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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.
Arjuna Subject : -
Articles 416 Documents
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Pemetaan Potensi Wilayah Bencana Longsor Menggunakan Aplikasi SIG (Sistem Informasi Geografi) di Kabupaten Lebak Fadila, Jihan; Ruhiat, Yayat; Haryadi, Rudi
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.29973

Abstract

Kabupaten Lebak merupakan daerah yang sering mengalami tanah longsor, dikarenakan keadaan morfologinya yang beragam di antaranya dataran, perbukitan curam dengan kemiringan <25% (landai, bergelombang, terjal), dan gunung/pengunungan. Kondisi geologi dan litologi curah hujan tahunan di Kabupaten Lebak cukup tinggi berkisar antara 2.000 - >4000 mm/tahun. Pada penelitian ini bertujuan untuk mengetahui apakah curah hujan, kemiringan lereng, jenis tanah, dan penggunaan lahan dapat mempengaruhi terjadinya wilayah bencana longsor serta pemetaan potensi wilayah longsor di Kabupaten Lebak, dengan melakukan pemetaan daerah mana saja yang termasuk kedalam tingkat bahaya bencana longsor dan menggunakan Sistem Informasi Geografis (SIG) untuk membuat peta menggunakan analisis spasial dengan metode skoring, pembobotan (Complete Mapping Analysis) dan Overlay. Peta rawanlongsor merupakan tumpang susun (overlay) antara peta curah hujan, kemiringan lereng, jenis tanah, dan penggunaan lahan. Kelas yang digunakan pada peta rawan longsor, diklasifikasikan menjadi 3 kelas diantaranya rendah, sedang, dan tinggi. Hasil yang diperoleh dari peta rawan longsor, yaitu tingkat kerawanan rendah dengan luas 65986.09 Ha (20.42%), tingkat kerawanan sedang dengan luas 245928.92 Ha (76,1%), dan tingkat kerawanan tinggi dengan luas 11262.20 Ha (3.48%).
Comparison of Seismicity Between the Subduction Zone and Local Fault Zone in the Bali Island Region During the 1963–2023 Period Using the Likelihood Method Nainggolan, Putri Srimalemta; Winardi Tjahyo Baskoro; I Gusti Ketut Satria Bunaga; I Ketut Sukarasa; Nyoman Wendri; I Ketut Putra
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.30243

Abstract

Research has been conducted on the comparison of seismicity between the subduction zone and the local fault zone in the Bali Island region during the 1963–2023 period. This research aims to compare the b-value, a-value, seismicity index, and earthquake recurrence period between the subduction zone and the local fault zone. The research was conducted within the observation boundaries of 114,4°–115,7° East Longitude and 11,4°–8,8° South Latitude. The research was carried out at the Center for Meteorology, Climatology, and Geophysics Region III Denpasar using the likelihood method for earthquakes with magnitude ≥ 3,3. The data used were obtained from the official websites of the USGS (United States Geological Survey) and BMKG, with depths ≤ 600 km for the subduction zone and depths ≤ 35 km for the local fault zone. The results show that the subduction zone has a b-value of 0,534 and an a-value of 4,599, while the local fault zone has a b-value of 0,829 and an a-value of 5,087. The seismicity index in the subduction zone ranges from 0,289–13,046 with an earthquake recurrence period of 0,077–3,459 years. Meanwhile, in the local fault zone, the seismicity index ranges from 0,126–8,366 with an earthquake recurrence period of 0,212–7,949 years. Earthquake distribution is dominated in the subduction zone at 82,63% compared to the local fault zone at 17,37%.
Time Dilation in Interstellar Missions: A Systematic Literature Review on Relativistic Effects and Technological Solutions Rara, Rara; Pertiwi, Nadiar; akhsan, Hamdi; Ariska, Melly
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.30399

Abstract

Interstellar exploration faces fundamental challenges due to the time dilation effects of Einstein's theory of relativity. This review presents a comprehensive analysis of the principle of time dilation, implications for interstellar missions, as well as cutting-edge technologies that utilize this principle. The Systematic Literature Review (SLR) method with PRISMA approach was applied, resulting in 42 relevant articles that met the inclusion criteria. The review results show that: (1) the effects of time dilation pose significant challenges in interstellar mission planning, particularly in the aspects of navigation, communication, and crew biology; (2) the development of cutting-edge technologies such as the Breakthrough Starshot relativistic vehicle, high-precision atomic clocks, and autonomous AI systems offer innovative solutions to overcome these challenges; (3) the integration of relativity understanding with these advanced technologies opens up new opportunities to realize interstellar exploration in the coming decades. These findings confirm that although time dilation is a major obstacle, the development of revolutionary technologies can turn it into a supporting factor in the realization of interstellar missions.
Pengembangan Awal Media Pembelajaran Fluida Dinamis Berbasis Construct 3 dengan Model 4D Wely Sandra; Ira Nofita Sari; Lia Angraeni
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.30435

Abstract

Pemahaman siswa terhadap konsep fluida dinamis masih rendah karena terbatasnya media visual interaktif yang dapat digunakan secara mandiri. Hal ini menghambat proses pembelajaran fisika yang menuntut kemampuan visualisasi dan eksplorasi konsep-konsep yang kompleks. Penelitian ini bertujuan untuk mengembangkan media pembelajaran interaktif berbasis Construct 3 pada materi fluida dinamis dengan menggunakan model pengembangan 4D yang dibatasi pada tahap Define dan Design. Metode yang digunakan adalah research and development (R&D) dengan pendekatan kualitatif deskriptif. Tahap Define meliputi analisis kurikulum, karakteristik peserta didik, dan materi pembelajaran, sedangkan tahap Design mencakup perancangan flowchart media, tampilan awal, aset visual, dan spesifikasi teknis awal media. Hasil penelitian menunjukkan bahwa desain media telah selesai sekitar 85%, mencakup seluruh flowchart interaksi, tampilan antarmuka utama, aset grafis dan audio, serta rancangan navigasi dan animasi dasar. pada tahap ini belum dilakukan uji kevalidan maupun kepraktisan, sehingga belum tersedia indikator keberhasilan secara kuantitatif. Kedepannya proses validasi akan melibatkan validator ahli materi dan ahli media dengan kriteria penilaian seperti kesesuaian konten dengan kurikulum, kejelasan penyampaian konsep, kualitas tampilan visual, navigasi, interaktivitas, serta kemudahan penggunaan oleh siswa. Media yang dikembangkan memiliki potensi besar dalam mendukung pembelajaran mandiri dan visualisasi konsep fisika yang kompleks. Media yang dikembangkan memiliki potensi besar dalam mendukung pembelajaran mandiri dan visualisasi konsep fisika yang kompleks. Selain itu, media ini sejalan dengan prinsip Kurikulum Merdeka karena memungkinkan diferensiasi pembelajaran dan mendorong kemandirian siswa. Implikasi praktis dari penelitian ini adalah memberikan dasar rancangan awal yang dapat digunakan sebagai pijakan untuk tahap pengembangan dan pengujian lebih lanjut, guna memperoleh media yang valid, praktis, dan efektif untuk digunakan dalam pembelajaran fisika di sekolah. Penelitian ini memberikan dasar yang kuat untuk pengembangan tahap selanjutnya agar media dapat diterapkan secara luas dalam pembelajaran fisika di sekolah.
Validity and Reliability Analysis of Science Modules Using Problem-Based Learning Models Based on Ethno-STEM Assisted by Augmented Reality Amanah, Prelia Dwi; Rahayu, Satutik; Gunawan, Gunawan
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.31825

Abstract

This study aims to analyze the validity and reliability of a Problem-Based Learning (PBL)-based science module integrated with the Ethno-STEM approach and assisted by Augmented Reality (AR) on the Motion and Force material for seventh-grade junior high school students. The module was developed as an innovative effort to improve the quality of science learning by linking local cultural contexts and the use of technology. The research method used includes validity and reliability testing involving seven expert validators, consisting of four lecturers and three science teachers, who assessed the feasibility of learning documents with five assessment scales, including the Learning Objective Flow (ATP), Learning Implementation Plan (RPP), Teaching Module, and Student Worksheet (LKPD). Validity was analyzed using Aiken's V formula, and the results of the analysis showed that all components obtained V values between 0.75 and 1.00, which was categorized as valid. Meanwhile, the inter-rater reliability test using the Intraclass Correlation Coefficient (ICC) showed an ICC value between 0.753 and 0.947. This indicates that the developed module has excellent inter-rater consistency and good to very good reliability. Therefore, this PBL-based science module, integrated with Ethno-STEM and AR, has been proven valid and reliable for use in the learning process at the junior high school level, making it a reliable learning resource.
Distribution of Radiation Doses Received by Organs at Risk in Cervical Cancer Using Intracavitary Brachytherapy Technique Anandika Putra, I Made Raditya; Sutapa, Gusti Ngurah; Kasmawan, I Gde Antha; Ratini, Ni Nyoman; Wibawa, I Made Satriya; Putra, I Ketut
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.29017

Abstract

A study entitled Distribution of Radiation Doses Received by Organs at Risk in Cervical Cancer Using Intracavitary Brachytherapy Technique has been conducted. The study was conducted at the Radiotherapy Sub-Installation of Prof. Dr. I.G.N.G Ngoerah Hospital with the aim of determining the distribution of doses received by High Risk Clinical Target Volume (D2cc) and Organs at Risk (D90). Determining the distribution of doses received by High Risk Clinical Target Volume (D2cc) and Organs at Risk (D90) in cervical cancer patients is still within the recommended limits in ICRU Report 89. This study used ionizing radiation by inserting radioactive cobalt-60 using internal radiotherapy techniques, namely intracavitary brachytherapy. Before the irradiation process is carried out, there is a planning stage or Treatment Planning System (TPS). The reference for this research standard is for HRCTV of 95% -107% and for OAR bladder ≤80% rectum ≤75%. The average percentage of dose distribution received by HRCTV was 104.2% which is equivalent to 7.2 Gy which is still within the range of 95%- 107%, in the bladder it was 69.4% which is equivalent to 5.Gy which is still below the value ≤80%, and in the rectum it was 57% which is equivalent to 4.1 Gy which is still below the value ≤75%. The dose distribution value in HRCTV and OAR was still within the tolerance limit listed in the recommended value in GEC-ESTRO-ABS, and ICRU Report 89.
Pengaruh Jenis Perekat Terhadap Karakteristik Briket Arang Kaliandra (Calliandra Calothyrsus) Hasan, Andika; Wulandari, Febriana Tri; Ningsih, Rima Vera
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.29351

Abstract

Nusa Tenggara Barat memiliki komitmen untuk menggunakan energi baru terbarukan untuk mewujudkan program Net Zero Emission 2050. Pemerintah provinsi NTB bekerjasama dengan Perusahaan Listrik Negara (PLN) untuk memenuhi kebutuhan energi dalam bentuk biomassa. Penelitian ini bertujuan untuk mengetahui karakteristik briket arang kali adra serta melihat bagaimana pengaruh jenis perekat yang digunakan terhadap karakteristik briket arang kaliandra. Penelitian ini menggunakan metode eksperimen, rancangan acak lengkap non faktorial dengan 2 jenis perekat. Hasil penelitian ini diketahui briket dengan perekat tapioka memiliki nilai rata-rata kadar air sebesar 2,78%, kerapatan 0,435g/cm3, kadar abu 2,54%, kadar zat terbang 3,61%, kadar karbon terikat 91,06%, dan nilai kalor 6268 kal/gram. Sedangkan briket dengan perekat molase memiliki nilai rata-rata kadar air sebesar 3,98%, kerapatan 0,606g/cm3, kadar abu 3,84%, kadar zat terbang 3,78%, kadar karbon terikat 88,40%, dan nilai kalor 5701 kal/gram. Parameter yang diteliti dalam penelitian ini sudah memenuhi SNI 01-6235-2000.
Analisis Dosis Serap pada Pemeriksaan Thorax Pasien Anak dengan Pesawat Sinar-X di Instalasi Radiologi RSUD Sanjiwani Gianyar Br Barus, Ema Vinesia; Ratini, Ni Nyoman; Trisnawati, Ni Luh Putu; Sandi, I Nengah; Wendri, Nyoman; Alit Paramarta, Ida Bagus
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.30101

Abstract

Telah dilakukan penelitian mengenai analisis dosis serap pada pemeriksaan thorax pasien anak dengan pesawat sinar-X di Instalasi Radiologi RSUD Sanjiwani Gianyar. Penelitian ini bertujuan untuk menganalisis dosis serap yang diterima oleh pasien anak pada pemeriksaan thorax serta membandingkannya dengan batas dosis yang direkomendasikan oleh United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). Penelitian ini dilakukan dengan metode kuantitatif menggunakan data sekunder dari hasil pemeriksaan thorax pasien anak berusia 1-15 tahun yang meliputi faktor eksposi (tegangan tabung, kuat arus, dan waktu eksposi). Data ini yang kemudian digunakan untuk menghitung dosis paparan dan dosis serap. Analisis statistik dilakukan dengan uji Kruskall-Wallis untuk menentukan signifikansi perbedaan dosis serap di RSUD Sanjiwani Gianyar dengan dosis serap yang ditetapkan oleh UNSCEAR. Hasil penelitian menunjukkan bahwa terdapat variasi dosis serap berdasarkan kelompok usia, di mana semakin tinggi usia pasien, semakin besar dosis serap yang diterima. Didapatkan dosis serap untuk kelompok usia 1-4 tahun yaitu:  mGy untuk pasien laki-laki dan  mGy untuk pasien perempuan. Untuk kelompok usia 5-9 tahun didapatkan sebesar mGy untuk pasien laki-laki dan  mGy untuk pasien perempuan. Sedangkan dosis serap kelompok usia 10-15 didapatkan sebesar  mGy untuk pasien laki-laki dan  mGy untuk pasien perempuan. Dosis serap yang diperoleh di RSUD Sanjiwani masih berada di bawah batas dosis maksimum yang ditetapkan oleh UNSCEAR yaitu: untuk kelompok usia 1-4 tahun sebesar 0,0300 mGy, kelompok usia 5-9 tahun sebesar 0,0400 mGy, dan kelompok usia 10-15 sebesar 0,0500 mGy.
Pengaruh Pendekatan Pembelajaran STEM terhadap Keterampilan Abad 21 di Educourse.id Arumningtyas, Hanum; Ilyas, Ilyas
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.30467

Abstract

Critical thinking skills are highly essential in the learning process, especially considering that critical thinking is one of the key skills being developed in the 21st century. This study aims to describe the influence of the STEM learning approach on 21st-century skills at Educourse.id. The method used is a quantitative method with a pre-experimental one-group pretest-posttest design. The population in this study consists of all Educourse.id course participants located in BSD Tangerang who participated in the STEM-based learning program during 2024, using purposive sampling technique. The results showed that there was a significant difference between the pre-test and post-test scores, with a significance result of 0.000, which is smaller than the alpha value of 0.05. The calculated t-value (-7.708) was less than the critical t-value (-2.35), leading to the decision to reject H0. This means that there is a significant difference between the pre-test and post-test scores.
Profil Keterampilan Komunikasi Ilmiah dengan Model Problem Based learning pada Materi Energi Terbarukan Agustina, Jumirta; Yuliani, Hadma; Suhartono, Suhartono
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.30560

Abstract

Twenty-first century learning requires students to possess scientific communication skills as an essential ability to understand and convey scientific concepts. However, these skills are still relatively low, so an appropriate learning model is needed. The purpose of this study was to examine the effect of implementing the Problem Based Learning (PBL) model on renewable energy content toward students’ scientific communication skills. This research employed a pre-experimental method with a one group pretest-posttest design involving 33 tenth-grade students at SMAN 5 Palangka Raya. The instruments used were essay questions and assessment rubrics, and the data were analyzed descriptively and with N-Gain. The results indicated an increase in the average score from 45.55 to 66.27 with an N-Gain value of 0.37, categorized as moderate. Although some indicators showed only slight improvement, overall the conclusion is that the PBL model is effective in enhancing students’ scientific communication skills on renewable energy material.

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