• Journal of the Korea Society of Computer and Information
• /
• v.29 no.9
• /
• pp.197-205
• /
• 2024

SNOMED CT is the most widely used comprehensive clinical terminology system worldwide. However, due to the vastness of the terminology and the continuous growth of medical knowledge, the system involve quality issues such as structural inaccuracies and inconsistencies, including missing concepts or relationships and hierarchical errors. In this paper, we propose a method to enhance the consistency of the system by detecting potentially missing concepts by utilizing attributes linked to concepts. The proposed method analyzes the characteristics of the attribute relationships of concepts, extracts sibling concepts that share the same characteristics, and then evaluates whether the parent concepts reflect these characteristics to detect potentially missing concepts. By applying this method to the March 2023 SNOMED CT international release, we identified 564 instances where parent concepts did not reflect the common attributes of their sibling concepts, and a total of 384 potentially missing concepts were detected, including cases involving multiple parent concepts.

• Journal of Energy Engineering
• /
• v.9 no.1
• /
• pp.76-81
• /
• 2000

풍속자료의 측정이 예기치 못한 원인으로 실패하는 일이 종종발생한다. 풍속자료의 해석을 위해서는 이렇게 망실된 풍속자료의 복원이 필요하다. 이 경우 유용한 측정자료를 바탕으로 적절한 내삽법(혹은 외삽법)으로 망실된 풍속자료를 복원하는 것이 일반적인 방법이다. 이때 해당지역의 지면조도값이 필요하고, 일반적으로는 상수로 추정된 지면조도값을 사용한다. 이에 반하여 , 본 연구에서는 방위별로 변하는 지면조도의 개념을 새로이 제안하였다. 누락 풍속자료의 복원사례에 적용하여 제안된 방법의 신뢰도를 검토한 바 기존의 지면조도를 일정 값으로 하는 것보다 제안된 방법이 풍속자료의 보정 및 복원을 보다 더 정확하게 할 수있음을 확인하였다. 따라서, 방위별 장애물의 편차가 크고 , 계절별 풍향의 변화가 심할 경우에는 제안된 지면조도의 개념은 유용한 접근법이 될 것으로 기대한다.

• Proceedings of the Korea Association of Information Systems Conference
• /
• 1997.10b
• /
• pp.171-204
• /
• 1997

원가 및 관리회계분야에서는 이미 선진국을 중심으로 활동개념을 도입한 활동기준 원가 계산(ABC : activity-based costing)이 성공적으로 도입·운영되고 있다. 하지만 국내외 적으로 재무회계분야에서는 전통적으로 복식부기시스템(double-entry bookkeeping system)에 지나치게 편중되어 있어서 회계정보의 산출과정에서 여러 가지 제약을 받고 있 는 것도 사실이다. 이러한 문제점을 개선·보완하기 위해서 재무회계 분야에도 활동개념을 도입했는데, 이것이 바로 활동정보회계(AIA : activity information accounting)이다. AIA는 기업의 활동이 발생하는 즉시 복식부기처리과정을 거치지 않고 활동과 대응가치의 처리방법 을 통해 실시간으로 회계정보를 생산하며, 기업의 모든 부서가 정보를 즉시 공유하고 교류 함으로써 기업유기체를 가능케 하는 새로운 회?리방법론이다. AIA의 개념을 구현하기 위해 이스턴컨설팅(주)에 의해서 개발된 활동정보회계시스템(activity information accounting system)은 복식부기시스템을 전면 부정하기 보다는 이를 점자 개선하고 보완하려는 의도에 서 개발된 종합회계처리프로그램이며, 따라서 복식부기의 모든 회계처리과정을 누락시키지 않으면서도 다양 회계, 관리 및 경영분석보고서를 제공해준다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2001.04b
• /
• pp.355-357
• /
• 2001

사건, 사고 관련 기사의 요약은 단순히 원문이 무엇을 말하는 가를 지시하는 것보다 가능한 요지를 판독하면서 필요한 정보를 누락시키지 않고 표현할 수 있는 것이 바람직하다. 이를 위하여 본 논문에서는 사건, 사고 관련 기사의 자동 요약문 생성을 위한 중간 개념 표현 방법을 제안한다. 단락 자동 구분을 통한 중요 문장 추출을 거쳐 각 단락의 중심문장을 파악하고, 단락내의 정보들을 의미 파악된 중심 문장에 추가, 병합하여 단락의 내용을 대표하는 Paragraph Representation Structure(PRS)를 생성한다. 이들은 통합과정을 거쳐 하나의 Unified Representation Structure(URS)로 만들어지며, 이것은 중간 개념 표현으로 다국어 자동 요약문 생성을 위한 기반이 될 수 있다. 본 연구에 이용한 코퍼스는 비행기, 선박, 차량, 열차 사고와 화제 폭발 및 사건 관련 신문 기사를 대상으로 한다.

• Journal of Korean Society of Transportation
• /
• v.17 no.2
• /
• pp.105-114
• /
• 1999

The pattern of traffic streams in residential streets is different from the ordinary roads separated by pedestrian and car lanes. Such fact makes it difficult to evaluate the new counter-measures with existing indices and methods. In this study, a unified, consistent new method is introduced as Time-Space Occupancy (TSO) concept. An application of TSO concept will suggest a TSO exposure volume index which can show the decree of danger in residential streets where vehicles, pedestrian and other traffic streams are interacted. The validity of TSO exposure volume index will be verified through the survey conducted in Seoul and the subjects will be the residents who live at various kinds of residential streets.

• Journal of Digital Convergence
• /
• v.15 no.3
• /
• pp.365-373
• /
• 2017

This research aims to verify the moderating effect of sports activity satisfaction in the relationship between adolescents' communication skills and positive self-concept within peer group. To achieve this purpose, this study extracted 250 samples from five boys high schools in Gyeonggi-do, and used survey of 232 students for actual analysis excluding the surveys with unfaithful answer or double entry. Questionnaire was used as a tool for collecting data and conducted frequency analysis, correlation analysis and moderator regression analysis to analyze the collected data. This study drew the following results. It was identified that sub-factors of sports activity satisfaction as social, physical, environmental and educational satisfaction have the moderating effect in the relationship between adolescents' communication skills and social self-concept with peer group. In other words, communication skills within adolescents' peer group play an important role in improving positive self-concept, but when sports activity satisfaction put as a moderating variable, adolescents' positive self-concept would be more improved.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.9
• /
• pp.9-17
• /
• 2017

Ensuring the safety of automobiles and trains during system operation is regarded as indispensable due to the progress in unmanned operation. The automotive functional safety standard, ISO 26262, has been proposed to ensure the safe design of vehicles. This standard describes in detail the required risk analysis and evaluation procedure and safety measures, while appropriately reflecting the system design information. Therefore, much research has been done on the risk analysis procedure, wherein the design information is mostly extracted from physical components of similar systems already in operation, the information traced back to obtain constituent functions, and then methods of identifying risk sources are studied. This method allows the sources of risk to be identified quickly and easily, however if the design requirements are changed or systems are newly developed, others may be introduced which are not accounted for, thereby yielding mismatched design information. To resolve this problem, we propose a top-down analysis in order to utilize the system design information appropriately. Specifically, a conceptual system is designed to obtain the functions, which are then analyzed. Then, a function-based fault tree analysis is conducted, followed by a risk source analysis. In this paper, a case study of automotive safety is presented, revealing that the proposed method can analyze the risk sources with reduced possibility of omission by systematically reflecting the system design information.

• Communications of Mathematical Education
• /
• v.28 no.4
• /
• pp.513-528
• /
• 2014

This study is intended to examine 36 in-service secondary school mathematics teachers' conceptions of proof in the context of mathematics and mathematics education. The results suggest that almost teachers recognize the role as justification well but have the insufficient conceptions about another various roles of proof in mathematics. The results further suggest that many of teachers have vague concept-images in relation with the requirement of proof and recognize the insufficiency about the actual teaching of proof. Based on the results, implications for revision of mathematics curriculum and mathematics teacher education are discussed.

• The Mathematical Education
• /
• v.61 no.1
• /
• pp.29-45
• /
• 2022

This study tried to analyze the problems by critically examining how the chance is taught in relation to the concept of chance and randomness in the Korean elementary school mathematics curriculum. To this end, the concepts of chance and randomness were first examined, and problems were presented in based on this by the literature analysis on mathematics curriculum material and textbooks for elementary school in Korea. As a result, there was a lack of experience in reasoning based on data, and randomness instruction was not performed properly. In addition, as the teaching of the sample space was omitted, contradictory materials were being used. Moreover, it was pointed out that the teaching of chance is focused on a specific grade level. For the improvement of the teaching of chance, a teaching of the probability experiment and the sample space were mainly suggested, and it was also suggested that the contents of the data area be adjusted for the composition focused on a specific grade.

• Journal of Korea Multimedia Society
• /
• v.3 no.5
• /
• pp.550-556
• /
• 2000

This paper comes to derive optimal decision rule from incomplete information using the concept of indiscernibility relation and approximation space in Rough set. As there may be some errors in case that processing information contains multiple or missing data, the method of removing or minimizing these data is required. Entropy which is used to measure uncertainty or quantity in information processing field is utilized to remove the incomplete information of rough relation database. But this paper does not always deal with the information system which may be contained incomplete information. This paper is proposed object relation entropy and attribute relation entropy using Rough set as information theoretical measures in order to remove the incomplete information which may contain condition attribute and decision attribute of information system.