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오재홍 ( Jae Hong Oh ),고병창 ( Byeong Chang Ko ),박희재 ( Hee Jae Park ),함승필 ( Seung Pil Ham ),박혜진 ( Hai-jin Park ) 대한피부과학회 2020 대한피부과학회지 Vol.58 No.10
Ectopic nails are rare and characterized by the growth of nail-like structures in a location other than the typical nail unit. Diagnosis of the ectopic nail is based on histologic examination consistent with a fully developed nail plate and matrix structure. Surgical resection of the entire matrix of ectopic nails is the gold standard for management. Cases of acquired ectopic nails without traumatic events have rarely been reported. A 25-year-old woman presented with a 15-year nail-like structure below the 4th fingernail of the left hand. She denied any history of trauma. Histologically, the keratinous structure was consistent with the nail plate. Plain radiography revealed an osteolytic lesion on the distal phalanx. However, she refused further evaluation and surgical excision. Herein, we report a unique case of an acquired ectopic nail without trauma. (Korean J Dermatol 2020;58(10):694∼696)
ERP 통합운영관리 하(下)에서 유지보수 효율화에 대한 연구
오재홍 ( Jae-hong Oh ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.1
급속한 기술환경의 변화와 정보화 사회의 도래에 따라 시스템의 구축 비용보다 더 많은 비용이 유지보수에 투입되고 있다. ERP(SAP) 는 공통의 package 를 사용하므로 서로 다른 업종, 조직이라 하더라도 통합운영 관리가 비교적 용이하다. 통합운영은 고객의 유지보수비용을 줄이고, 유지보수입장에서도 적은 인원으로 효과적인 운영이 가능하게 하다. 하지만, 여기서 나타나는 문제점을 사례를 통해 제시하고 분석하여 그 개선방향을 제시하고자 한다.
오재홍 ( Jae Hong Oh ),김병윤 ( Byung Yoon Kim ),최미라 ( Mira Choi ) 대한피부과학회 2021 대한피부과학회지 Vol.59 No.5
Background: Infantile hemangioma (IH) is one of the most common tumors in infants. IH occurs more commonly in premature and low birth weight infants, but only a few studies have analyzed the risk factors for IH in neonatal intensive care units (NICUs) in Korea. Objective: We investigated the risk factors for IH in patients admitted to the NICU at a single institution. Methods: A single-center retrospective case-control study was conducted in 37 patients with hemangioma and 185 matched-control babies who were admitted to the NICU between 2013 and 2020. Odds ratios (ORs) and multivariate conditional logistic regression models were used to determine the associations between IH and the potential risk factors. Results: Of the 1,206 neonates admitted to the NICU, 37 had IH, and the prevalence was 3.1%. IH was most commonly found on the trunk (33.3%), followed by the head and neck (29.4%). After adjustment, the risk factors found to be significantly associated with IH were female sex (OR=3.0, 95% confidence interval [CI]=1.4∼6.8), extreme preterm (OR=6.9, 95% CI=1.3∼38.0), very low birth weight (OR=11.9, 95% CI=2.9∼49.3), low 1-minute Apgar scores of <7 (OR=2.3, 95% CI=1.1∼4.9), and multiple gestation (OR=5.0, 95% CI=1.7∼14.9). Conclusion: This matched case-control study revealed that risk factors such as female sex, extremely preterm birth, very low birth weight, low 1-minute Apgar score, and multiple gestations may affect the occurrence of IH. Therefore, if these risk factors are present, they need to be actively managed at an early stage through close physical examination to prevent complications. (Korean J Dermatol 2021;59(5):332∼340)