• 제목/요약/키워드: systematic sampling

검색결과 307건 처리시간 0.025초

Freshwater Benthic Macroinvertebrate Fauna of Jindo Island, Korea

  • Park, Sung Hwan;Uy, Christine Jewel C.;Baek, Hak Myeong;Ham, Daseul;Seok, Sang Woo;Jeon, Yong Lak;Bae, Yeon Jae
    • Animal Systematics, Evolution and Diversity
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    • nspc9호
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    • pp.45-50
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    • 2016
  • Freshwater benthic macroinvertebrates were investigated from five sampling sites on Jindo Island located in the southwestern end of the Korean Peninsula. A total of 47 species (average $14{\pm}3.16$ species per site, 40 species in lotic area, and 13 species in lentic area) belonging to 38 families, 14 orders, 5 classes, and 3 phyla were sampled. Coleoptera, Diptera, Ephemeroptera, and Trichoptera were the major groups of benthic macroinvertebrates with relatively high species richness. Species diversity indices (H') and richness indices (RI) of upper streams were relatively higher than those of lower streams, which were affected by agricultural effluent from the paddy fields.

어린이집 원장의 자기 인성에 관한 인식 차이 - 기관유형, 경력을 중심으로 - (Child care Center Directors' Perception on Personality - Focusing on Types of Institutes and Teaching Experiences -)

  • 박정빈;조미영;황은희
    • 한국보육지원학회지
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    • 제14권1호
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    • pp.149-166
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    • 2018
  • Objective: The purpose of this study was to examine child care center directors' personalities in different types of institutes and teaching experiences. Methods: A cluster random sampling of 236 child care center directors in Seoul and Gyeonggi-do was taken. The participants answered a set of questionnaires measuring child care center directors' personalities. The collected data were analyzed by using descriptive statistics, t-test, ANOVA analysis, and $Scheff\acute{e}$ test. Results: The results of this study were as follows. First, national and private child care center directors' personalities were rated higher than family child care center directors' personalities. Second, child care center directors with more than of 16 years of experience were rated higher than child care center directors with 6-10 years experience in regards to personality. Conclusion/Implications: Academic and educational systematic support is needed to cultivate the personality of the child care center director, who has to perform various roles for young children, infants, parents, staff, and the community.

사회물리적재생을 통한 주거환경개선이 영구임대아파트 주민의 사회적 관계에 미치는 영향 (The Effect of Socio-Physical Regeneration on Social Network of Public Rental Residence)

  • 임의선;이연숙;김주석
    • 한국주거학회논문집
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    • 제22권1호
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    • pp.1-10
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    • 2011
  • In the 20th Century, urban regeneration was changed to holistic regeneration and Ballymun of Ireland was one of the example of leading projects which using holistic regeneration over ten years. In Deajeon, there is a successful project call as "Rainbow project", using holistic regeneration. Any previous case needs to be checked thoroughly and the result needs to be studied for next project. The purpose of this study was to delineate the effect of Socio-Physical regeneration on social network. For this research, research tool was developed to combination of previous social exclusion index. This research was a survey research which used Systematic Random Sampling. In conclusion, it was not enough time to change people's behavior dramatically but even though a change is very low, it is very meaningful. Changing from people's behavior to people's mind, is a step to a goal.

건강개념의 의미에 관한 조사연구 (A Study on Adult s Perception of Health Concept)

  • 변영순
    • 대한간호학회지
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    • 제18권2호
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    • pp.189-196
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    • 1988
  • Health, a major concept in nursing, has not yet consistent or agreed upon definition. Although effective health care depends on clear communication between health care provider and client clear definition of health would enhance the promotion of quality in health care. There are no agreed definitions or criteria for overall health. An essentialstep would seem to be to determine commonly held meaning about the concept of health. Therefore, the study was aimed at identifying the Adult's perceptions of health concept. The subject's consisting of 312 adults, who were sampled through area sampling from May 10 to May 30,1988. The instruments used for this study were Health Conception Scale, which was developed by Smith, Laffrey's revised and tested its reliability. The data was Analyzed by S.P.S.S. program and the results were as follows ; 1. The results of the reliability test for content of health concept was $\alpha$=.87. 2. The respondents perception of Health Meaning were inclined to emphasize the functional / role performance dimension rather than clinical dimension. 3. The perceptual level of health concept was proved to be significantly different by the variable : age, sex, religion, area marital status. In conclusion, adult's perception of Health Concept is revealed that functional and role performance dimension is more important than other dimensions. Futher study is necessary to clarify the structure of functional, adaptive, eudaimonistic dimension and systematic study with subculture will be and repetitive verification and modification of this tool is demanded.

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초등 실과의 서술식 평가 실태와 개선방안 (The Current Status and the Reformation Strategy on Stating a Summary of Assessments in the Practical Arts Subject)

  • 정미경
    • 한국가정과교육학회지
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    • 제13권3호
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    • pp.35-57
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    • 2001
  • The purposes of this study were to investigate the current status on stating a summary of assessments in the practical arts education and to analyze the problem and find out the reformation strategy for them. To achieve these purposes. 180 teachers working in all elementary schools located in Daegu-city was selected by systematic cluster sampling method. The data were collected by using the mailed questionnaire developed by the researcher, and there was a response rate of 91.7%. Findings showed that it was not realized the valid and reliable stating a summary of assessments because it was not fixed throughly in the elementary school. So many teachers had difficulties in assessing the practical arts subject and stating a summary of assessments. They used the computer programs of CMI(Computer Management Instruction) . Black Box. SA(Stand Along) for stating a summary of assessments. It was recommended that valid and reliable criteria of stating a summary of assessments should provided, and on-the-job training on the developing and selecting a good tools for stating a summary of assessments should required. And. it was also required that the various codes of stating a summary of assessments should developed. and the various materials. equipments. and systems should provided for teachers.

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일부 노인의 주관적 구강건강상태 및 구강건강행위가 행복감에 미치는 영향 (Effects of subjective oral health condition and oral health behavior on happiness in the elderly people)

  • 박정순;박소영
    • 한국치위생학회지
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    • 제15권3호
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    • pp.443-450
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    • 2015
  • Objectives: The purpose of the study is to identify the relationship between happiness, subjective oral health condition and oral health behavior in Korean elderly people. Methods: A self-reported questionnaire was completed by 487 elderly people using facilities for the senior citizens in Gyeonggi-do from January 3 to November 28, 2014 by convenience sampling method. The questionnaire consisted of demographic characteristics of the subjects, subjective oral health status, oral health behavior, and happiness. Cronbach'a alpha in the happiness was 0.734 in the study. Results: Happiness was closely correlated with abscence of subjective periodontal diseases, dental fillings, and denture. The number of toothbrushing and dental health education had also influenced on happiness. Conclusions: In order to improve the quality of dental health in the elderly, it is necessary to develop a multilateral systematic dental health promotion program by Ministry of Health and Welfare.

DNA Barcode Examination of Bryozoa (Class: Gymnolaemata) in Korean Seawater

  • Lee, Hyun-Jung;Kwan, Ye-Seul;Kong, So-Ra;Min, Bum-Sik;Seo, Ji-Eun;Won, Yong-Jin
    • Animal Systematics, Evolution and Diversity
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    • 제27권2호
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    • pp.159-163
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    • 2011
  • DNA barcoding of Bryozoa or "moss animals" has hardly advanced and lacks reference sequences for correct species identification. To date only a small number of cytochrome c oxidase subunit I (COI) sequences from 82 bryozoan species have been deposited in the National Center for Biotechnology Information (NCBI) GenBank and Barcode of Life Data Systems (BOLD). We here report COI data from 53 individual samples of 29 bryozoan species collected from Korean seawater. To our knowledge this is the single largest gathering of COI barcode data of bryozoans to date. The average genetic divergence was estimated as 23.3% among species of the same genus, 25% among genera of the same family, and 1.7% at intraspecific level with a few rare exceptions having a large difference, indicating a possibility of presence of cryptic species. Our data show that COI is a very appropriate marker for species identification of bryozoans, but does not provide enough phylogenetic information at higher taxonomic ranks. Greater effort involving larger taxon sampling for the barcode analyses is needed for bryozoan taxonomy.

노인공동생활주택 개별주호 특성에 대한 예비노인의 선호 분석 (The Preferences for the Physical Features of Senior Congregate Housing)

  • 유병선;홍형옥
    • 대한가정학회지
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    • 제44권2호
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    • pp.71-81
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    • 2006
  • The purpose of this study was to analyze the preferences for the physical features of senior congregate housing. The survey was conducted among middle-aged people in their fifties, who lived in Seoul, using the systematic random sampling method. The data were collected from November 3, 2003 to November 14, 2003 and the final subjects consisted of 498 respondents. Various statistical methods such as frequency, mean, cross tabulation, t-test, factor analysis, and multiple regression were used in this study. The results of this study were as follows. Firstly, most of the respondents preferred 55 to $70m^2$ sized individual units and they rarely wanted smaller units of less than $35m^2$. Individual units of one or two bedrooms were also preferred by future users. Small towns were preferred to large complex. For housing type, they preferred row houses or single detached houses to high-rise apartments. Secondly, there were no significant statistical differences between income and the preference of the physical features. From the results, we concluded that senior congregate housing should be developed not only in accordance with the users' preferences but also over a certain minimum physical quality level, regardless of the users' income.

게임소프트웨어 특성을 표현하기 위한 클래스 추출과 연관관계에 관한 연구 (A Study on Sampling and Association Relation of Class to Express Game Software Characteristics)

  • 김용식;조현훈;류성열
    • 정보처리학회논문지D
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    • 제13D권4호
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    • pp.619-624
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    • 2006
  • 현재 국내 게임시장은 급속도로 발전하고 있으나 게임제작 프로세스는 체계화 되지 못하고 있다. 또한 게임기획자와 게임개발자 간의 의사 소통의 문제점은 게임의 실패를 초래 하고 있다. 본 연구는 게임기획자와 게임개발자 간의 원활한 의사소통을 위하여 게임기획을 위한 산출물에서 게임의 특성을 표현하는 요소를 추출하여 클래스화 하고, 추출된 요소간의 관계를 나타내기 위하여 클래스의 연관관계를 제시한다. 사례 연구를 통해 추출된 클래스와 클래스간의 연관관계를 파악하여 체계적인 게임기획을 지원한다.

제주도 재학생의 아토피 피부염 유병률 추정 (Estimating the Prevalence of Atopic Dermatitis in School Students of Jejudo, Korea)

  • 배종면;신경수
    • Journal of Preventive Medicine and Public Health
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    • 제42권3호
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    • pp.171-176
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    • 2009
  • Objectives : The frequency of visiting clinics in Jejudo for treating atopic dermatitis (AD) has been reported to be higher than that for other counties of Korea. The aim of this work was to estimate the prevalence of AD for the students of the primary, middle and high schools in Jejudo, Korea. Methods : We planned to evaluate about 5,000 students, so classes were randomly selected by random systematic sampling methods. The parents of all the students in the selected classes were asked to respond to a structured questionnaire concerned with the prevalence of AD. Results : The prevalence of AD based on ever being diagnosed by a doctor, on currently being diagnosed by a doctor, on ever being treated for AD by a doctor, on currently being treated for AD by a doctor was 25.57% (95% CI=25.3-25.8), 14.67% (95% CI=14.5-14.9), 21.90% (95% CI=21.6-22.2) and 14.41% (95% CI=14.2-14.6), respectively. Conclusions : On comparing the prevalence of AD, the students in Jejudo had a higher number of recurrence events in spite of their lower number of cases. Further studies are needed to evaluate these aspects of AD.