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Academia Open
Published by Universitas Muhammadiyah Sidoarjo
ISSN : -     EISSN : 27147444     DOI : 10.21070/acopen.11.2026.12985
Core Subject : Health,
Medicine & Pharmacology Public Health
Academia Open is published by Universitas Muhammadiyah Sidoarjo published 2 (two) issues per year (June and December). 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 research or review. Academia Open is available in online version. Language used in this journal is Indonesia or English.
Arjuna Subject : Profesi Kesehatan - Profesi Kesehatan (Lain-Lain)
Articles 2,389 Documents
 156   157   158   159   160 
Stock Returns under Interest Rate and Volatility Pressure with Green Innovation and Exchange Rate Roles: Return Saham di bawah Tekanan Suku Bunga dan Volatilitas dengan Inovasi Hijau dan Peran Nilai Tukar Ni Ketut Widya Utami; Anantawikrama Tungga Atmadja; Lucy Sri Musmini
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11635

Abstract

Background: The Indonesian capital market, particularly the property and real estate sector, is highly sensitive to macroeconomic fluctuations, especially during periods of global uncertainty such as 2020–2024. Specific Background: External factors like interest rates, inflation, and index volatility influence investor behavior and corporate performance, yet their interaction with sustainability dimensions remains underexplored. Knowledge Gap: Prior studies rarely assess the moderating role of green technology innovation and exchange rates in the macroeconomic–stock return relationship. Aims: This study investigates the impact of Bank Indonesia’s interest rate, index volatility, and inflation on stock returns, while testing the moderating effects of the Rupiah exchange rate and green technology innovation. Results: Interest rates and index volatility significantly reduce stock returns, while inflation is insignificant. The exchange rate shows no moderating effect. However, green technology innovation significantly moderates the relationship between interest rates and stock returns, indicating its buffering potential. Novelty: The inclusion of green innovation as a moderating variable presents a novel perspective in sustainable financial research within emerging markets. Implications: These findings suggest that adopting green innovations enhances corporate resilience to macroeconomic shocks and supports investor confidence, highlighting its strategic role in policy-making and ESG-oriented investment frameworks.Highlight : Interest rates and index volatility significantly reduce stock returns in the property sector. Green technology innovation moderates the impact of interest rates on stock returns. Exchange rate and inflation show no significant moderating effect on stock returns. Keywords : Stock Returns, Interest Rates, Index Volatility, Inflation, Green Technology Innovation, Exchange Rate
Major Risk Factors for Diabetic Retinopathy Complications in Type 2 Diabetes Mellitus: Faktor Risiko Utama Komplikasi Retinopati Diabetik pada Diabetes Melitus Tipe 2 Rapael Ginting; Masryna Siagian; Cantika Viona Adytia Hutagalung; Cherin Lolenstine
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11637

Abstract

Background: Diabetes mellitus affects over 415 million people globally and is projected to reach 642 million by 2040, with diabetic retinopathy (DR) becoming a major cause of preventable blindness. Specific background: In Indonesia, DR prevalence remains high, yet early detection is often delayed, particularly in community and private clinic settings. Knowledge gap: Most studies on DR risk factors have been conducted in tertiary hospitals or general populations, while evidence from community-based ophthalmology clinics is limited. Aim: This study analyzed factors associated with DR complications among type 2 diabetes mellitus (T2DM) patients at Klinik Mata Vision Max. Results: Using a case–control design with 60 participants (30 cases, 30 controls), multivariate logistic regression revealed that uncontrolled blood glucose (OR = 7.5, p = 0.007), diabetes duration >5 years (OR = 6.4, p = 0.016), hypertension (OR = 4.5, p = 0.043), and male sex (OR = 3.97, p = 0.054) significantly increased the risk of DR, while diet showed no direct effect. Novelty: This is the first systematic case–control study in a community-based eye clinic in Indonesia addressing DR risk factors. Implications: Findings highlight the urgency of integrating DR screening into primary care, emphasizing glycemic control, hypertension management, and targeted patient education to reduce preventable blindness.Highlight : Uncontrolled blood glucose is the dominant factor. Age >45 years and DM duration >5 years increase risk. Hypertension is significantly associated with diabetic retinopathy. Keywords : Diabetes Mellitus, Diabetic Retinopathy, Risk Factors, Age, Hypertension
Analysis of the Secondhand Watch Business Process Using Business Process Mapping and a Priority Matrix Dimas Ramadhani Yulianto; Iriani Iriani
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11640

Abstract

General Background: The global secondhand luxury watch market has experienced rapid growth, becoming a crucial segment of the circular economy due to sustainability concerns and investment potential. Specific Background: Despite this potential, many Small and Medium-sized Enterprises (SMEs) in developing countries, such as Indonesia, struggle with informal operational practices, including inconsistent grading, unsystematic sorting, and fragmented inventory systems. Knowledge Gap: Existing studies on business process efficiency have rarely focused on SMEs in the pre-owned luxury watch sector, leaving a gap in structured frameworks tailored to this industry. Aims: This study aimed to design and validate a systematic operational model to enhance efficiency and decision-making in a case study SME, Watchout.id. Results: Using Business Process Mapping, a new workflow was created and complemented by two objective rubrics—an Effort Assessment and an Impact Assessment—integrated into a novel 3x3 Zoned Priority Matrix. This framework was further supported by a prototype inventory dashboard. Validation with the business owner confirmed the framework’s applicability and relevance. Novelty: The research introduces an enhanced decision-making tool beyond the traditional 2x2 matrix, offering more nuanced categorization and resource allocation strategies. Implications: The proposed framework provides a replicable model for SMEs in the secondhand luxury market, enabling more efficient, scalable, and data-driven operations. Highlights: Structured framework improves SME efficiency. 3x3 Priority Matrix enables nuanced decisions. Integrated dashboard enhances inventory visibility. Keywords: Business Process Mapping, Priority Matrix, Secondhand Watches, Operational Efficiency, SMEs
Murabahah Working Capital and Investment Financing in Increasing Business Income: Pembiayaan Modal Kerja dan Investasi Murabahah dalam Meningkatkan Pendapatan Usaha Sri Ayu Fadhilah; Tuti Anggraini; Juliana Nasution
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11641

Abstract

General Background: The Islamic banking industry plays a pivotal role in financial inclusion, particularly for micro, small, and medium enterprises (MSMEs), through Sharia-compliant financing schemes. Specific Background: PT BPRS Puduarta Insani Medan Tembung, as a regional Sharia microfinance institution, actively distributes working capital and investment financing using murabahah contracts. Knowledge Gap: However, empirical studies examining the direct impact of such financing on community business income, especially within localized contexts like Medan Tembung, remain limited. Aims: This study investigates how working capital and investment financing under murabahah contracts affect the business performance of local MSMEs. Results: Findings show a positive correlation between murabahah-based financing and increased business income, improved financial capacity, and enhanced operational performance among recipients. Novelty: The study provides in-depth qualitative evidence on the effective implementation of murabahah bi al-wakalah contracts in grassroots banking operations, emphasizing customer empowerment and Sharia adherence. Implications: These insights support policy and institutional strategies aimed at expanding Sharia-based financial services, reducing poverty, and promoting sustainable regional economic growth through inclusive Islamic finance mechanisms.Highlight : Working capital and investment financing using murabahah contracts significantly increased MSME income in Medan Tembung. PT BPRS Puduarta Insani’s financing strategy aligns with national goals for Islamic banking growth and inclusion. Murabahah bi al-wakalah structure ensures sharia compliance and operational simplicity for both bank and customers. Keywords : Working Capital Financing, Investment Financing, Murabahah Contract, Business Income, Islamic Microfinance
Controlling Raw Material Inventory for Methanol Production Using the Silver Meal Method: Pengendalian Persediaan Bahan Baku Penunjang Methanol Menggunakan Metode Silver Meal Hafidz Raif Harashta; Enny Aryanny
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11651

Abstract

General background: Effective inventory control is essential for manufacturing firms to ensure operational continuity and cost efficiency. Specific background: Methanol production facilities often experience persistent overstock of supporting chemicals such as Caustic Soda Flake (NaOH) and Sulphuric Acid (H₂SO₄), resulting in increased storage costs and heightened safety risks. Knowledge gap: Prior studies predominantly apply the Silver Meal heuristic to primary raw materials, with limited evidence of its effectiveness for fluctuating supporting materials in high-risk chemical industries. Aims: This study aims to optimize supporting-material inventory using the Silver Meal method to reduce total inventory costs and improve ordering policies. Results: The method produced lower total costs—Rp 4.144.915.411 for Caustic Soda and Rp 1.096.242.822 for Sulphuric Acid—representing reductions of 4.6% and 8.5% compared to the existing approach commonly used in industry. Novelty: The study introduces the application of a heuristic lot-sizing method to hazardous supporting materials using actual operational data, demonstrating its feasibility in chemically sensitive environments. Implications: Findings provide a practical decision-support model for companies to minimize overstock, enhance operational efficiency, and mitigate safety hazards associated with chemical accumulation. Highlights: Highlights the efficiency of the Silver Meal method in reducing total inventory costs. Addresses overstock issues of hazardous supporting materials in methanol production. Provides a practical model for safer and more economical inventory management. Keywords: Inventory Control, Silver Meal, Methanol Production, Supporting Materials, Cost Optimization
Tourist Satisfaction Determined by Amenities and Additional Services: Kepuasan Wisatawan Ditentukan oleh Amenitas dan Layanan Tambahan Rabiatul Adawiyah; Kasmita; Yuliarma; Feri Ferdian
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11662

Abstract

General Background: Cultural heritage tourism plays a vital role in supporting local economies and preserving identity, particularly in historically rich areas like Indonesia. Specific Background: The Siak Palace in Riau Province, as a living heritage site from the Malay Kingdom, holds strong potential as a cultural destination but faces challenges in optimizing visitor satisfaction. Knowledge Gap: Previous studies have not simultaneously analyzed the influence of the 4A components (Attraction, Accessibility, Amenities, Ancillary Services) on visitor satisfaction at Malay heritage destinations. Aims: This study investigates the effect of the 4A destination components on tourist satisfaction at the Siak Palace using a quantitative approach. Results: Based on responses from 400 visitors and SmartPLS 4.0 analysis, amenities and ancillary services significantly influenced satisfaction (p < 0.001), while attractions had a smaller positive effect (p = 0.035), and accessibility showed no significant impact (p = 0.408). Novelty: The study applies a robust sample size and advanced SEM-PLS analysis to a culturally specific heritage site, offering empirical insight into underexplored tourism dynamics. Implications: The findings highlight the need to improve facilities and complementary services over transport infrastructure to enhance tourist experiences and sustain heritage-based tourism in Siak.Highlight : This study shows that amenity and ancillary services have the strongest influence on tourist satisfaction at Siak Palace. Accessibility is not significant to satisfaction, indicating that the role of public transportation is not optimal in supporting visits. This study uses a quantitative approach based on SEM-PLS with a large sample (400 respondents), providing strong empirical validity. Keywords : Attraction, Accessibility, Amenities, Ancillary Services, Tourist Satisfaction
Price, Product Quality, and Packaging in Yumsbite Purchase Decisions: Harga, Kualitas Produk, dan Kemasan dalam Keputusan Pembelian Yumsbite Resti Haryati; Fitria Rahmona; Zul Afdal; Abror
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11675

Abstract

General Background: The Indonesian snack food industry continues to grow, with consumer preferences increasingly shaped by product quality and experience. Specific Background: In micro and small enterprises (MSMEs) like Yumsbite Donuts, purchasing decisions are often influenced by price, packaging, and perceived product value. Knowledge Gap: While many studies analyze these variables quantitatively, there is limited literature mapping that visualizes trends, author networks, and research clusters in this field. Aims: This study aims to systematically analyze the influence of price, product quality, and packaging on purchase decisions through a bibliometric approach using VOSviewer. Results: Analysis of 30 selected articles reveals three main research clusters, with product quality and packaging emerging as dominant themes, while price is comparatively less discussed. Novelty: Unlike previous regression-based studies, this research maps the intellectual structure and thematic evolution of the literature, uncovering underexplored areas such as visual branding and consumer perception. Implications: The findings suggest that MSMEs should prioritize product quality and packaging strategies over pricing tactics to enhance consumer purchase decisions, offering a practical reference for marketing development and a foundation for future research directions.Highlight : Product quality and packaging are the most dominant factors influencing purchase decisions. Price is less emphasized in literature compared to quality and packaging. Bibliometric analysis helps identify research clusters and practical strategies for MSMEs. Keywords : Price, Product Quality, Packaging, Purchase Decisions, Snack MSMEs
Marketing Mix Strategy to Increase Competitiveness of Nirwana Beach: Strategi Marketing Mix Untuk Meningkatkan Daya Saing Pantai Nirwana Annisa Fajrianii; Retnaningtyas Susanti; Yasri; Hendri Azwar
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11680

Abstract

General Background: Tourism is a key sector in regional economic development, with beach destinations in Padang contributing significantly to local income. Specific Background: Nirwana Beach, despite its natural beauty and strategic location, lags behind competitors like Air Manis and Carocok due to limited promotion, service quality, and facility development. Knowledge Gap: Previous studies on coastal tourism marketing in Indonesia rarely focus on local destinations using the 7P marketing mix framework. Aims: This study aims to analyze the implementation of the 7P marketing mix (product, price, place, promotion, people, process, physical evidence) to enhance the competitiveness of Nirwana Beach. Results: The study reveals strengths in product and pricing but identifies significant weaknesses in digital promotion, service process, human resources, and physical facilities. Novelty: Methodologically, this research applies thematic analysis with NVivo software, which is rare in coastal tourism studies, and contributes to the adaptation of service quality and destination competitiveness frameworks in local contexts. Implications: Practical recommendations include enhancing digital marketing, improving human resources through training, and integrating services digitally. Theoretically, the study broadens the application of marketing mix theories to small-scale beach destinations, supporting policy and managerial decisions in sustainable tourism development.Highlight : Analysis of the 7P strategy shows that the elements of promotion, human resources, and service processes are still the main weak points of Nirwana Beach. The destination's main strengths lie in its natural beauty and competitive pricing, but the lack of product diversification limits its appeal. Strategy recommendations emphasize the importance of digitizing promotions, HR training, and developing physical facilities to improve competitiveness. Keywords : Marketing Mix, Nirwana Beach, Tourism Strategy, Destination Competitiveness, 7P Model
Comparison of Logistic Regression and Support Vector Machine Algorithm Performance in Heart Failure Prediction: Perbandingan Kinerja Algoritma Logistic Regression dan Support Vector Machine dalam Prediksi Gagal Jantung Afrahul Hidayah Siregar; Saut Dohot Siregar
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11682

Abstract

General Background: Heart failure remains a global health concern due to its high prevalence and mortality rates. Specific Background: In Indonesia, heart disease ranks as a leading cause of death, emphasizing the need for reliable predictive tools. Knowledge Gap: Despite the availability of machine learning algorithms, limited studies provide a comparative evaluation using updated clinical datasets in the Indonesian context. Aims: This study aims to compare the performance of Logistic Regression and Support Vector Machine (SVM) in predicting heart failure. Results: Using a dataset of 918 samples and rigorous preprocessing, SVM achieved 90% accuracy with an AUC of 0.93, outperforming Logistic Regression, which scored 88% accuracy and an AUC of 0.9304. SVM demonstrated superior sensitivity and robustness in handling non-linear data, while Logistic Regression offered better calibration for risk interpretation. Novelty: The study’s novelty lies in its integrated open-source pipeline, use of biomedical signal features, and statistical validation via McNemar’s test. Implications: These findings support the implementation of SVM in automated clinical decision systems for early heart failure detection, while highlighting Logistic Regression's value in interpretability-focused clinical settings.Highlight : SVM has higher accuracy and F1-score, indicating superior classification performance. Logistic Regression remains superior in probability calibration, important for clinical risk interpretation. Both models effectively support the development of machine learning-based health prediction systems. Keywords : Logistic Regression, Support Vector Machine (SVM), Heart Failure, Machine Learning Classification, Prediction Calibration
Price and Quality Drive Purchase Decision via Purchase Interest on Tangkelek: Harga dan Kualitas Mendorong Keputusan Pembelian melalui Minat Beli di Tangkelek Vivi Rizky Aulya; Adhe Okta Shafira; Karmila Fandora; Susi Evanita
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11684

Abstract

General Background: In an era marked by globalized consumerism, local brands have begun to reclaim cultural identity through products that embody regional heritage. Specific Background: Tangkelek, a Minangkabau-based fashion brand in Padang City, integrates cultural values into its offerings, appealing to emotionally and culturally conscious consumers. Knowledge Gap: While extensive studies have examined the role of price and quality in purchasing decisions, few focus on local, culture-based brands in emerging markets. Aims: This study investigates how price and product quality influence purchasing decisions for Tangkelek products, with purchase interest as a mediating factor. Results: Based on SEM-PLS analysis of 90 respondents, both price and product quality significantly influence purchase interest and decision-making. Purchase interest also effectively mediates the relationship between the two predictors and purchasing behavior. Novelty: The study contributes a localized, culturally grounded model of consumer behavior, extending marketing literature by highlighting emotional-cultural value as a competitive edge. Implications: Findings recommend that MSMEs adopt fair pricing and continuous quality improvement, supported by marketing strategies that evoke purchase interest through cultural storytelling and value communication.Highlight : Price and product quality have a significant effect on purchase interest and decisions. Purchase intention is an important mediator between perceived price and quality on purchasing decisions. Local products such as Tangkelek gain traction because they carry regional cultural values. Keywords : Price, Product Quality, Purchase Interest, Purchase Decision, Tangkelek

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