세계적 패러다임 변화에 따른 도심형 한옥의 발전방향에 관한 조사 연구

한종훈(Han, Jong Hun),박미진(Park, Mi, Jin),곽동화(Kwack Dong Wha) 대한건축학회 2012 대한건축학회 학술발표대회 논문집 Vol.32 No.2

신우신염으로 오인된 부종양증후군을 동반한 신세포암

한민철,김재헌,박성재,변동원,강덕희,심봉석 이화여자대학교 의과대학 2004 EMJ (Ewha medical journal) Vol.27 No.2

Renal cell carcinoma can presents wide range of signs and symptoms, and commonly associated with paraneoplastic syndrome. Paraneoplastic manifestations are present in up to 20% of patients with renal cell carcinoma. There is convincing evidence that renal cell carcinoma tumor cells elaborate proteins that serve as mediators of endocrine (ex ; ectopic production of parathyroid hormone-related protein or erythropoietin) as well as nonendocrine paraneoplastic syndromes. A paraneoplastic syndrome may be the various clinical presentation of renal cell carcinoma in a significant number of patients, therefore mimicked other general disease. We report a case of renal cell carcinoma associated with paraneoplastic syndrome mimicking pyelonephritis.

UCC를 통한 효율적인 안전교육 방안

한영근,김성훈,이동녘,구범회,김연범 明知大學校 産業技術硏究所 2008 産業技術硏究所論文集 Vol.27 No.-

There are many potential dangers around our life, but we are laking in the consciousness of safety because accidents do no happen frequently. If an accidents occurs, an ability to deal with it is so weak that it can be enlarges to a disaster. Therefore it is important to accustom ourselves to manage dangers and this can be realized by traing. In this study, the traditional traing methodologies are compared and analyszed in order to find an efficient traing way for the public. Also, we propose a traing method by using UCC(User Created Contest) which is a growing communication and content tool in the Internet environment nowadays.

전하안면 고경이 작은 Ⅲ급 부정교합자의 골격유형에 관한 두부방사선 계측학적 연구

한동헌,차경석 대한치과교정학회 1996 대한치과교정학회지 Vol.26 No.2

부정교합의 특징을 파악하고 유형별로 분류하여 진단 및 치료에 적절히 적용함이 예후에 상당히 중요하다 하겠다. 안모의 우형은 여러 형태적인 특징이 상호 결합된 하나의 Syndrome으로 인식할 수 있으며 어느 특정한 계측항목만으로는 분류될수 없는 것이다. 전후방적인 부정교합의 구분이외에도 수직적인 부조화 양상을 함께 고려한 비교 연구가 다각적으로 시도되어지고 있으나 분류의 기준이 어느 한 특징 요소만을 강조하는 경향이 있어 여러 골격 유형이 혼합되어 분류, 비교 되어지는 단점이 있었다. 본 연구는 전하안면 고경이 작은 3급 부정교합에 혼재되어 있는 골격유형을 분류하고 각 유형간의 특징을 비교 분석하기 위하여 시행되어졌으며 단국대학교 부속 치과병원 교정과에 내원한 부정교합자중 혼합치열기이면서 전하안면 고경이 작은 3급 부정교합자를 선별하여 실험군으로 하여 다음과 같이 결론을 얻었다. 1. 전하안면 고경이 작은 3급 부정교합은 수직적인 양상을 따라 3가지 Subtype으로 분류할 수 있다. 2. Subtype 1은 하악지가 크게 발육되 있는 것이 특징으로 후방 구치 치조부의 hypopiasia는 인정되지않으며 전방위치하여 전하안면 고경이 낮아지고 하악하연 경사도가 뚜렷이 작아져 있다. 3. Subtype 2는 안모의 전반적인 수직고경이 작은 것이 특징으로 하악지 발욱은 정상이거나 미약하고 후방 구치 치조부의 hypopiasia가 뚜렷하여 전하안면 고경이 작아지나, 하악하연 경사도는 정상범주를 유지한다. 4. Subtype 3는 안모의 전후 수직고경이 정상범주이나 정상안면이 전하안면보다 많은 비율을 점유하는 것이 특징으로, 하악지의 고경은 정상범주이나 후방 구치 치조부의 hypo;iasia가 인정되며 전하안면 고경이 작고 하악하연 경사도도 작게 나타난다. 5. 각 유형별로 그 특징을 반영하는 Discriminative indext는 다음과 같다. LAFH: 유형과 상관없이 전하안면 고경이 작은 경우를 충실히 나타내준다. FHR : P로/AFH의 비로 정상에 가까운 경우 Subtype 1을 분별해 준다. FHI : RH2/IH의 비로 정상에 가까운 경우 subtype 2를 분별해 준다. FPI : (ALFH/ATFH - AUFH/ATFH) X 100의 값으로 아주 작은 경우, subtype 3을 분별해 준다. 6. 각 유형의 차이는 기능적인 차이를 반영하는 것으로 사료되며 기능적인 차이를 확인하고 치료와 연관시키는 것이 중요하다고 사료되어진다. A given facial type can be considered as a syndrome in which various features are aggregated, so a single parameter is not sufficient to accurately identify a given facial type. This study was designed to identify & characterize the skeletal types that blend under the headline-'C1 Ⅲ,deepbite'. Cephalograms of thirty-four untreated mixed dentition patients, selected mainly on the basis of clinical impression of C1 Ⅲ with reduced lower face heights were studied. The following conclusion can be drawn. 1. C1 Ⅲ malocclusion with reduced lower face height could be classified into three types. 2. Subtype 1 was identified by the followint features : strong ramus, more anteriorly positioned upper molars without alveolar hypoplasia, acutely reduced Mn. plane angle. 3. Subtype 2 was characterized by a short ramus, sharply reduced postrior alveolar height, and normal Mn. plane angle. In general, this type had hypoplasia tendency in the vertical dimension. 4. In subtype 3, the AUFH occupying more percentage than ALFH was a outstanding feature. Ramal height was in normal range, alveolar hypoplasia and slightly reduced Mn, plane angle was observed. 5. The features of the subtypes were reflected in certain indices, which can be regarded as discriminative index. LAFH: if reduced, regardiess of subtypes, indicates reduced lower ant. face height consistently. FHR: when this ratio is increased, it indicates subtype 1 FPI: when this ratio is normal range, it indicates subtype 2. FPI: if reduced greatly, it indicates subtype 3.

전하안면 고경이 작은 3급 부정교합자의 골격유형에 관한 두부방사선 계측학적 연구

한동헌,차경석 단국대학교 치의학연구소 1995 단국대치의학연구소논문집 Vol.7 No.1

강원도 사북-고한 지역의 석탄광 폐석에 대한 물리적, 역학적 특성 연구

임한욱,정윤영,목진호,김종훈,김재동,신동오 강원대학교 석재복합신소재제품연구센터 1996 석재연 논문집 Vol.1 No.-

석탄광 폐석의 건설용 골재로서 활용 가능성을 검토하기 위하여 폐석의 주요 구성암석인 사암, 사질혈암, 혈암, 탄질혈암을 대상으로 기초물성실험, 역학적 실험 및 골재원 특성 실험을 실시하였다. 시험결과치의 평균값을 기준으로 할 때 사암, 사질혈암, 혈암은 골재로서 활용이 가능하나, 실험치의 분산도가 심하여 활용가능 폐석과 불가능한 폐석이 혼재되 있음을 확인하였다. 반면에 탄질혈암은 골재원 특성이 가능하나 강도등 물성에서는 사용이 곤란한 것으로 판단되었다. 따라서 앞으로 폐석중 활용가능한 사암, 사질혈암 및 혈암을 효율적으로 분급하는 방안과 금번에 실시하지 못한 골재의 알카리 반응시험 등이 추가로 보완되었으면 한다. An experimental program was undertaken to test rock wastes from coal mines, for use as a new source of aggregate. Physical and mechanical properties, required for aggregate materials, of major constituents of rock wastes including sandstones, sandy shales, shales, and coal shales, were measured in the laboratory. Test results showed that the sandstones, sandy shales and shales tested in this study might possibly be used for construction aggregates, the highly scattered test data indicated considerable proportion of unusable rocks. In case of coal shales, the aggregate characteristics were generally adoptable but some physical properties such as rock strength were lower than required. In conclusion, it is suggested that an effective procedure for sorting the rock wastes, and additional tests such as alkali-aggregate reaction should be supplemented.

치과병원에서 사용되는 진단영상에 대한 JPEG 2000 압축률에 대한 평가

정기훈,한원정,유동수,최순철,김은경 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.3

Purpose : To find out the proper compression ratios without degrading image quality and affecting lesion detectability on diagnostic images used in dentistry compressed with JPEG 2000 algorithm. Materials and Methods : Sixty Digora periapical images, sixty panoramic computed radiographic (CR) images, sixty computed tomographic (CT) images, and sixty magnetic resonance (MR) images were compressed into JPEG 2000 with ratios of 10 levels from 5 : 1 to 50 : 1. To evaluate the lesion detectability, the images were graded with 5 levels (1: definitely absent; 2: probably absent; 3: equivocal; 4: probably present; 5: definitely present), and then receiver operating characteristic analysis was performed using the original image as a gold standard. Also to evaluate subjectively the image quality, the images were graded with 5 levels (1: definitely unacceptable; 2: probably unacceptable; 3: equivocal; 4: probably acceptable; 5: definitely acceptable), and then paired t-test was performed. Results : In Digora, CR panoramic and CT images, compressed images up to ratios of 15 : 1 showed nearly the same lesion detectability as original images, and in MR images, compressed images did up to ratios of 25 : 1. In Digora and CR panoramic images, compressed images up to ratios of 5 : 1 showed little difference between the original and reconstructed images in subjective assessment of image quality. In CT images, compressed images did up to ratios of 10 : 1 and in MR images up to ratios of 15 : 1. Conclusion : We considered compression ratios up to 5 : 1 in Digora and CR panoramic images, up to 10 : 1 in CT images, up to 15 : 1 in MR images as clinically applicable compression ratios.

에지 영상을 이용한 MPEG 비디오의 점진적 장면전환 검출

류한진,유헌우,장동식 한국경영과학회 2001 한국경영과학회 학술대회논문집 Vol.- No.1(2)

In this paper, a new algorithm for dissolve scene change detection in MPEG frame sequences is proposed. The proposed algorithm is based on the fact that most of dissolve curves can be characterized by a variance distribution of edge information in the frame sequences. Average edge frame sequences are obtained by performing "sobel" edge detection twice. Features are extracted by comparing a variance with those of local blocks in the average edge frames. Those features are further processed by the opening operation to obtain a smoothing variance curve. The lowest variance in the local frame sequences is chosen as a dissolve detection point. Experimental results show that the proposed algorithm retrieves up to 18 dissolves in total 20 dissolves of some tested videos.

사업장 소음 폭로에 의한 일과성 역치 상승과 회복

조수헌,하미나,한상환,주영수,성주헌,강종원,윤덕로,송동빈,이명학,김선태 大韓産業醫學會 1996 대한직업환경의학회지 Vol.8 No.2

To determine the recovery time from noise-induced temporary threshold shift(TTS), a prospective field study was conducted at three worksites where workers are known to be exposed high level of noise. Subjects were selected according to answers on a questionnaire which inquired about otological history and previous noise exposure, including avocational, military and occupational exposures. After excluding employee with past otologic problems, recent exposure to high level noise, and under medications, total 92 employees participated in the study. Among 92 participants, complete consecutive audiometric examinations were carried out at 0∼2 hours, 5∼7 hours, 14∼16 hours after worktime noise exposure on 26 participants wearing hearing protectors and 22 participants wearing no protective devices. The difference between the hearing level 0∼2 hours after noise exposure and 5∼7 hours is statistically significant by paired t-test(p<0.01). The median recovery times calculated from the data of 22 participants wearing no protective hearing devices are 15.6 hours at 4000Hz, and 7.7 hours, 10.3 hours, 8.4 hours at 1000Hz, 2000Hz and 8000Hz respectively. These data suggest that when measuring the pure tone audiometry for noise exposed workers, at least 16 hours noise-free interval is required.

Pb(Zr_0.56 Ti_0.44)O₃+ x[wt%]Cr₂O₃세라믹스의 길이진동에 대한 온도안정성

김동오,한성훈,이개명 濟州大學校 情報通信硏究所 1999 情報通信硏究所論文集 Vol.2 No.-

Recently mobile communication fields need piezoelectric ceramic resonators and filters as possible as small. The length-extensional vibration mode of a rectangular piezoelectric ceramic plate has the advantage of the small size. but the mode has not been studied sufficiently because it was not used extensively until now. In this paper. PZT + x[wt%] Cr₂O₃ ceramics with rhombohedral phase were fabricated. And temperature stability for the mode of the ceramic specimen was investigated. Contrary to our expectations. addition of the stabilizer. Cr₂O₃did not promote the temperature stability for the mode in the PZT ceramic specimen with rhombohedral phase.