Near-Infrared Spectral Characteristics in Presence of Sun Glint Using CASI-1500 Data in Shallow Waters

( Joo Young Jeon ),( Sun Hwa Kim ),( Chan Su Yang ) 대한원격탐사학회 2015 大韓遠隔探査學會誌 Vol.31 No.4

Sun glint correction methods of hyperspectral data that have been developed so far have not considered the various situations and are often adequate for only certain conditions. Also there is an inaccurate assumption that the signal in NIR wavelength is zero. Therefore, this study attempts to analyze the NIR spectral properties of sun glint effect in coastal waters. For the analysis, CASI-1500 airborne hyperspectral data, bathymetry data and in-situ data obtained at coastal area near Sin-Cheon, Jeju Island, South Korea were used. The spectral characteristics of radiance and reflectance at the five NIR wavelengths (744 nm, 758 nm, 772 nm, 786 nm, and 801 nm) are analyzed by using various statistics, spatial and spectral variation of sun-glinted area under conditions of the bottom types of benthos, barren rocks and sand with similar water depth. Through the quantitative analysis, we found that the relation of water depth or bottom type with sun glint is relatively less which is a similar result with the previous studies. However the sun glint are distributed similarly with the patterns of the direction of wave propagation. It is confirmed that the areas with changed direction of wave propagation were not affected by the sun glint. The spatial and spectral variations of radiance and reflectance are mainly caused by the effect of sun glint and waves. The radiance or reflectance of more sun-glinted areas are increased approximately 1.5 times and the standard deviations are also increased three times compared to the less sun glinted areas. Through this study, the further studies of sun glint correction method in coastal water using the patterns of wave propagation and diffraction will be placed.

Elderly kidney transplant recipients have favorable outcomes but increased infection-related mortality

임정훈,Lee Ga Young,Jeon Yena,Jung Hee-Yeon,Choi Ji Young,CHO, JANG-HEE,Park Sun Hee,김용림,Kim Hyung-Kee,Huh Seung,유은상,Won Dong Il,Kim Chan-Duck 대한신장학회 2022 Kidney Research and Clinical Practice Vol.41 No.3

Background: The number of elderly patients with end-stage kidney disease has been increasing, but the outcomes of kidney transplants (KT) remain poorly understood in elderly patients. Therefore, we evaluated the clinical outcomes of elderly KT recipients and analyzed the impact of elderly donors. Methods: This retrospective cohort study included patients who underwent KT between 2000 and 2019. KT recipients were divided into four groups according to a combination of recipient and donor age (≥60 or <60 years); elderly recipients: old-to-old (n = 46) and young-to-old (n = 83); young recipients: old-to-young (n = 98) and young-to-young (n = 796). We compared the risks of mortality, graft failure, and acute rejection between groups using Cox regression analysis. Results: The incidence of delayed graft function, graft failure, and acute rejection was not different among groups. Annual mean tacrolimus trough level was not lower in elderly recipients than young recipients during 10-year follow-up. Mortality was significantly higher in elderly recipients (p = 0.001), particularly infection-related mortality (p < 0.001). In multivariable Cox regression analysis, old-toold and young-to-old groups had increased risk of mortality (adjusted hazard ratio [aHR], 2.89; 95% confidence interval [CI], 1.14– 7.32; p = 0.03; aHR, 3.06; 95% CI, 1.51–6.20; p = 0.002). However, graft failure and acute rejection risks were not increased in elderly recipients. Conclusion: In elderly recipients, graft survival and acute rejection-free survival were not inferior to those of young recipients. However, mortality, especially risk of infection-related death, was increased in elderly recipients. Thus, low immunosuppression intensity might help decrease mortality in elderly recipients.

Young-Ki Kim

Sun-young Park,Youngjae Lee,Jinyoung Song,Seok-ho Jeon,Ji-yoon Jeong,강병택,강지훈,장진화,장동우 한국임상수의학회 2016 한국임상수의학회지 Vol.33 No.3

Signalment: An 8-month-old female Alaskan malamute was presented for progressive cluster seizure disorder. Results: There were no abnormalities on neurological examination, survey radiographs, or blood analysis. Magnetic resonance (MR) imaging and computed tomography revealed extension of the olfactory bulb and frontal lobe into the nasal cavity. They also confirmed abnormal anatomy of the nasal turbinates within the rostral part of the nasal cavity and the absence of a cribriform plate. On T2-weighted and fluid-attenuated inversion recovery images, the herniated brain showed heterogeneous and hyperintense signals consistent with intraparenchymal edema. Transverse MR images showed brain herniation into the right frontal cavity and an asymmetrical lateral ventricle because of a left midline shift. On contrast-enhanced MR images, the protruding brain parenchyma was mildly enhanced. Ethmoidal encephalocele was suspected as the final diagnosis. Despite symptomatic treatment, the dog continued to exhibit seizures and was euthanized. Clinical relevance: Ethmoidal encephalocele is a rare disease in dogs. However, it could be considered as a cause of seizure in young dogs.

금 박막의 기계적 물성에 끼치는 두께와 미세조직의 영향

전영선(Young-Sun Jeon),이상주(Sang-Joo Lee),현승민(Seung-Min Hyun),이학주(Hak-Joo Lee) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10

We have used Visual Image Tracing(VIT) strain measurement system coupled with a micro tensile testing unit to test thickness and microstructure dependent mechanical behavior of Au film. The advantage using this method is to monitor the real time images of specimen during the test in order to determine its Young’s modulus, yield strength and tensile strength. 0.5, 1 and 2 ㎛ thick films were deposited by sputtering system. Free standing films were prepared through lithography and etching processes. Au films were annealed at 300℃ and 350℃ to achieve microstructure evolution and Focus ion beam (FIB SEM) and transmission electron microscopy (TEM) were employed to characterize grain sizes of films. Thickness and grain sizes dependent mechanical behavior such as stress-strain curve, Young’s modulus and yield strength of Au thin film will be presented.

집단적 치유와 제의로서 북한 영화 : <자강도 사람들>을 중심으로

전영선 ( Young Sun Jeon ),권정기 ( Jeon Kee Kwon ) 북한연구학회 2013 北韓硏究學會報 Vol.17 No.1

?집단적 치유와 제의로서 북한영화 읽기?는 영화 <자강도 사람들>이 집단적 치유와 국가적 의례로서 제작 되었음을 밝히는 데 목적이 있다. <자강도 사람들>은 2000년 조선예술영화촬영소에서 제작되어, 2001년에 개봉되었다. 2001년 5월에는 조선중앙TV를 통해 방영되었다. <자강도 사람들>은 1990년대중반 이른바 ``고난의 행군`` 자강도의 발전소 건설 과정을 다룬 영화이다. 이 영화에서 주목되는 것은 ``고난의 행군``을정면으로 다루었다는 것이다. 북한 문학 예술에서 ``고난의 행군``을 다룬 작품은 많지 않다. 1990년대 중반의 위기 상황은 북한 전체가 겪어야 했던 집단적 위기 상황이었다. 식량난, 자원난, 외화난으로 인해 수만에서 수십만의 죽음이 있었다. 영화에서도 고난의 행군 시기 자강도 사람들이 겪었던 문제를 정면으로 드러낸다. 먹을 것을 찾아 눈 덮인 벌판을 헤매다 죽은 정만호는 <자강도 사람들>을 상징한다. 북한 영화에서 죽음은 수령이나 체제를 위한 헌신적인 희생으로 그려졌다. 북한 영화에서 먹을 것이 없어 눈밭을 헤매다 죽는 장면은 거의 없다. 눈보라 치는 험한 환경도 극복해야 할 대상으로 상징되기 때문이다. 그 만큼 고난의 행군 시기 북한이 겪어야 했던 고난이 어려웠음을 보여준다. 정만호 뿐만 아니라 병실에서 암으로 죽어가면서도 약이 없어 치료받지 못하는 발전소 건설단의 여단장인 강호성의 아내 리선희, 발전소 건설을 위해 굴착작업에 나선 노동자들에게 옥수수 알갱이 40알을 확인하고 주어야 하는 처녀대원들의 모습은 고난의 행군에 대한 사실적인 고백이다. 예술이 국가의 절대적인 영향과 통제 안에서 이루어지는 북한에서 이런 영화를 만들고 방영한 이유는 무엇일까. 이 글에서는 집단적 치유를 명분으로 한 북한 체제의 자기 서사의 회복을 위한 과정으로 분석한다. 고난의 행군은 북한 당국의 이름으로 명명된 것이었기에 고난의 행군이 끝났음을 의미하는 집단적 문화의식이 필요하였다. 2000년 들어 북한 당국이 강조한 강성대국 건설이라는 목표는 고난의 행군에 대한 출구 없이는 설득력을 갖기 어려웠다. 고난의 행군이 완전하게 종결되었음을 선언하는 문화적 행위가 필요하였다. ``고난의 행군``이라는 집단적 트라우마로부터 벗어났음을 확인하는 집단적 치유 과정이 필요하였다. 고난의 행군의 원인을 제시하고 결과로서 승리하는 과정을 보여줌으로써 고난의 행군 트라우마에서 공식적으로 벗어 났음을 선언하는 것이다. 이 과정은 비판적 기억의 재구성 과정이 아니었다. 북한체제의 개입으로 진행된 집단적 기억의 재구성 과정이었다. 영화를 통해 고난의 행군에 대한 ``집단적 기억의 재구성``이 이루어진 것이었다. 드러내기는 불편하지만 반드시 지나갔음을 선언해야만 하는 ``고난의 행군``에 대한 문화적이고 의례적인 종식 선언이 바로 <자강도 사람들>이었던 것이다. The purpose of ?Reading North Korean Film as Collective Treatment and Suggestion?is to illuminate that the film <People of Jagang-do> was produced for collective treatment and as a national occasion. <People of Jagang-do> was produced by Joseon Arts Movie Studio in 2000, and released in 2001. In May of 2001, it was broadcasted through the Joseon Central TV. <People of Jagang-do> is a movie that pictures the construction process of a power plant in Jagang-do during the period of the ``Arduous March`` during the mid-1990s. The significance of this movie is that it directly issued the theme of the ``Arduous March``. Among North Korean art and literature, there are not many works handling the theme of the ``Arduous March``. The crisis during the mid-1990s was a collective experience that influenced all of North Korea. Food crisis, resource crisis, and foreign currency crisis resulted in tens of thousands to hundreds of thousands of death. Likewise, in the movie, the problems that the people of Jagang-do had to face during the period of the ``Arudous March`` are explicitly revealed. Chung Man-ho, who died while wandering around snow-covered fields to find food, is a symbolic representation of the <People of Jagang-do>. In North Korean movies, death is commonly portrayed as devoted sacrifice for their leader or the social system. In North Korean films, there are hardly any scenes with people dying in snow-covered fields in the process of searching for food. Hazardous environment such as a snow storm would be perceived as a symbolic hardship that needs to be overcome. This implies that the adversity North Korea had to go through during the ``Arduous March`` was tormenting. Not only Chung Man-ho but also the features of Lee Sun-hee, the wife of the power plant construction brigade commander Kang Ho-seong, who had to die of cancer with the lack of medication; and young female workers, who had to make sure the workers of the power plant excavation construction each received 40 seeds of corn, are a realistic confession of the ``Arduous March``. What could be the motives of North Korea to produce and broadcast this film, considering that art activity is usually allowed only under the absolute influence and control of the government. In this paper, it is analyzed as a process for restoration of the self-narrative epic of North Korean social system under the pretext of collective treatment. As the ``Arduous March`` was named by the North Korean authorities, there was a need to form a collective cultural consciousness signify- ing the end of the ``Arduous March``. The goal of building a strong and prosperous nation, increasingly emphasized since 2000, could not be persuasive without finding the exit to the ``Arduous March``. Thus, there was a need for a cultural act to announce the complete end of the ``Arduous March``. A collective treatment process to confirm the escape from collective trauma of the ``Arduous March`` was necessary. By suggesting the causes of the ``Arduous March`` and showing the process of winning as the result, it is to announce that they have officially overcome the collective trauma of the ``Arudous March``. This process was not a critical reconstruction process of memory. It was a reconstruction process of collective memory influenced under the intervention of the North Korean social system. The ``reconstruction of collective memory`` regarding the ``Arduous March`` was achieved through the movie. Although it was disturbing to reveal, the passing of the ``Arduous March`` had to be proclaimed, and the cultural and ritual announcement to mark the end of the ``Arduous March`` happened to be precisely the <People of Jagang-do>.

젊은 연령층과 고령층에서 발생하는 뇌동맥류의 임상적 비교연구

전용선,송시헌,고현송,염진영,김성호,김윤 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.8

말티즈견에서 발생한 승모판폐쇄부전 1례

전소분,박혜연,김선아,정금선,이영원,박성준,김덕환,송근호 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

A 10 years old, intact male, Maltese dog with clinical signs of labored respiration, exercise intolerance and increasing of coughing was referred to the Veterinary Medical Teaching Hospital of Chungnam National University. Physical examination revealed tachycardia, panting and mild cyanosis. This case was diagnosed as mitral valve insufficiency by clinical signs, ascultation, blood chemistry, radiography and electrocardiography. This dog was treated with ACE inhibitor (enalapril), diuretics (furosemide) and bronchodilator (aminophylline) for 14 days. After treatment, clnical signs were disappeared and also this dog was needed to be continuous monitoring and sodium restricted diet.

건축정보 분류체계 구축을 위한 정보 분류체계 비교 연구

전영일,이교선 동국대학교 산업기술대학원 1993 산업기술논문집 Vol.1 No.-

As far as the Korean building industry is concerned, information classification systems have been rather recently introduced, but sadly enough, with insufficient knowledge of theoretical and scientific background. In this context, there is a need for more sophisticated tools for formulating information requirements, an investigation into existing international systems in wide use and an establishment of a proper information classification system. The aims of the study is to establish the theoretical basis of information classification systems needed in the total building context, to investigate into related existing systems and to propose an information classification system suitable with the domestic building industry.

급성 포름알데히드 가스 흡입에 의한 흰쥐 후각상피의 형태학적 변화

백선용,전재기,문용석,황승영,노환중,고의경,왕수건 대한해부학회 1998 Anatomy & Cell Biology Vol.31 No.3

Quantitative Analysis on Air-Dispensing Parameters for Manufacturing Dome Lenses of Chip-on-Board LED System

Jeon, Eun-Chae,Lee, Je-Ryung,Je, Tae-Jin,Choi, Doo-Sun,Ham, Young-Bog,Lee, Eung-Sug,Choi, Sang-Kyu,Kim, Hwi Korean Society for Precision Engineering 2014 International Journal of Precision Engineering and Vol.15 No.11

A COB(chip-on-board) LED(light emitting diode) system has advantages such as low cost and good heat dissipation. LED chips are bonded on PCB(printed circuit board) directly without packaging process in case of COB LED systems. Dome lenses made of polymeric resin are generally covered on the bonded LED chips by air dispensing for preventing mechanical damage and making white light. However, it is hard to control the shape of dome lenses precisely due to viscosity of the polymeric resin. We analyzed the relationship of the shape of dome lenses and experimental conditions of the air dispensing in this study. We introduced a new parameter, air pressure * dispensing time, whose physical meaning is impulse per unit area, and obtained much clear relationship of dispensing parameters and shape parameters of the dome lens. This relationship was similar to viscoelastic behavior. The aspect ratio (height over diameter) was increased as the new parameter increased, and was converged to a certain value. The maximum aspect ratio could be calculated by Young's equation of contact angle.