• 한국안광학회지
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• 제18권4호
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• pp.509-517
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• 2013

목적: 아베-코닉(Abbe-K$\ddot{o}$nig) 프리즘을 이용한 2.6X 광학식 스코프를 개발하고자 하였다. 방법: 먼저 대물렌즈의 초점거리와 유효구경의 크기를 고려하여 아베-코닉 프리즘을 설계하였다. 이렇게 설계되어진 아베-코닉 프리즘의 광학적, 기하학적 거리를 계산하였다. 이 계산 결과를 이용하여 전체 시스템의 광학적 유효거리 및 배율을 만족하도록 접안렌즈와 대물렌즈의 초점거리를 배분한 후 시스템을 최적화함으로서 전체 시스템을 완성하였다. 결과: Face length 11.5 mm를 가지는 아베-코닉 프리즘과 4매로 이루어진 초점거리 24.3 mm의 접안렌즈와 2매로 이루어진 초점거리 63.13 mm의 대물렌즈를 설계하여 약 2.6배율을 광학식 스코프를 완성할 수 있었다. 결론: 아베-코닉 프리즘을 채택한 2.6배율을 가지는 광학식 스코프를 설계 제작하였는데, $6.42^{\circ}$ 이내의 반 시야각에서 50% MTF 기준치로 200 cycles/rad의 분해능과 103 mm 유효 광학적 경통길이와 12.0 mm의 유효구경과 31 mm의 경통구경을 갖는 컴팩트한 광학계가 되었다.

• Geomechanics and Engineering
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• 제18권1호
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• pp.1-9
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• 2019

In this study, both 2D and 3D failure shapes of rock mass above the water-filled cavity are put forward when the surrounding rock mass cannot bear the pressure caused by the water-filled cavity. Based on the analytical expressions derived by kinematic approach, the profiles of active and passive failure patterns are plotted. The sensitivity analysis is conducted to explore the influences of different rock parameters on the failure profiles. During the excavation of the deep tunnels above the karst cavity, the water table always changes because of progressive failure of cavity roof. Therefore, it is meaningful to discuss the effects of varying water level on the failure patterns of horizontal rock layers. The changing laws of the scope of the failure pattern obtained in this work show good consistency with the fact, which could be used to provide a guide in engineering.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2012년도 제42회 동계 정기 학술대회 초록집
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• pp.141-141
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• 2012

X-선 반사율 측정법(XRR)은 비파괴적인 측정방법과 수 nm의 두께를 정밀하게 측정할 수 있는 장점으로 인하여 반도체 산업현장에서 많은 관심과 연구가 이루어지고 있다. 이러한 XRR은 두께 분석 측정의 정밀도를 향상시키고 부정확한 결과를 방지하기 위하여 측정기기를 검증하고 보정할 수 있는 두께 표준물질을 필요로 하고 있다. 본 연구에서는 XRR용 두께 표준물질을 이온빔 스퍼터링 증착방법을 이용하여 제작하였다. 두께 표준물질 제작에 있어 공기 중 노출에 의해 산화가 되지 않는 산화물 박막과 산화물 기판을 선택하였다. 후보물질은 glass, sapphire, quartz, SiO2기판과 HfO2, Ta2O5, Cr2O3 산화물 타켓을 이용하여 박막을 제작하였다. 제작된 후 보물질은 교정된 XRR을 통하여 박막의 두께, 계면 및 표면 거칠기, 밀도등 박막의 구조특성분석을 하였다. Glass, quartz의 경우 기판 표면 거칠기가 좋지 않아 제작된 샘플의 X-선 반사율 곡선이 급격히 떨어지면서 측정되는 각도의 영역이 작아졌다. Sapphire로 제작한 시편은 측정된 데이터와 simulation의 curve fitting이 양호하지 않았다. 이 중 SiO2기판을 사용하고 HfO2박막을 증착한 샘플이 다른 후보물질보다 XRR curve fitting 결과가 가장 양호하여 두께 표준물질로 응용하기에 적절하였다. 그리고 AFM (Atomic Force MicroScope)을 이용하여 기판의 거칠기 및 증착한 박막표면 거칠기 측정을 하였고, TEM (Transmission Electron Microscope)으로 두께 측정을 하여 XRR로 얻은 데이터와 비교하였다. 이러한 결과를 토대로 XRR용 두께 표준물질 제작할 수 있었고, 추후 불확도 평가 및 비교실험을 통하여 제작된 XRR용 두께 표준물질을 이용할 수 있을 것으로 기대된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 C
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• pp.1594-1596
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• 1996

The NDT(nondestructive test) using pulse echo method with piezoelectric transducers and the system for NDT including image processing were studoed. The system consisted of pulse generator and receiver, two step motors for X-Y scanner, PC-Scope for data aquisition and PC-Lab for trigger and motor driving. We tested and estimated at one point under the following conditions : 1) just water, 2) Aluminum without any crack and 3) Aluminum with hole. The estimated NDT result of whole area (point : $35{\times}20$) is compared with real samples.

• 대한방사선기술학회지:방사선기술과학
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• 제1권1호
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• pp.37-43
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• 1978

This Study was conducted, during the period of 8-16th, August in 1977 and 27th, January through 2, Feburury in 1978, to measure laking off and on time for patient's clothes at the radiologic department in general hospitals. The study dealt with three general hospitals which were classified into groups by ownerships; two university hospitals, one private hospitals. The scope of the study was limited to measurement's of taking off and on time except taking a radiograph. The results were summarized as follows: [1] In Summer, the average taking off ana on tine for male was 3 minutes and 7 seconds and 3 minutes and 43 seconds for female. The latter was longer than that for the former. [2] In Winter, the mean taking off and on time for male was 3 minutes 42 seconds, 4 minutes 17 seconds for female. [3] In this respect, the average taking off and on time for female was longer than that for male and that for winter was expended that for summer. [4] In Summer, regardless of age group and sex, the average taking off and on time for taking a radiograph was 3 minutes 25 seconds, and 3 minuteds 59 seconds in Winter. [5] Regardless of season, sen, and age, the mean time expended to take off and on for taking a radiograph was 3 minutes 43 seconds.

• Journal of Nutrition and Health
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• 제34권1호
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• pp.14-22
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• 2001

In this study, we examined the effects of dietary fatty acids and vitamin E supplementation on antioxidant systems in the rat brain regions. The Sprague Dawley rats were fed the experimental diets 3-4 wks prior to the conception. Experimental diet consisted of 10% fat(wt/wt) which were safflower oil(SO, poor in $\omega$3 fatty acids), mixed oil(MO, P/M/S ratio=1.03:1.45:1,$\omega$6/$\omega$3 ratio=6.3) and mixed oil supplemented with vitamin E(ME:MO+500mg vitamin E/kg diet). At 3 and 9 weeks of age of the newborn rats, frontal cortex(FC), corpus striatum(CS), hippocampus(H) cerebellum(CB) were dissected out from the whole brain. Activities of glutathione peroxidase(GSH-P(sub)x, superoxide dismutase(SOD) concentrations of malondialdehyde(MDA) were mesaured. Dietary fatty acids were not effective in antioxidative system for rat brain. However, when vitamin E was supplemented to the diet(ME), the activities of GSH-P(suh)x tended to increase in comparison to MO group. Therefore, the activites of GSH-P(suh)x of FC and H at the age of 3 weeks showed significant differences(p<0.05). The activities of Total-SOD tended to decrease in ME group compared to MO group. There were significant differences(p<0.05) in FC and CS at the age of 3 weeks. The activities of Mn-SOD tended to increase and Cu, Zn-SOD tended to decrease when vitamin E was supplemented. The activity levels of antioxidative enzymes at the age of 3 weeks and 9 weeks were similar. This suggested that the activity level of antioxidative enzymes reached to the adult level at the age of 3 weeks which is the end point of lactation period. The concentrations of MDA were not altered by experimental diets. When the activities of antioxidant enzymes were compared, the activities of antioxidant enzymes were the lowest in H and FC. In conclusion, the antioxidative system were not altered by dietary fatty acid at the age of 3 weeks and 9 weeks, but the supplementation of vitamin E altered the antioxidative systems. Therefore, these findings should be considered comprehensively in scope of the balance of various antioxidative systems and their interactions(Korean J Nutrition 34(1):14-22, 2001)

• 한국컴퓨터정보학회논문지
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• 제29권4호
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• pp.83-89
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• 2024

인터넷 익스플로러의 서비스 종료 이후 ActiveX의 사용이 종료됨에 따라 Non-ActiveX 정책이 확산되었다. Non-ActiveX 정책을 바탕으로 정해진 웹 페이지 표준 규약으로 HTML5가 채택되어 사용되고 있다. W3C(World Wide Web Consortium)에서 개발된 HTML5는 다양한 기능을 플러그인 없이 브라우저만으로 쉽게 사용할 수 있고, 기존 HTML에 비해 다양한 요소와 속성이 추가되었으며 API를 통해 더 나아진 웹 응용 환경을 제공하고 있다. 그러나 새로 추가된 기술들로부터 새로운 보안 취약점이 발견되었고, 이러한 취약점으로 인하여 공격 범위가 넓어졌다. HTML5가 적용된 웹 사이트에서 발생할 수 있는 보안 취약점을 찾기 위한 연구가 부족하다. 본 논문은 최근 5년 이내에 플러그인이 제거된 공공기관 웹 페이지를 대상으로 웹 페이지의 보안 취약점을 탐지하고 분석하여 웹 취약점을 가지는 태그 및 속성을 탐지하는 모델을 제안한다. 제안된 모델을 웹 페이지에 적용한다면 플러그인 제거 후에도 현재까지 웹 페이지의 웹 표준 준수 여부 및 취약점을 분석할 수 있어 신뢰성 있는 웹 서비스를 제공할 수 있다. 그리고 해킹 피해로 인한 금전적, 물리적 문제들을 예방하는 데 도움이 될 것으로 기대된다.

• Korean Journal of Geomatics
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• 제3권1호
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• pp.15-22
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• 2003

This study aims to construct a management system of road position information as part of the build-up to a maintenance and management system of highways. First, information on the positions of the roads were obtained by a real-time kinematic satellite surveying, and then the degree of accuracy was analyzed in comparison with the data of the existing design drawings. The linear coordinates of road center line obtained by using RTK GPS showed about 7.6-13.2cm errors in X and Y directions in the case of the national road No.2 section, and about 8.4-9.2cm errors in the case of local road No.1045 section. These errors were within the tolerance scope regulated by the TS survey, and could be practically used. In the case of vertical alignment, there were about 6.2cm errors in the Z direction in local road No.1045 section. Aerial photographs are normally used in producing numerical maps, and it can be practically used because the tolerance scope of the elevation control point is l0cm when the scale of aerial photographs is 1/1000. The management system of road position information, utilizing Object-Oriented Programming(OOP), was built having the data acquired in this way as the attribute data. The system developed in this way can enable us to spot the positions of road facilities, the target of management with ease, to easily update the data in case of changes in the positions of roads and road facilities, and to manage the positions of roads and road facilities more effectively.

• 한국의류학회지
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• 제31권4호
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• pp.633-645
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• 2007

The purpose of this study is to develop brassiere patterns which are both fitting and functional for women aged 19 to 24(the 1924 generation). We suggested a 'size chart for body measurements' for constructing basic brassiere patterns with six sizes of '70, 75', 'AA, A, B cups', which are used most frequently by the 1924 generation consumers. The scope of research was in reference to the statistical analysis results of the Size Korea(2004) body measurements and the results of the data from the preceding research. The 'drafting method for constructing basic brassiere patterns for the 1924 generation consumers' was completed by selecting a total of 18 subjects, 3 for each six sizes in the scope of research, and three wearing tests were carried out with the subjects. We compiled one brassiere pattern in six sizes obtained with the drafting method of constructing a basic brassiere pattern on another by block pattern in order to observe the phase of change in dimensions and shapes of paper pattern. The result was converted into the variations of a x-axis and a y-axis, and we suggested 'Size Grading Rule' and 'Cup Grading Rule' for the basic brassiere patterns. As the results of the wearing evaluation of the basic brassieres and measuring the variation in body dimensions by wearing brassieres, the dimensions and shapes of the basic brassieres suggested in this research proved to be fitting and to have a wearing effect that brings together and supports the breasts.

• 대한원격탐사학회지
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• 제40권3호
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• pp.317-317
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• 2024

Notice: This article has been retracted as a result of the review (on May 14, 2024) by the Research Ethics Committee of the Korean Society of Remote Sensing, which confirmed research misconduct (plagiarism). The Korean Journal of Remote Sensing (KJRS) Editorial Office received a report alleging plagiarism in a paper published in KJRS authored by Zong and Kohani (2021). Following a thorough investigation by our Research Ethics Committee, we found significant similarities between the original paper (Lee and Mortari, 2017) and the paper (Zong and Kohani, 2021) published in KJRS. The scope of the plagiarism included a number of identical figures, tables, and equations, as well as textual content. As a result, the Research Ethics Committee of the Korean Society of Remote Sensing has decided to retract the paper (Zong and Kohani. 2021) for deliberately using the ideas, research content, and results of others without proper approval or citation. To preserve academic integrity, we take responsibility for enforcing ethical policies and proceeding with the follow-up actions: 1. Disclosure and preservation of the facts and reasons for the retraction of the plagiarized paper, 2. Prohibition of submissions for the next three years for the authors of the plagiarized paper, 3. Notification to the authors’ affiliated institution of the retraction of the plagiarized paper. We deeply regret to report for retraction of the article and apologize to the readers of KJRS and to the authors of the original work for any inconvenience caused.