A new species of the genus Cybaeus L. Koch, 1868(Araneae : Cybaeidae) from Korea

Joo-Pil Kim,Seong-Hun Ye,Hye-Sung Yoo 한국거미연구소 2014 한국거미 Vol.30 No.2

굴뚝거미속(Cybaeus)의 新種을 記載한다. 굴뚝거미속은 굴뚝거미科(Cybaeidae)에 속하는 거미로써 우리나라에서는 지금까지 5種이 報告되어 왔으나 이 新種의 추가로 다음 6種이 된다. In the present paper, the authors describe one new species of the family Cybaeidae from Korea, named Cybaeus cappa sp. nov. This specimen is deposited at the Joo-Pil Spider Museum, Namyangju-Si, Kyunggi-Do.

파활동경사를 고려한 소파블록 중량산정

유동훈(Yoo Dong Hoon),윤종주(Yoon Jong Joo),정평교(Jung Pyung Kyo),장문엽(Jang Moon Yup) 대한토목학회 2009 대한토목학회 학술대회 Vol.2009 No.10

비선형효과와 파형경사를 고려한 소파블럭 중량산정

유동훈(Yoo Dong Hoon),윤종주(Yoon Jong Joo),장문엽(Jang Moon Yup) 대한토목학회 2010 대한토목학회 학술대회 Vol.2010 No.10

중학교 가정과 '인간발달과 가족관계' 영역의 교육자료 (CD-Rom) 개발 및 현장 적용 연구 : 실천적 추론 수업을 중심으로

유태명,장혜경,유지연,김주연,김항아,김효순 한국 가정과 교육 학회 2000 한국가정과교육학회지 Vol.12 No.3

The purpose of this study is to develop lesson plans. teaching guide, and teaching materials applying practical reasoning teaching model in the area of 'human development and family relationship' in middle school home economics. The practical reasoning teaching model consists of five factors: Desired results, Awareness of context. Alternative approaches, Consequences of action, and Action. This study based on practical reasoning has following process: Curriculum development, Developing lesson plan. teaching material, and teaching guide. Experimental teaching and evaluation, Feedback, Production of CD-Rom. Teaching guide includes lesson Plan. workbook, multimedia materials and teaching resources, Especially teaching guide in CD-Rom can be used effectively in the actual teaching. In the classroom, this teaching model accomplished active and interesting Participation of teachers and students. It is proposed that practical reasoning teaching model should be applied to other areas of home economics. In addition, various teaching materials based on Practical reasoning need to be developed.

단열 측면 벽을 갖는 수직 환형 내의 유체충의 축대칭 열 불안정성

유주식,박승수 安東大學校 工業技術硏究所 2000 공업기술연구논문집 Vol.7 No.1

본 연구에서는 측면벽이 단열된 수직 환형 내에 있는 유체충의 축대칭 열불안정성을 조사한다. Galerkin 방법을 이용하여 임계 Rayleigh 수를 계산한다. 가장 불안정한 모드는 수직 방향으로 하나의 구조를 갖고 있으며 불안정이 일어나는 순간은 주로 환형의 폭에 의해 결정된다. 환형의 폭이 증가할수록 임계 Rayleigh 수는 감소한다. 단열 측면벽을 갖는 환형의 임계 Rayleigh 수는 전도 측면벽을 갖는 환형의 것보다 작다. This study investigates axi-symmetric thermal instability of a fluid layer confined in a vertical annulus with insulating lateral walls. The critical Rayleigh number is calculated by using the Galerkin method. The most unstable mode has one-roll structure, in the vertical direction, and the onset of instability is mainly dependent on the gap width of the annulus. As the scaled gap width increases, the critical Rayleigh number decreases. The critical Rayleigh number for an annulus with insulating lateral walls is smaller than that of the annulus with conducting lateral walls.

Multicellular Natural Convective flow of Low Prandtl number fluids in a Narrow Horizontal Cylindrical Annulus

유주식 安東大學校 工業技術硏究所 1998 공업기술연구논문집 Vol.5 No.1

Natural convective flow of low Prandtl number fluids in a narrow horizontal cylindrical annulus with D/L=12 is investigated. For low Prandtl number fluids, hydrodynamic instability induces oscillatory multicellular flows consisting of multiple like-rotating cells. For Pr=0, the region in which instability of conduction regime first forms is near the vertical section of annulus, but is extended upward with increase of Pr. After the onset of instability of conduction regime, diverse oscillatory multicellular convections are developed, as Gr increases. For a fluid of Pr=0, the multiple cells are distributed uniformly in the lower and upper regions of annulus.

DDC,MEA,WR-2721의 放射線 防護效果에 關한 硏究

柳星烈,陳秀一,鄭鉉佑,鄭引溶,高柱煥,고경환 대한방사선 방어학회 1986 방사선방어학회지 Vol.11 No.2

放射線障害 豫防藥劑의 人體適用은 副作用으로 臨床的 利用이 되지 못한 實情으로서 生理學的 및 藥理學的 毒性, 物理學的 諸性質, 藥劑의 作用機轉究明 및 臨床的 技術開發이 未洽하여 放射線 障害者에 對한 治療는 對症療法에 不過한 實情이다. 著者들은 放射線에 依한 人體障害豫防에 必要한 基礎資料를 얻기 위하여 現在까지 比較的 毒性이 적고 化學的으로 安定하며 藥效가 優秀하다고 알려진 DDC, MEA, WR-2721을 選定하여 實驗動物 非近交系 Swiss Webster(NIH-GP)마우스에 利用한 放射線 防護作用에 關한 實驗結果는 다음과 같다. 1) 各種 放射線 防護劑(DDC, MEA, WR-2721)의 마우스에 대한 適定 投與量은 各各 DDC; 1,000, MEA; 200, WR-2721; 400mg/kg이었다. 2) 實驗動物에 放射線 反致死線量 LD50/10에 對한 藥劑의 防護效果을SMS DDC;1.2, MEA; 1.4, WR-2721; 1.9이었고 LD50/30에 對 한 DMF는 DDC; 1.7, MEA; 1.8, WR-2721; 2.5이었다. 3) 空腹 小?腺(Jejunum crypt)의 放射線平均致死線量(Do)에 對한 防護效果 DMF는 DCC; 1.07, MEA; 1.21, WR-2721; 1.76이었고, 小?腺細胞의 致死線 平均致死線量에 對한 DMF는 DDC; 1.04, MEA; 1.08, WR-2721; 1.38이었다. 4) 以上으로 上記 3種의 放射線 防護劑中 WR-2721의 放射線 防護效果가 가장 優秀하였고 이 結果는 向後 臨床的 適用에 關한 硏究의 基礎資料가 될 것으로 思料된다. At present, the treatments of the radiation-induced diseases are only performing by the palliative treatment technique. Moreover, radiation protective agents are a little toxic for human being and this seriously limits their applicability with various complications in clinical uses. Accordingly, as a part of the aim of gain of the basic data for protective roles of some radioprotectors, the present investingation was carried out to evaluate the comparative radioprotective effects by the administration of DDC, MEA, WR-2721. Results are shown for statistically significant analysis and correlation with each group as follows; 1. The proper doses of the radioprotectors were DDC; 1,550mg/kg, MEA; 450mg/kg, WR-2721; 780mg/kg of the mouse body weight. 2. DMF(Dose modification factor) of LD50/10 and LD50/30 for whole body irradiation was DDC; 1.2, MEA; 1.4, WR-2721; 1.9 and DDC; 1.7, MEA; 1.8 and WR-2721; 2.5 respectively. 3. DMF for radiation reaction of jejunal crypt was DDC; 1.07, MEA; 1.21 and WR-2721; 1.76 and that of jejunal crypt cell was DDC; 1.04, MEA; 1.08 and WR-2721; 1.38 respectively. 4. Conclusively, WR-2721 was the most effective drung among the three radioprotectors and this result must be a supportive data for further study for clinical application.

CCD/LSB 방식의 형상측정시스템의 정밀도 향상 방법

유주상,정규원 한국공작기계학회 2001 한국공작기계학회 춘계학술대회논문집 Vol.2001 No.-

Since recent production system becomes that of the small quantity, large volume with high quality production, accurate and high speed inspection system is required. In such situation, non contact 3D measurement system which utilized CCD cameras is useful technique in terms of system cost, speed of data acquisition, measuring accuracy and application. However, it has low accuracy compared with contact 3D measurement system because of the camera distortion, non uniformity of laser distribution and so on. For those reasons, in this paper precision enhancement method is studied considering radial camera distortion, and laser distribution. A distortion correction method is applied even to the standard lens. The laser slit beam trajectory is determined by 3 method: based of the Gaussian function signal approximation, the median method, the center of gravity method and the peak point of the Gaussian function method.

건조효과를 고려한 준설매립토의 압밀거동

유남재,박병수,이명욱,이주원 강원대학교 산업기술연구소 2000 産業技術硏究 Vol.20 No.A

This research is to investigate the self-weight consolidation settlement and desiccation shrinkage settlement of soft marine dredging clay by performing numerical and experimental works. Large column test were carried out investigate the consolidation settlement considering effect of the self-weight and desiccation shrinkage, and centrifuge model test was also carried out investigate self-weight consolidation settlement. Results of centrifuge model and large column experiments about changes of settlement with time were analyzed by using the numerical technique of explicit finite difference method considering effect of the self-weight and desiccation based on the finite strain consolidation theory. Centrifuge model test results were in relatively good agreements with analyzed results in terms of self-weight consolidation settlement with time. Large column test results showed quite different values from the numerically estimated one, carried by experimental conditions.

재발성 류마티즘 환자에서 발작의 유발인자

주유철,이동민,양종태,신병철,임태영,서정균,정기영,최동헌,김원,조영신,고희관 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.2

Background and Objectives : Palindromic rheumatism (PR) is known to be triggered without any obviously inciting events in most patients, although, in a few cases, attacks have been noted to relate to another events such as weather change, childbirth, ingestion of certain foods, or over-exercise. The aim of this study was to characterize the triggering factors on palindromic attacks. Materials and Methods : We evaluated sixty-four patients with PR for the presence of triggering factors and the relationship between attacks and triggering factors by interview of patients. We considered that there was an probable association between episodes and PR, if episodes within 24 hours prior to PR had triggered at least 50% of all attacks and a definite association between episodes and PR, if episodes within 24 hours prior to PR had triggered 100% of all attacks. Results : In 15 patients (35.9%), there was a possible association between episodes of PR and initiating events. In 8 patients (12.5%), there was a definite association between episodes of PR and initiating events. The triggering factors were physical over-activity including exercise (19/64: 29.7%), foods, such as rawfish, crab, and chicken, including alcohol (19/96: 19.8%). However, there were no difference between the groups with and without the triggering factor in sex ratio, duration and onset of PR, the positive rate of rheumatoid factor and involved sites. Conclusion : Our observations showed that PR was triggered by physical over-activity more than in previous reports and hypersensitivity to foods was a causative factor in some patients with PR. However, patients with triggering factors had a similiar clinical profile to patients without triggering factors.