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All Journal Piston: Journal of Technical Engineering Journal of Innovative and Creativity ⁠International Journal of Sustainable Social Culture, Science Technology, Management, and Law Humanities ⁠International Journal of Asian Pacific Community Service
Triawati, Indri
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Social Sciences Other

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Development of environmentally conscious animal food supply to meet protein consumption in Blitar district Azis, Rosidi; Juniarti Wulan Lestari; Hani Widhianata; Eunike Sri Puspaningsih; Eka Sudibya; Novan Noviansah; Triawati, Indri
⁠International Journal of Asia Pacific Community Service Vol. 1 No. 2 (2024)
Publisher : Universitas Kristen Cipta Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71131/5rmrmf64

Abstract

Developing environmentally friendly livestock food provision in Blitar Regency through duck farming is one of the strategic efforts to increase community animal protein consumption while maintaining environmental sustainability. This community service program is designed with a participatory approach, education, and application of appropriate technology. The methods used include surveys, farmer training, implementation of technology to increase livestock productivity, use of biodigesters, and strengthening farmer institutions. The evaluation results showed a significant increase in farmer knowledge and skills, with an average post-test score increasing by 40% compared to the pre-test. The adoption of appropriate technology, such as feed biofermentation, and biodigesters, has succeeded in reducing production costs by 30%. Livestock productivity increased with production, while duck mortality rates decreased from 15% to 5%. Strengthening farmer institutions through the formation of farmer groups also increases the organizational capacity and bargaining power of farmers, including in accessing government financing and support. This program not only has a positive impact on farmer welfare but also contributes to meeting the community's animal protein needs and better environmental management. The sustainability of this program is expected to be achieved through supervision and synergy between the government, academics, and the private sector. This holistic approach shows great potential for replication in other areas with similar conditions.
Analysis of Rainfall Characteristics using Hydrognomon v.4.0 in Karangploso, Malang Triawati, Indri; Ali, Atif Muhammad; Palupi, Retno; Richard, Hendrik; Hariadi, Agung; Mahmud, Mahmud; Pratama, Raditya; Habiburrahman , Novan
⁠International Journal of Sustainable Social Culture, Science Technology, Management, and Law Humanities Vol. 1 No. 2 (2024)
Publisher : Universitas Kristen Cipta Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71131/887gae84

Abstract

Rainfall is hydrology event that occurred seasonal in every year. There are two seasons occurred in Indonesia, dry season and rainy season. The analysis of rainfall characteristics plays a significant role to predict the rainfall occurrence and probability of flash flood. In this paper, rainfall analysis using Hydrognomon v.4.0 will provide hydrology data information, such as rainfall intensity and time series. The highest maximum rainfall of 526 mm (in 2010) has a return period of about 11 years. This means that rainfall of this magnitude can be expected to occur once every 11 years. The maximum rainfall of 425 mm (2013) has a return period of about 5.5 years, indicating a more frequent occurrence than the highest rainfall. Thus, it makes data trend rainfall with higher values tends to have longer return periods, indicating infrequent intensity. However, rainfall with lower intensity tends to have shorter return periods and occurring more frequently.
The Influence of Road Geometric Design on Traffic Accident Rates on Jalan Mayjend Sungkono, Malang City Palupi, Retno; Mahmud, Mahmud; Khilmi, Muhamad; Triawati, Indri; Winoto, Djarot; Wibowo, Akbar
⁠International Journal of Sustainable Social Culture, Science Technology, Management, and Law Humanities Vol. 1 No. 2 (2024)
Publisher : Universitas Kristen Cipta Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71131/f30zbm10

Abstract

Traffic safety is a critical concern on urban roads, including Jalan Mayjend Sungkono in Malang City, which experiences high accident rates. This study aims to analyze the influence of geometric road design and user behavior on traffic accidents from 2008 to 2020. Factors such as varying road widths, steep slopes, inadequate signage, and limited pedestrian facilities were identified as major contributors to traffic hazards. Additionally, risky driving behaviors and the dominance of motorcycles and private cars highlight safety challenges. The research employed a quantitative descriptive-analytical method. Primary data was collected through field surveys measuring geometric elements such as curve radius, superelevation, and grade. Secondary data on accident rates were sourced from police records. A polynomial regression analysis was conducted to determine the relationship between geometric factors and accident frequency. The coefficient of determination (R²) values for elements such as clear zones (57%), grade (50.04%), and superelevation (36%) indicated their significant impact on accident rates. Traffic patterns revealed peak hours during 6:00–9:00 AM and 4:00–7:00 PM, with weekend surges due to recreational activities. Results show that geometric improvements, particularly in clear zones and road grade, could substantially reduce accidents. Behavioral factors, such as speeding and abrupt stops by public transport, also exacerbate risks. Pedestrian safety remains a concern due to the lack of adequate crossings and sidewalks, especially near schools and markets. This study underscores the importance of integrated interventions involving road design enhancements and stricter traffic regulation enforcement to improve safety on Jalan Mayjend Sungkono.
Analisis Luas Daerah Rawan Banjir Kota Medan Berbasis Sistem Informasi Geografis (SIG) Triawati, Indri; Nur Rakhmawati, Annisa; Nursamhuda, Wahyu
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

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Abstract

Medan City is an urban area that frequently experiences flooding during the rainy season. This study aims to analyze the extent of flood-prone areas in Medan City using Geographic Information System (GIS) technology. The research method was carried out through a georeferencing process on flood-prone area maps and the creation of shape files to calculate the area affected by flooding. The data used included flood vulnerability parameters and water inundation maps, which were then processed using QGIS software. The analysis results show that areas with a low level of flood vulnerability cover an area of ​​approximately 2,844 hectares (10.72%), areas with a moderate level of vulnerability cover 8,642.4 hectares (32.6%), and areas with a high level of vulnerability cover 14,632 hectares (55.2%). These findings indicate that more than half of Medan City's area is categorized as moderate to severe flood prone. Therefore, more effective mitigation measures and spatial planning management are needed to minimize the risk of future flood disasters.
Strengthening Village Youth Leadership Competencies through Participatory Training Models and Community-Based Discussion Forums Supriadi, Supriadi; Arissaputra Aswanto, Adhitya Rizky; Nasir, Mohammad; Irwan, Moh; Zulfaidah, Arini; Triawati, Indri
⁠International Journal of Asia Pacific Community Service Vol. 2 No. 2 (2025)
Publisher : Universitas Kristen Cipta Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71131/afzpsf15

Abstract

Limited civic literacy capacity and weak village community governance remain significant challenges to strengthening community participation in various rural areas of Indonesia. This situation was also found in Duko Village , Arjasa District , Sumenep Regency , which is characterized by low understanding among officials and the community regarding digital literacy, village profile documentation, and participatory governance practices. This community service activity aims to increase civic literacy capacity and strengthen community governance through structured and collaborative mentoring. The implementation method uses a participatory action approach, including needs assessment , citizenship and digital literacy training, assistance in preparing village profiles, and facilitating improvements to community governance mechanisms. The results of the community service show a significant increase in the community's ability to compile and update village profiles, an increased understanding of substantive citizenship values, and the formation of more focused coordination and accountability practices within village organizations. The implications of this activity confirm that a mentoring model based on participation, literacy, and cross-stakeholder collaboration can be an effective strategy in strengthening community capacity and supporting sustainable village development.
Optimizing the Number of Curved Turbine Blades on Flettner Rotors for Sustainable Ship Propulsion Without Fuel Habiburrahman, Novan; Triawati, Indri
Piston: Journal of Technical Engineering Vol. 9 No. 2 (2026)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

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Abstract

The use of vertical rotating cylinders based on the Magnus effect as an alternative propulsion system for ships has been explored since the early 20th century. By harnessing lateral wind, such rotors are capable of generating thrust to replace conventional sails while simultaneously reducing fossil fuel consumption. However, the efficiency of conventional Flettner rotors remains limited due to their reliance on an external energy supply from driving motors. The novelty of this study lies in the development of a Flettner rotor integrated with quarter-circular blades mounted coaxially to enable self-rotation. This design differs from previous studies that predominantly employed half-circular blades or full rotors, and it is expected to enhance the power coefficient (????ₚ) and torque coefficient (????ᵥ) while maintaining more compact dimensions. This research aims to determine the optimal configuration of blade numbers (2, 4, 8, and 16) and aspect ratio (AR) that delivers superior aerodynamic performance for ship propulsion applications. An experimental approach was conducted using wind tunnel testing of scaled models. Variations in blade number were evaluated based on key performance parameters, including rotor speed, torque, thrust, and the coefficients ????ₚ and ????ᵥ. Data acquisition employed RPM sensors, load cells, and a microcontroller-based system. Statistical analysis was applied to compare each blade configuration against the initial hypothesis that increasing the number of blades improves rotor performance up to a certain limit, beyond which excessive blade numbers reduce efficiency due to increased drag. The findings of this research are expected to contribute to the advancement of more efficient, autonomous, and sustainable ship propulsion systems through the use of a Flettner rotor driven purely by wind energy.
Co-Authors Akbar Wibowo, Akbar Ali, Atif Muhammad Arissaputra Aswanto, Adhitya Rizky Azis, Rosidi Eka Sudibya Eunike Sri Puspaningsih Hani Widhianata, Hani HARIADI, AGUNG Irwan, Moh Juniarti Wulan Lestari Khilmi, Muhamad Mahmud Mahmud Mohammad Nasir, Mohammad Novan Habiburrahman Novan Noviansah Nur Rakhmawati, Annisa Nursamhuda, Wahyu Raditya Pratama Retno Palupi Richard, Hendrik Supriadi Supriadi Winoto, Djarot Zulfaidah, Arini