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Time in Physics: Journal for Theoretical, Instrumentation, Material-Molecular, and Education Physics
Published by Universitas Mandiri Bina Prestasi
ISSN : -     EISSN : 29862760     DOI : https://doi.org/10.11594/timeinphys
Core Subject : Science, Education,
Education Mathematics Physics
Time in Physics: Journal for Theoretical, Instrumentation, Material-Molecular, and Education Physics is a peer-reviewed journal that is published by Universitas Mandiri and managed by the Department of Physics, Faculty of Science, Universitas Mandiri. TIME in Physics is published periodically second times a year in January and August. TIME in Physics provides immediate open access to its content to all readers. The journal is designed to serve academicians, researchers, developers, professionals, and others interested in physics. The articles in TIME in Physics included research and developments in Theoretical Physics, Instrumentation Physics, Material-Molecular Physics, and Physics Education.
Arjuna Subject : Fisika dan Astronomi - Instrumentasi
Articles 31 Documents
 1   2   3   4 
Object Tracking Based on Camera Using Anfis and Fuzzy Classifier for RGB Color Iqbal Robiyana; Timbo Faritcan Parlaungan; Sarifudin; Suhendra, Muhamad Agung
TIME in Physics Vol. 1 No. 2 (2023): August
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2023.v1i2p85-91

Abstract

Image processing technology has a wide range of applications, such as in the medical, military, surveillance, and robotics industries. Analyzing objects in images is crucial when it comes to image processing. This study focuses on image processing to track objects of red, green, and blue (RGB) colors through the utilization of a camera. There are two research schemes: image processing and data classification. The data classification method used is the fuzzy and adaptive neuro-fuzzy inference system (ANFIS). The methods of image subtracting and region properties are commonly utilized for image processing. Based on the classification data results, the fuzzy logic classification demonstrated a higher accuracy rate of 86% when compared to Anfis' 65%. This was observed when both classification models were tested using a random sample. The value of Anfis is small due to the limited size of the training data used. As a result, it is recommended to use a fuzzy classifier for object color tracking for good performance.
Study of Adsorption Kinetics of Fe Metal in Batik Cual Waste using Chitosan of Rice Crab Shells Fadillah Ramadhani; Widodo Budi Kurniawan; Aldila, Herman
TIME in Physics Vol. 1 No. 2 (2023): August
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2023.v1i2p93-100

Abstract

Chitosan from freshwater crab (Parathelphusa convexa) shell has been successfully extracted and its kinetic adsorption models for iron (Fe) metal ions in the batik cual waste solution (BCWs) were studied. Freshwater crab chitosan (FwC-Chi) was extracted via demineralization, deproteinization, decolorization, and deacetylation steps. The deacetylation degree value of FwC-Chi was 97.92% determined through FTIR spectra using the baseline method. In this study, iron metal ions distributed in the BCWs homogeneously with the concentration of iron (Fe) was 0.43 mg/L determined by atomic absorption spectroscopy (AAS). The performance of FwC-Chi adsorption on iron in the BCWs with the ratio of 1:100 (w/v) for various contact times of 30, 60, 90, 120, 150, 180, 210, and 240 minutes respectively while stirring homogeneously at room temperature. The result showed that the adsorption kinetic models for iron metal ion in the BCWs follows Behnajady-Modirshahla-Ghanbery (BMG) and pseudo-second-order kinetic model. Based on this model we found that the decrease of iron concentration is indicated by the decolorization of the waste color. It’s clear that there is a relationship between the waste color with the concentration of iron metal in the BCWs. The coefficient of decolorization decay, rate of decolorization and adsorption rate coefficient was 1,366 g-1, 16,053 g min-1, and 0,043 g mg-1 min-1 respectively achieved based on this model.
Juergen's Model Approach to the Manufacturing Process for Th(3.77xz+DSr(1.77yz)) Nano Materials at 688.12 MHz per Tesla in a French CERN Cyclotron for Formation of a New Nuclear Fuels 1.09 TeV Moh. Hardiyanto; Ermawati, Imas Ratna; Nathalia Gabiola Ganotti
TIME in Physics Vol. 2 No. 1 (2024): March
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i1p50-59

Abstract

Continuous experiments carried out by the International Research Team in the Nano Materials Manufacturing Division which is a sub research of the ALICE Project were carried out at the Betha Group CERN, Lyon, France, an experimental project, one of which aims to determine the type and durability of nuclear nano materials based on Thorium Differentiation Hybrid Matrix based on nuclear hybrid Th (3.77) pairwise sub atomic Muon-Hadron particles with respect to the longitudinal angle function (xz) Deuterium Srontium (DSr) multi group tensoris (1.77yz) for an experimental series in a 687.12 MHz per tesla powering on Super-Gyro Magnetic field, in a series of super magnetic panels of the CERN Cyclotron coil in France with a quantum plasmatic frequency ranging from 901.44 MeV to 1.09 TeV with an azimuth angle range of 31.58 degrees cosine factor and 42.11 degrees tangential vectoric factor. The type of nano material that has undergone a series of verification tests based on the Juergen’s Model at its quantum polarization of 314.55 tesla per currie succeeded in producing the type Th(3.77xz+DSr(1.77yz)) with the breakthrough effect of Kaon atomic sub particles through the Josephson approximation. The multi level quantum plasmatic graduation has succeeded in achieving a sub atomic Electrical Conductivity (EC) value of 1.089 currie per MHz, so that it can be continued as the basis for the formation of new nuclear fuels with a power of 1.09 TeV at various angles of the CERN Cyclotron, in particular 39.72 degrees tensoris per MHz per azimuth.
Pemanfaatan Data Satelit Himawari-8 Dalam Analisa Kejadian Hujan Lebat Di Jombang Tanggal 1-2 Februari 2021 Sulistiyono, Wahyu; Tuna, Miranda Sahfira; Ramadhan, Shandy Alhaq
TIME in Physics Vol. 2 No. 1 (2024): March
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i1p31-40

Abstract

The occurrence of a flood in the Jombang area on February 2, 2021, caused damage to 38 houses and public facilities. Flood events are caused by high-intensity rain produced by cumulonimbus clouds. Analysis of the development of convective clouds is needed to see the microphysics stage of rain-producing clouds. In this study, the analysis of convective clouds and atmospheric conditions was carried out using the Himawari-8 Satellite. Processing is carried out using the RGB Day Convective Storm, 24H-Microphysics, Airmass, and Cloud Convective Overlay methods. Based on the results of the study, it is known that the convective cloud microphysics phase occurs in 2 phases with different times on the 1st and 2. In the cloud top temperature analysis, during the Cb cloud development phase, the cloud top temperature is in the value range of -20 to -60 0C. Based on Airmass imagery, it is observed that convective cloud clusters originate from the waters of the Java Sea and the South Sea. The peak phase of cloud formation occurs at 12.00 UTC on February 1 and 2. Convective cloud formation increases when the updraft value strengthens and the intensity of cloud thickness increases. Meanwhile, the decay phase is marked by a higher downdraft value and a decrease in cloud distribution based on Day Convective Storm and 24H-Microphysics images.
Pengaruh Pendekatan Pembelajaran Inkuiri Terbimbing Terhadap Hasil Belajar Fisika Peserta Didik Kelas X SMA Negeri 9 Makassar Wahid, Syamsul
TIME in Physics Vol. 2 No. 1 (2024): March
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i1p23-30

Abstract

This research was done to know: (1) The physics achievement of 10th grade students in senior high school 9 Makassar that taught by Guided inquiry learning approach. (2) The physics achievement of 10th grade students in senior high school 9 Makassar that taught by conventional teaching approach. (3) The differences of physics achievement in senior high school 9 Makassar between the students that taught by guided inquiry learning approach and the students that taught by conventional teaching approach. This research is a real experiment that uses Posttest Only Control Design. The population in this research is the students of class 10th in Senior High School 9 Makassar. Based on the descriptive analysis showed that the average score of physics achievement of students that taught using guided inquiry approach is27.03 and its deviation standard is 3.32 while the average score of physics achievement that taught without a guided inquiry earning approach is 25.62 and its deviation standard is 3.28. The results of inferential analysis showed that there is a difference between physics achievement of students that taught by guided inquiry approach to learning and the students that taught without guided inquiry learning approach with the real level α = 0.05.
Exploring Celestial Object Characteristics: An In-depth Analysis of Quasars, Stars, and White Dwarfs Using the Sloan Digital Sky Survey (SDSS) Dataset Siagian, Ruben Cornelius; Nurahman, Arip; Sinaga, Goldberd Harmuda Duva; Ariefka, Reza; Pribadi, Pandu
TIME in Physics Vol. 2 No. 1 (2024): March
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i1p1-16

Abstract

This research utilizes the Sloan Digital Sky Survey (SDSS) dataset, examining 12,884 observations to explore quasars, stars, and white dwarf objects. Magnitude data and coordinates across five filter bands are analyzed, revealing unique features through statistical methods. The identification of 77,429 quasars with 15 dimensions enhances the dataset. Thorough analyses of stellar and white dwarf classes, coupled with visualization techniques, unveil variable relationships. Residual validation and Gaussian kernel density plots confirm significant class differences. Non-linear regression and a normal distribution mixture model depict complex variable relationships. A parallel coordinates plot aids in interpreting data patterns, while predictive modeling via regression exposes meaningful coefficients. Logistic regression effectively classifies astronomical objects in the SDSS training data. This research contributes to understanding celestial object characteristics, offering valuable insights for astronomers and astrophysicists in analyzing large-scale astronomical datasets.
PENGEMBANGAN ALAT PERAGA PEMBELAJARAN BERBASIS TEKNOLOGI MURAH MATERI RADIASI KALOR DAN TEKANAN HIDROSTATIK Dewi, Siska; Hakim, Lucky Maulana
TIME in Physics Vol. 2 No. 1 (2024): March
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i1p17-22

Abstract

This study aims to develop low-cost technology-based learning aids in physics, specifically on heat radiation, using Student Worksheets (LKS). The Suyanto method of research and instructional media development was employed, including internal testing and variance similarity testing of the learning aids. The results consist of physics learning aids and LKS that have been internally validated, in line with theoretical expectations. The LKS validation yielded a score of 3.14, indicating suitability for use, while the external test using a One-Shot Case Study showed a student learning outcome score of 3.61, signifying good learning quality. Assessment of the appeal of the learning aids and LKS yielded a score of 3.32, and ease of use scored 3.17, indicating positive reception. Improvements were made before the production stage, which only involved prototyping.
Kajian Fluktuasi Sifat Dielektrik Telur Puyuh yang Bervariasi pada Lama Penyimpanan Irawan, Bagus; Maddu, Akhiruddin; Rustami, Erus; Sulaeman, Ahmad Sofyan; Putro, Permono Adi
TIME in Physics Vol. 2 No. 1 (2024): March
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i1p41-49

Abstract

An increasing of public attention to the quality of food has been increasing, recently. One type of food that consumed is quail eggs (QE). In this study, QE were tested by Electrochemical Impedance Spectroscopy (EIS) method with some parameters such as complex impedance, dielectric constant, and loss tangent analysis. Several interesting results showed that dielectric properties of QE experience a fluctuation phenomenon if the test is influenced by storage duration, qualitatively. Therefore, we approximately prove that QE quality can be tested via EIS to obtain fine results.
Analysis of Needs for Facilities and Infrastructure in the Physics Learning Media Laboratory at Muhammadiyah University Prof. Dr HAMKA Fahira, Adinda Permata; Ermawati, Imas Ratna; Sugianto
TIME in Physics Vol. 2 No. 2 (2024): September
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i2p60-65

Abstract

Laboratories in lectures are very important in equipping students to study physics concepts, physics learning media laboratories can be a means for students to learn more about interesting and interactive physics learning tools and media. In this research, researchers used a quantitative survey research method with data collection techniques used in the form of non-tests and the tools used were questionnaires. Based on the results of the analysis using winsteps software, I8 (item number 8), I23 (item number 23) and I15 (item number 15) are not suitable because they do not meet the existing criteria, namely Outfit ZSTD (Z-Standardized Values), when viewed from Outfit MNSQ (Mean Square Values) and PT Measure-CORR (Point Measure Correlation) all items can be said to be valid. Based on the data obtained, it can be said that respondents answered according to the criteria. Therefore, the laboratory facilities and infrastructure of Prof. Dr. Hamka Muhammadiyah University meet the criteria. Cronbach's alpha with a score of 0.79 shows good results so that the item is said to be reliable. The person reliability value displays a score of 0.78 and the item reliability value displays a score of 0.88. The value of person reliability shows that the consistency of answers from students is "high", while the value of item reliability shows a value that is "high". So it can be said that the quality of the items used is very reliable.
A Force Field Simulation Approach to Analyze the Molecular Structure Stability of Cyanidin-3-Glucoside Using Avogadro: A Preliminary Study Putro, Permono Adi; Wulandari, Desi; Wulandari, Devia Putri; Nurfaidah, Fitriah; Ahdan, M Farid; Chaerunnisa, Seviana; Octaviani, Vina Umaya
TIME in Physics Vol. 2 No. 2 (2024): September
Publisher : Universitas Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/timeinphys.2024.v2i2p66-76

Abstract

Cyanidin-3-glucoside (C3G) is a flavonoid compound that is an antioxidant and natural colorant widely found in berries and vegetables such as red cabbage. This study aims to explore the structural stability of C3G using computer simulations based on force field theory through Avogadro software. In this study, the Universal Force Field (UFF), Merck Molecular Force Field (MMFF94), and General Amber Force Field (GAFF) methods were used to analyze the stability of C3G. The energy optimization results showed that the Ghemical method produced a more stable structure than other methods, although there was a discrepancy with GAFF. The GAFF method was more stable than UFF, but required more energy to achieve stability. Overall, the difference in force field methods affected the molecule's stability through optimization energy and structure parameterization variations, which affected the distance and angle of atomic bonds. These findings provide an efficient picture of the stable conformation of C3G, which can be applied in the food, health, and cosmetic industries.

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