치수안정성을 고려한 우수관로시스템 설계모형 개발

유재연(Yu, Jae Yeon),송양호(Song, Yang Ho),이정호(Lee, Jung Ho) 대한토목학회 2018 대한토목학회 학술대회 Vol.2018 No.10

수치모형을 이용한 우수관로 내부 이상유동 흐름특성 연구

유재연(Yu, Jae Yeon),송양호(Song, Yang Ho),이정호(Lee, Jung Ho) 대한토목학회 2017 대한토목학회 학술대회 Vol.2017 No.10

알쯔하이머형 치매의 의미적 어휘 유창성과 의미특징 연구

윤유미(Yu-Mi Yun),유재연(Jae-Yeon Yoo) 한국언어치료학회 2006 言語治療硏究 Vol.15 No.3

The purpose of this study was to help understand the characteristics of category of normal subjects and DAT subjects seeing through the categories of grains, fruits and vegetables and the semantic features of examples of specific category. The method was applied to analyze the discourse of 18 normal aging subjects, 18 patients with Alzheimer dementia. Semantic word fluency tasks and Semantic feature tasks were administered. The results of the survey data are as follows: ① DAT subjects show a poor result in semantic work fluency and semantic features in comparison with normal subjectes, while there is little difference between the two, ② Typical examples considering output order and frequency are apple in the field of fruits and radish and cabbage in the field of vegetables, ③ The analysis of semantic features show that describing color and taste was often in intrinsic features and taste was described often in fruits and method of cooking in extrinsic features. Through the results, the examples representing fruits and vegetables are helpful to present word normalization of categories and DAT subjects show poor resut in extrinsic semantic features and describing extrinsic feature between normal subjects and DAT worth diagnosing. We can think that the normalization of semantic categories features help language training effective.

국내 성악가 음성에 대한 문헌연구

김유리(Yu Ri Kim),유재연(Jae Yeon Yoo) 한국언어치료학회 2016 한국언어치료학회 학술발표대회 논문집 Vol.2016 No.12

Purpose: It have been no systematic studies about the Korean classical Singer"s voice. It tries to present the direction of the research of the voice of classical singer. Methods: We analyzed current studies related to the classical singers" voice of 42 articles. Results: The researches have mainly been studied in physiologic, acoustic, aerodynamic, resonance, treatment and others. Physiologic analysis(13 articles), acoustic(12 articles), aerodynamic(10 articles), resonance(9 articles), treatment(5 articles) and others(4 articles). Conclusions: In order to provide a systematic voice consulting for the singer, it is necessary to perform researches on the characteristics of the voice of the singer as well as therapeutic efficacy.

국내 성악가 음성에 대한 문헌연구

김유리(Yu Ri Kim),유재연(Jae Yeon Yoo) 한국언어치료학회 2017 言語治療硏究 Vol.26 No.1

Purpose: There are few studies on voice characteristics and speech therapy for classical singers in Korea. Through literature research on 41 journals and three dissertations about classical singers, this study aims to summarize the results and suggest directions of research. Methods: We analyzed the literature in 44 journals and dissertations from 1986 to 2016. Results: The acoustic, physiological, and aerodynamic characteristics of the classical singer’s voices were measured using voice analysis instruments. There were 15 papers describing physiological characteristics, 26 papers describing acoustics characteristics, 16 papers describing aerodynamic characteristics, and five papers related to voice therapy of singers. In the acoustic analysis, fundamental frequency, sound intensity, jitter, shimmer, and NHR were measured through MDVP. The physiological analysis used EGG to measure contact quotient (CQ) and length of vocal tract. For aerodynamic analysis, the vocal range was examined through the MPT and the Vocal Range Profile. The characteristics of the singers formant were investigated by the change of resonance cavity according to laryngeal position. According to the survey results, the singers were more aware of voice fatigue and subjective symptoms, and they were interested in their vocal hygiene management. Conclusions: Accurate voice analysis and proper voice consulting are required for correct vocal parts selection and effective voice management according to voice characteristics. Systematic voice consulting for singers and effective treatment methods should be studied.

유사성 평가기법을 고려한 우수관망 신뢰도 산정 기법

최경민(Choi, Gyung Min),유재연(Yu, Jae Yeon),이원진(Lee, Won Jin),이정호(Lee, Jung Ho) 대한토목학회 2017 대한토목학회 학술대회 Vol.2017 No.10

국내 Bordetella pertussis 분리균주에서 Agglutinogen과 Fimbriae 혈청형 변이 분석

정상운,문유미,성화영,강연호,유재연,Jung, Sang-Oun,Moon, Yu-Mi,Sung, Hwa-Young,Kang, Yeon-Ho,Yu, Jae-Yon 한국미생물학회 2008 미생물학회지 Vol.44 No.3

Bordetella pertussis는 유아의 호흡기감염질환인 백일해의 원인균으로 배신도입에 의해 발생률이 크게 낮아졌다. 그러나 최근에 일부 백신접종률이 높은 국가에서 증가된 백일해 발생건수가 보고되고 있으며, 그 추정 원인 중에 하나는 백신주와 유행주 사이의 유전형 흑은 혈청형 변이 이다. 따라서 분리주에 대한 변이 현황을 유전형 혹은 혈청형 분석을 통하여 확인하는 것이 필요하고 국내에서 백일해 발병증가에 대한 가능성을 추정해야 한다. 이에 본 연구에서는 $1999\sim2006$년 사이에 분리된 국내 백일해 분리균주의 변이 양상을 agglutinogen과 fimbriae에 대한 혈청형 조사를 통해 확인하였다. 그 결과 agg 1과 fim 2가 국내 분리주에서 가장 많이 발견되는 혈청형이었고, 두 항원 모두 시대에 따른 혈청형 변이 현상이 확인되었으며, 특히 agglutinogen의 경우는 백신균주(agg 1,2)와는 다른 유형(agg 1)이 증가되는 유형으로 나타났다. 그러나 fimbriae의 경우는 백신균주(fim 2)와 동일한 유형이 증가되어 차이를 나타내었다. 이러한 결과는 백일해 발병증가가 나타나는 국가들에서도 확인되는 현상으로 국내에서의 백일해 발병증가에 대한 보다 정확한 예측을 위해서는 항원결정기 유전자에 대한 변이정도 및 정상인에서의 항체가 분포양상 등에 대한 연구가 필요할 것으로 사료된다. Bordetella pertussis is pathogenic bacteria causing pertussis, a infectious respiratory disease for the infants. The incidence rate of pertussis was significantly decreased after introduction of vaccine. However, increased pertussis cases are recently reported in several countries with high vaccine coverage. One of the inferred reasons is genotype or serotype variation between circulating strains and vaccine strains. Therefore, it is required to confirm the variation status of the isolates by genotype or serotype analysis and the possibility of pertussis outbreak in Korea should be estimated. For this, the serotype variations of the isolates from $1999\sim2006$ were investigated in agglutinogen and fimbriae. As the result, the most frequent serotype in the isolated strains was agglutinogen 1 and fimbriae 2 serotypes. Moreover, serotype transition from vaccine serotypes to non-vaccine serotypes was observed. Especially, the transition pattern of agglutinogen serotype was directed to increase a different type (agg 1) from the vaccine type (agg 1,2). However, in case of fimbriae, the same type (fim 2) with vaccine strain was increased. These results were also observed in other countries with increasing incidence of pertussis. For more predictable results to know increasing possibility of pertussis incidence in Korea, the studies on genetic variations of antigenic determinant genes and prevalence of antibody titer in normal population should be performed in the further.

국내 기업의 업종별 지속가능성 순위 평가

구자건(Ja-Kon Koo),유재연(Jae-Yeon Yu) 한국환경사회학회 2012 환경사회학연구 ECO Vol.16 No.2

‘지속가능성 보고’ 또는 ‘지속가능경영 보고서’는 지속가능한 발전을 위한 조직의 성과를 측정, 공개하고 이해관계자에게 그에 걸맞은 책임을 약속하는 활동을 의미한다. 지속가능보고서의 경우 제3자 검증을 거치지만, 보고서 간행 국제기준의 부합성 여부와 내용의 충실성을 일반인이 판단하기는 쉽지 않은 편이다. 본 연구는 국내 기업의 업종별 지속가능경영 수준을 비교 평가하기 위한 목적을 가지고 실시되었다. 국내 15개 업종별 지속가능성 보고서를 기초로 GRI(Global Reporting Initiatives) G3 Guideline 기준 부합도 및 내용의 충실 정도를 비교 평가하였다. 그리고 해당 결과를 통해 지속가능 우수 업종을 판단하여 업종별 수행 미흡 지표분석 및 향후 지속가능성 보고의 발전방향을 제시하고자 하였다. 국내 기업의 업종별 지속가능경영 수준을 비교 평가하기 위해 2010-2011년에 간행된 각 업종별 기업들의 지속가능성 보고서를 수집한 후 ‘원료’, ‘에너지’, ‘생물다양성’, ‘대기오염 물질과 폐수 및 폐기물’, ‘기타’ 등 GRI G3 가이드라인 환경지표(EN)에 기준한 6개 지표로 평가하였다. 적합성 및 충실도를 5점 척도에 적용 산출한 후 그 결과를 비교 평가하였다. 국내 기업의 환경부문 지속가능 경영 수준을 각 업종별 지속가능성 보고서를 통해 분석한 결과 대형유통업 > 철도운수업 > 금융업 > 생활용품제조업 > 전기전자제품제조업 > 종합건설업 > 정유업 = 자동차제조업 > 공기업A(국토해양부 산하) > 발전업 > 공기업B(지식경제부 산하) > 기계제조업 > 항공운수업 > 보험업 > 제철업 순으로 나타났다. 지속가능보고서 작성 기준의 체계화를 위해 GRI 가이드라인의 보완, 명확한 경계의 설정과 핵심지표와 부가지표의 수정이 필요하다. ‘Sustainability report’ is an activity which ensures the responsibility of the organization by measuring and disclosing the performance of the organization to the stakeholder for sustainable development. Generally, a sustainability report is verified by a third party but determining the compatibility and fidelity of the report according to international standards cannot be easily determined by the general public. This study aims to compare the sustainability level of Korean domestic businesses according to industry and this comparative evaluation was made based on the sustainability reports of 15 different domestic businesses according to the GRI (Global Reporting Initiatives) G3 Guidelines. Then through the appropriate results, sustainable leading businesses were determined. Eventually, this study aims to analyze the unsatisfactory aspects and to propose the future developmental direction of the sustainability report. In order to determine and compare the sustainability level of domestic businesses, sustainability reports from 2010 to 2011 were collected and assessed according to 6 types of indexes from the GRI (Global Reporting Initiatives) G3 Guidelines EN (Environmental Indexes) which include Materials, Energy, Water, Biodiversity, Emissions/Effluent and Waste and Miscellaneous. The level of fidelity and conformity were calculated based on a 5-point scale and the resulting order of the sustainability level of domestic businesses is as follows: Large distribution > Railway transportation > Financial business > Household item manufacturing > Electronics manufacturing > Construction industry > Refining industry = Car manufacturing > Public enterprise group A(Ministry of Land, Transport and Maritime Affairs-affiliated organizations) > Electricity generation > Public enterprise group B(Ministry of Knowledge Economy-affiliated organizations) > Machinery manufacturing > Air transportation > Insurance business > Iron industry. It is required to reform the GRI guideline more systematically and to revise the report boundary and indices clearly.

우수관로 내부 2상 유동 해석에 따른 한계소류력 관계식 제안

송양호(Song Yang Ho),윤린(Yun Rin),유재연(Yu Jae Yeon),공수창(Gong Soo Chang),이정호(Lee Jung Ho) 한국방재학회 2017 한국방재학회논문집 Vol.17 No.5

우수관거의 치수능력을 유지하고 홍수시 침수를 방지하기 위해 관거 내부에서의 더 많은 흐름특성을 이해하는 것은 매우 중요하다. 관 내부의 유출량 거동에 영향을 미치는 요소에는 관거 내부로 함께 유입되는 토사 슬러리가 있으며 이송·침전 과정을 거쳐 퇴적층을 형성할 때 통수능 저하에 따른 문제를 야기시킨다. 토사 슬러리는 유체와 혼합된 상태로 관거로 유입된다. 관 내부에서의 난류 에너지와 에너지 소산으로 인해 분리현상을 일으키며 하상에 퇴적을 형성할 경우 관거 통수능 저하의 주요 문제점이 된다. 우수관거로 유입되는 토사 슬러리에 대한 거동 특성을 파악하고 이송·침전의 원인을 분석할 필요가 있다. 본 연구에서는 우수관거 내부로 유입되는 토사 슬러리를 고려하여 관거 내부의 유체와 토사 슬러리를 동시에 고려한 2상 유동 흐름의 분석조건을 난류흐름의 관점에서 도출하고자한다. 우수관거 내부 흐름에 대한 수치해석 모델링을 실시하였으며, Navier-Stokes 방정식과 k-ε 난류모델의 반영을 통해 실제 우수관거 내부에서의 유체와 토사 슬러리의 흐름에 대하여 분석하였다. 우수관 내부 토사 슬러리의 이송·침전 현상을 검토하였으며, 결과들을 바탕으로 한계소류력 산정을 통해 관 내부에서 발생하는 이송·침전에 대한 기준을 제안하였다. It’s important to understand a lot more flow properties in sewer conduit in order to maintain the flood control capacity, and to prevent flooding an urban inundation. There is soil slurry flowing inside the conduit together in the influencing elements on runoff behavior and causes a problem consequent on the decline in discharge capacity when it forms a sedimentary layer through the transport·deposition process. Soil slurry flows in conduit in a state mixed with a fluid. There arises a separation phenomenon due to the turbulent energy and energy dissipation inside the conduit, and in case sedimentation forms in a bed, it becomes a major problem of the decline in discharge capacity. Therefore, it is there is a need to grasp the behavior property of soil slurry, and to analyze the reason for its transport·deposition process. In this study, the soil slurry incoming the storm sewer conduit was considered, two-phase flow analytical conditions considering both the fluid and soil slurry in the conduit are to be derived from the perspective of the turbulent flow. This study conducted the numerical value analysis modeling of the internal flow and analyzed both the fluid and soil slurry inside an actual conduit through the reflection of Navier-Strokes equation and k-ε turbulence model. This study examined the transport·deposition phenomenon occurring inside the conduit, and proposed the standard of the transport·deposition occurring inside the conduit through the critical tractive force assessment on the basis of results.

한국 소프라노 성악가의 가창음성장애지수 연구

전불희(Bul Hee Jeon),김유리(Yu Ri Kim),유재연(Jae Yeon Yoo) 한국언어치료학회 2016 한국언어치료학회 학술발표대회 논문집 Vol.2016 No.12

Purpose: The purpose of this study was to investigate the subjective feelings and attitude toward soprano voice and the voice satisfaction at singing by using the Singing Voice Handicap Index(SVHI) in Korean. Methods: 61 singers working as soprano were conducted through mobile questionnaire. Results: The SVHI mean value of 61 soprano singers is 43.1, and soprano singers perceived that there was little problem with voice. And the average of voice satisfaction at singing was 1.98, and soprano singers were generally satisfied with their voice when singing. Conclusions: Looking at SVHI-related studies, SVHI is useful for predicting the voice problems of singers and for determining the degree of voice impairment. In this study, SVHI and voice satisfaction were assessed, but an acoustical-aerodynamic evaluation should be carried out in conjunction with the overall evaluation of the voice. In addition, since the research on the voice of domestic singers was very limited, many studies should be done in the future.