기술뉴스

박기홍 한국고분자학회 2001 고분자 과학과 기술 Vol.12 No.1

족삼리(足三里) 홍화약침(紅花藥鍼)처치가 Collagen으로 유발한 생쥐의 관절염 모델에 미치는 영향

박기홍,이현,Park, Ki-Hong,Lee, Hyun 대한침구의학회 2007 대한침구의학회지 Vol.24 No.6

Objectives : The purpose of this study is to observe the effects of Carthami Flos herbal-acupuncture (CF-HA) at Joksamni($ST_{36}$) on arthritis in mice induced by Collagen II. Methods : The author performed several experimental items, including arthritis evaluation, change in weight, spleen size and stenosis rate, change in cytokine level, IgG, IgM and anti-collagen II, change of immunocyte count and histological change of the CIA mouse joint. Conclusions are as follows: Results : 1. In the CF-HA, the arthritis index and rate and the incidence of arthritis were decreased as the experiment proceeded. 2. In the CF-HA, spleen swell and stenosis, joint edema and change were decreased. 3. In the CF-HA, the level of $IL-1{\beta}$, IL-6, $TNF-{\alpha}$ and $IFN-{\gamma}$ in blood serum were significantly decreased. 4. In the CF-HA, the level of IgG, IgM and anti-collagen II were decreased. 5. In the CF- HA, $IFN-{\gamma}$, $IFN-{\gamma}/IL-4$, IL-10 of the culture fluid was decreased. 6. In the CF-HA, the cell rate of $CD3e^+$ and $CD45R^+$, $CD4^+$ and $CD8^+$, $CD4^+/CD25^+$ in spleen was similar to the cell rate of the normal group. 7. In the CF-HA, the cell rate of $CD4^+/CD25^+$, $CD45R^+/CD69^+$ in a lymph node was decreased as in the normal group. 8. In the CF-HA, the cell rate of $CD3^+/CD69^+$, $CD11b^+/Gr-1^+$ in joints was decreased as in the normal group. 9. In the CF-HA, the cartilage destruction and the inflammation cell growth in the H&E stain were decreased. The collagen fiber in the M&T stain were less destructed, therefore the result was similar to the normal group. Conclusions : These results suggest that CH-HA at $ST_{36}$ has an effect in controlling immune reaction and suppressing inflammation in rheumatoid arthritis therefore, the continuous flow of the following study is expected.

새만금 해역에서 와편모조류 휴면포자의 시공간적 분포

박기홍,김학균,김근용,김창훈 한국수산과학회 2004 한국수산과학회지 Vol.37 No.3

The spatio-temporal distribution of dinoflagellate resting cysts was investigated by palynological processing to understand the harmful algal bloom (HAB) potential in the sediment of the Saemangeun area in 2003. In total, thirty-two dinoflagellate species were identified, and their concentrations were in the range of 6-1,618cysts・g-1 (dry weight). The concentrations of resting cysts were higher in the spring (26 species, 64-1,101cysts・g-1) and summer (30 species, 81-1,618cysts・g-1) than in the autumn (32 species, 6-1,150 cysts・g-1) and winter (24 species, 25-728cysts・g-1). The composition rate of the heterotrophic dinoflagellate species to the total, which is closely related to the eutrophication process, to ranged from 6 to 29% in the study area. The most dominant species was toxic Alexandrium tamarense/catenella (25%) followed by Gonyaulax scrippsea (9%) and toxic Protoceratium reticulatum (5%). Given the high abundance of the toxigenic dinoflagellate species, the Saemangeun area is considered to have the great potential for HABs in the future.

사이버대학교 학생의 중도탈락 원인분석

박기홍,조규락 한국교육정보미디어학회 2024 교육정보미디어연구 Vol.30 No.3

학생들의 중도탈락 문제는 학교 교육이 시작된 이후부터 지금까지 어느 나라, 어떤 학교에서나 발생하는 문제이나 완전하게 해결되고 있지 않다. 요즘 대학의 여러 문제 중에서 학생의 중도탈락 문제는학생의 유치와 더불어 가장 중요하다 할 수 있다. 특히 한번 이상의 대학을 경험해 봤을 사이버대학교 학생의 과도한 중도탈락 문제는 고등교육 기관인 사이버대학의 위상을 떨어뜨릴 수 있다. 이에 사이버대학교 학생의 개인적 특성과 학업적 특성 그리고 대학 학문적 경험에 따라 중도탈락 여부에 차이가 있는지 알아보고자 하였다. 또한 중도탈락의 요인은 무엇인지, 대학 학문적 경험에 따라 중도탈락에 미치는 영향력은 어떠한지를 비교했다. 본 연구는 D사이버대학교 2016~2021학년도까지 학적 보유자 8,366명을 대상으로 차이검증과 이항 로지스틱 회귀분석을 실시하였다. 연구 결과, 차이검증에서는 개인적 특성과 학업적 특성 그리고 대학 학문적 경험 모두에서 중도탈락에 유의미한 효과를 미쳤다. 또한 연령, 성별, 입학전형, 학과, 부복수전공의 선택 여부, 장학금 수혜 여부 모두 중도탈락에 영향을 미치는 요인으로 나타났다. 독립변인 간 영향력 비교에서는 모형1에서는 유의미하지 않았던 입학전형이 모형2에서는 유의미한 영향을 미치는 것으로 나타났다. 연구결과를 토대로 각 변인별 중도탈락 방지를 위한 시사점과 후속연구를 제안하였다. The problem of student dropout has occurred in any country or school since the beginning of school education, but has not been completely resolved. Among the various problems in universities these days, the problem of student dropout can be said to be the most important along with attracting students. In particular, the dropout problem of cyber university students who have experienced more than one university may degrade the status of cyber university. Accordingly, we investigated whether there is a difference in dropout according to personal characteristics, academic characteristics, and university academic experiences of cyber university students. In addition, we compared what factors contribute to dropout and what influence it has on dropout according to university academic experience. In this study, chi-square analysis and binomial logistic regression analysis were conducted on 8,366 academic holders from 2016 to the 2021 academic year of D Cyber University. As a result of the study, the significant differences were found on dropout in both personal characteristics, academic characteristics, and university academic experience. In addition, age, gender, admissions screening, department, choice of a double major, and scholarship benefit were all factors that influence dropout. In the comparison of the influence between independent variables, it was found that the admissions screening, which was not significant in Model 1, had a significant effect in Model 2. Based on the research results, implications and follow-up studies were proposed to prevent dropout by each variable.

Multiple Symmetric Lipomatosis Presenting with Bilateral Brachial Plexopathy

박기홍,홍윤호,최석진,성정준,이광우 대한신경과학회 2015 Journal of Clinical Neurology Vol.11 No.4

시각특성 파라미터들의 워터마킹 성능

박기홍,김윤호,강희조 보안공학연구지원센터 2005 보안공학연구논문지 Vol.1 No.2

한반도 지역에 대한 GPM 위성강수 초기 관측자료의 지상검증 분석

박기홍,류근혁,양성대,신진호 한국기상학회 2014 한국기상학회 학술대회 논문집 Vol.2014 No.10

머신러닝을 이용한 방사선원 위치 추적 검출기 시스템 알고리즘 적용성 평가

박기홍,정재영,김종헌,이상민,김용균 대한방사선방어학회 2021 대한방사선방어학회 학술발표회 논문요약집 Vol.2021 No.04

LCD용 반사필름의 코팅 와인딩 공정을 위한 제어기 설계

박기홍 국민대학교 생산기술연구소 2002 공학기술논문집 Vol.25 No.-

The demand for the metal coil coated with reflective film is rapidly increasing with the increasing demand of notebook PC's and LCD monitors. During the coating process, it is very important to regulate tension of the coil metal since fluctuation of the tension can significantly degrade quality of the product. In this study, a tension controller has been developed for winding process of LCD reflective film coating. The controller has been tested on the existing coating facilities, and the results are to be introduced in this paper.

중앙체계와 분산체계에 관한 연구

姜錫泰,朴琪鴻 群山大學校 1986 論文集 Vol.12 No.-

Distributed Computing 은 최근 자료처리 분야의 주요 논제로 등장하고 있으며, 이러한 추세에 맞추어 컴퓨터 제조업체는 이에 대한 자체 기술 개발에 박차를 가하고 있다. 그러나 현재까지도 중앙화와 분산화에 대한 논의는 지속되고 있는 실정이다. 본 논문에서는 중앙화/분산화 체제 구성시 은행시스템을 관점으로 하여 시스템 구성시 발생되는 여러 자료처리의 기술적 관점을 연구하였다. Distributed computing has become a main trend in the data processing world. Corresponding to this trend, major computer manufacturers have recently announced their own distributed network architectures as supporting tools for implementing information network systems. Still, there is much argument about centralization and distribution of information processing resources. In this paper same considerations for design of centralized/distributed processing systems in banking system are given, along with some aspects accompanied with systems design such as various data processing technologies.