혈액투석 중인 말기 신장질환 환자의 우울과 삶의 질

김형준,이우미,안선호,송주흥,김재민,김성완,이상열,Kim, Hyoung-Jun,Lee, Woo-Mi,Ahn, Seon-Ho,Song, Ju-Heung,Kim, Jae-Min,Kim, Sung-Wan,Lee, Sang-Yeol 대한불안의학회 2006 대한불안의학회지 Vol.2 No.2

Objective : In this study, we investigated the prevalence of depression and its impact on the healthrelated Quality of life (HRQoL) of the patients with End-Stage Renal Disease (ESRD) on Hemodialysis. Method : The Quality of life (QOL) of patients was evaluated by HRQoL Questionnaire, "Medical Outcome Survey 36-Item Short Form Health Survey Korean Version (SF-36-K)". The patients on Hemodialysis in ESRD, were chosen from the hemodialytic room at Wonkwang University and Jeongeup-Asan Hospital. The number of patients was 95 (64 from Wonkwang University Hospital and 31 from Jeongeup-Asan Hospital) and all of them were above 19 years old. We performed various investigations to find a statistical correlations between HRQoL and physical & psychosocial factors such as the demographic characteristics, clinical characteristics (hemoglobin level and albumin level etc), and the score of Beck's depressive inventory (BDI). Results : The HRQoL value of patients on hemodialysis in ESRD is far poorer than the HRQoL reference value of Koreans and Americans, who are in normal healthly. The prevalence of depressive symptoms by BDI of the ESRD patients on hemodialysis is 68.6%, and age and depression have negative correlations with HRQoL of the patients. However, education level, serum albumin level, and social support have positive correlations with HRQoL. The patient group with depression has significantly poorer HRQoL than the group without depression. Conclusion : The HRQoL of ESRD patients on hemodialysis is not good in both physical and mental aspects. The prevalence of depression is very high and depression has negative impact of HRQoL of patients. Based on our study, it is essential to accompany with therapeutic Strategy to improve the HRQoL of ESRD patients on hemodialysis.

상황인지 센서를 활용한 지능형 산불 이동 예측 및 탐지 알고리즘에 관한 연구

김형준,신규영,우병훈,구남경,장경식,이강환,Kim, Hyeng-jun,Shin, Gyu-young,Woo, Byeong-hun,Koo, Nam-kyoung,Jang, Kyung-sik,Lee, Kang-whan 한국정보통신학회 2015 한국정보통신학회논문지 Vol.19 No.6

본 논문에서는 상황 인식 센서를 활용한 화재 발생 예측 및 탐지 방법을 제안한다. 기존 기상 및 비전 센서 기반의 산불 방재 시스템의 경우 카메라 센서로 획득한 영상을 조명변화에 강인한 색상공간인 HSI(Hue, Saturation, Intensity) 모형으로 변환시켜 처리하여 산불영역에 대한 특징을 추출하고 있다. 그러나 이 경우 단일 카메라 센서가 넓은 범위에 화재를 감지하기 때문에 넓은 범위의 화재가 발생하기 전까지는 화재발생을 감지하는데 어려움이 있다. 따라서 본 논문에서는 센서를 활용하여 실시간으로 온도, 습도, Co2, 불꽃유무정보를 습득하여 화재를 판단하는 알고리즘과 그에 따른 화재의 확산경로와 속도예측 및 안전구역 확보 알고리즘을 제안한다. 제안된 알고리즘은 복합적 인 상황에 따라 부여된 가중치를 수집된 데이터에 부여하여 화재를 판단하고, 시간에 따른 상황인식 분석을 통해 화재 이동방향과 속도를 예측하여 안전구역을 확보하는 기법이다. In this paper, we proposed a forest fires prediction and detection system. It could provide a situation of fire prediction and detection methods using context awareness sensor. A fire occurs wide range of sensing a fire in a single camera sensor, it is difficult to detect the occurrence of a fire. In this paper, we propose an algorithm for real-time by using a temperature sensor, humidity, Co2, the flame presence information acquired and comparing the data based on multiple conditions, analyze and determine the weighting according to fire in complex situations. In addition, it is possible to differential management of intensive fire detection and prediction for required dividing the state of fire zone. Therefore we propose an algorithm to determine the prediction and detection from the fire parameters as an temperature, humidity, Co2 and the flame in real-time by using a context awareness sensor and also suggest algorithm that provide the path of fire diffusion and service the secure safety zone prediction.

The effects of oxygen and hydrogen on the surface morphology of MgO films deposited by ion-plating

김형준,Jeong Jun Kim,Ki Bum Kim,Gi Sung Lee 한양대학교 세라믹연구소 2009 Journal of Ceramic Processing Research Vol.10 No.4

The effects of oxygen and hydrogen on the surface morphology of MgO films, deposited by ion-plating, which is the protective layer of plasma display panels (PDP), were investigated. The surface morphology and crystalline planes were influenced not by the amount of oxygen but by the amount of hydrogen; the shapes and sizes of grains were changed from small triangles (50 nm), to large triangles (100-200 nm), to lozenge-shapes (100 nm), and then to very small (under 20 nm) round shapes with increasing amounts of hydrogen. The preferred orientations of the MgO films were (111) and (222) without hydrogen. However, (111) and (222) peaks decreased, and (200) planes appeared, with larger amounts of hydrogen. The crystallinity of the MgO film was hardly detected in the case when excess hydrogen (over 90 sccm) was introduced.

기후변화 대응 현황 및 그린 ICT

김형준,정해원,Kim, Hyeong-Jun,Jeong, Hae-Won 한국정보통신학회 2009 한국정보통신학회지 Vol.10 No.1

오자환(五子丸)의 Peroxynitrite 제거 작용

김형준,정지천,Kim, Hyung-Joon,Jeong, Ji-Cheon 대한한방내과학회 2005 大韓韓方內科學會誌 Vol.26 No.1

Objectives : Peroxynitrite $(ONOO^-)$, fonned from the reaction of $O_2^-$ and NO, is a cytotoxic species that can oxidize several cellular components such as proteins, lipids and DNA. It has been implicated in the aging process and age-related disease such as Alzheimer's disease, rheumatoid arthritis, cancer and atherosclerosis. Due to the lack of endogenous enzymes to thwart $ONOO^-$ activation, developing a specific $ONOO^-$ scavenger is remarkably important. The aim of this study was to investigate scavenging activities of $ONOO^-$ and its precursors, NO and $O_2^-$ and its scavenging mechanism of Ojawhan. Methods : To investigate scavenging activities of $ONOO^-$, NO, $O_2^-$ and its scavenging mechanism using fluorescent probes, DCFDA, DAF-2 and DHR 123. The $ONOO^-$ scavenging activity on Ojawhan was assayed by measuring oxidized dihydrorhodamine 123 (DHR 123) by fluorometry. Oxidative stress was induced by strong oxidants t-butyl hydroperoxide (t-BHP). Endothelial cell (YPEN-1) was used for detection of intracellular oxidative stress. Results : Ojawhan markedly scavenged authentic $ONOO^-$, $O_2^-$ and NO. It also inhibited $ONOO^-$ induced by $O_2^-$ and NO which are derived from SIN-1. Furthennore, ${\underline{Ojawhan}}$ blocked lipopolysaccharide (LPS)-induced $ONOO^-$, $O_2^-$ and NO generation utilizing kidney homogenates of LPS-injected mouse and inhibited t-BHP-induced ROS and $ONOO^-$ in endothelial cell culture system. Conclusions : These results suggest that Ojawhan be developed as an effective $ONOO^-$ scavenger for the prevention of $ONOO^-$ involved diseases and age-related diseases.

물의 주거로서 더 갤러리 카사 델 아구아에 구현된 리카르도 레고레타의 건축언어

김형준,Kim, Hyoung-Jun 한국주거학회 2014 한국주거학회 논문집 Vol.25 No.2

The Gallery of Casa del Agua in Jeju Island was demolished by Jeju local government on March 6 in the last year. In the meanwhile, a lot of people including the architectural field had denied the demolition. Regardless of sustained efforts in order that the building could be preserved as a work, Jeju government ended up with demolishing the gallery. The Gallery of Casa del Agua was a temporary building constructed as a model house of Casa del Agua. As the remaining period of the temporary building had passed, it was on the verge of demolition by Jeju government. Casa del Agua is 'dwelling of water' in Korean, and the building was the last posthumous work of Mexican architect Ricardo Legorreta. Knowing from the expression of 'dwelling of water', this house is a dwelling work of him. Through this work, his architecture languages that he had pursued contained in dwelling could be looked into. This study examined the background and course of demolition of the Gallery of Casa del Agua, 'dwelling of water' and arranged problems in the course of demolition. Then, the fact that the Gallery of Casa del Agua as an architecture work of Ricardo Legorreta included his architecture languageswas analyzed. For this, his universalarchitecture languages were examined and how the architecture languages were applied to the Gallery of Casa del Agua was analyzed. As a result, it could be known that languages of composition and languages of emotion consistently shown in his works were represented in the Gallery of Casa del Agua.

단기차익노린 석유수입 막기위해 석유무역업도 허가사항으로 해야

김형준,Kim, Hyeong-Jun 대한석유협회 1985 석유와 에너지 Vol.1985 No.5

연간궤적을 (連稈軌跡) 이용한 4링크기구의 합성

김형준,김경욱 ( Hyoung Jun Kim,Kyeong Uk Kim ) 한국농업기계학회 1982 바이오시스템공학 Vol.7 No.2

特殊한 機能을 遂行하기 위한 링크 機構의 設計에서는 링크의 連稈軌跡이 重要한 設計條件이 된다.移秧機의 移植機構나 바인던의 放出암은 모두 4링크 機構를 利用하여 作業遂行에 必要한 連稈軌跡을 있는 것이다. 必要한 連稈軌跡을 얻기위한 4링크 機構의 合成은 圖解的, 解析的 方法을 通하여 많은 硏究가 이루어져 왔으며 最近에는 콤퓨터를 利用한 機構合成에 對한 硏究가 활발하게 이루어지고 있다. 本硏究에서는 連稈軌跡의 點들을 利用하여 주어진 連稈軌跡을 얻기위한 4링크 機構의 合成에 對한 새로운 方法을 開發하고 이 方法을 콤퓨터 크로크 래밍하여 주어진 連稈軌跡과 콤퓨터로 合成較한 4링크 機構의 連稈軌跡을 比較검토 하였다. N/A

강변저류지에 의한 홍수저감 효과 분석을 위한 수리실험

김형준,배덕원,윤광석,Kim,Hyung-Jun,Bae,Deok-Won,Yoon,Kwang-Seok 한국방재학회 2011 한국방재학회논문집 Vol.11 No.6

강변저류지는 홍수저감효과 뿐만 아니라 생태적인 목적으로도 활용이 가능하여 최근 강변저류지 설치에 관한 연구가 활발히 진행되고 있는 상황이다. 그러나, 강변저류지 설치에 따른 홍수저감효과는 기존에 개발된 수치모형에 의존하고 있으며, 수리모형을 통한 기초연구가 부족한 상황이다. 본 연구에서는 강변저류지의 홍수저감효과를 분석하기 위하여 부정류 수리실험을 수행하였다. 강변저류지 설계시 고려인자인 설치위치, 유입부 마루높이 및 강변저류지 면적 등을 수리실험에서 다양한 조건으로 반영하여 수리실험을 수행하였다. 강변저류지의 홍수저감효과는 설치위치가 가까운 경우 가장 효과가 클 것으로 판단되며, 월류부 마루높이는 최대한 낮게 설치하는 것이 홍수저감에 효과적인 것으로 나타났다. 강변저류지 면적이 커질수록 홍수저감효과 또한 증가하지만, 기대할 수 있는 최대저감효과는 한계값에 수렴할 것으로 판단된다. 본 연구를 통하여 관측되고 분석된 결과는 강변저류지 설계시 유용하게 활용될 수 있을 것으로 판단된다. Detention basin is highly effective hydraulic structure which is available for flood mitigation and ecological characteristics. However, analysis of flood mitigation by detention basin is performed with numerical approaches only, there is not enough data obtained by experimental observation. In this study, physical experiment were performed under unsteady flow condition to analyze flood mitigation with detention basin. Various design factors such as location, later weir height and extent of detention basin were considered in this experimental observations. As the distance from detention base to target location become closer and later weir height become higher, we can expect more effective flood mitigation. As the area of detention basin area become lager, we also expect more higher flood mitigation effects. But, the flood mitigation effects from detention basin would converged to critical value. The obtained data will be useful for following studies about detention basin.

3M Lava^TM Esthetic monolithic zirconia를 이용한 전치부 심미 수복 증례

김형준,신수연,Kim, Hyung Joon,Shin, Soo-Yeon 대한턱관절교합학회 2018 구강회복응용과학지 Vol.34 No.4

Monolithic zirconia has been widely used in fixed partial dentures due to high strength and fracture toughness. Nevertheless, the usage of monolithic zirconia in anterior restoration was limited because of opacity. Recently, esthetic monolithic zirconia blocks are developed by improving translucency and using various shading systems. Manufacturer introduces 3M $Lava^{TM}$ Esthetic with increased cubic phase and fluorescent ingredients is more esthetic than previous monolithic zirconia. This case report describes favorable anterior restorations using translucent monolithic zirconia. 단일 구조 지르코니아는 높은 강도와 파괴 인성을 갖고 있어 고정성 보철 치료에 많이 활용되고 있으나 지르코니아 자체의 불투과성으로 인한 심미적인 한계 때문에 전치부 사용에서 어려움이 있었다. 최근에는 기존 단일 구조 지르코니아보다 투과성이 우수하며, 다양한 착색법을 이용하여 심미성을 개선한 지르코니아 블록들이 개발되고 있다. 3M $Lava^{TM}$ Esthetic 지르코니아는 제조사에 따르면 육방정계 결정상의 비율을 증가시키고 형광성 성분을 추가하여 기존 지르코니아보다 심미성이 우수하다고 소개되고 있다. 본 증례들에서는 심미성을 개선한 단일 구조 지르코니아를 이용하여 전치부를 수복하였으며 기능적, 심미적으로 만족한 결과를 얻었기에 이를 보고하는 바이다.