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All Journal Tadris: Jurnal keguruan dan Ilmu Tarbiyah Indonesian Physical Review
Leonardy, Joshu
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Education Physics

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DESIGN AND CHARACTERIZATION OF A SIMPLE TEMPERATURE SENSOR BASED ON A POLYMER SINE S-BEND OPTICAL WAVEGUIDE STRUCTURE Yulianti, Ian; Hidayah, Rizki Roqissatul; Leonardy, Joshu; Fianti, Fianti; Sunarno, Sunarno; W. P, Wasi Sakti; Utomo, Galih R.; Prayogo, Defrian; Mufatihah, Nishfa
Indonesian Physical Review Vol. 8 No. 3 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i3.511

Abstract

This study presents the design, fabrication, and performance evaluation of a sine S-bend embedded square-core optical waveguide for temperature sensing applications. The waveguide was fabricated using a straightforward and cost-effective CNC milling technique, with PMMA as the cladding and unsaturated polyester resin (UPR) as the core material. Three different bend heights (0.5 cm, 0.6 cm, and 0.7 cm) were investigated to assess their effects on sensor sensitivity, response time, accuracy, and hysteresis. Results showed that increasing the bend height enhanced the sensor sensitivity, with the highest sensitivity of 0.0283 dB/°C achieved at a bend height of 0.7 cm. The response time was consistently maintained at approximately 40 seconds across all samples. The sensor exhibited excellent accuracy, reaching up to 99.31% at a bend height of 0.5 cm. The maximum hysteresis observed was 0.202 % at a bend height of 0.7 cm, indicating stable performance during thermal cycling. These results confirm that the integration of a sine S-bend structure, smooth core surface, and precise waveguide dimensions can significantly improve sensor performance while maintaining a simple and scalable fabrication process.
Digital Technology Use, Digital Skills, and Civic Engagement in Pancasila Education Among Junior High School Students Rahmawati; Darmawan, Cecep; Mariyani; Leonardy, Joshu; Putri, Dwi Asri Ananda; Fujianti, Aulia; Rezika, Amiza
Tadris: Jurnal Keguruan dan Ilmu Tarbiyah Vol 11 No 3 (2026): Tadris: Jurnal Keguruan dan Ilmu Tarbiyah
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/tadris.v11i3.31053

Abstract

Digital technologies increasingly mediate adolescents’ access to information, discussion, and civic action, but greater technology exposure does not necessarily translate into stronger civic engagement. This cross-sectional study examined how four dimensions of digital technology use in and around Pancasila Education—e-learning use, digital citizenship application, device-use frequency, and digital tools use—were associated with civic engagement among 222 students in Grades VII–IX at one public junior high school in Bandung, Indonesia. Digital skills were examined as both a direct correlate and a potential moderator. Data were collected using a 23-item four-point questionnaire and analyzed with partial least squares structural equation modeling (PLS-SEM). The measurement model showed strong indicator loadings (.898–.944), average variance extracted (.837–.873), composite reliability (.949–.969), and HTMT ratios below .85. In the direct-effects model, all four technology-use dimensions were positively associated with civic engagement (R² = .708), with device-use frequency showing the largest standardized coefficient (β = .425, p < .001). Digital skills also showed a positive direct association with civic engagement (β = .252, p < .001). Among four planned interaction tests, only device-use frequency × digital skills was nominally significant (β = .080, p = .038; f² = .024), but the interaction did not survive Bonferroni or Benjamini–Hochberg correction. The findings support robust direct associations while providing no confirmatory evidence that digital skills systematically moderate these relationships. The study therefore supports civically purposeful technology use and explicit digital-skills development while cautioning against causal interpretations of device exposure.
Co-Authors Cecep Darmawan Fianti Fianti, Fianti Fujianti, Aulia Hidayah, Rizki Roqissatul Ian Yulianti, Ian Mariyani Mufatihah, Nishfa Prayogo, Defrian Putri, Dwi Asri Ananda Rahmawati Rezika, Amiza Sunarno Utomo, Galih R. W. P, Wasi Sakti