• 대기
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• 제23권1호
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• pp.103-112
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• 2013

In this study, we developed a fog classification algorithm to classify fog type based on fog generation mechanism. For the analysis period of 1986-2005, 15,748 fog events had been reported from the 40 observational sites in South Korea. Thus, practically, it is almost impossible to individually classify the fog type of the whole fog events occurred in South Korea manually. In this study, the characteristics of fog during the research period were investigated and the fog classification flowchart were developed base on the analysis, and the fog classification algorithm was applied for the classification of fogs occurred at the observational sites. Finally, the classified fog-type and hindcasted fog occurance results obtained from the flowchart were evaluated for verification.

• 대한공간정보학회지
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• 제10권5호
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• pp.53-65
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• 2002

The most widespread techniques for DEM generation are stereoscopy for optical sensor images and SAR interferometry(InSAR) for SAR images. These techniques suffer from certain sensor and processing limitations, which can be overcome by the synergetic use of both sensors and DEMs respectively. This study is associated with improvements of accuracy with consistency of image's characteristics between two different DEMs coming from stereoscopy for the optical images and interferometry for SAR images. The MWD(Multiresolution Wavelet Decomposition) and HPF(High-Pass Filtering), which take advantage of the complementary properties of SAR and stereo optical DEMs, will be applied for the fusion process. DEM fusion is tested with two sets of SPOT and ERS-l/-2 satellite imagery and for the analysis of results, DEM generated from digital topographic map(1 to 5000) is used. As a result of an integration of DEMs, it can more clearly portray topographic slopes and tilts when applying the strengths of DEM of SAR image to DEM of an optical satellite image and in the case of HPF, the resulting DEM.

• 한국환경과학회지
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• 제27권11호
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• pp.1141-1154
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• 2018

Numerical experiments were carried out to investigate the effect of data assimilation of observational data on weather and PM (particulate matter) prediction. Observational data applied to numerical experiment are aircraft observation, satellite observation, upper level observation, and AWS (automatic weather system) data. In the case of grid nudging, the prediction performance of the meteorological field is largely improved compared with the case without data assimilations because the overall pressure distribution can be changed. So grid nudging effect can be significant when synoptic weather pattern strongly affects Korean Peninsula. Predictability of meteorological factors can be expected to improve through a number of observational data assimilation, but data assimilation by single data often occurred to be less predictive than without data assimilation. Variation of air pressure due to observation nudging with high prediction efficiency can improve prediction accuracy of whole model domain. However, in areas with complex terrain such as the eastern part of the Korean peninsula, the improvement due to grid nudging were only limited. In such cases, it would be more effective to aggregate assimilated data.

• 한국생활과학회지
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• 제21권2호
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• pp.197-211
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• 2012

This purpose of this study was to explore the meaning and significance of experiences encountered by preservice teachers' during their observational practicum at day care centers. This study involved one cohort of 32 junior students who were majoring in early childhood education at a 4-year university. Data was analyzed using qualitative research methodology. The findings were as follows: 1) the meaning and significance of students'experiences related to observing children was to develop a trusting relationship with children and a cooperative relationship with teachers in an unfamiliar context. 2) the meaning and significance of students'experiences in observing children was to understand the children and their circumstance. 3) the meaning and significance of students'experience in observing children was to understand the importance of listening in child-teacher spoken interaction.

• 한국임상수의학회지
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• 제5권2호
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• pp.95-99
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• 1988

An observational study on the recurrences of left abomasal displacement after surgical correction was conducted in 178 Holstein cows. The correction methods were right flank omentopexy (A), right ventral paramedian abomasopexy (B) and left flank abomasopexy (C). Four(5.4) out of 74 cows by method A, 2(2.0) out of 101 cows by method B and 1(33.3%) out of 3 cows by method C had the recurrence of the disease after the first operation. As for the method A, 3 cows and a cow recurred 13-18 months and 27 months after the first operation, respectively. As for the method B, recurrence of the disease in two cows occurred 14 and 19 days after surgery, respectively. In a cow which had been indicated by method C, the recurrence was recurred 14 months after the operation.

• 동의생리병리학회지
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• 제31권4호
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• pp.238-245
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• 2017

This retrospective observational study was aimed to evaluate that Daoyin Exercise therapy improves the symptoms related to lumbar disc herniation. We analyzed the medical records of 7 patients, who satisfied with inclusion and exclusion criteria. The subjects of the study were the patients who were prescribed Daoyin Exercise Therapy and Korean medical treatments for lumbar intervertebral disc herniation at Dunsan Korean Medicine Hospital of Daejeon University from July 25th, 2016 to March 31th, 2017. The effects of Daoyin Exercise Therapy was evaluated by comparing before and after taking Daoyin Exercise Therapy through 0-10 Numeric Rating Scale(NRS), Roland & Morris Disability Questionnaire(RMDQ), Trunk Extension Flexion(TEF) Program, EuroQol five Demension Questionnaire(EQ-5D, EQVAS) of the symptoms including lower back pain. The Daoyin Exercise Therapy combined with Korean medicine treatment reduced NRS($3.357{\pm}3.038$) and RMDQ($9.50{\pm}6.364$), and improved Muscle endurance($44.429{\pm}45.136$), EQ-5D($0.09{\pm}0.12$) and EQVAS($6.571{\pm}19.260$) of the 7 patients without side effects. These results implied that Daoyin Exercise Therapy might helps to improve symptoms of patients with lumbar disc herniation by reducing the symptoms of lower back pain and improving muscle endurance, quality of life, strength enhancement and core muscles.

• Journal of Platform Technology
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• 제10권4호
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• pp.91-96
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• 2022

오늘날 기술이 국가 경쟁력과 직결되는 기술패권 경쟁의 흐름 속에서 연구개발 투자뿐만 아니라 연구개발에 대한 보안중요성이 강조되고 있다. 그러나 연구개발 보안사고 발생이 가져오게 되는 위험성에도 불구하고 연구산출물에 대한 유출사고는 계속해서 발생하고 있다. 본 연구는 이러한 문제를 해결하고자 연구개발 산출물에 대한 유출사고의 사례를 분석하여, 연구기관 중심의 거시적인 보안관리체계보다는 연구현장에 있는 연구자에 대한 규정 개발이 시급하다는 1차적 결론을 도출하였고, 그 다음 현장 관찰방법론을 통해 연구자 중심의 보안대책 설계 방향을 크게 4가지로 세분화하였다. 본 연구를 통해 도출된 연구자 보안대책 설계 방향은 향후 연구 현장에 특화된 규정 및 연구기관 보안 관리 체계 개발을 위한 기초자료로 활용될 것으로 기대한다.

• 천문학회보
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• 제32권2호
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• pp.38.2-38.2
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• 2007

• 대한관절경학회:학술대회논문집
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• 대한관절경학회 2006년도 제15차 추계학술대회 심포지움
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• pp.9-11
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• 2006

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 1998년도 봄 학술대회 발표논문집 디자인 학 연구
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• pp.6-7
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• 1998