• 지질공학
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• 제26권1호
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• pp.23-32
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• 2016

ASTER 위성영상을 이용하여 팽창성 점토광물인 일라이트 인자 추출 및 SVM 통계분석을 통해 산사태 취약성을 평가하였다. 연구지역의 산사태 발생지역은 항공사진 판독 및 현장 조사를 통해 분석하였다. GIS 기반 공간데이터베이스로는 지형도, 토양도, 임상도, ASTER 위성사진을 이용하였다. 수치지형도에서는 경사 및 경사방향, 곡률도, 계곡과의 거리, 도로와의 거리, 토양도에서는 유효토심, 토질, 토양지형, 토양 배수정도 및 토양 모재, 임상도에서는 경급, 영급 및 밀도를 위성사진에서는 일라이트 인자를 추출하였다. 산사태 발생요인 데이터베이스와 SVM 통계분석 및 가중치 계산을 통해 각 요소간의 상관관계 취약성도를 구하였다. AUC 검증 결과 일라이트 인자 적용결과는 76.46%의 예측 정확도를 보였으며 일라이트 인자 미적용 모델은 74.09%의 예측 정확도를 나타내었다. 이는 일라이트 인자가 산사태 취약성도 작성에 있어 중요한 자료로 사용될 수 있음을 나타낸다.

• 한국공간정보시스템학회 논문지
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• 제6권2호
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• pp.39-49
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• 2004

이동통신 환경의 분산 응용에서는 사용자나 단말기의 위치 이동을 파악하여 서비스를 지속할 수 있는 모바일 기술이 요구된다. 이 문제를 해결하기 위해 상황 인식 미들웨어를 이용해 모바일 네트워크 상에서 사용자 혹은 사용자 디바이스의 CPU속도, 메모리 그리고 가용배터리의 변화를 적절히 지원하기 위한 연구가 많이 진행되고 있다. 여기에는 사용자와 디바이스에 대한 프로파일, 상황의 메타데이터가 필수적이다. 본 논문에서는 상황인식의 동적 반영을 지원하는 미들웨어 서비스에 필요한 메타서버를 모델링하고 구축했다. 메타데이터는 프로파일, 정책, 사용자 선호도로 구성되며, 메타 서버는 미들웨어의 요청에 따라 서비스 가능한가를 판별 후, 결과를 돌려준다. 멀티미디어 스트림을 제공하는 이동동신 환경에서 사용자나 통신 단말기의 상황이 변동되는 시나리오에 적용해 보았다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2009년도 학술발표회 초록집
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• pp.608-612
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• 2009

본 연구에서는 하수재이용에 따른 토양에서의 염분변화를 추정하기 위하여 SWAP(Soil-Water-Atmosphere-Plant) 모형을 선정하여 경기도 화성시 수원환경사업소 인근에 위치한 병점지구를 대상으로 모형의 적용성을 분석하였다. 실험에 사용한 관개용수는 1) 지하수(TR#1), 2) 하수처리장 방류수+여과+UV (TR#3)로 분류하여 실험에 사용하였다. 영농기간 동안 논으로 유입되는 총 유입수는 $1,724.2^{\sim}1,733.7$ mm 범위였으며, 이 중 약 64%가 강우에 의해 공급되었고, 나머지는 관개에 의하여 유입되었다. 유입관개수의 EC는 지하수 관개수인 TR#1이 다른 처리구에 비해 작았고, TR#3의 경우 $0.442{\sim}0.698$ dS/cm의 범위를 보였다. 모형의 보정과 검정을 위해서 대상지구에 FDR(Frequency Domain Reflection)을 설치하여 토양수분함유량과 염분농도를 토심에 따라 일단위로 모니터링 하였다. 토양함수량의 보정기간 중 토심별(50, 100, 140 cm) RMSE는 TR#1에서 $0.001^{\sim}0.002$ $cm^3cm^{-3}$, TR#3에서 $0.002^{\sim}0.006$ $cm^3cm^{-3}$으로 나타났으며, 검정기간 중 토심별 RMSE는 TR#1에서 $0.003^{\sim}0.064$ $cm^3cm^{-3}$, TR#3에서 0.001$cm^3cm^{-3}$로 나타났다. 토양염분의 보정기간 중 토심별 RMSE는 TR#1에서 $0.001^{\sim}0.023{\times}10^{-3}$ dS $m^{-1}$, TR#3에서 $0.028^{\sim}0.045{\times}10^{-3}$ dS$m^{-1}$로 나타났으며, 검정기간의 토심별 RMSE는 TR#1에서 $0.018^{\sim}0.037{\times}10^{-3}$ dS$m^{-1}$, TR#3에서 $0.004^{\sim}0.014{\times}10^{-3}$ dS$m^{-1}$로 적용성이 있는 것으로 나타났다.

• 한국결정학회지
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• 제4권1호
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• pp.6-10
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• 1993

11 β ,17 β -dihydroxy-9a-fluoro-l7a-methyl androst-4-en-3-one (Fluoxymesterone), CgoH29 FO,, orthorhombic, P2,2,2,, a=13.468(5) A, b= 19.554 (2)A, c=6.578(9)A, a=b=r=90˚, A (CuKa)=1.5406 A , Dm=1.289cm-3, Dc=1.299cm-3 and Z=4 at T=298k. The structure was solved by direct method using seminvariants of ggg Parity group and refined by the full-matrix least-square method, resulting model with reliability factor R=0.069 for 1098 unique reflection over 3σ . Ring A is an 1β-2a-half chair, 5 ring has a highly symmetrical chair conformation, C ring is in a distorted chair conformation and D ring is a 13aenveLope conformation. In the crystal structure, the molecules are packed with a hydrogen bond of 011-H23‥‥03(0.5+x, 1.5-y, 1.0-z) [1.94(9) A of H‥‥0.2.786(9)A of 0‥‥0 and 165(8) ˚ of

• 보건교육건강증진학회지
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• 제25권3호
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• pp.139-151
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• 2008

Objectives: Since 2000 interests in Healthy City Project has been growing fast in Korea. Amid this atmosphere, the need for establishing priorities when planning Healthy City Project and carrying forward the plan has arisen. Therefore, this study tries to conduct practical research on the manner of setting priorities of business valuation standard about Healthy City Project. Methods: The research was carried out with Healthy City experts and government official. And in this research the responses of 28 participants among 37 have been taken into consideration due to their consistent responses. Results: The results of Level 1 showed that the "social & environmental approach" accounted for more than the "individual approach". In the case of Level 2, fields resulted in order of "environment", "infrastructure", "behavior", "evaluation and reflection", "disease prevention and rehabilitation", and "setting approach". Conclusions: The findings derived from this study are first, it is feasible to suggest the ways of establishing priorities as to the evaluation standards for the Healthy City Project and second, the results present the ways to proceed in terms of what tasks should be done for the healthy City Project development.

• 한국환경과학회지
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• 제19권8호
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• pp.1067-1076
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• 2010

How would environmental education be implemented for effectiveness today? Deep reflection on the way of teaching environment in classes to achieve effectiveness is required. If there exist differences in students' environmental perception depending on environment class pattern, its most effective way should be looked for. In environmental education, inducing the students to have advisable attitude voluntary about environment is more important than teaching them environmental knowledge. From such view, students' active participation is necessary for successful environmental classes. Students need to be set to share their principle, values, attitude about environment problems at environmental class through presentation which is important factor to make them have advisable environmental attitude. Therefore, environmental class need to be carried out student-led way. For that, a class model need to be designed which will be helpful for the students to arrange and elaborate their emitting thought about environment problems through disclosing their thoughts to share them with fellow students which will end up in their advisable environmental attitude. This study aimed to find out the effectiveness of environmental collage making class contributive to offering various environmental perception to students and grasping others' thinking about environment. Fifty-eight 10th graders at U Science High School in Ulsan metropolitan city were selected for the study that carried out from 2010 April to June by choosing total 10 environmental themes divided into environmental collage making class applied to the 30 test group students, and general environmental class applied to 28 control group students. Following are the study results. First, in students' environmental sensitivity, the students in the environmental collage making class appeared to be higher compared with them in general environmental class. Second, in students' intentional environment action, the students in the environmental collage making class appeared to be higher compared with them in general environmental class. Third, in students' satisfaction with environmental class, the students in the environmental collage making class appeared to be higher compared with them in general environmental class.

• Biomolecules & Therapeutics
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• 제22권2호
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• pp.143-148
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• 2014

Marfan syndrome (MFS) is a dominantly inherited connective tissue disorder caused by mutations in the gene encoding fibrillin-1 (FBN1) and is characterized by aortic dilatation and dissection, which is the primary cause of death in untreated MFS patients. However, disease progression-associated changes in gene expression in the aortic lesions of MFS patients remained unknown. Using a mouse model of MFS, FBN1 hypomorphic mouse (mgR/mgR), we characterized the aortic gene expression profiles during the progression of the MFS. Homozygous mgR mice exhibited MFS-like phenotypic features, such as fragmentation of elastic fibers throughout the vessel wall and were graded into mgR1-4 based on the pathological severity in aortic walls. Comparative gene expression profiling of WT and four mgR mice using microarrays revealed that the changes in the transcriptome were a direct reflection of the severity of aortic pathological features. Gene ontology analysis showed that genes related to oxidation/reduction, myofibril assembly, cytoskeleton organization, and cell adhesion were differentially expressed in the mgR mice. Further analysis of differentially expressed genes identified several candidate genes whose known roles were suggestive of their involvement in the progressive destruction of aorta during MFS. This study is the first genome-wide analysis of the aortic gene expression profiles associated with the progression of MFS. Our findings provide valuable information regarding the molecular pathogenesis during MFS progression and contribute to the development of new biomarkers as well as improved therapeutic strategies.

• 지질공학
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• 제27권3호
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• pp.305-312
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• 2017

The most effective way to distinguish subsurface interfaces that produce various geophysical responses is through the integration of multiple geophysical methods, with each method detecting both a complementary and unique set of distinct physical properties relating to the subsurface. In this study, shallow seismic reflection (SSR) and ground penetrating radar (GPR) surveys were conducted at the Cheongju-Gadeok site of the Korea National Groundwater Monitoring Network to map the water table, which was measured at 12 m depth during the geophysical surveys. The water table proved to be a good target reflector in both datasets, as the abrupt transition from the overlying unsaturated weathered rock to the underlying saturated weathered rock yielded large acoustic impedance and dielectric constant contrasts. The two datasets were depth converted and integrated into a single section, with the SSR and GPR surveys conducted to ensure subsurface imaging at approximately the same wavelength. The GPR data provided detailed information on the upper ~15 m of the section, whereas the SSR data imaged structures at depths of 10-45 m. The integrated section thus captured the full depth coverage of the sandy clay, water table, weathered rock, soft rock, and hard rock structures, which correlated well with local drillcore and water table observations. Incorporation of these two geophysical datasets yielded a synthetic section that resembled a simplified aquifer model, with the best-fitting seismic velocity, dielectric constant, and porosity of the saturated weathered layer being $v_{seismic}=1000m/s$, ${\varepsilon}_r=16$, and ${\phi}=0.32$, respectively.

• 산경연구논집
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• 제9권2호
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• pp.39-45
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• 2018

Purpose - The purpose of this study is to examine the image similarity and attribute recognition of the top 10 rated spa destinations (Chungnam Deoksan, Chungnam Dogo, Busan Dongrae, Daejeon Yuseong, Chungnam Asan, Gyeongbuk Bomun, Chungbuk Suanbo, Gyeongnam Jangyu, Chungnam Onyang, & Gyeongbol Bugok) in Korea based on the visits to these spa places by the customers. Research design, data, and methodology - The survey of this study was conducted on the visitors to the top 10 spa destinations in Korea from April 8 ~ April 21, 2017, and a total of 300 questionnaires were distributed. Of them, effective questionnaires used in the final study were a total of 241. In this study, empirical analysis was made through frequency analysis, factor analysis, and multidimensional scaling ALSCAL(spinning symmetry for image similarity and rectangle for attributes recognition) by using the Statistics Package SPSS 24.0. Results - According to the analysis result of spa destination image similarity, the stress level was 0.16453 and the level of the stress was good. Moreover, the coefficient of determination (RSQ) was, which had a description of each aspect of the spa destination, 0.79908. According to the results of attribute recognition, the stress value of 0.11805 represents a degree of conformity, and the coefficient of determination(RSQ) appeared at 0.98665. Therefore, the results of this analysis are that the similarities between spa destinations and the attribute recognition of the spa destinations is a suitable model that is properly expressed in two dimensions. Conclusions - First, according to the analysis result of image similarity, Deoksan & Dogo spa revealed similar images, as well as the Dongrae and Yuseong spa, while on the contrary Asan, Bomun, Suanbo spa has different images from the rest. Second, according to the results of attribute recognition, Asan and Onyang spa has competitiveness in terms of accessibility to spa destination; Yuseong, Dongrae, Jangyu spa in terms of spa facilities, spa tourism conditions, and service & shopping conditions. while spa water quality and spa costs showed low attribute reflection for all 10 spas. Therefore, the spa visitors cannot recognize the differentiation of spa water quality and spa costs.

• 여성건강간호학회지
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• 제22권4호
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• pp.221-232
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• 2016

Purpose: The purpose of this study was to examine the applicability of a flipped learning course in Women's Health Nursing for nursing students. Methods: A total of 200 senior nursing students participated in flipped learning class of pregnancy, delivery and postpartum area, which included team-based learning and self-reflection for 8 weeks. One group pre-post test design was adopted and the changes in learning motivation and satisfaction were examined. In addition, reflective journals of the students were analyzed by making a qualitative content analysis. Results: Students showed a significant increase in score of learning motivation in the posttest (t=-4.47, p<.001). They had a mean of 3.90 in learning satisfaction out of possible five points. As a result of content analysis, three themes were selected: 'Improved attitude toward active learning', 'Burden caused by excessive workload', and 'Valuing to the team-based activity' To be specific, six sub-themes were selected, with three positive and three negative categories: 'improved class attention and understanding', 'positive class participation by preparing lessons in advance', 'peer interactions through discussion', 'A lot of time and effort consuming', 'stress caused by the burden of preparing lessons', and 'difficulties in cooperative activities'. Conclusion: This study supports and confirms that the flipped learning can be a creative instructional model of positive teaching-learning strategy in clinical nursing courses to enhance students' learning motivation.