동해 울릉분지 퇴적물에서 망간산화물과 철산화물 환원율 추정

최유정,김동선,이태희,이창복,Choi, Yu-Jeong,Kim, Dong-Seon,Lee, Tae-Hee,Lee, Chang-Bok 한국해양학회 2009 바다 Vol.14 No.3

동해 울릉분지에서 망간산화물과 철산화물의 유기물 분해 기여율을 정량화하기 위하여 6개의 박스형 시추퇴적물을 채집하였다. 수심이 2,000 m 이상인 울릉분지 표층퇴적물에서 유기탄소 함량은 2.6% 가량으로 육상기원 유기물 유입이 많은 흑해와 용승 해역인 칠레 주변해역들과 비슷했다. 울릉분지에 위치한 정점들에서 망간산화물 함량은 퇴적물 최상부에서 2% 이상으로 매우 높았고, 철산화물 함량은 울릉분지 표층 $1{\sim}4cm$ 내외에서 2% 가량의 최고값을 나타냈다. 그러나 대륙사면 정점들에서 망간산화물과 철산화물 함량은 분지처럼 높은 값을 보이지 않았다. 동해 울릉분지에서 2% 이상으로 높은 망간산화물 함량은 높은 유기탄소 함량과 사면보다 비교적 느린 퇴적속도 때문이거나 망간 이온이 저탁류를 통해 사면에서 분지로 이동한 것으로 예상된다. 망간산화물 환원율은 $0.3{\sim}0.57\;mmol\;m^{-2}\;day^{-1}$의 범위를 보였고, 철산화물 환원율은 $0.10{\sim}0.24\;mmol\;m^{-2}\;day^{-1}$의 범위를 나타냈다. 울릉분지에서 금속산화물은 유기물 분해에 $13{\sim}26%$ 정도를 차지하였으며, 이는 칠레 용승 해역과 유사하고, 덴마크 연안보다 낮은 값이다. In order to determine organic carbon oxidation by manganese and iron oxides, six core sediments were obtained in slope and basin sediments of Ulleung Basin in East Sea. The basin sediments show high organic carbon contents (>2%) at the water depths deeper than 2,000 m; this is rare for deep-sea sediments, except for those of the Black Sea and Chilean upwelling regions. In the Ullleung Basin, the surface sediments were extremely enriched by Manganese oxides with more than 2%. Maximum contents of Fe oxides were found at the depth of $1{\sim}4cm$ in basin sediments. However, the high level of Mn and Fe oxides was not observed in slope sediment. Surface manganese enrichments (>2%) in Ulleung Basin may be explained by two possible mechanisms: high organic carbon contents and optimum sedimentation rates and sufficient supply of dissolved Manganese from slope to the deep basin. Reduction rates of iron and manganese oxides ranged from 0.10 to $0.24\;mmol\;m^{-2}day^{-1}$ and from 0.30 to $0.57\;mmol\;m^{-2}day^{-1}$, respectively. In Ulleung Basin sediments, $13{\sim}26%$ of organic carbon oxidation may be linked to the reduction of iron and manganese oxides. Reduction rates of metal oxides were comparable to those of Chilean upwelling regions, and lower than those of Danish coastal sediments.

경남지역에서 발생한 가금티푸스의 역학적 특성 및 진단방법에 대한 비교 시험

최유정 ( You Jeong Choi ),김도경 ( Do Kyung Kim ),김용환 ( Young Hwan Kim ) 한국가축위생학회 2000 韓國家畜衛生學會誌 Vol.23 No.4

An epidemiological survey was conducted to investigate fowl typhoid outbreaks in Kyungnam province of Korea. The causative agent, salmonella gallinarum was isolated from 68 chicken samples of tentatively diagnosed fowl typhoid cases occurred during the period from January 1996 to September 1999. Comparative studies were also carried out to evaluate the diagnostic methods for detection of S gallinarum The results obtained were as follows; 1. Of the 68 cases of tentatively diagnosed fowl typhoid, 56 (82%) cases were determined as fowl typhoid by biochemical test and pathological findings. The other 12 (18%) cases were determined as paratyphoid. 2. Fowl typhoid outbreaks occur continuously all seasons in the year, however the incidence was remarkably increased from May to September. 3. The frequency of incidence of fowl typhoid in terms of regional distribution was relatively high in egg-laying hens facilities, and the mode of transmission is likely to be either egg-to-egg or lateral transfer by wild birds or rats. 4. All of 18 isolates from 56 cases were identified as S gallinarum by biochemical and serological test. 5. Antimicrobial drug susceptibility test against 18 isolates showed that the isolates were highly susceptible to AM, CZ, CF and GM (above 90%), whereas those strains were 100% resistant to EM, NA and PC. 6. S gallinarwn ribS gene was targeted to be amplified by PCR for comparative detection of S gallinarum in the experimentally infected chickens. The amplified 720bp DNA fragment, which is specific in D serogroup strains of S enterica subspecies was confirmed by agarose gel electrophoresis. 7. A comparison made between fecal culture and PCR-method revealed that later-method was relatively higher in detection rate than that of former method for S gallincin,trn 8. Comparison of currently applied methods, rapid serum agglutination test (RST) and microplate agglutination test (MAT), with experimentally infected chickens were made to evaluate sensitivity of detection by neutralizing antibody titration. Both methods detected neutralizing antibodies from the challenged chickens of 5 day post infection. However, positive reactions were determined after 7 and 9 days post infection by MAT and RST, respectively.

기업의 국제화가 회계이익의 지속성에 미치는 효과 분석

최유정(Yu-Jeong Choi) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.1

본 연구에서는 기업의 국제화 수준을 개별 기업의 매출액 대비 해외매출비중(FSTS)으로 측정하고 Sloan(1996)의 모형을 활용 당기순이익과 차기순이익 간의 1차 자기상관관계를 회계이익 지속성의 대용치로 사용하여 기업의 이익지속성에 영향을 미치는 다수의 통제변수들과 함께 실증분석을 실시하였다. 2011년부터 2016년까지 유가증권 시장에 상장된 12월 말 결산법인을 대상으로 고정효과모형을 이용하여 실증분석을 실시한 결과, 기업의 국제화와 회계이익의 지속성은 1% 유의수준에서 양(+)의 효과를 나타내어 개별 기업의 국제화 수준이 증가할수록 기업의 이익 지속성 또한 증가하는 것을 확인 할 수 있었다. 또한 기업규모, 재무건전성, 현금 수반성, 성장성, 투자성은 예측과 일치하게 국제화와 통계적으로 유의한 양(+)의 관계를 나타내어 이들이 기업 이익의 지속성을 증진하는데 중요한 보완적 요인임을 검증하였다. 이는 기업의 규모가 크고 재무건전성 및 현금 수반성이 우수할수록, 성장기회와 투자성향이 높을수록 기업의 이익지속성이 증가함을 의미하여 기존 선행연구들의 결과와도 일치하였다. 이러한 결과는 기업이 국제화 전략 추진을 통해 새로운 해외 시장을 확보하고 성장을 도모함으로서 기업 가치를 안정적으로 유지 · 확장시킬 수 있음을 시사한다. In this study, a firm"s internationalization level was measured as the ratio of foreign sales to total sales (FSTS) of individual firms. A demonstration was conducted with several control variables that affect the persistence of the firm"s profits using the Sloan (1996) model as a proxy for its primary relationship between net profit and the next profit. An empirical analysis of the end-December settlement firms listed on the securities market from 2011 to 2016 was conducted using a fixed-effect model to confirm that the persistence of the firm"s internationalization and accounting profits was positive at the 1% significant level, indicating that the persistence of the firm"s profits also increased as the level of individual firm"s internationalization increased. In addition, the firm size, financial soundness, cash accompanying, growth, and investment ability, consistent with forecasts, represented a statistically significant (+) relationship with globalization. These results suggest that firms can maintain and expand their value stably by securing new overseas markets and promoting growth by implementing internationalization strategies.

UL 268 비화재보실험에 따른 화재감지기 및 실내 공기질 측정 인자의 응답특성에 관한 연구

최유정(Yoo-Jeong Choi),최수길(Su-Gil Choi),남영재(Yeong-Jae Nam),유재현(Jae-Hyeon Yu),황의홍(Euy-Hong Hwang),이성은(Sung-Eun Lee),김시국(Si-Kuk Kim) 한국화재소방학회 2021 한국화재소방학회논문지 Vol.35 No.1

본 논문은 UL 268 비화재보실험에 따른 화재감지기 및 실내 공기질 측정 인자의 응답특성에 관한 연구이다. 2020년에 새롭게 도입된 미국 UL 268 Cooking nuisance test를 통해 화재감지기의 응답특성을 확인하였으며, 시험 내 연기농도는 최대 7.8 %/m로 나타났다. 연기감지기의 부작동(5 %/m) 및 1종 작동(7.5 %/m), 시험시간 내 측정된 연기 최대농도(7.8 %/m)에 매칭된 실내 공기질 측정 인자들의 응답특성을 분석하여 비화재보방지에 적용 가능한 인자를 도출하였다. 미세먼지센서(PMS)의 PM 1.0, PM 2.5, PM 10, 연소가스분석기(CGA)의 NO, SO2, 가스분석기(GA)의 CO,CO2, HCHO에서 변화량을 확인하였다. 특히 본 실험에서 측정된 가장 적응성이 우수한 인자로는 PM 2.5 및 PM 10으로 비화재보 방지 인자로 활용이 가능할 것으로 생각된다. The response characteristics of fire detectors and indoor air quality measurement factors were studied according to theUL 268 cooking nuisance test. The response characteristics of the fire detector were confirmed through the U.S. UL 268cooking nuisance test, newly introduced in 2020; the smoke concentration in the test was found to be a maximum of 7.8 %/m. The response characteristics of the indoor air quality measurement factors matched to the smoke detector s concentrationin the nonoperation test (5 %/m), type 1 smoke detector s concentration in the operation test (7.5 %/m), and maximumsmoke concentration (7.8 %/m) measured in the test were analyzed to derive factors applicable to avoiding unwanted firealarms. In this test, the variation was confirmed at PM 1.0, PM 2.5, and PM 10 of the fine dust sensor, for NO and SO2for the combustion gas analyzer, and for CO, CO2, and HCHO for the gas analyzer. In particular, the most-adaptable factorsmeasured in this experiment were PM 2.5 and PM 10, which can be utilized as unwanted-alarm factors.

UL 268 폴리우레탄폼 실화재실험을 통한 화재감지인자 도출에 관한 연구

최유정(Yoo-Jeong Choi),최수길(Su-Gil Choi),남영재(Yeong-Jae Nam),김시국(Si-Kuk Kim) 한국화재소방학회 2021 한국화재소방학회논문지 Vol.35 No.1

본 논문은 폴리우레탄폼 화재 시 발생하는 흑색연기로 인한 화재감지 적응성을 확인하고 연소생성물의 변화량을비교·분석하여 화재감지인자를 도출하기 위한 연구이다. UL 268 폴리우레탄폼 실화재 시험기준을 활용하여 화재감지인자 도출을 위한 실험을 진행하였으며, 미세먼지센서(PMS), 연소가스분석기(CGA) 및 가스분석기(GA)를 이용하여 연소생성물을 측정하였다. 실험 결과, 흑색연기 발생 시 기존 화재감지기의 적응성이 저하되는 것을 확인하였으며, 연소생성물 측정값을 통해 화재감지인자를 도출할 수 있었다. 특히, 측정되는 인자들 중 적응성이 가장 뛰어난연소생성물은 PM 2.5, PM 10, NO 및 CO로 기존 화재감지기와 병행측정을 통해 화재감지인자로 활용 시 신뢰성이향상될 것으로 생각된다. This study focused on fire detection factors by confirming the adaptation level of fire detection due to black smokegenerated in the case of polyurethane foam fire, and it compared and analyzed the change in combustion products. Anexperiment was conducted to derive fire detection factors using the UL 268 polyurethane foam real fire test standard. Combustion products were measured using a particulate matter sensor (PMS), combustion gas analyzer (CGA), and gasanalyzer (GA). As a result of the experiment, it was confirmed that the adaptability of the existing fire detector deterioratedwhen black smoke was generated. The fire detection factor was derived using the measured values of combustion products. In particular, among the measured factors, the most adaptable combustion products were found to be PM 2.5, PM 10, NO,and CO. They were considered to improve reliability when used as fire detection factors, as compared to existing firedetectors.

사상방을 활용한 임신 중 구眼(안)괘斜(사) 치험 4례

최유정 ( Yu Jeong Choi ),전수형 ( Soo Hyung Jeon ),이인선 ( In Seon Lee ) 대한한방부인과학회 2014 大韓韓方婦人科學會誌 Vol.27 No.1

This study was aimed to report the effect of oriental treatment onBell`s palsy during pregnancy with Sasang Constitutional method. Methods: 4 patients who had Bell`s palsy during pregnancy were treated withSasang constitutional prescriptions. After treatments we evaluated the effects byHouse-Brackmann facial nerve grading system. Results: As a result, the clinical symptoms of Bell`s palsy during pregnancywere improved. Conclusions: This case studies show that Sasang constitutional method canbe effectively used on Bell`s palsy during pregnancy. Especially the diagnostic resultsby using Diagnosis System of Oriental Medicine (DSOM) revealed that some ofpatients were in a very weak condition. We could apply these results to chooseprescription and get good therapeutic effects.

커뮤니티 활성화를 위한 대학도서관 오픈스페이스 공간계획에 관한 연구

최유정(Choi, You-Jeong),윤동식(Yoon, Dong-Sik) 한국실내디자인학회 2018 한국실내디자인학회 학술대회논문집 Vol.20 No.1

The university library is an institution that supports the education and research activities of its members through its intrinsic functions of growth, development and collection, processing and provision of information materials. Recently, the function of university libraries has expanded beyond the capabilities of libraries to include services and complex cultural facilities. However, since the 2000s, the use of libraries has been reduced due to the digital use of the library data and the digitalization of the library data due to the increase of smart media replacing books along with the development of IT. Accordingly, there should be a need for community space in the university library where students can share their materials and information and acquire new knowledge. Therefore, this study is designed to show the importance of community space through analysis of domestic and external space and faithfully perform the role and function of university library after examining the functions and current changes of the university library.

유리드믹스와 음악교육 프로그램이 유아의 일상적 스트레스와 유치원 적응에 미치는 영향

최유정 ( You Jeong Choi ) 한국달크로즈유리드믹스학회 2008 종합예술과 음악학회지 Vol.2 No.1

고도로 산업화된 현대사회에서는 생활상의 편의와 풍요로운 물리적 환경 등의 혜택을 받을 수는 있었지만 다른 한편으로는 사회적 기준과 인간관계의 급격한 변화로 인해 성인 뿐 아니라 유아들까지도 여러 가지 스트레스원에 노출되게 되었다. 스트레스는 유아의 정서적, 신체적, 사회적 성장에 부정적 영향을 주는데 소아과 의사들에 따르면 병원을 찾는 유아 환자 4명 중 한 명은 스트레스에 따르는 문제를 가진다고 한다. 그 예로 우리 주변에서도 어린이 비만 환자가 급격하게 늘어나고 있으며 학습 장애나 정서불안이 아닌데도 여러 가지 문제 행동을 보여 유치원에 적응하지 못하고 특수교육기관에 보내지고 있는 어린이가 늘고 있는 실정이다 (김지연, 2004). 만약 유아에게 스트레스에 대처할 수 있는 좋은 교육내용과 환경을 제공해 준다면 그 유아는 스트레스에 보다 효과적으로 대처 할 수 있게 되리라는 것을 짐작할 수 있다. 이와 같이 스트레스에 대처하는 교육내용의 한 가지 방법으로 음악을 들 수 있다. 음악은 자신의 다양한 감정을 느끼는 매개체가 되며 욕구나 감정의 상태를 몸짓, 표정, 언어로 표현하는 행위를 효과적으로 할 수 있기 때문에 유아의 정서 상태를 긍정적으로 변화시킬 수 있는 독특한 수단이 될 수 있다. 이러한 음악이 유아의 일상적 스트레스의 부정적인 영향을 중화시키는 완충의 역할을 해 줄 수 있다면 유아는 스트레스로 야기된 문제행동으로 인한 추가적인 스트레스를 예방해 줄 수 있을 뿐만 아니라 유치원 적응에도 도움이 될 수 있으리라 본다. 음악이 정서에 영향을 미친다는 연구는 이미 많이 보고되었고 그 효과들을 입증하는 여러 연구들이 나왔지만 음악과 유아의 스트레스, 그리고 유치원 적응을 직접 다룬 연구는 아직 미흡하다. 따라서 본 연구에서는 포괄적인 음악교육방법으로서의 유리드믹스 음악교육방법이 유아의 일상적 스트레스와 유치원 적응에 어떤 영향을 미치는지 알아보고 유아의 일상적 스트레스와 유치원 적응과의 관계도 살펴보려 한다. Considering the fact that preschooler show stress behaviors and preschool maladjustment behaviors due to large exposure to daily stress in this highly industrialized modern society, this study was carried out in order to find out if the eurythmics music education that focuses on rhythm and motion has positive effect on daily stress and preschool adaptation. According to the purpose of the study, the following questions were created. 1. What effect does the eurythmics music program have on preschoolers` daily stress? 2. What effect does the eurythmics music program have on the levels of school adaptation? 3. What correlation is there between daily stress and levels of school adaptation? The study was executed with 42 five-year-old children in preschools located in Seoul. In order to analyze the daily stress of the children, the study used the KPDSS(Korean Preschool Daily Stress Scale) developed by Hyeon-Gyeong Yeom(1998) and in order to examine the children`s preschool adaptation, the study used the PAQ(Preschool Adjustment Questionnaire) that was developed by Jewsuwan, Luster and Kostelink(1993) and translated by Hye-Su Kim(1995). The eurythmics music education was carried out 12 times with rhythm and motion, which are thought to be effective for stress relief. As for the data analysis, the study produced an average and a standard deviation of each group using the SPSS 12.0 in order to verify the difference in the children`s stress and preschool adjustment level, and the difference was verified with the t-test. Also, the Pearson`s correlation analysis was executed in order to find out the correlation between daily stress and preschool adaptation. The followings are the summarized results of the analyses. First, the eurythmics music education is more effective for daily stress relief of young children than the ordinary music education in preschools. Second, the ordinary music education of preschools also has positive effect on preschool adaptation of young children but the eurythmics music education have more positive effect on preschool adaptation. Third, the study showed that there was a negative correlation between daily stress and preschool adaptation. In conclusion, the eurythmics music education that focuses on motion and rhythm has positive effect on daily stress and preschool adaptation and also, there is a negative correlation between daily stress and preschool adaptation.

다세대 사회계층이동 연구의 필요성에 대한 시론

최유정 ( Yu Jung Choi ),주혜정 ( Hyae Jeong Joo ),최샛별 ( Setbyol Choi ) 국민대학교 사회과학연구소 2021 社會科學硏究 Vol.33 No.2

본 논문은 세대간 사회계층이동에 대한 국내 연구의 흐름을 짚어보면서 서구의 연구 동향을 참조하여 향후 관련 연구가 지향해야 할 방향성을 모색해보려는 목표에서 출발하였다. 구체적으로는 지금까지 국내에서 진행된 세대간 사회계층이동에 대한 연구들과 그 결과, 서구의 새로운 동향이라 할 수 있는 다세대간 계층이동 연구의 흐름을 살펴보았으며, 이를 통해 한국사회에 다세대 연구 모형의 도입 필요성을 제기하고, 3세대 연구에서 세대간 계층이동의 메커니즘으로 검증되거나 제안되었던 요소들을 정리하는 작업을 수행하였다. 서구의 3세대 연구들은 주로 사회제도나 영속적, 비영속적 자원의 직접적 전달, 누적된 이익과 불이익, 조부모나 선조로부터의 지연된 영향력, 다른 구조적 불평등과의 상호작용, 기타 부모의 부재 및 인구학적, 생물학적 과정에 대한 조부모의 영향력 등에 주목해왔으며, 이외에도 사회나 국가에 따른 차이, 가족이 속한 계층적 지위, 젠더에 따른 차이들을 중요하게 고려해야 한다고 보았다. 따라서 여전히 2세대 중심적으로 구조화되어 있는 우리의 사회계층이동 모델 또한 이러한 점들을 충분히 반영하는 다세대 모형으로 확장, 발전되어 나가야 한다고 본다. 또한 여기에 새로운 세대 모형을 경험적으로 검증할 수 있는 광범위한 양적, 질적 데이터의 생산과 축적, 그리고 그에 대한 실증적인 분석이 함께 병행되어야 할 것이다. 이러한 적극적인 노력을 통해 미국과 유럽 등 서구권에 편중되어 주로 양적 데이터에 의존해온 기존의 다세대 사회이동 연구의 불균형성을 해소하는데 기여하고, 국내 관련 연구의 흐름에 있어서도 중요한 도약점을 마련할 수 있으리라 기대한다. This paper started with the aim to seek a direction that intergenerational social mobility studies should pursue in the future by referring to Western research trends while exploring related works in South Korea. Specifically, we examined intergenerational mobility studies conducted in South Korea and their findings and the current flow of multigenerational mobility studies as a new research trend in Western academia. Based on this review, we raised the need to introduce a multigenerational mobility model into South Korean society and carried out a task of organizing various intergenerational mobility mechanisms addressed in three-generation studies. Three-generation studies in Western society have mainly focused on social institutions, a direct transfer of perishable and durable resources, cumulative advantages and disadvantages, lagged or delayed effects from ancestors including grandparents, interactions with structural inequalities, and other grandparent influences in case of absence of parents and demographic and biological processes. They also have pointed out that it was important to take account of heterogeneity in multigenerational influences due to social and national differences, social class of the family, and gender. Thus, we argue that our two-generational mobility model needs to expand and develop into a multigenerational model that fully reflects the aforementioned points. Furthermore, extensive data production and accumulation of both quantitative and qualitative information, which enables empirical testing of the new model, is needed along with actual empirical analyses. This active effort would contribute to resolving the imbalance in existing multigenerational mobility studies, which have largely been dependent on quantitative data analysis and skewed toward Western contexts such as the U.S. and Europe. It is also expected to provide an important leap in related research areas in South Korea.

커뮤니티 활성화를 위한 공공도서관의 복합화 계획에 관한 연구

최유정(Choi, You-Jeong),윤동식(Yoon, Dong-Sik) 한국실내디자인학회 2020 한국실내디자인학회논문집 Vol.29 No.1

(background and purpose) The current library has been established as a complex cultural space accessible from the living space and communicates with residents through various composite programs, including learning and education. In addition, libraries become one of the most required spaces for users as public spaces for cities and are written as value creation, a new space for community centers that connect regions and people, not books. All people should be activated through the combination of facilities to enable the use of public libraries freely. For this purpose, identify the definition and function of the composite public library and analyze the type and spatial composition for the effective synthesis of public libraries. (Method) This study aims to identify the characteristics of the combined library by analyzing the characteristics of the spatial arrangement and the changes in the spatial composition of the complex facilities for the library, and drawing out and analyzing the types and types of spatial composition. (Conclusion) The combination of public libraries showed that the portion of data facilities and user facilities decreased and the proportion of public facilities and management facilities increased relatively. The horizontal analysis of complex types showed many examples of integral and monolithic, and the vertical analysis showed many of the lower layers being laid out and formed horizontal expansion with the outside. Finally, the spatial composition revealed much of the central diffusion patterns spreading in the lobby. Therefore, it is hoped that the analysis results of this study will be used as basic data in future plans.