A5000287084- Matrix Theory and Algorithms
- Educational Research and Pedagogy
- Fuzzy Logic and Control Systems
- Advanced Topics in Algebra
- Advanced Optimization Algorithms Research
- Spinal Fractures and Fixation Techniques
- Transportation Planning and Optimization
- graph theory and CDMA systems
- Education and Learning Interventions
- History and Theory of Mathematics
- Spine and Intervertebral Disc Pathology
- Advanced Vision and Imaging
- Neural Networks and Applications
- Education, Safety, and Science Studies
- Graph theory and applications
- Human Mobility and Location-Based Analysis
- Urban Transport and Accessibility
- Educational Systems and Policies
- Video Surveillance and Tracking Methods
- Organic Electronics and Photovoltaics
- Iterative Methods for Nonlinear Equations
- Rings, Modules, and Algebras
- Artificial Intelligence in Games
- Conducting polymers and applications
- Educational Technology and Assessment
Korea Testing Laboratory
2021-2025
Sungkyunkwan University
2008-2024
Seoul National University
2022
National Research Institute of Fire and Disaster
2022
New York City Fire Department
2022
Gachon University
2022
Korea University
2019-2021
Samsung (South Korea)
2020
Gachon University Gil Medical Center
2006-2019
Mongolian National University of Education
2019
As fare and data collection technology has developed, the resolution of collected reached level individual traveler in investigations transit passenger behavior. This paper investigates use these to estimate origins destinations at stops. Because a lack information from system, researchers still need some passengers' alighting stops complete each trip chain on specific day. Automated (AFC) automated vehicle location (AVL) systems are inputs estimation. Instead typical AVL data, proposes two...
Face masks will be used to prevent pandemic recurrence and outbreaks of mutant SARS-CoV-2 strains until mass immunity is confirmed. The polypropylene (PP) filter a representative disposable mask material that traps virus-containing bioaerosols, preventing secondary transmission. In this study, copper thin film (20 nm) was deposited via vacuum coating on spunbond PP surrounding KF94 face provide additional protection lower the risk Film adhesion improved using oxygen ion beam pretreatment,...
In this study, a drone-based measurement system equipped with miniaturized optical and condensation particle counters was deployed to investigate the vertical distribution of particulate matter meteorological variables up 2.5 km in altitude. Measurements captured at various altitudes demonstrated notable variations concentration significant correlations factors, particularly relative humidity (RH). Near surface, within well-mixed boundary layer, concentrations remained stable despite RH...
In this article, we consider the finite-dimensional dynamical control systems described by non-linear impulsive stochastic differential equations. Sufficient conditions for complete and approximate controllability of are formulated proved under natural assumption that corresponding linear system is appropriately controllable.
Cerebrospinal fluid (CSF) leakage is a potential complication of cranial and spinal surgery. Postoperative CSF can induce delayed healing, wound infection meningitis. DuraSeal® (Covidien, Waltham, MA, USA) synthetic product which has been increasingly used to facilitate watertight repair dural defects after Despite some advantages Duraseal®, the authors report patient who developed cord compression following use in cervical spine surgery expansion was believed be causative factor.
A simple but efficient algorithm is proposed for finding the optimal path in an intermodal urban transportation network. The network a general with multiple modes (auto, bus, rail, walk, etc.) divided into two major categories of private and public, proper transfer constraints. goal was to find according generalized cost, including private-side travel public-side cost. detailed model transfers between used improve accounting times during these transfers. sequential application specific cases...
In Korea, early vertebroplasty (EVP) or delayed (DVP, which is performed at least 2 weeks after diagnosis) were for the treatment of acute osteoporotic compression fracture (OCF) spine. The present study compared outcomes two surgical strategies single-level OCF in thoracolumbar junction (T12-L2).From 2004 to 2010, 23 patients allocated EVP group (EVPG) and 27 DVP (DVPG). Overall mean age was 68.3±7.9 minimum follow-up period 1.0 year. Retrospective clinical radiological results conducted.No...
We are exploring ways to capture the temporal and spatial dimensions of use public transit. Specifically, we investigating how different land uses affect demand for transit services. Spatially, availability new data collection technology in allows us examine at individual stop level. Our hypothesis, however, is that users' activity may not be originated from or destined an per se; rather, associated with a specific location vicinity stop, this "covered" by several adjacent stops. More...
A Solitary Fibrous Tumor (Sft) Is Rare Neoplasm Originated From The Pleura, But They Can Occur In Variety Of Extrathoracic Regions. Although Many Cases Primary Sft Have Been Reported, There Are Extremely Repots To Date Malignant Spine Or Skull. 54-year-woman Visited Our Hospital Due Low Back Pain And Both Leg Radiating Pain. Several Imaging Studies Including Magnetic Resonance Computed Tomography Revealed Expansive Enhanced Lesions Occipital Bone, T8, S1-2, Ilium, With Neural Tissue...
Alcohol causes damage to the brain and is associated with various functional impairments. However, much of can be reversed by abstaining for enough time. This study aims investigate patterns degrees function in abstinent patients alcohol dependence using resting-state connectivity.26 male (alcohol group) 28 age-matched healthy volunteers (control were recruited from a mental hospital community, respectively. Using 3T MRI scan data, connectivity task-negative task-positive networks was...
Traumatic atlanto-occipital dislocation (AOD) results from high energy trauma and is an uncommon usually fatal injury due to the cervicomedullary junction. Recently, improved prehospital management, early diagnosis effective treatment led increasing reports of survival. This study patients with AOD initial imaging modalities recognizes clinical features diagnostic considerations for a quick diagnosis.
The development and the application of a stop aggregation model (SAM) for transit network based on Google's General Transit Feed Specification (GTFS) are detailed. use GTFS has been drawing attention in public planning arena. A SAM is proposed to explore how this innovative data source network. hypothesis fact that users' activity may not originate from or be destined an individual per se. Rather, associated with specific location vicinity stop, covered by several adjacent stops. Therefore,...
ABSTRACT Poliovirus has been studied as a live recombinant vaccine vector because of its attractive characteristics. The genetic instability, however, hampered polioviruses (PVs) from being developed an appropriate vaccine. A variety different foreign inserts were cloned directly into our poliovirus Sabin 1-based RPS-Vax system, resulting in the production PVs. stability each PV was examined during 12 rounds consecutive passage. It found that recombinants not well correlated with their...