• Journal of the Korean Data and Information Science Society
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• v.24 no.2
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• pp.257-265
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• 2013

As evaluating the health literacy is getting important, various measures for evaluation are being developed. Nevertheless, discussions about developing proper measures in Korean are still inactive. Therefore in this paper, we proposed Korean REALM (rapid estimate of adult literacy in medicine) measure that is composed of five point scale and investigated about its validity. As a result, we could find that Korean REALM measure which is composed of five point scale has high reliability, and that it formed one dimension as a result of factor analysis. Positive responses were lower than two point scale and correlation coefficient with NVS (the newest vital sign) appeared statistically significant. Therefore, we could conclude that Korean REALM measure that is composed of five point scale is a valid measurement. Furthermore, there were statistically significant differences between general students and department of nursing students about health literacy.

• Korean Journal of Psychosomatic Medicine
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• v.19 no.1
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• pp.34-40
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• 2011

Objectives: The purpose of this study is to test the reliability of the Korean version of self-compassion scale (K-SCS). Methods: The total of 484 participants were included in this study. Reliability studies were conducted and internal consistency were examined. Results: The internal consistency of the K-SCS was 0.76, and test-retest reliability was 0.53. Conclusion: The K-SCS appeared to be a reliable instrument for assessing self-compassion in Korean population. If supplements further studies of the validity, this scale may be applicable in clinical trials, research, clinical practice.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.45-45
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• 2020

하천 횡단구조물 하류부에서는 고유속 및 ±압력에 의해 하상재료가 유실되는 세굴현상이 발생한다. 이러한 세굴을 방지하기 위해 횡단구조물 하류부에는 석재, 콘크리트 및 콘크리트 블록 등을 설치 및 포설하여 하상보호공을 설치한다. 하상보호공을 설치하면 설치된 부분은 세굴이 방지 되지만, 하상보호공 끝단 이후에는 지반이 노출되어 있어 노출된 지반에서 고유속 흐름 및 압력변화에 의한 세굴이 발생하는 경우가 많다. 이에 본 연구에서는 하상보호공 끝단 즉, 하상이 노출된 지반에서 압력변화에 따라 하상재료가 유실되므로 압력에너지를 감쇄시키기 위한 하상보호장치를 개발하였다. 개발한 하상보호장치는 본래 다수개가 열을 지어 메트릭스 형태로 설치되도록 하여야 하지만 실험 여건상 단일체로 수리실험을 진행하였다. 하상보호장치는 상판과 하판이 조립된 형태이며 상판과 하판 사이에 이격공간이 구비되어있다. 하상보호장치 검증을 위해 상판과 하판에 쓰이는 판은 수로재질과 같은 아크릴로 제작하였으며, 하상재료의 공극률을 반영하여 다공성 판으로 제작하였다. 다공판의 전체 구멍 면적 대비 판 면적은 35 % 로 동일하다. 상판 구멍 지름 15.0 mm, 4.5 mm 2가지로 제작하였으며, 하판 구멍 지름 3.0 mm 으로 동일하다. 압력변화가 큰 곳에서 작은 곳으로 물이 이동하게 되므로 고유속 수리조건에서 상판과 하판 사이에서의 압력변화를 측정하기 위해 판 중간에 압력계를 설치하였다. 하상보호장치 설치지점 앞 0.3 m 부근에 PIV를 설치하여 유속을 측정하였다. 실험결과 상판의 구멍 직경(15.0 mm)이 클 경우 상판부 압력이 하판부로 전달되어 하판에서 측정되는 압력이 증폭 되었으며, 상판의 다공성 구멍 직경(4.5 mm)이 작을 경우 상판부에서 하판부로 전달되는 압력이 감소하여 하판에서 측정되는 압력이 감소하였다. 상판과 하판의 다공성 구멍의 직경을 적절한 사이즈로 조절하면 상판부의 압력이 하판부로 전달되는 것을 막고 압력에 의해 하상에서 흡출되는 유사를 막을 수 있는 것으로 판단되며 추후 상판과 하판의 다공성판 구멍 직경의 상대적 차이에 따른 압력 감소효율에 관한 연구가 필요하다고 판단된다.

• Journal of the Society of Disaster Information
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• v.13 no.1
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• pp.73-80
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• 2017

In this study, the panel joint behavior by the vehicle load moving on precast panel is analyzed. The frame was made for loading and the behavior was determined by using each measuring device. The static response of the panel was examined and compared with the theoretical value, and it was found that the characteristics were very reasonable. In addition, acceleration, velocity, and displacement were measured for dynamic impact evaluation, and the characteristics of moving load were analyzed in the test. The vibration frequency of the panel was measured for the dynamic response by the moving load, and the vibration characteristic was considered to be sensitive to the range of the load. As a result, it is considered that the dynamic response of the connection part should be careful in design because the characteristics are different according to the connection method.

• Composites Research
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• v.16 no.4
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• pp.1-9
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• 2003

2 ply laminated composite is regarded to simulate the interply behavior of the belt layer of the tire. It was cone with 3 dimensional FE(Finite Element) analysis to determine interply shear stress and strain. Widthwise, the shear strain was measured by the pin method. These results are compared with those of CLT(classical lamination theory) in center region and those of Kassapoglou's and Kelsey's theory in edge region. In the FE analysis. rubber is assumed as linear elastic material. and rubber/cord laminate as the orthotropic material composed of cord and rubber In the FE result, interlaminar shear stress causing the interlaminar delamination has the largest value in the edge region of the inner rubber layer. Numerical results obtained coincides with CLT well in the center region, and agrees with other theoretical result little in the edge region.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.26 no.4
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• pp.323-331
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• 2008

Digital close-range photogrammetric technique can measure and describe 3D geometric form from 2D image. This technique is a growing applicability in the field of sciences. Nevertheless, civil and mechanical field, which need measurements as precise as possible, use expensive measuring instruments in general. In addition there are occasions for analysis by means of visual method, since appropriate measuring instruments have been not yet available. This study therefore developed digital close-range photogrammetric technique with a movable orientation board to quickly measure deformation before and after destruction from simulated ground model of reinforced-soil wall. Then the results are compared with the measurements obtained using digital theodolite.

• Journal of the Korean Society of Radiology
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• v.10 no.1
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• pp.15-19
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• 2016

This Study aims at measuring scattered rays depending on the use of a flattening filter when radiation is irradiated using a linear accelerator. measurement of the scattered rays, an ionization chamber was used, and the energy of the irradiated radiation was 6 MV and 10 MV. The ionization chamber was located at the spot 15 cm, 25 cm, 35 cm and 45 cm far away from the center of gantry rotation, and the scattered rays were measured according to whether a flattening filter was used or not and to the distance. As the result of investigation of 100 cGy about each energy, when the flattening filter was not used with 6 MV, it occurred at a low level of 65%, and with 10 MV at that of 55%. In other words, it's been concluded that when a flattening filter is not used for radiation dose of the parts around the critical organ, scattered rays generate in a small quantity, and it's a useful way to decrease the stochastic effect of radiation.

• 한국방재학회:학술대회논문집
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• 2010.02a
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• pp.79.2-79.2
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• 2010

실제 교량 바닥판의 거동은 반복하중에 의한 피로누적 손상에 의해 발생되므로 성능분석을 위해서는 피로 실험결과를 통한 구조거동 분석이 이루어져야 할 것이다. 이에 본 논문에서는 현재 개발 중인 초간편 강합성 바닥판의 피로성능을 파악하기 위해 일점 재하 방식으로 반복 하중을 재하 하였다. 실험체의 거동을 파악하기 위해 변위계를 설치하여 변위를 측정하였고 이 실험의 결과로 신형식 바닥판인 초간편 강합성 바닥판의 피로 파괴 양상을 알 수 있었으며 피로 곡선을 얻을 수 있었다. 하지만 바닥판의 파괴요인 중 외부 환경적 요인과 실제 차량 하중 이동을 모사한 윤하중 재하 시 피로 성능에 대한 연구가 추가로 이루어져야 할 것으로 판단된다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.38 no.10
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• pp.1031-1037
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• 2010

This paper proposed lightweight aluminum bipolar plates as an alternative for conventional graphite bipolar plates in fuel cell systems used as a power source for small reconnaissance UAVs. Since bipolar plates occupy more than 80% of the total weight of the fuel cell system, lightweight aluminum bipolar plates can improve the overall payload and flight time of the fuel cell UAV. The aluminum and graphite bipolar plates were fabricated to compare the performance of each of them. A 15% higher performance per weight was obtained from aluminum bipolar plates than the graphite bipolar plates. Also, the performance of a single cell using aluminum bipolar plates was evaluated under various operating conditions.

• Composites Research
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• v.12 no.6
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• pp.1-7
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• 1999

The change of the coefficients of thermal expansion(CTE) of Carbon/Epoxy was investigated for the temperature variation and a prediction model for the change of CTE was proposed. Elastic properties and CTEs in the principal material directions were measured in the range of room temperature to cure temperature and characterized as functions of temperature. By applying the characterized properties to the classical lamination theory, a computational method to predict the change of CTEs of a general laminate for temperature variation was proposed. the coefficients of thermal expansion of laminates with various stacking sequences were measured and compared with those predicted. Good agreements between the predicted results and the experimental data show that the c hanges of CTEs of a general laminate for temperature variation can be predicted well by using the proposed method.