IgA 신증과 막성 사구체신염이 병발한 사구체 신염

김도헌,홍순원,임현이 대한신장학회 1997 Kidney Research and Clinical Practice Vol.16 No.2

We report a rare case of primary glomerular disease with both features of IgA nephropathy and membranous glomerulonephritis in a 45 year-old, HBsAg negative man with nephrotic syndrome. Histologically, glomeruli showed mesangial expansion, proliferation of mesangial cells, and diffuse thickening of capillary walls. Direct immunofluorescence demonstrated granular IgG and C3 deposits along the capillary walls and IgA deposits in mesangiums. Granular subepithelial and mesangial depoists were observed by electron microscopy.

실내 미세먼지 측정을 위한 저가형 PM 센서의실험실/현장 평가 및 보정 방법

김도헌,신동민,황정호 한국입자에어로졸학회 2022 Particle and Aerosol Research Vol.18 No.4

Recently, low-cost particulate matter (PM) sensors have been widely used in monitoring mass concentration. Maintaining the accuracy of the sensors is important and requires rigorous performance evaluation and calibration. In this study, two commercial low-cost PM sensors(LCS), Plantower PMS3003 and Plantower PMS7003, were evaluated in the laboratory and field with a reference-grade PM monitor (GRIMM 11-D). Laboratory evaluation was conducted with single/mixed particles of PSL (Poly Styrene Latex) in an acrylic chamber at 20℃ and relative humidity of 20%. Field evaluation was conducted inside a building of Yonsei University (Shinchon) from February 12 to March 31, 2022. In both evaluations, LCS measured values became different from reference measured values when the relative humidity was high or the outdoor air PM10/PM2.5 ratio was high. Based on the field evaluation, the LCS measured values were corrected through four different regression analysis models. As a result, the multivariate polynomial regression analysis model showed highest matching with the reference PM monitor (PM2.5 >0.9, PM10 >0.85). In this model, the PM10/PM2.5 ratio and relative humidity were chosen as independent variables.

소셜미디어 시대의 기업 학습관 및 인재육성전략에 대한 성찰과 탐색

김도헌 한국성인교육학회 2011 Andragogy Today : International Journal of Adult & Vol.14 No.4

There have been increasing interests on social learning strategies utilizing social media such as wiki, micro-blog, social networking sites in the context of corporate training and development field. Two perspectives exist in seeing Internet evolution called web 2.0 and social media. One is a light perspective that web 2.0 is just a buzzword for marketing strategies. The other is a serious perspective that web 2.0 needs to be seen as an paradigm shift to facilitate enormous social changes. This study, based on the serious perspective on web2.0 and social media phenomenon, is to reflect and explore on corporate learning and human resources strategies for the age of social media. First, from the viewpoint of ecological psychology, emergence of social media was discussed as an affordance to change corporate learning ecology. Also the meaning and direction of learning 2.0 were explored based on the discourse about 'web as platform' in the IT field. Then, essential meaning of 'social learning' was discussed. Second, new direction of human resource strategies was discussed in four areas: purpose, content, method, e-Learning. The discussions include 'Pareto law's HRD vs. long-tail theory HRD', 'taxonomy style curriculum vs. folksonomy style curriculum', 'training system as closed portal vs. learning eco-system as open search', and 'e-learning as courseware vs. micro-learning'. 최근 들어 인적자원개발 분야에서 소셜미디어를 활용한 사회적 학습의 적용방안에 대한 관심이 증가하고 있다. 소셜미디어와 웹2.0이라 불리는 인터넷 환경의 거대한 진화를 바라보는 시각에는 두 가지가 있다. 하나는 마케팅 차원의 시류에 불과하다는 ‘가벼운’ 시각이며, 다른 하나는 사회변화를 촉진시키는 근본적 변화패러다임으로 주목할 필요가 있다는 ‘무거운’시각이다. 본 연구는 이러한 ‘무거운’ 시각으로부터 소셜미디어가 만들어내는 사회변화 현상들이 근본적으로 기업에서의 학습관 및 인재육성전략과 관련해 무엇을 가르쳐주고 있는지를 탐색하고자 하였다. 첫째, 생태심리학의 관점으로부터 기업의 학습생태계를 변화시킬 새로운 어포던스(affordance)로서 웹2.0과 소셜미디어 등장의 의미를 논의하였다. 그리고 웹2.0의 핵심특성이라 할 수 있는 ‘플랫폼으로서의 웹’에 대한 IT분야의 담론에 기초하여 학습2.0의 방향성을 탐색하고 이를 바탕으로 기업에서 최근 논의가 활성화되고 있는 ‘사회적 학습’의 본질적 의미를 논의하였다. 둘째, 소셜미디어 시대의 새로운 인재육성전략을 전략적 방향, 교육체계의 내용, 육성의 방법 영역으로 나누어 논의하였다. 각 영역별로 ‘파레토 법칙형 대 롱테일 법칙형 인재육성전략’, ‘텍사노미형 교육체계 대 폭사노미형 교육체계’, ‘닫힌 포탈형 훈련체제 대 열린 검색형 학습생태계’로 대비하여 논의하였다. 마지막으로 집단지성 개념에 비추어 인적자원개발의 방향성에 대한 제언을 하였다.

거대 자기임피던스〔GMI〕 센서를 이용한 생물학적 응용을 위한 마그네틱 비드 검침

김도헌,이우영,정원용 한국자기학회 2008 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

Validation of an ENDF/B-VII.0-Based Neutron and Photon Shielding Library in MATXS-Format

김도헌,길충섭,이영욱 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23

A MATXS-format neutron and photon cross section library for various shielding applications was generated based on the ENDF/B-VII.0, which has been disseminated through the NEA Data Bank (NEA-1818). The library contains 204 nuclide data including 8 thermal scattering law data processed by the NJOY99 code, while it adopts the VITAMIN-B6 energy group structure, i.e., 199 groups for the neutron and 42 groups for the photon. In this study, the library has been validated through some shielding benchmark experiments taken from SINBAD. The calculations were carried out with the TRANSX/DANTSYS code system, and the results were compared with those of the KASHIL-E6 library, which was the preceding library based on the ENDF/B-VI.5. In addition, the applicability of the library to the reactor criticality calculation was examined for some fast and thermal benchmark problems taken from the ICSBEP benchmark specifications.

e-SCM의 성과에 영향을 미치는 요인에 관한 사례 연구

김도헌,김상덕 한국유통과학회 2008 유통과학연구 Vol.6 No.2

This paper is a case study on determinants of e-SCM performances. It suggested effective factors related with e-SCM performances for common feature, and point of difference between case firms. So the paper investigated former literature. Then it derived determinants on e-SCM performances. The authors found that establishment of e-SCM project team, mind change of top management, sharing of information, establishment of exact demand and supply plan, the best use of information technology, scale of organization, and collaboration of between firms are key success factors of e-SCM. Case company were three companies. The paper chose SONY, and Samsung Electronics among electronic companies, and HAITAI among confectionary companies. It analyze three companies about common feature, and point of difference, regarding seven effective factors as mentioned above.

중소공급업체 공정성 지각의 선행요인과 결과요인

김도헌,김상덕 한국유통과학회 2011 유통과학연구 Vol.9 No.2

The object of this research is to examine the factors leading to intercompany win-win by finding the antecedents and consequences that affect a supplier’s fairness perception. We assume that the antecedent factors of a supplier’s fairness perception are vertical coordination, cooperation support, information sharing, and legalistic plea. We assume that the consequential factors of a supplier’s fairness perception are supply chain dependence and supply chain flexibility. The object industry is an electronic parts manufacturing company. We tested our model by using the SPSS 17.0 and the LISREL 8.5. For measurement validation, we verified by using a confirmatory factor analysis and a reliability analysis. For hypothesis analysis, we did a path analysis with the LISREL 8.5. By checking the modification index and expecting parameter changes, we modified the model. First, the buyer’s vertical coordination had a positive effect on the supplier’s distributive fairness perception and procedural fairness perception. Second, the buyer’s cooperation support had no effect on the supplier’s distributive fairness perception and procedural fairness perception: we suppose that the buyer’s requests were burdensome, although they cooperated with the supplier. Third, the buyer’s information sharing had a positive effect on distributive fairness perception but had no direct effect on procedural fairness perception. Fourth, the buyer’s legalistic plea had a negative effect on the supplier’s distributive fairness perception. and a negative effect on the supplier’s procedural fairness perception at a 0.1 significance level. Fifth, although procedural fairness perception had no direct effect on supply chain dependence, fairness perception had an effect on supply chain dependence and supply chain flexibility both directly and indirectly.

화상의 이해

김도헌 대한외과학회 2013 대한외과학회 학술대회 초록집 Vol.2013 No.11

고대의 판상철부에 대한 검토-영남지역 분묘 출토품을 중심으로-

김도헌 한국고고학회 2004 한국고고학보 Vol.53 No.-

The flat iron axe(板狀鐵斧) is one of the iron implement which was appeared from the first stage of iron implement culture in Youngnam Region(嶺南地域). And the use of the flat iron axe was tool at first but gradually changed into the matter of manufacturing ironware(鐵器製作素材). For the purpose of making study of the flat iron axe in this paper, firstly classify the flat iron axe and investigate use as tool and the aspect of change and distribution. On the basis of investigating contents, I examine firstly the flat iron axe in Youngnam Region was made after on the model of the flat stone axe(扁平偏刃石斧). Secondly the distribution change aspect(變化相) of the flat iron Axe was converted in the latter part of AD 2C and this phenomenon suggest that the circulation of the flat iron axe was in control of some group. Finally the burial aspect(副葬樣相) of the flat iron axe exist regional difference(地域差) in the latter part of AD 3C. Group in Gimhae(金海) and Busan(釜山) Region carried on burying the flat iron axe but in Kyoungju(慶州) Region buried the iron spear(鐵矛) instead of the flat iron axe.

소셜미디어 활용의 두 가지 얼굴 : 교육적 도구로서의 확장성과 마비성에 대한 고찰

김도헌 한국방송통신대학교 미래원격교육연구원 2012 평생학습사회 Vol.8 No.2

최근 들어 소셜미디어는 사회, 경제, 문화 전반에 걸쳐 확산되며 거대한 변화와 함께 다양한 담론을 생산해내고 있다. 이에 따라 마이크로 블로그와 소셜네트워킹 플랫폼 등을 지칭하는 소셜미디어가 갖는 교육적 영향력에 대한 연구관심이 높아지고 있다. 본 연구는 소셜미디어의 교육적 활용에 관한 주요 학술 문헌들에 대한 분석을 통하여 교육적 도구로서 소셜미디어가 어떤 영향력을 가져올 것인지에 대하여 탐색하고자 한다. 특히, 본 연구는 미디어를 인간 기능의 확장인 동시에 마비로 바라본 McLuhan의 관점을 채택하여 소셜미디어가 교육분야에 가져올 확장성, 즉 긍정적 영향력과 함께 부정적 영향력, 즉 마비적인 측면을 함께 고찰하고자 한다. 이를 위해 최근 5년 동안 수행된 소셜미디어의 활용에 관한 교육적 연구 문헌들을 수집, 분석하였다. 우선 분석대상으로 선정된 학술논문을 연구목적, 연구방법, 연구대상으로 나누어 연구동향을 파악하였다. 이를 기반으로 소셜미디어의 교육적 활용이 갖는 확장성과 마비성을 1) 네트워킹 활동을 통한 공동체적 자아정체성의 형성과 왜곡, 2) 상호작용성과 다중처리의 특성으로 인한 인지발달의 촉진과 저해, 3) 비선형적 읽기방식과 마이크로 스타일의 쓰기 방식이 갖는 리터러시 역량 강화와 퇴조의 양면성, 4) 소셜미디어 이용에 따른 학업 향상과 저하, 5) 교육적 상호작용성의 확장과 잠재적 위험 요인과 같이 다섯가지 영역으로 나누어 고찰하였다. 마지막으로 연구결과가 주는 교육적 시사점과 후속연구에 대한 제안점이 논의되었다. The purpose of this study is to explore the educational impacts of social media as an educational tool Particularly, this study explores positive and negative aspects of social media from the perspective of Marshall McLuhan, who understands media as extentions of human as well as paralysis of human. This study used literature analysis method to examine educational impacts of social media. Based on the literature analysis, the study briefly summarizes research trends about educational use of social media in terms of research purpose, method, and context. The main results of this study describe and discuss positive and negative aspects of social media as an educational tool as follows: 1) self-identity formation through social networking activities, 2) impact of social media’s interactivity and multi-tasking on cognitive development, 3) changes in literacy by non-linear reading style and micro writing style, 4) impact of using social media on learning engagement and academic achievement, 5) facilitation and risk factors of educational interactions by using social media. Finally, educational implications and recommendations for future research were discussed.