• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.901-903
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• 2010

본 연구에서는 2007-2009년에 간호학과 및 스포츠과학부 해부학 강의에 있어 가상강의를 실시하였고 이에 따른 학생들의 가상강의 컨텐츠의 만족도와 가상강의실 활용빈도에 따른 학업성취도와의 상관관계를 분석하였다. 2007-2009학년도 1학기 해부학 강의를 가상강의 방식으로 수강한 2개 학과 231명을 대상으로 강의 종료 후 가상강의실 게시판 및 컨텐츠 활용 빈도, 개별 설문조사, 학기말 성적을 확보하여 상호간의 상관관계를 분석하였다. 각 학과별 일반 특성을 보기 위하여 연속 변수의 경우 평균과 표준오차를, 범주형 변수의 경우 그 분포 퍼센트를 이용하여 제시하였다. 학과별로 모든 학생들의 총점을 3분위수로 구분하여 낮음, 중간, 높음으로 분류하였으며, 조사된 모든 변수들의 일반 선형성을 GLM 모델을 이용하여 검증하였다. 사후 검증은 최소자승법을 이용하여 실시하였으며, 이를 이용하여 각각의 세부 집단별 점수 차이에 대한 유의성을 평가하였다. 관련 항목들 간 상관성 분석을 위하여 스피어만 상관계수를 이용하여 p 값 0.05를 기준으로 유의성 검증을 실시하였다. 모든 통계분석은 SAS 9.12 버전을 이용하여 분석하였다. 설문 대상자들은 학과와 해부학 성적에 상관없이 가상강의 전반에 대해 높은 만족도를 가졌다. 해부학 성적이 좋을수록 가상강의실 접속횟수가 유의하게 높았다. 아울러 해부학 성적이 좋을수록 난이도가 낮고 흥미도는 높게 나타났다. 또한 평가 요인들 간의 상관관계를 분석한 결과, 가상강의의 만족도는 흥미도와 전공과의 연계성과 밀접한 관련이 있었다. 가상강의 게시판을 통한 과제물 관리, 질의응답에 대한 적절성에 대해서는 성적에 따라 일부 유의한 차이가 나타났으나 높은 만족도를 나타내었다. 결론적으로 건강 및 의료 전공자들을 위한 해부학 강의에 있어 가상강의의 도입과 적용은 성공적이었으며, 이는 해부학 전공 교수진이 매우 부족한 현실에서 해부학 강의의 질적 저하를 막고 효율적인 교육을 위한 대안이 될 것으로 판단된다. 단, 해부학 가상강의 컨텐츠의 개선, 자료 보강 및 가상강의의 접근성 확보는 시급히 개선해야할 과제로 남아 있다.

• Journal of Korean Library and Information Science Society
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• v.46 no.1
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• pp.65-81
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• 2015

Altmetircs is the new method to measure social impact of research result which couldn't be found by traditional way, through measuring how much research result is reacting to social media. As academic communication has been diverse and OA repository which can preserve diverse type of article has been activated, New paradigm that measure impact of articles through multifaceted and complex way has been started. This study considers background, status of application, pros and cons about altmetircs. And by using Impactstory which is open source based tool, analyses the research output about digital library of Korea, china and japan which is published in international journal. Besides, analyses correlation between Altmetricss and citation rates. As results, "saved" shows higher than "cited" in library research analysis, it means that even though articles are not cited by followed study, there are a lot of articles that has saved in reference management tool. And positive correlation(r = 0.718) exists between "saved" and "cited", it can be inferred that Altmetricss complement the bibliometrics based evaluation system. Meanwhile, Korean researches are saved more in reference management tool than other countries.

• Korean Journal of Environmental Biology
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• v.22 no.1
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• pp.75-82
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• 2004

Surface and bottom sea water samples were harvested from the 5 stations in the marine ranching ground of Tongyeong coastal water from year 2000 to 2002. Cell number of heterotrophic bacteria was determined by using the plate counting method to explore the variation of the cell population of heterotrophic bacteria. Sea water samples collected in summer (in July and August) contained much larger number of heterotrophic bacteria than those harvested in spring, autumn and winter. Heterotrophic bacteria were usually more abundant in surface sea than in bottom sea water. However the reverse was true for sea water collected in December 2001 and February 2002 due to suspended solids accumulating more abundantly in seabed area because of the slower convective current of the sea water in winter. Number of heterotrophic bacteria did not have a strong relationship with frequency of typhoon indicating that the path and powerfulness of the typhoon, localized torrential downpour and temperature variation accompanying the typhoon should be considered all together at the same time as well as the frequency of typhoon to explain clearly the variation of cell number of heterotrophic bacteria. The dominant species isolated from the marine ranching ground of Tongyeong were identified to be Pseudomonas fluorescens, Pseudomonas stutzeri, Acinetobacter lwoffii and Sphingomonas paucimobilis.

• Journal of Korea Water Resources Association
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• v.42 no.9
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• pp.681-690
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• 2009

In this research, design precipitation was calculated by reflecting the climatic indices and its uncertainty assessment was evaluated. Climatic indices used the sea surface temperature and moisture index which observed globally. The correlation coefficients were calculated between the annual maximum precipitation and the climatic indices. and then climatic indices which have the larger correlation coefficient were selected. Therefore, the regression relationship was established by a locally weighted polynomial regression. Next, climatic indices were generated by montecarlo simulation using kernel function. Finally, the design rainfall was calculated by the locally weighted polynomial regression using generated climatic indices. At the result, the comparison of design rainfall between the reflection of the climatic indices and the frequency analysis did not indicate a significant difference. Also, this result can be used as basic data for calculation of probability precipitation to reflect climate change.

• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.141-141
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• 2011

생태적 기능이 담보되는 하안의 조성 및 복원은 필연적으로 하안공간에서 물리적 구조변화를 야기한다. 이러한 하안공간의 물리적 구조변화는 장기적으로 구간에서의 생태적 기능뿐만 아니라 단기적으로 하천의 수리특성변화를 야기한다. 이러한 수리특성변화는 복원구간에서의 생태적 기능에 직접적인 영향을 준다. 하천복잡도에 따른 수리특성의 변화는 자연형 하천복원에 영향을 주는 변수이므로 이들 변화를 예측할 수 있는 하천복잡도 시나리오의 수립은 매우 중요하다. 따라서 본 연구에서는 2차원 하상변동 수치모형인 CCHE2D 모형을 이용하여 하천유형에 따른 수리특성을 분석하고자 하였다. 하천복잡도 시나리오는 Rosgen (1994)에 의해 제안된 하천분류방법과 유량크기별 모의 시나리오를 작성하여 모델에 적용하였다. 연구대상지역은 안성천유역의 오산천과 진위천으로 하천분류결과 크게 C유형과 E 유형으로 분류되었다. 분류된 유형의 수리특성 분석을 위해 C 유형의 구간중 진위천 본류구간과 통삼천의 만곡구간을 선정하여 모형을 구동하였다. 모형의 입력자료인 유한요소망은 하천정비기본계획의 부도를 이용하여 생성하였으며 모델의 경계입력자료는 WMS HEC-1의 유출량 결과 자료를 사용하였다. 빈도별 강우량 자료를 Huff의 4분위 법을 적용하여 24시간으로 분포화하여 빈도별, 구간별 유출량 자료를 구축하여 모의 하였다. 선정한 하천유형구간에 대하여 유량크기별 수위, 유속, 한계유속, 소류력에 대한 흐름특성분석을 실시하였으며, 조도계수의 변화에 따른 흐름특성 변화를 분석하였다.

• Journal of Korean Society of Forest Science
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• v.82 no.2
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• pp.166-175
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• 1993

The genetic variation patterns at 23 loci coding for 16 isozymes in eight natural populations of Pinus densiflora for. erects distributed in Kangwon-Kyungbuk region and 17 populations of Pinus densiflora and 13 populations of Pinus thunbergii were compared. The absence of marker alleles specific to P. thunbergii and almost the same allele-frequency distributions to those of P. densiflora did not support the hypothesis that P. densiflora for. erecta is a introgressive hybrid between P. densiflora and P. thunbergii. From the results of the hierarchial analysis of population differentiation using Wright's F statistics(1978), the frequency distributions of single-locus distance coefficients and other genetic analysis (genetic distance, cluster analysis, factor analysis, resin duct analysis), it was concluded that Pinus densiflora for. erecta cannot be treated genetically as a distinct group from other natural populations of P. densiflora.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.24 no.1
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• pp.24-29
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• 1979

Intra-hill variances and coefficients of variance of culm and panicle length were increased while the avrage culm and panicle lenghts were decreased in the plot of the more planting numbers of seedlings per hill in paddy rice. The cumulative frequency of shorter culm than average lenght showed great differences between different planting numbers of seedling per hill. Verietal response of intra-hill culm and panicle length variation to different planting numbers of seedling per hill was not same and non-application of nitrogen fartilizer induced length under the more planting numbers of seedlings per hill.

• Journal of Korean Home Economics Education Association
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• v.16 no.1
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• pp.47-62
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• 2004

The purpose of this study was to investigate the relationship beteween the adolescents' perception of marital conflict and the adolescents' offensive character. The subjects of this study were 340 adolescents from 5 middle schools located in Seoul. The Adolescents' perception of marital conflict was assessed by The Adolescents' Perception of Interparental Conflict Scale developed by Grych and his colleagues(1992). The Adolescents' offensive character was assessed by Buss-Durkee Hostility Inventory by Buss and Durkee(1957). For data analyses. t-tests. one-way ANOVAS. Scheffe Tests for pairwise comparison. pearson's correlations were used. In testing all hypotheses. .05 was used as a significant level in this study. Results showed that the adolescents' perception of marital conflict was positively associated with the adolescents' offensive character. That is, the way the adolescents saw marital conflict often resulted in the adolescents' offensive character.

• Korean Journal of Plant Tissue Culture
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• v.26 no.2
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• pp.109-113
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• 1999

To elucidate the relationship between in vitro flowering and the structure of cytokinins in ginseng (Panax ginseng C.A. Meyer), zygotic embryos, seedlings, and cotyledonary nodes were cultured on MS medium supplemented with 5 $\mu$M of various cytokinins (BA, kinetin, 2-iP, and zeatin) with or without GA$_3$ (5 $\mu$M). The frequency of in vitro flowering was the highest when explants were cultured on the medium containing BA regardless of the kinds of explants, followed by kinetin, 2-iP, and zeatin. Flowering frequency of cotyledonary node explants was significantly increased by the combined treatment of cytokinin and GA$_3$. Flowering frequency was highly correlated with the logP of cytokinins, indicating that the lipophilicity of each cytokinin may involved in the in vitro flowering of ginseng.

• Journal of Korea Foresty Energy
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• v.22 no.2
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• pp.60-68
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• 2003

In forest products industry, a variety of nondestructive evaluation techniques are now being used to assess the mechanical properties of structural lumber. Ultrasonic and longitudinal vibration technique are frequently used to assess the modulus of elasticity(MOE) of lumber. The objective of this research was to evaluate the MOE and modulus of rupture(MOR) of small-diameter of Larix log(Larix kaempferi Carr.), using these techniques. In this study, 50 small-diameter logs were nondestructiveively evaluated. The dynamic modulus of elasticity(Eu) of the logs was first evaluated, using an ultrasonic method. After ultrasonic tests, the logs were measured using a longitudinal vibration technique(Ev). Static bending test was then performed on the logs to obtain the static modulus of elasticity(Es) and modulus of rupture of these logs. In general, the dynamic MOE (Ev) of logs was closely co..elated with the stati, MOE for log. Based on the results of these experiments, it can be concluded that small-diameter Larix logs can be successfully evaluated by Ultrasonic and longitudinal vibration technique. The experimental results indicated that the ultrasonic technique is effective to the log, which contains many knots. The longitudinal vibration technique is effective to the log, in which many cracks are included.