• The Korean Journal of Ecology
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• 제25권6호
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• pp.371-377
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• 2002

Leaves of two-week old seedlings of tomato (Lycopersicon esculentum) were treated with various concentrations (0, 0.2 and 0.4 $\mu$g/1) of 2,4,5-trichlorobiphenyl (PCB-29) and subsequent growth of seedlings, symptoms of oxidative stress and activities of antioxidant enzymes were investigated. Compared with the non-treated control, foliar application of PCB-29 decreased both biomass and superoxide ($O_2$) radical production but increased hydrogen peroxide production and lipid peroxidation such as malondialdehyde (MDA) formation with increased activities of superoxide dismutase (SOD), ascorbate peroxidase (APX) and guaiacol peroxidase (GPX). Further studies on the isozymes of SOD, peroxidase (POD) and APX showed that all three isozymes of SOD such as Mn-SOD, Fe-SOD and Cu/Zn-SOD, two among four isozymes of POD and all three isozymes of APX were selectively increased in response to PCB. Therefore, we suggest that a possible cause for the reduction of seedling growth by PCB exposure is the oxidative stress including over production of hydrogen peroxide and the selective expression of specific isozymes of some antioxidant enzymes.

• 한국환경과학회지
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• 제14권7호
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• pp.629-637
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• 2005

Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) were investigated in soil and pine needle samples taken from 16 sites of industrial and residential areas in Changwon, Korea to assess their distribution levels and to suggest the influence of industrial activities, PCDDs/DFs levels in the soil samples ranged from 0.57 to 20.79 pg I-TEQ/g dry weight with a mean value of 4.20 pg I-TEQ/g dry weight. PCDDs/DFs levels in the pine needle samples ranged from 0.39 to 8.75 pg I-TEQ/g dry weight with a mean value of 4.09 pg I-TEQ/g dry weight. In both soil and pine needle samples, the PCDDs/DFs concentrations in the industrial area sites were higher than those in the residential area sites. Homologue profiles in pine needle samples showed different patterns compared with soil samples. Based on the results of principal component analysis (PCA), it was confirmed that pine needles reflected a direct influence from local potential sources of PCDDs/DFs, showing a much higher degree of reflection than in soils. Pine needles are very useful as an indicator for monitoring or estimating the contamination of PCDDs/DFs in other areas which have been impacted by point pollution sources.

• 한국직업건강간호학회지
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• 제31권4호
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• pp.178-186
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• 2022

Purpose: The purpose of this study is to identify the relationship between professional self-concept and job satisfaction of nurses working in long-term care hospitals and to consider strategies to improve these factors. Methods: Data were collected using structured questionnaires given to 135 nurses working at six long-term care hospitals in C City. The data were analyzed with SPSS 23.0 by descriptive statistics, Cronbach's α, t-test, one-way ANOVA, a Scheffé test, and with Pearson's correlation coefficient. Results: The average score for professional self-concept was 2.78 points (out of 4 points), and the average score for job satisfaction was 3.11 points (out of 5 points). Significant differences were found for professional self-concept according to age, marriage status, total work experience, number of patients per nurse, and position, while job satisfaction showed significant differences depending on age and the number of patients in the ward. Professional self-concept and job satisfaction showed a significant positive correlation (r=.46, p<.001). Conclusion: In long-term care hospitals, it is necessary to provide education programs about nursing practice, communication, and leadership to enhance the professional self-concept of nurses. With regard to job satisfaction for nurses, it is imperative to improve the work environment of long-term care hospitals.

• 가정∙방문간호학회지
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• 제30권2호
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• pp.183-193
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• 2023

Purpose: This study was aimed at identifying the factors influencing the practice of taegyo in pregnant women. Methods: A descriptive survey-based study design was used. The study included 210 married pregnant women aged 19 years or higher, excluding pregnant women from multicultural families, who attended the outpatient obstetrics and gynecology departments of a general hospital and a tertiary hospital in C City, from June 29, 2022, to September 8, 2022. Independent t-test, analysis of variance, and multiple regression analysis were used to determine the factors influencing the practice of taegyo. Results: The mean of the subjects' practice of taegyo was 3.49 ± 0.47. The factors influencing the practice of taegyo among pregnant women were perception of taegyo and spousal support. The higher the perceptions of taegyo and the greater the spousal support, the higher the practice of taegyo. The explanatory power of the regression model was approximately 49.2%. Conclusion: The factors influencing the practice of taegyo among pregnant women were confirmed to be the perception of taegyo followed by spousal support. The findings of the study confirmed that efforts to improve the perception of taegyo and spousal support are necessary to improve the adoption of the practice of taegyo among pregnant women.

• 한국초전도ㆍ저온공학회논문지
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• 제25권2호
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• pp.19-24
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• 2023

Recently, interest in renewable energy such as solar and wind power has increased as an alternative to fossil fuels. Renewable energy sources such as large wind farms require long-distance power transmission because they are located inland or offshore, far from the city where power is required. High-Temperature Superconducting (HTS) power cables have more than 5 times the transmission capacity and less than one-tenth the transmission loss compared to the existing cables of the same size, enabling large-capacity transmission at low voltage. For commercialization of HTS power cables, unmanned operation and long-distance cooling technology of several kilometers is essential, and pressure drop characteristic is important. The cryostat's spiral corrugation tube is easier to bend, but unlike the round tube, the pressure drop cannot be calculated using the Moody chart. In addition, it is more difficult to predict the pressure drop characteristics due to the irregular surface roughness of the binder wound around the cable core. In this paper, a CFD model of a spiral corrugation tube with a core was designed by referring to the water experiments from previous studies. In the four cases geometry, when the surface roughness of the core was 10mm, most errors were 15% and the maximum errors were 23%. These results will be used as a reference for the design of long-distance HTS power cables.

• 유통과학연구
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• 제5권2호
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• pp.5-16
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• 2007

본 연구의 목적은 소매업태 용어 통일화에 대해 알아보는 것이다. 이를 통해 소매 비즈니스 영역의 용어에 대한 혼란을 방지하고자 하였다. 또한 국내 소매업태의 적절하도록 용어정의에 대한 정리를 하고자 한다. 본 연구는 한국유통과학회 산하 유통학정의위원회 책임 하에 이루어졌다. 용어들은 백화점, 슈퍼마켓, 전문점, 편의점, 드럭스토어, 무점포 소매, 할인점, 쇼핑센터, 상점가, 시장과 함께 정의하였다.

• 마케팅과학연구
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• 제15권2호
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• pp.123-140
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• 2005

본 연구는 메가 이벤트 도입에 있어 지역주민들과의 갈등 원인과 거주민의 인구특성과의 관계 그리고 라이프스타일에 따른 주민들의 지각차이를 부정적 지각을 중심으로 도입저해 요인을 탐색하였다. 그 결과 자동차 경주 도입 거부요인으로 도시환경, 생활환경, 교육환경, 지역산업환경, 그리고 관광산업환경으로 나타났다. 이 중 교육환경과 도시환경이 가장 중요한 거부요인으로 밝혀졌다. 인구통계적 특성과 거주지 및 직장위치, 그리고 개인의 라이프스타일에 따라 자동차 경주 도입의 거부에 대한 지각이 다르게 나타났다. 또한 지역주민들이 우려하는 환경요인을 라이프스타일 유형에 따라 분석하여, 자아과다통제형, 자아탄력적통제형, 자아과소통제형에 따라 서로 상이한 지각이 행사됨을 밝혔다.

• 복식
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• 제56권5호
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• pp.75-88
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• 2006

The conception of uniform is changing from function and economical efficiency of the past to symbolism and aesthetic sense So, in such a management strategical point of view as enterprises' PR, scouting talent, organization revitalization etc, this is required to settle uniform culture which is proper to each enterprise and design development. The purpose of this thesis is, first, to study to help distribution enterprises' CI or PR by examining the present condition of uniform design in domestic fashion distribution enterprise and planning uniform design on the base of real case and finally making a real thing in person. Second is to suggest to fashion enterprise security of competitive ability of uniform-producing enterprise by developing article design of worth. Third is to present academic area with how to do design education in a wide range not based on trend article development. Following is how and what to study to carry out these purposes. Details about necessity and how and what to study are in an introduction, the conception of uniform in theory through precedential records examination in chapter 2, the present condition of uniform design based on Changwon city in chapter 3, planning uniform design and making a real thing suitable for F enterprise in chapter 4, and the conclusion is in chapter 5. Through this study, I became to know that uniform in distribution enterprise who treats visitors face to face is very important. I supply material and information concluded from this study to uniform industry and hope this will be helpful in developing uniform. It is significant in that this study as being related with enlarged uniform and enterprise, beyond such a uniform area as school uniform and hospital one, expanded the study range of clothing. I already tell you that this study is based on visual expression of uniform and wearer's feeling in clothes is not included.

• KIEAE Journal
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• 제16권6호
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• pp.95-101
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• 2016

Purpose: This study aims to identify the effect of temperature reduction by the application of cool roof coatings to Changwon City Hall in South Gyeongsang Province. The indoor and outdoor temperatures of the cool roofing building were analyzed and compared to that of an existing building with green-colored roof coated with waterproof polyurethane. Method: The surface temperatures and reflectivity of rooftops, surface temperatures of ceilings and the interior, and outdoor temperature and humidity of the two aforementioned buildings were measured from June to September in 2014. The measurements were taken every 10 min. Result: The surface temperature of the building with the cool roof was lower by a maximum of $9^{\circ}C$ with the reflectivity of the rooftop at an average of 0.55, which is higher than that of the building with green polyurethane by approximately 0.3. The temperature of the ceiling inside the building with the cool roof was about $1{\sim}2^{\circ}C$ lower than that of the ordinary building. Also, the indoor temperature of the office with cool roof coatings was about $0.5{\sim}1.0^{\circ}C$ lower than that of the office with green-colored roofing building. The results show that cool roof coatings can lower the temperature of buildings. In the next research, the reduction in consumption of energy for air conditioning will be investigated by utilizing building energy simulation tools.

• 한국조경학회지
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• 제43권1호
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• pp.54-68
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• 2015

본 연구는 근린공원에 대한 이용자의 공원지각환경이 건강증진인식에 미치는 영향을 분석하기 위해 경상남도 창원시의 8개 근린공원을 대상으로 공원별 현장조사 및 설문조사를 실시하였다. 연구결과에 따르면, 먼저 공원별 공원지각환경에서는 대부분의 공원이 집에서 공원까지의 거리와 집에서 공원까지의 길 환경이 높게 평가된 반면, 수공간과 공원 내 다양한 볼거리는 충분하지 못한 것으로 분석되었다. 다음으로 23개의 지각환경 변수들을 요인분석한 결과, 경관성, 안락성, 접근성, 활동성, 편의성, 쾌적성의 6개 요인으로 분류되었다. 이를 토대로 건강증진인식과 지각환경요인과의 관련성을 분석한 결과, 8개 공원 중 4개 공원에서 지각환경요인이 신체적 건강증진인식에 유의한 영향을 주는 것으로 나타났다. 특히, 접근성과 활동성이 3개의 공원에서 영향력이 있는 변수로 분석되었다. 또한, 심리적 건강증진인식의 경우, 8개 공원 중 5개 공원에서 유의한 영향을 주는 것으로 나타났으며, 접근성이 4개의 공원에서 영향력이 있는 변수로 평가되었다. 이상과 같은 결과들은 기존의 공원 환경을 개선하고, 새로운 공원을 조성하고자 할 때 효율적인 기초자료로 활용될 수 있을 것으로 판단된다.