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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 419 Documents
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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.
Pengembangan Lembar Kerja Peserta Didik (LKPD) IPA Berbasis Nilai Karakter Alwi, Mijhamuddin; Suastra, Wayan; Ariana, Ida Bagus
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.13001

Abstract

This study aims at developing teaching materials for Student Worksheets (LKPD) Based on Character Values for fifth graders of SDN 1 Darmasari in the Academic Year 2022/2023. This research is development research with a 4D development model in stages which is simplified into 3 stages, namely, defining, designing, and developing. This research was conducted in the fifth grade of elementary school with 32 students. This development instrument uses validation sheets, and student response questionnaires. The results of the validation of material and language experts with a total score of 58 which are included in the score range of X> 50 in the "very good" category. Meanwhile, the display expert gets a score of 29 which is included in the range X> 25 with the "very good" category. And the results of the student response questionnaire on the effectiveness of the use of teaching materials (LKPD) developed got an average score of 68, which is included in the score range X> 63 with the "very good" category. So, it can be concluded that the development of teaching materials (LKPD) based on character values in science subject in fifth grade of SDN 1 Darmasari is very good and effective for use by students in the learning process.
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.
Pengembangan Media Pembelajaran Teknologi Drone untuk Pengukuran Jarak Berbasis Arduino Terakusisi dengan Smartphone di Ground Control Pramuda, Adi; Angraeni, Lia; Hadiati, Soka
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.14206

Abstract

Pengembangan media pembelajaran teknologi drone berbasis Arduino menggunakan sensor ultrasonik pada materi Gerak Lurus dapat membantu dalam mengajar dengan menggunakan media pembelajaran pada materi gerak lurus. Model penelitian yang akan dikembangkan menggunakan model pengembangan yang dikemukakan oleh Borg and Gall yang memiliki 10 tahapan penelitian, namun pada penelitian ini hanya menggunakan 7 tahapan penelitian. Penelitian ini menguji kelayakan media pembelajaran dari 1 validator ahli media dan 1 validator ahli materi. Selain itu, penelitian ini juga melihat respon siswa dari 17 siswa terhadap media yang dikembangkan menggunakan angket. Hasil penelitian menunjukkan bahwa pengembangan media pembelajaran teknologi drone berbasis Arduino menggunakan sensor ultrasonik pada materi Gerak Lurus dikatakan sangat cocok digunakan dalam proses pembelajaran. Kelayakan media pembelajaran menurut ahli materi mendapat nilai rata-rata 90% dengan kategori “Sangat Layak”. Hasil validasi ahli media diperoleh nilai rata-rata 90% dengan kategori “Sangat Layak”. Berdasarkan uji coba kepada siswa, rata-rata nilai respon siswa sebesar 89% dengan kategori “Sangat Baik”.
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.
Program Dekonvolusi Blind Berbasis Matlab untuk Mempertajam Citra Akibat Simulasi Efek Buram Lensa Zuhdi, Muhammad; Busyairi, Ahmad
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.v7i1.20281

Abstract

Blurred image due to lens defocus can be simulated mathematically as a convolution result between sharp image and Point Spread Function of blur (unfocus) lens. Image sharpening is the opposite of image blurring which can be done by deconvolution. This research was conducted to simulate digital image sharpening using the Blind deconvolution method. The Point Spread Function of the lens effect is used as the deconvolution Kernel function. This Point Spread Function is modeled mathematically with the Gaussian function approach. Convolution results between digital images from photos of an object are convoluted with the point spread function to produce a blurry image. The blurry image is then sharpened using the Blind convolution method. The slight difference between the deconvolution result image and the original object photo image indicates that the program is running well. Peak Signal to Noise Ratio (PSNR) is used to determine image sharpening recovery. Optimal sharpening recovery from deconvolution iterations is obtained at the maximum PSNR value
Potensi Pembelajaran Berbasis Etnosains dalam Buku Ajar Kurikulum Merdeka IPA SMP Kelas VII Dinurrohmah, Syayidah; Sari, Greny Mispi Anisa; Wisutama, Remanda Arya; Sulaeman, Nurul Fitriyah; Nuryadin, Atin
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.12254

Abstract

The context of ethnoscience-based learning in the Merdeka curriculum is related to socio-cultural studies. Following up on the uncommon science learning integrated with ethnoscience studies, especially in the socio-cultural realm, a content analysis of textbooks used in schools was conducted. This study aims to determine the potential of junior high school science learning using the Merdeka curriculum integrated into ethnoscience studies in the socio-cultural aspect. The research was conducted using the content analysis method, with the analyzed indicators consisting of 5 parts of values in socio-cultural. The results showed that science learning has great potential to be integrated with ethnoscience studies, considering that the textbooks have been able to present all value indicators in the socio-cultural. All indicators have been contained in the book in each chapter, except for spiritual value incarcerates. The appearance of all indicators in each chapter in the book provides information on the suitability of textbooks with the aim of curriculum. However, spiritual value indicators are still contained in only 2 chapters in the book, so it is necessary to strengthen spiritual values in each chapter in the book. Further research can be done by conducting content analysis with a more diverse number of books, so as to provide a broader picture of textbooks
Kajian Pengembangan Pengisian Data Hujan yang Hilang dengan Data CHIRPS di Wilayah Bali Arsanti Aphrodita, Nerisa Fedria; Yuliara, I Made; Yuda, I Wayan Andi
Kappa Journal Vol 7 No 2 (2023): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v7i2.7709

Abstract

Research has been carried out related to the study of filling in missing rain data with CHIRPS data in the Bali Region. This study aims to determine the validation of daily and monthly CHIRPS rain data with observational data in the Bali region and to know the results of filling in observation rain data with corrected CHIRPS data. There are also differences in patterns between CHIRPS data and observational data that require data correction that was carried out using simple regression. This study shows that corrected CHIRPS shows RMSE and MBE valueshave lower error rates than CHIRPS without correction. As an example, the results of the calculation of data accuracy are shown by the RMSE and MBE values after being corrected which are better than CHIRPS before being corrected. For Sukasada rain post, the RMSE values before and after correction are 15.355 mm and 13.527 mm for daily data and 77.586 mm and 65.083 mm for monthly data, respectively. Meanwhile, the MBE values for the Sukasada rain post before and after correction were -0.875 mm and -0.017 mm for daily data and -27.142 mm and 0.005 mm for monthly data, respectively

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