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Widiyanto, Wahyu Wijaya

Politeknik Indonusa Surakarta

Author-ID : 1231742

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Comparative Analysis of RGB and Grayscale Pixel-Based Similarity Methods for Lung X-ray Image Retrieval in Clinical Decision Support Systems Widiyanto, Wahyu Wijaya; Nizam Husen, Mohd; Pariyasto, Sofyan; Susanto, Edy
Jurnal Teknik Informatika (Jutif) Vol. 6 No. 6 (2025): JUTIF Volume 6, Number 6, Desember 2025
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2025.6.6.5570

Chest X-ray imaging is widely used to support the diagnosis of lung diseases, yet many automated similarity techniques still rely on RGB formats, which differ from the grayscale images commonly used in clinical systems. This discrepancy raises the question of whether color information is necessary for effective similarity assessment. This study aims to evaluate the performance of RGB and grayscale pixel-based similarity methods for lung X-ray analysis and determine whether grayscale images can provide comparable similarity performance with lower computational demands. A total of 300 chest X-ray images representing normal, pneumonia, and COVID-19 categories were processed in both formats. Pixel-level similarity was calculated across 30,000 image pairings, followed by statistical testing to assess differences between methods. The results show that grayscale similarity scores closely match those of RGB, with variations generally below 0.3%. A meaningful difference was observed only in the comparison between normal and COVID-19 images, indicating that RGB may capture subtle visual variations not present in grayscale. Overall, this study demonstrates that grayscale pixel-based similarity analysis provides a reliable and computationally efficient approach, contributing to the development of lightweight medical image retrieval and clinical decision support systems in the field of health informatics.

Implementation Analysis of Electronic Medical Records in Outpatient Services: Insights from 5M Perspective at Nur Hidayah Hospital Vivi Rahmawati; Wahyu Wijaya Widiyanto
Green Health International Journal of Health Sciences Nursing and Nutrition Vol. 2 No. 3 (2025): July : Green Health: International Journal of Health Sciences, Nursing and Nutr
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70062/greenhealth.v2i3.189

Electronic Medical Records (EMR) are essential for improving the quality, efficiency, and continuity of healthcare services. Despite mandates requiring full implementation of EMRs in Indonesian healthcare facilities by the end of 2023, many hospitals continue to face challenges in achieving effective adoption. This study aims to analyze the implementation of EMRs in the outpatient services of Nur Hidayah Hospital, Yogyakarta, using the 5M framework: Man, Money, Machine, Materials, and Method. Employing a qualitative descriptive approach, data were collected through in-depth interviews, observations, and document analysis involving key informants from medical records staff, registration officers, and IT personnel. The findings revealed that while the availability of staff and supporting infrastructure such as computers and software was generally adequate, limitations persisted in human resource specialization, training access, and system integration. Financial planning for EMR-related needs was done through annual budgeting (RAB), but coordination between departments remained minimal. Key challenges included slow internet connectivity, limited IT staff, and lack of specific Standard Operating Procedures (SOPs) for EMR usage. Overall, the EMR system has been implemented in most outpatient units, yet not all units have fully transitioned due to technical and organizational barriers. This study concludes that optimizing EMR implementation requires not only technological readiness but also organizational alignment, continuous staff development, and robust inter-departmental coordination.

Transformasi Digitalilasi Posyandu: Mobile Apps Posyandu Menggunakan Glide Apps Wahyu Wijaya Widiyanto; Irmawati Mathar; Wahyu Ratri Sukmaningsih
Indonesian Journal of Health Information Management Vol. 3 No. 1 (2023)
Publisher : Sekolah Tinggi Ilmu Kesehatan Mitra Husada Karanganyar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54877/ijhim.v3i1.95

Posyandu adalah suatu Upaya Kesehatan Bersumberdaya Masyarakat (UKBM) dimana pelayanannya dilaksanakan dari, oleh, dan untuk masyarakat. Posyandu Mawar I Plombon Mojolaban, tertelak di Desa Plumbon, RT 03 RW 10 Mojolaban, Sukoharjo. Posyandu Mawar I Plumbon Mojolaban memiliki 7 kader yang mengurus jalannya kegiatan posyandu. Posyandu Mawar 1 Plumbon Mojolaban merupakan Posyandu khusus balita, selama ini pencatatan dan pelaporan Posyandu masih dilakukan secara manual dengan menggunakan lembar formulir yang diberikan oleh bidan desa. Proses pencatatan dan pengolahan data masih dilakukan secara manual menggunakan tulisan tangan sehingga berisiko adanya salah tulis, mudah sobek, dan kurang jelas tulisannya. Tujuan penelitian ini adalah untuk menganalisis sistem pencatatan dan pelaporan yang digunakan di Posyandu Mawar I Plumbon Mojolaban dan membuat perancangan sistem informasi pencatatan yang dibutuhkan di Posyandu Mawar I Plumbon Mojolaban. Jenis penelitian ini merupakan penelitian kualitatif menggunakan metode System Development Life Cycle (SDLC) dengan model Waterfall. Informan dalam penelitian ini adalah kader Posyandu Mawar I Plumbon, Mojolaban. Hasil penelitian ini berupa aplikasi pencatatan data balita yang dibuat menggunakan Glide Apps dengan uji black box secara fungsional sukses.

Determinants of Outpatient Satisfaction Based on Health Service Quality Dimensions in Primary Health Care Wahyu Ratri Sukmaningsih; Wahyu Wijaya Widiyanto; Meldha Ayu Subekti; Joaquim Gregório de Carvalho
Jurnal Infokes Vol 16 No 1 (2026): Jurnal Ilmiah Rekam Medis dan Informatika Kesehatan
Publisher : Universitas Duta Bangsa Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47701/bmrw4f15

Primary health care performance is closely linked to patient satisfaction, which reflects the extent to which services meet patient expectations. This study aimed to identify the determinants of outpatient satisfaction based on health service quality dimensions at Puskesmas Simo, Boyolali. A cross-sectional analytical observational design was applied involving 100 outpatient respondents selected through convenience sampling. Data were collected using a validated and reliable structured questionnaire and analyzed using univariate, bivariate, and multivariate logistic regression methods. Results showed that the majority of respondents rated service quality positively across all SERVQUAL dimensions, with 90% reporting satisfaction. Multivariate analysis revealed that four dimensions of reliability (OR = 6,08), responsiveness (OR = 4,20), assurance (OR = 2,66), and empathy (OR = 5,09) significantly influenced outpatient satisfaction (p < 0,05), whereas tangibles did not (p = 0,220). Reliability was the strongest determinant, indicating that patients perceiving consistent, timely, and accurate services were more than six times likely to report satisfaction. These findings highlight that non-physical aspects of service quality, including interpersonal interactions and service process effectiveness, are more decisive than physical infrastructure in determining patient satisfaction. Strengthening staff competencies, ensuring standardized procedures, and promoting patient-centered care are recommended to enhance service quality in primary health care.

DEVELOPMENT AND EVALUATION OF A MEDICAL RECORD ED- UCATION SYSTEM USING THE WATERFALL MODEL WITH ISO 9126/25010 QUALITY MAPPING Wahyu Wijaya Widiyanto; Yayak Kartika Sari; Edy Susanto
JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) Vol 10, No 4 (2025)
Publisher : STKIP PGRI Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/jipi.v10i4.9167

This study aims to develop and evaluate a Medical Record Education System designed to enhance students’ digital competence in managing electronic medical records (EMRs). Addressing the gap between the- oretical learning and practical application in health informatics educa- tion, the system was developed using the Waterfall model and evaluated through the ISO 9126 software quality framework. A Research and De- velopment (RD) approach was applied at Politeknik Indonusa Surakarta involving 30 final-year students of the Health Information Management program. Data collection included observation, ISO 9126-based ques- tionnaires, and in-depth interviews, analyzed using descriptive and the- matic techniques. The results showed significant improvement in student performance, with pretest–posttest scores increasing from 64.5 to 86.2 after a two-week system trial. The system comprises interactive modules such as patient data entry, diagnosis coding, and auto-report generation. Expert evaluation produced high scores for usability (4.6), functionality (4.4), reliability (4.2), and efficiency (4.3), confirming both educational value and technical feasibility. These findings highlight the role of struc- tured development and quality assessment models in instructional in- novation. The system not only improves learning outcomes but also provides a replicable model for embedding digital transformation into vocational healthcare education.

Service Quality of Electronic Medical Records Using DeLone–McLean Model Grafirat Wengkang; Wahyu Wijaya Widiyanto
Jurnal Infokes Vol 16 No 2 (2026): Jurnal Ilmiah Rekam Medis dan Informatika Kesehatan
Publisher : Universitas Duta Bangsa Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47701/mas4ck16

Background: Indonesia requires healthcare facilities to implement electronic medical records (EMRs), yet integration progress and implementation capacity remain uneven. Evidence from primary healthcare is especially limited because most evaluations have been undertaken in hospitals. This study examined whether system quality, information quality, service quality, and user satisfaction were associated with perceived health service quality among users of the EMR at Opi Palembang Primary Health Center using an adapted DeLone-McLean Information Systems Success Model. Methods: A quantitative cross-sectional study involved all 52 eligible healthcare professionals and administrative staff who had used the EMR for at least three months. Data were collected using a structured five-point Likert questionnaire. Descriptive statistics, Pearson correlations, and multiple linear regression were used to examine the relationships between the four information-system success dimensions and perceived health service quality. Results: All four dimensions were positively correlated with perceived health service quality: user satisfaction (r=0.65, p<0.001), system quality (r=0.62, p<0.001), information quality (r=0.58, p=0.001), and service quality (r=0.49, p=0.003). The regression model explained 68% of the observed variance (R²=0.68). User satisfaction had the largest observed unstandardized coefficient (B=0.287, p=0.002), followed by system quality, information quality, and service quality. Conclusion: The adapted DeLone-McLean dimensions were consistently associated with users’ perceptions of service quality. The results support improvements in usability, information accuracy and timeliness, technical support, and workflow fit. Because the design was cross-sectional and based on perceptions from one facility, the findings should not be interpreted as evidence that the EMR caused objective improvements in care

Hilirisasi Teknologi Pirolisis Tabung Bertingkat (PITARA) Ver. 2 melalui Living Laboratory untuk Pengelolaan Sampah Plastik di TPS3R Pulau Derawan Arif Surono; Wahyu Wijaya Widiyanto; Tri Martini Patria; Turnad Lenggo Ginta; Aris Mukimin
Cakrawala: Jurnal Pengabdian Masyarakat Global Vol. 5 No. 3 (2026): Agustus: Cakrawala: Jurnal Pengabdian Masyarakat Global
Publisher : Universitas 45 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30640/cakrawala.v5i3.7744

Plastic waste management is a persistent challenge in small-island tourism destinations, where residual plastics have limited recycling value and transport options. This community service program implemented PITARA (Pirolisis Tabung Bertingkat) Version 2 at TPS3R Pulau Derawan through a Living Laboratory approach on 20-24 July 2026. Activities comprised stakeholder coordination, site and feedstock preparation, technology deployment, Training of Trainers (ToT), assisted operation, and initial evaluation. Ten TPS3R operators received training and technical assistance, while residents participated in feedstock collection and technology operation. Two BRIN laboratory reports generated before the Derawan deployment were used only as supporting Baseline characterization. For three plastic-derived samples, cetane index ranged from 43.66-72.17, density 773.9-793.8 kg/m3, viscosity 1.048-2.157 mm2/s, sulfur 22.6-57.7 ppm, flash point 20.05-37.5 degC, water 121.08-144.81 ppm, and acid number 0.20-0.89 mg KOH/g. The program demonstrates a socio-technical pathway for transferring plastic-waste conversion technology to an island community. Wider replication requires traceable batch logs, competency assessment, safety controls, product upgrading, and field-based performance validation.

ANALISIS IMPLEMENTASI E-PUSKESMAS PADA PELAYANAN RAWAT JALAN DI PUSKESMAS BANYUDONO II DENGAN MENGGUNAKAN METODE PIECES Meiliana Dwi Puspita; Wahyu Wijaya Widiyanto; Sri Suparti
Indonesian Journal of Health Research Innovation Vol. 3 No. 3 (2026): Indonesian Journal of Health Research Innovation
Publisher : Yayasan Menawan Cerdas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64094/19xqr328

Implementasi e-Puskesmas merupakan upaya dalam digitalisasi layanan primer kesehatan yang bertujuan untuk meningkatkan efektivitas, efisiensi serta kualitas pelayanan kesehatan di tingkat pertama. Puskesmas Banyudono II mulai menerapkan e-Puskesmas sejak Desember tahun 2024 sebagai pengganti Sistem Informasi Manajemen Puskesmas (SIMPUS). Namun demikian, penerapannya masih ditemukan beberapa kendala seperti gangguan pada jaringan internet serta gangguan bridging BPJS yang menyebabkan terhambatnya proses pelayanan pasien. Penelituan ini bertujuan untuk menganalisis implementasi e-Puskesmas pada pelayanan rawat jalan di Puskesmas Banyudono II berdasarkan aspek Performance, Information, Economy, Control & Security, Efficiency, dan Service (PIECES). Penelituan menggunakan metode deskriptif dengan pendekatan kualitatif dengan pengumpulan data dilakukan melalui tahap wawancara mendalam kepada delapan informan dan observasi secara langsung dengan teknik pengambilan sampel Purposive sampling. Analisis data dilakukan melalui pengumpulan data, reduksi data, triangulasi sumber,penyajian data dan penarikan kesimpulan. Hasil Penelituan menunjukkan bahwa implementasi e-Puskesmas sudah berjalan dengan baik pada aspek Information, Economy, Control & Security, Efficiency, Service, sistem e-Puskesmas mampu dalam membantu pengelolaan data pasien, mengurangi penggunaan kertas, serta mendukung kualitas pelayanan. Pada aspek Performance sistem masih ditemukan gangguan jaringan internet yang menyebabkan proses pelayanan menjadi kurang optimal. Namun, masih diperlukan perbaikan pada stabilitas jaringan internet agar pelayanan tidak terhambat.

HUBUNGAN STRUKTUR DAN PROSES PELAYANAN DENGAN KEPUASAN PASIEN PADA IMPLEMENTASI KELAS RAWAT INAP STANDAR DI RSUP SURAKARTA Siti Oktavia Nur Romadhoni; Resia Perwirani; Wahyu Wijaya Widiyanto
Indonesian Journal of Health Research Innovation Vol. 3 No. 3 (2026): Indonesian Journal of Health Research Innovation
Publisher : Yayasan Menawan Cerdas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64094/htbd8847

Kelas Rawat Inap Standar (KRIS) menetapkan standar minimum ruang rawat inap bagi peserta Jaminan Kesehatan Nasional. Kepuasan pasien dapat berkaitan dengan struktur fisik dan proses pelayanan. Penelitian ini menganalisis hubungan struktur pelayanan dan proses pelayanan dengan kepuasan pasien pada implementasi KRIS di RSUP Surakarta. Penelitian kuantitatif analitik ini menggunakan desain potong lintang. Pengumpulan data dilakukan pada Januari-Mei 2026 di bangsal Nakula 2, Sadewa 1, Sadewa 2, dan Sembadra. Sebanyak 100 pasien rawat inap direkrut menggunakan non-probability accidental sampling. Struktur pelayanan dinilai melalui observasi terhadap 30 ruang rawat inap menggunakan 12 kriteria KRIS; proses pelayanan dan kepuasan pasien diukur menggunakan kuesioner. Data dianalisis secara deskriptif dan menggunakan korelasi Spearman pada alpha=0,05. Rerata skor struktur pelayanan, proses pelayanan, dan kepuasan pasien masing-masing sebesar 27,97; 112,29; dan 107,96. Struktur pelayanan tidak berkorelasi secara signifikan dengan kepuasan pasien (rho=-0,064; p=0,526). Proses pelayanan berkorelasi positif sangat kuat dengan kepuasan pasien (rho=0,885; p<0,001). Struktur pelayanan tidak berkorelasi secara statistik dengan kepuasan pasien, sedangkan persepsi proses pelayanan yang lebih baik berkorelasi kuat dengan kepuasan yang lebih tinggi. Karena desain penelitian bersifat potong lintang, temuan menunjukkan hubungan dan tidak dapat ditafsirkan sebagai sebab-akibat.

Development and Evaluation of an Authentication-Based Access Control Framework for Secure Web-Based Ebook Distribution Lingga Kurnia Ramadhani; Bajeng Nurul Widyaningrum; Wahyu Wijaya Widiyanto
Jurnal Inotera Vol. 11 No. 2 (2026): July - December 2026
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol11.Iss2.2026.ID714

The increasing use of digital learning resources has created a growing demand for secure ebook distribution systems. However, many existing ebook platforms remain vulnerable to unauthorized access, credential sharing, and uncontrolled digital content distribution. This study proposes an Authentication-Based Access Control Framework for secure web-based ebook distribution by integrating authentication, role-based authorization, session management, transaction validation, and ebook access protection within a unified security architecture.The research employed the Waterfall software development model consisting of requirement analysis, system design, implementation, testing, and deployment. The proposed framework was implemented using PHP and MySQL and evaluated through functional and security testing.The implementation results demonstrate that the developed system successfully manages 153 registered users, 151 ebook transactions, and six published ebook collections while maintaining controlled access to digital content. Functional testing achieved a 100% success rate across authentication, authorization, session validation, and ebook protection scenarios. The session management mechanism effectively prevented concurrent account usage and unauthorized access attempts.The novelty of this study lies in the integration of authentication, authorization, session validation, and ebook access protection within a dedicated framework specifically designed for ebook distribution. The proposed framework provides a practical, scalable, and cost-effective alternative for educational institutions and digital content providers seeking secure digital resource distribution without relying on complex Digital Rights Management (DRM) infrastructures.

Co-Authors Ade Amallia Adnan Syarif Mustaqim Adriana Putri Lestari Agustyarum Pradiska Budi Agustyarum Pradiska Budi Ahmad Sunandar Ainurrizah Ainurrizah Amelia Fitriasari Andrianto Afandi Anggie Isnaini, Sintiya Anggraini, Novia Safitri Ani Dwi Andriyani Anita Marsyahada Annisa Ramadhan Annisaa Miftakhul Jannah Aprilia Trisiya Dewi Aries Widiyoko Aries Widiyoko Aries Widiyoko Widiyoko Arif Surono Arif Surono Arifah Damayanti Arifah Damayanti Arini Vika Sari Aris Mukimin Artika Fristi Firnawati Arum Astika Sari Arumawati, Arachis Aryawan Eka Syahputra Aryawan Eka Syahputra Astri Sri Wariyanti Bajeng Nurul Widyaningrum Budi, Agustyarum Pradiska Budiantono, Budiantono Canggih Ajika Pamungkas Dhimas Permana Putra Dimas Luthfi Pambudi Diva Adinia Cipta DWI ISKANDAR edy susanto Edy Susanto Eka Saputri, Yunitya Eko Purwanto Elok Rizma Hapsari Endah Retnani Wismaningsih Erma Pradnyani, Putu Eva Firdayanti Bisono Fendy Prasetyo Nugroho Fitria Rohmatun W Fransiska Defriani Nahu Pandur Frestiany Regina Putri Galuh Nugrahaning Budi, Galuh Gede Wirabuana Putra Grafirat Wengkang Habibi, Musta’inul Hanif Al Fatta Hasna Khoirunnisa Putri Helnindys Guswin, Instreet Hidayat, Andra Dwitama Igiany , Prita Devy Igiany, Prita Devy Inka Sasti Isnaeni, Dwi Retno Joaquim Gregorio de Carvalho Joko Mulyono Krisnita Dwi Jayanti Kurniawati, Novi Ika Kusrini Kusumawati, Pingki Dwi Lestari, Dewi Amelia Licia, Rizka Lidia Putri Fitriana Lingga Kurnia Ramadhani Malchiana Desmitha Sari Marjono Marjono Markus Utomo Sukendar Mathar, Irmawati Meiliana Dwi Puspita Meldha Ayu Subekti Mochammad Arief Darmawan Moh Arif Yunianto Muhammad Fajrian Noor Muji Rahayu Muji Rahayu Muqorobin - Muqorobin Muqorobin Muqorobin Muqorobin Nia Kurniati Nila Erlinawati Nizam Husen, Mohd Novratilova, Sinta Nugroho, Suryanto nur adi satriyo pradista Nurhadi Nurhadi Nurnanik, Iis Oda Jeki Pangesti Pamungkas, Canggih Ajika Pariyasto, Sofyan Pradiska Budi, Agustyarum Prita Devy Igiany Putra, Dwi Anantama Putri Lestari, Adriana Rahmawati, Anggita Raihan Dicky Ardiansyah Resia Perwirani Risa Kurnia Wati Rizka Licia Rizka Licia Robi Wariyanto Robi Wariyanto Abdullah Roki Mahendra Safitri, Rizky Nur Salsa Bila Karin Santoso, Azis Aji Sari , Arum Astika Sari, Yayak Kartika Sevi Oktrianadewi Shavitri Chandriani Siti Oktavia Nur Romadhoni Siti Slasaini Ahluljanah Ahluljanah Siti Solikah Sofyan Pariyasto Sofyan Pariyasto Sri Suparti Sri Suparti Sri Wulandari Sri Wulandari Sri Wulandari SRI WULANDARI Sri Wulandari Sulistyati, Hanifah Shobri Sunandar, Ahmad Suryani Suryani . Susena, Edy Suyaningrum Syafitri Hasanah Syahrul Syahrul Tri Martini Patria Turnad Lenggo Ginta Vicky Arfeni Warongan vicky arfeni warongan, vicky arfeni Vivi Rahmawati Wahyu Ratri Sukmaningsih Wicaksono, Aliansi Widiyoko, Aries Widiyoko, Aries Widiyoko Yoga Dwi Pambudi Yudha Christianto F. Zahroh, Salsabila Ummu Zainal Arifin

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