건설현장의 추락 및 접촉사고 방지를 위한 스마트 세이프티 센서 개발

이주희,안요섭,Lee, Juhee,Ahn, Joseph 한국건설관리학회 2021 한국건설관리학회 논문집 Vol.22 No.1

한국산업안전보건공단의 산업재해통계 보고서 최근 4년 동안의 자료를 확인하면 2017년부터 2020년 6월까지 건설현장의 재해자 수가 약 93,158명, 사망자 수가 약 1,977명으로 건설업이 재해율 총 3위, 사망률 총 1위로 높은 안전사고 추이를 보이고 있다. 그 중에서도 전체 직업군에서 추락으로 인한 사망사고 및 접촉으로 인한 사망사고는 전체 사고 유형 중 3위 안으로 빈번하게 발생하는 안전사고이다. 본 논문은 건설현장의 다양한 유형의 안전사고 중 발생 비율이 가장 높은 추락과 접촉 사고 두 유형의 안전사고를 예방하기 위해 초음파 센서를 이용한 스마트 감지 장치를 개발하여 직접 현장 작업자가 경험하게 한 결과, 설문참여 작업자의 69.5%이상이 센서의 현장 적용성에 대해 긍정적으로 평가하였으며, 이를 토대로 건설업 안전사고의 전체 비율을 감소하는데 일조 하고자 한다. According to the Korea Occupational Safety and Health Agency's (KOSHA) report on industrial accident statistics over the past four years, the number of casualties at construction sites from 2017 to June 2020 was about 93,158 and the number of deaths was about 1,977, showing a high trend of safety accidents among the eight major occupational groups, with the construction industry ranking third in total and the death rate being the highest in total. Among them, the number of deaths caused by falls in the entire occupational category is about 1,267, the highest rate of deaths due to contact is about 522, which is a frequent safety accident among the top three accident types. This paper aims to help reduce the overall proportion of construction safety accidents by developing smart safety sensing devices using ultrasonic sensors to prevent two types of safety accidents, which have the highest rate of occurrence among various types of safety accidents occurring at construction sites.

영화 <반성의 탑>을 통해 본 총력전 시대 일본의 소년교호원 표상

이주희 이화여자대학교 이화인문과학원 2015 탈경계인문학 Vol.8 No.2

In 1933, the state’s concern with Japanese reformatories of juvenile delinquents changed with the enactment of “The Juvenile Education and Protection Law” (少年教護法). According to this legislation, reformatories were expected to function not only as asylums to punish and cure delinquency, but also as welfare facilities to support delinquents’ growth into self-reliant, responsible citizens. When we think of how these two aspects of reformatory were represented as cultural products, Shimizu Hiroshi’s film Introspection Tower (1941) gives us an interesting example. However, it is curious that the film’s depiction of delinquents is equivocal, probably because he intended to show them simply as socially disadvantaged children rather than as little fringers who needed to be isolated from the society. By doing so, Shimizu could reproduce the reformatory as an ideal institution of welfare run by the government. Moreover, in this film, the welfare state, represented by the reformatory of juvenile delinquents, employs the voluntary collaboration of members in the struggle for their lives in the reformatory, in order to approve war mobilization. By examining the last episode in which waterways are constructed by the children’s own hands, I argue that it could be interpreted as a metaphor for the war mobilization. In this episode, children’s labor is portrayed as a natural outcome of childhood innocence in enjoyment of physical activities. This representation of working children was to appear as well as Shimizu’s films in postwar period.

얽힘의 맞교환을 이용한 양자 비밀나눔 방식의 보안성

이주희,오성담 숙명여자대학교 자연과학연구소 2002 자연과학논문집 Vol.- No.13

Cabello가 제시한 얽힘의 맞교환(entanglement swapping)에 의한 양자 비밀 나눔(secret sharing)방식은 측정을 위한 특정 축이 필요 없고, 도청 확인을 하는데 합법적 사용자들(legal users)이 기존의 방식보다 적은 비트(bit)를 필요로 한다는 장점을 가지고 있다. Cabello는 그의 방식이 양자비밀 나눔과 키 분배가 동시에 일어날 수 있다고 주장했다. 그러나 우리는 2차원에서 부분적인 양자 키 분배가 이루어지고, 고차원에서는 양자 키 분배가 불가능하다는 것을 알 수 있었다. 보완성(security)을 검사하기 위해, 우리는 incoherent 도청 방식을 intercept-resend 도청방식과 man-in-the-middle 도청방식으로 나누고, 각 경우의 도청방식에서 도청이 인지되지 않을 확률들을 계산하였다. Quantum secret sharing scheme using entanglement swapping proposed by Cabello[1] has merits that do not have to select any specific axis for measurements and requires fewer bits for comparison among legal users to detect eavesdropping. He claimed that quantum secret sharing and quantum key distribution was possible simultaneously in his scheme, but we find that quantum key distribution is only partial in two dimension and impossible in the higher dimensions. To check security, we classify the intercept-resend attack and the man-in-the-middle attack in incoherent attacks, and then calculate the probability that eavesdropping is not detected for each attack.

표준어 정책에 대한 비판적 담화 연구: 기사에 달린 댓글을 중심으로

이주희(Lee, Juhee) 담화·인지언어학회 2023 담화와 인지 Vol.30 No.1

This study examines how current standard language policy is reinterpreted and appropriated at the language user level. We conduct discourse analysis based on texts by language users on the topic of standard language policy. To this end, Faircloughs dialecticalrelational approach is applied to analyze comments in articles criticizing state-led standard language policies. First, text analysis divides comments into six semantic categories: order, destruction, non-standard language, fluidity, reference materials, and discrimination, after which the semantic relations of the vocabulary used in the texts are analyzed. These texts discourse and sociocultural practices are then examined, confirming that in these texts standard language ideological discourse, which states that a standard language is essential for language life; language nationalistic discourse, which presupposes a nation-ethnic-language connection; and language democratic discourse, which advocates for the free language life of language users, appeared. It is demonstrated that the first two discourses constitute the reality in which non-standard language is considered a subject of correction, non-Korean languages are excluded, various languages and language users are distinguished, and language and language users not identified as meeting the criteria are excluded, while the last discourse can recognize linguistic diversity and fluidity. It is confirmed that this discourse can promote social practices that do not exclude minority languages and their speakers.

서로 다른 단면형상의 핀-휜형 방열판 최적설계

이주희(Juhee Lee),노상길(Sang-Kil Noh),오박균(Park-Kyoun Oh),임효재(Hyo-Jae Lim),박경우(Kyoungwoo Park) 대한설비공학회 2005 대한설비공학회 학술발표대회논문집 Vol.2005 No.6

가정용 공기 청정기의 PUI와 상호 작용이 브랜드 선호도와 재구매 의도에 미치는 영향에 대한 연구

이주희 ( Juhee Lee ),정석길 ( Sukgill Jung ) 한국산업디자이너협회(한국인더스트리얼디자인학회) 2019 산업디자인학연구 Vol.13 No.3

본 연구는 PUI를 효과적인 마케팅요소로 활용하기 위해 고려해야 하는 부분에 대한 통찰력을 제공하기 위해, 공기 청정기와 같이 비가시적인 요소의 서비스를 제공하는 제품에서 가정용 공기 청정기의 물리적 사용자 인터페이스 요소인 PUI(Physical User Interface)와 상호 작용 요소의 사용자 경험평가 향상이 브랜드 선호도, 재구매 의도와 어떤 상관관계가 성립되는지에 대해 분석하였다. 현실적인 면에서, 전문가가 아닌 이상 현대 소비자들이 첨단 기술 집약 제품을 구매하는 상황에서 제품에 대한 각종 데이터에 대해 정확한 이해를 바탕으로 구매를 결정하는 경우는 많지 않다. 특히, 공기 청정기처럼 비가시적인 형태의 기능을 제공하고, 실생활에 밀접하게 관련이 있는 경우 이전의 제품 경험을 통한 확장 과정에서 선호된 브랜드의 제품을 바탕으로 구매하는 경우가 다수이다. 이러한 배경을 바탕으로 본 연구에서는 가정용 공기 청정기의 PUI와 상호작용 요소를 중점으로 하여, 브랜드 선호도와 브랜드 재구매 의도의 관계를 시각적 경험을 통해 선호된 디자인 요소가 마케팅에 미치는 영향으로 정립하고자 하였다. 본 연구는 인문학적 질문을 포함하여 공기청정기의 PUI에 대한 만족도, 상호 작용 요소에 대한 만족도, 브랜드 선호도와 재구매 의도에 관한 총 4가지의 설문 문항을 통해 진행했다. 실증 분석 결과, 공기 청정기의 PUI와 상호작용 요소는 브랜드 선호도에 정의 영향을 미쳤고, 이로 인한 결과가 브랜드 재구매 의도까지 영향을 미치는 것으로 확인되었다. In order to provide insight into what to consider in order to utilize PUI as an effective marketing element, this study proposes a method of using PUI, which is a physical user interface element of home air purifier, and interactivity factors, which are correlated with brand preference and repurchase intention. In reality, it is not often that consumers decide to make purchases based on a precise understanding of the various data about the product when they buy high technology intensive products. Especially, when the air purifier is provided with an invisible form function and is closely related to the real life, there are many cases where the user purchases the product based on the preferred brand in the expansion process through the previous product experience. Based on this background, this study aims to establish the relationship between brand preference and brand repurchase intention as the effect of preferred design factors on marketing through visual experience, focusing on PUI and interaction factors of home air purifier. This study was conducted through four questionnaires on satisfaction of PUI, satisfaction of interaction factors, brand preference and repurchase intention of air purifier including humanistic questions. The empirical results show that the PUI and interaction factors of the air purifier have a positive effect on the brand preference, and the result shows that it influences the brand repurchase intention.

CFD를 이용한 고효율 사이클론의 유동해석

이주희(Juhee Lee),임효재(Hyo-Jae Lim),심성태(Sung-Tae Sim),박경우(Kyoungwoo Park) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11

산업계에서 기체와 고체를 분리하는 장치로서 사이클론은 지난 한 세기 동안 다양하게 사용되어 왔다. 그러나 설계를 위하여 사용하는 실험식은 최종적으로 만들어진 사이클론의 성능을 정확하게 예측하는 데에는 많은 어려움이 있다. 이 연구의 목적은 이러한 고효율 사이클론에 있어서 내부 유동의 특성을 파악을 통하여 성능을 정확하게 예측하는데 있다. 일반적으로 입구의 속도를 증가시키게 되면 분리효율은 증가하나 입력손실이 급격히 증가하게 된다. 정확한 성능의 예측은 사이클론의 운영에 중요한 역할을 한다. 사이클론 내부의 난동성분은 모든 방향으로 균일하지 않으며 랭킨와와 같은 형태의 방향성을 가지고 있다. 그러므로 이러한 유동을 정확하게 예측하기 위하여 RSM 모델을 사용하였다. 모델의 정확성을 검증하기 위하여 실험과 그 결과를 비교하였다. The gas-solids cyclone separator is a dust collection device that has been widely used in industry for more than a century. The currently used empirical models for the prediction of cyclone performance exhibit limited accuracy and generality. The purpose of this study is to extend the physical mechanism of the high efficiency cyclone. Generally, the increase of inlet velocity of gas improves the separation efficiency, while it results in increasing in the pressure losses nonlinearly. In this study, the RSM (Reynolds Stress Model) is employed since the RSM can only predict flow characteristics of Rankine vortex properly. The validation of CFD model is carried out by comparing with experimental results. The clean gas (air) without solids is considered as a media and the gas flow in the cyclone is investigated in detail.

학습성과기반 단계적 통합간호실습교육 매트릭스 개발

이주희(Lee, JuHee),이태화(Lee, Taewha),이현경(Lee, Hyunkyeong),김상희(Kim, Sanghee),배주연(Bae, Juyeon),한지희(Han, Jeehee),이경은(Lee, Kyongeun) 한국간호교육학회 2015 한국간호교육학회지 Vol.21 No.4

Purpose: The purpose of this study was to develop an integrated nursing practicum education matrix based on the learning outcomes of each stage. Methods: In this Delphi technique study, 10 experts, consisting of six professors and four nurses, participated in the development of the matrix. The first step was an in-depth review for the composition of the questionnaire and the second step was the Delphi technique. The Delphi survey was conducted two times in order to complete the components of the matrix. The survey data was analyzed for statistical averages and standard deviations to decide the order of priority. Results: According to each stage (i.e. fundamental stage, competent stage, and proficient stage), the matrix was composed of education contents, methods, evaluation methods, and curriculum outcomes. Conclusion: The integrated nursing practicum education matrix of Y University was completed. The developed matrix will result in a reduction in the gap between nursing education and clinical practice and an improvement in nursing competency.

한국어 문자메시지의 표기와 특성

이주희(Lee, Juhee),박선우(Park, Sunwoo) 한국음운론학회 2012 음성·음운·형태론 연구 Vol.18 No.1

The purpose of this study is to present the distinctive writing styles for text messages that were discussed by Crystal (2008) and examine the use of the languages in Korean text messages. For the data we collected, pictograms, abbreviations, omitted letters, and nonstandard spellings proved to be observable in Korean text messages. The frequency and types of emoticons were greater in English text messages than in Korean ones. Especially, pictograms, such as emoticons, acronyms, and punctuation marks were much more frequently used by females than by males. A difference by gender was also found in message length; generally, messages written by females were longer than those by males, and this result was also a statistically significant figure. The frequency and types of abbreviations were also greater in English messages than in Korean ones. Omitted letters appeared both in Korean and English text messages in various forms; some reflected the pronunciation of spoken languages, while others did not at all. Nonstandard spellings also appeared both in Korean and English text messages in various forms. Many of them reflected the pronunciation of spoken languages, while others did not at all. Especially, many of them were aimed at economical efficiency, while a number of them were for wordplays or unique expressions. To conclude, Korean text messages have both universal and individual characteristics. It is noteworthy that although many text messages contained languages against standard spelling, they were not incomprehensible. According to analysis of collected text messages, nonstandard spellings (syllables) were only 16.6%, which is not a worrying rate considering that 83.4% were in accordance with standard spelling. This result suggests that the public concern that spelling destruction in text messages in other languages as well as Korean has reached a serious level is rather exaggerated.

높은 솔리디티를 갖는 자이로밀의 공기역학적 특성

이주희(Juhee Lee),유영소(Young So Yoo) 대한기계학회 2011 大韓機械學會論文集B Vol.35 No.12

3 차원 비정상유동해석을 통하여 자이로밀의 공기역학적 특성을 고찰하였다. 일반적으로 소형자이로밀은 구조가 간단하고 솔리디티가 높아 제작이 쉽고 자구동(self-starting)이 가능하다는 장점을 가지고 있다. 그러나 TSR (tip speed ratio)가 4~7 인 다리우스풍력발전기와 다르게 1~3 정도로 매우 낮다. 본 연구에 사용한 자이로밀은 일정한 단면을 가진 3 개의 직선날개로 구성되어 있으며 솔리디티는 0.75 이다. 솔리디티가 매우 낮은 다리우스풍력발전기와 다르게 자이로밀은 TSR 이 증가함에 따라 날개 상호간의 간섭과 하류에 위치하는 날개로 유입되는 유동속도의 급격한 감소로 인하여 양력이 감소하고 날개의 회전속도에 의하여 주변의 공기가 가속되면서 항력의 증가로 성능이 저하되었다. 이로 인하여 TSR 이 2.4에서 최고의 성능을 나타내며 이후로 급격히 감소하는 것을 알 수 있었다. A 3-dimensional unsteady numerical analysis has been performed to evaluate the aerodynamic characteristics of a Giromill. Generally, the structure of a Giromill is simple and therefore easy to develop. In addition, the high solidity of the Gironmill helps improve the self-starting capacity at a low tip speed ratio (TSR). However, contrary to the Darrieus wind turbine which has a TSR of 4?7, a Giromill has a low TSR of 1?3. In this study, the aerodynamic characteristics of the Giromill are investigated using computational fluid dynamics (CFD). Three straight-bladed wings are used, and the solidity of the Giromill is 0.75. In contrast to a Darrieus wind turbine having low solidity, the Giromill shows a sudden decrease in the aerodynamic performance because of the interference between the wings and an increase in the drag on the wings in the downstream direction where wind flow is significantly reduced. Consequently, the aerodynamic performance decreased at a TSR value lower than 2.4.