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All Journal Innofarm Jurnal Inovasi Pertanian Biomedical and Mechanical Engineering Journal Sangkalemo Jurnal Nagara Bhakti: Jurnal Pengabdian Kepada Masyarakat Jurnal Mahatvavirya Journal of Mechanical Engineering and Applied Technology Asian Journal of Social and Humanities Jurnal Pengabdian Widya Dharma Jurnal Sains Materi Indonesia
Muryanto
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ERGONOMIC POSTURE CLASSIFICATION OF BENCH WORK UTILIZING MUSCLE DATA: A CASE STUDY IN EDUCATIONAL WORKSHOP Putri, Farika Tono; Purwati, Wiwik; Margana; Supriyo; Prawibowo, Hartanto; Pasmanasari, Elta Diah; Ismail, Rifky; Kadavi, Fadhil Muhammad; Muryanto
Journal of Mechanical Engineering and Applied Technology Vol. 3 No. 2 (2025): VOLUME 3 ISSUE 2 YEAR 2025 (JULY 2025)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v3i2.6674

Abstract

Occupational musculoskeletal disorders (MSDs) often result from prolonged non-ergonomic postures, especially in educational and industrial bench work activities. This study presents an approach to classify ergonomic and non-ergonomic working postures using surface electromyography (sEMG) signals and machine learning. sEMG data were recorded from four upper limb muscles during simulated bench work conditions. Time-domain and frequency-domain features were extracted from segmented EMG signals using sliding windows. Dimensionality reduction was performed using Principal Component Analysis (PCA), and classification was carried out using logistic regression. The proposed system achieved an overall classification accuracy of 75% in distinguishing ergonomic and non-ergonomic postures. Visualization using PCA and Linear Discriminant Analysis (LDA) showed clear class separation, validating the discriminatory power of the extracted features. While the small sample size and class imbalance were identified as limitations, the study demonstrates that a simple and interpretable model like Logistic Regression, when combined with proper feature engineering, can yield promising results.This work contributes to the development of low-cost, efficient, and interpretable ergonomic assessment tools. It is particularly relevant for vocational and educational environments where real-time posture monitoring and early prevention of MSDs are essential. Future research should focus on expanding the dataset, exploring deep learning methods, and implementing real-time wearable systems.
Utilization of Potassium Carbonate-Ethylene Glycol as Deep Eutectic Solvent to Delignification Oil Palm Empty Fruit Bunch for Furfural and Ethanol Production Muryanto; Amelia, Fanny; Nurbayti, Siti; Sudiyani, Yanni; Gozan, Misri
Jurnal Sains Materi Indonesia Vol. 25 No. 2 (2024): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2024.1260

Abstract

Pretreatment using Deep Eutectic Solvent (DES) was done to reduce the lignin content in oil palm empty fruit bunch (OPEFB). DES solution was prepared by combining Potassium Carbonate (K2CO3) as hydrogen bond acceptors (HBA) and Ethylene Glycol (EG) as hydrogen bond donors (HBD). This study aimed to obtain optimum conditions in the pretreatment process and determine the levels of lignin, cellulose, hemicellulose, and glucose in OPEFB. The pretreatment stage was performed at different temperature parameters, 100, 120, and 150°C, for 60 minutes to produce optimum conditions. Biomass pretreated with DES was hydrolyzed by cellulase complex to obtain glycose and xylose. The results showed that the pretreatment optimum condition value achieved with DES K2CO3:EG (1:10) at 150°C for 60 minutes was able to degrade lignin by 46,06%, hemicellulose by 4,08%, increase cellulose by 60,21%. The glucose and xylose content reached 58.48 g/l and 26.60 g/l, respectively. This sugar has potential for ethanol production from glucose and furfural production from xylose.
The Role of Self-Leadership in Public Health: Controversies in Stunting Prevention Efforts by Village Development Non-Commissioned Officers (Babinsa) Muryanto; Ratminto, Ratminto; Ikhwan, Hakimul; Listyaningsih, Umi
Asian Journal of Social and Humanities Vol. 4 No. 4 (2026): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/ajosh.v4i4.663

Abstract

Stunting is a significant health problem in Indonesia, particularly in rural areas. This study emphasizes the self-leadership of Babinsa (village supervisory non-commissioned officers)—as street-level actors—in stunting prevention in Indonesia. It aims to explore the role of village development non-commissioned officers (NCOs) of the Indonesian National Armed Forces (TNI), known as Babinsa, in stunting prevention efforts by examining how a self-leadership model can enhance their effectiveness in addressing this public health challenge. This study used a qualitative approach with a case study design, focusing on Babinsa in Magelang Regency, Central Java. Data were collected through in-depth interviews with key informants, including Babinsa, Posyandu cadres, village midwives, village officials, and families of stunting sufferers. Thematic analysis was used to identify key themes and insights from the data. The findings revealed that Babinsa (village-based non-commissioned officers) who applied self-leadership principles demonstrated increased adaptability in implementing stunting prevention strategies tailored to community needs. However, challenges such as bureaucratic constraints and limited resources impacted the effectiveness of these efforts. Collaboration between Babinsa, health workers, and community members proved crucial for successful interventions, highlighting the importance of cultural sensitivity and community engagement. The study concluded that implementing a self-leadership model by Babinsa could significantly improve their effectiveness in stunting prevention. Insights from this study can inform policymakers and practitioners in designing better training programs and support systems to reduce the prevalence of stunting in Indonesia.
PELATIHAN PEMBUATAN WEBSITE SEBAGAI PENUNJANG PROSES PEMBELAJARAN UNTUK GURU DI SD N 1 KARANGNOM KLATEN Wuryandari, Aryati; Muryanto; Hartono, Fajar Budi; Prasetyo, Hendro Joko; Kusuma, Dito Anggit; Meutifa, Ellis Cindy; Kristanto, Yepta Ferdi
WIDHARMA - Jurnal Pengabdian Widya Dharma Vol. 5 No. 01 (2026): Januari 2026
Publisher : LPPM Universitas Widya Dharma Klaten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54840/widharma.v5i01.532

Abstract

The development of education in Indonesia demands a transformation in the curriculum and the use of technology to improve the quality of learning. A curriculum that is adaptive to current developments needs to be supported by information technology to make the teaching and learning process more effective and inclusive. Websites are one technology that plays a crucial role as a learning medium, a means of communication, and a provider of information for schools, teachers, students, and parents. However, limited teacher competency in website creation remains a barrier, primarily due to differences in expertise. This problem is also faced by SDN 1 Karanganom Klaten, where the majority of teachers do not yet have the skills to develop learning websites. As a solution, Widya Dharma University Klaten, in collaboration with SDN 1 Karanganom, conducted community service activities in the form of website creation training to support the learning process. This activity aims to improve teacher competency in website utilization and strengthen the synergy between universities and schools in supporting the improvement of educational quality.
Co-Authors Akhyari Amelia, Fanny Anoeng Prasetyo Arhama Insani Dewi Sondari Fajar Budi Hartono Farika T Putri Frangky Silitonga Gatot Subagya Hakimul Ikhwan Hari Jati Hendri Candra Bukhari Hendro Joko Prasetiyo Herdin Yudha Puspita Heru Nur Alamsyah Kadavi, Fadhil Muhammad Kristanto, Yepta Ferdi Kusuma, Dito Anggit Margana Margana Mawarni, Rista Siti Meliana, Yenny Mella Katrina Sari Meutifa, Ellis Cindy Misri Gozan Nurhani Aryana, Nurhani Ogino, Chiaki Pasmanasari, Elta Diah Prawibowo, Hartanto Priyono Priyono Purwati, Wiwik Putri, Farika Tono Rachmat Setiawibawa Ragil T Indrawati RATMINTO, RATMINTO Rifky Ismail Roni Sulistiyono Rusumayanti, Felli Safriana, Eni Septiyanti, Melati Sermadatar Dimas Widhi Nugraha Sermadatar Gabriel Marahuku Sermadatar Nugrahan Hutabarat Sermatutar Luhur Imam Seto Sertar Dandi Prama Putra Sertar Mohammad Thohry Thohir Siswadi Siswadi Siti Nurbayti Sopiin Sulistri Anuria Supriyo Umi Listyaningsih Wahyu I Nugroho Widya FATRIASARI Witta Kartika Restu Yanni Sudiyani Yosep Natan Nitit