Miscanthus sinensis 와 타 식물과의 친근성에 관한 연구

정일구(Il Koo Lee),이호준(Ho Joon Lee),이경순(Kyung Soon Lee) 한국식물학회 1970 Journal of Plant Biology Vol.13 No.4

Althought allelopathy has been cleary established for Pinus densiflora by Lee-Monsi, the auther suspected that Miscanthus sinensis which grows vigrously in such Korean pine forests might also exhibit the phenomenon. A total of 33 species having an affinity in the Miscanthus group were recorded in the field. Out of these, five species; Patrinia scabiosaefolia, Lespedeza crytobotrya. Oenothera odorata, Raphanus sativus var. acanthiformis, and Zoysia japonica were considered the A group. Five other species which have no affinity to Miscanthus sinensis, Amaranthus patulus, Solanum nigrum, Capsella bursa-pastorris var. triangularis, Chemopodium album var. centrorubrum and Alopeculus amurensis were considered the B group. Extracts of Miscanthus sinensis were applied to determine relative germination and growth. It was found the growth in the B group was promoted by a cold water extract of Miscanthus stems and leaves, but inhibited remarkably by an extract obtained by passing cold water through Miscanthus root. As expected, growth in the A group was promoted by both experimental treatments.

물리치료(학)과 학생들의 임상실습 중 대인관계에 관한 연구

이경순,Lee, Kyung-Soon 대한물리치료과학회 2015 대한물리치료과학회지 Vol.22 No.1

Background : The purpose of this study is to provide information for making positive interpersonal relations by understanding the degree of difficulties of personal relations that physical therapy students may have on clinical practice. Methods : The study has been made based on the survey results of 10 university that completed clinical practice physical therapy students. The survey was conducted through direct contact and mail between October 1 and December 10, 2013, and analysed 291 survey sheets. Results : The results reveal that clinical instructor's attitude toward students was satisfying(71.82%). The results reveal that students felt convenient when faced with other department staffs in the hospital(70.44%). The results reveal that students didn't feel uncomfortable when they addressed themselves to patients(83.85%). The results reveal that students didn't feel uncomfortable when they were working with other college students(74.57%). Conclusions : The results of the study indicate that educators who are developing clinical practice programs and clinical practitioners should consider stressors during clinical practice and the educational implications to physical therapy students.

정적직립자세에서 노인들의 자세동요 분석

이경순,Lee, Kyung-Soon 대한물리치료과학회 2011 대한물리치료과학회지 Vol.18 No.1

Background: The purpose of this study was to assessment of posture sway on static standing in the elderly. Methods: The participants aged 60 to 90 years, were divided into age such 60s, 70s and 80s and with a history of exercise, arthritis and hang on one's stick. Posture sway were analyzed using the computerized BPM system. Each test was repeated three times. All the data were expressed means and standard deviation by using SPSS 12.0 program. Results: The posture sway test according to sex showed that mean balance, sway number and frequency performance were significantly stable in men than in women. All direction frequency, sway area, sway path and max velocity were significantly unstable in 80s than 70s and 60s. The results of the posture sway test according to exercise group, arthritis and hang on one's stick group were showed that mean balance function was significantly stable in exercise group than arthritis and stick groups. The weight was showed significant correlation by mean balance, sway no, frequency, sway area, sway path and max velocity. Sway area and max velocity were not significant correlation by frequency of lateral and left, right anterior and posterior direction. Conclusion: In this study was showed that posture sway was effected from health condition of elderly.

습관성 유산 환자의 세포유전학적인 연구

이경순,한정호,오선경,문신용,Lee, Kyung-Soon,Han, Jung-Ho,Oh, Sun-Kyung,Moon, Shin-Yong 대한생식의학회 1999 Clinical and Experimental Reproductive Medicine Vol.26 No.3

Objective: The purpose of this investigation is to determine the frequency of chromosomal or genetic causes of recurrent spontaneous abortion. Methods: A cytogenetic study was made in of 921 couples for 13 years from January 1984 to December 1997 in which the woman was ascertained to have had two or more spontaneous abortions at our Cytogenetic Laboratory, Institute of Reproductive Medicine and Population, Seoul National University. Results: The overall incidence of chromosome anomaly was 80 out of 921 (8.7%). There were 34 cases (3.69%) of reciprocal balanced translocation and 13 cases (1.41%) of Robertsonian translocation. Also 17 cases (1.85%) of inversion and 5 cases (0.54%) of X chromosome mosiacism was observed. In the case of reciprocal balanced translocation, chromosome 8,6,7,13 were preferentially involved over others. And in the case of Robertsonian translocation, chromosome 13 was preferentially involved. Conclusion: Our study demonstrates that cytogenetic analysis is indicated in couples with 2 or more spontaneous abortion and about half of these disorders are reciprocal balanced or Robertsonian translocations.

발목관절 테이핑이 고령자의 균형능력에 미치는 영향

이경순,이영빈,최익준,송하영,박주은,구현주,김부성,김영옥,하수종,김양지,권남정,이세인,Lee, Kyung-Soon,Lee, Young-Bin,Choi, Ick-Jun,Song, Ha-Young,Park, Ju-Eun,Koo, Hyun-Ju,Kim, Bu-Sung,Kim, Young-Ok,Ha, Su-Jong,Kim, Yang-Ji,Kwon, Nam-Jung 대한물리치료과학회 2012 대한물리치료과학회지 Vol.19 No.3

Background : The purpose of this study is to understand the effects of ankle joint taping on balancing abilities of the elderly and to provide preliminary data on preventing falls among the elderly. Methods : In this study, 20 students(8 male, 12 female) in their 20s from D University as well as 14 elderly(4 male, 10 female) in their 70s from S community center have participated. The participants were well informed about the experiment and voluntarily participated. We measured the difference in balancing ability before and after taping between the two groups using methods such as standing on single-leg stance, TUG, and plantar pressure. Kinesio taping, a stop-watch, and the EMED-system were used as equipment along with the SPSS 12.0 program, with a significance level of 0.05, to test the difference before and after taping between the two groups. Result : First, the 70s group showed a significant increase in the dorsal flexion angle after taping. Second, the 70s group showed a significant increase in duration time of standing on one foot after taping. Third, the 70s group's TUG time was significantly shorter. Fourth, the maximum peak value for static and dynamic plantar pressure showed a significant decrease after taping; and dynamic plantar pressure area value decreased as well within significant range. Conclusion : The study has shown that taping is effective on static dynamic balancing ability of the elderly.

무월경 환자의 세포유전학적인 연구

이경순,한정호,문신용,Lee, Kyung-Soon,Han, Jung-Ho,Moon, Shin-Yong 대한생식의학회 1999 Clinical and Experimental Reproductive Medicine Vol.26 No.3

Objectives: Cytogenetic investigations were carried out on 770 women with primary (n=560) and secondary amenorrhea (n=210) to determine the frequency of chromosomal or genetic causes of amenorrhea. Materials and Methods: In 770 women with primary amenorrhea (n=560) and secondary amenorrhea (n=210), chromosomal analysis were performed. Results: 1) The most prevalent age group is 16-20 years of age group with primary amenorrhea and 26-30 years of age group with secondary amenorrhea. 2) Out of 560 cases of primary amenorrhea, 343 cases (61.3%) had the normal chromosome constitution and 217 cases (38.7%) had the abnormal chromosome constitution including 46,XY. 3) In 217 cases of abnormal chromosome of primary amenorrhea, 57 cases (26.3%) had 45,X and 34 cases (15.8%) had the 46,XY, 24 cases (11.0%) had 45,X/46,X,i (Xq), 23 cases (10.6%) had 45,X/46,X,+mar and 14 cases (6.6%) had 45,X/46,XY. 4) Out of 210 cases of secondary amenorrhea, 181 cases (86.2%) had the normal chromosome constitution and 29 cases (13.8%) had the abnormal chromosome. 5) In 29 cases of abnormal chromosome of secondary amenorrhea, 7 cases (24.1%) had 45,X/46, X,i (Xq), 4 cases (13.8%) had 45,X/46,XX. Conclusion: High percentage of chromosomal abnormalities was diagnosed in primary amenorrhea and most of them were sex chromosome anomalies. In secondary amenorrhea, the prevalence was lower than primary amenorrhea, so a preselection of patients with secondary amenorrhea for cytogenetic investigations seems to be necessary.

중첩 클러스터를 이용한 피드백 문서의 재샘플링 기법

이경순,Lee, Kyung-Soon 한국정보처리학회 2009 정보처리학회논문지B Vol.16 No.3

대부분의 잠정적 적합피드백기법들은 질의에 대해 검색된 상위검색문서들이 적합하다고 가정하고, 그 문서들을 질의 확장을 위한 피드백 문서로 이용하고 있다. 그러나 초기검색결과에는 상당한 양의 부적합 문서를 포함하고 있는 것이 현실이다. 이 논문에서는 보다 좋은 피드백 문서를 선택하기 위해서 중첩클러스터를 이용한 피드백문서의 재샘플링 기법을 제안한다. 주요 아이디어는 질의 중심적인 초기검색문서집합에 대해서 중첩이 허용된 문서클러스터를 이용하여 문서들 사이의 관계를 반영하여 질의에 핵심역할을 하는 지배적 문서를 찾고, 이 문서들을 반복적으로 피드백 하여 질의가 내포하는 핵심 주제를 강조하는 것이다. 대규모 실험집합인 TREC GOV2와 WT10g에 대한 실험비교에서, 최근 잠정적 적합피드백 기법들 중에서 가장 좋은 성능을 보이고 있는 적합모델보다 재샘플링기법이 우수한 성능향상을 보였다. 제안기법에 대한 검증을 위해서 피드백문서에 포함된 적합문서의 정도를 나타내는 적합밀도를 측정하였다. 재샘플링 기법이 TREC 실험집합에 대해서 적합모델에 비해 높은 적합밀도를 보였고, 이 결과 적합피드백에서 검색성능을 향상시키게 되었다. 이는 제안 기법이 잠정적 적합피드백에서 유효한 방법임을 알 수 있다. Typical pseudo-relevance feedback methods assume the top-retrieved documents are relevant and use these pseudo-relevant documents to expand terms. The initial retrieval set can, however, contain a great deal of noise. In this paper, we present a cluster-based resampling method to select better pseudo-relevant documents based on the relevance model. The main idea is to use document clusters to find dominant documents for the initial retrieval set, and to repeatedly feed the documents to emphasize the core topics of a query. Experimental results on large-scale web TREC collections show significant improvements over the relevance model. For justification of the resampling approach, we examine relevance density of feedback documents. The resampling approach shows higher relevance density than the baseline relevance model on all collections, resulting in better retrieval accuracy in pseudo-relevance feedback. This result indicates that the proposed method is effective for pseudo-relevance feedback.

노인여성의 정적직립자세에서 지면반력 주파수 분석

이경순,Lee, Kyung-Soon 대한물리치료과학회 2012 대한물리치료과학회지 Vol.19 No.1

Background : The purpose of this study was to investigate the frequency domain characteristics of ground reaction forces during quiet standing on inclined surfaces twenty healthy individuals(10 elderly women $68.78{\pm}3.29$ years and 10 young women $20.90{\pm}0.74$ years) participated. Methods : Subjects stood in quiet stance over a force platform positioned in one of three different fixed positions: flat, down and up. Healthy participants completed with eyes open for 120 s trials. Evaluation of postural control were generally based on the interpretation of center of pressure(COP) time series. The COP have been determined using an experimental setup with 3D kinematic and the ground reaction force system. All the data were expressed means and standard deviation by using SAS package program. Results : SEF 50% were not significant in AP and ML direction according to surface slope of both groups. SEF 95% were showed highest frequency in AP direction on down slope of both groups. MEF were not significant all direction according to surface slopes of elderly women. There was no difference between young and elderly women. Conclusion : Elderly women used to ankle strategy during a quiet stance according to COP perturbation of AP direction showed more expanded than ML direction. SEF 95% were showed highest frequency on down slope in elderly women who showed more used ankle strategy for postural control on down slope.

한국어-영어/일본어-영어 교차언어정보검색에서 클러스터 분석을 통한 성능 향상

이경순,Lee, Kyung-Soon 한국정보처리학회 2004 정보처리학회논문지B Vol.11 No.2

This paper presents a method to implicitly resolve ambiguities using dynamic incremental clustering in Korean-to-English and Japanese-to-English cross-language information retrieval (CLIR). The main objective of this paper shows that document clusters can effectively resolve the ambiguities tremendously increased in translated queries as well as take into account the context of all the terms in a document. In the framework we propose, a query in Korean/Japanese is first translated into English by looking up bilingual dictionaries, then documents are retrieved for the translated query terms based on the vector space retrieval model or the probabilistic retrieval model. For the top-ranked retrieved documents, query-oriented document clusters are incrementally created and the weight of each retrieved document is re-calculated by using the clusters. In the experiment based on TREC test collection, our method achieved 39.41% and 36.79% improvement for translated queries without ambiguity resolution in Korean-to-English CLIR, and 17.89% and 30.46% improvements in Japanese-to-English CLIR, on the vector space retrieval and on the probabilistic retrieval, respectively. Our method achieved 12.30% improvements for all translation queries, compared with blind feedback in Korean-to-English CLIR. These results indicate that cluster analysis help to resolve ambiguity. 본 논문에서는 교차언어정보검색에서 점진적 클러스터링을 통해서 모호성을 묵시적으로 해소하는 방법을 제안한다. 연구 목적은 질의 번역에서 모호성이 크게 증가된 상태에서 문서 클러스터가 문서 문맥 역할과 모호성 해소 역할을 하는지를 보고자 하는 것이다. 제안하는 방법은 한국어/일본어 질의를 사전을 이용하여 영어로 번역을 하고, 번역된 영어 질의에 대해서 벡터공간검색모델이나 확률검색모델에 의해서 문서를 검색한다 검색된 문서의 순위대로 점진적 클러스터를 동적으로 생성하고, 이 클러스터 정보를 질의에 반영해서 문서의 순위를 다시 결정하는 것이다. TREC 테스트컬렉션을 이용한 실험에서 모호성 해소를 하지 않은 질의에 대해서, 제안한 방법은 한국어-영어 교차언어정보검색에서는 벡터공간검색모델에서 39.41%의 성능향상, 확률검색모델에서 36.79%의 성능향상을 보였다. 일-영 교차언어정보검색에서는 각각 17.59%와 30.46%의 성능향상을 보였다. 적합성 피드백 방법과의 비교에서는 모호성 해소를 하지 않은 경우 확률검색모델에서 12.30%의 성능향상을 보였다. 이를 통해, 클러스터 분석은 질의 모호성 해소에 도움을 주어서 검색성능 향상에 기여하였음을 알 수 있다.

문서분류에서 가상문서기법을 이용한 성능 향상

이경순,안동언,Lee, Kyung-Soon,An, Dong-Un 한국정보처리학회 2004 정보처리학회논문지B Vol.11 No.4

본 논문에서는 문서분류의 학습단계에 가상적합문서기법을 적용하여 성능을 향상시킬 수 있는 방법을 제안한다. 어떤 범주에 대해 적합하다고 판단된 두 개의 적합문서를 결합해서 생성된 문서 또한 적합문서가 된다는 관찰을 통해서, 문서분류기가 학습할 수 있는 새로운 정보를 추가함으로써 분류기의 학습을 돕는다. 제안하는 방법은 학습문서집합에 있는 적합문서들의 쌍을 조합해서 단순히 변환함으로써 가상의 문서를 생성한다. 이 방법에 의해서 생성된 가상 문서는 두 개의 적합문서에 같이 발생하는 어휘들에 대해서는 높은 가중치를 갖고, 문서 내의 어휘 공간이 확장되는 특성을 갖는다. 대량의 문서를 포함하는 TREC-11 필터링 태스크 참여에서 제안한 방법은 제공되는 학습문서를 이용한 기본 성능에 비해 71%의 성능 향상을 보였다. 또한 문서분류 연구에서 일반적으로 비교를 위해 이용하는 실험집합인 Routers-21578에서 학습집합의 적합문서 개수가 100개 이하인 범주에 대해서 기본 학습문서를 이용한 분류기에 비해 11%의 성능향상을 보였다. 가상문서를 계속 추가해 나가면서 성능의 변화를 분석한 결과, 가상문서의 추가는 문서분류기의 학습능력을 도와 성능이 꾸준히 향상되고 있음을 보였다. This paper proposes a virtual relevant document technique in the teaming phase for text categorization. The method uses a simple transformation of relevant documents, i.e. making virtual documents by combining document pairs in the training set. The virtual document produced by this method has the enriched term vector space, with greater weights for the terms that co-occur in two relevant documents. The experimental results showed a significant improvement over the baseline, which proves the usefulness of the proposed method: 71% improvement on TREC-11 filtering test collection and 11% improvement on Routers-21578 test set for the topics with less than 100 relevant documents in the micro average F1. The result analysis indicates that the addition of virtual relevant documents contributes to the steady improvement of the performance.