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Utomo, Joko Budi
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Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics Social Sciences

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Developing Surface Rainfall Data Based on Blending of Satellite-Based Products and Rain Gauge Observations in the Ngawi Region, East Java Utomo, Joko Budi; Yuli Handoko, Eko; Aldila Syariz, Muhammad; Sopaheluwakan, Ardhasena
Jurnal Ilmu Fisika Vol 17 No 2 (2025): September 2025
Publisher : Jurusan Fisika FMIPA Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jif.17.2.110-124.2025

Abstract

Rainfall estimation can be performed using various methods, including direct satellite observations (RR-Satellite). However, these estimates show discrepancies when compared to actual observations in-situ rain gauges (RR-Obs). To address this challenge, one potential solution is integrating RR-Satellite with RR-Obs. The Kriging with External Drift (KED) interpolation method is a blending technique that incorporates RR-Satellite as external drift. This study utilized four satellite dataset, namely CHIRP, CMORPH, GSMAP_V8, and IMERG as auxiliary information to generate monthly rainfall estimates (RR-Blended) at 26 rain gauges in Ngawi, East Java, for the period 2001 - 2023. The performance of each satellite dataset was evaluated using Leave-One-Out Cross Validation (LOOCV). The results indicated that RR-Blended using CHIRP (bCHIRP) demonstrated the best accuracy at the climatological scale, with KGE > 0.3 and TSS > 0.65, outperforming other satellite dataset. At the monthly scale, bCHIRP, bCMORPH, and bIMERG showed better performance in different months throughout the year. In terms of spatial accuracy, bCMORPH achieved the highest performance. Our findings suggest that each satellite offers unique advantages based on the time and location of observation. Therefore, we recommend using a weighted combination of RR-Blended from four satellites as the most effective approach for obtaining the best rainfall estimates.
The Role of Social, Cultural, and Economic Environments in Determining Employment Opportunities for Vocational High School Graduates Utomo, Joko Budi; Haryanto, Sigit
Proceedings International Conference on Education Innovation and Social Science 2025: Proceedings International Conference on Education Innovation and Social Science
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

This study explores the role of social, cultural, and economic environments in determining employment opportunities for vocational high school graduates, with a case study at SMKN 1 Mondokan, Indonesia. Using a qualitative case study approach, data were collected through in-depth interviews, participant observation, and documentation involving students, alumni, teachers, parents, and industry partners. The results show that the social environment, particularly family support, teacher guidance, and peer influence plays a significant role in shaping graduates' readiness and access to employment. Culturally, local values, societal norms, and school work culture influence graduates' career perceptions and decisions, often creating tension between vocational ideals and traditional community expectations. Economically, the financial condition of graduates' families and the limited availability of local job opportunities significantly impact employment outcomes. Many graduates are compelled to work outside their area of expertise due to economic pressures or the lack of industry-aligned opportunities. Furthermore, although the school has implemented vocational programs such as internships, teaching factories, and entrepreneurship education, collaboration with industry remains inconsistent and fragmented. The study concludes that enhancing employment prospects for vocational graduates requires a systemic integration of educational institutions, industry partnerships, family involvement, and culturally adaptive career guidance. The findings contribute to strengthening the link between vocational education and the labor market, especially in semi-rural settings.
The Role of Social, Cultural, and Economic Environments in Determining Employment Opportunities for Vocational High School Graduates Utomo, Joko Budi; Haryanto, Sigit
Proceedings International Conference on Education Innovation and Social Science 2025: Proceedings International Conference on Education Innovation and Social Science
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study explores the role of social, cultural, and economic environments in determining employment opportunities for vocational high school graduates, with a case study at SMKN 1 Mondokan, Indonesia. Using a qualitative case study approach, data were collected through indepth interviews, participant observation, and documentation involving students, alumni, teachers, parents, and industry partners. The results show that the social environment, particularly family support, teacher guidance, and peer influence plays a significant role in shaping graduates' readiness and access to employment. Culturally, local values, societal norms, and school work culture influence graduates' career perceptions and decisions, often creating tension between vocational ideals and traditional community expectations. Economically, the financial condition of graduates' families and the limited availability of local job opportunities significantly impact employment outcomes. Many graduates are compelled to work outside their area of expertise due to economic pressures or the lack of industry-aligned opportunities. Furthermore, although the school has implemented vocational programs such as internships, teaching factories, and entrepreneurship education, collaboration with industry remains inconsistent and fragmented. The study concludes that enhancing employment prospects for vocational graduates requires a systemic integration of educational institutions, industry partnerships, family involvement, and culturally adaptive career guidance. The findings contribute to strengthening the link between vocational education and the labor market, especially in semi-rural settings.
Co-Authors Aldila Syariz, Muhammad Sigit Haryanto Sopaheluwakan, Ardhasena Yuli Handoko, Eko