A case of green nail syndrome with onychomycosis

( Joongoon Kim ),( Moonhyung You ),( Yeonwoong Kim ),( Byeongsu Kim ),( Donghoon Shin ),( Jongsoo Choi ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Green nail syndrome is characterized by greenish discoloration of the nail. It is caused by Pseudomonas aeruginosa which is an aerobic gram-negative rod found in moist environment. Trauma of the nail and exposure to water are common predisposing factors of green nail syndrome. A 66-year-old woman developed an asymptomatic greenish discoloration of the nail plate of the right great finger nail over a period of 20 days. Dermatologic examination showed onycholysis and many hyphae were seen in KOH examination. Pseudomonas aeruginosa was identified by bacterial culture and susceptible to ciprofloxacin. We prescribed oral ciprofloxacin, oral terbinafine and topical hexamedine. Three weeks later, the nail discoloration was improved significantly. Detailed medical history should be obtained because green nail syndrome often can be developed following trauma, periungal infection and inflammatory skin disease. In case of the green nail syndrome with onychomycosis, identifying causative organism is necessary to choose appropriate treatment.

미연성 냉매를 적용한 공조시스템의 설계 및 설치 가이드

김병수(Byeongsu Kim),정한솔(Han Sol Jung),강용태(Yong Tae Kang),김용찬(Yongchan Kim) 대한설비공학회 2018 대한설비공학회 학술발표대회논문집 Vol.2018 No.11

A case of keratoacanthoma successfully treated with intralesional methotrexate

( Joongoon Kim ),( Moonhyung You ),( Yeonwoong Kim ),( Byeongsu Kim ),( Donghoon Shin ),( Jongsoo Choi ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Solitary keratoacanthoma is a rather common, rapidly growing neoplasm appearing mainly on sun-exposed areas of the skin in elderly, light-complexioned person. The majority of these lesions occur on the face, forearms, and hands. It is thought that intralesional methotrexate is effective as nonsurgical treatment of keratoacanthoma. A 85-year-old female presented with history of a rapidly growing 1.5cm-sized mass on the right submandible for 2 months. Histopathologic examination showed eosinophilic and glassy cell within shell and resulted in diagnosis of keratoacanthoma. We performed methotrexate injection with 0.1cc (50mg/2cc) each, four times in a row, with an interval of 3 weeks between inspections. After 6 weeks of treatment, the skin lesion had almost completely resolved. We report a case of keratoacanthoma which was successfully treated by intralesional methotrexate. Intralesional methotrexate can promote rapid improvement so in patient with cosmetic concern, we recommend intralesional methotrexate as nonsurgical treatment of keratoacanthoma.

공기업 CEO의 출신배경이 정책기여도 및 업무효율성에 미치는 영향: 정부권장정책 및 업무효율 점수를 중심으로

김병수 ( Kim Byeongsu ) 한국거버넌스학회 2017 한국거버넌스학회보 Vol.24 No.2

본 연구는 공기업 CEO의 출신배경이 공기업의 정책기여도와 업무효율성에 어떠한 영향을 미치는 지를 실증 분석하였다. 본 연구의 조사 대상은 공기업으로 지정된 27개 기관이며 총 표본 수는 108개였다. 분석 대상 연도 범위는 2011년부터 2014년까지 4개 연도였다. 그 결과 내부승진 출신 CEO에 비하여 정치인 및 민간 출신 CEO들의 정부권장정책 점수가 더 낮았으며, 그 가운데 정치인 출신 CEO의 점수가 가장 낮았다. 특히 정치인 출신 CEO는 임기가 지날수록 정부권장정책 점수가 감소하는 경향이 나타났다. 또한 내부승진 출신 CEO에 비하여 정치인, 관료 출신 CEO가 소속된 공기업의 업무효율 점수가 더 낮았고, 정부권장정책 점수 경우와 마찬가지로 정치인 출신 CEO가 가장 낮은 점수를 보였다. 이를 통하여 내부승진 출신 CEO가 타 출신 CEO에 비하여 높은 정책기여도와 업무효율성을 달성한 반면, 정치인 출신 CEO는 타 출신에 비해 정책기여도와 업무효율성 모두 가장 낮은 성과를 보였음을 확인하였다. 이 같은 연구 결과는 공기업 CEO 인선 시 정밀한 자질 검증이 필요함을 시사한다. This article analyzes the impact of a career background of the CEO of state-owned companies on the level of policy contribution and work efficiency. The background of the CEOs is classified into an insider, a politician, a public administrative officer, and a private worker according to their career. The level of policy contribution is measured by the score of `Policy enforced by the government` in the management performance assessment of the state-owned companies for 2011 - 2014. The level of work efficiency is measured by the score of `Work Efficiency` in the in the management performance assessment of the state-owned companies for 2011 - 2014. This article takes CEO`s term, history of the state-owned company, debt-to-asset ratio, the number of employees, the amount of the asset into consideration for control variables. Year and companies are also considered for the fixed effect. The research subjects of this article are 27 state-owned companies in Korea for 4 years(the total number of observation is 108). The conclusion of the analysis is as following. The score of `Policy enforced by the government` from the CEOs having political or private work experience is inferior to that of it from the CEOs who are promoted in the inside. The CEOs from the politic background have the lowest performances on policy contribution. Especially, the score of `Policy enforced by the government` from the CEOs who have political background is getting worse as the CEOs` term increases. Similarly, The score of `Work Efficiency` from the CEOs who were politicians or public administrative officers work experience is inferior to that of it from the CEOs who are promoted in the inside. The CEOs from the politic background also have the lowest performances on work efficiency.

A case of adult onset rhabdomyomatous mesenchymal hamartoma

( Joongoon Kim ),( Moonhyung You ),( Yeonwoong Kim ),( Byeongsu Kim ),( Donghoon Shin ),( Jongsoo Choi ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Rhabdomyomatous mesenchymal hamartoma is an uncommon benign lesion, which is usually congenital, polypoid. This lesion is primarily located on the head and neck. This hamartoma typically presents as a nodule or skin tag, but has also been described as a solitary indurated plaque or depressed plaque. The critical histopathologic finding is the existence of individualized fascicles of striated muscle affecting the dermis and subcutaneous fat tissue. A 39-year-old male presented with a single walnut sized normal skin colored soft elevated plaque on the chin for about 2 years. We performed punch biopsy, and histopathologic exam showed skeletal muscles and adipose tissues in the dermis. Because of cosmetic morbidity due to large size of hamartoma, he didn’t want surgical treatment. We report a rare case of adult onset rhabdomyomatous mesenchymal hamartoma. Although our patient and other reported cases had no clinically observable abnormalities, we recommend systemic evaluation in the patient with rhabdomyomatous mesenchymal hamartoma because etiology of this disease can be associated with aberrancy in the embryonic migration.

A case of tumid lupus erythematous following Kikuchi`s disease

( Joongoon Kim ),( Moonhyung You ),( Yeonwoong Kim ),( Byeongsu Kim ),( Donghoon Shin ),( Jongsoo Choi ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Tumid lupus erythematosus is a rare subtype of chronic cutaneous lupus erythematosus. Clinical lesions are characterized by raised erythematous plaques on sun-exposed areas such as the face, chest, arms and shoulders. Kikuchi’s disease is commonly associated with systemic lupus erythematosus, but rarely associated with tumid lupus erythematosus. A 36-year-old female patient presented with multiple erythematous plaques on both cheeks and back. She was diagnosed as Kikuchi’s disease by lymph node biopsy 3 month ago. ANA was negative, and histopathologic examination showed little vacuolar alteration, periadnexal, perivascular lymphocytic infiltration at dermo-epidermal junction. Mucin deposition in the reticular dermis was identified by alcian blue stain, so we diagnosed as tumid lupus erythematosus. After treatment with oral hydrochloroquine 100mg daily, the skin lesion was improved significantly. Herein, when skin lesion developed in patient with Kikuchi’s disease, we recommend skin biopsy to identify whether the skin lesion is from Kikuchi’s disease or other associated diseases.

A case of folliculotropic mycosis fungoides

( Joongoon Kim ),( Moonhyung You ),( Yeonwoong Kim ),( Byeongsu Kim ),( Donghoon Shin ),( Jongsoo Choi ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Mycosis fungoides is the most common form of cutaneous T-cell lymphoma, and it rarely exhibits predilection for hair follicle and eccrine gland infiltration. Folliculotropic mycosis fungoides is a distinct variant of mycosis fungoides. It is characterized by tropism of the lymphocytic infiltrate for hair follicle and other adnexal structure. Two cases of folliculotropic mycosis fungoides have been reported in Korean dermatologic literature. A 68-year-old male presented with a single recurring nodule on the left chin for 3 years. Histopathologic examination showed folliculotropism of atypical lymphocytes and immunohistochemical stain showed positivity for CD3, negativity for CD20 and elevated CD4: CD8 ratio (6:1). These findings correspond to folliculotropic mycosis fungoides’s histopathologic finding. We report an interesting case of folliculotropic mycosis mimicking acne or folliculitis-like lesion and recommend biopsy when skin lesion is persistant despite long term therapy.

Subcutaneous wood stick found by Leclercia adecarboxylata infection

( Joongoon Kim ),( Moonhyung You ),( Yeonwoong Kim ),( Byeongsu Kim ),( Donghoon Shin ),( Jongsoo Choi ) 대한피부과학회 2016 대한피부과학회 학술발표대회집 Vol.68 No.1

Leclercia adecarboxylata is gram-negative, motile, facultative anaerobic bacillus of the En-terobacteriaceae family. It has been rarely isolated from clinical specimens. A 15-year-old boy presented with two nodules on the left lower leg. He said that the first nodule emerged presumably following an injury about 2 years ago, and the second one emerged about 6 months ago. A week before visiting hospital, he felt pain on both nodules. We performed incision & drainage, bacterial culture on the first nodule, and skin biopsy on the second one. During incision & biopsy, we found an approximately 4cm-long wood stick. Histopathologic examination showed foreign body granuloma and Leclercia adecarboxylata was isolated from the bacterial culture. We report an interesting case of the skin lesion following wood stick injury, which was asymptomatic during last 2 years and later diagnosed as Leclercia adecarboxylata infection.

엔진 웜업시 오일온도에 따른 엔진 마찰이 차량 모드 연비에 미치는 영향

김병수(Byeongsu Kim),임건병(Gunbyoung Lim),이병옥(Byoungohk Rhee),박진일(Jinill Park),이종화(Jonghwa Lee) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-

Recently Simulation resulted in developing computer is attempting to experiment vehicle driving not using expensive instruments. It is possible to presuppose fuel economy by changing the characteristic of accessories using CRUISE(vehicle simulation software). In this paper, fuel consumption at each part of the vehicle is analyzed from experiment. The results of fuel economy analysis on experiment substitute for Cruise to measure fuel economy. The achieved simulation data such as engine speed, brake torque, shift pattern, vehicle speed, fuel consumption level is almost equal to experiment data. In this paper, it is performed that warm-up time of engine oil temperature is faster or slower through simulation. The faster engine oil warm-up time is, the more engine friction is decreased. As a result of decreasing of engine friction, fuel economy is improved maximum up to 1.7%.

대학축구선수의 자기관리행동과 스포츠자신감의 관계

김병수(Byeongsu Kim),이동호(Dongho Lee),류호상(Hosang Ryu) 한국코칭능력개발원 2012 코칭능력개발지 Vol.14 No.3