Seoul National University

Characterizing TVOC Increases and Terpene-Derived BVOC Contributions in Wood-Finished Public Facilities

Total volatile organic compounds (TVOCs) are widely used to assess indoor air quality (IAQ). However, because TVOCs combine diverse compounds into a single metric, they cannot distinguish individual emission sources or chemical characteristics. Indoor environments with natural ma...

Three-Year Outcomes of Drug-Eluting Stents, Drug-Coated Balloons, and Non-Drug-Eluting Devices in Native Femoropopliteal Artery Disease: An Analysis of the K-VIS ELLA Registry

Background: Although drug-eluting devices have demonstrated improved efficacy in femoropopliteal artery (FPA) disease, evidence on their long-term clinical outcomes in realworld practice remains limited.Methods: Using data from the multicenter Korean Vascular Intervention Society...

Effects of transfer learning on seedling detection from drone imagery: a layer freezing study with faster R-CNN

Effective decision-making in forest management relies on accurate and timely data, yet conventional manpower-based methods often fail to provide sufficient coverage. This study develops a cost-effective, deep learning–based monitoring technique for assessing replanted areas follo...

Diffusion Kinetics of Ba Cations in Perovskite BaTiO3: A Combined Tracer Diffusion and Metadynamics Study

Abstract Tracer diffusion experiments and metadynamics (MetaD) simulations were used to study the diffusion of Ba cations in the cubic phase of the perovskite oxide BaTiO3. 130BaTiO3 thin films were used as diffusion sources to introduce barium tracer diffusion profiles into sing...

Graph Canonical Coherence Analysis

We propose graph canonical coherence analysis (gCChA), a novel framework that extends canonical correlation analysis to multivariate graph signals in the graph frequency domain. The proposed method addresses challenges posed by the inherent features of graphs: discreteness, finit...

Beyond Metallic Electrodes: Semiconductor Photoelectrocatalysis for Organic Synthesis

Abstract Photoelectrocatalytic (PEC) systems convert incident light into photovoltage, enabling reactions to proceed at significantly reduced overpotentials. Leveraging this inherent energy efficiency, recent efforts have rapidly expanded PEC applications beyond traditional energ...

COREA (Curriculum Ontology Reservoir for Education using AI): Korean Prototyping — An English-language technical report of Research Project No. 2025-1-08

This is an English-language technical report of a study reported in full, in Korean, as Research Project No. 2025-1-08 under Korea's Educational Development Special Zone — Digital Education Innovation Project. It introduces no data, analysis, or claim absent from the Korean repor...

Prioritizing dental care in South Korean prisons: a dual-structured triage model integrating medical urgency and willingness to pay

Dental care in correctional institutions is often constrained by limited resources, raising concerns about treatment prioritization. This study explores how prison health dentists (PHDs) allocate dental treatments based on clinical urgency and inmates' willingness to pay (WTP), a...

Establishment and tenogenic characterization of canine tendon-derived stem cells compared with adipose-derived stem cells

Abstract Background Tendon-derived stem cells (TDSCs) possess inherent lineage specificity for tendon regeneration. However, their characteristics in dogs remain poorly defined. Establishing a canine tendon-derived stem cell (cTDSC) population and verifying its tenogenic properti...

Automated segmentation of myopic atrophic lesions on ultra-widefield fundus images: effects of training-set size and color representation

Abstract Purpose To develop and evaluate a deep-learning model for automated segmentation of myopic atrophic lesions on ultra-widefield (UWF) fundus images and to evaluate the effects of training-set size and color representation on segmentation performance. Methods This study in...

Differential Effect of Formality of Speech Style on Negation Selection in Korean Children and Adults

Abstract Korean negation has two forms, Short-Form Negation (SFN) and Long-Form Negation (LFN), claimed to have different pragmatic meanings in terms of formality. This paper investigated whether Korean 5-year-old children and adults responded to the level of formality in a conve...

Bond–slip model for estimating the friction coefficient of pretensioned strands considering end slip

Abstract In pretensioned prestressed concrete members, the transfer length of the strand exhibits significant variability, but current design equations do not fully account for the effects of various factors. However, the end slip value of the strand exhibits a strong correlation...

Familial clustering of clinically measured oral health in co-resident three-generation families: a family-linkage study using KNHANES data

Abstract Background Oral diseases cluster in families and follow a strong social gradient, yet how far this familial patterning extends across generations, and whether it reflects shared socioeconomic position, is poorly understood. Most evidence is limited to parents and childre...

Human milk-derived Limosilactobacillus reuteri improved growth performance of weaned pigs by modulating systemic immune responses and enhancing intestinal health

This study aimed to evaluate the effects of dietary supplementation of human milk-derived Limosilactobacillus reuteri (REU) on growth performance, frequency of diarrhea, and systemic and intestinal health parameters of weaned pigs. Dietary supplementation of REU had greater (P =...

Monolithically Integrated IGZO Synaptic Transistors on a Silicon Nitride Waveguide for Optoelectronic Neuromorphic Computing

Abstract We report the first demonstration of monolithically integrated amorphous indium–gallium–zinc oxide (IGZO) synaptic transistors on a silicon nitride (Si3N4) waveguide, enabling direct on-chip optical programming by using guided 532 nm light. In this architecture, the evan...

Disentangling the relative importance of tree-cast shadows and transpiration in mitigating urban extreme heat

Abstract This study quantifies and compares the relative importance of tree-cast shadows and transpiration in mitigating urban extreme heat through online numerical simulations using the Weather Research and Forecasting (WRF) model coupled with an urban canopy model that represen...

Vagus nerve stimulation for obesity: an electrical-targeting perspective on physiological themes and translational challenges

Abstract Implantable vagus nerve stimulation (VNS) has been explored as a programmable bioelectronic approach for modulating feeding and metabolic function in obesity. However, obesity-related VNS is not a single uniform intervention. Studies differ in stimulation site, electrode...

Enhanced seam segmentation for automated welding robot in construction through transfer learning: addressing limitations of bilateral segmentation network

Reliable weld seam segmentation is essential for autonomous robotic welding in construction, where severe illumination changes, specular reflections, and thin weld geometries frequently degrade segmentation performance. This paper proposes a lightweight post-training optimization...

PALRec: Large Language Model-Based Sequential Recommendation With Parameter-Preserving Augmentation

Large Language Models (LLMs) have demonstrated remarkable general-purpose abilities across a wide range of domains, and these strengths have also been increasingly evidenced in recommender systems. However, existing methods that attempt to integrate collaborative signals into LLM...

Direct Observation of Topologically Enhanced Interfacial Miscibility in Ring–Linear Polymers

Abstract Cyclic polymers, lacking chain ends, exhibit unique behavior when blended with linear analogues. In such cyclic/linear mixtures, cyclic polymers permit chain threading, wherein linear chains penetrate the ring-like structure, increasing entropy and enhancing interfacial...