Research works

Weighted Binary Search Tree for NDN Lookup

오늘날 사용되는 IP 기반의 호스트 중심 라우팅 방식은 대용량 콘텐츠 전송과 반복 요청 트래픽 처리에서 비효율을 초래하고 있다. 동일한 데이터가 여러 사용자에 의해 반복적으로 요청되더라도 매번 원 서버로부터 데이터를 다시 전송해야 하기 때문에 네트워크 지연과 혼잡이 증가하는 문제가 발생...

Development of a Policy Decision Support Management Model for Air Traffic Management

본 연구는 항공교통관리(Air Traffic Management, ATM)에서 정책 대안의 효과를 사전에 예측·평가하기 위하여 시스템 전반의 상호작용을 반영한 정책 의사결정지원모형(Decision Support Management, DSM)을 구축하였다. DSM은 연립방정식체계 모형(FIML)을 기반으로 하여, 국가항행계획(NARAE 2.0)에...

Efficacy and safety of blood flow restriction exercise training in adults aged 60 years and older: an umbrella review of systematic reviews

Blood flow restriction (BFR) exercise may permit older adults to train at lower mechanical loads. Interpretation of the review literature is complicated by heterogeneous age boundaries, BFR and exercise prescriptions, effect metrics, safety definitions and primary-study overlap....

Refining source-oriented ecological-health risk assessments of soil potentially toxic elements using region-specific geochemical baseline values in a high geological background region

Naturally mineralized regions exhibit elevated geochemical backgrounds of soil potentially toxic elements (PTEs). However, the use of uniform geochemical baseline values (GBVs) frequently leads to misclassification between natural enrichment and anthropogenic contamination, hinde...

Vocabulary depth, vocabulary breadth, and speechreading as predictors of reading comprehension and inference accuracy in deaf adolescents

The current study examined the contributions of vocabulary breadth, vocabulary depth, and speechreading to reading ability in 37 severely and profoundly deaf adolescents aged 14 to 16 years. Participants completed assessments of nonverbal cognitive ability, vocabulary breadth, vo...

Blood Pressure Estimation Using Graph Convolutional Neural Networks with Dynamic Adjacency Matrix

The estimation of blood pressure using pulse transit time is critical for the continuous monitoring of blood pressure during our daily lives. This study addresses the challenge by introducing a novel, non-invasive approach for blood pressure estimation that does not rely on pulse...

Impact of Voluntary Older Driver’s License Surrender on Traffic Crashes : Continuous Difference-in-Differences Analysis

본 연구에서는 서울시 고령자 운전면허 자진반납제도와 교통사고 감소 간의 통계적인 연관성을 분석하고, 정책적 기여 가능성에 대한 실증적 근거를 제시하였다. 고령자 운전면허 자진반납제도와의 연관성을 확인하기 위해 면허반납률 변화와 고령자 사고율과의 관계를 분석했으며, 이를 위해 처치집단...

Analyzing Spatial Non-Stationarity of Factors Affecting Expressway Traffic Crash Severity : A Geographically Weighted Ordered Logit Approach

본 연구는 고속도로 교통사고 심각도에 영향을 미치는 요인들이 전국적으로 동일하게 작용한다는 기존 전역적(global) 모형의 공간적 정상성 가정을 극복하고, 해당 요인들의 공간적 비정상성(spatial non-stationarity)을 실증적으로 규명하기 위해 지리가중 순서형 로짓 모형을 적용하는 데 목적이...

crawlR: A Large-Scale Analysis of the R Ecosystem Using Static Program Analysis

Packages play a big part in the development of research software and have a huge influence on the quality, reproducibility, and reusability of code artifacts. For example, good packages can improve the reproducibility of code by providing well-tested, documented, and robust funct...

Comparative Study on 2D and 3D CVA Measurement Differences According to Distance Conditions Using an RGB-D Camera

장시간 컴퓨터 사용으로 인한 거북목 증후군이 사회적 문제로 대두됨에 따라, 실시간 자세 모니터링 시스템의 필요성이 증가하고 있다. 기존 2D 웹캠 기반 시스템은 깊이 정보 부재로 인해 카메라와 피험자 간 거리 변화, 원근 투영, 렌즈 왜곡 등에 따른 측정값 변동이 발생할 수 있다. 본 연구는 RGB...

Forgery Detection and Characteristic Analysis of Scanned Document Utilizing Paper Fingerprint

최근 디지털 이미지 및 문서의 활용이 증가함에 따라 이런 문서의 위·변조 문제는 사회적 신뢰성과 직결되는 중요한 이슈로 부각되고 있다. 특히 SNS 및 온라인 플랫폼의 확산으로 조작된 이미지나 문서의 유통이 증가하면서 이를 자동으로 탐지하는 기술의 필요성이 커지고 있다. 스캔 문서는 이미지...

Targeting DNA damage signaling in atherosclerosis: molecular mechanisms and therapeutic opportunities

Atherosclerosis is a lipid-driven, chronic inflammatory disease of large and medium-sized arteries that underlies major cardiovascular events and remains a leading cause of mortality and morbidity worldwide. It is characterized by the progressive formation of lipid-rich plaques w...

Secondary school teachers' roles and experiences in supporting students with depression, anxiety, early psychosis, and suicide risk: A scoping review

Mental ill health commonly emerges during adolescence, with depression and anxiety highly prevalent, early psychosis first appearing during this period, and suicide a leading cause of death among young people. These conditions disrupt students' engagement, attendance, and academi...

Identification and preliminary functional characterization of MsPAL2, a key salt-tolerance gene during seed germination in Medicago sativa

Alfalfa ( Medicago sativa ) is an important legume forage crop. Salt stress severely impairs seed germination, compromising field establishment and subsequent seedling growth. However, the key genes underlying alfalfa seed responses to salt stress during germination remain largel...

Detection of cardiovascular conditions using ECG image analysis: an evaluation of DenseNet121, InceptionV3, and a hybrid deep learning model

Cardiovascular diseases remain a leading cause of mortality worldwide, necessitating rapid and accurate diagnostic tools. Electrocardiogram (ECG) image analysis using deep learning offers a promising avenue for automated detection, yet model performance and generalizability requi...

UAV Imagery for Ground Vehicle Visual Localization: Reference Database Construction versus Query-Stage Matching

Accurate localization of unmanned ground vehicles (UGVs) is difficult in global navigation satellite system (GNSS)-denied urban environments, and high-definition maps involve substantial construction and maintenance costs.Image-based reference maps have been studied as a cost-eff...

The role of self-efficacy in shaping willingness to adapt for enhanced resilience among smallholder farmers in Limpopo, South Africa

Climate change adaptation research in sub-Saharan Africa has traditionally prioritised socio-economic and institutional drivers of actualized adaptation measures. However, the cognitive precursors specifically the moderating role of self-efficacy remain under-researched in “clima...

MeJA regulates aroma biosynthesis in kiwifruit during postharvest cold storage-to-shelf transition: An integrated volatilomics and transcriptomics analysis

This study aimed to clarify the regulatory effect of methyl jasmonate (MeJA) on the postharvest quality of cold-stored kiwifruit during shelf life. Physiological analyses showed that MeJA treatment significantly delayed fruit softening, suppressed ethylene production and respirat...

The Density-Gradient Law of Gravitation: Gravity as the Logarithmic Gradient of Ether Plenum Density, and the Derivation of Mercury's Precession From the Medium Alone, Without Spacetime Curvature

This paper reports two results. The first is an expression of gravitational attraction in terms of the medium alone. Rearranging the hydrostatic equilibrium condition already derived in this series, and substituting the equation-of-state parameter forced by the traceless stress-e...

Nurse-led preprocedural Valsalva maneuver training with a maximal expiratory pressure device during transesophageal echocardiography in South Korea: a quasi-experimental study

Purpose: This study examined the effects of preprocedural Valsalva maneuver (VM) training using a maximal expiratory pressure (MEP) device on VM performance and patient discomfort during transesophageal echocardiography (TEE).Methods: This study used a time-lagged, posttest-only,...