Seoul National University

Memristive Motion‐Streak Neuron for Spatiotemporal Multiple Object Detection

ABSTRACT Conventional artificial vision systems process dynamic scenes inefficiently by reconstructing motion from discrete frames, which requires post‐processing. In contrast, real‐world environments containing multiple moving objects demand sensor‐level discrimination. This wor...

Calderón–Zygmund estimates for generalized double phase equations with matrix weights

Abstract We prove Calderón–Zygmund estimates for generalized double phase equations with Orlicz growth and variable matrix weights. The operator combines a nonuniformly elliptic double phase structure with a degenerate or singular matrix weight satisfying a small log‐ condition....

Parcel-level crop classification in small and irregular fields using structured Sentinel-2 data and clustering based analysis

Abstract Satellite image time-series (SITS) is one of the most useful tools for crop type classification. However, the low resolution of satellite image is a challenge for small, irregular shaped parcels such as farms in South Korea. In this study, we conducted a comprehensive ev...

Determining the optimal design characteristics of trapezoidal piano key weirs for improved water discharge

Abstract This study attempts to evaluate the influence of design factors and flow characteristics on the discharge capacity of trapezoidal piano key weirs. To evaluate the influence of the main design factors on discharge rates, 9 models were simulated, with width ratios of 1.25,...

Nitric oxide generation from nitrate at the cobalt center

Abstract Herein, we report the synthesis and reactivity of the cobalt(II) nitrate complex, ( acri PNP)Co(NO 3 ) ( 2 ). Exposure of 2 to both CO(g) or PPh 3 drives a deoxygenation pathway to afford the mononitrosyl nitrite cobalt species ( 4 ). To elucidate the electronic features...

Quantitative Dynamicsand Modulation of Reactive OxygenSpecies in Aqueous Microdroplets

Abstract Reactive oxygen species (ROS) such as hydroxyl radical (·OH), superoxide radical (O2·–), and hydrogen peroxide (H2O2) differ strongly in reactivity and function. This diversity makes it challenging to regulate ROS-driven chemistry while minimizing undesired side reaction...

Performance metrics in systematic reviews and meta-analyses of artificial intelligence-based prediction models for children and pregnant women: protocol for an umbrella review

Artificial intelligence (AI) has shown significant promise in medical diagnostics. However, children and pregnant women represent “vulnerable populations” often underrepresented in large-scale training datasets. This paper summarizes a protocol for an umbrella review aiming to id...

Iron-responsive transcription factor SreA regulates calcium homeostasis independently of calcineurin–Crz1 pathway in Fusarium graminearum

ABSTRACT Calcium is an abundant intracellular ion that is intricately involved in various cellular processes. The precise regulation of calcium homeostasis is critical for fungal physiology. In fungi, calcium signaling is primarily mediated by the calmodulin–calcineurin pathway,...

Comparison of diestrus duration and temporal gene expression patterns in vaginal smear samples from pseudopregnant rats induced by sonic vibration or mating with vasectomized males

BACKGROUND: Induction of pseudopregnancy is a prerequisite for successful embryo transfer in rats. Conventionally, pseudopregnancy is induced by mating females with vasectomized males. Although effective, this method requires surgical preparation and maintenance of sterile males...

Structure‐Engineered Nanoporous Vanadium Oxide Memristors for Reconfigurable Synapse–Neuron Integration and Synergistic Robotic Motion

ABSTRACT Neuromorphic sensory‐to‐motor interfaces require compact devices that can combine nonvolatile synaptic weight storage with volatile neuronal firing, yet these functions typically rely on distinct material and circuit mechanisms. Here, we report a structure‐engineered VO...

Perioperative outcomes of robot-assisted, laparoscopic or thoracoscopic, and open surgery across 13 cancer operations: a single-institution cohort of 36,208 cases

Abstract To compare perioperative outcomes of robot-assisted surgery, video-assisted (laparoscopic or thoracoscopic) surgery and open surgery across 13 oncologic procedure groups, because aggregate technology-level comparison is confounded by procedure mix and by the calendar tim...

Forecast-based attribution of the role of stratospheric variability in weather extremes

Abstract. Variability of the stratospheric polar vortex, particularly its dramatic breakdown during sudden stratospheric warming (SSW) events, has been linked to a number of surface weather extremes. However, attributing the role of stratospheric variability in a specific observe...

A Diagnosis Buried in the Closet: How Autistic People Learn of Their Autism Diagnoses

Background: Learning that one is autistic can be a pivotal turning point in self-understanding, but autistic people learn of this information under highly variable conditions. How these disclosure conditions shape autistic people’s experiences of learning and making sense of the...

Low‐Voltage Operation of IGZO Memtransistors Enabled by Coupling Enhancement Through 2T Drain‐Driven Operation for Neuromorphic Computing

Neuromorphic computing has emerged as a promising approach to overcome the limitations of the von Neumann architecture by enabling energy‐efficient data processing. Here, we demonstrate a two‐terminal (2T) flash‐type indium–gallium–zinc oxide memtransistor for voltage‐scalable an...

Rare variant effect estimation and polygenic risk prediction

Abstract Due to their low frequency, estimating the effect of rare variants is challenging. Here, we propose RareEffect, a method that first estimates gene- or region-based heritability and then each variant effect size using an empirical Bayes approach. Our method uses a varianc...

Comparing Hair Cortisol, DHEA, and Cortisol-to-DHEA Ratios from Various Body Sites in Anatolian Shelter Dogs

Hair-based biomarkers offer a non-invasive window into chronic stress physiology, yet the influence of sampling body site on hair cortisol, dehydroepiandrosterone (DHEA), and their molar ratio has not been systematically characterized in domestic dogs. This study compared these t...

Surgical resection and angularis oris axial pattern flap reconstruction with adjuvant radiation therapy for recurrent soft palate leiomyosarcoma in a dog

Leiomyosarcoma of the oral cavity is extremely rare in both human and veterinary medicine. To the best of our knowledge, this is the first report describing the clinical course and multimodal treatment of a canine leiomyosarcoma arising in the soft palate. A 3-year-old, spayed fe...

An edge AIoT framework for optimizing the placement of integrated soil sensors in agricultural wireless sensor networks

Edge Artificial Intelligence of Things (AIoT) optimization of integrated soil sensor networks is essential for intelligent, data-driven precision agriculture. However, achieving adequate field coverage while minimizing deployment costs is challenging, especially with integrated s...

Influence of many-body correlation and mixed-valence fluctuations on X-ray magnetic circular dichroism and resonant inelastic X-ray scattering spectra

X-ray magnetic circular dichroism (XMCD) and resonant inelastic X-ray scattering with magnetic circular dichroism (RIXS-MCD) provide unparalleled insights into the electronic and magnetic dynamics of complex materials. However, interpreting their spectra in mixed-valence systems...

Stiffness-Dependent Mechanotransductive Signaling in Silicone Implant-Associated Fibrotic Encapsulation

Abstract Fibrotic encapsulation remains a major limitation of silicone-based soft-tissue implants and contributes to capsular contracture. Although biochemical and immunological factors have been extensively investigated, the contribution of implant stiffness to the peri-implant...