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Pengembangan Digiwisata Berbasis Potensi Lokal Menuju Kawasan Wisata Terintegrasi Desa Kerajinan Tembaga Cepogo, Boyolali Dewi Saptantinah Puji Astuti; Catur Sugiarto; Zainal Arifin; Edi Wibowo; Kharis Triyono
WASANA NYATA Vol 9, No 2 (2025)
Publisher : STIE AUB Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36587/wasananyata.v9i2.2080

Abstract

Program pengabdian masyarakat ini bertujuan untuk mengembangkan potensi wisata kerajinan tembaga di Desa Cepogo melalui pendekatan digitalisasi usaha dan inovasi lingkungan. Desa Cepogo memiliki potensi besar di bidang ekonomi kreatif, namun menghadapi tantangan dalam hal literasi digital, promosi daring, dan pengelolaan limbah wisata. Kegiatan dilaksanakan melalui empat tahap: sosialisasi, pelatihan teknologi, pendampingan lapangan, dan evaluasi. Hasil kegiatan menunjukkan peningkatan literasi keuangan mitra hingga 85%, adopsi sistem akuntansi digital oleh 75% pengrajin, peningkatan omzet 30%, dan kenaikan kunjungan wisata sebesar 25%. Program ini menghasilkan sistem reservasi digital, unit maggot edukatif, serta publikasi promosi wisata digital yang berkelanjutan. Integrasi antara teknologi dan kearifan lokal memperkuat Desa Cepogo sebagai model digiwisata berbasis budaya dan lingkungan berkelanjutan.
Integration of renewable energy for sustainable electric vehicle charging in Sidoarjo, Indonesia: a techno-economic perspective Mochamad Choifin; Yuki Trisnoaji; Zainal Arifin; Mochamad Subchan Mauludin; Marsya Aulia Rizkita; Singgih Dwi Prasetyo; Dony Perdana
International Journal of Applied Power Engineering (IJAPE) Vol 15, No 1: March 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v15.i1.pp23-36

Abstract

This study explores the techno-economic feasibility of integrating solar photovoltaic (PV) systems for electric vehicle (EV) charging infrastructure in Sidoarjo, Indonesia. Through simulation using HOMER Pro software, both standalone PV and PV-grid hybrid configurations were evaluated under real-world EV load profiles. The analysis reveals that the PV-grid hybrid system demonstrates superior economic performance, achieving an annual energy production of 39,214 kWh, a levelized cost of energy (LCOE) of $0.3975/kWh, and a return on investment (ROI) of 62.01% over 20 years, despite a payback period exceeding 30 years. Sensitivity analysis confirms that the system remains moderately resilient under a 10% reduction in solar irradiance or a 20% increase in EV demand. The study also compares the standalone PV configuration, which, while suitable for off-grid applications, results in significant energy underutilization. Moreover, the PV-grid model supports surplus electricity sales, enhancing financial viability. These findings provide actionable insights for stakeholders, energy planners, and policymakers aiming to scale EV charging infrastructure sustainably in Indonesia’s urban environments.
Physics-Informed Neural Network with Thevenin Equivalent Circuit for Accurate SOC Li-ion Battery Estimation Chico Hermanu Brillianto Apribowo; Muhamad Dzaky Ashidqi; Zainal Arifin; Henry Probo Santoso
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2613

Abstract

Accurate state of charge (SOC) estimation is essential for the safety, performance, and longevity of lithium-ion batteries. Physics-based models such as equivalent circuit models (ECMs) are computationally efficient but struggle under nonlinear and time-varying conditions, whereas purely data-driven approaches often lack interpretability. This study proposes a hybrid framework that integrates a physics-informed neural network (PINN) with a first-order Thevenin ECM for dynamic SOC estimation using only terminal voltage and current inputs. The method incorporates physically derived parameters including open-circuit voltage (OCV), polarization resistance, and capacitance identified through pulse testing. An eighth-order OCV–SOC polynomial regression optimized with a genetic algorithm (GA) enables nonlinear mapping, while the Newton–Raphson (NR) method is applied for final SOC estimation. Experimental validation was performed on 18 Ah lithium iron phosphate (LFP) cells over 300 charge–discharge cycles at 20 °C, extended up to 2000 cycles under 1C/2C rates with cut-off voltages of 3.7 V and 2.7 V. Comparative analysis with extended kalman filters (EKF) and standard neural networks (NN) demonstrates the superiority of the proposed method, achieving a root mean squared error (RMSE) of 0.103, mean absolute percentage error (MAPE) of 0.702%, and coefficient of determination (R²) of 0.998. By embedding physical constraints into the learning process, the PINN enhances accuracy, robustness, and generalizability, while reducing estimation uncertainty, thereby offering a scalable and interpretable solution for real-time battery management systems (BMS) in electric vehicles (EVs) and battery energy storage systems (BESS).
Effect of Hole Geometry Shape in Vortex Generators on Fluid Output Temperature: Computational Fluids Dynamics Validation Mohd Afzanizam Mohd Rosli; Singgih Dwi Prasetyo; Dominicus Danardono Dwi Prija Tjahjana; Alfian Fahrul Yuliansyah; Zainal Arifin
Mekanika: Majalah Ilmiah Mekanika Vol 22, No 2 (2023): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v22i2.71340

Abstract

Several methods to enhance heat transfer can be classified into three categories: active, passive, or hybrid. Among these methods, Vortex Generators (VGs) are one passive heat transfer enhancement device widely used in heat exchangers. This study aims to explore the geometric shapes of VGs equipped with longitudinal holes and examine their influence on the outlet temperature of the fluid. For the analysis in this research, a three-dimensional Computational Fluid Dynamics (CFD) simulation using ANSYS Fluent software was employed. The increased heat transfer and flow resistance in the VG geometry were evaluated based on previous research for validation. The study results demonstrate that the simulation produces fluid outlet temperature values and velocity contours that closely resemble the results obtained from the reference study. The validation error of this research was found to be only 0.02%, indicating high quality and accurate simulation results. Furthermore, the study compared various geometries of the VG holes in the system. Among these geometries, hexagonal-shaped VG holes exhibited high-velocity contours on the VG side while achieving the lowest fluid outlet temperature at approximately 303.53 K. The findings of this study serve as a basis for further developments in enhancing the efficiency and performance of heat exchangers using VGs.
Nanofiber Semiconductor Experiment with Distance Variation Electrospinning Method to Improve DSSC Performance Denny Widhiyanuriyawan; Zainal Arifin; Syamsul Hadi; Muhammad Rijalul Fadli
Mekanika: Majalah Ilmiah Mekanika Vol 21, No 1 (2022): MEKANIKA: Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v21i1.51479

Abstract

Dye-Sensitized Solar Cell (DSSC) is a solar cell that uses dyes to transfer sunlight to electrical energy. DSSC construction uses a layered system (sandwich) that consists of a working electrode and an opposing electrode, both of which are placed on conducting glass and electrolytes to allow electron cycling. DSSC has a high price, so increasing efficiency is needed to use these solar cells more widely. This research aims to determine the effect of the distance between the tip and the rotating collector to increase the efficiency of the Dye-Sensitized Solar Cell (DSSC) and examine its impact on the morphology of the ZnO nanofiber. This experiment is carried out by varying the distance between the tip to the rotating collector, 4 cm, 6 cm, and 8 cm. This research indicates that at a distance of 8 cm, it produces a small, uniform, and stable ZnO nanofiber structure with Voc, Jsc, FF, and DSSC efficiency values of 0.559 V, 9.809 mA/cm2, 43.3%, and 2.3%. In addition, at a distance of 8 cm, it also produces the highest DSSC electrical efficiency from the other distances due to the absorbance of the dye and high electron excitation. 
Wahana Ayun Tangan sebagai Sarana Interaksi Anak dengan Dunia Luar di Taman Mekarsari, Boyolali Budi Kristiawan; Agung Tri Wijayanta; Syamsul Hadi; Indri Yaningsih; Dwi Aries Himawanto; Eko Prasetya Budiana; Ubaidillah Ubaidillah; Zainal Arifin; Noval Fattah Alfaiz; Singgih Dwi Prasetyo
SEMAR (Jurnal Ilmu Pengetahuan, Teknologi, dan Seni bagi Masyarakat) Vol 13, No 2 (2024): November
Publisher : LPPM UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/semar.v13i2.79467

Abstract

Taman bermain adalah suatu lingkungan yang didesain secara khusus untuk memberikan kesempatan kepada anak-anak untuk bermain, belajar, dan berinteraksi. Selain berfungsi sebagai tempat hiburan, taman bermain juga memiliki peran penting sebagai ruang pendidikan yang mendukung perkembangan fisik, kognitif, sosial, dan emosional anak-anak. Pengabdian ini memiliki tujuan untuk merancang desain wahana bermain ayun tangan yang mempertimbangkan faktor keselamatan, kenyamanan, dan pengembangan anak di Taman Mekarsari Desa Kaligentong, Kecamatan Gladagsari, Kabupaten Boyolali. Wahana bermain ayun tangan ini didesain dengan menggunakan material yang aman dan tahan lama, serta menerapkan prinsip-prinsip desain yang memungkinkan anak-anak untuk bergerak, bereksplorasi, dan menggunakan imajinasi mereka dengan bebas. Wahana bermain ayun tangan memiliki peran yang penting dalam meningkatkan kualitas hidup anak-anak dengan memberikan mereka kesempatan untuk bermain, belajar, dan tumbuh secara holistik. Dengan adanya wahana ini, anak-anak dapat mengembangkan keterampilan motorik, kognitif, dan sosial mereka sambil menikmati pengalaman bermain yang menyenangkan. Wahana ini diharapkan dapat menciptakan lingkungan yang merangsang interaksi sosial, memperluas keterampilan anak-anak, dan meningkatkan kualitas hidup mereka melalui kesempatan bermain dan belajar. Kata kunci : pengabdian, taman bermain, ayun tangan, edukasi
Penerapan Perangkap Lampu LED Sebagai Upaya Pengendalian Hama Ramah Lingkungan di Lahan Sawah Desa Tawengan Anditya Gilang Rizky Pradana; Cahyaningtyas Putri Suhita; Desy Setyaningrum; Dewi Nawang Suprihatin; Didik Suryadi; Dimar Hantari; Edi Paryanto; Febry Nurhidayati; Hardian Ningsih; Zainal Arifin
Kreasi: Jurnal Inovasi dan Pengabdian kepada Masyarakat Vol. 6 No. 2 (2026): Juli
Publisher : BALE LITERASI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/kreasi.v6i2.4011

Abstract

Tawengan Village, Sambi District, Boyolali Regency, is an agricultural area where the majority of the population earns their livelihood from rice farming. Rice farmers in Tawengan Village, particularly members of the Amrih Tentrem Farmer Group, face various cultivation challenges, one of the most significant being severe insect pest infestations that reduce rice production. Stem borers, green leafhoppers, rice bugs (Leptocorisa spp.), and other insect pests have caused an estimated 31% decline in rice productivity, as well as deterioration in grain quality. This community service program aimed to address these challenges through the implementation of LED light trap technology as an environmentally friendly pest management method in rice cultivation. The technology utilizes LED light to attract and capture insect pests, thereby suppressing pest populations and reducing pest-related damage without leaving harmful chemical residues. The program was conducted in Tawengan Village, Sambi District, Boyolali Regency. Its implementation consisted of two main activities: educational outreach and apllying the installation of LED light traps. The educational outreach was delivered through interactive presentations, group discussions, and question-and-answer sessions to enhance farmers' understanding of environmentally friendly pest management. Subsequently, the LED light traps were installed using a participatory and demonstrative approach, actively involving farmers in demonstration plots managed by the Amrih Tentrem Farmer Group. This program also contributes to the achievement of the Sustainable Development Goals (SDGs), particularly SDG 4 (Quality Education) by enhancing farmers' knowledge and technical competencies in implementing environmentally friendly pest management technologies, and SDG 17 (Partnerships for the Goals) by fostering collaboration among universities, the village government, farmer groups, and local farmers in the implementation and dissemination of sustainable pest control technology.
Pembuatan Pocket Hand Sanitizer Berbahan Dasar Daun Kersen (Muntingia calabura L.) Aroma Bunga Melati (Jasminum sambac) Zainal Arifin; Nurul Afifah; Rizki Puspita Dewanti
Journal of Applied Agriculture, Health, and Technology Vol. 2 No. 1 (2023): June
Publisher : Sekolah Vokasi, Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jaht.v2i1.565

Abstract

A Folia Fresh is a hand sanitizer product in the form of a practical pocket spray made from natural base ingredients of Kersen leaf (Muntingia calabura L.) with a refreshing aroma of Jasmine Flower (Jasminum sambac). Kersen or talok (Muntingia calabura L.) is a kind of shade tree that we can easily find on the roadside. Kersen (Muntigia calabura L.) contains bioactive compounds, namely flavonoid, saponin, triterpene, steroid, and tannin which are compounds that have the potential as antibacterial. Cherry leaves extracts were obtained by maserasi using 70% ethanol as solvent. Cherry leaves were meserated for 21 x 24 hours to obtain the filtrate. The extract is then processed into a hand sanitizer product with the addition of aquadest, glycerin, methyl paraben, and the aroma of Jasmine Flowers. Jasmine flower has active substances that can help regenerate healthy skin, moisturize dry skin, and fight the symptoms of aging.