심부전증에서 Doppler Tissue Image를 이용한 비동시성 심실수축(Myocardial Dyssynchronicity)의 측정 : 심전도와비교 Comparison with EKG

구소영,조구영,한성우,최승혁,박우정,두영철,홍경순,오동진,이영 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.4

비디오 자막 추출 및 이미지 향상에 관한 연구

김소명,최영우 숙명여자대학교 자연과학연구소 2000 자연과학논문집 Vol.- No.11

본 논문에서는 효율적인 비디오 자막 이미지의 추출 및 이미지 향상을 위해서 동일한 자막 프레임들을 판단하여 다중 결합(Multiple-frama Integration)하는 방법을 제안한다. 먼저 입력된 칼라 이미지로부터 RLS(Run-Length Smearing)가 적용된 에지 이미지를 얻고, 수직 및 수평 에지 히스토그램 분포를 분석하여 자막 영역에 대한 정보를 저장한다. 프레임 내의 자막 영역의 중첩 정도를 이용하여 동일 자막을 판단하여 그룹화하고, 그룹 내 프레임들 간의 다중 결합을 수행함으로써 향상된 이미지를 얻는다. 끝으로 결합된 이미지에 대한 평가를 수행하여 잘못 결합된 이미지들로 인한 오류를 해결한다 제안한 방법을 통해서 배경으로 인한 잡영이 제거된 자막 이미지를 추출할 수 있었다. 또한, 동일한 자막의 시작 프레임과 끝 프레임의 위치 파악은 디지털 비디오의 색인 및 검색에 효과적으로 이용될 수 있을 것이다. This paper propose a new method for extracting video caption areas and their image enhancements by finding multiple frames with the same caption contents and by integrating those frames. First, we transform an input color image into a gray-level image, and obtain RLS(Run-Length Smeared) edge image horizontally and vertically. Then the caption frames and caption areas are decided by analyzing horizontal and vertical histogram distributions. The caption frames are compared each other by measuring similarity between two comparing frames to decide whether they contain the same caption contents or not. The multiple frames with the same caption contents are logically ANDed to remove background noises in the image. During this process an evaluation is performed for detecting the integrated results with different caption contents. Our proposed method can remorse most of the background noises. Also, we expect the detection results of finding the beginning and ending locations of the frames with the same caption contents are effectively used for digital video indexing and browsing.

초·중·고등학교 학생·학부모·일반교사의 보건교육 영역별 요구도와 보건교육

윤순녕,김영임,최정명,조희순,김영희,박영남,오경순,이분옥,조선녀,조소영,한선희,하영미 韓國學校保健學會 2005 韓國學校保健學會誌 Vol.18 No.1

Purpose: The purpose of this study was to identify the needs of health education in students, their parents and teachers in the elementary, middle and high schools and the current situation of health education class. Method: The subjects of this study were a total of 9450 persons including students, their parents and teachers from 279 schools throughout the country. They were selected through convenient sampling. Data were analyzed through x^(2)­test and ANOVA. Result: Students, their parents and teachers replied that 18 dimensions of health education class (DHEC) are necessary. The four DHEC - healthier life style, sex education, mental health and safety education - showed high educational needs in students, their parents, and teacher. High school students had higher educational need of 'symptom management for daily living' than elementary and middle school students. Students, their parents and teachers in elementary school had higher educational needs of 17 DHEC that those in middle and high school. The percentages of schools with health education class taught by health teachers were 99.2%, 75.5% and 66.0% respectively in elementary, middle and high schools. Health education was given mainly using physical education classes at elementary schools, and creative class hours at middle and high schools. In general, health education took 1-3 hours per week at elementary schools, and less than an hour at middle and high schools. Conclusion: Therefore, based on the results, systematic health education class should begin from elementary school to meet the need of health education in students, their parents and teachers, and further study should be made on the number of hours required and the amount of contents of 18 DHEC.

초·중·고등학교 학생, 학부모, 일반교사의 보건교육 요구

윤순녕,김영임,최정명,조희순,김영희,박영남,오경순,이분옥,조선녀,조소영,한선희,하영미 韓國學校保健學會 2004 韓國學校保健學會誌 Vol.17 No.2

Purpose : The purpose of this study was to identify needs of health education of the students, parents, general teachers, and health teacher of the elementary, middle, and high schools. Method : 279 schools of elementary, middle, and high school were sampled nonproportionally during the period from June 28 to July 26, 2004 . The data were collected by the questionnaire from 1,888 students, 1,876 parents, 1,695 general teachers, 279 health teachers. A frequency, % and χ2-test were used to analysis by SAS program. Result : 1. It showed that 98.1% of elementary school students, 92.3% of middle school students, 89.6% of high school students answered that they need health education. The most of students, parents, and general teachers had high interests in health education. 2. In the case of students, main causes of needs of health education was 'to prevent diseases or accidents''. But parents answered that it was 'to build up a healthier behavior'. General teachers answered that it was 'more effective systematic and continuous health education'. 3. Over 80% of students, parents, and general teachers about the question of who qualified person is to teach health education as a regular class responded that health teacher is available. Especially 93% of elementary school students answered like that. 4. The most of students, parents, and general teachers answered that health education in the classroom is favorable 1 to 2 hours per week. Conclusion : As results of the study , the majority of students, parents, general teachers agreed needs of health education. Therefore, on the basis of this study, systematic and continuous health education is necessary. Additionally the establishment of independent health subject is required certainly.

컴퓨터 작업 시 의자 등받이 위치가 근육 활성도에 미치는 영향

김민우,변승진,이경은,정소영,조주영,최원자,최찬양,김경 대구대학교 특수교육재활과학연구소 2011 再活科學硏究 Vol.29 No.1

이 연구는 컴퓨터 작업시 의자 등받이 위치가 근육활성도에 미치는 영향을 알아보기 위해 36명의 근골격에 문제가 없는 성인 남녀가 참가하였으며 대상자들은 등받이가 뒤에 있는 의자와 등받이가 없는 의자, 등받이가 앞에 있는 우리들 의자를 무작위로 배정하고 동일한 컴퓨터 작업을 실시하게 하였다. 실험 중, 표면근전도기를 사용하여 의자에 따른 위등세모근, 머리널판근 그리고 척주세움근의 근활성도 변화를 측정하였다. 이 연구의 결과를 종합해보면 등받이가 앞에 있는 의자는 허리 근육의 부담을 줄이지만 목근육에 부담이 늘어나고 등받이가 뒤에 있는 의자와 없는 의자는 허리근육에는 다소 무리가 가지만 목근육에는 부담이 덜하다는 것을 알 수 있었다. 이러한 결과로 환자의 증상에 다라 컴퓨터 작업을 하는 동안 의자 등받이의 위치를 조절하여 치료에 도움이 될 수 있다고 생각되어진다. Objective : In this study, we checked and observed people's change of body muscle and muscle activity who do computer work on different chairs. We set three kind of chairs which one is a stool and another one is the back is fixed, and the other one is the back is fixed in front of chair. Subject : Accounting for 36 health men and women, we divided these people to 3 groups and put them on the three cases(position 1, position 2, position 3). We measured muscle activity of upper trapezius, Splenius Cervics, Erector Spinae from the groups by using surface electromyogram system. Methods : The standard of the electromyogram was 'reference voluntary contraction', and we carried out 'one way anova' to compare muscle activity of three groups. Results : In position 1, reference voluntary contraction of upper trapezius muscle activity was 123.2821%, Splenius Cervics was 141.7526%, and Erector Spinae was 254.5233%. In position 2, reference voluntary contraction of upper trapezius muscle activity was 132.9395%, Splenius Cervics was 141.7526%, and Erector Spinae was 246.6540%. In position 3, reference voluntary contraction of upper trapezius muscle activity was 190.6487%, Splenius Cervics was 270.2332%, and Erector Spinae was 182.1021%. Both upper trapezius and Splenius Cervics muscle activity of position 3 group was higher than the others groups. In position 1 group, Erector Spinae muscle activity was hight than the other groups. And either was position 2 group's(p<0.05). Conclusion : Therefore the chair which is the back is fixed in front is more comfortable for waist muscle but it's not good for neck. And the other chairs are better in waist muscle but not in neck muscle. So far, when we do a computer work, it's prefer to sit on the group 1&2's chairs to reduce neck muscle's stress and sit on group 3's chair to reduce waist muscle's stress.

A Gene Delivery Material: Recombinant Mussel Adhesive Protein

So Yeong BAHN,Yoo Seong CHOI,Bong-Hyuk CHOI,Bum Jin KIM,Hyung Joon CHA 한국생물공학회 2010 한국생물공학회 학술대회 Vol.2010 No.10

Characteristics of Flexural Behavior of Reinforced Concrete Member Substituted Heavyweight Waste Glass as Fine Aggregate

Choi, So Yeong,Kim, San,Yang, Eun Ik Trans Tech Publications, Ltd. 2018 Materials science forum Vol.940 No.-

<P>The progress of civilization has been led to the increase of industrial products, the amount of waste is increasing, and its disposal has become a problem. And, the huge amount of expended concrete has led to the dissipation of natural aggregate. To deal with these problems, many researches have been executed to use a variety of industrial waste as aggregate in concrete materials. So, in this paper, the flexural behavior with substitution ratio of heavyweight waste glass were compared and evaluated in reinforced concrete members. From the results, initial cracking load, yielding load and flexural rigidity less affected by substitution ratio of heavyweight waste glass. However, the ductility of the RC member was significantly affected when all of the fine aggregate is replaced by the heavyweight waste glass.</P>

Characteristics of volume change and heavy metal leaching in mortar specimens recycled heavyweight waste glass as fine aggregate

Choi, So Yeong,Choi, Yoon Suk,Yang, Eun Ik Elsevier 2018 Construction and Building Materials Vol.165 No.-

<P><B>Abstract</B></P> <P>Industrial waste, such as heavyweight waste glass, has become a global concern in terms of environmental safety and resource recycling. The reuse and recycling of heavyweight waste glass are necessary from the viewpoint of environmental protection. At the same time, concrete, three-quarters of which consists of aggregate, is one of the most widely used infrastructure materials, and it is being exhausted. The heavyweight waste glass being is considered as the most suitable substitute for aggregate due to its physical characteristics and chemical composition.</P> <P>In this study, to evaluate whether heavyweight waste glass could be as a concrete material, we carried out drying shrinkage, expansion by alkali-silica reaction (ASR) and heavy metal leaching of mortar. We found that when the heavyweight waste glass substitution ratio increased, the drying shrinkage decreased. Furthermore, the existing models predicted the experimental results, inversely. However, the expansion of ASR mortar gradually increased with an increase in the substitution ratio of heavyweight waste glass. When fly ash 20% or blast furnace slag 50% was mixed in mortar specimens, the ASR expansion could be controlled within the permitted limit of 0.1% at 14 days by the ASTM 1260 criteria. Moreover, the leached concentration of As, Cd, Cu and Hg from the mortar were detected below the criteria specified in drinking water regulatory levels, however, further investigation is needed to determine the leaching characteristics of Pb and Cr according to heavyweight waste glass substitution ratio in mortar specimens. Conclusively, the overall test results of this study have demonstrated that it may be feasible to utilize heavyweight waste glass as fine aggregate in mortar specimens.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The mortar specimens containing heavyweight waste glass were investigated. </LI> <LI> Drying shrinkage decreased with the increase of heavyweight waste glass. </LI> <LI> ASR expansion and heavy metal leaching quantities increased with the content of waste glass. </LI> <LI> The heavyweight waste glass substitution has a significant effect on the properties mortar specimens. </LI> <LI> Results are expected to provide a motivation to use heavyweight waste glass in mortar. </LI> </UL> </P>

Preparation and Quality Analysis of Fish Paste Containing Styela clava Tunic

So-Yeon Choi,Eun-Yeong Choi,Kyung-Eun Lee,Ae-Sun Song,So-Hyeon Park,You-Jin Jeon,Seung-Cheol Lee 한국식품영양과학회 2012 한국식품영양과학회 학술대회발표집 Vol.2012 No.10

유색칼라 생육 및 구근 비대에 미치는 비가림 재배와 구근 크기의 효과

Choi So Ra(최소라),Hoi Chun Lim(임회춘),Dong Chil Choi(최동칠),Joung Sik Choi(최정식),Jung Ryu(류정),Yeong Geun Choi(최영근),Jong Sun Eun(은종선) (사)한국생물환경조절학회 2002 생물환경조절학회지 Vol.11 No.4