Jeong-Seob Yoon

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A bookmark means the URL information stored for memorizing a user's own footprints and revisiting that website. This paper regards this bookmark as one of the evidences representing user preferences. An original bookmark indicating only address information is categorized for merging semantic meanings by using public web directory services. These categorized(More)
BACKGROUND Reexpansion pulmonary edema (REPE) is known as a rare and fatal complication after tube thoracostomy. OBJECTIVES We investigated the risk factors for the development of REPE in patients with spontaneous pneumothorax. METHODS We selected patients who were diagnosed with spontaneous pneumothorax and were initially treated with tube thoracostomy(More)
BACKGROUND Development of thoracic aortic aneurysms and aortic dissections (TAAD) is attributed to unbearable wall tension superimposed on defective aortic wall integrity and impaired aortic repair mechanisms. Central to this repair mechanisms are well-balanced and adequately functional cellular components of the aortic wall, including endothelial cells,(More)
BACKGROUND The aim of the present study was to identify chromosomal loci that contribute to the pathogenesis of aortic dissection (AD) in a Korean population using array comparative genomic hybridization (CGH) and to confirm the results using real-time polymerase chain reaction (PCR). MATERIALS AND METHODS Eighteen patients with ADs were enrolled in this(More)
A 68-yr-old man complaining of sudden, postprandial chest pain visited the emergency room. His symptom had been aggravated during the preceding two days. Upper gastrointestinal contrast study with gastrographin showed leakage of dye from the epiphrenic diverticulum in the lower third of the esophagus. The primary repair was urgently carried out. Upper(More)
The knowledge management in e-learning systems is classified into knowledge about students, strategies of teaching and learning, management of the learning content, and the system management. The construction of the student's knowledge, namely the student model, is a core component used to develop an intelligent e-learning system. The student model can be(More)
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