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All Journal DIFFRACTION: Journal for Physics Education and Applied Physics Community Research Of Epidemiology (CORE)
Israwati, Wa Ode
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Earth & Planetary Sciences Environmental Science Health Professions Materials Science & Nanotechnology Physics Public Health Social Sciences

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Study of counseling effectiveness on bullying in students Handayani, Listy; Virdayanti, Fadya; Ramadhan, Jimip Selahri; Iwan, Putri; Israwati, Wa Ode; Riastami, Dilla Salsabilla S.; Rachma, Lula Nur
CORE JOURNAL Volume 5, Issue 1, December 2024
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/corejournal.vi.48785

Abstract

Bullying in the school is aggressive behavior carried out repeatedly by students or groups of students in power towards other students who are more vulnerable, with the aim of hurting them. Globally, it showed that 32% of students worldwide have been victims of bullying. The prevalence of bullying cases in Indonesia was 41%. Meanwhile, in Kendari City there is no specific data regarding bullying. This research aimed to determine the effectiveness of counseling in increasing students' knowledge about bullying in Kendari City. The type of study was pre-experimental with a one-group pre-test post-test design.  The sample size of 18 students were selected by accidental Sampling in Class XI. Data was collected with used pre-test and post-test questionnaires. Data was processed and analyzed by epi info 7 application. A non-parametric statistical analysis, wilcoxon test used to analyze the data. The study founded that there was an increase in students' level of knowledge before and after the counseling was carried out. The statistical test results showed a p-value of 0.0114 < α (0.05), meaning there was a significant difference between students' knowledge before and after the counseling. Thus, it can be concluded that counseling is effective in increasing students' knowledge about bullying. Therefore, this research can be input for schools to strengthen bullying prevention programs by carrying out regular anti-bullying counseling with interesting and interactive methods at all grade levels in school and develop an anti-bullying team at school consisting of (teachers, counselors and other school staff).      
Analisis Kuantitatif Model SEMF: Studi Perbandingan Terhadap Data Eksperimen Massa Nuklida Napirah, Mardiana; Alfat, Sayahdin; Naim, Naim; Abdin, Abdin; Israwati, Wa Ode; Zaldin, Zaldin
DIFFRACTION: Journal for Physics Education and Applied Physics Vol 7, No 2 (2025)
Publisher : Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/diffraction.v7i2.16712

Abstract

Semiempirical Mass Formula (SEMF) merupakan salah satu model teoretis yang digunakan untuk memperkirakan massa inti dan energi ikat nuklida. Meskipun sederhana, akurasi SEMF sangat bergantung pada nilai parameter yang digunakan. Penelitian ini bertujuan mengevaluasi kinerja beberapa set parameter SEMF dari literatur berbeda dalam memprediksi massa nuklida ringan stabil. Data eksperimen diambil dari Atomic Mass Evaluation (AME2020), sedangkan perhitungan teoretis dilakukan menggunakan SEMF dengan empat set parameter berbeda. Seluruh perhitungan dilakukan menggunakan Microsoft Excel 2021 dengan presisi bawaan double-precision, tanpa pembulatan manual maupun penggunaan makro, sehingga operasi aritmetika berlangsung konsisten melalui formula standar spreadsheet.  Hasil analisis menunjukkan adanya variasi akurasi antar model. Model IV memberikan performa terbaik dengan nilai MAE terkecil, yaitu 0,00199 u, yang konsisten dengan kecenderungan selisih massa dan error absolut yang lebih kecil. Temuan ini menunjukkan bahwa untuk nuklida ringan stabil pada rentang A = 1 hingga A = 55, model tanpa suku pairing justru menghasilkan prediksi massa yang lebih baik. Secara keseluruhan, penelitian ini menegaskan bahwa SEMF tetap relevan digunakan dalam studi massa nuklida, dan bahwa pembaruan atau reevaluasi parameter perlu dilakukan untuk memastikan ketepatan model dalam era data massa berpresisi tinggi.
Co-Authors Abdin Alfat, Sayahdin Handayani, Listy Iwan, Putri Mardiana Napirah Naim, Naim Rachma, Lula Nur Ramadhan, Jimip Selahri Riastami, Dilla Salsabilla S. Virdayanti, Fadya Zaldin, Zaldin