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The Segmentation of Neutron Digital Radiography Image through the Edge Detection Method Ayu Fitri Amalia; Widodo Budhi
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 10 No. 1 (2020)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v10n1.p11-21

The digital image processing is one way to manipulate one or more digital images. Image segmentation has an essential role in the field of image analysis. The aim of this study was to develop an application to perform digital image processing of neutron digital radiographic images, hoping to improve the image quality of the digital images produced. The quality of edge detection could be used for the introduction of neutron digital radiographic image patterns through artificial intelligence. Interaction of neutrons with the matter mainly by nuclear reaction, elastic, and inelastic scattering. A neutron can quickly enter into a nucleus of an atom and cause a reaction. It is because a neutron has no charge. Neutrons can be used for digital imaging due to high-resolution information from deep layers of the material. The attenuated neutron beam in neutron radiography are passing through the investigated object. The object in a uniform neutron beam is irradiated to obtain an image neutron. The technique used in segmenting the neutron radiography in this study was a digital technique using a camera with a charge-coupled device (CCD), which was deemed more efficient technique compared to the conventional one. Through this technique, images could be displayed directly on the monitor without going through the film washing process. Edge detection methods were implemented in the algorithm program. It was the first step to complement the image information where edges characterize object boundaries. It is useful for the process of segmenting and identifying objects in neutron digital radiography images. The edge detection methods used in this study were Sobel, Prewitt, Canny, and Laplacian of Gaussian. According to the results of the image that have been tested for edge detection, the best image was carried out by the Canny operator because the method is more explicit. The obtained edges were more connected than the other methods which are still broken. The Canny technique provided edge gradient orientation which resulted in a proper localization.

EFEKTIVITAS E-MODUL IPA 2 TERHADAP PEMAHAMAN KONSEP MAHASISWA Susanti Susanti; Tias Ernawati; Ayu Fitri Amalia
Jurnal IPA Terpadu Vol 6, No 2 (2022)
Publisher : Jurnal IPA Terpadu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/ipaterpadu.v6i2.34037

Pembelajaran di masa pandemi covid-19 menjadi tantangan besar dalam dunia pendidikan. Kegiatan pembelajaran di masa pandemi covid-19 tetap dilaksanakan secara daring menggunakan tiga ruang belajar yang menjadi roh, yaitu sinkron virtual (virtual synchronus), asinkron mandiri (self-directed asynchronus), dan asinkron kolaboratif (collaborative asynchronus). Proses pembelajaran daring harus didukung dengan sarana dan prasarana yang memadai. Salah satu sarana pembelajarannya adalah sumber belajar. Sumber belajar yang dapat memfasilitasi kegiatan pembelajaran daring adalah modul yang dikemas dalam bentuk digital atau e-modul. Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan e-modul IPA 2 terhadap pemahaman konsep mahasiswa. Penelitian ini merupakan penelitian kuasi eksperimen dengan subjek penelitian mahasiswa semester 4 yang mengambil mata kuliah IPA 2 pada semester Genap Tahun Akademik 2020/2021. Instrumen penelitian adalah tes pemahaman konsep berupa soal uraian yang diberikan sebelum dan sesudah pembelajaran. Analisis data hasil penelitian menggunakan N-Gain untuk mencari efektivitas produk. Hasil analisis menggunakan N-Gain diperoleh persentase 77,46% dengan taraf sugnifikansi 0,000. Sehingga dapat disimpulkan e-modul IPA 2 efektif untuk meningkatkan pemahaman konsep mahasiswa.

Pengembangan E-Modul Fisika Materi Gelombang dan Bunyi berbasis Local Wisdom Alat Musik Gamelan pada Mata kuliah Fisika Dasar Sony Yunior Erlangga; Susanti; ayu fitri amalia
COMPTON: Jurnal Ilmiah Pendidikan Fisika Vol 9 No 1 (2022): COMPTON: Jurnal Ilmiah Pendidikan Fisika
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstrak Penelitian ini bertujuan untuk menghasilkan produk Modul Fisika Berdasarkan Kearifan Lokal Gamelan tentang Gelombang dan Bunyi. Produk ini akan diimplementasikan ke kelas setelah melalui penilaian ahli. Modul fisika Berbasis Kearifan Lokal Gamelan merupakan produk yang terintegrasi dengan kearifan lokal Gamelan. Produk ini dirancang untuk menggabungkan kearifan lokal dengan konsep fisika, sehingga siswa dapat memahami lingkungan sekitar secara ilmiah. Dengan demikian, siswa dapat menerapkan konsep sains yang diterima di universitas dalam kehidupan sehari-hari. Pengembangan desain yang digunakan dalam penelitian ini adalah model pengembangan 4-D. Hasil validasi di review memperoleh skor V’Aiken 1 maka dapat dikatakan produk valid. Dapat disimpulkan bahwa modul yang dikembangkan memenuhi persyaratan kelayakan sebagai bahan ajar.

Mathematical Model Simulation of Non-Linear Equations using MATLAB: Specific Volume of Gas with Van der Waals Equation Ayu Fitri Amalia; Widodo Budhi; Asih Melati; Urip Nurwijayanto Prabowo
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 11, No 2 (2022): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v11i2.12546

Computational physics is concerned with the application of numerical methods in solving physical problems. The van der Waals gas model is one of the most common non-linear models. This study simulated a mathematical model of a non-linear equation using MatLab for the case of the specific volume of gas in the equation of the state of van der Waals. This study aimed to determine the molar volume and compressibility factor, as well as describe the relationship between the compressibility factor and the reduced pressure. The method of the study is experimental. The independent variables are the reduced pressure and temperature values. The dependent variable is the determination of the value of the molar volume (V) and the compressibility factor (Z). The control variable, in the form of a function used in solving this case, is based on van der Waals equation with the gas used is ammonia. The fzero command can be used to solve f(x)=0 with a single variable. This program that has been running successfully can show various predictions in the form of reduction pressure, thus obtaining the values of the molar volume and compressibility factor using the ideal gas equation. There is a deviation in ammonia gas, the Z1 at high reduction pressures and Z1 at medium pressures. This study can provide contributions and benefits in the form of material enrichment of thermodynamics to understand how real gases behave. The ideal gas equation can be modified into the van der Waals equation.

Pengembangan LKPD IPA Berbasis Value Clarification Untuk Meningkatkan Karakter Peserta Didik Hastyarini Krisnawati; Astuti Wijayanti; Ayu Fitri Amalia
N A T U R A L: Jurnal Ilmiah Pendidikan IPA Vol 8 No 1 (2021)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/natural.v8i1.8654

This study aims for knowing process developing students worksheet based on value clarification which is decent used to improve character of Junior High School grade VIII students. The study type was research and development (R&D) of 4D (Define, Design, Develop dan Disseminate) model which is restricted untill develop stage. The techniques of collecting data used observatins, questionnaires, and interviews. Quality value data obtained then analyzed used qualitative and quantitative descriptive analysis based on ideal assesment. The students worksheet meet the criteria aspects of suitability of the goal, content eligibility, completeness of the material, presentation of material, student worksheet based on value clarification components, suitability of activities, clarity of instructions, language and sentence eligibility, text clarity and layout quality. Based on expert judgment is known that worksheet student which was developed had very good quality with ideal percentage by media expert 91%, percentage assesment by material epert 87,78%, percentage assesment by peer reviewer 95,16%, percentage assesment by natural science teacher 83,03% and percentage respon by students 86,48%. Based on that assesment, student worksheet based on value clarification for Junior High School grade VIII students is suitable for use in natural science learning.

Mathematical Model Simulation of Non-Linear Equations using MATLAB: Specific Volume of Gas with Van der Waals Equation Ayu Fitri Amalia; Widodo Budhi; Asih Melati; Urip Nurwijayanto Prabowo
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 11, No 2 (2022): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v11i2.12546

Computational physics is concerned with the application of numerical methods in solving physical problems. The van der Waals gas model is one of the most common non-linear models. This study simulated a mathematical model of a non-linear equation using MatLab for the case of the specific volume of gas in the equation of the state of van der Waals. This study aimed to determine the molar volume and compressibility factor, as well as describe the relationship between the compressibility factor and the reduced pressure. The method of the study is experimental. The independent variables are the reduced pressure and temperature values. The dependent variable is the determination of the value of the molar volume (V) and the compressibility factor (Z). The control variable, in the form of a function used in solving this case, is based on van der Waals equation with the gas used is ammonia. The fzero command can be used to solve f(x)=0 with a single variable. This program that has been running successfully can show various predictions in the form of reduction pressure, thus obtaining the values of the molar volume and compressibility factor using the ideal gas equation. There is a deviation in ammonia gas, the Z>1 at high reduction pressures and Z<1 at medium pressures. This study can provide contributions and benefits in the form of material enrichment of thermodynamics to understand how real gases behave. The ideal gas equation can be modified into the van der Waals equation.

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