• 제목/요약/키워드: qualitative and quantitative problem

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A Study on the Quantitative Evaluation Method of Small-Scale Environmental Impact Assessment

  • Dong-Myung CHO;Ju-Yeon LEE;Woo-Taeg KWON
    • 웰빙융합연구
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    • 제6권2호
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    • pp.39-46
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    • 2023
  • Purpose: The small-scale environmental impact assessment system in Korea was introduced and implemented in August 2000, but it has a problem that it cannot guarantee implementation due to the large proportion of qualitative reduction measures for each evaluation item. Therefore, when preparing a small-scale environmental impact assessment, research was conducted on how to improve the existing simple listing-type reduction measures and qualitative evaluation standards to quantitative reduction measures and evaluation standards reflecting regional characteristics. Research design, data and methodology: The small-scale environmental impact assessment system in Korea was introduced and implemented in August 2000, but it has a problem that it cannot guarantee implementation due to the large proportion of qualitative reduction measures for each evaluation item. Therefore, when preparing a small-scale environmental impact assessment, research was conducted on how to improve the existing simple listing-type reduction measures and qualitative evaluation standards to quantitative reduction measures and evaluation standards reflecting regional characteristics. Results: As a result of the analysis of qualitative and quantitative factors, the arithmetic sum of the qualitative factors of the total six projects is 160, accounting for 80% of the total number of reduction measures, and the quantitative factors are 40, accounting for 20%. Among them, the number of qualitative reduction measures reached 97.4% for animal and plant items, and more than 90% for air quality, noise and vibration, and eco-friendly resource circulation items. Conclusions: Therefore, it is necessary to avoid establishing qualitative reduction measures and set quantitative measures as the basis, but to specify the specifications, size, and installation location related to the reduction measures, and to calculate the numerical reduction efficiency.

정성적, 정량적 문제에 대한 고등학생들의 물리 문제해결과정 분석 (Analysis of Physics Problem Solving Processes of High School Students to Qualitative and Quantitative Problems)

  • 박윤배;조윤경
    • 한국과학교육학회지
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    • 제25권4호
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    • pp.526-532
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    • 2005
  • 본 연구는 '힘과 운동'에 관한 정량적, 정성적 문제에 따른 문제해결과정을 분석하여 어떤 차이가 있는지를 알아보고자 실시되었다. 본 연구의 대상은 여자고등학교 1학년 학생 8명이었다. 이들은 문제해결에 필요한 내용지식을 보유하고 있는 학생들이었다. 선행 지식검사와 정량적 문제 3개와 정성적 문제 3개로 구성된 본검사를 사용하였다. 연구결과, 정량적 문제에서는 계획단계의 시간비율이 정성적 문제에 비해 더 높고 총 소요시간도 길게 나타났으며, 해결단계의 반복횟수도 더 많았다. 정량적 문제에서 해결에 성공하는 정도는 정성적 문제에서 별 차이가 없었고, 전략사용에도 차이가 없었다. 학생들은 평소 물리학습에서 정량적 문제를 많이 접하므로 수식과 공식을 사용하여 문제 푸는 일에 익숙해 있고, 수식과 공식에 의한 결과를 더 신뢰해서 정성적 문제를 정량적으로 해결하려는 경향이 있었으며, 정성적 문제 보다 정량적 문제를 더 선호하였다.

Applying design thinking to the educational problems: A student-centered instructional approach and practice in an undergraduate course

  • CHA, Hyunjin
    • Educational Technology International
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    • 제20권1호
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    • pp.83-107
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    • 2019
  • The aim of this study is to provide the values and descriptive implications of the Design Thinking (DT) method into the context of educational problems of practice in an undergraduate course. To achieve the research objective, both quantitative and qualitative studies were conducted. For the qualitative study, the student's productions and reflections on the experience of the application of the DT into educational problems were analyzed. For the quantitative research, one-group pre and post-test were designed to validate the effectiveness of the DT method into educational contexts in terms of creativity level to measure the student's Creativity Potential and Practiced Creativity, Academic Self-Efficacy Scale, and Problem-Solving Inventory. This study validated that the DT method had a statistically significant influence on those three competencies and also illustrated the detailed process from a qualitative viewpoint. The results and implications reflect the potential of the DT approach with the educational problem of practice, especially, in the ill-structured problem-solving contexts for student-centered instructional setting.

무게중심 복합구간에 의한 정성 추론 기법에 관한 연구 (A Study on the Methodology of Qualitative Reasoning Using Centroid-Oriented Composite Interval)

  • 박천경;김성근
    • 대한기계학회논문집
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    • 제16권7호
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    • pp.1351-1362
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    • 1992
  • 본 연구에서는 단순한 구간대신에 구간내에 제한된 형태의 가능성 분포를 갖 는 복합구간으로 학장하는 것이다. 그리고 이러한 가능성 분포는 퍼지 집합이론에서 사용되는 것처럼 일반적인 분포형태 전체를 사용하는 것이 아니라, 가능성 분포의 무 게중심만 정의하고 이 무게중심과 구간경계만을 사용하여 시스템 변수가 갖는 정성값 을 나타낸다. 이를 바탕으로 새로운 상태변화와 그 규칙을 정의함으로써 정성 모델 링과 시뮬레이션을 할 수 있는 정성 수학을 공식화하였다.이와 같은 방식으로 구한 정성 모델과 추론방법으로 기존의 논문에 나와 있는 시뮬레이션 결과와 비교하여 본 논문에서 제시한 정성해의 논리적 건전성(soundness)을 보였다.

GA와 AHP를 이용한 실내 디자인과 벽체 성능 최적화 방법에 관한 연구 (A Study on the Interior Design and Wall Performance Optimizing Method by Using GA and AHP)

  • 진경일;이경회
    • 한국실내디자인학회논문집
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    • 제29호
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    • pp.86-93
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    • 2001
  • This study presents about the method of alternatives selection by considering wall performance and interior design. Wall is selected fur the object and 3 items of cost, performance, and design as the objective function for optimizing are determined. Thus the wall performance selected problems, which are improvement of insulation performance, sweaty prevention, sound insulation performance and design selected problems, which is satisfactory Improvement of users about Interior design. It is important to select alternatives that can satisfy the performance and design on the capital given as much as possible. But quantitative problem such as performance or expanses and qualitative problem such as design are not in the same dimension. Therefore this problem is a multi-criteria optimization problem and also has used AHP method as the method to solve these. Moreover GA is used to solve a problem of the alternatives occurrence, which is the characteristic of multi-criteria problem. This study presents the solution method on multi-criteria problem that has been mix loaded of quantitative problem and qualitative problem by using AHP(Analytic Hierarchy Process) and GA(Genetic Algorithm).

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초등의 일반 학생과 과학영재 학생이 제안한 과학 탐구 문제의 유형 및 제안 과정 분석 (The Analysis on the Pattern and Proposition Process of Science Inquiry Problems Proposed by Elementary General Students and Science-Gifted Ones)

  • 이형철;전은영
    • 한국초등과학교육학회지:초등과학교육
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    • 제30권4호
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    • pp.634-645
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    • 2011
  • The purpose of this study was to investigate the analysis on the pattern and proposition process of science inquiry problems proposed by elementary school general students and science-gifted ones. The science inquiry problems were composed of one quantitative problem and one qualitative problem. To conduct this study, general students and science-gifted ones of grade 4 and 5 in elementary schools were selected. The results of this study were as follows. In both quantitative and qualitative problem, most of the students, including all the sciencegifted students and general ones, used N-IP pattern and S2 proposition process strategy to propose inquiry problems. In the relationship between proposed problem and proposition process strategy, when using S2 strategy, N-IP problems were chiefly proposed. And when using S2, S3 strategies, more patterns of inquiry problems were generated than using any other strategies. Drawing proposition processes of inquiry problem into map, science-gifted students used much more proposition process strategies than general ones.

충청북도 지속가능성 평가지표의 개발 및 적용 - 정량적 정성적 지표의 도입 - (Development and Adaption of Sustainablility Evaluation Indicators for Chungcheongbuk-Do Province - Adopting Quantitative & Qualitive Indicators -)

  • 문석기;유병득
    • 한국환경복원기술학회지
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    • 제19권1호
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    • pp.85-100
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    • 2016
  • Local Agenda 21 organizations have been founded at the most divisions of local government in Chungcheongbuk-Do, but there has been no methods to monitor the total Sustainable Development trends. For the alternative solution of that problem in the Province, this study purposed (1) to develop Indicators fit to this Province (2) to examine the availability of the developed indicators adopting to each division section. Indicators were developed and examined by fields and Quantity / Quality considerations. As a 1st step, committee-composed with field professionals each-selected and developed Quantitative Sustainable Development Indicators(SDIs) optimized to Chungbuk-Province through critical discussions proposing Qualitative Indicators as a suggestion. In 2nd step, developed Indicators were applied and tested upon each divisions. Statistic data were used to calculate indices. 3rd step is adoption stage of Qualitative Indicators which were tested with questionnaire survey analysis. As a results, SDIs for Chungcheongbuk-Do -38 Quantitative SDIs within 4 provisions of 11 items with 8 Qualitative indicators categorization be put off- is developed. With the application test, 5 Quantitative Indicators- were found to be not adaptable because of lack or none of statistic data. Among the 8 Qualitative Indicators, 3 pairs found to be similar results in each pair which needed to be integrated into one. With them, bio-species related and health related Indicators were proposed to be newly added. Nation wide Sustainability comparison between divisions and Ecological Indicator selection are another themes to be considered.

어류양식장의 입지선택을 위한 계층분석과정(AHP)모형 (AHP Model for Selecting a Fish Farm Site)

  • 이강우
    • 수산경영론집
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    • 제38권1호
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    • pp.19-45
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    • 2007
  • There have not been many studies which considered both quantitative and qualitative location factors on the issues of site selection problems for a fish farm. This study develops AHP(analytic hierarchy process) model to resolve site selection problem for a fish raising farm by using quantitative and qualitative factors. In order to evaluate the validity of the location factors found in the literature review, the study used advice from fish raising farmers and related academic experts. Four major factors have been selected as economic factors, social factors, natural environmental factors and infrastructures. An AHP structural diagram has developed by considering the factors and potential sites proposed for fish farming. Through the survey on the preference of factors and potential sites, pairwise comparison matrices have been estimated and used to calculated the relative weights of each potential site. The AHP model process shown in the study can be applied to resolve site selection problems for fish raising farmers.

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A Study on the Effectiveness of Smart Education Based on Learning Ability

  • Song, JeongBeom
    • 한국컴퓨터정보학회논문지
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    • 제21권9호
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    • pp.165-176
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    • 2016
  • This study developed the learning ability-based smart education program. The effectiveness of the developed materials was investigated using the quantitative-qualitative mixed method, and the process and results of the investigation are as follows. The quantitative investigation was conducted using the non-equivalent pretest-posttest design, in which the smart education method was applied to the experimental group, while the conventional education method was applied to the control group to analyze students' creative problem-solving potential, task concentration, and the variables required for the learning activity. The results showed significantly higher performance in the experimental group over the control group. Regarding data collection in the qualitative investigation, an analysis of the class from the instructor and class consultation logs from the class analyst were collected; the comments on the experience of each class period were collected from students. The results of the analysis of the data suggest that the perception of smart education improved for the instructor, class analyst, and learners as the course progressed.

질적 디자인 가치의 수량화(I) (A Study on the Quantification of Qualitative Attributes in Industrial Design)

  • 우흥룡
    • 디자인학연구
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    • 제2권1호
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    • pp.117-130
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    • 1989
  • Evaluation is to be seen a~ a central component of design activity. It is an attempt to ensure that the proposal which arises is accepted and that the resulting artefact itself suited to its purposes in practice. Recent surveys of Evaluation show that most methods require quantitative and explicit attributes. Always a significant part of the attributes of design proposals is qualitative. Therefore we need some study that convert qualitative attributes into quantitative scale values, because in many cases con\ulcornerclusions can be drawn about the order of the overall value of the design proposals. Following to Thurstone's psychological scaling methods, attributive values are assigned by ruting scale methods, met, hod of rank-order and method of paired comparisons. The problem of psycho\ulcornerlogical scaling is then to determine whether the stimuli can be ordered on a psychological continuum with respect to the degree of the attributes each possesses. The law of comparative judgement assumes that for a given stimulus there is associated a most frequently aroused or modal discriminal process on a psychological continuum. This paper is based upon the premise that the modal discriminul process will also be the same as the mean or median of the distribution.The objective of this paper is to argue for an acceptance of qualitative approaches to the evalua\ulcornertion of Design as a complement to the existing quantitative techniques. The scale values of 10 attri\ulcornerbutes \ulcorner(1) originality, (2) aesthetics, (3) satisfaction, (4) effeciency, (5) function, (6) size, (7) texture, (8) simplicity, (9) symbol, and (10) facility) in case of TV sets are obtained and their interactions are examined.

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