• 생명과학회지
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• 제21권9호
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• pp.1281-1287
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• 2011

왕대속은 벼과 또는 화본과에 속하는 다년생 목본성 초본이며 아시아의 인도와 중국에 많은 종이 주로 분포한다. 식물에서 속간 속내 계통관계 추론을 위해 널리 이용되고 있는 ITS 부위가 있다. 이 속에 속하는 우리나라 자생 식물 왕대 속내 네 식물종 간 계통 관계를 평가하기 위해 핵 게놈의 ITS 부위로 평가하였다. DNA 서열 배당은 많은 갭(gaps)을 가지고 있었다. 이 속 내 서열 변이는 일부 삽입과 결실이 발견되었고 속내 종간 변이는 자연도태에 의한 것으로 밝혀졌다. 이 속의 오죽과 분죽은 세 계통도(MP, ML, and NJ)에서 모두 같은 분지군을 형성하여 가장 근연관계에 있었다. 기존의 형태학적 특성과 단순 반복 서열(ISSR)의 결과와 유사한 계통 관계를 나타내어 왕대속에서 ITS의 서열이 이들 분류군에 매우 유익한 정보를 제공하고 있음을 시사하였다.

• Journal of Communications and Networks
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• 제17권2호
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• pp.126-132
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• 2015

In mobile computing research area, it is highly desirable to understand the characteristics of user movement so that the user friendly location aware services could be rendered effectively. Location based social networks (LBSNs) have flourished recently and are of great potential for movement behavior exploration and datadriven application design. While there have been some efforts on user check-in movement behavior in LBSNs, they lack comprehensive analysis of social influence on them. To this end, the social-spatial influence and social-temporal influence are analyzed synthetically in this paper based on the related information exposed in LBSNs. The check-in movement behaviors of users are found to be affected by their social friendships both from spatial and temporal dimensions. Furthermore, a probabilistic model of user mobile behavior is proposed, incorporating the comprehensive social influence model with extent personal preference model. The experimental results validate that our proposed model can improve prediction accuracy compared to the state-of-the-art social historical model considering temporal information (SHM+T), which mainly studies the temporal cyclic patterns and uses them to model user mobility, while being with affordable complexity.

• Journal of the Korean Data and Information Science Society
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• 제23권2호
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• pp.271-283
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• 2012

본 연구에서는 모든 산업을 총합한 종합주가지수 예측을 다루는 기존의 연구들과는 달리 11개의 대표 산업별 주가지수의 상승 및 하락을 예측하였다. 해외경제상황에 큰 영향을 받는 우리나라 주식 시장을 고려하여 국내 경제지표뿐만 아니라 미국, 일본, 중국, 유럽의 주요 경제지표를 예측변수로 사용하였다. 2001년부터 2011년까지 총 132개의 월별 자료에 대하여 로지스틱 회귀모형과 신경망모형에 의한 분석은 대체로 60% 내외의 정확도를 보였다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 추계학술대회 논문집(제1권)
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• pp.309-314
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• 2006

지금까지 중국의 경제 급성장에도 불구하고 중국 항만의 시설 부족으로 인해 한국은 환적화물의 증가세가 뚜렷했었다. 그러나 상해 신항만 개발과 중국항으로의 선사 직기항으로 인해 최근 환적화물의 증가세가 감소하고 있는 실정이다. 이에 따라 국내 항만개발 계획의 대폭적인 수정이 불가피한 상황이다. 특히 동북아물류중심 국가로의 추진에 큰 장애요인이 된다고 할 수 있다. 본 논문에서는 항만의 급속한 성장 단계에 있는 중국보다 일본시장을 타겟으로 하여 국내 항만과 일본항만간 O/D 및 물류 흐름상의 물류비 구조를 분석한다. 이를 통해 일본의 화물을 국내로 유치했을 때의 일본 물류비 절감효과에 대하여 분석함으로써 일본화물 유치 전략의 기초 자료로 활용할 수 있기를 기대한다.

• 한국항해항만학회지
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• 제34권5호
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• pp.355-365
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• 2010

본 연구는 항구도시 칭다오가 20세기 전반에 근대도시로 형성되는 과정에 관한 연구이다. 칭다오의 근대도시화 과정은 동아시아 항구도시의 공통점을 보여주며 강대국 등 정치적 지배 세력에 의해 4개 시기로 구분된다. 첫 번째 독일 점령기 동안에는 칭다오의 구도심 영역이 집중적으로 형성되었다. 두 번째 일본 1차 점령기 동안 칭다오의 도심 영역은 북쪽과 동쪽으로 확장되어 기존 도심의 북쪽으로 금융 및 업무시설이 형성되었고 그 북쪽에서 대항에 이르는 지역에는 공업지역이 넓게 형성되었다. 세 번째 북양군벌 및 국민당 통치기 동안 칭다오는 국제적인 상업과 금융, 휴양도시로서 급격하게 확장되었다. 네 번째 일본 2차 점령기 동안 건축 활동은 활발하지 못했으며 이 기간 동안 일본은 중국 대륙 침략의 관문으로서 칭다오를 활용하고자 했다.

• Journal of Astronomy and Space Sciences
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• 제32권1호
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• pp.63-71
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• 2015

During the reign of King Sejong (世宗, 1418-1450) in the Joseon Dynasty, there were lots of astronomical instruments, including miniaturized ones. Those instruments utilized the technical know-how acquired through building contemporary astronomical instruments previously developed in the Song(宋), Jin(金), and Yuan(元) dynasties of China. In those days, many astronomical instruments had circles, rings, and spheres carved with a scale of 365.25, 100, and 24 parts, respectively, on their circumference. These were called the celestial-circumference degree, hundred-interval (Baekgak), and 24 direction, respectively. These scales are marked by the angular distance, not by the angle. Therefore, these circles, rings, and spheres had to be optimized in size to accomodate proper scales. Assuming that the scale system is composed of integer multiples of unit length, we studied the sizes of circles by referring to old articles and investigating existing artifacts. We discovered that the star chart of Cheonsang yeolcha bunyajido was drawn with a royal standard ruler (周尺) based on the unit length of 207 mm. Interestingly, its circumference was marked by the unit scale of 3 puns per 1 du (or degree) like Honsang (a celestial globe). We also found that Hyeonju ilgu (a equatorial sundial) has a Baekgak disk on a scale of 1 pun per 1 gak (that is an interval of time similar to a quarter). This study contributes to the analysis of specifications of numerous circular elements from old Korean astronomical instruments.

• 동의생리병리학회지
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• 제17권4호
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• pp.1059-1064
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• 2003

Oldenlandiae Herba has been used for the prevention or treatment of cancer in oriental medicine for years. Experimentally its antitumor activity was reported. However, in order to develop new Korean original plants. we tried to study the antitumor activity of Chinese and Korean origin Oldenlandiae Herba. We first evaluated the cytotoxicity of Oldenlandiae Herba originated from China and Korea on HT1080, U937 and SK-mel tumor cells. MeOH extract of Chinese Oldelandiae Herba was more effective than MeOH extract of Korean Oldenlandiae Herba. Approixmately IC50 of two species of Oldelandiae Herba was 380-450 ug/ml. For evaluation of antiangiogenic activity, proliferation assay with HUVECs(Human umblical vein endothelial cells) was done with three samples. Chinese Herba and Korean Herba and root. Korean root and herba was more effective than Chinese Herba. Thus, we found Korean Oldenlandiae was more effective on angigenic activity than Chiness Oldenlandiae. In an anlytical study on effective compounds from Oldenlandiae, the spot of ursolic acid was more marked by Korean Oldenlandiae than by Chinese Oldenlandiae. whereas the spot of asperuloside was more pronounced by Chinese Oldenlandiaethan by Korean Oldenlandiae by TLC analysis.

• 한국의사학회지
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• 제28권2호
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• pp.1-13
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• 2015

Purpose : Local medicinal herb festivals present the history of the Korean medicine and cultural resources in the regions to play an important role in attracting tourists, vitalizing local economy, and improving the local image. Therefore, it is important to understand the origin of the festival and grasp historical and cultural meaning of local medicinal herb festivals. Methods : I compared the books and articles presented in the reference list. Results & Conclusions : Local medicinal herb festivals originates from traditional yangnyeongsi. Since the $17^{th}$ century, yangnyeongsi has grown up as a special market. Implementation of the Daedong Act promoted commodity and monetary economy that helped commerce and industry develop and market grow up. It also made changes in the social status system and yangnyeongsi has been such a historical phenomenon appeared in this social background. The growth of yangnyeongsi contributed to the progress in the private medicine that triggered the gradual transfer of power in the medicine to the private sector which has long been held by the government. In yangnyeongsi, there were many cultural events to attract visitors. It's the same case in China that preserves stages that were used for cultural events in the medicine market to pass down the historic sites while those in Korea are disappearing as yangnyeongsis are being pulled out of the city areas to the suburban areas due to the redevelopment projects. For this reason, restoration of the place for traditional yangnyeongsi should be taken into account through local medicinal herb festivals.

• 한국의사학회지
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• 제26권1호
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• pp.107-132
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• 2013

Objectives : This study was performed to investigate the research trends of hypertension in Traditional Chinese Medicine(TCM), and it aims to promote hypertension research in Korean Medicine. Methods : We first collected more than 1,900 papers about hypertension research, and finally selected 108 papers related to this study. They were analyzed by the annul situation, the subject of the study, the perspective of TCM, the study stream, the research fields, the diagnostic patterns, and the distinguishing treatments of TCM. Results : The first review about hypertension in TCM was performed in 1963, and the number of studies has increased since 2000s. Doctors and researchers in China tried various diagnostic patterns to treat the patient because the diagnostic patterns were not unified. For this reason, most researches were reported to the diagnostic patterns and the treatments. Also we have discovered the diversity in treatments methods such as not only the typical herbal medicine, acupuncture, and Qigong but also specific treatments like Chuna, herbal acupoints stimulation, footbath, and pillow. Conclusions : Based on the results of this study, it can be proposed as follows : First, the various approach about hypertension in Korean Medicine is required. Second, the domestic research is needed to be extended to the external treatments as the distinguishing treatments of TCM.

• 한국자원식물학회지
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• 제27권2호
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• pp.183-187
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• 2014

헛개나무(Hovenia dulcis var. koreana Nakai, Korea raisin tree)는 동아시아가 원산지이며, 식 약용 수종으로서 밀원수종으로도 가치가 증대되고 있는 수종이다. 본 연구는 헛개나무의 절접에 의한 접수의 채취시기와 연령 및 비닐하우스 설치에 따른 접목활착율의 효과를 조사하는데 목적이 있다. 헛개나무 신품종은 절접에 의한 접목 결과 클론간 유의적인 차이가 인정되지 않았다. 온대 북부 권역에서는 휴먼기인 춘분 전에 접수를 채취하는 것이 가장 적합하며, 비닐하우스를 설치하는 경우에는 86% 이상의 높은 접목 활착율을 얻을 수 있다. 접수 연령은 1년지가 가장 적합하며 접목 후 비닐터널을 설치하여 접목상을 관리하면 80% 이상의 높은 접목활착율을 얻을 수 있는 것으로 나타났다.