천자서평 4 : 낙관주의가 건강한가 건강한 사람이 낙관주의자인가 ( 이현수 / 학지사 , 1999 )

이현수 한국상담선교연구원 ( 구 한국상담선교학회 ) 2001 상담과 선교 Vol.9 No.2

개방각녹내장에서의 아르곤레이저섬유주성형술과 선택적 레이저섬유주성형술의 단기 임상 효과 비교

이현수,백남호,문정일,Hyun-Soo Lee M,D,Nam-Ho Baek M,D,Jung-Il Moon M,D 대한안과학회 2005 대한안과학회지 Vol.46 No.12

Purpose: To evaluate the pressure-lowering effects of selective trabeculoplasty versus these of Argon laser trabeculoplasty. Methods: Fifteen eyes of 15 patients with primary open-angle glaucoma and ocular hypertension, all with IOPs over 30 mm Hg received SLT and 30 eyes of 30 patients with the same diagnosis were treated with ALT. Patients were evaluated after laser treatments at 1 hour, 1 day, 1 week, 1 month, and 3 months using slit lamp examinations and Goldmann applanation tonometry. Results: At 3 months postoperative, the SLT group had a mean IOP of 16.9±4.2 mmHg with a mean reduction of 31.2±20.1%, while the ALT group had a mean IOP of 17.9±5.4 mmHg with a mean reduction of 26.3±23.3%. Conclusions: Selective trabeculoplasty and Argon laser trabeculoplasty are equally effective statistically in lowering IOP over a 3-month period (p=0.47). SLT has been shown to be safe and effective in lowering IOP.

도자기용 아연 결정유의 재결정화 연구

이현수 한국결정성장학회 2020 한국결정성장학회지 Vol.30 No.4

Crystallization of zinc crystalline glaze requires demanding conditions such as the formation of a nucleating agentand the amount of nucleating agent, and growth of crystalline. Zinc crystalline glaze is hard to utilize in the industry becauseof its narrow range of the firing temperature, and the crystallization’s dependency on the quality of zinc. Stimulation ofzinc crystallization and formation of frit enable zinc crystalline glaze to be reconstituted in a various range of firingschedules, leading to the development of a competitive industrial glaze. 아연결정유약은 결정생성의 요건을 맞추기 위해서는 조핵제의 생성 - 조핵제의 양 조절 - 결정의 성장 등의 까다로운 소성과정을 거쳐야 한다. 소성온도 폭이 좁고 아연의 상태에 따라 결정에 영향을 미치는 등 사용이 용이하지 않다. 아연결정생성을 촉진시켜 이를 Frit화하여 폭넓은 소성조건에서 안정적으로 재결정화도록 하여 상용유약으로 유약을 개발할 수 있다.

난민신청자 체류규정의 공법적 쟁점과 개선방안

이현수 헌법재판연구원 2018 헌법재판연구 Vol.5 No.2

The Refugee Act of 2013, based on distinguishment between in-country application and port of entry application, declares that in-country applicant could remain in the territory of Korea until the denial of the refugee status gets final (especially when the administrative or judicial review proceeding is pending on the denial, until that proceeding gets closed) (§ 5 clause 6 of the Act). This ‘Could Remain’ clause looks alien-friendly at first sight, but requires some clarifications. First, who can claim the benefit of the clause? In-country applicant only or port of entry applicant, too? The answer of the Refugee Act is the former. But the terminology ‘alien who is already in the territory’, in other words, in-country applicant is not clear enough to distinguish them from port of entry applicant, because to be physically in the port of entry can be said to be physically in the territory, too. And further, when a port of entry applicant get admission, there is no difference between the port of entry applicant and the in-country applicant, so we can find no reasonable answer to the question why the Refugee Act discriminate against the port of entry applicant in the context of ‘Could Remain’ clause. Secondly, what is the exact meaning of the § 5 clause 6? On one hand, some suggest the words of the text should be interpreted somewhat negatively, as that of non refoulement. On the other hand, some insist that the words of the clause should be given more positive meaning, that is, of asylum or temporary permission to remain. Considering that the Refugee Act of 2013 has distinctive clause of non refoulement, that is, § 3, it would be more logical that the ‘Could remain’ clause requires something more than the non refoulement of an alien. Thirdly, the legal nature of adjudication procedure of the Refugee Act is not clear(§ 21). If the procedure has been designed as a special administrative appeal, the level of independence of the adjudicating body should be more hightened. And finally we need to focus on the fundamental restructuring of the Refugee Act which has inefficient dual dichotomy approach, such as the dichotomy of in-country application and port of entry application, and the dichotomy of the recognition of refugee status and the asylum decision. 난민법은 난민신청이 이루어진 장소가 어디냐에 따라 국내 신청과 출입국항 신청을 구분한 후, 난민신청자는 난민인정 여부에 관한 결정이 확정될 때까지(난민불인정결정에 대한 행정심판이나 행정소송이 진행 중인 경우에는 그 절차가 종결될 때까지) 대한민국에 체류할 수 있다는 규정을 국내 신청 관련조항에두고 있다. 이러한 조문상의 위치로 인하여 해당 규정은 국내에서 난민신청을 한 외국인에 대해서만 일정 시기까지의 체류를 보장하는 것으로 해석될 수 있는데, 이처럼 국내 신청자에게만 체류관련보장규정이 적용된다고 보는 것은 ‘대한민국 안에 있는 외국인’ 개념이 불분명하다는 점, 출입국항에서 난민신청을 하였으나 심사회부결정을 받아 입국허가를 받은 외국인을 차별할 합리적 이유가 없다는 점 등을 감안할 때 설득력이 약하다. 따라서 해당 규정은 출입국항에서 난민신청을 하여 심사회부결정을 받은 후 입국허가를 받은 외국인에게도 적용되도록 개정되어야 한다. 해당 규정의 의미내용에 대해서는 난민신청자에 대한 적극적인 체류자격 부여의 근거규정이라는 견해와, 소극적인 강제송환금지의 시간적 한계를 확인하는 규정일 뿐이라는 견해가 대립되고 있다. 해당 규정은 법 제3조상의 강제송환금지규정과 그 규율범위가 상위하기 때문에 강제송환금지규정의 반복에 불과하다고 보는 것은 적절치 않으며 난민신청자에 대한 적극적인 체류자격 부여의 근거규정이라고 보아야한다. 물론 난민법이 강제송환금지의 예외사유에 대하여 침묵하고 있는 것은 반드시 시정되어야 한다. 현 난민법상 이의신청은 특별행정심판으로 의도된 것인지가 불분명하며 설령 특별행정심판으로 의도되었다 하더라도 행정심판법상 행정심판에 비하여 심판기구의 독립성을 기할 수 있는 방안이 현저히 미진하다. 따라서 특별행정심판으로서의 성질을 명확히 하는 법 개정이 이루어진다면 반드시 그와 더불어독립성 제고방안도 마련되어야 할 것이다. 난민신청을 국내 신청과 출입국항 신청으로 나누어 별개의 조문으로 규율하는 방식이 타당한가에 대하여 학계와 실무계의 숙고와 논의가 필요하며 난민인정 여부에 관한 결정과 체류상 지위에 관한 결정을별도로 나누고 있는 현재의 난민법의 틀도 재고되어야 한다. 난민인정결정과 체류자격부여 결정을 별도의 처분으로 이원화하게 되면 쟁송의 대상이 되는 처분의 개수만 늘어나게 되므로 난민인정을 구성요건으로, 체류자격부여 결정을 법률효과로 재구성함으로써 난민인정과 체류자격관련결정이 하나의 처분에서 모두 내려질 수 있도록 하는 것이 효율적인 자원배분의 관점에서 보다 적절할 수 있을 것이다.

부산지역 물류산업 경쟁력 분석 및 발전 전략

이현수 경성대학교 산업개발연구소 1997 산업혁신연구 Vol.13 No.-

청각장애학교 수준별 교육과정 운영 실태와 효율화 방안

이현수,명경미 한국특수교육교과교육학회 2008 특수교육교과교육연구 Vol.1 No.1

본 연구의 목적은 청각장애학교 수준별 교육과정 운영의 저해 요인을 밝혀 청각장애학교 수준별 교육과정의 효율화 방안을 모색하는데 있다. 이를 위하여 이 연구는 전국에 있는 18개 청각장애학교 교사들을 모집단으로 하여 300부의 설문지를 회수하여 276부를 분석하였다. 연구결과는 다음과 같다. 첫째, 청각장애학교 교육과정에 있어서 단위 학교의 수준별 교육과정의 필요성이 높게 나타났으나 교육과정에 대한 인식이 낮고, 교사들이 수준별 교육과정을 운영하는데 여러 가지 어려움이 있는 것으로 나타났다. 둘째, 청각장애학생의 교과서, 교육자료 등의 개발에 있어서 청각장애학생들의 학업성취 수준, 장애정도, 의사소통능력, 과정별(유․초․중 등) 등이 고려된 자료들이 개발되어야 하며, 셋째, 청각장애학교 수준별 교육과정의 운영형태는 학년 또는 학급 내 동질집단 편성이나 IEP 수업형태의 운영이 되어야 하고, 넷째, 청각장애학교 학생들을 수준별로 반 편성을 할 경우에는 개인적인 습관, 행동양식, 학습공간, 의사소통능력, 성적, 학생의 희망, 부모의 요구, 교사의 요구 등으로 나타났다. 이 연구는 청각장애학교 수준별 교육과정이 어떠한 방식으로 실행되어야 할 것인가를 제시하였다는 점에서 의의가 있다.

철골공사 공사관리 시스템 개발을 위한 철골부재 모델링에 관한 연구

이현수,장명훈 대한건축학회 1997 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.17 No.2

용액공정으로 제작한 리튬 도핑된 N-ZTO/P-SiC 이종접합 구조의 전기적 특성

이현수,박성준,안재인,조슬기,구상모,Lee, Hyun-Soo,Park, Sung-Joon,An, Jae-In,Cho, Seulki,Koo, Sang-Mo 한국전기전자재료학회 2018 전기전자재료학회논문지 Vol.31 No.4

In this work, we investigate the effects of lithium doping on the electric performance of solution-processed n-type zinc tin oxide (ZTO)/p-type silicon carbide (SiC) heterojunction diode structures. The proper amount of lithium doping not only affects the carrier concentration and interface quality but also influences the temperature sensitivity of the series resistance and activation energy. We confirmed that the device characteristics vary with lithium doping at concentrations of 0, 10, and 20 wt%. In particular, the highest rectification ratio of $1.89{\times}107$ and the lowest trap density of $4.829{\times}1,022cm^{-2}$ were observed at 20 wt% of lithium doping. Devices at this doping level showed the best characteristics. As the temperature was increased, the series resistance value decreased. Additionally, the activation energy was observed to change with respect to the component acting on the trap. We have demonstrated that lithium doping is an effective way to obtain a higher performance ZTO-based diode.

사료 단백질 및 에너지 수준이 재래닭의 성장과 혈액의 성상에 미치는 영향

이현수,강보석,나재천,류경선 한국가금학회 2008 韓國家禽學會誌 Vol.35 No.4

Two experiments were conducted to establish the basic data of feeding system in cross-bred Korean native chicks. A total of seven hundred twenty chicks were replaced the 36 floor pen for the first five weeks with 3 × 3 factorial design in Experiment 1. Four hundred eighty of five weeks old chicks were raised from six to ten weeks of age with 3 × 2 factorial design in Experiment 2. Dietary ME and CP were formulated to contain 3,000, 3,050, 3,100 kcal/kg and 21, 22, 23%, respectively in Experiment 1 and 3,050, 3,100, 3,150 kcal/kg and 18, 19% in Experiment 2. Weight gain, feed intake were measured and calculated the feed conversion. Blood were collected and analyzed at the end of experiments. In Experiment 1, weight gain showed significantly higher in 3,050, 3,100 kcal/kg treatments than 3,000 kcal/kg treatment (P<0.05), but was not different in CP treatments. Feed intake was statistically high in 3,000 kcal/kg treatment compared with 3,050 and 3,100 kcal/kg ones (P<0.05), and more increased in 21% CP treatments compared to that of 22 and 23 CP treatment (P<0.05). Feed conversion of birds fed 3,050 and 3,100 kcal/kg diet showed much lower than 3,000 kcal/kg treatments (P<0.05). FCR was signicantly improved (P<0.05) in chicks fed diets containing 21 and 22% CP as compared to that fed 20% CP. Blood protein, glucose, and total cholesterol tended to increase in high energy and diet treatments. Blood HDL was increased as dietary energy increased, whereas LDL increased in low CP treatments. In Experiment 2, weight gain was not consistent between treatments, but more increased in 18% CP treatments compared to that of 19% CP treatment from six to ten weeks old in cross bred chicks (P<0.05). Feed intake was similar to the result of weight gain, but more increased in 19% CP treatment than 18% CP treatment (P<0.05). There were no statistically difference in FCR, but seemed to improve as dietary ME increased. Blood total protein and glucose increased as dietary CP was high, but triglyceride and HDL increased in high versus low ME (P<0.05). The results of these experiments suggested that optimum dietary ME and CP, were 3,050, 3,150kcal/kg and 22, 19% for the first five weeks and second one, respectively. Two experiments were conducted to establish the basic data of feeding system in cross-bred Korean native chicks. A total of seven hundred twenty chicks were replaced the 36 floor pen for the first five weeks with 3 × 3 factorial design in Experiment 1. Four hundred eighty of five weeks old chicks were raised from six to ten weeks of age with 3 × 2 factorial design in Experiment 2. Dietary ME and CP were formulated to contain 3,000, 3,050, 3,100 kcal/kg and 21, 22, 23%, respectively in Experiment 1 and 3,050, 3,100, 3,150 kcal/kg and 18, 19% in Experiment 2. Weight gain, feed intake were measured and calculated the feed conversion. Blood were collected and analyzed at the end of experiments. In Experiment 1, weight gain showed significantly higher in 3,050, 3,100 kcal/kg treatments than 3,000 kcal/kg treatment (P<0.05), but was not different in CP treatments. Feed intake was statistically high in 3,000 kcal/kg treatment compared with 3,050 and 3,100 kcal/kg ones (P<0.05), and more increased in 21% CP treatments compared to that of 22 and 23 CP treatment (P<0.05). Feed conversion of birds fed 3,050 and 3,100 kcal/kg diet showed much lower than 3,000 kcal/kg treatments (P<0.05). FCR was signicantly improved (P<0.05) in chicks fed diets containing 21 and 22% CP as compared to that fed 20% CP. Blood protein, glucose, and total cholesterol tended to increase in high energy and diet treatments. Blood HDL was increased as dietary energy increased, whereas LDL increased in low CP treatments. In Experiment 2, weight gain was not consistent between treatments, but more increased in 18% CP treatments compared to that of 19% CP treatment from six to ten weeks old in cross bred chicks (P<0.05). Feed intake was similar to the result of weight gain, but more increased in 19% CP treatment than 18% CP treatment (P<0.05). There were no statistically difference in FCR, but seemed to improve as dietary ME increased. Blood total protein and glucose increased as dietary CP was high, but triglyceride and HDL increased in high versus low ME (P<0.05). The results of these experiments suggested that optimum dietary ME and CP, were 3,050, 3,150kcal/kg and 22, 19% for the first five weeks and second one, respectively.

분자동력학과 몬테카를로의 혼성 분자시뮬레이션에 의한 다가전해질 복잡유체의 미세구조 특성 연구

이현수,전명석 한국화학공학회 2002 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.40 No.5

분자동력학(molecular dynamics)과 몬테카를로(Monte Carlo)의 혼성(hybrid) 알고리즘을 이용하여 harmonic spring 사슬과 하전된 단분자(monomer)들 사이의 Debye-Hu¨ckel potential로 표현된 다가전해질(polyelectrolyte)의 미세구조 특성을 규명하였다. Polyelectrolyte의 단일 사슬에 대해서 기존에 제안된 분자동력학과 몬테카를로의 혼성 알고리즘을 개선하여, polyelectrolyte의 conformation 특성인 끝단거리(end-to-end distance), 선회반경(radius of gyration), 그리고 구조인자(structure factor)를 한층 효율적으로 구할 수 있는 새로운 모사 기법을 개발하였다. 본 연구에서 새로이 개발된 알고리즘에 의한 모사결과와 기존 문헌값과의 비교를 통해 해석 방법의 타당성과 정확성을 검증하였다. 끝단거리와 선회반경간 평균제곱의 비와 구조인자의 계산을 통해, polyelectrolyte 단분자의 하전율(charge fraction)을 대변하는 Bjerrum length λ_β와 용액의 이온화세기에서 결정되어 용매의 screening 정도를 나타내는 Debye length k^-1가 증가함에 따라 사슬이 신장되는 거동을 확인하였다. The microstructural properties of charged polyelectrolytes described by a potential model regarding both the harmonic springs and Debye-Hu¨ckel interaction were investigated by employing a hybrid scheme of molecular dynamics(MD) and Monte Carlo(MC) simulations. Based on the previous hybrid scheme, a novel hybrid scheme has been developed in the present study, with which computational efforts are effectively reduced. We present the conformational properties such as end-to-end distance, radius of gyration and structure factor. It is evident that the simulation results of the present study agree well with the previously reported results. The elongation behavior of the polyelectrolyte chain can successfully be observed by the calculations of the characteristic mean square ratio of end-to-end distance to radius of gyration as well as the structure factor. As the Bjerrum length λ_β and the Debye length k^-1 increase, the polyelectrolyte chain becomes elongated.