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All Journal Majalah Ilmiah MOMENTUM Jurnal Rekayasa Mesin Jurnal Basicedu Journal of Robotics and Control (JRC) Jurnal Abdi Insani Nusantara Science and Technology Proceedings Jurnal Pengbdian Teknik Mesin Biomedical and Mechanical Engineering Journal Journal of Mechanical Engineering, Science, and Innovation Archive: Jurnal Pengabdian Kepada Masyarakat Jurnal Basicedu JATIMAS : Jurnal Pertanian dan Pengabdian Masyarakat Maddana: Jurnal Pengabdian Kepada Masyarakat AT-TAKLIM: Jurnal Pendidikan Multidisiplin Co-Catalyst: Journal of Science Education Research and Theories
Wahyu Dwi Lestari
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Other

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Pengaruh Kecepatan Treadmill terhadap Parameter Kinematika Berjalan: Studi Kasus pada Kecepatan 2,0; 2,5; dan 3,0 km/jam Lestari, Wahyu Dwi; Fauzan Raka Mawandi
Jurnal Rekayasa Mesin Vol. 20 No. 1 (2025): Volume 20, Nomor 1, April 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i1.6278

Abstract

Penelitian tentang biomekanika gerak berjalan manusia memiliki posisi yang sangat penting di berbagai bidang. salah satunya adalah rehabilitasi, atletik, dan pembuatan kaki prostetik. Fokus dari penelitian ini untuk menganalisis tentang pengaruh variasi kecepatan pada treadmill terhadap parameter kinematika berjalan manusia seperti frekuensi, durasi langkah serta kecepatan dan percepatan sudut. Variasi kecepatan treadmill yang digunakan adalah 2,0; 2,5; dan 3,0 km/jam. Penelitian ini menggunakan desain studi kasus eksploratif (Single-subject case study) untuk mengevaluasi kelayakan dari sistem motion capture dengan menggunakan software Blender dan kamera GoPro Hero 9. Selanjutnya data akan dianalisa menggunakan MATLAB untuk mengetahui frekuensi, durasi langkah, serta kecepatan dan percepatan sudut setiap segmen sendi pada tubuh bagian bawah. Hasil menunjukkan bahwa peningkatan kecepatan treadmill menyebabkan durasi siklus berjalan yang lebih pendek, peningkatan frekuensi langkah, serta peningkatan kecepatan dan percepatan sudut segmen tubuh. Temuan ini memberikan wawasan tentang mekanisme adaptasi pola gerakan berjalan manusia dan kaitannya dalam rehabilitasi serta pelatihan atletik. Studi lebih lanjut sebaiknya mencakup jumlah partisipan yang lebih banyak dan mempertimbangkan faktor tambahan berupa gaya reaksi tanah untuk analisis yang lebih menyeluruh.
PELATIHAN MANAJEMEN RANTAI PASOK PUPUK ORGANIK BAGI KELOMPOK TANI DEWI SRI DESA JAJAR GUMREGAH lestari, Wahyu Dwi; Maulana, Hendra; Nuryananda, Praja Firdaus; Lestari, Mufida Diah
Jurnal Abdi Insani Vol 11 No 3 (2024): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v11i3.1782

Abstract

Good organic fertilizer supply chain management is essential to support the sustainability of agriculture in Indonesia, especially in rural areas. The Dewi Sri farmer group in Jajar Gumregah Village faces challenges in the distribution and stock management of organic fertilizer, which often impacts the productivity and quality of agricultural products. Improved knowledge and skills in supply chain management need to be trained, so that the distribution of organic fertilizer becomes more efficient, timely, and quality. The Organic Fertilizer Supply Chain Management Training for Dewi Sri Farmer Group in Jajar Gumregah Village aims to increase the capacity and efficiency of farmer groups in managing organic fertilizer production and distribution. Service activities involve several stages, starting from needs identification, program planning, training implementation, to evaluation and mentoring. Participants are given modules or practical guides as well as case studies to understand effective and efficient management of organic fertilizer distribution according to the needs of farmer groups. The results of the activities show that the implementation of effective supply chain management can increase the quality and quantity of organic fertilizer production, reduce operational costs, and improve the distribution system. Farmer group members gain new knowledge and skills in managing the supply chain more efficiently, which in turn supports increased agricultural productivity and economic welfare of the farming community. This service also contributes to the achievement of the Sustainable Development Goals (SDGs), particularly in ending hunger (SDG 2), promoting decent work and economic growth (SDG 8), and ensuring sustainable consumption and production patterns (SDG 12). This service underscores the importance of continuous training and technology application in agricultural supply chain management.
Pendampingan Budidaya Kopi Melalui Pelatihan Petik Merah dan Teknik Panen dalam Meningkatkan Kualitas Produksi di Desa Jengglungaharjo Kecamatan Tanggunggunung Kabupaten Tulungagung Lestari, Mufida Diah; Suryaningrum, Dwi Ari; Alfattama, Lona Chinsia; Lestari, Wahyu Dwi; Nuryananda, Praja Firdaus; Tjahjono, Jojok Dwirido
JATIMAS : Jurnal Pertanian dan Pengabdian Masyarakat Vol. 5 No. 2 (2025): NOVEMBER
Publisher : Kadiri University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/jatimas.v5i2.7018

Abstract

This mentoring program on coffee cultivation, implemented through training in red-cherry picking and selective harvesting techniques, was conducted to improve the quality of coffee yields in Jengglungharjo Village, Tanggunggunung District, Tulungagung Regency. The abundant coffee production in the area holds significant potential as a driver of the local economy. However, the quality of the coffee beans has remained low due to mixed-harvest practices and the farmers’ limited understanding of proper harvesting procedures. The program was carried out in three main stages: delivering material on the importance of harvesting fully ripe coffee cherries, providing training on effective harvesting techniques, and offering initial post-harvest assistance to ensure that red-cherry yields were processed correctly. The results showed a significant improvement in farmers’ knowledge and skills in identifying ripe cherries and applying selective harvesting practices. Farmers began to understand the relationship between proper harvesting methods and improvements in coffee bean quality, including the increased proportion of premium-grade beans in both natural and full-washed processes. This training is expected to serve as an initial foundation for promoting more sustainable, productive, and economically valuable coffee cultivation practices for the community of Jengglungharjo Village. Program pendampingan budidaya kopi melalui pelatihan petik merah dan teknik panen selektif ini dilaksanakan untuk meningkatkan mutu hasil panen kopi di Desa Jengglungharjo, Kecamatan Tanggunggunung, Kabupaten Tulungagung. Produksi kopi yang melimpah di wilayah tersebut memiliki potensi besar sebagai penggerak ekonomi lokal. Namun, mutu biji kopi yang dihasilkan masih rendah akibat kebiasaan panen campur serta minimnya pemahaman petani mengenai prosedur panen yang tepat. Kegiatan ini dilaksanakan melalui tiga tahapan utama, yaitu penyampaian materi terkait pentingnya memanen buah kopi yang benar-benar matang, pelatihan teknik panen yang efektif, serta pendampingan pascapanen awal untuk memastikan hasil petik merah diproses secara benar. Hasil kegiatan menunjukkan peningkatan signifikan pada pengetahuan dan keterampilan petani dalam mengidentifikasi buah matang dan menerapkan panen selektif. Petani mulai memahami hubungan antara metode panen yang tepat dengan peningkatan kualitas biji kopi, termasuk meningkatnya proporsi biji berkualitas premium pada proses natural maupun full washed. Pelatihan ini diharapkan menjadi landasan awal untuk mewujudkan praktik budidaya kopi yang lebih berkelanjutan, produktif, dan bernilai ekonomi tinggi bagi masyarakat Desa Jengglungharjo
Optimization of Manufacturing Parameters for Below-Knee Prosthetic Sockets Based on 3D Printing Using the Taguchi Method Pilargenta , Higan; Lestari, Wahyu Dwi
Jurnal Rekayasa Mesin Vol. 20 No. 3 (2025): Volume 20, Nomor 3, Desember 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i3.6565

Abstract

Fused Deposition Modeling (FDM) technology is widely applied in the fabrication of transtibial prosthetic sockets due to its operational simplicity and high design flexibility. However, prolonged printing time remains a major constraint in improving production efficiency for clinical and industrial applications. This study aims to optimize the printing time of transtibial prosthetic sockets by adjusting three process parameters: socket wall thickness (1, 2, and 3 mm), thermoplastic filament type (PLA, ABS, and PP), and nozzle diameter (0.4 mm, 0.6 mm, and 0.8 mm). The Taguchi method with an L9 orthogonal array was employed as the experimental design. All specimens were fabricated using a Flashforge Guider II Series printer, and the printing time was evaluated using the Signal to Noise (S/N) ratio with the “smaller is better” criterion and analysis of variance (ANOVA) at a significance level of α = 0.05. The results indicate that nozzle diameter has the most significant effect on printing time, contributing 55.40%, followed by wall thickness at 39.51%, while material type contributes only 1.24% and is not statistically significant. The optimal parameter combination 1 mm wall thickness, PLA filament, and a 0.8 mm nozzle diameter reduced the average printing time by 24%, with a coefficient of variation below 5%. Confirmation tests yielded a validation S/N ratio of −64.58 dB, confirming the stability of the printing process. These findings provide practical guidance for accelerating the production rate of FDM based prosthetic sockets and suggest further research focusing on mechanical performance evaluation, infill pattern variation, and multi objective optimization.
Improving Science Learning Outcomes on Vibration and Wave Materials Through Discovery Learning for SMP Negeri 1 Tegalrejo Wahyu Dwi Lestari
Co-Catalyst: Journal of Science Education Research and Theories Vol. 1 No. 2 (2023): Dec 2023 Issue
Publisher : LPPM - Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/cocatalyst.v1i2.7494

Abstract

Science learning outcomes, especially vibration and wave material, are not optimal. The enthusiasm of students in participating in learning is less than optimal, which is indicated by the number of students who are less focused, less disciplined, and less active. To improve the science learning outcomes of vibration and wave material, research was conducted using the Discovery Learning model in class VIII D SMP Negeri 1 Tegalrejo, totaling 30 students. This research is a type of classroom action research conducted with two cycles. The method of data analysis of the research results used is descriptive quantitative and descriptive qualitative. From the initial test results of the cycle there were 9 students who completed learning individually with a percentage of learning completeness of 30%. In the first cycle test results, 20 students were declared individually complete with a percentage of learning completeness of 73.33%, while in cycle II the number of students who were individually complete was 26 students with a percentage of learning completeness of 86.67%. Based on the results of the study, it can be concluded that learning using the Discovery Learning model can improve the learning outcomes of IPA vibration and wave material in students of class VIII D SMP Negeri 1 Tegalrejo.
Co-Authors Adnyono, Ndaru Ahmad Khairul Faizin Ahmad Khairun Faizin Alfattama, Lona Chinsia Arif Hidayat, Muhammad Aryananda, Rangga Laksana Atika Andini Bayuseno, A P Danaryanto, A T Dera, Nurmala Santi Dewi, Deshinta Arrova Dwi Ari Suryaningrum, Dwi Ari Eva Yulia Puspaningrum Faiza, Linda Ziyadatul Faizin, Ahmad Khairul Fara Disa Durry Fauzan Raka Mawandi Ferdi Kurniawan Firmansah, Achmad Robi Ghozali, Achmad Imam Harya, Gyska Indah Humairah, Sayyidah I Gede Susrama Mas Diyasa Ika Nawang Puspitawati Ikhsanudin, Zaky Ishak, Sahional Ismail, R Issafira, Radissa Dzaky Jamari, J Kilo, Faisal Kurniawan, Ferdi L.Urip Widodo, Yohandrik Novel Karaman Lestari, Mufida Diah Luluk Edahwati Mahameru, Rolland D.K. Mahameru, Rolland Darin Khalifah Mahmudah, Imam Maulana, Hendra Mawandi, F.R. Mawandi, Fauzan Raka Mirnanda, D. Mirnanda, Dwiky Mr. Sutiyono Mukti, Abdi Satryo Ndaru Adyono Ndaru Adyono Ndaru Adyono, Ndaru Nikmah, Ulin Novel Karaman Nugroho, A Nunung Lusiana Margawati Nurrokhim, F.H.R. Nurrokhim, Firmansyah Hafizh Rizal Nuryananda, Praja Firdaus Pilargenta , Higan Prayoga, Adimas Dwi Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Rosyadi, Mochammad Wildan Rosyadi, Mochammad Willdan Rosyadi, Willdan Safitri, P.D. Safitri, Puspa Dinda Sari, Tria Puspa Suares, Reza Mardiansah Sutiyono Talango, Novriyanti Tjahjono, Jojok Dwirido Tria Puspa Sari Tyas Martika Anggriana Wahyu Caesarendra Widagda, Garda Dibya Widya Kusumaningsih Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Yanto, Agus Dwi Yudha, Dhian Satria