RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제
      • 좁혀본 항목 보기순서

        • 원문유무
        • 음성지원유무
        • 원문제공처
          펼치기
        • 등재정보
          펼치기
        • 학술지명
          펼치기
        • 주제분류
          펼치기
        • 발행연도
          펼치기
        • 작성언어
        • 저자
          펼치기

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재
      • KCI등재후보

        Development of Security Rights Law since the Codification of the Civil Code of Korea

        김재형 서울대학교 아시아태평양법연구소 2014 Journal of Korean Law Vol.13 No.2

        The Civil Code of Korea (hereafter “Civil Code” or “Code”) came into effect as of January 1, 1960. It would be meaningful to review changes taken place in a certain area of civil law since the codification. I would confine the scope of discussion to security rights law, especially, keun-mortgage and the Act on Security over Movable Property, Claims, etc. and the changes taken place in that area of the law since the codification of the Civil Code. I would like to explain how security rights law impacted the transactions system in Korea and how that, in turn, prompted the amendment of the Civil Code and the enactment of a number of special acts. The security rights law is basically modeled after the European civil codes, but it has diverged from its model and undergone some changes. Such changes have been achieved sometimes through the development of case law or legal theories, and other times by the enactment of new acts. The Act on Security over Movable Property, Claims, etc. has incorporated some elements of the American legal system, thereby attaching a new meaning and perspective to our history of reception of foreign legal systems.

      • KCI등재

        Simulation of the Through-Focus Modulation Transfer Functions According to the Change of Spherical Aberration in Pseudophakic Eyes

        김재형,김명준,윤근영,김재용,차흥원 한국광학회 2015 Journal of the optical society of Korea Vol.19 No.4

        To evaluate the effects of spherical aberration (SA) correction on optical quality in pseudophakic eyes,we simulated the optical quality of the human eye by computation of the modulation transfer function(MTF). We reviewed the medical records of patients who underwent cataract surgery in Asan MedicalCenter, retrospectively. A Zywave aberrometer was used to measure optical aberrations at 1–12postoperative months in patients with AR40e intraocular lens implants. The MTF was calculated for a5 mm pupil from measured wavefront aberrations. The area under the MTF curve (aMTF) was analyzedand the maximal aMTF was calculated while changing the SA (-0.2 ~ +0.2 μm) and the defocus (-2.0~ +2.0 D). Sixty-four eyes in 51 patients were examined. The maximal aMTF was 6.61 ± 2.16 at a defocusof –0.25 ± 0.66 D with innate SA, and 7.64 ± 2.63 at a defocus of 0.08 ± 0.53 D when the SA was0 (full correction of SA). With full SA correction, the aMTF increased in 47 eyes (73.4%; Group 1) anddecreased in 17 eyes (26.6%; Group 2). There were statistically significant differences in Z(3, –1) (verticalcoma; P = 0.01) and Z(4, 4) (tetrafoil; P = 0.04) between the groups. The maximal aMTF was obtainedat an SA of +0.01 μm in Group 1 and an SA of +0.13 μm in Group 2. Optical quality can be improvedby full correction of SA in most pseudophakic eyes. However, residual SA might provide benefits in eyeswith significant radially asymmetric aberrations

      • 코로나19와 민주주의의 위기

        김재형 민주화운동기념사업회 2020 민주주의 이슈와 전망 Vol.53 No.-

        코로나19는 지난 8개월간 전 세계적으로 엄청난 확진자와 사망자를 발생시켰을 뿐만 아니라 정치적, 경제적, 사회적으로도 심대한 영향과 변화를 가져왔다. 이 글은 코로나19로 인해 촉발된 인종주의, 민족주의, 권위주의의 등장과 그로 인한 민주주의의 위기에 대해서 살펴보고자 한다. 코로나19와 같은 범유행병 대응에 필수적인 국제사회의 협력은 미중 패권전쟁뿐만 아니라 이로 인한 WHO와 같은 국제기구의 신뢰 저하 등의 이유로 약화되었다. 그래서 개별 국가는 코로나19에 독립적으로 대응할 수밖에 없었다. 코로나19에 대한 대응은 검사, 추적, 치료 등의 의료기술뿐만 아니라 국경폐쇄 또는 봉쇄 등의 인구통제를 중심으로 이루어졌는데, 이 과정에서 개인의 자유를 억압하는 권위주의가 강화되었다. 또한 코로나19로 발생했거나 심화된 사회문제로 인하여 인종주의 및 민족주의가 득세하기도 했다. 이러한 상황에서 한국은 강력한 봉쇄가 아닌 상대적으로 이동의 자유를 보장하는 방식으로 코로나19를 성공적으로 막았기 때문에 외신의 주목을 받았다. 특히 코로나19에 권위주의적 방식이 더욱 효과적이라는 주장이 설득력을 얻어갈 때 한국의 사례는 민주주의적 방식 역시 효과적일 수 있다는 것을 보여주었다. 그러나 한국이 초기 코로나19 대응에 성공한 것은 사실이지만 지난 8개월간 한국 사회의 경험은 한국적 대응에 대한 성찰이 필요함을 보여준다. 특히 언택트라는 뉴노멀이 우리 사회가 지향해야 할 핵심 가치처럼 여겨지는 현재 상황은 재고할 필요가 있다. 예를 들어 ‘사회적 거리두기’ 시기 사회 일부의 코로나19의 위험은 감소했지만, 더 많은 노동자의 위험은 오히려 증가했다. 이처럼 기존의 불평등은 코로나19와 언택트를 통해 더욱 심각해지고 있다. 하지만 K-방역이라는 신화, 언택트라는 장밋빛 미래에 대한 약속은 이러한 사회문제를 비가시화하고 있다. 민주주의를 강화하고 불평등을 완화하며 공공성을 강화하지 않으면, 현재 제시되고 있는 기술과 산업 중심의 언택트는 우리 사회의 불평등을 더욱 심화시킬 것이다.

      • KCI등재

        Regioselectivities in Fe(III)-catalyzed Cycloisomerization Reactions of γ-Allenyl Alcohols

        김재형,김승욱,정민석,안광현,강은주 대한화학회 2015 Bulletin of the Korean Chemical Society Vol.36 No.12

        Iron-catalyzed intramolecular hydroalkoxylation reactions of allenes were performed to provide various tetrahydrofurans by regioselective 5-exo cyclization pathway, as the Lewis acidic activation of Fe(III) salts toward unsaturated CC bonds, allenes and alkenes. Cyclohexyl substituted allenes especially isomerized to dienes at a rapid rate, which underwent a competing 6-endo cyclization mode. The plausible mechanism was presented by experimental results of the reaction intermediates and computational study of Fe-allene and Fe-diene complexes.

      • KCI등재

        Measurement Reliability of Axial Length of the Human Eye by using Partial Coherence Interferometry

        김재형,문태환,채주병,형성민 한국광학회 2014 Journal of the optical society of Korea Vol.18 No.5

        To investigate the minimum near-infrared ray intensity required (quantifiable threshold value) for consistent measurements of axial length (AL) using partial coherence interferometry (PCI), we attached two polarizing lenses (PL) to two types of PCI (IOLmaster, ALscan). The near-infrared ray intensity of PCI was modified by rotating the axis of one PL at intervals of 5 degrees. The right eye of each volunteer was measured three times and the AL and signal-to-noise ratio (SNR) was recorded five times for each measurement. Reduction of light intensity was theoretically estimated using Malus’ Law. AL was measured consistently with both IOLmaster and ALscan until they reached 55 degrees (1.33 % of intensity) and 60 degrees (0.77%), respectively (P = 0.343, Log-rank test). In contrast, SNR decreased as light intensity decreased. In addition, to analyze media opacities that precluded measurement of AL, we retrospectively reviewed the medical records of patients unmeasurable by PCI (ALscan) from May to November 2013. Thirty-eight of 473 eyes (8.0%) could not be measured using ALscan due to media opacities, such as severe posterior subcapsular cataract (PSC, 11 eyes), hypermature cataract (9 eyes), and vitreous hemorrhage (18 eyes). The mean grades of vitreous haze and PSC were 7.72 ± 0.96 and 4.45 ± 1.04, respectively. In conclusion, up to 0.77-1.33% of near-infrared rays decreased, and AL could be measured consistently.

      • KCI등재후보

        Retinoic Acid-induced Differentiation of Rat Mesenchymal Stem Cells into β-Cell Lineage

        김재형,김경식,이상우,김현우,주동진,김유선,서활 대한이식학회 2015 Korean Journal of Transplantation Vol.29 No.3

        Backgrounds: Type I diabetes mellitus (T1DM), an autoimmune disease, is associated with insulin deficiency due to the death of β-cells. Bone marrow-derived mesenchymal stem cells (BM-MSCs) are capable of tissue repair and thus are a promising source of β-cell surrogates. Methods: In this study, the therapeutic potential of BM-MSCs as β-cell replacements was analyzed both in vitro and in vivo. First, we used retinoic acid (RA) to induce rat BM-MSCs to differentiate into cells of endodermal/pancreatic lineage. Then, differentiated rat BM-MSCs were syngeneically injected under the renal capsule of rats. Results: Analysis of gene expression revealed that rat BM-MSCs showed signs of early pancreatic development, and differentiated cells were qualitatively and quantitatively confirmed to produce insulin in vitro. In vivo study was performed for short-term (3 weeks) and long-term (8 weeks) period of time. Rats that were injected with differentiated MSCs exhibited a reduction in blood glucose levels throughout 8 weeks, and grafted cells survived in vivo for at least 3 weeks. Conclusions: These findings show that RA can induce differentiation of MSCs into the β-cell lineage and demonstrate the potential of BM-MSCs to serve as therapeutic tools for T1DM.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼