis, Work Sampling, Operator Productivity, Incentive Determination, Manufacturing Operations Key Findings Highlights Operator capacity levels exceeded standard workload thresholds across all stations. Productive activity percentages ranged between seventy-eight and eighty-three percent. Incentive allocation was proportionally calculated from quantified overload values.
Rotational Speed Variation Governs Impact Strength in HDPE Friction Stir Welding: Variasai Kecepatan Rotasi Mempengaruhi Kekuatan Dampak pada Pengelasan Gesekan Putar HDPE Firmansyah, Mohammad Hanif; Iswanto
Indonesian Journal of Innovation Studies Vol. 27 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i2.2044

Abstract

General Background: Friction Stir Welding is increasingly applied in polymer joining due to its solid-state mechanism and ability to produce stable joints without melting. Specific Background: High-Density Polyethylene requires appropriate process parameters to obtain optimal mechanical performance, particularly under impact loading. Knowledge Gap: Previous studies have discussed process parameters in metal and polymer welding, yet limited studies specifically address the relationship between rotational speed variation and impact strength characteristics in HDPE joints. Aims: This study aims to analyze the effect of spindle rotational speed variation on the impact strength and microstructural characteristics of HDPE joints produced by Friction Stir Welding. Results: The experimental findings demonstrate that rotational speed variation significantly alters impact strength values and joint morphology, where certain rotational settings generate more homogeneous structures and higher resistance to impact loading. Novelty: The study provides a focused experimental evaluation of rotational speed parameters on HDPE joints using impact testing and metallographic observation within a controlled setup. Implications: These findings contribute to parameter optimization strategies in polymer-based Friction Stir Welding and provide practical guidance for improving joint reliability in engineering applications. Keywords: Friction Stir Welding, High-Density Polyethylene, Rotational Speed, Impact Strength, Microstructure Key Findings Highlights Rotational parameter selection determines joint toughness performance. Homogeneous internal morphology correlates with higher absorbed energy values. Controlled spindle settings produce more stable polymer joint characteristics.
Supplier Performance Prioritization Using Analytical Hierarchy Process Framework: Penentuan Prioritas Kinerja Pemasok Menggunakan Kerangka Kerja Proses Hierarki Analitis Rachmawan, Yoga; Wahyuni, Hana Catur
Indonesian Journal of Innovation Studies Vol. 27 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i2.2045

Abstract

General Background: Supplier evaluation is a critical component of supply chain management to ensure operational continuity and procurement quality. Specific Background: Organizations require structured decision-making tools to assess multiple criteria in selecting and evaluating suppliers objectively. Knowledge Gap: Although the Analytical Hierarchy Process (AHP) has been widely applied, its structured implementation for supplier performance prioritization in the observed company context has not been systematically documented. Aims: This study aims to determine priority criteria and identify the best supplier alternative using the AHP framework. Results: The analysis produced weighted criteria rankings, verified consistency ratios below the acceptable threshold, and generated a final supplier priority order based on global weights. Novelty: The study presents a comprehensive hierarchical structuring of criteria and sub-criteria aligned with company-specific procurement conditions. Implications: The findings provide a structured decision support basis for managerial policy in supplier selection and contribute to applied research in supplier performance measurement using multi-criteria decision-making methods. Keywords: Analytical Hierarchy Process, Supplier Evaluation, Multi-Criteria Decision Making, Supply Chain Management, Decision Support System Key Findings Highlights Criteria weighting identified dominant factors in supplier assessment. Consistency ratio confirmed reliable pairwise comparison judgments. Final ranking determined a priority supplier based on global synthesis weights.
Technology Contribution Coefficient and Strategic Position of Knife Manufacturing IKM: Koefisien Kontribusi Teknologi dan Posisi Strategis Industri Manufaktur Pisau IKM Maulana, Muhammad Naufal; Wahyuni, Hana Catur
Indonesian Journal of Innovation Studies Vol. 27 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i2.2046

Abstract

General Background: Technology capability plays a critical role in transforming raw materials into value-added products within small and medium manufacturing enterprises. Specific Background: Krian Custom Tools, a knife manufacturing IKM established in 2013, relies on technoware, humanware, infoware, and orgaware components to maintain product quality and production consistency. Knowledge Gap: The technological components had not previously been quantitatively measured to determine their contribution level and corresponding strategic direction. Aims: This study aims to calculate the Technology Contribution Coefficient (TCC) using the technometric method and formulate strategic recommendations through SWOT analysis. Results: The overall TCC value reached 0.805, categorized as very good and modern. Component sophistication values were 0.689, 0.880, 0.858, and 0.847, and all components were positioned in Quadrant I of the SWOT diagram. Novelty: The study integrates technometric evaluation and SWOT positioning within a knife manufacturing IKM context. Implications: The findings provide a structured basis for strategic technology development and decision-making in small-scale manufacturing enterprises. Keywords: Technology Contribution Coefficient, Technometric Method, SWOT Analysis, Technology Components, Small Medium Enterprise Key Findings Highlights Aggregate coefficient indicates advanced technological classification level All evaluated elements positioned in aggressive strategic quadrant Quantitative assessment supports structured development planning
Cylinder Overhaul Restores Dimensional Accuracy and Emission Compliance: Perbaikan Silinder Memulihkan Ketepatan Dimensi dan Kepatuhan Emisi Fakhrudin; Mulyadi
Indonesian Journal of Innovation Studies Vol. 27 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i2.2047

Abstract

General Background: Multi Purpose Vehicles require proper engine maintenance to sustain operational reliability and emission compliance. Specific Background: Cylinder wear in MPV engines leads to loss compression, reduced power, and inefficient fuel combustion, requiring overhaul procedures involving inspection, oversize machining, component replacement, and emission testing. Knowledge Gap: Quantitative documentation of dimensional changes in cylinder blocks, pistons, and piston ring end gaps before and after overhaul in MPV engines remains limited. Aims: This study aims to analyze the cylinder overhaul process in an MPV engine and evaluate dimensional measurements and exhaust gas emissions after repair. Results: Initial measurements showed cylinder diameter reduction from the 72.00 mm standard to an average of 71.91 mm and piston wear below standard limits. After oversize machining and component replacement, cylinder diameter reached 72.48 mm and piston diameter 72.50 mm, while piston ring gaps returned within standard ranges. Emission testing indicated CO at 0.05%, HC at 25 ppm, and CO2 at 14.7%, meeting regulatory thresholds. Novelty: The study presents integrated dimensional measurement and emission validation within a single overhaul analysis. Implications: The findings provide practical technical guidance for accurate cylinder overhaul procedures in MPV maintenance. Keywords: Cylinder Overhaul, MPV Engine Maintenance, Dimensional Measurement, Piston Ring Clearance, Exhaust Emission Test Key Findings Highlights Pre-repair measurements identified significant wear beyond tolerance limits Post-repair machining achieved conformity with manufacturer specifications Exhaust parameters satisfied regulatory requirements after reassembly
Orange Data Mining Integration Improves Database Learning Scores in High School: Integrasi Penambangan Data Orange Meningkatkan Skor Pembelajaran Database di Sekolah Menengah Atas Santoso, Dian Rahma; Yunanto, Angga; Affandi, Aditya Krisna; Pamungkasari, Silvana Desy
Indonesian Journal of Innovation Studies Vol. 27 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i2.2051

Abstract

General Background: Database learning is a fundamental component of information technology education that requires both conceptual understanding and practical abilities such as designing relational database structures and writing accurate SQL queries. Specific Background: In many classroom settings, students struggle to understand database concepts because learning methods often rely on conventional instruction with limited variation and minimal technological support. Knowledge Gap: Although interactive learning tools and data visualization software have been suggested as alternatives, empirical classroom-based evidence regarding their use in database instruction at the secondary school level remains limited. Aims: This study investigates whether the integration of interactive learning modules with Orange Data Mining software is associated with measurable changes in database learning outcomes among Grade 11 students at SMAN 3 Sidoarjo. Results: Using a quantitative pre-test–post-test design involving 20 students, descriptive statistics showed an increase in mean scores from 76.50 in the pre-test to 83.30 in the post-test. Normality testing confirmed normally distributed data, and a paired sample t-test produced a significance value of 0.011 (<0.05), indicating a statistically significant difference between the two measurements. Novelty: The study demonstrates a classroom implementation in which interactive modules are combined with visual data mining tools to support both conceptual comprehension and practical data analysis activities in database learning. Implications: These findings provide empirical evidence supporting the integration of data visualization–based learning environments in secondary information technology education and suggest that technology-supported instructional strategies may contribute to improved database learning performance and student engagement. Highlights: Mean student performance increased from 76.50 before treatment to 83.30 afterward. Statistical testing showed a significant difference between pre-test and post-test results (p = 0.011). Visual data exploration activities helped learners interpret relational data patterns and query results more clearly. Keywords: Orange Data Mining, Interactive Learning Media, Online Learning, Data Analysis.
Santri Disciplinary Punishment Under the Child Protection Law Perspective: Hukuman Disiplin Santri Dalam Perspektif Undang Undang Perlindungan Anak Purnanda, Ledian; Adisel, Adisel; Riadi, Dayun
Indonesian Journal of Innovation Studies Vol. 27 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i2.1646

Abstract

General Background: Islamic boarding schools play a significant role in shaping students’ moral character and discipline through structured educational practices. Specific Background: Within pesantren education systems, disciplinary punishment is commonly applied to maintain order and encourage responsibility among santri. Knowledge Gap: However, growing public concern regarding children’s rights raises questions about whether disciplinary practices in pesantren align with the legal principles of child protection. Aims: This study aims to analyze the forms of punishment implemented at Pondok Pesantren Modern Darussalam Kepahiang and examine their compatibility with the provisions of the Child Protection Law. Results: Using a qualitative descriptive approach with data collected through observation, interviews, and documentation, the study identifies three main categories of punishment: physical, psychological, and social sanctions. These disciplinary measures are generally intended to foster discipline, responsibility, and moral awareness rather than to cause harm. When implemented within educational boundaries, the practices are considered consistent with Articles 54 and 59 of the Child Protection Law, while teachers are also legally protected under Law No. 14/2005 on Teachers and Lecturers. Novelty: This research provides a pedagogical and juridical analysis of pesantren disciplinary practices by integrating perspectives of Islamic educational tradition with national child protection regulations. Implications: The findings highlight the importance of establishing clear disciplinary guidelines and providing training for educators to ensure that punishment practices remain educational, ethical, and legally compliant in pesantren environments. Highlights • Identification of three disciplinary sanction categories applied in Islamic boarding school environments• Psychological responses of students reveal varied perceptions toward institutional discipline practices• Absence of formal disciplinary guidelines indicates the need for structured regulatory frameworks Keywords Islamic Boarding School; Child Protection Law; Santri Discipline; Educational Punishment; Pesantren Education
H.A.R. Tilaar Multicultural Education in Inclusive Indonesian Learning: Pendidikan Multikultural H.A.R. Tilaar dalam Pembelajaran Inklusif Indonesia Anggita, Lonie; habibullah, Jumadil Awali; Nurlaili, Nurlaili
Indonesian Journal of Innovation Studies Vol. 27 No. 2 (2026): April
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v27i2.1708

Abstract

General Background: Indonesia is characterized by cultural, ethnic, religious, and social diversity that requires educational strategies capable of fostering tolerance and national cohesion. In this context, multicultural education becomes an essential approach for cultivating inclusive values within the educational system. Specific Background: H.A.R. Tilaar is recognized as a prominent Indonesian thinker who conceptualized multicultural education as a philosophical and pedagogical foundation for managing diversity in education. His perspective emphasizes education as a process of humanization and liberation while promoting democratic and inclusive learning environments. Knowledge Gap: Although Tilaar’s ideas are widely discussed in educational discourse, comprehensive studies connecting his philosophical concepts with concrete learning practices in Indonesian classrooms remain limited. Aims: This study aims to analyze Tilaar’s concept of multicultural education and examine its application in the learning process. Results: Using a qualitative library research approach with descriptive analysis, the findings show that Tilaar’s multicultural education promotes dialogical pedagogy, contextual learning, and the role of teachers as transformative agents. Its application in classroom practice includes integrating local cultural values, developing inclusive learning materials, creating democratic classroom interactions, and implementing authentic assessment that considers attitudes such as empathy and tolerance. Novelty: The study provides a comprehensive perspective by integrating Tilaar’s philosophical ideas with practical strategies for implementing multicultural education in learning processes. Implications: These findings demonstrate that Tilaar’s thought offers both philosophical and practical foundations for implementing multicultural education that supports inclusive nationalism and strengthens Indonesia’s cultural resilience within a pluralistic society. Highlights • Tilaar’s perspective frames multicultural education as a process of humanization and liberation in schooling.• Dialogical pedagogy and integration of local cultural values shape democratic classroom practices.• Inclusive learning materials and authentic assessment support tolerance and cultural awareness among students. Keywords Multicultural Education; H.A.R. Tilaar; Inclusive Learning; Dialogical Pedagogy; Cultural Diversity    

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