E-Journal Politeknik Negeri Cilacap
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Pengaruh Suhu Pemanas Pada Mesin Pengering Cocopeat Tipe Rotary Dryer
Full text linkThe rotary dryer is a machine designed to simplify the cocopeat drying process. The current process still relies on sunlight; this drying process has the drawback of longer drying times and uncontrolled moisture content. The maximum moisture content of the cocopeat must be 15%. This research method is an experiment using several parameters: a drum speed of 6 rpm, heating temperatures of 600°C, 900°C, and 1300°C, with varying drying times of 120 and 150 minutes. The drying process at a temperature of 600 °C resulted in a decrease in humidity efficiency of up to 56.7% with a water content value of 23.8% in 150 minutes and a mass of 3.7 kg. Meanwhile, for drying at a temperature of 1300 °C, the best reduction in efficiency was obtained compared to the previous temperature, a decrease in water content of up to 84% with a water content value of 8.55 and a mass of 2.7 kg using a time of 150 minutes
Pengembangan Media Pembelajaran Berbasis Motion Graphics untuk Edukasi Kesiapsiagaan Tsunami dengan Metode ADDIE
Full text linkIndonesia is geographically located in the Pacific Ring of Fire, making it a country with a high risk of natural disasters, especially tsunamis. Cilacap Regency, as one of the disaster-prone areas, has a low level of preparedness, thus requiring increased public knowledge about disaster risks. This study aims to improve the preparedness of educational units in facing tsunami disasters through educational media based on motion graphics animation. The method used is the development of ADDIE, which has five stages: Analysis, Design, Development, Implementation, and Evaluation, which is designed to increase understanding and awareness of the importance of disaster mitigation. The results of this study are an increase in students\u27 response abilities in facing emergency situations, as evidenced by the average score of students\u27 pre-test of 58.4, increasing to 82.6 in the post-test. The increase in the score of 24.2 points resulted in an N-Gain value of 0.58, which is in the moderate category, indicating that the use of educational animation media based on motion graphics is effective in increasing tsunami preparedness. Thus, this technology-based educational approach can be an innovative solution in supporting the Disaster Safe Education Unit (SPAB) program and creating a more disaster-resilient society
Pengembangan Usaha Kelompok Pengrajin Tenun Kain Donggala Melalui Diverifikasi Pewarnaan Alami Berbasis Daun
Full text linkThis Community Partnership Program (PKM) addresses the main challenges faced by weavers in the Subi Group in Limboro Village, Donggala Regency. The main problems identified are limited production capacity due to outdated equipment, a lack of standardized knowledge in natural dyeing techniques, and limited capital. The solutions implemented include modernizing the looms, providing comprehensive training in the extraction and application of natural dyes based on leaves (such as jembolan, guava, mango, and teak) with precise digital measurements, and introducing electric yarn winding machines, as well as providing capital assistance for raw materials. As a result, production efficiency has increased significantly, with weaving time reduced from 30 to 40 days to just 20 days per piece of fabric. The use of natural fixatives (alum, lime, and tunjung) ensures more stable, high-quality, and environmentally friendly colors. This program has successfully improved the technical capacity of artisans and preserved local culture. Cultural heritage, empowered the community economy, and created a foundation for the development of products with Geographical Indication potential
Kombinasi Algoritma TF-IDF dan Weighted Dice Similarity untuk Pengukuran Kemiripan Judul Tugas Akhir
Full text linkThe high similarity rate among undergraduate thesis titles has become a critical issue in maintaining the originality of academic work within higher education institutions. This study aims to develop an automated system for detecting title similarity by combining the Term Frequency–Inverse Document Frequency (TF-IDF) algorithm with the Weighted Dice Similarity method. TF-IDF is used to assign weights to important words in the titles, while Weighted Dice Similarity measures the degree of similarity between titles based on the distribution and weights of these words. The study utilizes a dataset of 200 manually annotated thesis titles as ground truth. The analysis process includes preprocessing, word weighting, and similarity computation between titles. Experimental results show that the system achieves an accuracy of 94%, a precision of 66.67%, a recall of 81.3%, and an average Weighted Dice similarity score of 0.62. Although the precision score is relatively moderate, the combination of both methods is considered effective, as it captures both lexical structure and semantic similarity, capabilities that are not fully achieved when using a single method alon
Sistem Pengawasan Perilaku Pengemudi Berbasis IoT Dengan Pemanfaatan LiDAR dan GPS Untuk Meningkatkan Keselamatan Berkendara
Full text linkIn 2022, a total of 139,258 traffic accidents occurred in Indonesia, encompassing all types of incidents, from minor to fatal. The high number of accidents, particularly those caused by speeding and unsafe following distances, highlights the need for a system capable of automatically monitoring and intervening in driver behavior. This study aims to develop an IoT-based control and monitoring system that not only detects violations such as overspeeding and insufficient following distance but also provides direct intervention in vehicle speed. The system utilizes an Arduino Mega and ESP32, equipped with GPS and LiDAR sensors, along with a DAC output to limit the accelerator pedal voltage when repeated violations are detected. Testing was conducted to evaluate sensor accuracy, IoT performance, and the effectiveness of speed intervention. The results showed a 100% success rate in five speed intervention tests, good sensor accuracy, and IoT notifications successfully delivered with an average delay of 5.9 seconds. The system proved to be effective and feasible as a technology-based solution to enhance driving safety
Rancang Bangun Sepeda Motor Listrik (SEMOLI) Generasi 3
Full text linkIn this research, the design process of the third generation of electric motorcycles (SEMOLI) is carried out, which is a development of the previous generation with the aim of developing electric vehicles using gearboxes, in order to add acceleration ratios to adjust to road or terrain conditions. as an alternative solution to the increase in fuel and the depletion of fossil energy sources. The results of this study support the national electric vehicle conversion program. The results can be used for the development of the automotive industry. The method used is research and development (R&D). The design process begins by calculating the design requirements for power transfer and frames. The frame simulation process produces a maximum stress of 149 MPa with a allowable stress of 163.2 MPa with a displacement of 2 mm. It is said to be safe to continue the manufacturing and fabrication process. The vehicle trial process produces a maximum vehicle speed of 55 km/h with an average energy consumption of 27 watts/hour
Peningkatan Efisiensi Bahan Bakar Melalui Redesain Aerodinamis Bodi Bus Dengan Metode Simulasi Computational Fluid Dynamics
Full text linkBuses are generally designed with an emphasis on aesthetics. However, the design also needs to consider aerodynamic performance factors, as they directly affect vehicle stability, fuel efficiency, and emissions levels. This study proposes an aerodynamic redesign of the bus body to reduce fuel consumption. The expected values can be calculated using two more targeted design models with the assistance of SolidWorks and Computational Fluid Dynamics (CFD) simulation method. This method was used to evaluate the influence of body design on vehicle performance. Results show that the conventional bus consumes 30,016.17 kJ/year, while the redesigned bus only consumes 21,935.79 kJ/year, with a 26.93% reduction in fuel consumption. Additionally, the redesigned bus exhibits a lower drag coefficient, drag force, and energy input, indicating the effectiveness of the aerodynamic improvements
Edukasi Menghadapi Era Digital Keuangan & Resiko Teknologi Finansial Melalui “Sekolah Media Literasi” (SMILE)
Full text linkThe rapid growth of digital technology has transformed traditional gambling activities—such as poker, casinos, mahjong, sports betting, cockfighting, dice games, lottery, and numbers gambling—into increasingly popular online practices. Although often perceived as entertainment, online gambling has significant negative impacts on social life. Addressing this issue requires collaboration among various stakeholders, including educational institutions that play a vital role in promoting media and financial literacy. The Faculty of Communication Sciences at Gunadarma University has taken part through the SMILE (School of Media Literacy) program, which focuses on financial literacy education. This program is implemented through counseling, mentoring, and training using presentations, interactive media, and focus group discussions. The results indicate an improvement in community understanding of healthy financial management. Nevertheless, such educational efforts should not be one-time initiatives but rather continuous activities in order to build a society that is financially literate, independent, and resilient against the negative impacts of online gambling.
Program Peningkatan Kesehatan Kerja melalui Edukasi Ergonomi dan Gaya Kerja Sehat pada Pekerja Home Industry
Full text linkThe lanting home industry in Cilacap Regency plays an important role in supporting the local economy. However, the predominantly manual production process places workers at risk of musculoskeletal disorders due to non-ergonomic working postures. This community service program aimed to improve occupational health among lanting workers through ergonomic education and the implementation of healthy work practices. The activity was conducted at one lanting home industry in Cilacap Regency and involved 30 workers. Evaluation was carried out using pre–post tests to assess changes in knowledge levels, complemented by observations of work behavior at the production site. The results showed a significant increase in workers’ knowledge, indicated by an increase in the proportion of workers in the high-knowledge category from 10% before the intervention to 73% after the intervention. Workers began to adopt better working postures, perform light stretching during work breaks, and demonstrated collective awareness by reminding each other to maintain proper working positions. The program proved to be effective, affordable, and easy to implement in improving awareness and healthy work behaviors in small-scale lanting home industries. This activity has the potential to be further developed as a simple ergonomic intervention model for similar traditional food industries
Penerapan Sistem Jalan Umum Pintar Berbasis Arduino dengan Supply Tenaga Surya di Desa Banjarwaru
Full text linkBanjarwaru Village in Cilacap Regency is facing problems related to the lack of Public Street Lighting (PJU), with several vital road sections being dark at nite. This condition significantly reduces safety levels, increases the risk of crime and accidents, and hinders the mobility and socio-economic activities of the community. Residents, especially women and children, feel unsafe to go outside, which impacts religious, social, and economic activities. Responding to this urgency, this community service program aims to improve the quality of life and well-being of the Banjarwaru Village community through the application of appropriate technology. The proposed solution is the installation of two units of an Arduino-based smart street lighting system powered by solar energy. The implementation method for this service involves field observation and experimentation in the design and construction process of public streetlights, and technology transfer to the community. The results of creating a smart public street light based on Arduino with solar power supply function well. At night, electricity is supplied by batteries. The batteries are charged during the day, when the solar cells receive sunlight. The final activity in this series of community service, and the closing event, was the handover and guidance to the Banjarwaru community, thru the Village Head of Banjarwaru, on how the smart public street lighting system powered by solar energy works and how to maintain it