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Chanjin Park,Eun Sun Choi,Euno Choi,Eunhee Kim 대한영상의학회 2023 대한영상의학회지 Vol.84 No.6
Primary angiitis of the central nervous system (PACNS) is a rare vasculitis in the central nervous system. Herein, we report a case of diagnosis and treatment of necrotic pattern PACNS, which was difficult to differentiate from a brain abscess. A 19-year-old male presented with blurred vision and a headache. Brain MRI revealed irregular rim-enhancing necrotic masses with central diffusion-high signal intensity in the corpus callosum and peripheral diffusion-high signal intensity in the left parietotemporal periventricular area. Susceptibility-weighted imaging revealed multiple punctate hemorrhages in the lesions. The patient was diagnosed with unusual abscess or tumefactive PACNS. Therefore, we initially treated the patient with antibiotics to rule out brain abscess. However, the brain lesions did not improve on follow-up MRI after the antibiotic treatment. Surgical biopsy was performed, and the histopathological diagnosis was PACNS with a necrotic pattern. The necrotic lesions became smaller on follow-up MRI after high-dose corticosteroid treatment.
Cerebral Amyloid Angiopathy- Related Inflammation: A Case Report and Literature Review
Chanjin Park,Eun Sun Choi,Eunhee Kim 대한영상의학회 2023 대한영상의학회지 Vol.84 No.5
Cerebral amyloid angiopathy-related inflammation (CAA-RI) is an encephalopathy caused by inflammation of β-amyloid peptide deposition in cerebrovascular vessels. It is a rare disease that mainly occurs in the elderly and is characterized by rapidly progressive dementia, headache, seizures, and focal neurologic deficits. CAA-RI can demonstrate characteristic brain MRI findings and can be reversed by steroids or other immunosuppressive therapies. Here, we report a case of CAA-RI, which was initially misdiagnosed as a subacute infarction but was diagnosed while reviewing follow-up brain MRI images, and spontaneous remission was achieved.
영어교육에서 언어 기능 통합 과제의 유형과 효과에 관한 메타분석
박찬진(Park Chanjin),김정렬(Kim Jeong-ryeol) 학습자중심교과교육학회 2021 학습자중심교과교육연구 Vol.21 No.17
목적 본 연구는 현재까지의 기능 통합 영어교육과 관련된 연구물에 활용된 과제의 유형별 효과성을 메타분석해보고 기능 통합 영어교육의 효과적인 적용 방안을 모색해보는 데 그 목적이 있다. 방법 이를 위해 국내 초등학생부터 대학생을 대상으로 실시한 기능 통합 영어교육 관련 30편의 연구물을 선정하였고, 분석 가능한 57개의 효과크기를 메타분석하였다. 결과 첫째, 기능 통합 영어교육은 평균 효과크기는 .708로 Cohen(1988)의 효과크기 구분에 따라 중간 효과크기를 보이는 것으로 나타났다. 둘째, 인지유형별 평균 효과크기는 추론차(g=.890)가 가장 크게 나타났으며 이어 혼합형(g=.774), 의견차(g=.691), 그리고 정보 차(g=.611)의 순으로 도출되었다. 셋째, 과제결과 일치여부별로는 수렴과제가 g=.787, 발산과제가 g=.691로 모두 중간 크기의 효과성을 보였다. 마지막으로 중점 통합 기능 수별 평균 효과크기는 2기능 중심 통합의 효과크기가 g=1.014로 큰 효과크기로 나타났으며, 4기능 중심 통합은 g=.637인 중간 크기의 통계적으로 유의한 값으로 나타났다. 결론 기능 통합 과제의 유형별 효과성 비교를 통해 추후 효과적인 기능 통합 영어교육의 방안을 탐색할 수 있으며, 실제적 의사소통능력 신장을 위한 영어 교육이 이루어질 수 있을 것이다. Objectives The purpose of this study was to synthesize the effects of language skills-integrated English education among different task types based on the researches conducted in English education setting from elementary school to university in Korea. Methods 30 research papers on the topic was compiled via three step selective procedure and 57 analyzable effect sizes were elicited. Results First, language skills-integrated English education showed a big size effect (g=.708). Second, the effectiveness according to the conditions of task types were statistically significant when the task was a reasoning-gap activity (g=.890) as opposed to a mixed activity (g=.774), an opinion-gap activity(g=.691) or an information-gap activity(g=.611). Third, language skills-integrated English education was more effective when applied to convergent tasks (g=.787) compared to divergent tasks (g=.691). Lastly, integrating two skills (g=1.014) had a greater effect size than integrating four skills (g=.637). Conclusions Language skills-integrated tasks were found to cause student’ English abilities to grow positively by considering effective task types.
층위구조 아키텍처의 복구 및 일치성 검사를 위한 프로그램 분석 방법
박찬진(Chanjin Park),홍의석(Euyseok Hong),강유훈(Yoohoon Kang),우치수(Chisu Wu) 한국정보과학회 2005 정보과학회논문지 : 소프트웨어 및 응용 Vol.32 No.8
층위 구조 아키텍처는 프로그램을 일반성에 따라 분할하는 모듈 구성의 방법이다. 본 논문은 객체지향 프로그램으로부터 층위 구조 아키텍처를 복구하고 아키텍처 문서와의 일치성을 검사하는 방법을 제시한다. 객체지향 프로그램에서의 층위구조 스타일 규칙을 기술하기 위해, 모듈 간 사용 관계에 기반한 모듈들의 부분 순서 집합을 구성하며, 재정의 관계를 통해 모듈 간 층위 관계를 정의한다. 또한, 층위 관계의 의미를 설계 패턴에서의 예를 통해 설명한다. 프로그램으로부터 층위 구조 아키텍처를 복구하기 위한 절차를 기술하며, 복구를 위한 메타 모델을 제시한다. 이를 기반으로 공개 소스 프로젝트를 통해 개발된 소프트웨어의 소스코드들로부터 층위 구조 아키텍처를 복구하고, 복구된 아키텍처로부터 발견된 층위 관계의 의미와 아키텍처 문서와의 불일치 부분들에 대해 논의한다. 검사를 통해 아키텍처 문서와 일치하지 않는 부분들이 발견하였고, 이를 조사한 결과 이들이 층위 구조 아키텍처에서 허용 가능한 예외로 여겨지지만 아키텍트가 이들 부분에 대한 변경을 주의 깊게 관리할 필요가 있다는 것을 지적하였다. Layered Architecture is a kind of module decomposition techniques, which decomposes a program by generality. This paper proposes a layer based method for recovering layered architecture from object-oriented program and checking conformance against architectural document. To specify the rules for layered style in object-oriented program, we define a partially ordered set on modules by module use relationship and module layer relationship by module override relationship. The meaning of module layer relationship is explained with an example from design patterns. Steps to recover layered architecture from program are described and a metamodel for the recovery is proposed. Architecture recovery is performed on source codes from open-source software project, and the implication of parts that do not conform to its architectural document is discussed. As a result of checking, it is pointed out that, although the parts are considered allowable exceptions of layered architecture, their modifications should be controlled carefully.
박찬진,Park, Chanjin 인천대학교 도시과학연구원 2022 도시과학 Vol.11 No.2
In this study, smart environmental management, which is an essential element for building a sustainable city, was studied. Incheon area in the metropolitan area was selected as a research subject, the recent atmospheric environment was reviewed comprehensively, and the main air quality policies of Incheon city were summarized. The smart environment management application cases were organized and analyzed to summarize the results. Based on this study, smart environment management plans for the creation of a smart city in an urban area were suggested.
Biotransformation of Phloretin Using Bacillus subtilis Spore Displayed Tyrosinase
Yura JEONG,Chanjin PARK,Junehyung KIM 한국생물공학회 2021 한국생물공학회 학술대회 Vol.2021 No.10
In this study, we tried the biotransformation of phloretin using Bacillus subtilis spore displayed tyrosinase from Bacillus megaterium. Phloretin is mainly found in the root bark of apple trees and in apples where it acts as a natural antibacterial plant defense metabolite. The cell surface expression of tyrosinase was verified by flow cytometry using FITC labelled anti-His6tag antibody. After 7 hr of incubation at 37℃, we confirmed that phloretin was biotransformed into a new product by HPLC analysis. And It was further analyzed using LC/MSMS and 1H-NMR to be revealed as 3’-hydroxyphloretin. In addition, the spores were washed with Tris-HCl buffer and reused in the reaction. The biotransformation proceeded through 7 recycling reactions without showing any decrease of the enzymatic activity.