Article Per Year (5 Year)
p-Index From 2020 - 2025
0.562
P-Index
This Author published in this journals
All Journal JURNAL NASIONAL TEKNIK ELEKTRO UICELL Conference Proceeding
Rina Angraini
Politeknik Negeri Padang
Education Electrical & Electronics Engineering

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Incorporating Online Pictorial Images in Upgrading EFL Students in Understanding Specific Text Rina Angraini; Baharuddin Baharuddin
UICELL No 6 (2022): UICELL Conference Proceedings 2022
Publisher : Universitas Muhammadiyah Prof. DR. HAMKA

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

Abstract

Teaching EFL students is a daunting task. Based on the preliminary study, the EFL students had an insufficiency in understanding the meaning that had caused them to misinterpret in understanding the specific text. This study aims to investigate how the utilization of online pictorial images improves students’ accuracy on domain-specific knowledge and how it plays a role in developing students’ when dealing with specific text. Thus, it may create a suitable teaching method for the English for Telecommunication I course. First-semester students in the academic year 2022/2023 who enrolled in English for Telecommunication I course at Politeknik Negeri Padang participated in this study. The qualitative method is used to analyze the data generated through the interviews to present and identify the role of online pictorial images in upgrading students’ understanding of specific knowledge. The results uphold that using online pictorial images plays important role in upgrading students' understanding of the specific text.   Keywords: EFL, online pictorial images, specific text, teaching and learning process
The Design of Soil Temperature and Humidity Monitoring Systems with IoT-Based LoRa Technology Baharuddin; Akbar Alhaqi Hidayat; Hanalde Andre; Rina Angraini
JURNAL NASIONAL TEKNIK ELEKTRO Vol 11, No 3: November 2022
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v11n3.1074.2022

Abstract

Soil temperature and humidity are important factors in affecting the condition of agricultural sector, which has an impact on the quality and quantity of the production. Lack of information on the condition of agricultural soil is one of the causes in productivity deficiency in the process of agricultural cultivation. The application of technology in the field of agriculture is expected to be able to reduce various adverse effects of agricultural soil conditions. One of which is by periodic monitoring, such as the temperature and humidity of agricultural soil. This research aims to design LoRa technology to be used as a data transmission medium for monitoring soil temperature and humidity by applying a system that is based on the Blynk application, which will make the users easier to monitor the system remotely. The temperature sensor was able to acquire data with 98.37% accuracy and the soil humidity sensor was able to acquire data with 91.63% accuracy. The changes in LoRa transmission parameters for monitoring data have an effect on the quality of its performance. The experimental results with Bandwidth variation (BW) from 31.25 kHz, 62.50 kHz, 125 kHz, 250 kHz, and 500 kHz at a distance of 15m, the best SNR and RSSI values were obtained for BW 31.25 kHz with values of 5.42 dB and -104.90 dBm. Whereas, the best ToA is obtained with a BW of 500 kHz with a value of 27.50 ms. While, the experimental result with the variation of Coding Rate (CR) from CR 4/5, 4/6, 4/7, and 4/8 at a distance of 15m, the best SNR and RSSI values were obtained CR 4/8 with values of 4.10 dB and -106.40 dBm and he best ToA was obtained CR 4/5 with a value of 112.70 ms. In testing by using variation Spreading Factor (SF) from SF7, SF9, and SF12, the higher the SF value used, the wider the range of area data communication will be. Configuration SF7 and SF9 were only able to reach a distance of 25m, while SF12 was able to reach a distance of 35m.
The Effect of Using Array Technique on Semi-Circular Patch Microstrip Antenna with 2.4 GHz Frequency in Supporting Wireless Body Area Network Technology Baharuddin; Agung Bhaskara; Amirul Luthfi; Rina Angraini; Haniza Yazid
JURNAL NASIONAL TEKNIK ELEKTRO Vol 11, No 3: November 2022
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v11n3.1075.2022

Abstract

This paper aims to design a semi-circular patch microstrip antenna that can work at a frequency of 2.4 GHz (band 2360 MHz - 2400 MHz) to support Wireless Body Area Network technology (WBAN). One of the devices connected to WBAN technology is a Holter monitor and medical data recorder that forms a medical network for post-operative or monitoring ICU patients (Intensive Care Unit). To support one of the WBAN technologies, an antenna is needed that has considerable gain and bandwidth characteristics. To increase the gain and bandwidth, the array method is used on antennas with inset feed unification. The antenna design was simulated using CST Studio Suite 2019. The use of array methods on microstrip antennas can increase the gain by 132.9%, which is 5.73 dB. The simulation results obtained a return loss of -17.223 dB with a bandwidth of 88.3 MHz in the frequency range of 2357.6 MHz - 2445.9 MHz
Co-Authors Agung Bhaskara Akbar Alhaqi Hidayat Amirul Luthfi, Amirul Baharuddin Abbas, Baharuddin Hanalde Andre Haniza Yazid