E-Journal UMSIDA (Universitas Muhammadiyah Sidoarjo)
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Preventive Maintenance Planning Using Age Replacement Method for Head Router Machines: Perencanaan Pemeliharaan Preventif Menggunakan Metode Penggantian Berdasarkan Usia untuk Mesin Router Kepala
Get PDFGeneral Background: In the current industrial era, uninterrupted machine performance is crucial to minimize production losses. Specific Background: At PT BMN Pasuruan, the Head Router machine frequently experiences unplanned downtime, particularly in its bearing and spindle components. Knowledge Gap: While corrective maintenance has been applied, there is limited research on systematic preventive maintenance planning for these components using quantitative reliability models. Aims: This study applies the Age Replacement method to determine optimal replacement times and inspection intervals for the bearing and spindle, with the goal of reducing unplanned downtime. Results: Findings reveal that the optimal replacement time is 59,240 minutes for the bearing and 70,740 minutes for the spindle, with recommended inspection intervals of 340 hours (15 days) and 280 hours (12 days), respectively. Implementation of this strategy reduces downtime by 78.57% for the bearing and 77.69% for the spindle. Novelty: The research demonstrates the practical application of Age Replacement in a real industrial setting, offering measurable improvements in operational efficiency. Implications: Beyond solving PT BMN Pasuruan’s specific challenges, the study provides a transferable model for other manufacturing industries dependent on precision equipment.
Highlights:
Optimized replacement times minimize unexpected machine failures.
Inspection intervals significantly reduce downtime.
Age Replacement method improves industrial efficiency.
Keywords: Preventive Maintenance, Age Replacement, Downtime Reduction, Spindle, Bearin
Index Card Match Model for Improving Mathematics Learning Outcomes: Model Kartu Indeks untuk Meningkatkan Hasil Pembelajaran Matematika
Get PDFGeneral Background: Student motivation and learning outcomes in mathematics at the elementary level remain a persistent challenge. Specific Background: At SDN 05/II Air Gemuruh, Grade IV students demonstrated low engagement and achievement in mathematical sentences and calculations due to monotonous, teacher-centered instruction. Knowledge Gap: Few studies have systematically examined interactive strategies such as the Index Card Match model in improving both the learning process and outcomes in mathematics. Aims: This study aimed to enhance mathematics learning motivation and achievement by implementing the Index Card Match model through Classroom Action Research (CAR). Results: Conducted in two cycles with 20 students, findings revealed significant improvements in teaching quality, student engagement, and mastery. Teacher performance scores rose from 61.11% to 88.89%, the number of students in the “very good” category increased from 20% to 45%, and mastery learning outcomes improved from 55% to 80%. Novelty: This research provides empirical evidence of the Index Card Match model’s effectiveness in fostering active participation and sustained motivation in mathematics learning. Implications: The findings suggest that integrating interactive models can transform learning environments, making mathematics more engaging and effective for primary school students.
Highlights:
Improved teacher performance and student engagement.
Significant increase in mastery of mathematics.
Index Card Match proven effective in primary education.
Keywords: Index Card Match, Mathematics Learning, Student Motivation, Classroom Action Research, Learning Outcomes
Strengthening Reading Mastery through Course Review Horey in Elementary Students: Penguatan Kemampuan Membaca Melalui Course Review Horey pada Siswa Sekolah Dasar
Get PDFBackground: Education is a key driver in shaping students’ knowledge and character, with Indonesian language literacy being crucial at the elementary level. Specific Background: Many fifth-grade students at SDN 224/II Sijau struggled with reading comprehension and failed to meet the Minimum Completion Criteria, showing low motivation and participation. Knowledge Gap: Although the Course Review Horey (CRH) model has been studied, few works explicitly examined its structured use in improving reading comprehension for low-participation students. Aims: This study aimed to describe how CRH could strengthen reading comprehension and participation in Indonesian language lessons. Results: Through two cycles of classroom action research, teacher performance improved (82.5% to 92.5%), student engagement increased (68.5% to 90.6%), and mastery learning rose from 62.5% to 94%. Novelty: The research applied CRH systematically across two action cycles, creating a lively, game-like, student-centered environment. Implications: Findings suggest CRH can be adopted widely to support literacy development and active participation in elementary language learning.
Highlight:
Students’ reading comprehension improved significantly after two CRH cycles
Teachers became more skilled at managing interactive, student-centered lessons
CRH fostered engagement, motivation, and better learning atmosphere
Keywords: Course Review Horey, Reading Comprehension, Student Participation, Elementary Education, Classroom Action Researc
Product Quality and Brand Image as Drivers of Repeat Purchase Decisions: Kualitas Produk dan Citra Merek sebagai Faktor Penentu Keputusan Pembelian Ulang
No full textGeneral Background: Rapid technological advancements have transformed consumer behavior, especially in the smartphone industry, where performance, design, and innovation are key competitive aspects. Specific Background: Samsung, as a leading smartphone brand, continuously enhances its product quality and brand image to sustain customer loyalty, particularly with flagship models such as the Galaxy S25 Ultra. Knowledge Gap: Despite extensive studies on purchasing behavior, limited research integrates product quality, brand image, and purchase decisions as mediating factors influencing repurchase intention in premium smartphone contexts. Aims: This study investigates the effect of product quality and brand image on repurchase intention, mediated by purchase decision, among Samsung Galaxy S25 Ultra users in Indonesia. Results: Using Structural Equation Modeling (SEM) with AMOS on 100 respondents, findings reveal that brand image significantly influences purchase decision and repurchase intention, while product quality significantly impacts repurchase but not purchase decision. Purchase decision does not mediate the relationship effectively. Novelty: The integration of SEM-based mediation analysis provides a comprehensive understanding of causal relationships among variables in digital-era consumer behavior. Implications: Strengthening brand perception and maintaining consistent product quality are essential strategies for fostering long-term customer loyalty in competitive smartphone markets.
Highlights:
Brand image significantly drives both purchase and repurchase behavior.
Product quality impacts repurchase but not initial purchase decisions.
Purchase decision shows weak mediation between quality, image, and repurchase.
Keywords: Product Quality, Brand Image, Purchase Decision, Repurchase Intention, SEM-AMO
Hemostasis Alterations and Placental Outcomes in Preeclampsia: Perubahan Hemostasis dan Kondisi Plasenta pada Preeclampsia
Get PDFGeneral Background: Pregnancy induces profound physiological changes in the hemostasis system, balancing procoagulant and fibrinolytic mechanisms to ensure maternal and fetal survival. Specific Background: Preeclampsia disrupts this balance, leading to hypercoagulation, endothelial dysfunction, and compromised placental circulation. Knowledge Gap: Despite numerous studies, the specific patterns of coagulation system alterations and their diagnostic value in preeclampsia remain incompletely characterized. Aims: This article aims to analyze the dynamic changes in coagulation and fibrinolysis during normal pregnancy and to compare them with the pathological shifts occurring in preeclampsia. Results: Findings demonstrate increased procoagulant activity, elevated D-dimer levels, reduced fibrinolysis, and decreased antithrombin III activity in preeclampsia. These changes contribute to placental insufficiency, fetal growth restriction, and heightened maternal risk of thrombohemorrhagic complications. Novelty: The study highlights the prognostic importance of D-dimer levels and platelet indices as accessible markers to monitor hemostasis dysfunction in preeclampsia. Implications: Early identification of coagulation markers offers prospects for improving diagnostic precision, guiding therapeutic strategies, and preventing severe maternal-fetal complications in preeclampsia.
Highlight:
Altered coagulation and fibrinolysis in preeclampsia drive maternal and fetal risks.
D-dimer and platelet indices emerge as practical prognostic markers.
Early detection of hemostasis dysfunction enables better clinical outcomes.
Keywords: Preeclampsia, Coagulation Cascade, Fibrinolysis, D-Dimer, Hemostasis
Intrinsic and Extrinsic Motivations on Willingness to Communicate Among Iraqi Learners
No full textGeneral Background: Motivation is a cornerstone of second language acquisition (SLA), shaping learners’ engagement and communicative competence. Specific Background: In contexts like Iraq, where English is taught as a foreign language (EFL) with limited authentic exposure, extrinsic motives—such as exams and societal expectations—often outweigh intrinsic interest, potentially constraining learners’ willingness to communicate (WTC). Knowledge Gap: While studies in Asian and Western EFL/ESL settings have explored motivation–WTC links, little empirical research addresses pre-intermediate Iraqi learners, a group particularly vulnerable to anxiety and rote-based instruction. Aims: This study investigated which type of motivation dominates among Iraqi EFL students, how motivation relates to WTC, and which orientation predicts it most strongly. Results: Data from 40 female learners in Maysan revealed extrinsic motivation dominance (M = 29.03) over intrinsic (M = 19.93), yet intrinsic showed a stronger correlation with WTC (r = .36, p < .01) and was the only significant predictor (β = .33, p < .001), explaining 10.17% of variance. Novelty: These findings challenge assumptions that extrinsic pressures drive communication in EFL, highlighting instead intrinsic motivation’s centrality. Implications: Pedagogically, fostering intrinsic interest through autonomy-supportive, communicative tasks may enhance WTC and address cultural-educational constraints in Iraq.
Highlights:
Intrinsic motivation is a stronger predictor of WTC than extrinsic factors.
Iraqi EFL learners show dominance of extrinsic over intrinsic motivation.
Pedagogical focus on intrinsic interest can enhance communicative competence.
Keywords: Intrinsic Motivation, Extrinsic Motivation, Willingness to Communicate, Iraqi EFL Learners, Second Language Acquisitio
Education Level and Financial Management in Micro, Small, and Medium Enterprises Using Mudharabah Financing
No full textGeneral Background: Micro, small, and medium enterprises (UMKM) are key drivers of local economic growth, yet often face financing challenges. Specific Background: In East Lombok, Baitul Maal wa Tamwil (BMT) institutions provide mudharabah financing, where educational background is used as a determinant of financial eligibility. Knowledge Gap: However, limited studies have explored how educational attainment affects financial management and risk mitigation in sharia-based financing. Aim: This study investigates the role of education level in improving financial management and reducing financing risks in BMT Tunas Harapan Syantara Montong Gading. Results: Using qualitative methods through interviews, observations, and documentation, findings reveal that prioritizing clients with at least secondary education significantly reduced non-performing loans from 30% in 2021 to 4.6% in 2024, while membership grew from 465 to 1,181. Novelty: Unlike conventional post-default approaches, this study highlights a preventive model where borrower education is integrated into risk assessment and Islamic governance practices. Implications: The results underscore that education-based financing strategies strengthen financial literacy, ensure business sustainability, and contribute to inclusive sharia economic development at the micro level
Highlights:
Education-based eligibility reduces financing risks.
Non-performing loans declined sharply (30% → 4.6%).
Preventive model strengthens sharia financial sustainability.
Keywords: Education Level, Financial Management, UMKM, Mudharabah Financing, Risk Mitigatio
C-Reactive Protein and Interleukin-6 as Diagnostic Biomarkers for Bacterial Sepsis: Protein C-Reaktif dan Interleukin-6 sebagai Biomarker Diagnostik untuk Sepsis Bakteri
Get PDFGeneral Background: Sepsis merupakan kondisi berbahaya akibat respon imun yang tidak terkontrol terhadap infeksi bakteri, sehingga diagnosis cepat sangat penting untuk mencegah kematian. Specific Background: Gejala klinis sepsis sering tidak spesifik, sehingga diperlukan biomarker yang dapat membantu deteksi dini. CRP dan IL-6 banyak diteliti karena berperan penting dalam respon fase akut terhadap infeksi. Knowledge Gap: Namun, bukti mengenai akurasi diagnostik dan standar cut-off keduanya masih terbatas dan bervariasi pada populasi berbeda. Aim: Penelitian ini bertujuan mengevaluasi nilai diagnostik CRP dan IL-6 dalam membedakan pasien sepsis bakteri dari individu sehat serta menilai sensitivitas, spesifisitas, dan akurasinya. Results: Studi kasus-kontrol dengan 100 pasien sepsis dan 50 kontrol sehat menunjukkan kadar CRP (65.4 ± 20.3 mg/L) dan IL-6 (72.6 ± 25.7 pg/mL) meningkat signifikan (p < 0.001), dengan akurasi diagnostik 89% dan 90%. Novelty: Temuan ini menegaskan potensi CRP dan IL-6 sebagai biomarker yang saling melengkapi dalam deteksi dini sepsis. Implications: Penerapan biomarker ini berpotensi meningkatkan ketepatan diagnosis dan intervensi lebih awal, meski penelitian lanjutan diperlukan untuk standardisasi.Highlight :
CRP and IL-6 were significantly elevated in bacterial sepsis patients.
Both biomarkers showed high sensitivity, specificity, and accuracy.
Results highlight CRP and IL-6 as reliable early diagnostic markers.
Keywords : Bacterial Sepsis, C-Reactive Protein (CRP), Interleukin-6 (IL-6), Inflammatory Biomarkers, Diagnostic Accurac
Kyai Hegemony as Proxy Marriage Guardians within Madurese ‘Urf Tradition
No full textGeneral Background: The Madurese community places the kyai at the center of its religious and social structure, viewing them as authoritative figures whose influence extends into key life rituals such as marriage. Specific Background: In many cases, families in Madura appoint kyai as proxy guardians (wakil wali nikah), despite legal guardianship traditionally belonging to male relatives by lineage. This practice is deeply rooted in cultural and religious reverence. Knowledge Gap: However, limited scholarly attention has been paid to how this custom aligns with Islamic jurisprudence and local tradition (‘urf) within the framework of social hegemony. Aims: This study aims to analyze the kyai’s hegemonic role as proxy guardians of marriage from the perspective of ‘urf, examining how this practice gains legitimacy both socially and theologically. Results: The findings reveal that the appointment of kyai as marriage guardians is a form of voluntary hegemony grounded in communal trust and cultural continuity, deemed valid under Islamic law as long as it does not contradict Sharia principles and receives the consent of the biological guardian. Novelty: This research uniquely integrates Gramsci’s theory of hegemony with Islamic legal concepts to interpret a localized religious practice. Implications: It highlights the dynamic adaptability of Islamic law within indigenous traditions, illustrating the harmonious coexistence between ‘urf and Sharia in sustaining socio-religious cohesion in Madura.
Highlights:
The kyai holds religious and social authority legitimized by community trust.
The practice of appointing kyai as marriage guardians aligns with valid ‘urf in Islamic law.
Reflects harmonious integration of Islamic principles with Madurese cultural traditions.
Keywords: Kyai, Marriage Guardian, ‘Urf, Hegemon
Strategic Growth and Market Position of Artel Electronics Company
No full textGeneral Background: The consumer electronics industry in Central Asia is experiencing rapid growth, driven by rising demand for affordable and innovative household technologies. Specific Background: In Uzbekistan, Artel Electronics has emerged since 2011 as a dominant local manufacturer, expanding from gas stoves to a portfolio of over 1,500 products across 33 categories. Knowledge Gap: Despite its strong domestic presence, limited international reach, digital engagement, and reliance on local suppliers constrain its global competitiveness. Aims: This study analyzes Artel’s strategic position through internal and external assessments, SWOT, and BCG matrix, to evaluate its marketing mix in B2B and B2C contexts. Results: Findings reveal that Artel’s success stems from its balance of quality and affordability, robust distribution network, and product diversification, while weaknesses include constrained global presence and insufficient e-commerce penetration. Novelty: Unlike prior analyses, this study integrates PESTEL and BCG perspectives to highlight how Artel can leverage sustainable practices, digital platforms, and international market entry to strengthen its positioning. Implications: The research suggests that adopting eco-friendly innovation, expanding digital channels, and targeting niche global segments will enhance Artel’s competitiveness, ensuring sustainable growth in a highly dynamic global electronics market.
Highlights:
Strong brand recognition and product diversification drive Artel’s market leadership.
Limited international presence and weak digital channels remain key challenges.
Sustainable innovation and global expansion are crucial for future growth.
Keywords: Artel Electronics, Local Business, Business Clients