• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.135-136
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• 2022

최근 기후변화의 영향으로 태풍 및 국지성 집중호우 등 자연재해 발생빈도가 증가함에 따라 풍수해로 인한 인명피해와 재산피해가 증가하고 있다. 국내에서는 재해연보를 통해 자연재난 피해이력 통계정보를 제공하고 있으며, 당해연도 자연재해상황을 기간별, 시도별, 수계별, 월별, 원인별 총괄통계와 인명피해, 시설피해와 관련된 피해면적, 피해액, 복구액 등 세부내용으로 구성하여 정보를 제공하고 있다. 행정안전부는 국가재난정보시스템을 통해 취합된 지자체 피해이력 통계자료를 입력하고 있는데 입력하는 과정에서 누락, 오기 등의 오류가 발생할 가능성이 있다. 경제적 손실이 증가하고 있는 풍수해 재난이 발생하게 될 경우 피해비용 집계, 피해액 산정 등 정확한 자료로서 구축되지 않으면 연구 및 분석을 수행하기 위한 통계자료로서 활용될 수 없다. 이러한 문제점을 개선하기 위해서 본 연구에서는 1985년부터 2018년까지 재해연보에 대해서 기간별-시군구별 자료분석을 통해 피해이력 데이터 오류 유형에 대해 분류하였다.

• Journal of the Korea Convergence Society
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• v.6 no.5
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• pp.131-142
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• 2015

The aim of study is to present a better teaching strategy to reduce writing errors of Chinese learners of Korean language after finding out what reasons of errors were after analyzing of their writing errors in Korean language. Analyzed contents were writhing in Korean language of 'how I think Korean', 'about Chinese and Korean culture', 'friends' and analyzed what errors were occurred. The vocabulary errors frequencies were counted by the criteria which was set by a researcher. The results were as follows. The frequency of substitute error was the most and were followed by spelling error, wrong type error, omission error and adding error. It is suggested when we teach Korean Language to Chinese learners and develop text for them, the vocabularies should be presented with examples of how to be used in context instead of presenting only vocabulary on the text. It would be a better way to reduce writing errors of Chinese learners of Korean language.

• Journal of the Institute of Convergence Signal Processing
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• v.12 no.3
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• pp.188-193
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• 2011

In this letter, we have derived another exact performance analysis for the OADF(opportunistic adaptive decode-and-forward) relay systems over Rayleigh fading channels. Based on error-events at relay nodes, the received instantaneous SNR(signal-to-noise ratio) is presented and its PDF(probability density function) is expressed as a more tractable form in which the number of summations and the length of each summation are specified. Then, exact average error rate, outage probability, and average channel capacity are obtained as general forms. Simulation results are finally presented to validate that the proposed analytical expressions can be a unified frame work covering all Rayleigh fading channel conditions. Furthermore, it is confirmed that OADF schemes can outperform the other schemes on the average error rate, outage probability, and average channel capacity.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.1182-1185
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• 2013

도로명주소가 법적 주소체계로 지정되고 2014년도부터 전면 시행을 앞두고 있는 상황에서 기존의 지번주소를 도로명주소로 변경하려는 수요가 늘고 있으며 그에 따라 주소 전환 서비스를 제공하는 솔루션들이 증가하고 있다. 행정구역 체계에 따라 단계별로 입력된 지번주소의 도로명주소로의 변환은 크게 어렵지 않고 변환 성공율도 상당히 높지만 자유롭게 입력하여 정제되지 않은 형태의 주소는 전환에 실패하는 경우가 많다. 본 논문에서는 전산입력된 지번주소를 도로명주소로 변환시 주소형태가 정제되지 않은 상황에서도 변환 성공률을 높이기 위해 행정구역 줄임, 일부 주소정보 누락, 오타 등 여러 가지 변형 케이스에 대해서도 유연하게 변환을 수행하는 방안을 연구하였다. 이를 통해 기존 지번 주소의 표준 형태로의 정제는 최대 두 배까지 변환효율을 높일 수 있었다. 그러나 변환시 사용하는 도로명주소 매칭 테이블에 자료의 누락, 건물명의 불일치, 지번과 건물의 1:1 매칭이 되지 않는 경우가 존재하여 원활한 주소 전환을 위해서는 데이터의 정비가 필요하다.

• Journal of the Korea Institute of Building Construction
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• v.17 no.6
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• pp.535-544
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• 2017

This paper analyzes the relations between design errors, prevented by building information modeling (BIM)-based design validation, and their impacts in order to identify critical consideration factors for implementing BIM-based design validation in architecture, engineering, and construction (AEC) projects. More than 800 design errors detected by BIM-based design validation in two BIM-based projects in South Korea are categorized according to their causes (illogical error, discrepancy, and missing item) and work types (structure, architecture, and mechanical, electrical, and plumbing (MEP)). The probabilistic relations among the independent variables, including the causes and work types of design errors, and the dependent variables, including the project delays, cost overruns, low quality, and rework generation that can be caused by these errors, are analyzed using logistic regression. The characteristics of each design error are analyzed by means of face-to-face interviews with practitioners. According to the results, the impacts of design error causes in predicting the probability values of project delays, cost overruns, low quality, and rework generation were statistically meaningful.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.13 no.1
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• pp.93-103
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• 2002

The aim of this study is to examine the diagnostic profiles and related clinical variables of children with attention and hyperactivity in psychiatric outpatient clinic. Seventy one children with age range of 5 to 14 were diagnosed by DSM-IV, and assessment battery including KEDI-WISC, KPI-C, ADS(ADHD Diagnostic System) were completed. The subjects were divided into 3 diagnostic groups：ADHD only(n=17), ADHD comorbid(n=27), Other diagnosis(n=27). The results were as follows：In ADHD comorbid group, tic disorder, developmental language disorder, borderline intellectual function, oppositional defiant/conduct disorder, and learning disorder were combined in descending order. Other diagnosis group consisted of tic disorder, borderline intellectual function, depression/anxiety, oppositional defiant/conduct disorder, and others. There were significant differences in IQ, PIQ, and VIQ among the three groups, and ADHD only group showed higher scores of IQ and VIQ than ADHD comorbid group. On the KPI-C, there were no significant differences in all subscales among the three groups. On the visual ADS, omission error and sensitivity showed significant differences among the three groups, and ADHD comorbid group represented higher omission error and lower sensitivity than other diagnostic group. The findings indicated that the inattention and hyperactivity symptoms could be diagnosed into diverse psychiatric disorders in child psychiatry, and ADHD children with comorbidity will show more problems in academic performance and school adjustment.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04b
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• pp.868-870
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• 2004

프로그래머는 프로그램 작성 중 문법적으로 올바르지 않은 문장을 입력할 수 있다. 문법적으로 불완전한 문장 입력은 사용자의 계속적인 편집 상태를 종료하고, 정상적인 파싱을 보장하지 않는 원인이 된다. 따라서, 사용자는 편집기가 제공하는 적절한 오류 처리 루틴을 통해 문법적으로 잘못된 문장에 대해 수정 작업을 실행해야 한다. 에디터 환경에서의 사용자 입력은 입력 부분의 왼쪽, 오른쪽에서 완전하지 못한 형태로 입력될 수 있다. 따라서, 에디터가 문법적으로 빠져있는 부분의 심볼이 무엇인지 정확히 인식 가능하고, 주어진 문법에 따라 부분적인 파스트리를 완성한다면, 사용자의 프로그래밍 편집 상태를 종료하지 않고 계속적인 편집과 성공적인 파싱을 보장할 수 있을 것이다. 본 논문은 파서가 문법적으로 올바르지 않은 문장의 입력에 대해 해당 문법에 따라 빠진 부분을 올바로 인식하고, 누락된 문법 심벌을 찾아 부족한 부분 파스 트리를 완성함으로써 성공적인 편집을 보장할 수 있는 파싱 방법을 제안하고 실험한다. 제안된 파싱 방법을 통해 사용자는 프로그래밍 편집 중 문법 오류에 대한 부담을 줄일 수 있으며, 불완전 입력에 대해 계속적인 파싱을 보장받아 편집 효율을 높일 수 있다.

• Journal of IKEEE
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• v.15 no.3
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• pp.198-204
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• 2011

In this letter, another analytical approach for the opportunistic amplify-and-forward (OAF) relay systems is proposed over Rayleigh fading channels. Based on set-operation at the selected relay node, its selection probability as the best relay is derived and then, the probability density function (PDF) of the received instantaneous signal-to-noise ratio (SNR) is expressed as a more tractable form in which the number of summations and the length of each summation are specified. Then, the average error rate, outage probability, and average channel capacity are obtained as approximated closed-forms. Simulation results are finally presented to validate that the proposed analytical expressions can be a unified frame work covering all Rayleigh fading channel conditions. Furthermore, it is confirmed that OAF schemes can outperform the other non-selective schemes on the average error rate, outage probability, and average channel capacity.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.19 no.2
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• pp.104-111
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• 2008

Objectives : The purpose of this study was to compare two subtypes of attention-deficit hyperactivity disorder (ADHD) and controls in their attention using ADHD diagnostic system (ADS), a kind of continuous performance test. Methods : Subjects of this study were 8 children with ADHD-predominantly inattentive type, 28 children with ADHD-combined type and 20 control children. Ages ranged from 5 to 14 years. The Korean Educational Development Institute version of the Wechsler Intelligence Scale for Children (KEDI-WISC) and the ADS were administered to all subjects to provide measures of intelligence and attention. Results : Significant differences were found in the ADS variables for the three groups. When compared with controls, the ADHD-predominantly inattentive type children scored significantly higher on the omission error at middle stage and later stage and ADHD-combined type children scored significantly higher on the omission error and reaction time at later stage. When compared with the other two groups, the ADHD-combined type children scored significantly higher on the commission error at all three stages. Conclusion : Our results suggest that the two subtypes of ADHD have different features in attention deficit. And there was a possibility that commission error is available variable to show cognitive characteristics of ADHD-combined type than any other ADS variables. Further studies are needed to evaluate this finding.

• Journal of the Korean Society for Library and Information Science
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• v.57 no.1
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• pp.161-182
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• 2023

In the recent cataloging environment, the function of authority data is becoming more important. In Korea, a pilot project for sharing and joint use of the national authority data has been promoted since 2019, and a plan to automatically construct retrospective authority data using national authorities is in progress. This study aims to (1) analyze the results of the pilot project for retrospective authority data jointly promoted by the National Library of Korea and KERIS in 2019, (2) explore methodological limitations and problems in the process, and (3) derive policy proposals for constructing authority data more efficiently. To this end, a university library participating in the pilot project was investigated as a case study. Based on it, the automatic generation rate and accuracy of authority data, and errors and omissions cases and causes were analyzed in detail. As a results of the study, it was found that the quality of union catalogs and bibliographic records had a great influence on automatically constructing authority data, and supplementary methods were needed to minimize these limitations.