Jin Yong Lee, Su Jin Hwang, Jae Won Shim, Hye Lim Jung, Moon Soo Park, Hee Yeon Woo, Jung Yeon Shim,
Jin Yong Lee, M.D., Su Jin Hwang, M.D., Jae Won Shim, M.D., Hye Lim Jung, M.D., Moon Soo Park, M.D., Hee Yeon Woo, M.D., and Jung Yeon Shim, M. ...
Tópico(s): Nosocomial Infections in ICU
2010 - Seoul National University | Annals of Laboratory Medicine
Jeong Yeon Hwang, Jae‐Won Choi, Seung‐Gul Kang, Su Hwan Hwang, Seog Ju Kim, Yu Jin Lee,
The aim of this study was to evaluate the effects of quetiapine XR and lithium on actigraphy-measured circadian parameters in patients with bipolar II depression.This was an 8-week, open-label, prospective, randomized comparative study. The assessments included the 17-item Hamilton Depression Rating Scale score and actigraphic measures concerning the previous 7 days, collected at each visit (weeks 0 [baseline], 1, 2, 4, 6, and 8); the actigraphic data were analyzed with a cosinor analysis.Medication, ...
Tópico(s): Circadian rhythm and melatonin
2017 - Lippincott Williams & Wilkins | Journal of Clinical Psychopharmacology
Sung Han Kang, Hyun Ju Hwang, Jae Won Yoo, Hyery Kim, Eun Seok Choi, Sang‐Hyun Hwang, Young‐Uk Cho, Seongsoo Jang, Chan‐Jeoung Park, Ho Joon Im, Jong Jin Seo, Nayoung Kim, Kyung‐Nam Koh,
Possible correlations between the expression of immune checkpoint molecules and prognosis in childhood acute leukemia were investigated.The expression of programmed-death 1 (PD1), cytotoxic T-lymphocyte-associated protein 4 (CTLA-4), and B- and T-lymphocyte attenuator (BTLA) was determined by flow cytometry on peripheral αβ+ and γδ+ T-cells from patients with newly diagnosed acute lymphoblastic leukemia (ALL) (n=9) or acute myeloid leukemia (AML) (n=12), and from healthy volunteers (n=7). The expression ...
Tópico(s): Cancer Immunotherapy and Biomarkers
2019 - International Institute of Anticancer Research (IIAR) Conferences 1997. Athens, Greece. Abstracts | Anticancer Research
The carousel storage system is an automated storage/retrieval system; it has been widely used in a broad range of applications. This paper examines the throughput performance of the single/double carousel system in which a storage/retrieval machine performs pickup/discharge operations. As a job dispatch and control rule, it is assumed that the information on the rack location of the succeeding job orders is available, this assumption commonly holds in real-world operations. Based on a randomized ...
Tópico(s): Optimization and Packing Problems
1991 - Elsevier BV | International Journal of Production Economics
Kyu-Baek Hwang, Jae‐Won Lee, Seung-Woo Chung, Byoung‐Tak Zhang,
Most existing algorithms for structural learning of Bayesian networks are suitable for constructing small-sized networks which consist of several tens of nodes. In this paper, we present a novel approach to the efficient and relatively-precise induction of large-scale Bayesian networks with up to several hundreds of nodes. The approach is based on the concept of Markov blanket and makes use of the divide-and-conquer principle. The proposed method has been evaluated on two benchmark datasets and ...
Tópico(s): Rough Sets and Fuzzy Logic
2002 - Springer Science+Business Media | Lecture notes in computer science
Insuk Sohn, Sujong Kim, Changha Hwang, Jae Won Lee,
There are many sources of systematic variations in cDNA microarray experiments which affect the measured gene expression levels. Print-tip lowess normalization is widely used in situations where dye biases can depend on spot overall intensity and/or spatial location within the array. However, print-tip lowess normalization performs poorly in situations where error variability for each gene is heterogeneous over intensity ranges. We first develop support vector machine quantile regression (SVMQR) ...
Tópico(s): Genetic and phenotypic traits in livestock
2008 - Elsevier BV | Computational Statistics & Data Analysis
Yoo Seob Shin, Hyun Jun Hong, Yoon Woo Koh, Woong Youn Chung, Hye Yeon Lee, Jae Min Hong, Chi Sang Hwang, Jae Won Chang, Eun Chang Choi,
We hypothesized that comprehensive neck dissection could be achieved via a gasless transaxillary approach using a robotic system. We intended to evaluate the accessibility of level I, IIB and VA nodes with transaxillary robot-assisted neck dissection of four cadavers.Transaxillary robotic neck dissection was performed in four cadavers through a 7-cm longitudinal incision at the anterior axilla and a 0.8-cm-sized incision in the chest wall.We successfully performed neck dissection from level II to ...
Tópico(s): Management of metastatic bone disease
2011 - Yonsei University College of Medicine | Yonsei Medical Journal
Yoo Seob Shin, Seungjin Song, Sung Un Kang, H.S. Hwang, Jae Won Choi, B.H. Lee, Young Sik Jung, Chul‐Ho Kim,
Cisplatin, a chemotherapeutic agent for treating various solid tumors, produces hearing loss in approximately half a million cancer patients annually in the United States. In the course of developing a new protective agent against cisplatin-induced ototoxicity, we have been interested in a novel synthetic compound, 3-amino-3-(4-fluoro-phenyl)-1H-quinoline-2,4-dione (KR-22332). The effect of KR-22332 on cisplatin-induced cytotoxicity was analyzed in vitro in an organ of Corti-derived cell line (HEI- ...
Tópico(s): Hearing, Cochlea, Tinnitus, Genetics
2012 - Elsevier BV | Neuroscience
Il-Kyu Yoon, Ji‐Young Hwang, Jae‐Won Seo, Won‐Cheoul Jang, Hae‐Won Kim, Ueon Sang Shin,
Tópico(s): Collagen: Extraction and Characterization
2014 - Elsevier BV | Carbon
Seong Yeol Kim, Ji‐Young Hwang, Jae‐Won Seo, Ueon Sang Shin,
We describe a one-pot method for the mass production of polymeric microspheres containing water-soluble carbon-nanotube (w-CNT)-taxol complexes using an ammonium-based room temperature ionic liquid. Polycaprolactone (PCL), trioctylmethylammonium chloride (TOMAC; liquid state from −20 to 240 °C), and taxol were used, respectively, as a model polymer, room temperature ionic liquid, and drug. Large quantities of white colored PCL powder without w-CNT-taxol complexes and gray colored PCL powders containing ...
Tópico(s): Conducting polymers and applications
2014 - Elsevier BV | Journal of Colloid and Interface Science
Jae Hun Jung, Yong Woo Ji, Ho Sik Hwang, Jae Won Oh, Hyeon Chang Kim, Hyung Keun Lee, Kwang Pyo Kim,
To understand the pathophysiology of dry eye disease (DED), it is necessary to characterize proteins in the ocular surface fluids, including tear fluid (TF) and lacrimal fluid (LF). There have been several reports of TF proteomes, but few proteomic studies have examined LF secreted from the lacrimal gland (LG). Therefore, we characterized the proteins constituting TF and LF by liquid chromatography mass spectrometry. TF and LF were collected from patients with non-Sjögren syndrome DED and from healthy ...
Tópico(s): Glaucoma and retinal disorders
2017 - Nature Portfolio | Scientific Reports
Kyoung-Sub Hwang, Jae-Won Choi, Jae‐Hun Kim, Ho Yun Chung, Songwan Jin, Jin‐Hyung Shim, Won‐Soo Yun, Chang-Mo Jeong, Jung‐Bo Huh,
The purpose of this study was to compare bone regeneration and space maintaining ability of three-dimensional (3D) printed bone grafts with conventional biphasic calcium phosphate (BCP). After mixing polycaprolactone (PCL), poly (lactic-co-glycolic acid) (PLGA), and β-tricalcium phosphate (β-TCP) in a 4:4:2 ratio, PCL/PLGA/β-TCP particulate bone grafts were fabricated using 3D printing technology. Fabricated particulate bone grafts were mixed with atelocollagen to produce collagen-based PCL/PLGA/β-TCP ...
Tópico(s): Collagen: Extraction and Characterization
2017 - Multidisciplinary Digital Publishing Institute | Materials
Heenam Yoon, Su Hwan Hwang, Jae‐Won Choi, Yu Jin Lee, Do-Un Jeong, Kwang Suk Park,
We developed an automatic algorithm to determine rapid eye movement (REM) sleep on the basis of the autonomic activities reflected in heart rate variations.The heart rate variability (HRV) parameters were calculated using the R-R intervals from an electrocardiogram (ECG). A major autonomic variation associated with the sleep cycle was extracted from a combination of the obtained parameters. REM sleep was determined with an adaptive threshold applied to the acquired feature. The algorithm was optimized ...
Tópico(s): Sleep and Wakefulness Research
2017 - IOP Publishing | Physiological Measurement
Heenam Yoon, Su Hwan Hwang, Jae-Won Choi, Yu Jin Lee, Do‐Un Jeong, Kwang Suk Park,
We developed an automatic slow-wave sleep (SWS) detection algorithm that can be applied to groups of healthy subjects and patients with obstructive sleep apnea (OSA). This algorithm detected SWS based on autonomic activations derived from the heart rate variations of a single sensor. An autonomic stability, which is an SWS characteristic, was evaluated and quantified using R-R intervals from an electrocardiogram (ECG). The thresholds and the heuristic rule to determine SWS were designed based on the ...
Tópico(s): EEG and Brain-Computer Interfaces
2017 - Institute of Electrical and Electronics Engineers | IEEE Journal of Biomedical and Health Informatics
Ji-Hye Kang, Ji‐Young Hwang, Jae‐Won Seo, Han‐Sem Kim, Ueon Sang Shin,
In recent years, there has been a significant increase in strategies for the development of small intestine (and colon)-specific oral drug-delivery systems to maximize the efficiency of therapeutic agents and reduce side effects. However, only a few strategies are capable of working in the complicated environment of the human intestinal tract. In this study, the preparation of a basic pH/temperature-responsive co-polymer (p-NIVIm) and its in-vitro-drug delivery function in the pH range of 1–8 and ...
Tópico(s): Nanoparticle-Based Drug Delivery
2018 - Elsevier BV | Materials Science and Engineering C
Shin Hwang, Jae‐Won Joh, Hee-Jung Wang, Dong Goo Kim, Kyung Sik Kim, Kyung‐Suk Suh, Seong Hoon Kim, Hee Chul Yu, Chol Kyoon Cho, Young Joo Lee, Ki‐Hun Kim, J. M. Kim, Bong‐Wan Kim, Sung‐Gyu Lee,
Tópico(s): Cancer, Lipids, and Metabolism
2018 - Springer Science+Business Media | World Journal of Surgery
Yang-kyu Park, Mathew J. Boyer, Gyeong S. Hwang, Jae‐won Lee,
A mixture of silicon (Si) and silicon suboxide (SiOx, x < 2) phases is prepared from talc by magnesio-thermal reduction and acid etching processes. Talc is a clay mineral composed of hydrated magnesium silicate and is one of the most abundant minerals on earth. The reduced Si/SiOx nanoparticles are found to be porous after acid etching and are closely connected. The Si/SiOx particles are supported on a carbon layer which imparts them with electronic conductivity and improved durability towards stresses ...
Tópico(s): Extraction and Separation Processes
2018 - Elsevier BV | Journal of Electroanalytical Chemistry
Hyunseo Kang, Mathew J. Boyer, Gyeong S. Hwang, Jae‐won Lee,
The realization of using lithium metal as an anode for secondary lithium batteries has been hindered by the formation of lithium dendrites during cycling, which can cause loss of active material, increased impedance, and even cell failure. In this study, lithium is coated onto a carbon cloth modified with lithiophilic ZnO coating. The Li/ZnO-coated carbon cloth is tested as a lithium metal anode and compared to lithium-metal foil. X-ray diffraction and scanning electron microscopy examinations reveal ...
Tópico(s): Advanced Battery Technologies Research
2019 - Elsevier BV | Electrochimica Acta
Bora Yoon, Seong Hye Choi, Jee Hyang Jeong, Kyung Won Park, Eun‐Joo Kim, Jihye Hwang, Jae‐Won Jang, Hee Jin Kim, Jin Yong Hong, Jong‐Min Lee, Ju-Hee Kang, Soo Jin Yoon,
Background:Balance impairments are common in patients with Alzheimer’s disease (AD) dementia. Objective:We sought to determine the stage along the AD spectrum during which balance impairments appear and identify factors associated with a decline in balance function. Methods:Our cross-sectional stud y included 295 participants; 71 were cognitively normal (CN), 96 reported subjective cognitive decline (SCD), 72 had amnestic mild cognitive impairment (MCI), and 56 had AD dementia. The balance and mobility ...
Tópico(s): Stroke Rehabilitation and Recovery
2019 - IOS Press | Journal of Alzheimer s Disease
Faez Alkadi, Jeongwoo Lee, Jun-Seok Yeo, Seok‐Ho Hwang, Jae‐Won Choi,
Tópico(s): biodegradable polymer synthesis and properties
2019 - Springer Science+Business Media | International Journal of Precision Engineering and Manufacturing-Green Technology
Hye Suk Hwang, Jae Won Jeong, Yoong Ahm Kim, Mincheol Chang,
A biosensor is defined as a measuring system that includes a biological receptor unit with distinctive specificities toward target analytes. Such analytes include a wide range of biological origins such as DNAs of bacteria or viruses, or proteins generated from an immune system of infected or contaminated living organisms. They further include simple molecules such as glucose, ions, and vitamins. One of the major challenges in biosensor development is achieving efficient signal capture of biological ...
Tópico(s): Graphene and Nanomaterials Applications
2020 - Multidisciplinary Digital Publishing Institute | Micromachines
Jung Han Hwang, Jae Won Seo, Jeong Ho Kim, Suyoung Park, Young Jae Kim, Kwang Gi Kim,
In this study, we aimed to investigate quantitative differences in performance in terms of comparing the automated classification of deep vein thrombosis (DVT) using two categories of artificial intelligence algorithms: deep learning based on convolutional neural networks (CNNs) and conventional machine learning. We retrospectively enrolled 659 participants (DVT patients, 282; normal controls, 377) who were evaluated using contrast-enhanced lower extremity computed tomography (CT) venography. Conventional ...
Tópico(s): Cardiac Imaging and Diagnostics
2022 - Multidisciplinary Digital Publishing Institute | Diagnostics
Pyeong Hwa Kim, Hee Mang Yoon, Jeong Rye Kim, Jae‐Yeon Hwang, Jin‐Ho Choi, Jisun Hwang, Jae-Won Lee, Jinkyeong Sung, Kyu-Hwan Jung, Byeonguk Bae, Ah Young Jung, Young Ah Cho, Woo Hyun Shim, Boram Bak, Jin Seong Lee,
To develop a deep-learning-based bone age prediction model optimized for Korean children and adolescents and evaluate its feasibility by comparing it with a Greulich-Pyle-based deep-learning model.A convolutional neural network was trained to predict age according to the bone development shown on a hand radiograph (bone age) using 21036 hand radiographs of Korean children and adolescents without known bone development-affecting diseases/conditions obtained between 1998 and 2019 (median age [interquartile ...
Tópico(s): Autopsy Techniques and Outcomes
2023 - Korean Society of Radiology | Korean Journal of Radiology
Byeong Hee Hwang, Jae‐Won Lee, Hyung Joon,
Tópico(s): Salmonella and Campylobacter epidemiology
2009 - Springer Science+Business Media | Applied Biochemistry and Biotechnology
Hye Soo Yoo, Yun Sil Chang, Jin Kyu Kim, So Yoon Ahn, Eun Sun Kim, Dong Kyung Sung, Ga Won Jeon, Jong Hee Hwang, Jae Won Shim, Won Soon Park,
Intrauterine infection can exacerbate postnatal hyperoxic lung injury. We hypothesized that antenatal betamethasone treatment attenuates hyperoxic lung injury aggravated by intrauterine infection in neonatal rats. Newborn Sprague-Dawley rats were divided into eight experimental groups according to (i) whether rats were exposed to normoxia (N) or hyperoxia (H, 85% oxygen) from postnatal day (P)1 to P14, (ii) whether antenatal betamethasone (0.2 mg/dose) or vehicle was administered to pregnant rats at gestation ...
Tópico(s): Congenital Diaphragmatic Hernia Studies
2013 - Springer Nature | Pediatric Research
Tae Hyuk Kim, Byoung‐Soo Yu, Hyun Woo Ko, Na Won Park, Muhammad Ahsan Saeed, Jongtae Ahn, Suyeon Jo, Dae‐Yeon Kim, Seon Kyu Yoon, Kwang‐Hoon Lee, Sang Young Jeong, Han Young Woo, Hyunwoo J. Kim, Tae Geun Kim, Jaehong Park, Min‐Chul Park, Do Kyung Hwang, Jae Won Shim,
Abstract The development of organic‐based optoelectronic technologies for the indoor Internet of Things market, which relies on ambient energy sources, has increased, with organic photovoltaics (OPVs) and photodetectors (OPDs) considered promising candidates for sustainable indoor electronic devices. However, the manufacturing processes of standalone OPVs and OPDs can be complex and costly, resulting in high production costs and limited scalability, thus limiting their use in a wide range of indoor ...
Tópico(s): Infrared Target Detection Methodologies
2023 - | Advanced Materials
Dae Sik Jeong, Jae Won Hwang, Byung Jun Kang, Kang Ryoung Park, Chee Sun Won, Dong-Kwon Park, Jaihie Kim,
Many researchers have studied iris recognition techniques in unconstrained environments, where the probability of acquiring non-ideal iris images is very high due to off-angles, noise, blurring and occlusion by eyelashes, eyelids, glasses, and hair. Although there have been many iris segmentation methods, most focus primarily on the accurate detection with iris images which are captured in a closely controlled environment. This paper proposes a new iris segmentation method that can be used to accurately ...
Tópico(s): User Authentication and Security Systems
2009 - Elsevier BV | Image and Vision Computing
Jeong Yong Lee, Ji Eun Kim, Tae Hee Han, Jae Won Hwang, Seokwoo Jeon, Sung‐Yool Choi, Soon Hyung Hong, Won Jong Lee, Rodney S. Ruoff, Sang Ouk Kim,
A hybrid system with vertical carbon nanotubes (CNTs) grown on reduced graphene films composed of overlapping and reduced graphene oxide platelets is reported. Such carbon hybrid films have excellent flexibility and stretchability (see image), can be readily transferred to any substrate including nonplanar surfaces, and were found to have Ohmic electrical contacts throughout all junctions in the CNT/metal-catalyst/graphene-film system. Detailed facts of importance to specialist readers are published ...
Tópico(s): Thermal properties of materials
2010 - | Advanced Materials
Seongwoo Ryu, Yuhan Lee, Jae‐Won Hwang, Seonki Hong, Chun-Soo Kim, Tae Gwan Park, Haeshin Lee, Soon Hyung Hong,
Super-strong carbon nanotube (CNT) fibers are fabricated by infiltration of the mussel-inspired underwater adhesives, poly(ethylenimine)-catechols (PEI-Cs). PEI-C mimics the amino acid sequence of mussel adhesive proteins in which catechols from 3,4- dihydroxyl-L-phenylalanine and amines from lysine are found. Weak interactions between CNTs are overcome by heat-induced, metal-catalyzed chemical crosslinking of catechol. PEI-C’s strong and versatile adhesion results in high-strength CNT fibers. Detailed ...
Tópico(s): Force Microscopy Techniques and Applications
2011 - | Advanced Materials
Sung‐Ho Kook, Daewoo Lee, Eui‐Sic Cho, Jung Sun Heo, Sher Bahadur Poudel, Yu-Hyeon Ahn, Jae-Won Hwang, Hyeok Ji, Jong‐Ghee Kim, Jeong‐Chae Lee,
Tópico(s): Cancer-related gene regulation
2015 - Springer Science+Business Media | Molecular and Cellular Biochemistry