Journal of Social Research

Feasibility Test of The Design and Content of The Hibiscus sabdariffa L.–Based Rosella Dessert Delight E-Flipbook at Yani Catering and Wedding Decoration

2026-07-30T15:51:00+00:00

This research and development (R&D) project aims to test and analyze the design feasibility and content suitability of the Rosella Dessert Delight E-Flipbook through expert validators. Conducted at Yani Catering and Wedding Decoration from February to April 2025, this study employs a 3D model development approach (define, design, develop) with six main stages: preliminary survey, design using Canva, product design, validation, refinement, and result description. Research subjects included one media expert, two material experts, one chef, and 25 E-flipbook users. Data collection utilized validity testing analyzed using quantitative descriptive methods. The validity test for media and content produced an Aiken's V score of 0.617 (high category). Expert validation results showed media expert scored 90% (very high), subject matter expert 1 scored 72.5% (high), and subject matter expert 2 scored 82.5% (very high), with an overall average of 81.67% (very high). The ease-of-use and usefulness validation by 25 users achieved an Aiken's V score of 0.648 (high category) with an average percentage of 84.80% (very high). Reliability testing yielded Cronbach's Alpha values of 0.730 for expert validators and 0.790 for ease-of-use/usefulness (reliable category). Consequently, the Rosella Dessert Delight E-Flipbook is declared highly feasible and reliable for use as a digital operational guide in the food service industry, providing accessible, interactive, and paperless standard operating procedures that minimize operational errors and enhance workflow efficiency.

The Dynamics of Community-Based Madrasah Diniyah Education: A Case Study of Madrasah Diniyah Darul Hikmah in Kwangkalan Neighborhood, Tempurejo Village, Pesantren Subdistrict

2026-07-27T06:55:44+00:00

This research examines the dynamics of community-based Islamic education at Madrasah Diniyah Darul Hikmah in Kwangkalan Village, Tempurejo. The purpose of this research is to understand how the educational system of the Madrasah Diniyah is implemented and how community participation supports the sustainability of the institution. This research employs a descriptive qualitative approach with data collection techniques including interviews, observations, and documentation. Data analysis uses the Miles and Huberman model, which consists of data reduction, data display, and conclusion drawing. The results of the study show that the learning process still focuses on basic Islamic subjects such as the Qur’an, fiqh, theology (tauhid), and morals (akhlaq), using teaching methods such as lectures, memorization, worship practices, and sorogan. Nevertheless, the sustainability of the Madrasah Diniyah is maintained due to strong community support, although several challenges remain, including curriculum development, limited facilities and infrastructure, as well as the need to improve teacher competence and institutional management.

Multi-Frequency Source Wavelet Analysis on Pinch-Out Structure Model: The Comparison Between 45 HZ and Broadband Frequency

2026-08-01T04:39:50+00:00

Thin-bed and pinch-out structures remain among the most challenging geological features to interpret accurately using conventional seismic reflection methods because wavelet interference alters reflection amplitude, waveform characteristics, and apparent layer thickness. These limitations often reduce vertical resolution and introduce uncertainty in identifying stratigraphic boundaries and estimating reservoir geometry. This study aims to compare the seismic responses generated by a conventional 45 Hz Ricker wavelet and a broadband frequency wavelet in imaging a wedge-shaped pinch-out model, with particular emphasis on waveform characteristics, amplitude behavior, and tuning thickness. The research employed a forward seismic modeling approach by constructing a wedge model with layer thicknesses varying from 50 ms to 1 ms. Reflection coefficients derived from the model were convolved separately with a single-frequency 45 Hz Ricker wavelet and a broadband wavelet synthesized from frequencies ranging from 1 to 150 Hz. The resulting synthetic seismograms were analyzed using waveform comparison, amplitude variation with interface separation, apparent thickness evaluation, and the Rayleigh resolution criterion. The results demonstrate that the 45 Hz wavelet produces a distinct tuning thickness of approximately 9 ms, characterized by maximum constructive interference and pronounced amplitude extrema. In contrast, the broadband wavelet exhibits significantly improved vertical resolution, with only minor tuning effects occurring at approximately 2–1 ms, enabling clearer separation of closely spaced reflectors and a more accurate representation of wedge termination. These findings indicate that broadband frequency wavelets substantially reduce tuning-related ambiguity and provide superior imaging performance for thin-bed interpretation, thereby supporting more reliable seismic stratigraphic analysis and reservoir characterization.