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Rahmad Abdillah
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JL. MERANTI NO.8 LABUH BARU PEKANBARU
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Science, Technology, and Communication Journal
Published by Lembaga Studi Pendidikan and Rekayasa Alam Riau
ISSN : -     EISSN : 27748782     DOI : https://doi.org/10.59190/stc
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology
Sintechcom is a periodical publication that publishes scientific articles on research results in the fields of Basic Science, Engineering, and Telecommunications. Scopes of journal are: Chemistry and Chemical Engineering; Physics, Material Sciences, and Mechanical Engineering; Biology, Biological and Bio System Engineering; Food and Agriculture Engineering; Statistics and Mathematics; Computer Science and Computational Science; Earth Science and Engineering; Space Engineering; Electrical Engineering; Environmental Science and Soil Science; Telecommunication; Electronic and Optic Communication; Image Processing, Computer Vision and Pattern Recognition ; Energy Conservation and Renewable Energy; Information System and Artificial Intelligence.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol. 1 No. 2 (2021): SINTECHCOM Journal (February 2021)" : 5 Documents clear
Modeling of terahertz radiation absorption temperature distribution in biological tissue of a cattle using Simulink-MATLAB model Kurnia, Dewi; Hamdi, Muhammad; Muhammad, Juandi; Saktioto, Saktioto; Yupapin, Preecha; Abdullah, Hewa Yaseen
Science, Technology and Communication Journal Vol. 1 No. 2 (2021): SINTECHCOM Journal (February 2021)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v1i2.6

Abstract

Terahertz radiation (THz) has interesting and effective properties in the field of biomedical imaging techniques, this is because of its ability to interact easily, is not ionized, and does not damage biological tissue. The purpose of this study was to determine the effect of THz radiation power density on temperature distribution and heat production in bovine biological tissue consisting of skin, fat, and muscle using a modeling approach. This study uses biophysical computation techniques with the Simulink-MATLAB model in the 0.1 – 1 THz frequency range, 50 – 150 mW power, and 5 – 25 mW/mm3 power density. Temperature distribution modeling is carried out in two ways, namely with different power densities and variations in the circumference of the THz radiation source. The results showed that the higher the power density used, the greater the absorbed radiation energy with increasing temperature. This causes the temperature distribution in the biological tissue to be wider and the production of heat in the tissue will increase. The results of imaging analysis of temperature distribution to depth in bovine biological tissue, show that fat tissue has less heat production compared to other tissues. The comparison of experimental data and modeling results shows an error percentage of 1.09%.
Analysis of non-destructive testing ultrasonic signal for detection of disabled materials based on the Simulink-MATLAB Mathematica computation method Febrianti, Ade; Hamdi, Muhammad; Muhammad, Juandi
Science, Technology and Communication Journal Vol. 1 No. 2 (2021): SINTECHCOM Journal (February 2021)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v1i2.27

Abstract

In this paper, an ultrasonic non-destructive test (NDT-UT) has been carried out on steel using the Simulink-MATLAB Mathematica computation method. This study aims to analyze the NDT-UT output signal for material defect detection using secondary data as the first sample. The sample is then analyzed using the fast Fourier transform (FFT) method to produce a spectrum waveform and image thermography. It can be seen that there is a decrease in signal height from 1 a.u to 0.55 a.u. The first sample waveforms were used to analyze the second sample, third sample, and fourth sample, and all the samples had different defects. The results of the sample analysis are in the form of a thermographic image that shows the temperature level based on the distribution of red (R), green (G), and blue (B) images on the sample surface. The NDT-UT output signal produces a sinusoidal wave similar to the results of the Simulink-MATLAB modeling analysis on the initial input echoes and the back wall, with a percentage inequality of 10%. Then validated the sinusoidal signal from the NDT-UT which gave a percentage of inequality between 0% – 42%. More complex or irregular defects result in a larger percentage or vice versa.
Effect of holding time on optical structure properties of Ba(Zr0.5Ti0.5)O3 thin film using sol-gel method Hidayat, Taufiq; Dewi, Rahmi; Hamzah, Yanuar
Science, Technology and Communication Journal Vol. 1 No. 2 (2021): SINTECHCOM Journal (February 2021)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v1i2.28

Abstract

The ferroelectric thin film material of barium zirconium titanate (BZT) on the fluorine-doped tin oxide (FTO) glass substrate was successfully prepared using the sol-gel method. The purpose of this study was to determine the effect of crystal size on the variation of holding time. The lattice parameter data has a value of a = b of 3.918 Å and for c it is 4.01 Å. The results of this study indicate that the crystal structure of BZT is tetragonal because the lattice parameter has the same values a and b but not equal to c. To obtain the bandgap energy, a thin film plot method of Ba(Zr0.5Ti0.5)O3 was used at a temperature of 700°C with a holding time of 30 minutes, 1 hour, 1 hour 30 minutes, and 2 hours. The optical thin layer bandgap energy of Ba(Zr0.5Ti0.5)O3 was calculated using the Tauc plot. The absorbance values obtained were 3.277, 3.0654, 3.323, and 3.424 a.u. The maximum transmission (TM) occurs at 1 hour holding time which gives a percentage of TM1 44.477% and TM2 20.568%. While the 2 hour hold time gives a minimum transmission (Tm) of Tm1 10.859% and Tm2 7.759%, respectively.
Annual premium of life in insurance with uniform assumptions Aprijon, Aprijon
Science, Technology and Communication Journal Vol. 1 No. 2 (2021): SINTECHCOM Journal (February 2021)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v1i2.191

Abstract

This Study discusses life insurance for life with a uniform assumption method. The purpose of this study is to calculate the annual premium that must be paid by life insurance participants. This research was conducted at the General Insurance Group company, which is located on the street Arifin Ahmad, Pekanbaru City, Indonesia. To determine the annual life insurance premium, the interest rate and discount factor, initial lifetime annuity, single premium, and the annual premium. After doing the research, the results of the calculation of the annual premium for life insurance for life using uniform assumptions for each participant life insurance are different. The amount of annual life insurance premiums uses a uniform assumption that is smaller than the annual life insurance premiums obtained from insurance companies.
Prediction of rupiah exchange rate against Australian dollar using the Chen fuzzy time series method Rahmawati, Rahmawati; Rahma, Ade Novia; Septia, Wiwik
Science, Technology and Communication Journal Vol. 1 No. 2 (2021): SINTECHCOM Journal (February 2021)
Publisher : Lembaga Studi Pendidikan and Rekayasa Alam Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59190/stc.v1i2.192

Abstract

The exchange rate of the rupiah (IDR) to the Australian dollar is the price of one rupiah translated to the Australian dollar. Weakening or decreasing prices of the Rupiah to the Australian dollar are influenced by various factors, such as government policies and expectations. Therefore, the government or related parties must be careful in predicting the value of the rupiah exchange rate to the currency of the state, such as the Australian dollar. This report will discuss the prediction of the rupiah exchange rate to the Australian dollar for 223 days from December 2018 to July 2019 using the Chen fuzzy time series method. The results of this report are the prediction of the value of the exchange rate of the rupiah to the Australian dollar in December 2018 to July 2019 is be again in the interval 10,450 IDR to 10,920 IDR.

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