E-Journal UMSIDA (Universitas Muhammadiyah Sidoarjo)
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Optimization of Transfer Learning VGG-16 and ResNet50 for Deep Learning-Based Classification of Edible and Poisonous Mushroom Images: Optimalisasi Transfer Learning VGG-16 dan ResNet50 untuk Klasifikasi Citra Jamur Edible dan Poisonous Berbasis Deep Learning
No full textGeneral Background Accurate identification of edible and poisonous mushrooms is critical for food safety because high visual similarity among species often causes misclassification. Specific Background Deep learning with transfer learning using Convolutional Neural Networks has been widely applied for image-based mushroom classification, particularly through pretrained architectures such as VGG-16 and ResNet50. Knowledge Gap Nevertheless, limited comparative evidence exists regarding which architecture provides more stable and balanced performance when applied to relatively small and diverse mushroom image datasets. Aims This study compares VGG-16 and ResNet50 transfer learning models for binary mushroom toxicity classification using the Kaggle Edible and Poisonous Mushroom Images dataset consisting of 2,820 images from 47 species. Results Using a 70:15:15 training, validation, and testing split with standardized preprocessing and data augmentation, the fine-tuned VGG-16 model achieved 96% test accuracy with a loss of 0.1671, while the ResNet50 model reached 92% accuracy with a loss of 0.2991. Both models obtained a ROC AUC value of 1.000, although VGG-16 demonstrated more balanced precision, recall, and F1-scores across classes. Novelty This research presents a direct and systematic comparison of two widely used pretrained CNN architectures under identical experimental settings. Implications The findings support automated mushroom toxicity identification to assist safer mushroom consumption decisions.
Highlights:
The strongest model achieved 96% accuracy with lower classification loss.
The alternative model produced lower accuracy under identical conditions.
Both approaches reached perfect ROC AUC with differing class balance.
Keywords: Deep Learning, Convolutional Neural Network (CNN), VGG-16, ReNet50, Mushroom Image Classificatio
Regional Head Policy Implementation for Batik Artisan Economic Empowerment: Kepala Wilayah Pelaksanaan Kebijakan untuk Pemberdayaan Ekonomi Pengrajin Batik
No full textGeneral Background: The batik industry is a major creative economy subsector that supports cultural preservation and local economic development, yet it faces constraints related to policy limitations, technological innovation, and market expansion. Specific Background: This study examines the implementation outcomes of regional head policies for batik industry advancement as a strategy for empowering artisans in Sleman Regency. Knowledge Gap: Prior batik-related studies commonly rely on descriptive or regression approaches, providing limited insight into complex interdependence among variables linking policy, implementation, and empowerment. Aims: Using MICMAC (Matrice d’Impacts Croisés Multiplication Application à un Classement), this study identifies the variables shaping the implementation of regional head policies in the batik industry system. Results: MICMAC mapping shows the Regional Head Policy (KKD) as the main driving variable with the strongest direct and indirect relations, while product and process innovation, market access and promotion, and artisans’ welfare emerge as strongly dependent variables; empirically, clearer innovation-oriented directives, bureaucratic simplification, and human resource quality are central to interpreting the policy’s operational meaning. Novelty: The study contributes a MICMAC-based structural mapping of complex influence–dependence relations in regional head policy implementation for batik industry governance in Sleman. Implications: The findings support policy recommendations focused on aligning regulations with technological innovation, facilitating market access expansion, and sustaining artisans’ economic livelihoods within the creative economy ecosystem.
Highlight:
MICMAC positioning ranks KKD as the primary pushing variable in the system.
Product–process innovation, market access–promotion, and artisan welfare appear as strongly dependent variables.
Clear innovation-oriented directives, streamlined bureaucracy, and higher human resource quality characterize the implementation pathway identified in the analysis.
Keywords: Regional Head Policy, MICMAC Analysis, Batik Industry, Economic Empowerment, Market Acces
Legal Weaknesses in Enforcing Good Governance Principles in Licensing Corruption: Kelemahan Penegakan Hukum Asas Pemerintahan yang Baik dalam Korupsi Perizinan
No full textGeneral Background: The General Principles of Good Governance constitute fundamental norms in state administrative law that guide the legality of governmental actions. Specific Background: In Indonesia’s licensing administration, these principles are formally regulated to ensure legal certainty, transparency, accountability, and public interest, yet licensing practices frequently deviate through abuse of authority and corruption cases. Knowledge Gap: Existing enforcement mechanisms tend to prioritize criminal prosecution without first addressing administrative violations, resulting in weak integration between administrative law and criminal law. Aims: This study aims to analyze juridically the enforcement of Good Governance Principles in licensing corruption cases and to clarify the proper qualification of such violations within the administrative law framework. Results: The findings demonstrate that violations of Good Governance Principles in licensing constitute abuse of authority that should be initially addressed as administrative violations before criminal proceedings, in order to ensure legal coherence. Novelty: This study emphasizes the juridical positioning of administrative sanctions as a preliminary mechanism prior to criminal liability in licensing corruption cases. Implications: Strengthening regulations, internal supervision by governmental auditors, the role of the Ombudsman, and licensing digitalization is essential to support transparent, accountable, and clean governance based on administrative law principles.
Highlights
• Licensing corruption reflects systemic violations of good governance principles through abuse of administrative authority• Administrative accountability remains weak due to limited integration between administrative and criminal legal frameworks• Strengthening supervisory institutions and digital licensing systems is central to clean and accountable governance
Keywords
General Principles Of Good Governance; Abuse Of Authority; Licensing Corruption; State Administrative Law; Administrative Enforcemen
Independent Majelis Disiplin Profesi Ensures Legal Certainty in Health Law: Majelis Disiplin Profesi yang Independen Menjamin Kepastian Hukum dalam Hukum Kesehatan
No full textGeneral Background: Indonesia’s health legal system has introduced a dedicated professional discipline mechanism through the Majelis Disiplin Profesi (MDP) under Law Number 17 of 2023 on Health. Specific Background: Articles 304–309 position MDP as the initial forum to examine alleged breaches of medical and health professional discipline prior to criminal investigation, reflecting a quasi-judicial role within health governance. Knowledge Gap: The statutory design raises unresolved concerns regarding guarantees of institutional autonomy and protection from executive intervention, despite the direct significance of MDP recommendations for subsequent criminal and civil processes. Aims: This study articulates the urgency of structural independence for MDP by mapping its juridical position, independence dimensions (institutional, functional, and administrative), and normative risks within the lex specialis framework for medical disputes. Results: The analysis identifies that insufficient independence may generate legal uncertainty, weaken objectivity of recommendations, and risk constraining constitutional access to justice, including tensions with equality before the law, while also creating overlap risks with the general judiciary if recommendations are treated as an absolute procedural prerequisite. Novelty: The article synthesizes MDP’s quasi-judicial character with a three-dimensional independence model to assess the feasibility of lex specialis discipline mechanisms under the 2023 Health Law. Implications: Strengthening MDP’s institutional design and ensuring transparent examination procedures are positioned as priority measures to sustain professional accountability, balanced protection for patients and health workers, and public trust in disciplinary adjudication.
Highlights:
The disciplinary mechanism is placed as the initial examination stage before investigative procedures begin.
Autonomy deficits are linked to risks of non-objective recommendations and constrained access to justice.
Treating council recommendations as an absolute procedural gate may create overlap with general adjudication.
Keywords:Professional Discipline Council, Health Law 2023, Institutional Independence, Quasi-Judicial Body, Lex Speciali
Human Resource Development Patterns in Sidoarjo Based on Demography and Employment: Pola Pengembangan Sumber Daya Manusia di Sidoarjo Berdasarkan Demografi dan Ketenagakerjaan
No full textGeneral Background: Human resource development is a strategic prerequisite for sustainable regional development, particularly in areas experiencing dynamic demographic change. Specific Background: Sidoarjo Regency represents an economically active region in East Java with a large productive-age population, a labor market dominated by manufacturing and services, and evolving household consumption patterns. Knowledge Gap: Existing regional studies rarely integrate demographic structure, employment characteristics, skill alignment, and economic capacity within the Workforce Development Theory framework at the local level. Aims: This study analyzes human resource development in Sidoarjo Regency through demographic conditions and employment potential using a qualitative descriptive approach. Results: The findings reveal a high labor force participation rate with dominance of senior high school graduates absorbed mainly in service and manufacturing sectors, alongside persistent open unemployment and skill mismatch, particularly among secondary and higher education graduates. Economic support is characterized by concentrated MSME credit in manufacturing and increasingly modern consumption patterns, yet accompanied by welfare disparities. Novelty: This study provides an integrated regional analysis linking labor structure, participation, competency alignment, and household economic capacity within a workforce development perspective. Implications: The results indicate the need for integrated human resource development policies that align education and training with labor market demand while addressing economic inequality to support sustainable regional workforce development.
Highlights:
Labor participation remains high but is accompanied by persistent open unemployment and competency mismatch.
Manufacturing and service sectors dominate job absorption alongside concentrated MSME financing.
Rising household consumption reflects economic growth alongside continuing welfare disparities.
Keywords: Human Resource Development, Employment, Demograph
Implementing Job Safety Analysis to Analyze Hazard Risk Factors for Paper Core Workers
No full textGeneral Background: Occupational safety and health remain critical concerns in industrial manufacturing due to persistent exposure to physical, chemical, and ergonomic hazards. Specific Background: Paper core manufacturing involves high-speed machinery, heavy material handling, elevated temperatures, and continuous noise, which collectively pose risks for work-related diseases. Knowledge Gap: Despite routine production activities, systematic identification and prioritization of occupational health risks in paper core factories using structured analytical methods remain limited. Aims: This study aimed to identify and assess occupational safety and health hazards among paper core workers using the Job Safety Analysis approach. Results: The analysis identified noise and high temperature exposure as high-risk hazards, particularly associated with winding, cutting, trimming, and seamless processes, with hypertension emerging as a prominent occupational health risk among workers exposed for eight-hour shifts. Other hazards, including dust exposure, ergonomic strain, and chemical contact, were categorized as medium to low risk. Novelty: This study provides a comprehensive, process-based hazard mapping of paper core manufacturing activities using Job Safety Analysis, explicitly linking high-risk operational stages with hypertension risk classification. Implications: The findings support the need for structured risk assessments, environmental controls, ergonomic interventions, and continuous health monitoring to manage occupational health risks and support worker safety and productivity in paper core manufacturing facilities.
Highlights:
High-temperature and acoustic conditions were classified as dominant high-risk hazards across multiple production stages.
Cardiovascular conditions were identified among workers subjected to prolonged industrial exposure.
Structured hazard mapping enabled prioritization of preventive workplace controls.
Keywords: Job Safety Analysis, Ergonomics, Health, Safet
YouTube Da’wah Viewing and Student Religious Commitment: Menonton Dakwah YouTube dan Komitmen Beragama Mahasiswa
No full textGeneral Background: The rapid expansion of digital media has transformed religious communication, positioning YouTube as a prominent platform for Islamic da’wah among university students. Specific Background: Within Islamic higher education, students increasingly access da’wah videos that combine visual, auditory, and spiritual messages aligned with contemporary digital lifestyles. Knowledge Gap: Despite growing digital da’wah consumption, empirical studies specifically examining YouTube viewing intensity in relation to religious commitment among Islamic university students remain limited. Aims: This study aims to examine the relationship between watching Islamic da’wah videos on YouTube and religious commitment among students of UIN Alauddin Makassar. Results: Using a quantitative survey approach and simple linear regression analysis, the findings demonstrate a positive and statistically significant relationship between the intensity of watching da’wah videos and students’ religious commitment, with a moderate correlation level. Novelty: The study strengthens empirical evidence on digital da’wah by focusing on viewing intensity as a measurable variable linked to religious commitment within the context of Islamic higher education in Indonesia. Implications: These findings underline the strategic role of YouTube as a contemporary da’wah medium supporting students’ religious awareness, consistency, and practice, while also providing a reference for future digital da’wah development in Islamic universities.
Highlights
• Higher da’wah video viewing intensity corresponds with stronger student religious commitment• YouTube functions as an active medium for fulfilling students’ spiritual needs• Digital da’wah aligns with communication theories emphasizing active media use
Keywords
YouTube; Digital Da’wah; Religious Commitment; Islamic Students; Viewing Intensit
Analysis of the Role of Hedonic Shopping Motivation, Shopping Lifestyle, and Positive Emotion on Impulse Buying: Analisis Peran Motivasi Belanja Hedonis, Gaya Hidup Belanja, dan Emosi Positif terhadap Pembelian Impulsif
No full textGeneral Background The expansion of popular culture and digitalization has reshaped contemporary consumption patterns, particularly among young consumers who increasingly engage in unplanned purchasing of musician merchandise. Specific Background Within Indonesian music fan communities, official merchandise functions not only as a product but also as a medium of emotional attachment and identity expression, as observed in the Team Hindia Surabaya community. Knowledge Gap Despite growing impulse buying tendencies in music fandoms, limited empirical evidence addresses the internal psychological and lifestyle factors underlying this behavior in Indonesian indie music communities. Aims This study aims to examine the roles of hedonic shopping motivation, shopping lifestyle, and positive emotion in impulse buying of Band Hindia merchandise among Team Hindia Surabaya members. Results Using a quantitative explanatory approach with Partial Least Squares analysis on 285 respondents, the findings show that all three variables are positively and significantly associated with impulse buying, with hedonic shopping motivation demonstrating the strongest contribution. Novelty This research provides context-specific evidence from an Indonesian indie music fan community, extending impulse buying literature beyond general e-commerce settings. Implications The results highlight the importance of emotional experience and shopping-oriented lifestyles in understanding spontaneous merchandise purchasing, offering relevant insights for cultural merchandise marketing and consumer behavior research within fandom-based communities.
Highlights:
Emotional pleasure during purchasing shows the strongest association with spontaneous buying behavior.
Trend-oriented and habitual purchasing patterns are linked to unplanned merchandise acquisition.
Pleasant emotional states during shopping coincide with higher tendencies toward spontaneous purchases.
Keywords: Hedonic Shopping Motivation, Shopping Lifestyle, Positive Emotion, Impulse Buyin
Audit Findings, Follow-Up, and Financial Reporting Quality Fail to Reduce Corruption
No full textGeneral Background Corruption in public sector institutions remains a persistent governance challenge in Indonesia despite extensive external audit mechanisms. Specific Background The Supreme Audit Agency conducts audits of ministries and institutions, producing audit findings and follow-up recommendations intended to strengthen accountability and transparency through financial reporting. Knowledge Gap Prior empirical studies report inconsistent evidence on whether audit findings and follow-up actions are associated with corruption, particularly when financial reporting quality is positioned as a mediating mechanism. Aims This study examines the direct and indirect relationships between audit findings, follow-up on audit results, and corruption, with financial reporting quality as an intervening variable, within the framework of agency theory. Results Using panel data from 132 ministry and institutional observations during 2021–2023, the findings show that audit findings are negatively associated with financial reporting quality, while audit follow-up is positively associated with financial reporting quality. However, audit findings, audit follow-up, and financial reporting quality show no significant direct relationship with corruption, and financial reporting quality does not mediate these relationships. Novelty This study provides rare empirical evidence that financial reporting quality does not transmit the role of audit mechanisms into corruption control within Indonesian ministries and institutions. Implications The results indicate that audit processes and reporting improvements primarily function as administrative accountability tools and are insufficient as standalone instruments for addressing corruption in the public sector.
Highlights:
Audit observations are associated with lower standards of governmental financial statements.
Recommendation completion is linked to improved compliance with accounting standards.
Reporting mechanisms do not explain variations in misconduct cases across institutions.
Keywords: Audit Findings, Follow-Up, Quality of Financial Statement
Structural, Optical, and Morphological Evaluation of Ag-Doped ZnO/CuO/Porous Silicon Heterojunctions for Optoelectronic Applications: Evaluasi Struktur, Optik, dan Morfologi Heterojunctions ZnO/CuO/Silikon Porous yang Doping Ag untuk Aplikasi Optoelektronik
No full textGeneral Background Renewable energy technologies increasingly rely on advanced heterojunction architectures to improve light harvesting and charge transport in optoelectronic devices. Specific Background Multilayer systems combining ZnO, CuO, and porous silicon offer complementary electronic and optical properties, while plasmonic silver incorporation provides additional light–matter interaction pathways. Knowledge Gap However, a systematic experimental correlation between Ag doping concentration, nanostructural evolution, optical behavior, and photovoltaic response in ZnO/CuO/PSi heterojunctions remains insufficiently explored. Aims This study aims to fabricate and evaluate Ag-doped ZnO/CuO/porous silicon heterojunction devices and to examine the role of silver concentration on structural, optical, and electrical characteristics. Results Structural and morphological analyses reveal refined crystallite sizes and pronounced morphology evolution with increasing Ag content, accompanied by enhanced visible-light absorption and bandgap reduction to 2.78 eV at 7% Ag doping. Photovoltaic measurements demonstrate a maximum open-circuit voltage of 3300 mV, a fill factor of 45.09%, and a power conversion efficiency of 0.3125% for the optimized device. Novelty The work provides an integrated experimental assessment linking plasmonic Ag doping to interface engineering and device-level performance within a single heterojunction framework. Implications These findings offer practical guidance for designing cost-effective optoelectronic devices and advancing plasmonic-assisted multilayer solar cell architectures.
Keywords: Ag-doped ZnO, CuO Heterojunction, Porous Silicon, Plasmonic Nanoparticles, Photovoltaic Devices
Key Findings Highlights:
Progressive silver incorporation induces significant morphological and crystallographic modification in multilayer structures.
Visible-light absorption increases markedly due to combined plasmonic and bandgap engineering mechanisms.
Optimized heterojunction configuration exhibits superior voltage output and charge collection behavior