• 대한가정학회지
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• 제29권3호
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• pp.227-246
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• 1991

The study examined work and family life of married women employed in a manufacturing industry. Data were gathered from the use of face-to-face interview method from a sample of 230 married working women. The major findings of this study can be summarized as follows: (1) Most of the respondents found the work repetitive and unappealing, with the double burden of a paid work and housework. Thus, it is necessary for the government to implement social policies for married working women, such as establishment of various child care centers, part-time jobs, and dissemination of egalitarian sex-role attitudes. (2) More than half of the respondents were born in rural areas and immigrated to the urban sectors, forming a nuclear family structure. Most of these women were married with love, but some of them could not have a marriage ceremony because of the economic reasons. Thus, it may be necessary to increase the service centers to offer a free marital ceremony. (3) About 30% of the respondents answered they left their preschool aged children unattended, after dismissing from a kindergarden on a private institution. It was shown that working women, even though they were in charge of child-rearing, did not have an effective mechanism to control or protect their children while they were away from home. Most of them frequently used material compensations from their children in order to make up their absence at home. (4) It was found that the strategy for working women to decrease a dual-role conflict is to make a hierachy on the work they to do and to do only basic housework for everyday life and to do the rest of work on a off-day.

• 한국환경복원기술학회지
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• 제15권2호
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• pp.137-147
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• 2012

GRS is an effective urban ecology restoration technique that can manage a variety of environmental functions such as ecological restoration, rainwater spill control and island heat effect from a low-impact development standpoint that can be utilized in new construction and retrofits. Recently, quantitative evaluation studies, both domestic and abroad, in the areas related to these functions, including near-earth surface climate phenomenon, heavy rainwater regulation, thermal environment of buildings, have been actively underway, and there is a trend to standardize in the form of technological standards. In particular, centered on the advanced European countries, studies of standardizing the specific insulation capability of buildings with green system that comprehensively includes the green roof, from the perspective of replacing the exterior materials of existing buildings, are in progress. The limitation of related studies in the difficulties associated with deriving results that reflect material characteristics of continuously evolving systems due in part to not having sufficiently considered the main components of green system, mechanisms of vegetation, soils. This study attempts to derive, through EnergyPlus, the effects that the vegetation-related indicators such as vegetation height, FCV, etc. have on building energy load, by interpreting vegetation and soil mechanisms through plant canopy model and using an ecological standard indicator LAI that represent the condition of plant growth. Through this, the interpretations that assume green roof system as simple heat insulation will be complemented and a more practical building energy performance evaluation method that reflects numerical methods for heat fluxes phenomena that occur between ecology restoration systems comprised of plants and soil and the ambient space.

• 한국전산구조공학회논문집
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• 제24권6호
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• pp.699-705
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• 2011

고기동 유도탄은 짧은 시간에 큰 추력을 필요로 하는 발사체이다. 유도탄의 비행에 필요한 추력을 얻기 위하여 고체 연료를 폭발적으로 연소시키면 고온, 고압의 연소 가스가 발생되고, 이 연소 가스를 초음속 노즐을 통하여 팽창시킴으로서 큰 추력을 얻게 된다. 로켓 모터의 작동 시간은 수초 미만에 지나지 않으나 큰 추력을 내기 위해 고온 고압의 연소 가스가 이용됨으로 평창 과정 중 시스템 부품의 파손 혹은 노즐목 부근에서 삭마현상이 발생되기도 한다. 즉, 탄의 정확한 제어를 위해서는 연소 가스와 벽면과의 열전달에 따른 열응력과 유동장 내의 압력의 변화에 따른 구조체 응력이 동시에 고려된 정확한 응력해석이 선행되어야만 한다. 본 논문에서는 예비 설계된 추력 발생장치에 고온 고압의 연소 가스가 유동할 때 모터의 작동시간에 따른 구조체의 안전성을 응력과 재료의 용융온도의 측면으로부터 구명하였다.

• 한국결정학회지
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• 제7권2호
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• pp.147-155
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• 1996

할로겐 램프를 열원으로 이용하는 결정성장장치인 부유대역융로를 제작하여 고온초전도체 Bi2Sr2CaCu2O8의 성장에 이용하였다. 제작된 결정성장장치는 할로겐 램프를 초점에 위치시키기 위한 holder unit, 1kW의 할로겐 램프로서 최대 1800℃까지 사용이 가능한 image furnace, 냉각장치, 원료 물질을 공급하는 feeding unit, 성장된 단결정을 인상하는 pulling unit, 그리고 2mm/hr - 40mm/hr의 속도로 상하 이동 및 15rpm -120rpm의 회전이 가능한 제어부 등으로 구성되었다. 300W의 할로겐 램프를 이용하여 Bi2Sr2CaCu2O8 fiber를 성장시켰으며 성장된 fiber는 XRD, SEM, EDS 등으로 분석하였다. 성장조건은 공기분위기에서 성장속도 3∼4mm/hr, 상·하부축 회전속도 20∼25 rpm이었으며 성장된 fiber는 Bi2Sr2CaCu2O8 기지 내에 (Sr,Ca)CuO2 및 (Sr,Ca)2CuO3의 2차상을 포함하고 있었다.

• Child Health Nursing Research
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• 제12권4호
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• pp.486-494
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• 2006

Purpose: This study was done to analyze children's play during hospitalization. Method: Data were collected from 36 play situations of hospitalized children, ages 2 to 6, hospitalized at 4 general hospitals, one in each city, Seoul, Suwon, Daejeon and Daegu. All observations were made in pediatric units during free-play periods. Each child was observed for 5 minutes at each observation and observed three times at each play session. Results: Of the children, 83.3% played on the bed. Play partners were mainly mothers. While 75.0% of children actively took part in play activity and 70.0% played with joy, 63.9% of play partners were more passive in the play. The most frequent play material was a small toy. The level of play was early stage of social and cognitive play, and dramatic play was observed in a few children over the age of 3 years. The play activities were conversional play, reflections of therapeutic procedures, imagination, and exploratory play. In the conversional play, children converted hospital equipments into play materials. Conclusion: It is recommended that health care team members should pay attention and actively participate in play of hospitalized children in order to help them have some control over the stress of the situation.

• 대한디지털의료영상학회논문지
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• 제11권2호
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• pp.85-92
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• 2009

This study, "The study about performance evaluations of mobile cover for X-ray's diffusion and distribution in mobile radiation" is based on the rules of mobile defense apparatus for radiation producer in 2006. To use the mobile cover for X-ray for diagnosis has been compulsory in common wards except operation rooms, emergency rooms and intensive care units. we have confirmed the effect in arbitrary shielding material after Qualitiy Control was carried out for accuracy in an experiment of mobile photographing equipment. The performance evaluation was conducted with the fabrics of selenium, 0.2 mmPb, 0.1 mmPb and aluminiums. Considering the result, we choosed 0.1 mmPb and attached cover to mobile photographing equipment. We have finished making the cover after drew up the draft to attach cover to mobile photographing equipment through the modeling and the structural analysis. the process of the study is that we assembled the manufactured structures and carried out the practical experiment to take the photograph after attaching the fabric of 0.1 mmPb to mobile photographing equipment. It is need of additional thesises hereafter that we compare the result between the part to improve for safety besides convenience in photographic experiment about clinical radiation and the effect of covering the diffusion in condition attached the cover.

• Elastomers and Composites
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• 제48권2호
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• pp.125-132
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• 2013

본 고에서는 카본블랙 및 다양한 유기화합물의 혼합에 의해 제조되는 카본 마스터배치의 제조를 위한 신규 엔지니어링 시스템에 대하여 논의하고자 한다. 자동차 타이어와 일상 생활용품에서 각종 산업용품의 소재로 사용되는 고분자 수지는 색상 및 물성 조절을 위하여 대부분 충전제를 사용하고 있으며, 충전제로 카본블랙 또는 실리카가 가장 널리 사용되고 있다. 국내 부품소재산업은 원재료의 배합 등 재료개발의 측면에서는 비약적인 발전을 이루어 냈다. 하지만 제품의 대량생산을 위해 필수적인 요소인 엔지니어링 기술분야는 더딘 기술발전과 높은 해외의존도로 인해 산업적 측면에서 빠르게 성장하지 못하고 있는 실정이다. 따라서, 본 고에서는 카본 마스터배치 생산을 위한 제조 시스템으로 최근 국내 기업에서 개발된 신규 엔지니어링 기술에 대한 소개를 하고자 한다.

• 한국방사선학회논문지
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• 제17권7호
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• pp.1075-1089
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• 2023

핵감식은 국제사회에서 핵물질 통제 및 핵비확산 검증에 필수적인 부분으로 인식되고 있다. 핵감식을 위한 연대추정은 붕괴계열 특성 및 베이트만 방정식을 기반으로 핵물질의 정제 및 생산시기를 추정한다. 연대추정을 위한 요소 중 붕괴상수와 핵종 수는 분석이나 반복 실험을 통해 도출된 통계로 불확도를 가지기 때문에 연대추정의 결과도 불확도를 가진다. 본 연구는 기존의 베이트만 방정식 기반의 연대추정 불확도 계산의 한계를 극복하기 위해 전산모사를 통한 불확도 계산 알고리즘을 연구하였다. 불확도 계산 결과 기존 불확도 계산 방법과 동등한 수준의 결과가 나타났으며, 기존의 한계를 극복하여 2세대 이상의 불확도 계산이 가능하였고 불확도 계산 중 붕괴상수의 과소평가도 개선되었다.

• 인터넷정보학회논문지
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• 제10권6호
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• pp.159-171
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• 2009

본 연구의 목적은 초등학교 교육과정에서 활용이 가능한 학습도구로서 프로그래밍이 가능한 로봇의 활용 방안을 알아보기 위함이다. 로봇은 다른 디지털 교구와는 달리 프로그래밍과 이를 통한 조작이 쉽다는 점에서 교수-학습목적의 차별화된 매체적인 특성을 갖는다. 이 연구에서는 초등학교 학생들에게 컴퓨터 프로그램의 핵심인 알고리즘을 가르치기 위한 도구로서 로봇게임프로젝트 개발을 통해 연구목적을 달성하고자 하였다. 본 연구에서 교구로 사용한 레고는 프로그래밍을 할 수 있는 환경을 갖추고 있으며, 중앙제어장치, 센서 및 모터세트를 기계적으로 조합하여 로봇을 만들 수 있다. 개발한 프로젝트는 학생들이 6차시 수업을 통해 3개의 과제를 해결하도록 하는 과정에서 이루어졌다. 이들 각각은 알고리즘의 기본적 원리들을 바탕으로 구성되었으며, 이 프로그램을 교실수업에 적용해 본 결과, 학생들이 상대적으로 학습의 즐거움을 경험하고 몰입의 효과가 나타났음을 알 수 있었다. 이러한 결과는 일반적인 초등학교 교실에서 직접 로봇을 조작하는 활동이 학교교육활동에 새로운 가능성을 가져올 수 있음을 보여준 것이라고 하겠다.

• 한방안이비인후피부과학회지
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• 제10권1호
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• pp.209-246
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• 1997

In the literatual study on the Ecthyma, the results were as follows. 1. The pathogenic factors of Ecthyma is divided three parts. One is exogenous pathogenic factors which including the wind evil, wind heat and toxic material produced by wetness evil. Another is endogenous pathogenic factors which including the declination of kidney-yang, impairment of the liver and kidney, the lower classes of yin-fire, accumulation of wetness-heat in the spleen asthenia, impairment of the liver and kidney, wetness-heat of three yang, asthenic heat-syndrome of three yin. The other is pathogenic factors neither endogenous nor exogenous which including the food and living, uncontrol sexual excess, anxiety and angry, injury of skin, injury of insects and animals. 2. Five viscera which was concerned with Ecthyma are liver, spleen and kidney. 3. Frequent region of Ecthyma are S-36(足三里) and C-7(陰交). External Ecthyma was rose to wetness-heat of three yang channel that cured easily. Internal Ecthyma was rose to asthenic heat-syndrome of three yin channel that cured hardly. 4. In the frequency of prescription, the most numerous prescription is Bojungikgitang(補中益氣湯) and the next are Kyukgigo(隔紙膏) and Yukmijihwanghwan(六味地滉丸). 5. In the frequency of medicine, the most medicine is Calomelas(輕粉) which included Hydrargyrum(水銀) and the next are Olibanum(乳香) and Resina Commiphorae Myrrhae(沒藥) which regulating vital energy and pain control medicine used that in order to destroy insects and remove polson. 6. In classification of the medical action, medicine of clearing away summer-heat and heat evil and activating blood circulation to dissipate blood stasis used to be very busy which in order to remove the disorder of vital energy for virulent heat-evil. 7. In classification of four characters, the most part is warm medicine, the next are cold and cool medicine and there is a few that is hot medicine. 8. In classification of five tastes, the most numerous tastes are bitter and acrid, the next are sweet, salty and sour tastes. 9. In classification of virulence of medicine, the most part is non-toxic, the next are weakly and deadly poison. 10. In classification of channel distribution, the most is the medicine that belongs to liver channel, the next are the lung, spleen, stomach and kidney channel.