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Kappa Journal
Published by Universitas Hamzanwadi
ISSN : -     EISSN : 25492950     DOI : -
Core Subject : Science, Education,
Astronomy Physics Other
Kappa Journal (e-ISSN 2549-2950) mempublikasikan artikel hasil-hasil penelitian fisika, inovasi pembelajaran fisika, dan pemikiran-pemikiran kritis tentang fisika maupun pendidikan fisika. Kappa Journal diterbitkan oleh Universitas Hamzanwadi dua kali setahun yakni setiap bulan Juni dan Desember.
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Articles 21 Documents
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Search results for , issue "Vol 7 No 1 (2023): April" : 21 Documents clear
Analysis of Solar Flux and Sunspot Correlation Case Study: A Statistical Perspective Siagian, Ruben Cornelius; Alfaris, Lulut; Nasution, Budiman; Nasution, Habibi Azka
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.12238

Abstract

This analysis examines the relationship between the number of solar flares and the number of sunspots in 2005 using 11 observations in months 2 to 12. The number of solar currents measures the intensity of the radiation emitted by the Sun, while the number of sunspots measures the number of sunspots on the surface of the Sun. Multivariate linear regression analysis was used to analyze the relationship between Solar Current Rate and Number of Sunspots. The results of the analysis show that the coefficient of the Amount of Solar Current is 1.1239 with a significant t value of 2.510 (probability that there is no effect on the Number of Sunspots is 3.33%). The linear regression model has good results with an F-statistic value of 6.301 and a p-value of 0.0333, with an R-squared value of 0.4118 which indicates that 41.18% of the variation in the number of sunspots is influenced by variations in the amount of solar currents. The corrected R-squared value is 0.3464 indicating that there are still variations in the number of sunspots that cannot be explained by variations in the number of solar currents. ARIMA analysis results show an MA coefficient of 0.7351 with an average value of 45.9542 and a s.e value of 0.2590 and 6.1550 respectively. The AIC, AICc, and BIC values are 92.97, 96.4, and 94.16. The error results in the training set show that the ME value is 0.2615561, the RMSE value is 12.16969, the MAE value is 9.03306, the MPE value is -15.14689, the MAPE value is 30.42013, and the MASE value is 0.674109. The ACF1 value in the exercise set is 0.0808969.
Pengembangan Video Interaktif Model Brain Based Learning untuk Meningkatkan Motivasi Belajar pada Materi Hukum Newton Wulandari, Novita; Diyana, Tsania Nur
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.7677

Abstract

Motivasi belajar dapat mempengaruhi keberhasilan proses pembelajaran fisika. Salah satu upaya untuk meningkatkan motivasi belajar siswa yaitu dengan mengembangkan media pembelajaran yang kreatif, inovatif, dan sesuai dengan perkembangan masa kini. Penelitian ini bertujuan untuk mengembangkan video interaktif dengan model brain based learning yang memenuhi kriteria kelayakan untuk digunakan dalam pembelajaran fisika. Pengembangan video interaktif dalam penelitian ini dikhususkan untuk materi Hukum Newton dengan mengintegrasikan kearifan lokal berupa permainan nekeran. Jenis penelitian yang digunakan, yaitu Research and Development dengan model ADDIE (Analyze, Design, Development, Implementation, and Evaluation). Pengumpulan data dilakukan dengan uji kelayakan yang dilakukan oleh dua validator ahli. Adapun teknik analisis data pada penelitian ini dihitung menggunakan rata-rata skor hasil validasi dan dikategorikan berdasarkan acuan kriteria kelayakan skala empat. Hasil kelayakan secara keseluruhan menunjukkan rata-rata skor 3,5 dan hasil rata-rata reliabilitas 87%. Sehingga, dapat disimpulkan bahwa video interaktif dengan model brain based learning terintegrasi kearifan lokal termasuk layak digunakan sebagai media pembelajaran fisika dalam meningkatkan motivasi belajar.
The Effectiveness of Problem-Based Learning Model In Improving Critical Thinking Skills in Science Learning: a Meta-Analysis Busyairi, Ahmad; Kusuma, Anindita SHM
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.15886

Abstract

This study aims to determine the effectiveness of the problem-based learning (PBL) model in improving students' critical thinking skills in science learning. A meta-analysis study was carried out in this study by analyzing 30 scientific articles resulting from previous studies. The selected scientific articles have criteria namely; (1) articles that discuss the effect of applying the PBL model on critical thinking skills in learning science (physics and biology) (2) articles from national and international journals with research locations in Indonesia (3) journals published within the last five years. The data in this study were analyzed by calculating the average effect size from several previous studies and then categorized using the criteria set by Cohen's. The results of data analysis showed that the average effect size for physics subjects was 1.08 while for biology subjects it was 1.06. It can be concluded that the PBL model is effectively used to improve students' critical thinking skills in learning science (physics and biology) with a level of effectiveness in the high category.
Estimasi Dosis Serap dengan Metode Size Specific Dose Estimation (SSDE) dan Risiko Radiasi pada Pemeriksaan CT-Scan Kepala di Rumah Sakit Daerah Mangusada Kabupaten Badung Saputra, Eka; Sutapa, Gusti Ngurah; Paranditayana, I Nyoman
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.12985

Abstract

CT scan -Scan Those originating from X-rays on the head are very risky considering that the tissue in the brain has a greater sensitivity to ionizing radiation when compared to other organs in the human body. Problems will then arise when the use of CT-Scan sourced from X-rays can pose a radiation risk. Based on research conducted by Mathews et al. (2013) reported that at least 680,211 patients who had performed CT-Scan, 3,150 patients were diagnosed with cancer. There is a more accurate method in estimating the dose received by patients, namely using the SSDE. The dose estimation method using SSDE considers geometric factors (body size). The purpose of this study was to see how weight, gender, and age affect SSDE, using 80 patients classified into 4 age groups (children, adults, elderly, and seniors). The results showed that the average effective dose for children was 4.065 mSv for males and 3.706 mSv for females with a significant effect of weight, sex, and age on SSDE because theFCount as big4,640    FTableof 2.215
Pengembangan Kafah Learning Model untuk Meningkatkan Pemahaman Konsep Fluida Dinamis A, Syahrial; Rokhmat, Joni; Ramdani, Agus; Hakim, Aliefman
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.15149

Abstract

This study aims to develop the Kafah Learning Model as an alternative to making learning meaningful. The research design uses a 4D model, namely define, design, develop, and disseminate. The Kafah Learning Model for Science developed is Dynamic Fluid Concepts (Airplane Lift). The data was collected with meaningful learning questionnaires and kafah concept understanding tests. The testing stage is the stage of knowing the influence of the Kafah Learning Model on understanding concepts in a kafah manner and knowing the meaningful learning response of prospective teachers. The increase in understanding of the concept is calculated based on the N-Gain and paired t-test.  The results showed that the Kafah Learning Model for Dynamic Fluid Concepts (Airplane Lift) which was developed was valid and reliable, worthy of use in meaningful learning and influential in increasing the understanding of science concepts in kafah.
Kompetensi Abad 21 Sebagai Bekal Menghadapi Tantangan Masa Depan Asri, Indra Himayatul; Lasmawan, I Wayan; Suharta, I Gusti Putu
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.12999

Abstract

Indeed, the world of education and learning develops with the changing times. Life in the 21st century demands various skills that must be mastered by a person, so it is hoped that education can prepare students to master these various skills in order to become successful individuals in life. In the 21st century, learning is not only cognitive-centered and students only memorize but in the era of the industrial revolution 4.0 students are required to be able to compete with other countries through creative thinking skills, critical thinking and problem solving (critical thinking and problem solving). problem solving), communicate (communication), and collaborate (collaboration) or commonly referred to as 4C. competencies that must be possessed by students must of course be able to adapt to the development of the 21st century so that with these competencies they will be able to answer all challenges in the future. Important skills in the 21st century are still relevant to the four pillars of life which include learning to know, learning to do, learning to be and learning to live together. Each of these four principles contains specific skills that need to be empowered in learning activities, such as critical thinking skills, problem solving, metacognition, communication skills, collaboration, innovation and creation, information literacy, and various other skills.
Efek Variasi Arus Waktu Terhadap Dosis Efektif Radiasi Lensa Mata Pada Penggunaan Bismuth Shielding Pada CT-Scan Kepala Sihaloho, Monika Lestari; Sandi, Nengah; Bunawas, Bunawas; Irhas, Rozi
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.15995

Abstract

A study has been carried out to determine the effect of time current variation on the effective dose of eye lens radiation on head CT scans. The aim of this study was to determine the effect of changing the flow of time on the effective dose of eye lens radiation and to determine the reduction in the effective dose of eye lens radiation when using bismuth shielding. The tools used are CT-scan, head mannequin, thermoliminescence dosimeter (TLD) calcium sulfate CaSO4;Dy, and bismuth shielding. The method used in this study uses the calculation of the effective dose of the 100 kV calibration curve from NuclindoLab and the equivalent dose. The measurement results show an average of each current of 31.540 mSv 100 mAs 43.947 mSv 150 mSv 59.808 msv 200 mAs 64.747 mSv 250 mAs, 137.083 mSv 300 mAs without bismuth and using bismuth 26.883 mSv 100 mAs 100 mAs, 27.847 mSv 27.84 mSv 200 mAs, 50.430 mSv 250 mAs, 81.334 mSv 300 mAs. Based on the results obtained, it is known that the effective dose obtained in the eye lens without bismuth is 67.42 ± 39.41 mSv and using bismuth is 48.85 ± 22.43 mSv with a dose reduction of 27%. As for efforts to reduce the dose received, it must be done by paying attention to the parameter settings on the CT-Scan examination such as voltage, current, slice thinkness, pitch and the use of protective equipment such as bismuth shielding.
Fungsi Gelombang Pseudospin Simetri Untuk Potensial Rosen Morse Plus Coulomb Like Tensor Untuk Variasi q Dengan Menggunakan Metode Polymial Romanovski Hidayatulloh, Alpiana; Zaidah, Alpi
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.11022

Abstract

This study aims to determine the wave function of the Dirac equation of the Rosen Morse potential plus the coulomb type tensor potential for the pseudospin symmetry case using the Polynomial Romanovski method.Solving Dirac's equation using Romanovski polynomials is done by reducing the second-order differential equation to a hypergeometric type equation through variable substitution and the appropriate wave function. By comparing the second order differential equation of the hypergeometric type with the standard differential equation for the Romanovski polynomial, the relativistic energy equation and wave function are obtained. The symmetrical pseudospin wave function for the Rosen Morse potential is obtained from the weight function and expressed in Romanovski polynomial form.
Pengaruh Suhu Terhadap Crosswind dan Tailwind di Bandara I Gusti Ngurah Rai Dengan Metode Regresi Nurhalima, Nurhalima; Sukarasa, I Ketut; Sumaja, Kadek
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.17606

Abstract

A study of the effect of runway surface temperature (LST) and sea surface temperature (SST) on crosswind and tailwind in 2012-2021 at Ngurah Rai Airport in Bali has been carried out using the regression method. The purpose of this study was to find out what percentage of LST and SST affect crosswind and tailwind events and how LST and SST influence crosswind and tailwind events at I Gusti Ngurah Rai Airport. Based on the results of monthly calculations from 2012-2021, the influence of LST and SST on crosswind and tailwind only has an effect of 0.8-47.7%. Where the greatest influence occurred in the crosswind from the right plane in May, which was 47.7%. Meanwhile, the influence of LST and SST on the biggest tailwind occurred in November at 22.5%, with the overall percentage in all months showing that LST and SST have a weak relationship to crosswind or tailwind. The influence is quite strong only on the right crosswind in May and the left crosswind in March. However, the size of the influence of LST and SST must still be considered because there are several significant months, especially in the left crosswind and tailwind which can be seen in the results of the F-test. In the right crosswind and tailwind the effect of SST is greater than that of LST, while for the left crosswind it is the other way around.
Analisis Diagnostic Reference Level (DRL) Pasien Pada Pemeriksaan Abdomen Kontras dan Nonkontras Dengan Pesawat CT Scan Di RSUD Bali Mandara Br Ginting, Venesia Sesilia; Sutapa, Gusti Ngurah; Ratnawati, I Gusti Agung Ayu; Widiana, I Komang
Kappa Journal Vol 7 No 1 (2023): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i1.18985

Abstract

In this study, data were obtained from 35 patients aged 27-76 years. The current used varies from 46-185 mAs and a constant tube voltage of 130 kV, with different clinical symptoms. The patient's DRL value on contrast and non-contrast abdominal examination was determined by calculating the third quartile value. On non-contrast abdominal examination, the DRL CTDIvol value was 10.62 mGy and the DLP DRL was 607.76 mGy.cm and on the non-contrast abdominal examination, the DRL CTDIvol value was 32.73 mGy and the DRL DLP value was 1825.10 mGy.cm. These results indicate that the DRL CTDI vol and DRL DLP values on contrast abdominal examination at Bali Mandara Hospital were still below the actor's limits set by BAPETEN, while on abdominal examination the DRL CTDI vol and DRL DLP values exceeded the limits set by BAPETEN. This is caused by exposure which is done three times. Therefore, it is necessary to restore both the Patient Operational Standards (SOP) and the exposure factor on an abdominal contrast CT scan at Bali Mandara Hospital.

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