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International Journal of Applied Sciences and Smart Technologies
ISSN 2655-8564 · Universitas Sanata Dharma · 163 articles in the index
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Journal Article
Durability of Silica Sand-Based Self-Compacting Mortar: A Study on Sorptivity and Chemical Attack
Cement is an essential construction material which serves as the binder in the production of concrete, mortar and bricks production. The production of cement poses a serious issue as it results in the emission of greenhouse gases directly responsible for climate change. In this study…
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Journal Article
The Influence of Printing Parameter Variations on the Dimensional Accuracy of 3D Nylon Carbon FDM Prints Using the Grey-Taguchi Method
The dimensional accuracy of the printed specimen in the process of forming a workpiece with carbon fiber material using the Creality K1 Max printer machine requires a combination of parameters in the printing process. The printing type using Fused Deposition Modeling (FDM) is a very popular type of…
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Journal Article
Grouping Weekly Weather Based on Weather Elements in Pagaralam by Using K-Means Clustering Analysis
Weather is the result of the interaction and combination of various atmospheric elements that occurs in a relatively small place or region over a short period of time. This study aims to analyze weekly weather characteristics in Pagaralam using the K-Means Clustering method. The data used was…
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Journal Article
Tourism News Classification Using Convolution Long Short-Term Memory (C-LSTM)
Along with the rapid development of information technology, news about Indonesian tourism destinations can now be accessed widely through various platforms such as social media and online news, making news easily accessible. With the increase in tourism news, manual news classification is less…
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Journal Article
Using the Six Sigma DMAIC Approach to Improve Maintenance Practices of Ground-Service Mechanical Equipment within a Sub-Saharan African Airport
Despite its ambitions for the most effective and world-class standard attainment, the ground-service equipment literature for airports is limited in engagements with the question of how to ascertain the effectiveness of maintenance services for critical ground-service equipment, to improve company…
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Journal Article
A Sub-Saharan African Airport Mechanical Equipment Failure Assessment Using Joint FMECA-GRA Method Based On Technical Process Efficiency
This article establishes how airport ground equipment fails in operations to enhance failure prediction, reduce maintenance and costs. Airports are essential to enhance the economy of a developing country and these failures affect the efficiency of the airport system. Consequently, this paper deals…
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Journal Article
IoT Based Nozzle Actuation System Design for Automated Fish Feed Distribution
This study presents the design and development of an IoT-based nozzle actuator system intended to improve the accuracy and efficiency of automatic fish-feed distribution. The system was designed using an ESP32 microcontroller as the central controller, a servo motor as the nozzle-direction…
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Journal Article
Principal Component Analysis-Driven Feature Reduction for Predicting Coffee Quality Using a Machine Learning Approach
Coffee quality assessment using a machine learning approach faces major challenges, including high data dimensionality and redundancy between features. Therefore, PCA is proposed as a feature reduction technique to improve the efficiency and accuracy of coffee quality prediction models. The…
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Journal Article
Development of an Arduino-Based Water Rocket Launcher in Physics Experiments
The effective science education requires practical methods that allow students to explore complex physics concepts. One promising approach is the use of physics experiment as an interactive media. This research focuses on the development of water rocket launcher using an Arduino as an innovative…
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Journal Article
Technical and Cost Barriers in Accessing Smart Educational Technologies in Rural Areas
This research study explore how data costs and technical issues affect the use of LowDataMode, based on insights from 100 people living in a resource-limited setting. Using chi-square tests and logistic regression, I analyzed how device types, network access, barriers, and platform usability…
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Journal Article
Analysis of Key Features in PCOS Diagnosis Using Random Forest and XGBoost with SMOTE and SHAP
Polycystic Ovary Syndrome (PCOS) is a hormonal disorder in women of reproductive age characterized by irregular cycles, hyperandrogenism, and polycystic ovarian morphology. Diagnosis is challenging because symptoms overlap with other endocrine disorders. This study proposes an interpretable machine…
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Journal Article
Modelling and Analysis of Ziegler-Nichols PID Tuning on Water Tank Control System
In the industrial world, the water level in the tank is often controlled using a PID controller. The main problem in using a PID controller is the problem of tuning the three PID parameters (Proportional gain, Integral gain, and Derivative gain). In this study, the parameter controller tuning is…
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Journal Article
A Simulation-Based Approach To Spiral Pump Design
The consistent availability of irrigation water in agricultural areas remains a challenge to this day, due to the fact that rivers are always located at a lower elevation than farmland. As an alternative solution, a spiral pump has been introduced that operates solely using the kinetic energy of…
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Journal Article
Psychrometric Performance of the Air Dehumidifier Base Clothes Dryer
Drying clothes with dehumidifier machine and additional IR light experiments were conducted to show the psychrometric performance of dehumidification drying. Experiment of dehumidification drying 7.07 kg wet clothes to 4,78 kg dry clothes and 9.9 kg wet clothes to 7.67 kg dry clothes were applied…
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Journal Article
Handling Highly Imbalanced Flood Data Using K-Means Clustering in Skyline Query Dominance Testing
Skyline query is a recommendation algorithm used to select objects based on multi-attribute preferences, but a key challenge is that its results can be highly imbalanced, where only a small number of objects meet the preferred criteria. This imbalance reduces the reliability of spatial…
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Journal Article
Thermal Investigation on Lithium-Ion Battery Using Liquid Cooling Method
An electric battery is an energy storage device that has a high energy density, a long lifetime and has a high rate of charging and discharging the battery. The performance of the Lithium-Ion battery greatly affects the temperature of charging and discharging, so a cooling method is needed that is…
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Journal Article
Kinematics and Mathematical Modelling of Wheeled Mobile Robots: a compact review
This paper presents a comprehensive review on the kinematics and mathematical modelling of wheeled mobile robots. Wheeled mobile robots are a class of robots whose locomotion is facilitated by a set of wheels. The paper delves into the aspects that have proved to be the center of research as far as…
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Journal Article
Design of a Portable Air Quality Monitoring System Using Internet of Things Based Multisensor
The rise in air pollution in the modern era, particularly in urban areas, has hurt public health. Current conventional systems can only measure a limited number of parameters. While several air quality monitoring systems exist, they are extremely expensive and therefore inaccessible to the general…
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Journal Article
Topology Optimization of Rear Sprocket of Electric Prototype Vehicle
Kompetisi Mobil Hemat Energi (KMHE) competes for energy efficient vehicles, which are composed of integrated energy-saving systems. One of the systems that is required to be energy efficient is transmission. The transmission discussed in this study is the sprocket chain transmission system. The…
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Journal Article
Geocoding and Development of a Web-Based Water Distribution Geospatial Information System for Ilorin Metropolitan City, Kwara State Nigeria
Water is essential for human life and activities, but its supply depends on the proximity and interconnection network with the populations or cities that need it. Moreso, the proper functioning of water supply systems (WSS) relies on the expertise and experience of field workers who rely on…