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장대성(Dae Sung Chang),심주현(Joo Hyun Shim),서성준(Seong Jun Seo),송계용(Kye Yong Song),홍창권(Chang Kwun Hong) 대한피부과학회 2001 대한피부과학회지 Vol.39 No.5
Lentigo maligna(LM) is a pigmented lesion that occurs on the sun-exposed skin of an older patients and may become lentigo maligna melanoma(LMM). Currently the percentage of LM type melanoma appears to be increasing, and this rise has been attributed to increasing UV radiation exposure. In addition to UV radiation, estrogen and progesterone, and nonpermanent hair dyes have been proposed as risk factors. A case is a 66-year-old female with a 3 years history of pigmented patch. She had a gradually enlarging irregular bordered brown to black mottled patch on the right temple area. Histologic examination revealed atypical melanocytes along the basal layer of atrophic epidermis, arranged in solitary units and small nests. Perilesional skin showed many scattered melanophages and regressing nevus cell nests which suggested preexisting nevus underwent regressive change. On the basis of clinicopathologic examination we diagnosed this case as lenigo maligna arising from nevocytic nevus and then we removed the lesion by wide surgical excision and could not find any recurrence until now.
한국 대학 교양교육에 만족을 주는 서비스 품질요인과 교육요인 및 단과대학별 만족도 분석 연구
장대성(Dae-Sung Chang),이정현(Jung-Hyun Lee),조영희(Young-Hee Cho) 한국컴퓨터정보학회 2010 韓國컴퓨터情報學會論文誌 Vol.15 No.6
본 연구는 한국 대학의 교양교육 서비스와 만족도에 관한 연구이다. 연구 분석 결과 학생들은 교수들의 공감성 및 신뢰성 그리고 모든 서비스 품질요인들에 만족을 하고 공부하고 싶은 과목과 학점취득이 쉬운 과목에 만족도가 높은 것으로 나타났다. 그러나 공부의 양과 수강생수의 규모 등 수업의 내용과 질에 영향을 줄 수 있는 교육 요인들은 만족도에 전혀 영향을 주고 있지 않다. 학생들은 좋아하는 과목을 교수들이 쉽고 편하게 자상하게 해주면서 학점을 잘 주면 만족도가 높아지는 것으로 나타났다. This study investigated the relation between the liberal arts education service and students' satisfaction. The results of the study show that students are satisfied with all of five service quality factors, students' intention of studying, full time instructors' teaching and high GPA in taking liberal arts classes. However, educational factors such as the quantity of home work, frequency of test and the size of class, which can influence the quality and contents of classes, do not impact the students' satisfaction of liberal arts education. The college students of Korea may tend to be more satisfied with the liberal arts classes which they feel easier to study and to get better grades.
철도차량용 유리의 기능 및 적용성에 관한 연구 (A study on the function and application of the glasses for rolling stock)
장대성(Dae-Sung Chang),이흥재(Heung-Jae Lee) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
In this paper, the area which some glasses of railway vehicle are applied to and the function & requirements of each glass would be studied, a sort of glass & up to date glasses and design propriety of railway vehicle’s glasses were also researched. And then the feasible application of up to date glasses for next developing rolling stock was studied.
증권회사 홈트레이딩 시스템(HTS)의 서비스 품질과 고객만족에 관한 연구
장대성(Dae-Sung Chang),노용휘(Yong-Hwi Noh),김두복(Doo-Bock Kim) 한국컴퓨터정보학회 2012 韓國컴퓨터情報學會論文誌 Vol.17 No.7
이 연구는 홈 트레이딩 시스템(HTS)의 서비스 품질요인을 파악하고, 파악된 품질요인과 HTS사용자의 만족도, 충성도와의 관계, 더 나아가 이런 요인들이 증권회사에 대한 고객 만족도와 충성도에 어떠한 영향을 미치는지에 대해 고찰하였다. (1) HTS 서비스 품질요인으로 PZB(1985)의 확신성, 신뢰성, 유형성, 반응성, 공감성의 다섯 가지 요인을 채택하였으며, (2) 이 요인들은 HTS 사용자 만족도와 증권회사에 대한 만족충성도에 유의한 영향을 미치는 것으로 나타났다. (3) 또한, 홈 트레이딩 시스템에 대한 사용자 만족도는 증권사에 대한 만족충성도에 유의한 영향을 미치는 것으로 나타났다. 본 연구는 현대 증권거래의 필수적 거래수단이 되고 있는 HTS의 품질요인과 이러한 요인들이 HTS와 증권회사에 대한 서비스 만족도와 충성도에 미치는 영향을 파악함으로써 증권회사의 실적 제고와 고객 서비스 향상에 기여하고자 한다. The purpose of this study is to investigate the home trading system (HTS) of the security companies in order to examine the critical factors of HTS service quality and the effect of these factors on HTS customer satisfaction and loyalty. The results show : (1) the quality factors of HTS are assurance, reliability, tangible, responsiveness, and empathy, (2) and these quality factors significantly affect customer satisfaction on HTS and customer satisfaction and loyalty to the security company. (3) Also, customer satisfaction on HTS plays an important role in improving customer satisfaction and loyalty to the security company.
한국 국제공항의 서비스품질 평가와 고객만족을 위한 주요서비스 품질요인에 관한 연구
장대성 ( Dae Sung Chang ) 한국품질경영학회 2002 품질경영학회지 Vol.30 No.4
This study was conducted to identify the differences in service quality between Incheon and Kimpo international airports and critical factors influencing satisfaction of their customers. According to the results of the study, all service quality factors of Incheon international airport except the service factor of geographical location were better than those of Kimpo international airport. However, all service quality factors of the two airports were evaluated inferior to those of American, western European and Japanese international airports. In addition the service quality factors such as response, safety, airport facility and geographical location were found as critical factors influencing satisfaction of the airport customers. The service quality factor of geographical location of Incheon international airport was measured much inferior comparing with other service quality factors. Thus, the results of this study suggest that the Korean government deliberate and benchmark the international airports of western Europe and the USA in determining the geographical location when planning new international airports.
아토피 피부염 환자에서 음식 항원에 대한 첩포 검사와 특이 IgE 치에 관한 연구
장대성(Dae Sung Chang),서성준(Seong Jun Seo),홍창권(Chang Kwun Hong) 대한피부과학회 2002 대한피부과학회지 Vol.40 No.9
N/A Background: Food allergies have been demonstrated to play an important role in the pathogenesis of atopic dermatitis(AD), affecting around 10 to 40% of patients with AD. While immediate-type clinical reactions to food can be easily be identified, the evaluation of a food allergy in the absence of immediate clinical reactions still presents diagnostic difficulties. Objective: The purpose of this study was to evaluate the diagnostic value of the atopy patch test with regard to late-phase reactions and to evaluate the relationship between patch test and specific serum IgE level. Methods: We performed the patch test and chemiluminescent assay(CLA) for food antigens(cow`s milk, soybean milk and hens egg) in 45 patients with AD who were suspicious of food-related symptoms and 15 normal controls. Results: 1. Positive reaction of CLA in 45 patients with AD were 7/18(38.9%) for the cow`s milk, 5/14(35.7%) for the soybean milk and 4/13(30.7%) for the hen`s egg. 2. Positive reaction of the patch test in patients with AD were 5/18(27.8%) for the cow`s milk, 6/14(42.9%) for soybean milk and 4/13(30.7%) for hens egg, but only one(6.7%) for cow`s milk in 15 normal controls. 3. A highly significant correlation to food antigens existed between patch test and CLA, but one patient showed a positive reaction in the patch test for soy n milk despite the negative reaction in CLA. 4. There was no significant statistical correlation between the severity of AD and the positive reaction rate of the patch test. 5. There were no significant statistical differences between the age of AD patients and the positive reaction rate of the patch test. Conclusion: The atopy patch test seems to be e valuable fool in the diagnostic work-up of food allergies in patients with AD-especially with regard to late-phase clinical reactions. (Korean J Dermatol 2002;40(9) : 1028-1034)
비호발 부위에 발생한 피지선암 2 예 - Muir - Torre 증후군 1 예 -
장대성(Dae Sung Chang),서성준(Seong Jun Seo),홍창권(Chang Kwun Hong) 대한피부과학회 2001 대한피부과학회지 Vol.39 No.5
Sebaceous carcinoma is a malignant tumor derived from the adnexal epithelium of sebaceous glands and is usually located on the meibomian glands of the eyelid, but may occur on the extraocular sites. We present two cases of sebaceous carcinoma developed on the unusual site. The first case was 66-year old woman, who had 2.2×3.0cm sized, yellowish, verrucous surfaced plaque on the abdomen for 20 years. The second case of 79-year old man had annular shaped erythematous greasy patch with peripherally located flat plaque on the left scapular area for 1 month. His past medical history included subtotal gastrectomy for early gastric cancer(type II a) and could not find any recurrence or metastasis for 4 years duration. The histopathologic examination revealed irregular, variable sized tumor lobules. Each lobule was composed of sebaceous and undifferentiated cells showing considerable variation in the shape and size of their nuclei and prominent nucleoli. On the basis of clinicopathologic examination we diagnosed first case as sebaceous carcinoma and second case as Muir-Torre syndrome.