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International Journal of Applied Sciences and Smart Technologies
Published by Universitas Sanata Dharma
ISSN : 26558564     EISSN : 26859432     DOI : http://dx.doi.org/10.24071/ijasst
Core Subject : Science, Engineering,
Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering
International Journal of Applied Sciences and Smart Technologies (IJASST) is published by Faculty of Science and Technology, Sanata Dharma University Yogyakarta-Central Java-Indonesia. IJASST is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in engineering, science, technology, and basic sciences which relate to technology including applied mathematics, physics, and chemistry. IJASST accepts submission from all over the world, especially from Indonesia.
Arjuna Subject : Umum - Umum
Articles 14 Documents
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Search results for , issue "Volume 06, Issue 1, June 2024" : 14 Documents clear
Smart Control and Monitoring System for Closed Poultry House based on IoT Surateno, Surateno; Kautsar, Syamsiar; Rachmanita, Risse Entikaria; Anwaludin, Aan; Adhiyatma, M.; Hertawamati, Rosa Tri; Hariono, Budi; Purnomo, Fendik Eko; Sarena, Sryang Tera
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 1, June 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i1.7079

Abstract

The application of technology in the livestock sector has been carried out to increase the productivity of the livestock business. Closed chicken coops are one of the applications of technology in the livestock sector by utilizing a microcontroller that can control the temperature and ammonia levels in the coop under optimal conditions for fattening chickens. When the temperature rises (hot), the system set on the microcontroller will make the fan turn on automatically. This study aims to improve the offline and semi-manual fan control system in closed chicken coops to become automatic. By utilizing Internet of Things (IoT)-based technology, monitoring the condition of the chicken coop can be more easily accessed remotely. The method uses the if-then rule to regulate fan performance based on variable temperature and ammonia levels. The fan work set-point value can be set through the Android application online. Based on the test results, the IoT system treatment can work well. A consumer satisfaction survey was conducted on breeders with satisfactory results to ensure their feasibility as a commercial product.
Image Detection Analysis for Javanese Character Using YOLOv9 Models Suparwito, Hari
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 1, June 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i1.8779

Abstract

The Javanese script needs to be digitized to improve access and usage, especially among younger generations. Digitizing Javanese characters is crucial for preserving Javanese culture and traditions in the long term. This study aims to detect and recognize Javanese characters using the YOLOv9 algorithm, known for its ability to detect various object types, including Latin and non-Latin scripts. The dataset used consists of 85 images of complete Javanese script arranged in a 4x5 grid of different characters. The dataset was divided into a training dataset (75 images) and a validation dataset (10 images). All data pre-processing was done using Roboflow tools. Two experiments were conducted, varying the weights of the YOLOv9 algorithm model: YOLOv9-c and YOLOv9-c-converted. The research results showed that the YOLOv9-c model outperformed YOLOv9-c-converted, achieving a confidence level of over 80% and an mAP value of 0.95 in recognizing Javanese script images. In other words, the YOLOv9 model succeeded in detecting and recognizing Javanese scripts well
Response of Shoots from Porang Leaf Bulbs to Cytokinins and IAA in Shoot Multiplication In Vitro Erfa, Lisa; Maulida, Desi; Hamiranti, Rahmadyah; Ferziana, Ferziana; Yuriansyah, Yuriansyah; Safitri, Betari; Yeni, Yeni
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 1, June 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i1.7533

Abstract

The growth regulators in media have the potential to significantly influence the process of in vitro plant regeneration. The response of explants in forming shoots also depends on the type and the combination of growth regulators. This research aimed to identify the most optimal type and concentration of cytokinin for the multiplication of in vitro porang shoots. Additionally, it determined whether the addition of cytokinins should be accompanied by auxin/IAA for porang shoot multiplication. To achieve these objectives, a completely randomized design with six replications was employed, followed by a 5% BNJ. The tested treatments consisted of various combinations of growth regulators. Several observations were recorded, including the speed of explants forming prospective shoots/shoots (days), the age of the explants forming prospective shoots/shoots, the number of prospective shoots and shoots produced per explant, and shoot height (cm). The results showed that 1) Tdz 2 and IAA 0.5 mg.l-1 formed the highest shoots candidates and shoots in porang multiplication in vitro, and 2) the addition of BAP and Tdz 2 mg.l-1 should be combined with IAA 0.5 mg.l-1, while BAP and Tdz 3 mg.l-1 did not require IAA.
Misconceptions about Acceleration among Prospective Physics Teacher: The Importance of Discussion of Acceleration as a Vector Quantity Sarkim, Tarsisius
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 1, June 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i1.8231

Abstract

When teaching, researchers found that many students had misconceptions about acceleration. Students' understanding of acceleration is influenced by the terms acceleration and deceleration in everyday life. This misconception results in obstacles to a deeper understanding of motion and an inconsistent understanding of force and its influence on objects. The researcher was curious about what caused this misconception.Researchers suspect that students' misconceptions about acceleration occur because the concept of acceleration is not fully understood as a vector quantity and understanding acceleration is independent of understanding the influence of force on acceleration.This research aims to describe the problem of misconceptions experienced by prospective physics teacher students regarding acceleration and its possible causes.Data was collected over four years, namely from 114 prospective physics teacher students in the first semester of the physics education study program until 2022.They were high school graduates majoring in science where physics, which includes mechanics, is one of the compulsory subjects.Data was collected through multiple choice tests and descriptions. The research results show that the misconceptions experienced by students are: 1) Acceleration is not fully understood as a vector quantity; 2) Students have difficulty explaining the relationship between acceleration and the force that causes it.

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