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      • NSIP와 BOOP의 고해상전산화단층촬영 소견과 비교

        백상현,박재성,차장규,홍현숙,김대호,박성진,조준희,이혜경,최진수 순천향의학연구소 2003 Journal of Soonchunhyang Medical Science Vol.9 No.2

        Purpose: BOOP and NSIP also share similar clinical features such as subacute flu-like illness, the finding of bronchoalveolar lavage, the result of pulmonary function test and more favourable outcome than usual interstitial pneumonia(UIP). The author try to compare the HRCT findings of NSIP with BOOP by pattern and distribution of diseases. Materials and Methods: HRCT findings of histopathologically proven NSIP(Group Ⅰ; 6, Group Ⅱ; 7, Group Ⅲ; 2) in 15 patients(5 male, 10 female, age range, 39-69 years; mean age, 53 years), BOOP in 15 patients(6 male, 9 female, age range, 26-76 years; mean age, 52 years) were reviewed retrospectively. Results: The common pattern of the two diseases was admixed consolidation, ground glass attenuation & reticular densities with/without architectural distortion(NSIP; 53.3%, BOOP; 46.7%). The main component of the pattern wan predominantly consolidation(NSIP; 46.7%, BOOP; 73.3%) and ground glass attenuation(NSIP; 40.0%, BOOP;20.0%). Architectural distotion was more provinent finding with NSIP(mild ; 3, moderate ; 4, severe; 2) compared with BOOP(mild; 7, moderate; 2, severe; 0). The predominant overall distribution was lower lung, peribronchovascular & peripheral lung field in both of the two entities(NSIP;73.3%, BOOP; 73.3%). Peribronchovascular involvement was more common with NSIP(100%) than BOOP(80%), whereas peripheral involvement was more common with BOOP(93.3%) than NSIP(80%). Conclusion: The HRCT findings of NSIP and BOOP were similar in pattern and distribution. But NIP manifested more frequently ground-glass attenuation, whereas BOOP showed more frequently consolidation. Architectural distortion was more severe with NSIP than BOOP. NSIP invoved more frequently peribronchovascular space and BOOP were more common in peripheral lung field.

      • 클라이밍 로봇을 활용한 고교각의 자동화 균열 평가

        배현진 ( Bae Hyun Jin ),장근영 ( Jang Keun Young ),안윤규 ( An Yun-kyu ) 한국구조물진단유지관리공학회 2019 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.23 No.1

        This paper proposes an automated crack evaluation technique for a high-rise bridge pier using a climbing robot. The proposed technique enables to automatically detect and quantify the bridge pier cracks even where cannot easily access by human for visual inspection. To achieve it, high quality images are obtained by scanning the vision cameras embedded on the climbing robot along the bridge pier surface. Then, a feature extraction-based image stitching algorithm is newly developed and applied for establishing the entire region of interest (ROI) images. The ROI images are then processed with a semantic segmentation algorithm for automated crack detection. Finally, the detected cracks are precisely quantified by a crack quantification algorithm. The proposed technique is validated using in-situ test data obtained from Jang-Duck bridge located at Gangneung city, South Korea. The test results reveal that the proposed technique successfully evaluate the bridge pier cracks with precision of 90.92 % and recall of 97.47 %.

      • KCI등재

        광주광역시 전문계 고등학교 특성화 및 종합발전방안

        나승일,정철영,김진모,안강현,한홍진,김기용,민상기,장현진 한국농업교육학회 2008 농업교육과 인적자원개발 Vol.40 No.1

        이 연구의 목적은 광주광역시 전문계 고등학교의 특성화 및 종합발전방안을 수립하는데 있다. 이 연구는 ① 전문계 고등학교 관련 선행연구 분석,② 인력육성 및 특성화 방향을 설정하기 위하여 광주광역시,전라남도,우리나라의 산업여건 분석,③ 광주광역시 전문계 고등학교에 대해 Malcolm Baldrige 평가모형에 의한 진단평가와 SWOT 및 활용전략 분석, ④ 광주광역시 전문계 고등학교의 개편 요구 분석,⑤ 광주광역시 전문계 고등학교의 특성화 및 종합발전방안 설정 등의 과정을 통해 수행되었다. 이 연구의 결과는 다음과 같다. 첫째,비전은 광주광역시 전문계고 특성화와 발전 역량 구축을 통한 산업체 요구에 부합하는 우수 인력 양성이며,이를 위한 전략은 특성화 체제구축,학교교육 혁신,인적 자원 혁신,학교경영 혁신,인프라 구축으로 설정하는 것이 필요하다. 둘째, 특성화 체제 구축은 특성화 체제 개편,교육과정 중심 특성화,학과 재배치 통합형 고교 도입,특성화고 신설을 통해 추진할 수 있 는데 특히,교육과정 중심 특성화가 적극 도입되어야 한다. 셋째,학교교육 혁신은 교육과정 개편,교수 학습 개선,진로지도 개선,시설 및 기자재 개선을 통해 추진할 수 있다. 넷째,인적자원 혁신은 학교 관리자 역량 강화,교원 역량 강화,학생 역량 강화를 통해 추진할 수 있다. 다섯째,학교경영 혁신은 경영 리더십 제고,경영 성과관리 강화,학교 재정 혁신을 통해 추진할 수 있다. 여섯째,인프라 구축을 위해 지자체,대학,산업체,지역주민과 연계 강화를 통해 추진할 수 있다. 일곱째,13개 전문계 고둥학교의 여건 및 특성에 적합한 단위학교별 특성화 및 종합발전방안을 수립하였다. The purpose of this study was to suggest strategies to specialize and develop vocational high schools in Gwangju Metropolitan City. The study was orderly performed as follows: (1) reviewing literature about vocational high school, (2) analyzing the condition of industries, (3) diagnosing the vocational high school through Malcolm Baldrige model, (4) analyzing the SWOT and application strategies, (5) analyzing the needs of reform, and (6) establishing the strategies for the specialization and development of Vocational High Schools in Gwangju Metropolitan City. The major findings of this study were as the following: First, the vision was to bring up excellent human resources to corresponds industrial needs through specialization and development of vocational high schools in Gwangju Metropolitan City. Five strategies to achieve it were creating the specialization system, innovating the school education, human resources, and the school management, and building the infrastructure. Second, creating the specialization system can be performed through five tasks which were restructuring the specialization system, creating curriculum-based specialization, trading departments in inter-schools, introducing an integrated high school, and building a new specialized high school. Especially curriculum based specialization needs to be accepted. Third, innovating the school education can be performed through four tasks which were reorganizing the curriculum, improving the teaching and learning, improving the career guidance, and improving the facilities and equipments. Fourth, innovating human resources can be performed through three tasks which were enhancing each competencies of a school manager, a teacher, and a student. Fifth, innovating the school management can be performed through three tasks which were improving the management leadership, developing the performance management, and innovating the school finance. Sixth, building the infrastructure can be performed through four tasks which were enhancing the relationships with a local government, colleges, industries, and local residents. Seventh, individual strategies for the specialization and development of thirteen vocational high schools were also developed by corresponding to their conditions and characteristics.

      • Branch-Line Slit 을 갖는 이중 대역 PIFA의 설계 및 제작

        장수영,윤진호,김보미,김석현,이영순 금오공과대학교 2005 論文集 Vol.26 No.-

        A PIFA(Planar Inverted-F Antenna) which can be used in GSM/IXS dual band mobile phone has been designed and fabricated. In particular, in order to reduce the required top patch dimensions, the patch of the present PIFA has been designed as a type of an asymmetric branch line slit in which the excited patch surface currents can be meandered. By use of the HFSS, important design parameters such as the position of feed point and the length of slit were simulated and determined. In the present study, the design procedure by which the exact operating frequency and the proper band width can be obtained, are discussed. In order to check the validity of the present study, some simulated and measured results are presented.

      • KCI등재

        주조용 CD4MCU 이상 스테인리스강의 Mo 첨가에 따른 인장 및 부식 거동

        장영환,손진일,김상식,이재현 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.3

        In the present study, the effect of Mo contents on the microstructure, tensile and corrosion behaviors of as-solutionized CD4MCU cast duplex stainless steel was examined. The polarization test was conducted in 3.5% NaCl +5% H₂SO_(4) aqueous solution for general corrosion resistance and the slow strain rate tests were also conducted in air and 3.5% NaC1+5% H₂SO_(4) aqueous solution to study the stress corrosion cracking (SCC) of the present alloy. A substantial microstructural evolution of CD4MCU cast duplex stainless steel was observed with different Mo contents, which in turn affected the tensile and corrosion behaviors significantly. The beneficial effect of Mo on improving the corrosion and the SCC resistances was largely overwhelmed by this variation of microstructural characteristics. The relationship between the microstructural evolution and the tensile and corrosion behavior of CD4MCU cast duplex stainless steels with different Mo contents was discussed based on the optical and SEM micrographic and fractographic observations. (Received September 2, 2004)

      • 혐기성 소화시 온도와 기질 부하에 따른 메타생성균 거동에 관한 연구

        장현섭,황선진 경희대학교 2003 環境硏究 論文集 Vol.12 No.-

        Anaerobic digestion is a biological treatment process that has many advantages over the more conventional aerobic processes including low levels of excess sludge production, low space requirements and the production of valuable bigots. this study was carried out to evaluate the effect of organic loading rate on thermophilic(55℃) and mesophilic(35℃) anaerobic digestion. Moreover, fluorescent in situ hybridization(FISH) method was used for studying the microbial community it the reactors. The results of this study was as follows ; The stabilizing time of mesophiwic anaerobic reactors were shorter as approximately 20 days than 40 days of the thennrophiwic anaerobic reactors. The methane production of anaerobic reactors were independent of the feed substrate concentration and methanogens. The microbial diversity of two types of methanogenic reactor, mesophiwic (35℃) and thermophiwic (55℃), which had beet treating acetate-based artificial wastewater were compared. Methanogensis is carried out by microbial consortia consisting of bacteria and archer such as methanogens. the bacterial and archaic populations of all anaerobic reactors were investigated during a period of the process reflected by at accumulation of acetate. Archaea wore predominant it all reactors, and methanothrix-wike methanogens appeared it the mesophiwic anaerobic reactors with high feed substrate concentrations but it was tot preset it thermophiwic anaerobic reactors.

      • KCI등재

        실직자의 전환학습과 관련 변인

        장현진,나승일 한국농업교육학회 2008 농업교육과 인적자원개발 Vol.40 No.3

        이 연구의 목적은 우리나라 실직자들의 전환학습 수준을 측정하고, 실직자의 전환학습과 관련된 변인틀과 그들의 설명력을 구명하는 데 있었다. 이 연구의 모집단은 직업에 종사하다가 그만둔 사람 가운데 정년퇴직을 제외한 모든 성인 실직자들이며, 접근의 어려움으로 전직실업자훈련프로그램 가운데 조사시점의 719개 프로그램에 참여하는 실직자를 목표모집단으로 설정하였다. 표집은 군집표집방법을 사용하여 34개 전직실업자훈련프로그램에 참여하는 630명의 실직자를 표본으로 선정하였다. 자료의 수집은 우편조사와 방문조사를 통해 이루어졌으며, 최종분석에서는 체크가 불량한 67부의 설문지를 제외한 총 410부가 활용되었다. 자료의 분석은 기술통계 및 추리통계를 사용하였으며, 통계적 유의수준 0.05 를 기준으로 판단하였다. 이 연구의 결론은 다음과 같다. 첫째, 실직자들의 전환학습 과정은 자기성찰(2단계), 대안탐구(5단계), 새로운 행동 계획(6단계)이 상대적으로 높게 이루어지며, 실직자들의 전환학습 수준은 이론적 평균(보통)보다 약간 높은 수준이다. 둘째, 실직자들의 전환학습은 경쟁력과 자신감 구축(9단계)과 높은 상관을 보이며, 의미관점별 비판적 반성(3단계), 전환과정의 공유(4단계), 새로운 행동 계획(6단계), 지식과 기술의 습득(7단계) 과는 중간정도의 상관을 보인다. 셋째, 실직자들의 전환학습에 대한 관련변인들의 설명력은 52.1%이며, 각 변인별 영향력의 중요도는 경쟁력과 자신감 구축(9단계)이 가장 높고, 다음으로 전환 과정의 공유(4단계), 의미관점별 비판적 반성(3단계), 배우자의 경제력, 실직 당시 직업능력의 순이다. The purpose of this study was to measure the levels of transformative learning(TL) and to identify related variables, which were germane to job losers. The population for this study was adult job losers excluding someone who retired due to the age limit. Because the exact number of job losers in Korea could not be identified, this study was restricted to the target population of the job losers participated in 719 re-employment training programs at the period of the survey. A sample of 630 job losers in 34 re-employment training programs was selected from the target population by using of one stage cluster sampling. The data were collected through mail survey and on-site interview. Finally, the data from 410 respondents were used for the data analysis after exploring that all respondents answered the survey instrument honestly. Descriptive and inferential statistics were introduced for the data analysis. In each statistical analysis, a p-value of .05 was considered to indicate statistical significance. The major conclusions of the study were as follows: First, the levels of transformative learning process(TLP) of job losers were high in step 2) self-examination, step 5) exploration of options, and step 6) planning of a course of action. Overall level of TL of job losers was a little above the theoretical mean. Second, higher level of correlation was identified between TL and TLP step 9) and medium level of correlations were identified among TL and TLP step 3), 4), 6) and 7). Third, the associated variables explained 52.1 % of TL of job losers. TLP step 9) building of competence and self-confidence explained the most of the TL, and step 4) recognition of the transformation process, step 3) critical reflection of meaning perspectives, economic status of the spouse, and occupational competency at the period of job loss were next four important variables which explained last proportion of the TL.

      • 셀룰로스계 혼화제를 사용한 수중불분리성 콘크리트의 최적 배합

        진치섭,엄장섭,박현재,윤재환 부산대학교 생산기술연구소 2001 生産技術硏究所論文集 Vol.60 No.-

        수중불분리성 콘크리트는 통상적인 수중 콘크리트와는 개념부터 다르다. 콘크리트에 수중불분리성 혼화제를 혼합하면 콘크리트의 점성이 증가되고 수중에서의 재료분리에 대한 저항성이 현저히 증가된다. 이 효과는 수중콘크리트 자체의 신뢰성을 높여줄 뿐만 아니라 타설지역의 환경보존에도 현저한 기여를 하게 된다. 본 연구에서는 셀룰로스계 수중불분리성 혼화제 (수용성 셀룰로스 에틸계)와 고유동화제 (고축합 트리아진계)의 첨가량 변화에 따른 수중불분리성 콘크리트의 제반 물성 변화를 검토하고 비교적 정온 상태의 해상 환경에 적용할 수 있는 수중불분리성 콘크리트의 치적 배합을 결정하였다. Antiwashout underwater concrete is quite different in concept from conventional underwater concrete. By mixing an antiwashout admixture with concrete, the viscosity of the concrete is increased and its resistance to segregation under the washing action of water is enhanced. The effect of this is not only to greatly improve the reliability of concrete placed under water, but it also has remarkable effects on environmental preservation in the construction area. In this study, property tests of antiwashovt underwater concrete have been carried out, as variable add of special admixture, i.e antiwashout underwater agent (Hydroxy Ethyl Cellulose), superplasticizer (High condensate Tri - Azine). We made the antiwashout underwater concrete have enough strength to endure with easy construction. And we have decided the optimal mix proportion far antiwashout underwater concrete under standard state.

      • 채널 식각형 비정질 실리콘 박막 트랜지스터에서 배면에 수소 이온 도핑효과

        장진,최종현,이경하,임병천,김창수 慶熙大學校 레이저 工學硏究所 1997 레이저공학 Vol.8 No.-

        We have studied the effect of the hydrogen ion doping on the free surface of back channel etched a Si:H TFTs. The hydrogen ion doping on the back channel etched TFT reduces the off-state photo leakage current by one order of magnitude. The reduction of the photo-leakage current is due to the creation of defect states at the free surface by hydrogen ion doping. After hydrogen ion doping on the free surface, the field effect mobility change little, but the threshold voltage increases, which is due to the state creation in a-Si:H by ionized H ions. Furthermore, the off-state leakage current under frontlight illumination can be reduced by 2 orders magnitude by hydrogen ion doping on the back channel of a Si:H TFT.

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