Research works

AQUA_MEM: Multi-Dimensional Aqueous State Vector Encoding for Digital Information Storage in Water Droplets

We present AQUA_MEM, a framework for encoding digital information into the measurable physicochemical properties of aqueous solutions. Each water droplet serves as a multi-dimensional state vector whose independent physical channels (pH, ionic conductivity, and optical chromatici...

Multimodal large language model–assisted workflow for image-dependent very short answer question generation and response grading in neurosurgical residency assessment: development and validation study

Very short answer questions (VSAQs) reduce cueing but require substantial specialist effort to develop and grade, particularly when they involve neuroimaging. We evaluated an expert-supervised workflow using multimodal large language models (LLMs) to generate image-dependent neur...

A time-to-event analysis to conceptualize and predict delay in type 2 diabetes diagnosis in primary care

Delayed diagnosis of type 2 diabetes (T2D) increases the risk of diabetes-related health complications. Although signs of T2D are commonly identified in primary care, delays in diagnosis remain a significant challenge. The relationship between patient-level factors (e.g., demogra...

Baseline airway dysfunction and small-airway abnormality burden are longitudinally associated with adverse ultradistal radial bone density outcomes in a 5-year cohort

Impaired pulmonary function has been linked to lower bone mineral density and higher fracture risk, but longitudinal evidence on airway dysfunction and subsequent peripheral bone-density outcomes remains limited. We investigated whether baseline airway dysfunction, FEV1/FVC, and...

K.O.R.J. 4 MATH METHOD: Non-Linear Matrix Folding and Multi-Base Discrete Computational Models

This deposit records a completed computational study of a seventy-two cell numerical field derived from three consecutive verses of Exodus (14:19–21), each of which contains exactly seventy-two consonantal letters. Lexical items from four writing systems — Aramaic/Hebrew, Arabic,...

Laparoscopic versus transvaginal mesh surgery in treatment of apical pelvic organ prolapse in women: MESH-study protocol for a randomized controlled trial

Lifetime risk for pelvic organ prolapse is 10–13%. As primary surgical treatment hysterectomy has been a common procedure, with or without colporrhaphies. The risk of recurrent apical prolapse is approximately 10%, and mesh surgery is often needed to gain sufficient support for t...

The Effect of Polypropylene Microplastics on the Rheological Properties of the Cohesive Coastal Sediments

미세플라스틱이 전 세계 해양 생태계에 광범위하게 확산되면서, 이로 인한 심각한 환경 문제가 대두되고 있다. 미세플라스틱은 해양 내에서 여러 경로를 거쳐 최종적으로 해양 퇴적물에 축적되며, 퇴적물의 성상을 변화시키는 것으로 알려져 있으나, 미세플라스틱이 연안 점토질 퇴적물의 성상 변화에...

Recognition and reporting of vertebral fractures in thoracic and abdominal computed tomography images — have we learnt our lesson?

The reporting rate of vertebral fractures (VFs) identified on routine thoracic and abdominal CT scans was evaluated. Only 14.7% of VFs were documented in the impression section of the radiology report. These findings indicate that the recognition and reporting of VFs on routine C...

Study on the Applicability of On-Board Acceleration Data from KTX Commercial Trains for High-Speed Railway Track Maintenance

본 연구는 KTX 영업열차(36호차)에서 4,000Hz로 취득한 차축·대차·차체 진동가속도를 저·중·고주파 대역별로 분석하여 유지보수에 활용이 가능한지를 검토하였다. 대역별 Butterworth 필터링, 위치 기반 이동 RMS 산출, 통계적 이상치 판정의 3단계 절차를 적용하였으며, 분석 결과를 광명-오송 구간...

Association between Blood Concentrations of Lead and Total IgE in South Korean Adults: An Analysis of Data from the Fourth Korean National Environmental Health Survey

Background: Long-term exposure to heavy metals may affect the human immune system in adult populations as well as children.Objectives: This study aimed to evaluate the association between blood concentrations of lead and mercury and total immunoglobulin E (IgE) level among South...

Integrated Microscopic Train Operation Simulation Approach and Macroscopic Optimization Model for Railway Capacity Assessments

본 연구는 기존의 야마기시 방식과 같은 산식 중심의 선로용량 분석 체계 대신, 주어진 스케줄을 압축하여 해당 스케줄이 선로를 얼마나 효과적으로 활용하고 있는지를 평가하는 UIC 406 기반의 선로용량 분석 방법을 적용함으로써, 평택–오송 복복선화 사업 등 철도 건설 사업에 따른 선로용량 증대...

Trojan Skeletons in the Climate System: Effective Hamiltonian Structures in Dissipative Ocean-Atmosphere Dynamics

This paper introduces the Trojan Skeleton framework, which provides a mathematical explanation for how coherent structures persist in the dissipative, forced climate system. Despite being driven by irreversible processes like turbulent mixing and radiative transfer, climate subsy...

Field Evaluations of Intelligent Compaction Measurement Values for Quality Control of Trackbed Compaction

철도 노반의 장기 성능 확보를 위해 다짐 품질관리의 중요성이 커짐에 따라 현장의 다짐 품질을 연속적으로 평가할 수 있는 지능형 다짐 기술에 대한 관심이 증가하고 있다. 이에 본 연구에서는 10 ton급 진동롤러를 이용한 현장시험을 통해 가속도계 사양, 센서 부착 위치 및 데이터 처리 방법이 대표...

A Technical Framework for Investigating Microbial Antigen-Driven Spatial Immune Selection and Clonal Escape in Acquired Aplastic Anemia

Acquired aplastic anemia (AA) is an immune-mediated bone marrow failure syndrome in which hematopoietic stem and progenitor cell (HSPC) destruction coexists with selective expansion of hematopoietic clones capable of surviving immune pressure. Recent studies have independently de...

Defensive cardiac states sharpen neural value representations during decision making

Abstract We regularly face situations that require us to choose between approaching a reward and avoiding a threat. While defensive freezing constitutes an important strategy to help us weigh potential threats and rewards, it remains unclear how freezing states enable threat-rewa...

Neuroaesthetics, Artificial Intelligence, and Digital Performance: Hermeneutics, Narrative, and the Transformation of Aesthetic Experience from Hamlet to Rosencrantz and Guildenstern Are Dead

Revised version of an interdisciplinary research article examining the relationship between neuroaesthetics, artificial intelligence, deep learning, hermeneutics, digital performance, narrative, authorship, and aesthetic experience. The study uses Shakespeare’s Hamlet and Tom Sto...

Avoiding Link Rot: A Scholarly Publisher’s Process for Preserving Online Citations

While the digital era has made it much easier to share information in the short term, it is more difficult to trust the long-term stability of online material appearing in citations. Content can be revised after first publication, its location can change, or the content can be re...

Strategic Participation on Tokenized Platforms: Balancing Investment and Labor Intensities

Participants on tokenized platforms (i.e., platforms with blockchain implementation) can simultaneously take multiple roles, such as user, investor, and laborer, and draw income from the last two roles. Unlike traditional markets that typically prioritize one means of profitable...

The Global Maximum Point Invariance Theorem: A Statistical Invariant Theory of Structural Break Detection — Unified Shape Function, Standardized Limits, and Multi-Regime Generalization

This paper establishes a mathematical theorem system for between-group regression difference statistics in structural break detection. The central result is the Global Maximum Point Invariance Theorem: in a two-regime linear switching model with homogeneous second-moment design,...

Non-isothermal vertical distribution functions for the Milky Way

Abstract The vertical structure of our Galaxy has commonly been assumed to follow a pseudo-isothermal distribution. However, there is no a priori reason to expect this form to arise from scattering by giant molecular clouds (GMCs), since GMCs are confined to a narrow layer around...