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정석현,명노해,전윤우,Jeong, Seok-Hyeon,Myeong, No-Hae,Jeon, Yun-U 대한인간공학회 2004 大韓人間工學會誌 Vol.23 No.3
Icons are the main element of the graphic user interface (GUI). They can help users perform effectively on the computer, especially when the icons reflect user`s mental model. However, few studies in Korea represented Korean users` mental models in icon design. The purpose of this study, therefore, was to ascertain whether existing icons agreement with Korean twentieth mental model, and to deduce properties of Korean twentieth mental model. To do that, 10 icons from two commercially available toolbar-icons of word processing programs were compared with the newly developed icons, which were developed to represent Korean user`s mental modelthrough interviews, surveys, and mental model sketches. The results show that five new metaphors were found: a dog-eared part on the bottom right corner new for new document, a magnifying glass for search, a red pencil for spell-check, `+` and `` signs in the magnifying glass for zoom, and a yellow post-it for paste. These new icons were preferred to the existing. Korean twentieth users preferred rather complex and dynamic icons than simple and static ones even though icon development guideline said simple icons are better.
정석현,김수영,이현,함준수,황금빛,신선혜,정명진,이승헌,신성재,고원중 대한결핵및호흡기학회 2015 Tuberculosis and Respiratory Diseases Vol.78 No.4
This is a report of the first South Korean case of a lung disease caused by Mycobacterium simiae . The patient was a previously healthy 52-year-old female. All serial isolates were identified as M. simiae by multi-locus sequencing analysis, based on hsp65 , rpoB , 16S-23S rRNA internal transcribed spacer, and 16S rRNA fragments. A chest radiography revealed deterioration, and the follow-up sputum cultures were persistently positive, despite combination antibiotic treatment, including azithromycin, ethambutol, and rifampin. To the best of our knowledge, this is the first confirmed case of a lung disease caused by M. simiae in South Korea.
정석현,강경중,류동수 대한비뇨의학회 2005 Investigative and Clinical Urology Vol.46 No.7
Purpose: We assessed the usefulness of manual reduction in patients with an acute scrotum. Materials and Methods: We retrospectively analyzed the data of 61 consecutive males who had undergone surgical exploration for an impression of testicular torsion, focusing on the incidence, duration of symptoms, direction of testicular torsion and results of manual reduction. Of the 61 explorations, there were 46(75.4%) and 15(24.6%) cases of testicular torsion and torsion of a testicular appendage, respectively. Results: Of the 46 testicular torsions, the symptoms were localized to the left side in 37 and to the right side in 9. While the mean symptom duration of the 31 in the orchiectomy group(89 hours) was significantly longer than that in the 15 salvaged testes(10 hours, p=0.003), the mean degree of rotation between the two groups was not significant(p=0.196). Information on the direction of testicular rotation was available in 44 cases, with medial rotation having occurred in 31(70.5%) and lateral rotation in 13 cases. The clinical symptoms were improved in 4 of the 20 patients in who manual reduction was attempted; residual torsion was identified in 2 patients. Conclusions: Manual detorsion, the fastest way to relieve testicular ischemia, should be performed at an early offstage following presentation. However, in attempting the manual reduction, the urologist should consider the possibility that a quarter of patients with an acute scrotum do not have testicular torsion, with 30% of testicular torsions occurring in the lateral direction. Surgical exploration remains necessary to confirm the causes of an acute scrotum and to correct any residual torsion.