• 제목/요약/키워드: item classification framework

검색결과 6건 처리시간 0.026초

항만시설의 생애주기 업무 지원을 위한 BIM 표준 프레임워크 구축 (A Standardized BIM Framework for Supporting Life-cycle Business Process for Port & Harbour Facilities)

  • 문현석;원지선;신재영
    • 한국BIM학회 논문집
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    • 제8권4호
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    • pp.49-59
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    • 2018
  • Recently, the application of BIM for port & harbour facilities has been increasing, as it is widely applied to the infrastructure field both at domestic and abroad. However, the port and harbour projects still have very poor facilities information management system and the application level of BIM is very low compared to other facilities. Even if BIM is applied for those project, it is very difficult to determine in advance what information is needed without an accurate understanding of the business process. The purpose of this study is to develop a BIM framework for port & harbour facilities and to examine its applicability. To do this, we structured the classification of the port & harbour facilities and constructed object-based classification system based on ISO12006-3 standard. We also derived the BIM framework requirements from the viewpoint of process, standard, interface, and information, and confirmed the linkage of the BIM object classification system in the framework item. The applicability of the BIM framework for inspection process cases of port & harbour was examined. Accordingly, this study can solve requirement setting method, which is the non - procedural and non - systematic project information, in the BIM application process of the port & harbour project with the BIM framework. In addition, the framework is expected to be integrated into the system to play a key role in the selection of project objectives, and the ability to clearly identify the information requirements required by the BIM manager to perform the project.

한국 지구과학 올림피아드 문항 분석을 통한 문항의 질 향상 방안 (Analysis of Korea Earth Science Olympiad Items for the Enhancement of Item Quality)

  • 이기영;김찬종
    • 한국지구과학회지
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    • 제26권6호
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    • pp.511-523
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    • 2005
  • 본 연구에서는 한국 지구과학 올림피아드 문항의 질 향상 방안을 모색하고자 1회와 2회 예선 및 본선 문항을 다양한 측면에서 분석하였다. 문항 분석을 위해 내적 및 외적 문항 분류틀을 구안하여 적용하였다. 고전 검사이론을 적용하여 문항의 난이도와 변별도, 상관계수, 그리고 신뢰도를, 일반화가능도 이론을 적용하여 일반화가능 도를 각각 추정하였다. 문항 분류틀 적용 결과는 다음과 같다: (1) 내용 차원에서는 지질 영역과 천문 영역에, 지식 및 탐구과정 차원에서는 자료 분석 및 해석에 집중되는 경향을 보였다. 또한 맥락 차원에서는 거의 대부분의 문항이 교과서적인 상황을 토대로 한 것이었다. (2) 요구 사고 수준에서 예선과 본선간의 차이를 발견할 수 없었다. (3) 문항 표현 범주에서는 그림의 사용 비율이 가장 높았고, 문항 유형 범주에서는 예선은 선다형과 단답형의 비율이, 본선은 서술형의 비율이 높았다. 또한 문항 형식 범주에서는 중학부와 예선은 단독형의 비율이 높고, 고교부와 본선은 복합형의 비율이 높았다. 문항을 분석한 결과는 다음과 같다: (1) 중학부는 대체로 난이도가 낮고, 변별도는 적절하였다. 그러나 고교부는 일반고와 과학고간에 상당한 차이가 있었다. (2) 중학부는 대기 영역과 총점과의 상관이, 고교부는 천문 영역과 총점과의 상관이 가장 높았다. (3) 양호한 문항이 가장 많은 일반고부의 문항 내적 일관성신뢰도와 일반화가능도가 가장 높았다. (4) 일반 고는 출제된 문항 수로 적정 수준의 일반화가능 도에 도달되나, 중학부나 과학고는 출제된 문항보다 2배 이상 많은 문항수가 필요한 것으로 나타났다.

빈발단어집합을 이용한 NaiveBayes의 정확도 개선 (An Improvement of Accuracy for NaiveBayes by Using Large Word Sets)

  • 이재문
    • 인터넷정보학회논문지
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    • 제7권3호
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    • pp.169-178
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    • 2006
  • 본 논문은 연관규칙탐사 기술에서 사용되는 빈발항목집합을 변형하여 문서분류의 문서에서 빈발단어집합을 정의하고, 이를 사용하여 문서분류 방법으로 잘 알려진 NaiveBayes에 적용하여 이 방법의 정확도를 개선한다. 이 기술의 적용을 위하여 하나의 문서는 여러 개의 문단으로 나뉘어졌으며, 각 문단에 나타나는 단어들의 집합을 트랜잭션화하여 빈발단어 집합을 찾을 수 있도록 하였다. 제안한 방법은 Al::Categorizer 프레임워크에서 구현되었으며 로이터-21578 데이터를 사용하여 그 정확도가 측정되었다. 문단에서의 라인수와 학습문서의 크기를 변화하면서 정확도를 측정하였다. 측정된 결과로부터 제안된 방법이 기존의 방법에 비하여 정확도를 개선한다는 사실을 알 수 있었다.

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소비자관점의 패션브랜드 분류 기준에 관한 연구 (A Study on Criteria for Classifying Fashion Brands from the Viewpoint of Consumer)

  • 박송애
    • 한국의상디자인학회지
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    • 제11권3호
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    • pp.87-99
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    • 2009
  • The purpose of this study was to find out criteria for classifying fashion brand from the consumer point of view. This was compared with the viewpoint of fashion business practice in order to develop strategy of fashion brands and to manage brand effectively and systematically, and to suggest theoretical frame for application of these criteria. This study was researched as the succeeding study of a model of criteria for classifying fashion brands from the viewpoint of fashion business practice. Survey was used as a research method. The subjects were 422 women who were 20-30 years old and living in and near Seoul. Questionnaires were developed based on 37 fashion brands' classification criteria by means of pre-survey, and SPSS package and LISREL program were used to analyze the data. As a result of factor analysis considering 37 classification criteria, 8 factors were identified as classification criteria. They were as follows; the level of brand form, the level of product concept, the level of management item, the level of brand sales ability, the level of customer management, the level of brand advertising and awareness, the level of brand value, and the level of product lead ability. All of criteria were correlated to each other. The effective method to classify fashion brands was proposed by establishing the model of the relationship of the values of 7 criteria and by proving it with the structure equation model analysis. The model of criteria for classifying fashion brands that was suggested on this study was proved by the structure equation model analysis. In this study, from a consumer's point of view we suggested a theoretical framework describing which criteria would be selected to classify and utilize fashion brand market. This model can be used to select the most efficient classification criteria and classify them hierarchically instead of selecting only one among some factors that complex and interactional and classifying.

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물리치료사의 관점에서 뇌성마비 아동과 청소년을 위한 ICF-Core Set을 기반으로 한 접근법의 효과: 단일 사례 연구 (An ICF-Core Sets for Children and Youth With Cerebral Palsy Based Approach From a Physical Therapist Perspective: A Single Case Study)

  • 김정희;김태호
    • 한국전문물리치료학회지
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    • 제23권1호
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    • pp.55-64
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    • 2016
  • Background: The International Classification of Functioning, Disability, and Health-core set (ICF-core set) for children and youth (CY) with cerebral palsy (CP) provides a useful conceptual framework and a guide for health care planning and measuring the changes brought by interventions across a multitude of dimensions from body functions to personal activities, social participation, and environmental factors for them. Objects: This single case study was reported to illustrate the use of a goal directed approach in applying the ICF-core set for CY with CP from a physical therapist perspective. Methods: An eleven year old boy with spastic CP, Gross Motor Function Classification System (GMFCS) level V, and his mother participated in an evaluation of his functioning state. The intervention goal was set through an interview using the ICF-core set, Canadian Occupational Performance Measure (COPM) and Goal Attainment Scale (GAS). Physical therapy was carried out on an outpatient basis using a goal directed approach for 30 min, 1 time/week during 12 weeks and the boy's gross motor function was assessed using the Gross Motor Function Measure (GMFM)-66 version (item set 2) before and after the intervention. Results: As measured by the boy's mother, the COPM score showed a meaningful clinical change (performance=mean 3.5, satisfaction=mean 2.5) and the T-score of GAS changed 34.4 after the goal directed approach. The GMFM-66 (item set 2) score changed from 31.8 to 38.7 and evaluation using the ICF-core set displayed improvement in 6 items of activity level between before and after the intervention. Conclusion: The ICF-core set for CY with CP is useful for understanding the overall functioning of CY with this condition and provides an opportunity to share and integrate information and opinions from different disciplines. We consider it as a useful tool in the universal language for the therapy and education of CY with CP.

수학적 문제해결역량을 위한 평가 문항의 조건과 그 실제 (Analysis of Mathematical Problem Based on Mathematical Problem Solving Competency)

  • 이선영;이지수;한선영
    • 한국수학교육학회지시리즈A:수학교육
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    • 제57권2호
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    • pp.111-136
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    • 2018
  • This study suggests a framework for analyzing items based on the characteristics, and shows the relationship among the characteristics, difficulty, percentage of correct answers, academic achievement and the actual mathematical problem solving competency. Three mathematics educators' classification of 30 items of Mathematics 'Ga' type, on 2017 College Scholastic Ability Test, and the responses given by 148 high school students on the survey examining mathematical problem solving competency were statistically analyzed. The results show that there are only few items satisfying the characteristics for mathematical problem solving competency, and students feel ill-defined and non-routine items difficult, but in actual percentage of correct answers, routineness alone has an effect. For the items satisfying the characteristics, low-achieving group has difficulty in understanding problem, and low and intermediate-achieving group have difficulty in mathematical modelling. The findings can suggest criteria for mathematics teachers to use when developing mathematics questions evaluating problem solving competency.