• 제목/요약/키워드: qualitative test

검색결과 886건 처리시간 0.027초

정성적 추론을 이용한 자동차 충돌 사고 재구성의 검증 (Verification of Automobile Collision Accident Reconstruction Using Qualitative Reasoning)

  • 김현경;명한나;한인환
    • 인지과학
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    • 제10권4호
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    • pp.63-70
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    • 1999
  • 자동차 충돌 사고 재구성이란 사고 상황으로부터 가능한 모든 정보를 수집, 분석하여 충돌로 인한 사고 거동 및 원인을 규명하는 작업이다. 본 논문에서는 자동차 사고 재구성에 직접 적용이 가능하도록 개발된 충돌 재구성 시스템을 소개하고자 한다. 본 시스템은 정량적 충돌 재구성 시스템과 정성 적 충돌 추론 시스템을 통합하여, 상호 보완적 역할을 통해 기존의 단일 시스템이 갖는 제한점들을 극복할 수 있었다. 통합된 시스템은 충돌로 인한 거동에 대한 정확한 예측과 아울러 정성 적 충돌 거동 묘사를 제공한다. 강체 동역 학 이론에 기초한 충돌 역 해석 과정 시 정성 적 시뮬레이션을 통해 잘못된 가설을 검증하여, 모순되는 가설을 초기 단계에서 찾아낼 수 있게 하였다. 또한 이 과정에서 인과 관계에 근거한 정성 적 설명을 제공함으로써, 수치 모델에 의해 예측된 결과의 이해를 도울 수 있었다. 본 시스템은 자동차 충돌 사고의 충돌에 적용되어 유효성을 입증할 수 있었다.

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Comparison between Siderophores Production by Fungi Isolated from Heavy Metals Polluted and Rhizosphere Soils

  • Hussein, Khalid A.;Joo, Jin Ho
    • 한국토양비료학회지
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    • 제45권5호
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    • pp.798-804
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    • 2012
  • Although siderophores are induced primarily in response to iron deficiency, soil and other ecological factors can affect on this process. This study was to evaluate the production of siderophores by different fungal species isolated from heavy metal contaminated and uncontaminated soils. More than thirty fungal strains were isolated from heavy metal contaminated and rhizosphere uncontaminated soils. Chrome azurol sulfonate (CAS) was used for both quantitative and qualitative evaluation of siderophores production. No significant correlations were observed between the tested variables such as ultraviolet (UV) irradiation method and CAS-agar plate and heavy metal concentration in both soils. The production of siderophores in rhizosphere fungi was higher than those isolated from the contaminated soil; however, the difference was not significant. The siderophore production (%) by fungi isolated from heavy metal contaminated soil using UV irradiation method was positively correlated with the qualitative values using CAS-plate method (P<0.05). Pearson correlation test indicated a positive correlation between the quantitative and qualitative methods of detection for fungi isolated from rhizosphere and also those isolated from heavy metal contaminated soil.

구조방정식을 이용한 웹사이트의 인간공학적 평가 방법에 관한 연구 (A Study on the Website Evaluation Method Using the SEM)

  • 최재호;백인기
    • 대한인간공학회지
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    • 제22권2호
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    • pp.45-56
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    • 2003
  • The purpose of this study is to develop the model including multiple causal relationship between factors to evaluate overall user satisfaction and develop an objective method to quantify the impacts and scores of each qualitative factors on overall user satisfaction using Structural Equation Model(SEM) and also test the feasibility to construct a comprehensive website evaluation model including qualitative and quantitative factors. The SEM model used 2 qualitative factors of usability and esthetic factors for the evaluation factors of user satisfaction and select 4 attributes of each factors using factor analysis. 3 shopping mall sites were evaluated to construct the SEM model, and 155 subjects participated the website evaluation using the walk-through and face-to-face survey method. Analysis results showed that the SEM model was statistically significant for all the 3 websites evaluated. Both the usability and esthetic factors showed significant effects to user satisfaction of websites and have positive correlation. The user satisfaction was more effected by the usability factor than esthetic factors, and the simplification and harmonization were the most critical attributes of the usability and esthetic factors.

단서분석(端緖分析)을 통(通)한 패션트렌드 연구(硏究) II (Research of Fashion Trend through Analysis on Cue II)

  • 이영재
    • 패션비즈니스
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    • 제6권2호
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    • pp.67-76
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    • 2002
  • This research examines the characteristic trends through analysis on cue in the contemporary fashion distinctly and systematically. It is carried out by both qualitative analysis and quantitative analysis. In the qualitative analysis, the four important street fashions of neo-mods/jazz, neo-hippie/grunge, sportivecasual and technos/cyber-punk are grouped. In the quantitative analysis, statistical data are sampled from Collection II of the 1990s S/S. It takes frequency, percentage, $\chi^2$-test and etc. by using the comprehensive tools for statistical treatment. There were significant differences between the S/S fashion. According to the cues, there are also significant differences between the fashion in the 1990s. In 'Neo-Mos/Jazz' style shows highly androgynous look, deep and strong tone, green/blue colors, natural fabric, stripe pattern, long hair style, and hided make-up. 'Neo-hippie/gnenge' style shows highly folklore look, vivid tone purple colors, seethrough/knit fabric, natural /traditional pattern, decorative hair special makeup. 'Sportive casuals' style shows highly sportive look, greish tone, white/grey colours, natural fabric, solid patten, bobbed hair, and natural make-up. 'Techno/cyber punk style shows highly comocorps look, pale tone black colors avangard fabric, solid patten, punk/dyed hair special make-up.

영상에서 선형순위검정법을 이용한 에지검출 비교 (Comparison of Edge Detection using Linear Rank Tests in Images)

  • 임동훈
    • 한국컴퓨터정보학회논문지
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    • 제10권6호
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    • pp.17-26
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    • 2005
  • 본 논문에서는 통계학의 선형순위통계량(linear rank statistics)에 기초한 3가지 비모수 검정법 즉. Wilcoxon 검정법, Median 검정법 그리고 Van der Waerden 검정법을 이용하여 에지를 검출하고자 한다. 5$\times$5 윈도우상에서 중심픽셀의 에지여부는 에지-높이 모수(edge-height parameter)를 사용한 모형 하에서 두 영역간의 유의한 차이가 있는지를 검정함으로서 결정한다. 영상실험에서 통계적 방법들 간의 에지검출 성능은 에지맵(edge map)을 통한 정성적인 비교와 객관적인 척도 하에서 정량적인 비교를 통하여 분석하였다.

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성인 약물남용 재활 프로그램의 효과성 연구 (A Study on effectiveness of the relapse prevention program for adult substances abusers)

  • 장진경
    • 가정과삶의질연구
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    • 제19권1호
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    • pp.33-52
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    • 2001
  • The purpose of this study was to examine the effectiveness of using the relapse prevention program for adult substance addicts. Based on the results from the study of educational needs for the relapse prevention program among substance addicts the 10-session-relapse prevention program was developed. Then the researcher conducted the relapse prevention program for 15 adult methamphetamine addicts from Aug. 3 1999 to Sep. 4 1999 at the probation office in Suwon, South Korea. For examining the effectiveness of using that relapse prevention program the Social Adjustment Scale-Self Report(SAS-SR), McMullin Addiction Thought Scale(MAT), and Self Esteem Rating Scale(SERS) were used whether or not their social adjustment level, self-esteem level, and addiction thought level were improved. This study employed one group pre-post test research design as a quantitative purpose and in-depth interview as a qualitative purpose. For a qualitative purpose in-depth interview was conducted in not only between sessions but also after sessions dealing with their current life problems. For a quantitative purpose the analysis strategy employed here was frequency and t-test. Results shows that addicts who took the relapse prevention program consistently reported the improvement of their social adjustment level, self-esteem level, and addiction thought level although there were no statistically significant between pre and post tests. The implication of study findings will be discussed.

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산후 유방 마사지 손기술에 대한 다중사례분석 (Multiple-Case Studies of Hand-on Breast Massage Techniques used by Breastfeeding Experts)

  • 박현순;조인숙;김민경
    • 여성건강간호학회지
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    • 제23권3호
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    • pp.155-165
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    • 2017
  • Purpose: The aim of this study was to understand the hand-on breast massage techniques used by well-known experts in breastfeeding clinics. Methods: A qualitative multiple-case design was applied that involved a feasibility test. Four experts sampling qualitative data collected by observing participants and in individual interviews were analyzed by content analysis, linking data to the propositions, and cross-case pattern matching. This study explored differences within and between cases, and the possibilities of replicating findings across cases. Thirty-nine postpartum women participated voluntarily in the feasibility test, which investigated the usability of four massage techniques. Results: The four techniques showed considerable similarities in terms of the application of stimulation to the breast base and increased flexibility of the wired flexible body, which was the core mechanism underlying the techniques. The breast management strategies were consistent with existing practice guidelines with the exception of using cold cabbage to control engorgement pain. There was insufficient scientific evidence for supporting the massage techniques used by the experts. All of the techniques showed 100% education completeness, but application rates were higher for self-control-oriented techniques. Conclusion: The massage techniques applied by experts in breastfeeding were based on hypotheses and self-control techniques are feasible to apply in practice.

백년초의 첨가비율을 달리한 백년초떡의 품질 특성 (Qualitative Characteristics of Beaknyunchodduk with Various Percentages of Beaknyuncho)

  • 김기쁨;최수근;신민자
    • 한국조리학회지
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    • 제13권3호
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    • pp.105-114
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    • 2007
  • This study was aimed at evaluating a proper mixing ratio of making Beaknyuncho(Opuntia ficus-indica var. saboten) Sulgidduk with different types of extraction, a fruit and a stem of Beaknyuncho, and by different making methods. As a result, moisture content was the highest(43.22%) in FP1 and the lowest(38.55%) in SJ60. The low lightness and yellowness are increased with more powder and juice of both fruit and stem added. The mechanical characteristics, hardness, adhesiveness and gumminess were increased as powder and juice were added. And cohesiveness and springiness were decreased. The identification test showed that a sample containing stem juice was the most preferable for taste, chewiness, moistness and after-taste. The preference test showed that a sample containing stem juice was the most preferable for color, texture and overall quality and a sample containing stem powder was preferable for flavor and taste. Both SJ60 mixed with 60% Beaknyuncho stem juice and FP3 mixed with 3% fruit powder proved to be the most desirable in both sensory evaluation and texture characteristics.

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최근 3년간 성인간호학회지 게재 논문의 내용과 경향 분석 (2004-2006년) (The trends of Nursing Research in the Journal of Korean Academy of Adult Nursing)

  • 박연환;이영휘;김옥수;조명옥
    • 성인간호학회지
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    • 제20권1호
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    • pp.176-186
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    • 2008
  • Purpose: The purpose of this study was to analyze the published articles in the Journal of Korean Academy of Adult Nursing from 2004 through 2006. Methods: Two hundreds and ten articles were analyzed focusing on research methodology and key words using descriptive statistics. Results: The proportion of quantitative research was 88.1%, while the proportion of qualitative research was 5.2%. The majority of the qualitative research design was survey(67.1%). Seventy-four percent of the research had verbal consent and 8% had written consent from the participants. Eight percent of the research provided conceptual framework. The prevailing data collection settings were hospitals(50.5%) and community(37.1%). For the data analysis, 95% used parametric analysis methods; descriptive statistics(26.2%), chi-square test(18.3%), t-test(18%) and ANOVA(17.4%). Key words were categorized into four nursing domain: human, health, nursing, and environment. The most frequently used domain was health. Conclusion: The number of the published articles in the Journal of Korean Academy of Adult Nursing has been increased and quality has been improved compared with the articles published before the 2000 year. Varied research methodology and data analysis methods were utilized.

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조현병 환자의 내재화된 낙인 감소를 위한 인지행동 프로그램 개발 및 효과검증 (Development and Effects of a Cognitive-behavioral Therapy Based Program in Reducing Internalized Stigma in Patients with Schizophrenia)

  • 김미영;전성숙
    • 대한간호학회지
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    • 제46권3호
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    • pp.349-363
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    • 2016
  • Purpose: This study was done to develop a internalized stigma reducing program based on cognitive-behavioral therapy and appropriate for patients with schizophrenia and to evaluate its effectiveness. Methods: The study design was a mixed method research. Qualitative study, 13 patients with schizophrenia who had experience in overcoming stigma were purposively chosen for interviews and data were analyzed using Giorgi method. Quantitative study, 64 patients with schizophrenia (experimental group =32, control group =32) were recruited. The cognitive-behavioral therapy-based program for reducing internalized stigma in patients with schizophrenia was provided for 8 weeks (12 sessions). Data were collected from June. 20, 2013 to Feb. 14, 2014. Quantitative data were analyzed using ${\chi}^2-test$, t-test, repeated measures ANOVA with the SPSS program. Results: Qualitative results, from the experience of coping with stigma in patients with schizophrenia seventeen themes and five themes-clusters were drawn up. Quantitative results showed that internalized stigma, self-esteem, mental health recovery and quality of life were significantly better in the experimental group compared to the control group. Conclusion: Study findings indicate that this program for reducing internalized stigma in patients with schizophrenia is effective and can be recommended as a rehabilitation program intervention to help patients with schizophrenia to cope with internalized stigma.