-
Article
Plastic-Derived Solid Acid Catalysts for the Production of Methyl 2-Hydroxyisobutyrate via Esterification
In this study, we successfully prepare solid acid catalysts using plastic as the starting material for the production of methyl 2-hydroxyisobutyrate (HBM) through the esterification of 2-hydroxyisobutyric acid...
-
Article
Failure analysis and maintenance of hydrogen refueling stations
An analysis of various system configurations of hydrogen refueling stations and the types of failures that can occur in these stations is presented herein. Although the major components (compressor, storage ta...
-
Article
Domain-free fire detection using the spatial–temporal attention transform of the YOLO backbone
Conventional fire detection approaches typically relied on distinct models to address the varying characteristics of fires and smoke, particularly under different day and night conditions. Additionally, the di...
-
Article
BTD-RF: 3D scene reconstruction using block-term tensor decomposition
The Neural Radiance Field (NeRF) exhibits excellent performance for view synthesis tasks, but it requires a large amount of memory and model parameters during three-dimensional (3D) scene reconstruction. This ...
-
Article
STAR++: Rethinking spatio-temporal cross attention transformer for video action recognition
Video action recognition needs to model any differences by subdividing the spatio-temporal features to distinguish various actions. We propose rethinking spatio-temporal cross attention transformer (STAR++), a...
-
Article
Eco-friendly CaO-based catalysts derived from waste oyster shells for the oxidative coupling of methane
In this study, we developed an economical and eco-friendly high-performance catalyst for the oxidative coupling of methane from waste oyster shells, which cause environmental pollution. The oyster shells were ...
-
Chapter and Conference Paper
Angular Foot Movement Time Variability in Foot-Based Interaction
In the foot-based interaction studies, the typical pattern of foot movement is to lift the foot, move horizontally or vertically to approach an input button, and then click the button. This study is a research...
-
Article
SSL-MOT: self-supervised learning based multi-object tracking
Although the use of a Siamese network is the most popular approach in object tracking, it creates an undesirable trivial solution and requires a large amount of training data reflecting changes in the object’s...
-
Article
Numerical flow visualization of a single large-sized bubble in turbulent Couette flow using OpenFOAM
Owing to different flow conditions—for example, Poiseuille and Couette flow—one could expect different deformations of large-sized bubbles; however, bubble dynamics has been mostly investigated in channel flow...
-
Article
The Role of Social Capital in the Onset of Victimization against Children
Violence against children is a severe threat to children’s development and wellbeing. Once children are victimized, they are more likely to be at risk of further victimization. Therefore, a preventive and proa...
-
Chapter and Conference Paper
Image Registration Between Real Image and Virtual Image Based on Self-supervised Keypoint Learning
A digital twin is a next-generation technology that connects virtual and physical environments into a single world. Although the virtual environment of a digital twin models the real world, the technology used...
-
Article
Lightweight surrogate random forest support for model simplification and feature relevance
In this study, we propose a lightweight surrogate random forest (L-SRF) algorithm that can be interpreted through a new rule distillation method. The common surrogate models replace the existing heavy and deep...
-
Chapter
Modeling Vanadium Redox Flow Batteries Using OpenFOAM
This chapter establishes that OpenFOAM is applicable for analyzing the electrolyte flow in a vanadium redox flow battery (VFB) and the transport phenomena in these systems. The local porosity was controlled by...
-
Article
How Daily Strain Leads to Cyber Delinquency: a Focus on the Role of Self-Esteem and Anger
Exposure to cyber delinquent behaviors leads to various far-reaching negative consequences in adolescents, which justifies exploring factors that contributes to their involvement in cyber delinquency. This stu...
-
Article
Effects of physicochemical properties of biochar derived from spent coffee grounds and commercial activated carbon on adsorption behavior and mechanisms of strontium ions (Sr2+)
This study examined differences in the adsorption isotherms, kinetic equations, and thermodynamics of Sr2+ by biochar from spent coffee grounds (SCG) and powdered activated carbon (PAC). The specific surface area...
-
Article
High-Mobility Low-Hysteresis Electrolyte-Gated Transistors with a DPP-Benzotriazole Copolymer Semiconductor
High-mobility low-hysteresis electrolyte-gated thin-film transistors were successfully fabricated using a diketopyrrolopyrrole (DPP) and benzotriazole (BTz) copolymer semiconductor and high-capacitance ion gel...
-
Article
Open AccessImproving guidewire-mediated steerability of a magnetically actuated flexible microrobot
Here, we develop a flexible microrobot enhancing the steerability of a conventional guidewire. To improve steerability, a microrobot is attached to the tip of the guidewire and guided using an external magneti...
-
Article
Characterization of a Piezoelectric AlN Beam Array in Air and Fluid for an Artificial Basilar Membrane
In this study, we present a piezoelectric artificial basilar membrane (ABM) composed of a 10-channel aluminum nitride beam array. Each beam varies in length from 1306 to 3194 μm for mimicking the frequency sel...
-
Article
Open AccessFabrication and Characterization of a Magnetic Drilling Actuator for Navigation in a Three-dimensional Phantom Vascular Network
Intravascular microrobots have emerged as a promising tool for vascular diseases. They can be wirelessly and precisely manipulated with a high degree of freedom. Previous studies have evaluated their drilling ...
-
Article
Korean American Adolescents’ Depression and Religiousness/Spirituality: Are There Gender Differences?
The purpose of this study was to examine depression and religiousness/spirituality (R/S) in Korean American adolescents with an interest in exploring gender differences. The sample consisted of 182 adolescents...
