cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Khaerus Syahidi
Contact Email
khaerussyahidi@gmail.com
Phone
-
Journal Mail Official
khaerussyahidi@gmail.com
Editorial Address
-
Location
Kab. lombok timur,
Nusa tenggara barat
INDONESIA
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 419 Documents
 30   31   32   33   34 
Uji Instrumen Penguasaan Konsep Fisika Pada Pokok Bahasan Elastisitas Dan Hukum Hooke Yuliana, Yuliana; Zuhdi, Muhammad; Gunada, I Wayan; Taufik, Muhammad
Kappa Journal Vol 8 No 1 (2024): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.24874

Abstract

Penelitian ini bertujuan untuk mengetahui hasil uji instrumen penguasaan konsep fisika pada pokok bahasan elastisitas dan hukum Hooke. Metode penelitian yang digunakan adalah metode deskriptif. Populasi pada penelitian ini adalah instrumen penilaian penguasaan konsep fisika kelas XII MIPA di SMAN 1 Lembar. Adapun pengambilan sampel menggunakan teknik purpossive sampling dan dari empat kelas diperoleh peserta didik kelas XII MIPA 1. Teknik pengumpulan data menggunakan tes pilihan ganda sebanyak 30 soal untuk mengukur penguasaan konsep fisika peserta didik. Uji instrumen yang dilaksanakan yaitu uji validitas, uji reliabilitas, uji daya beda, dan uji tingkat kesurakaran. Berdasarkan hasil uji instrumen penguasaan konsep di SMAN 1 Lembar, diketahui bahwa untuk uji validitas dengan taraf signifikansi 5% diperoleh sebanyak 22 soal dalam kategori valid dan 8 soal dikategori tidak valid, untuk uji reliabilitas dengan taraf signifikansi 5% diperoleh 30 soal dalam kategori reliabel, untuk uji daya beda diperoleh 19 soal dalam kategori diterima, 4 soal dalam kategori diperbaiki dan 7 soal dalam kategori ditolak, untuk uji tingkat kesukaran diperoleh 14 soal dikategori mudah, 15 soal dikategori sedang dan 1 soal dikategori sukar.
The Effect of Time Repetition Variation on Brain MRI Imaging Quality On T2 Weighted Sequences Arsana Karang, Ade Rama Ditya; Sutapa, Gusti Ngurah; Dharma Negara, I Putu Surya
Kappa Journal Vol 8 No 1 (2024): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.24885

Abstract

Magnetic Resonance Imaging (MRI) is an imaging technique used to produce images of parts of the human body by utilizing a strong magnetic field. The examination that is often carried out is a brain examination. This research was conducted at Bali Mandara Hospital. To find out the condition of the brain, an MRI examination can be done. MRI can produce images known as sequences which produce T1 Weighted Image (T1WI), T2 Weighted Image (T2WI), resulting in visible images with different intensities. To obtain T2WI, the time echo (TE) and time repetition (TR) must be long to give the fat and water a chance to decay, so that the fat and water contrast can be visualized well. This research aims to determine the effect of TR variations on SNR values, and determine the best TR to produce good image values. To generate T2WI SNRs on brain MRI. This street vendor activity uses a Phillips 1.5 Tesla type MRI aircraft. Data collection was obtained from twenty patients with 3 variations of TR values starting from 3,500 ms, 5,500 ms and 7,500 ms by obtaining a total of 60 images. Evaluate tissue SNR values by measuring ROI directly on the MRI device. SNR value analysis was performed on cerebrospinal fluid (CSF) tissue, spinal cord. Sequentially the SNR values obtained were 174.24, 211.22 and 244.51 in the CSF tissue 78.53, 80.64 and 84.81 in the spinal cord tissue. This street vendor activity has shown the result that the longer the TR value is given, the SNR value will increase. This is because long TR values are able to evaluate networks in more slices and provide better noise signal values. The TR variation of 7,500 ms can produce the highest SNR value so that the resulting image is very good
Perancangan Alat Ukur Intensitas Cahaya menggunakan Sensor BH1750 Berbasis Mikrokontroler ATMega328P Bano, Tominikus Benyamin; Widagda, I Gusti Agung; Trisnawati, Ni Luh Putu; Wibawa, I Made Satriya; Putra, I Ketut; Sandi, I Nengah
Kappa Journal Vol 8 No 1 (2024): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.24917

Abstract

The design of a light intensity measuring instrument using the BH1750 sensor based on the ATMega328P microcontroller has been successfully created. The results of light intensity data are measured by using the BH1750 sensor which receives a data signal in the form of light intensity. In order to get results that are in accordance with the reference tool, the design of a light intensity measuring instrument by using the BH1750 sensor based on the ATmega328P microcontroller is carried out in the Electronics and Instrumentation Laboratory and Computing Laboratory, Physics Study Program, FMIPA, Udayana University, Jimbaran, Bali. Then the results of the design of tool and reference tool processed into graphical form and proven by employing a linear regression equation. The measurement results of light intensity are displayed on a 16x2 LCD. The test results of the design tool against the reference tool shown that the level of accuracy of the design tool is relatively high.
PENERAPAN PEMBELAJARAN IPA BERORIENTASI LITERASI SAINS BERBASIS STEM BAGI CALON GURU SD/MI Purbaningrum, Dwi; Ganjarjati, Nur Innayah; Darmawan, Muhammad Iman
Kappa Journal Vol 8 No 1 (2024): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.25048

Abstract

Penelitian ini merupakan penelitian deskriptif kualitatif. Penelitian ini bertujuan untuk mendeskripsikan penerapan pembelajaran IPA berorientasi literasi sains berbasis STEM bagi calon guru SD/MI. Indikator literasi saintifik yang digunakan menurut PISA dikelompokkan  menjadi 3  yaitu: menjelaskan  fenomena  secara  ilmiah,  merancang  dan mengevaluasi  penyelidikan  ilmiah,  serta  menafsirkan data dan bukti secara ilmiah.  STEM (Science, Technology, Engineering, and Mathematics) adalah sebuah pendekatan pembelajaran yang mengintegrasikan empat bidang ilmu tersebut dalam satu program. Berdasarkan hasil analisis penerapan pembelajaran IPA berorientasi literasi Sains berbasis STEM bagi calon guru SD/MI menunjukkan bahwa: pada aspek menjelaskan fenomena secara ilmiah sebesar 88,0 %. Aspek kedua yaitu merancang dan mengevaluasi penyelidikan ilmiah sebesar 86,7%. Pada aspek ketiga yaitu menafsirkan data dan bukti secara ilmiah sebesar 84,3 %. Secara hasil rata-rata didapatkan 86,3% dengan kategori Sangat Baik. Dengan demikian penerapan pembelajaran IPA berorientasi literasi Sains berbasis STEM dapat terlaksana dan mencapai aspek-aspek literasi sains dan komponen STEM dengan Sangat Baik
PERANCANGAN ALAT UKUR KELEMBABAN TANAH MENGGUNAKAN CAPACITIVE SOIL MOISTURE SENSOR BERBASIS ANDROID Tri Jaya Maghuna, Komang; Wibawa, I Made Satriya; Suardana, Putu; Widagda, I. G. A; Trisnawati, Ni Luh Putu; Kasmawan, I Gde Antha
Kappa Journal Vol 8 No 2 (2024): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.25122

Abstract

A soil moisture measuring instrument has been designed and created using an Android-based capacitive soil moisture sensor. The design of a soil moisture measuring instrument was made to understand how to design, how it works, and the results of calibration. The process of calibrating and applying the design tool is carried out by comparing the results of soil moisture measurements between the design tool and the reference tool. The calibration itself was carried out using black sand soil into which 0 ml, 10 ml, 30 ml, 50 ml and 70 ml of water were poured periodically. The reference tool used is the soil moisture meter pH tester VT05 with type ZD-05. Data collection is carried out by inserting a capacitive soil moisture sensor into the soil. There are five types of soil used during application, namely white sand soil, black sand soil, limestone soil, clay soil and humus soil. The results of calibration using linear regression between the design tool and the reference tool obtained a gradient value m of 0.9643, close to 1. The coefficient of determination value obtained during calibration was 0.9983, so the level oflinearity between the design tool and the reference tool was 99.83%. The results of applying linear regression between the design tool and the reference tool obtained a gradient value m of 1.0041, close to 1. The coefficient of determination () obtained when applying was 0.9982, so the level of linearity between the design tool and the reference tool was 99.82%. From the results of the calibration and application of the tool, it shows that the tool design has good validity (precise accuracy). 
IDENTIFIKASI STRUKTUR BAWAH PERMUKAAN BERDASARKAN DATA ANOMALI GRAVITASI DI PULAU LOMBOK Threza, Imelda; Baskoro, Winardi Tjahyo; Alit Pramarta, Ida Bagus; Sukarasa, I Ketut; Suardana, Putu; Supardi, I Wayan
Kappa Journal Vol 8 No 1 (2024): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.25139

Abstract

Abstract: Research on the identification of subsurface structures based on gravity anomaly data on Lombok Island. This research aims to create a map and determine the value of the complete Bouguer anomaly, regional anomaly, residual anomaly, subsurface density value and create a 2-D model of the subsurface structure. The data used is secondary data, namely satellite gravity anomaly data obtained from the topex website. Data processing in this research uses the gravity method. In this method, gravity correction will be carried out, making a complete bouguer anomaly map, conducting spectrum analysis, separating regional and residual anomalies using butterworth filters and forward modeling to obtain a 2-D model of the subsurface structure. The results of the complete bouger anomaly map are 10.2 to 297.1 mGal, regional anomalies 18.0 to 271.1 mGal and residual anomalies between (-52.9 to 32.4) mGal. The results of forward modeling show that the subsurface geological structure on Lombok Island has a density range between 1 to 2.9 g/cm3, so that from the range of rock density values it can be estimated that the subsurface structure of Lombok Island is divided into East Lombok consisting of Soil rocks (1 to 1.99 g/cm3), Lime Stone (2 to 2, 27 g/cm3), Andesite (2.4 to 2.63 g/cm3) and Basalt (2.71 to 2.99 g/cm3), for West Lombok consists of Lime Stone (2.08 to 2.6 g/cm3), Andesite (2, 68 to 2.77 g/cm3) and Basalt (2.85 to 2.99 g/cm3) and for Central Lombok consists of Andesite (2.41 to 2.72 g/cm3), Basalt (2.84 to 2.99 g/cm3).  
Pengembangan Lembar Kegiatan Peserta Didik (LKPD) Berbasis Struktur Kognitif Dan Kemampuan Metakognisi Siswa Anita; Sukadi, Eti; Liliawaty, Winny
Kappa Journal Vol 8 No 2 (2024): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.25168

Abstract

Penelitian ini dilakukan untuk menyusun lembar kegiatan peserta didik (LKPD) yang berbasis struktur kognitif dan kemampuan metakognisi. LKPD disusun untuk meningkatan kemampuan struktur kognitif peserta didik pada aspek struktur berfikir komparatif, struktur representasi simbolik, dan struktur penalaran logis serta kemampuan metakognisi peserta didik pada aspek planning (perencanaan), monitoring, reflection. Materi LKPD disesuaikan dengan standar kompetensi, yaitu menerapkan hukum-hukum fluida statis, merancang dan melakukan percobaan yang memanfaatkan sifat-sifat fluida statis.  Tahapan penelitian pengembangan ini sampai pada tahapan analisis dan mendesain.
Analisis Laju Dosis Radiasi di Area Ruang CT_Scan di Instalasi Radiologi RSU Bali Mandara Prameswari, Else Putri Ayu; Sutapa, Gusti Ngurah; Ayu Ratnawati, I Gusti Agung; Ratini, Ni Nyoman; Artawan, I Nengah; Trisnawati, Ni Luh Putu
Kappa Journal Vol 8 No 2 (2024): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.25211

Abstract

Research has been carried out on radiation dose rate analysis in the CT-SCAN area of the radiology room at RSU Mandara Bali. The data used in this research is quantitative data observed from the radiation rate from the CT-SCAN aircraft. This study aims to determine the radiation dose rate in the radiology area and its rationalization based on regulations regarding radiation NBD (dose limit values) that apply to occupational safety and health. The research data is the actual radiation dose rate determined from the dose rate and calibration factors. The results of data calculations show that the highest dose rates are respectively at T2, 30 cm, 50 cm and 100 cm (door) with values of 1.95, 0.94 and 0.05 μSv/year, while the lowest dose rates are respectively at T4, 30 cm, 50 cm and 100 cm (waiting room) with values of 0.08, 0.06 and 0.05 μSv/year. The research results show that the dose rate at each measurement point is still considered safe for radiation workers where the NBD received is still below 20 μSv/year, while the dose rate is classified as safe for the general public at measuring distances of 50 cm and 100 cm, where the NBD received is below 1 μSv/year assuming the community concerned acts as a patient or patient's family with an interest in the radiology room area.
Identifikasi Citra Radiografi Sinar-X Pemeriksaan Thorax Untuk Penderita Covid-19 Di Instalasi Radiologi RSUP Prof. I. G. N. G Ngoerah Sutapa, Gusti Ngurah; Hanzani, Asril; Sudarsana, Wayan Balik; Ratini, Ni Nyoman; Trisnawati, Ni Luh Putu; Baskoro, Winardi Tjahyo
Kappa Journal Vol 8 No 2 (2024): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i2.25290

Abstract

Coronavirus Desease 2019 (Covid-19) merupakan penyakit menular yang disebabkan oleh virus Sars-Cov-2. Gejala yang ditimbulkan antara lain demam, batuk kering, dan sesak napas. Berbagai upaya penanganan dan pencegahan dilakukan oleh tenaga medis di Indonesia. Salah satu rumah sakit yang ikut andil menangani hal tersebut adalah RSUP Prof. Dr. I. G. N. G Ngoerah yang ada di Provinsi Bali menggunakan pemeriksaan thorax dengan pesawat sinar-X (rontgen). Penelitian ini dilakukan dengan menggunakan data sekunder yaitu 30 data pasien non-Covid-19 dan 30 data pasien Covid-19 di RSUP Prof. Dr. I. G. N. G Ngoerah pada tahun 2020 sampai dengan tahun 2022 dengan membandingkan hasil citra pasien secara kualitatif dari pembacaan dokter radiolog dan secara kuantitatif dilihat dari nilaia Efekti Dose (ED) dan Indeks Exsposure (IE). Dari hasil citra, pasien covid-19 menunjukkan adanya bercak-bercak putih pada bagian paru-paru dan dari hasil pembacaan dokter rata-rata pasien covid-19 mengalami pneumonia atau peradangan pada paru-paru sedangkan pada pasien non-covid-19 tidak mengalami pneumonia. Secara kuantitatif rata-rata nilai ED pada pasien non-covid-19 lebih besar dibandingkan pada pasien covid-19. Secara berturut-turut yaitu 0,1267±0,00653 mSv dengan nilai minimum 0,0694 serta nilai maximum 0,214 dan 0.0914±0,0311 mSv minimum 0,0096 serta maximum 0,706.  namun nilai IE pada pasien covid-19 lebih besar dibandingkan dengan pasien non-covid-19, yaitu 267,3±9,059 mSv dengan nilai minimum 202 mSv dan maximum 396,1 mSv. Sedangkan pasien non-Covid-19 besar nilai minimum 129 mSv dan maximum 172,9 mSv dengan rata-rata 146,467±2,45 mSv, dengan persentase perbandingan yaitu 35%:65%. Untuk menunjang terhadap perbedaan yang terjadi maka dilakukan uji statistik menggunakan T-test statistik nonparametric. Syarat signifikansi Asimp.Sig<0,05 menunjukkan perbedaan yang signifikan antara IE pasien non-Covid-19 dengan IE pasien Covid-19. Sehingga hasil statistik juga mendukung terhadap hasil pembacaan IE pada citra radiografi bahwa terjadi perbedaan yang signifikan antara nilai IE pada citra radiografi pasien non-Covid-19 dengan pasien Covid-19.
Pengembangan Media TESBOM (Teka-Teki Silang Blanded Of Matter) Berbasis Digital Web Untuk Meningkatkan Hasil Belajar Siswa Muatan IPAS Pada Kelas V SD Kusuma, Radhisya Adristi; Khamdun, Khamdun; Riswari, Lovika Ardana
Kappa Journal Vol 8 No 1 (2024): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i1.25315

Abstract

Abstract: This research carries out using digital web-based TESBOM (blended of matter crossword) media on human breathing material which aims to test the effectiveness of digital web-based TESBOM media in improving student learning outcomes for science content in class V of SD N 4 Kedungcino. The digital web-based TESBOM media developed is an educational game media that is integrated with digital web technology and also IPAS content material. The development method used in this research is the ADDIE R&D model development method. The instruments used were pretest questions and posttest questions given to class V students at SD N 4 Kedungcino. The results of the media expert validity test are in the very appropriate category with an average of 93.25%. The results of the material expert validity test are in the very appropriate category with an average of 87.5%. The normality test of the pretest results obtained a significance (sig) of 0.143 > 0.05, while the posttest results obtained a significance (sig) of 0.106 > 0.05 so it can be said that the data distribution was normally distributed. The results of the N-Gain test obtained an increase in the average score of 0.5932 in the moderate category and in the quite decent category. Based on the results of the average score on the N-Gain test in this research, it can be concluded that the development of digital web-based TESBOM media can be used as a learning medium to improve student learning outcomes. Keywords: TESBOM, Digital Web, Learning Outcomes, IPAS.

Page 32 of 42 | Total Record : 419

 30   31   32   33   34 

Filter by Year

2017 2026


Reset
Filter By Issues
All Issue Vol 10 No 1 (2026): April (In Press) Vol 9 No 2 (2025): Agustus Vol 9 No 1 (2025): April Vol 8 No 3 (2024): Desember Vol 8 No 2 (2024): Agustus Vol 8 No 1 (2024): April Vol 7 No 3 (2023): Desember Vol 7 No 2 (2023): Agustus Vol 7 No 1 (2023): April Vol 6 No 2 (2022): Desember Vol 6 No 1 (2022): Juni Vol 5 No 2 (2021): Desember Vol 5 No 1 (2021): Juni Vol 4 No 2 (2020): Desember VOL 4, NO 1 (2020): KAPPA JOURNAL Vol 4 No 1 (2020): Juni Vol 3, No 2 (2019): KAPPA JOURNAL Vol 3 No 2 (2019): Desember Vol 3, No 1 (2019): KAPPA JOURNAL Vol 3 No 1 (2019): Juni Vol 2 No 2 (2018): Desember Vol 2, No 2 (2018): KAPPA JOURNAL Vol 2, No 1 (2018): KAPPA JOURNAL Vol 2, No 1 (2018): KAPPA JOURNAL Vol 2 No 1 (2018): Juni Vol 1 No 2 (2017): Kappa Journal Vol 1, No 2 (2017): KAPPA JOURNAL Vol 1, No 1 (2017): Kappa Journal Vol 1, No 1 (2017): Kappa Journal Vol 1 No 1 (2017): Juni More Issue