Gachon University

Prediction of Anemia in Adenomyosis Patients Using Transvaginal Ultrasound Radiomics

Background: Abnormal uterine bleeding (AUB) caused by adenomyosis can result in significant iron-deficiency anemia. Given that transvaginal ultrasound (TVUS) is commonly performed during routine examinations, its assessment may facilitate preemptive treatment. Methods: In this st...

The Effect of News Portal Use for Local News on Subjective Well-Being: The Mediating Role of Thwarted Belongingness and the Moderating Role of Self-Esteem

Considering the changing news consumption patterns driven by new media technology and the decline of traditional local news outlets, the current research explored how the use of news portals for local news as emerging channels of news consumption affects the news audiences’ psych...

Quantifying Spatial Complexity and Signage Distribution in Large-Scale Hospital Wayfinding: A Space Syntax Analysis of a Medical Center

Wayfinding difficulty in large-scale hospitals constitutes a form of healthcare accessibility barrier, affecting patient experience, appointment adherence, and operational efficiency—particularly for elderly, first-time, and cognitively burdened users. This study examines the rel...

Experimental and CFD investigation of heat transfer in high-power avionics equipment

Reliable thermal verification of high-power-density avionics is challenging because densely packed circuit boards and narrow cooling passages complicate detailed modeling and experimental validation. This study evaluates the thermal performance of an avionics enclosure using an i...

Prognostic model for patients with oral cavity cancer using a novel multi-parameter index including radiation response of patient-derived tumoroids

Objective: No reliable model has been established to accurately predict the prognosis of patients with oral cavity cancer (OCC) following surgery and adjuvant radiation therapy. This study aimed to develop a tumoroid-based novel prognostic model for OCC to overcome the limitation...

Strong interlayer coupling and chiral flat-band cascades in twisted bilayer gratings

From atomic crystals to macroscopic material structures, twisted bilayer systems have emerged as a promising route to control wave phenomena. In few-layer van der Waals materials, however, the intrinsically weak interlayer coupling typically demands precise control of small twist...

De-familialization of care and the emerging crisis of unmet needs among older adults in South Korea

Unmet long-term care (LTC) needs are a critical policy indicator for aging societies. Using repeated cross sectional data from the nationally representative National Survey of Older Koreans (2014 and 2023), we examined changes in unmet LTC needs among community-dwelling older adu...

AI Chatbot Dependence as an Indirect Link Between Social Anxiety and Psychological Resilience: The Moderating Role of Perceived Social Support

Generative artificial intelligence has transformed AI chatbots into systems that can provide information, emotional feedback, and social interaction. Although prior research has examined AI adoption, trust, and continuance intention, less is known about sustained reliance on AI c...

Compact wideband circularly polarized antenna and its self-decoupled MIMO configuration for 28-GHz band targeting 5G/6G millimeter-wave networks

Abstract Millimeter-wave communication has become a cornerstone of emerging 5G and future 6G systems due to its ability to support multi-gigabit data rates, ultra-low latency, and dense device connectivity. These performance requirements enforced constraints that are not limited...

Stretchable electroluminescent devices based on microLEDs: materials, fabrication, system design, and applications

Micro-light-emitting diodes (microLEDs) have emerged as one of the most promising emitters for stretchable electroluminescent (EL) devices owing to their high brightness, efficiency, operational stability, and environmental robustness. This review summarizes recent advances in mi...

Discovery of Energy‐Localized Trap States via Opto‐Electrical Spectroscopy in UWBG Perovskite La:SrSnO 3 FETs

ABSTRACT Strontium stannate perovskite (SrSnO 3 ) is emerging as a promising material for next‐generation ultra‐wide bandgap (UWBG) semiconductors due to its high electron mobility and optical transparency. However, despite the critical importance of defect analysis to utilize La...

Adaptive Temporal Reallocation and Trajectory-Aware Modulation for Event-Level Segmentation of Small-Scale UAVs

Event-level segmentation of small-scale unmanned aerial vehicles (UAVs) is challenging because target-generated events are sparse and are easily mixed with background motion and sensor noise. This study extends EV-SpSegNet with Adaptive Temporal Reallocation (ATR), Trajectory-Awa...

An Action-Centric Zero Trust Maturity Model for Agentic AI Environments

Large language model–based agentic AI systems can independently interpret user goals, develop plans, and interact with external tools. These capabilities introduce security concerns that extend beyond traditional access control. However, existing Zero Trust Maturity Models, such...

Structural and electrochemical investigation of Fe-doped sheet-like ZnCo₂O₄ as battery-type electrode for high-performance hybrid supercapacitors

Multi-transition metal spinel oxides with nanostructures have become interesting options for improving the electrochemical performance of next-generation supercapacitors. By synthesizing pure ZCO, 5% Fe-doped ZCO, and 10% Fe-doped ZCO, the structural and electrochemical effects o...

Assessing diabetes risk factors using explainable AI and SMOTEENN: a nutrition-based analysis in South Korea

The coronavirus disease (COVID-19) pandemic has influenced diabetes risk and management at the population level, underscoring the need for interpretable and data-driven risk assessment approaches. We developed an explainable machine learning framework integrating the KNHANES and...

Explainable Multi-Objective Quantum-Inspired Fuzzy Optimization of Rule Bases for Scalable Load Balancing in Multi-Factor Computing Environments

The rapid growth of cloud and distributed computing systems has increased the complexity of real-time request distribution under dynamic and multi-factor conditions. In such environments, load-balancing decisions must simultaneously consider uncertain and interdependent parameter...

Culturally adapted wearable mobile health intervention for physical activity and cognitive function in middle-aged Koreans: a pilot feasibility study

BACKGROUND: Middle adulthood (45-64 years) represents a critical window for the primary prevention of cognitive decline and chronic diseases, with physical activity capable of reducing later cognitive decline by 20% to 35%. However, most evidence on mobile health (mHealth) interv...

Rational Designof Pyrrole-Based Ionizable Lipidsfor mRNA Delivery

Abstract Ionizable lipids are key components of lipid nanoparticles for mRNA delivery. Inspired by the DLin-KC2-DMA ionizable lipid, we developed a series of pyrrole-based ionizable lipids to evaluate the feasibility of incorporating a rigid heterocyclic scaffold into ionizable l...

Identification active compounds from Dregea volubilis that improve insulin secretion by regulating pancreatic β ‐cell metabolism

Abstract Type 2 diabetes (T2D) occurs due to a lack of insulin secretion by glucose stimulation, so high blood glucose levels predominate that associated with metabolic dysregulation. The exploration of bioactive compounds from natural sources has attracted considerable attention...

Synthesis and Comparative Electrochemical Evaluation of Polymer Cobalt Phthalocyanine and SWCNT-Modified Composite as High-Performance Anode Materials for Lithium-Ion Batteries

The development of high-performance anode materials remains a key challenge for advancing lithium-ion battery (LIB) technology. In this work, an oxy-bridged polymer cobalt phthalocyanine (Poly-CoPc) and its single-walled carbon nanotube-modified composite (Poly-CoPc/SWCNT) were s...