성대마비 및 성대용종 환자의 수술 전과 후의 공기역학적 변수 비교

이다혜,김재옥,오재국,최홍식,Lee, Dahye,Kim, Jaeock,Oh, JaeKoon,Choi, Hong-Shik 대한후두음성언어의학회 2015 대한후두음성언어의학회지 Vol.26 No.2

Background and Objectives : Aerodynamic analysis is an examination which provides information regarding various vocalization measures indicating laryngeal efficiency. Voice evaluation using such examination must be capable of distinguishing between normal to abnormal voice. It also observes variables on aerodynamic characteristics by gender in regards to patients of vocal disorders, especially of vocal cord paralysis and vocal polyp, and compares the conditions before and after surgery. This paper therefore, seeks to build a framework for establishing standard levels of aerodynamical characteristic on vocal disorders. Subjects and Methods : The study was intended for a total number of 20 patients with vocal polyp or unilateral vocal cord paralysis. Those with the vocal polyp underwent laryngomycroscopy surgery and the vocal cord paralysis, vocal fold injection using Restylane. Aerodynamic analysis fulfilled the Maximum sustained Phonation (MXPH) and Voicing Efficiency (VOEF) by using PAS Model 6600 (KayPENTAX, USA). Results : In MXPH, increase in PHOT were evident with vocal polyp after surgery. As for patients with vocal cord paralysis, MAXDB, MEADB, DHODB, PHOT all have increased and MEAP, PEF, MEAF decreased after surgery. In VOEF, patients with vocal cord paralysis who underwent surgery showed increase in MAXDB, MEADB, DHODB, FET100, ARES, but decreases in PEF, TARF. Conclusion : Overall, it can be concluded that patients with the vocal polyp and vocal cord paralysis seemed to get closer to the normal values after than before surgery in majority of measures. This confirms that the function of their vocal cord has improved nearly to normality through operations.

지속가능한 사회를 위한 다문화가족 자녀 대상 언어교육에 대한 제언

이다혜(Dahye Lee),정유선(Yousun Jung) 지속가능과학회 2014 지속가능연구 Vol.5 No.3

국내 거주 다문화가족은 우리나라 전체 인구의 2%에 해당되면, 그들의 자녀도 증가하는 추세를 보이고 있다. 그중 중국인 결혼이민자 가족과 자녀가 가장 많은 수를 차지하고 있다. 그러나, 중국인 결혼이민자 가족은 여전히 한국사회 정착에 어려움을 호소하고 있다. 한국어 사용이 우선시 되는 국내 사회적 분위기로 인해 자의반 타의반으로 국내 비한국계 중국 국적 결혼이민자는 가정 내에서의 한국어 사용이 증가하면서, 자녀와의 중국어 의사소통 역시 상대적으로 줄어들게 되었다. 그 결과, 자녀들에게 부모와 자식 간의 정서적 유대감은 낮아지고 자신의 정체성도 흔들리는 결과를 낳게 되었다. 이는 고스란히 가정 문제 발생의 여러 요소로 자리 잡게 되었고, 사회 통합에도 부정적인 영향을 끼치게 될 소지를 가지게 된다. 이에 본고는 이러한 문제의 간극을 좁힘과 동시에 21세기 지속가능한 사회로 발전시켜 나가기 위해, 비한국계 중국인 결혼이민자 가족의 배우자와 자녀에게 적극적이고 포용적인 자세로 중국어교육을 시행해야 할 시점에 이르러 이에 대한 방안을 제시했다. The number of multicultural families accounts for 2% of whole number of population. Among them, the multicultural family consisting of non-Korean Chinese and Korean is of the greatest importance showing 20,635(66.2%) marriage cases between Korean man and non-Korean Chinese woman and 5,042(42.2%) between non-Korean Chinese man and Korean woman. For those reasons, the number of children from multicultural family has been increasing. According to Safety Executive, the number of the multicultural children has steadily increased from 44,285 in 2007 to 204,204 this year. As the percentage of non-Korean Chinese married Immigrant family is 50.7%, it takes the first place. In contrast with this trend, marriage based immigrants who have Chinese nationality still complain of difficulties in settling down in Korea. Due to the environment that using Korean language is preferred, they don"t have any choice but to use Korean at home, leading to the lack of communication with children using Chinese. As a result, emotional connectedness is going down between parents and children and they have an identity crisis. They have become various elements in home problems and can influence negative effects on social unification. It"s the right time to implement Chinese teaching for the spouse and children of non-Korean Chinese married Immigrant family with an active and tolerant attitude to narrow down the gap of problems and to have the influence as a global society. However, it is true that a discussion or enforcement on the social recognition and need of this problems has not been treated. Thus, this study proposed Chinese teaching for the children of non-Korean Chinese married Immigrant family.

s-IGDT 시스템의 X-선원 배열 형태 및 투영상 개수에 따른 영상 화질 평가에 관한 연구

이다혜(Dahye Lee),남기복(KiBok Nam),이승완(Seungwan Lee) 대한방사선과학회(구 대한방사선기술학회) 2022 방사선기술과학 Vol.45 No.2

Although stationary inverse-geometry digital tomosynthesis (s-IGDT) is able to reduce motion artifacts, image acquisition time and radiation dose, the image quality of the s-IGDT is degraded due to the truncations arisen in projections. Therefore, the effects of geometric and image acquisition conditions in the s-IGDT should be analyzed for improving the image quality and clinical applicability of the s-IGDT system. In this study, the s-IGDT images were obtained with the various X-ray source arrangement types and the various number of projections. The resolution and noise characteristics of the obtained s-IGDT images were evaluated, and the characteristics were compared with those of the conventional DT images. The s-IGDT system using linear X-ray source arrangement and 40 projections maximized the image characteristics of resolution and noise, and the corresponding system was superior to the conventional DT system in terms of image resolution. In conclusion, we expect that the s-IGDT system can be used for providing medical images in diagnosis.

성악과 실용음악 보컬 전공 대학생들의 주관적 음성평가 비교 예비연구

이다혜(Lee, Dahye),황영진(Hwang, Youngjin),김재옥(Kim, Jaeock) 한국음성학회 2014 말소리와 음성과학 Vol.6 No.2

The purpose of this study was to determine whether the Korean Singing Voice Handicap Index (K-SVHI) was suitable for singers in other genres than vocal music to assess their vocal problems subjectively. Twenty six college students majoring in vocal music and twenty six students majoring in applied music were included in the study. They were divided into G0 and G1 in voice quality using the GRBAS scale during the tasks of singing. K-SVHI was divided into three sub-areas (Physical, Functional, and Emotional). In the singing task, both groups showed no significant difference between K-SVHI scores by G scale. In the reading task, the vocal music group had significantly higher K-SVHI in G0 than in G1 in K-SVHIs by G scale, while the applied vocal music group had significantly higher K-SVHI in G1 than in G0. Also, the two groups were not significantly different in G0, G1 in the singing task while the vocal music group showed higher K-SVHI than the applied vocal music group in G0 in the reading task. In addition, the vocal music group had higher K-SVHI than the applied vocal music group in G1 in both tasks. As comparing by groups in three sub-areas of K-SVHI, significant differences were found in the Emotional and Functional area. Those results showed that singers felt their voice problems differently by musical genres, which means that K-SVHI may not be a proper tool for evaluating voice handicap of singers in diverse voice music genres.

DFN 매질에 대한 등가연속체 유동모델의 적용 가능성 평가에 관한 연구

이다혜(Dahye Lee),엄정기(Jeong-Gi Um) 한국암반공학회 2017 터널과지하공간 Vol.27 No.5

본 연구는 다양한 기하학적 속성을 갖는 총 72개의 DFN 블록에 대하여 DFN 유동모델과 등가의 수리상수를 사용한 연속체 모델을 각각 적용하여 두 결과 간의 상관성을 분석하였다. DFN을 연속체로 가정한 이론적 블록수리전도도와 DFN 유동모델로 산정한 블록수리전도도 사이의 상대오차(ER)가 0.2 이하인 DFN 조건에서 두 접근법 사이에 강한 선형 관계를 이루며 두 결과가 거의 일치하는 것으로 평가되었다. DFN 매질에 대한 연속체 유동해석의 현장적용 가능성을 검토하기 위하여 다양한 DFN 조건을 갖는 지중 원형공동에서의 지하수 유입에 대한 모의 수치실험이 총 48회 수행되었다. 일정한 수리간극의 DFN 매질에 대한 등가연속체 유동모델은 유효한 것으로 평가되었지만 수리간극 변화로 인하여 이방성이 증대되면 DFN 유동모델에 의한 결과에 비하여 과대평가될 가능성이 높다. The correlation analysis between the results obtained from DFN flow model and equivalent continuum flow model were conducted on total of 72 DFN blocks having various fracture geometry and domain size. A strong linear relation seems to exist between the two approaches under condition that normalized relative error for continuum behavior (ER) is less than 0.2, and the results from both methods are found to almost identical. To explore the field applicability of equivalent continuum flow model in DFN media, a total of 48 numerical schemes related to inflow of underground circular openings were implemented under various DFN configurations. The equivalent continuum flow model in DFN media with a constant hydraulic aperture was evaluated as valid. However, as the anisotropy increases due to variation of the hydraulic aperture, the results are likely to be overestimated compare to the DFN flow model.

CSR 활동 수준과 이익 정보에 대한 시장 반응

이다혜(Dahye Lee),이영주(Youngjoo Lee),변상혁(Sanghyuk Byun) 한국경영교육학회 2021 경영교육연구 Vol.36 No.1

[연구목적] 본 연구는 기업의 CSR 수준과 이익 정보에 대한 자본 시장 투자자의 반응과의 관련성에 대해서 검증하고 투자자 심리가 이에 미치는 영향에 대해서 분석한다. [연구방법] 2002년부터 2016년까지의 미국 상장기업을 대상으로 CSR 수준에 따른 이익반응계수를 측정하여 분석하고 투자자 심리와의 상호작용 변수를 추가하여 투자자 심리가 이에 미치는 영향을 분석한다. Lys et al.(2015)의 연구에 따라 CSR 수준을 측정하여 비정상과 정상으로 구분하고 Naughton et al.(2019)의 방법에 따라 투자자 심리를 측정하였다. [연구결과] CSR 수준과 이익반응계수는 양(+)의 관련성이 나타나는데 이러한 관계는 비정상 CSR 수준과 정상 CSR 수준의 구분과 상관없이 나타났다. 그리고 투자자의 심리가 우호적일수록 비정상 CSR 활동 수준과 이익반응계수의 관계는 강하게 나타나지만 정상 CSR 수준과 이익반응계수의 관계는 차이가 없다. 이러한 현상은 기관투자자 지분율이 낮은 경우에만 나타나고 기관투자자 지분율이 높은 기업에서는 나타나지 않는다. [연구의 시사점] 본 연구는 투자자들이 CSR 활동에 대해 정상 수준의 CSR과 비정상 수준의 CSR을 구분하지 못한다는 것을 증명하며 CSR에 대한 투자자의 심리가 우호적일수록 비정상 CSR에 대해 강하게 반응하는 투자자들에게 기관투자자 등의 지배구조가 모니터링 역할을 할 수 있다는 점을 제시한다. 또한 정상 CSR 수준과 비정상 CSR 수준이 기업 가치에 미치는 영향이 상반됨에도 불구하고 투자자들이 이를 구분하지 못하는 결과를 보고함으로써 CSR 수준에 대한 정보를 제도적으로 또는 실무적으로 제공할 필요가 있다는 시사점을 제시한다. [Purpose] This study explores the association between the CSR level and investor’s response to earnings information and examines the influence of investor sentiment on the association. [Methodology] We investigate the effect of CSR level on market response to earnings by including interaction terms between earnings and CSR levels in the regression model. We also interact with investor sentiment to test the effect of investor sentiment. CSR level is measured following Lys et al.(2015) and divided into abnormal and normal level. Investor sentiment is measured based to the method of Naughton et al.(2019). [Findings] Our results report a positive association not only between normal CSR level and the ERC, but also abnormal CSR level and ERC. When investor sentiment for CSR is higher, this positive association is stronger for abnormal CSR level, but not for normal CSR level. When we divide our sample to high institutional investor ownership firms versus low institutional investor ownership firms, the positive relationship revealed in the previous tests exist only in the low institutional investor ownership firms. [Implications] This study implies that investors cannot distinguish between normal CSR level and abnormal CSR level and that institutional investors may play a monitoring role to limit abnormal CSR activities, thereby affecting investors’ decision making. Given the investors’ inefficiency in differentiating normal CSR level from abnormal CSR level despite their opposite effects on firm value, we need to contemplate how to deliver information about CSR levels to market participants in a systematic way.

업사이클링 패션브랜드에 나타난 소재특성 연구 (제2보) -업사이클링 소재를 이용한 패션가방 제작-

이다혜 ( Dahye Lee ),정경희 ( Kyunghee Jung ),배수정 ( Soojeong Bae ) 한국의류학회 2019 한국의류학회지 Vol.43 No.1

This study is the 2nd report following『A Study on the Characteristics of Material in the Korean Up-cycling Fashion Brands (Part I)』that handled the development of upcycling props using the characteristics of upcycling material. The 2nd report analyzed product types and materials focusing on 21 foreign upcycling fashion brands. It analyzed the characteristics of upcycling fashion materials using the case analysis of coffee bean bag and waste denim based on external characteristics and internal characteristics. We then classified the external characteristics into environment/economic feasibility and availability/mixture and the internal characteristics into historicality/story and originality/scarcity. Five bags were designed and produced for the actual commercialization of fashion products based on such characteristics of materials, with the use of coffee bean bags and waste denim as upcycling materials. This study is differentiated from existing research by its suggestions for the utilization of fashion product upcycling coffee bean bags and waste denim. Also, upcycling fashion products could be competitive products in eco-friendliness and originality that can be a driving force for the sustainable development of fashion industry through the differentiation of existing fashion products.

전기자동차 실내 주행 사운드의 사용자 경험 디자인

이다혜(Dahye Lee),심혜린(Hye Rin Shim),최준호(Junho Choi) 한국콘텐츠학회 2016 한국콘텐츠학회논문지 Vol.16 No.2

최근 전기자동차와 관련된 콘텐츠 연구에서 사운드 디자인이 새로운 연구 주제로 부각되고 있다. 이 연구는 전기자동차 실내 주행음 디자인의 주요 가치들을 사용자 경험(User Experience) 측면에서 탐색하고 검증하는 것을 목적으로 진행되었다. 근거이론에 의한 탐색적 연구를 통해 맥락정보성과 정숙성을 독립변수로 도출하여 2x2 요인 설계로 유용성, 감성, 만족도에 대한 주효과 및 두 변인 간 상호작용 효과를 분석하였다. 실험연구를 통해 맥락정보성과 정숙성의 조합에 따라 전기 자동차의 사용자 경험에 미치는 영향이 달라진다는 점을 밝혔다. 연구 결과에 기반하여 실내 주행 사운드 가치의 개인별 선호를 고려한 사용자 니즈 최적화를 위한 후속 연구 방향을 제시하였다. Recently, the sound design of the electric vehicle has emerged as one of the new research objects. This study was conducted to explore and examine major values of interior driving sound of the electric vehicle from the perspective of user experience. An exploratory study based on the ground theory extracted contextual information and quietness as independent variables, and then we analyzed the main and interaction effects of those two variables on the usefulness, emotion, and satisfaction through a 2x2 factorial experimental design. The experimental study demonstrated that the effect on the user experience of electric vehicle can be conditioned by the combination of contextual information sound and quietness. Based on the results of this study, we suggested future research agendas for the optimization of user needs which reflect individual preference of interior driving sound values.

대전지역 성인 및 노인의 영양관리 요구도 조사 및 영양지원서비스의 효과 평가

이다혜(Lee, Dahye),전민선(Jeon, Minsun) 한국생활과학회 2022 한국생활과학회 학술대회 Vol.2022 No.11

우리나라 성인 소비자의 환경관심도에 따른 온라인 식품 구매 행동

이다혜(Lee, Dahye),이환서(Lee, Hwanseo),박나라(Park, nara),육홍선(Yook, Hong-Sun),전민선(Jeon, Min-Sun) 한국생활과학회 2021 한국생활과학회 학술대회 Vol.2021 No.11