• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2010년도 춘계학술대회 논문집
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• pp.35-35
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• 2010

This paper illustrates the use of electric field computation to optimize the design of high voltage composite bushing. In the bushing, a high electric stress occurred between field shaper and central conductor by the closely space. Also coaxial cylindrical shield has a great height along the axis to control an electric field. Consequently, all the potentials are raised axially along the field shaper and electric stress is concentrated on a part of the surface of the FRP tube near the upper end of the field shaper. Maxwell 2D simulator based on the boundary element method was also introduced in order to verify the reliability of the polymer bushing. The optimized design uses internal elements for electric stress grading at critical parts of the bushing.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 추계학술대회 논문집 Vol.21
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• pp.369-370
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• 2008

This paper describes the electric field distribution of high voltage polymer bushing with inner field shaper designs. The field control can be achieved by means of the designs of such internal field shaper. But high electric stress occurred between field shaper and central conductor by the closely space. In accordance, the floating and ring shield designs was importance for electric stress grading at critical parts of the bushing. The bushing has a central conductor, and internal ring shield or floating shield, gaps are formed between field shaper and ring shield. Accordance equipotential lines extend through gaps. Maxwell 2D simulator based on the boundary element method was also introduced in order to verify the reliability of the polymer bushing.

• 복식
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• 제19권
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• pp.105-125
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• 1992

The research, aiming an automatic pattern design of Korean Costume by utilizing CAD system, tried Grading, Seaming and Marking with a theme of girl's color-strip blouse & skirt. The content & conclusion of the research can be outlined as follows; 1) As we reviewed the current situation of Korean costume which becomes more likely celebrational or festival costume, while the demand of it is getting increase, it's being dealt mostly as ready-made dresses with different qualities & designs. Especially childrens ready-made ones were highly demanded to be picked up as the theme. 2) For the original drawing of children's color-strip blouse & skirt, Kyung-Ja Park's drawing method was used here, and for the substitute of particular body parts absolute size, Joo-Won Lee's standard size chart from a size-study by ages. 3) To work with CAD system we had input master pattern, drawn for age 5 as basic size, then graded six step-sizes for 1-11 years old. For add-subtract of particular body parts size, we graded through computing the standard variation among items to get the pattern developed into ready-made standard size, we can make precise plotting by grading wanted size very rapidly if we correct the rule of changed items different from standard size to make utilization possible enough with easy order method of ready-made Korean Dress. 4) We produced Marker after attaching a margin to seam accordingly by parts for each pattern using P/D/S to mark, In mass gament-cutting, the loss of time and material can minimized. In this research the apparel CAD system which has been utilized and only be western fashion industry was introduced for the design of ready-made Korean costume and utilized it in Grading, Marking which are critical steps to improve productivity and have reported the result in the research. Thus we expect that less cost, improved productivity and better quality with minimized loss of material from marking as well as from prompt and precise size-drawing. Furthermore the utilization of CAD system is considered as an effective one in terms of the research & the development to remove effective one in terms of the research & the development to remove irrational elements in the design and production process of Korean costume as well as in terms of the study of Korean Costume development through creative works of Korean Costume.

• Asian Pacific Journal of Cancer Prevention
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• 제13권7호
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• pp.3187-3190
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• 2012

This study evaluated the relationship between pretreatment hemoglobin (Hb) and prognostic factors in Thai patients with endometrial cancer. Medical records of 228 patients who had undergone surgery between January 2005 and December 2007 were retrospectively reviewed. Associations between clinicopathological variables and pretreatment Hb levels were described using Pearson's chi square test or two-tailed Fisher's exact test. Survival analysis was performed with Kaplan-Meier estimates. Univariate and Cox-regression models were used to evaluate the prognostic impact of various factors, including Hb levels, in term of disease-free survival. The median duration of follow-up was 38.2 months. Eighty-nine patients (39%) had a preoperative Hb level of <12 g/dL, these having significantly higher rates of non-endometrioid histology, advanced FIGO stage, lymphovascular space invasion, cervical involvement, adnexal involvement, positive peritoneal cytology, and lymph node involvement than patients with Hb ${\geq}12$ g/dL. The 5-year disease-free and overall survival were significantly lower in patients with pretreatment Hb levels <12 g/dL compared with those with Hb ${\geq}12$ g/dL (79.3% vs. 89.2%, p=0.044 and 87.6% vs. 99.3%, p<0.001, respectively). In the multivariate analysis only histology, myometrial invasion, and lymphovascular invasion proved to be independent prognostic factors, whereas tumor grading, stage, cervical involvement, adnexal involvement, positive peritoneal cytology, lymph node involvement, and low Hb were not. In conclusion, presence of anemia before treatment may reflect poor prognostic factors in patients with endometrial cancer and low pretreatment hemoglobin level may have a prognostic impact on clinical outcome.

• 한국축산시설환경학회지
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• 제18권2호
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• pp.111-122
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• 2012

1. 가축분뇨 발효액비 관련하여 국내 현황은 농가형, 공동형, 상품형 등 크게 3가지 형태로 나누어 운영되고 있다. 특히 퇴비와 달리 가축분뇨 액비의 경우 유통활성화를 위한 품질인증제도는 실시되고 있지 않고 있으나 현장에서의 실무진의 의견을 종합하여보면 액비의 품질관리, 살포시기 조정, 저장기간의 최소화, 공동자원화시설의 운영활성화, 경종농가의 요구 등을 위해서는 반드시 필요한 부분이며 시기의 시급성을 요청하고 있다. 한편 해외국가 중 우리나라와 유사한 축산환경 문제를 가지고 있는 네덜란드는 생태법과 토양보호법을 통하여 분뇨의 관리에 대한 방법과 시기를 규정하고 있으며, 농가마다 가축분뇨 생산기준량이 인산 환산량으로 설정되어 있고 발생량 기록부의 보관을 의무화하도록 하고 있다. 또한 액비에 관한 분뇨 시용량에 대해서는 인산기준 목초지 150 kg/ha/년, 농경지 110 kg/ha/년 이하로 제한하고 있다. 일본의 경우 역시 지자체에서 발효액비 함유 비료성분을 기입하고 지역 내에서 유기액비로 유통하고 있으나, 액비의 지원과 품질의 규제 및 살포에 관한 규정은 별도로 없다. 그 외에 덴마크의 경우 액비에 대한 비료성분의 관리계획이 농가마다 의무화되어 있으며 이를 넘는 시용에 대해서는 벌금을 부과하며, 가축분뇨 저장시설에 대해서는 6개월 이상의 저장시설 설치가 의무화되어 있다. 이처럼 국외에서도 가축분뇨에 대한 관리에 대한 농지환원 및 환경에 관한 규제와 법률은 있지만 액비품질인증에 대한 세부적인 규정은 아직 마련되고 있지 않다. 2. 본 연구는 우리나라 가축분뇨 발효액비의 현장 이용형태에 따라 3가지로 나눈 후 Table 1에서 도출하였던 8가지의 형태에 따라 목표요소를 설정하였다. 향후 액비품질인증제도 구축을 위해서는 각 목표요소에 따른 평가요소의 구체적 정량, 정성화 작업이 필요하다. 예상되는 평가요소로서 (1) 비효성의 경우 사용되어지는 가축분뇨의 원료기준 및 비료의 성분을 나타내기 위한 N, P, K의 함량, (2) 위해성의 경우 비료공정관리규격에서 명시하고 있는 O-157대장균, 살모넬라 등과 같은 병원성미생물과 바이러스, 중금속의 존재여부, (3) 안정성의 경우 악취로 인한 암모니아 농도에 따른 세밀한 기준과 악취제어를 위한 액비의 부숙도에 관한 측정기준, (4) 균질성의 경우 가축분뇨 액비성상의 표준농도를 설정, 생산 공정의 표준화, (5) 경제성의 경우 품질인증기준 규정화, 제조단가 및 판매가격의 가격비율에 대하여 화학비료와 비교한 경제성, (6) 저장성의 경우 상품의 유통을 위해 장기적으로 보관할 수 있는 요소에 관하여 분뇨에서 발생하는 $CO_2$ 발생량이나 그 외에 부패에 영향을 주는 요소, (7) 상품성과 기능성의 경우 작물맞춤형 N, P, K 농도나 작물생장에 보조적인 역할을 할 수 있는 영양분요소 등을 고려하여야 한다. 향후 이러한 평가요소에 대한 명확한 기준을 마련하기 위하여 구체적인 연구와 조사가 필요하다. 특히 2012년부터 해양배출금지에 따른 가축분뇨 및 폐기물에 대한 육상처리가 불가피한 만큼 빠른 시일 내에 목표요소에 대한 평가요소의 구축이 필요하다.

• Radiation Oncology Journal
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• 제25권2호
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• pp.109-117
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• 2007

목 적: 유방암 환자에서 보조적 방사선치료 후 호흡기 증상을 동반한 방사선 폐렴(SRP) 및 방사선학적 폐 독성(RPT)의 빈도 및 이에 영향을 미치는 예측인자를 알아보고자 하였다. 특히 3차원 방사선계획에서 얻은 선량체적히스토그람(DVH) 인자와 RTP의 상관관계를 중심으로 분석해보고자 하였다. 대상 및 방법: 2003년 9월부터 2006년 2월까지 171명의 환자가 유방암으로 수술 후 방사선치료를 받았다. 2개의 tangential photon 조사야가 통상적으로 사용되었고, 액와부 림프절 전이 정도에 따라 anterior oblique photon 조사야를 추가하였다. 유방 보존술 후 보조적 방사선치료를 받은 침윤성 유방암 환자에는 전자선을 이용한 boost가 적용되었다. 방사선 치료 후의 정기추적 흉부 단순촬영소견을 흉부방사선전문의와 함께 검토, 분석하였다. RTOG 특성기준 및 modified WHO grading system을 적용하였다. 조사받은 방사선량에 따라 $V_{15},\;V_{20},\;V_{30}$ 및 mean lung dose (MLD)를 구하되, 동측 폐를 tangential 및 SCL 영역으로 구분하여, 각각의 DVH parameters 즉 $V_{15\;TNGT},\;V_{20\;TNGT},\;V_{30\;TNGT},\;MLD_{TNGT}$ 및 $V_{15\;SCL},\;V_{20\;SCL},\;V_{30\;SCL},\;MLD_{SCL}$을 구하여 RPT와의 상관관계를 분석하였다. 결 과: 호흡기 증상을 동반한 방사선 폐렴(SRP)이 4예(2.1%)에서 발생하였다(RTOG grade 3가 3예 grade 1이 1예). 나이 흡연여부, 기존폐질환유무, 항암요법, 호르몬치료, regional RT 여부 등은 SRP와 무관하였다. 3-RTP가 시행된 137예 중 13.9%에서 tangential 영역에 RPT가 발생하였다. Regional RT를 받은 59 중 49.2%에서 SCL 영역에 RPT가 발생하였다. Regional RT 유무(p<0.001), 환자의 나이(p=0.039), V15 TNGT를 제외한 모든 DVH parameter들이 RPT와 유의한 상관관계를 나타내었다. $MLD_{TNGT}$는 TNGT 영역의 RPT를, $V_{15\;SCL}$는 SCL 영역의 RPT를 예측하기에 적합한 것으로 분석되었다. 결 론: 본 연구에서 SRP의 빈도는 매우 낮았다. Regional RT 여부와 환자의 나이, DVH parameter들이 RPT와 유의한 상관관계를 나타내었으며, $MLD_{TNGT}$는 TNGT 영역에서, $V_{15\;SCL}$는 SCL 영역에서 RPT의 유의한 예측인자였다.

• 대한한방부인과학회지
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• 제21권4호
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• pp.258-268
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• 2008

Purpose: The purpose of this study is to report the effect of oriental treatment to Bell's palsy occurred during pregnancy. Methods: We treated 28 year old woman and 31 year old woman who had the Bell's palsy occurred during pregnancy. 2 patients were treated with oriental treatment such as herb medicine and acupuncture therapy. The effects of these treatment was evaluated by Yanagihara's unweighted grading system. Results: As a result, symptoms were remarkably alleviated and Yanagihara score was improved. Conclusion: According to this result, we concluded the oriental treatment could improve pregnant Bell's palsy patient. After this paper, further study and clinical approach based on oriental treatment will be needed about pregnant Bell's palsy patient.

• 한국축산시설환경학회지
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• 제14권1호
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• pp.47-52
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• 2008

1. 조사농장의 산란율은 하이라인, 이사브라운 모두 $85{\sim}93%$ 수준 이였으며, 농가자체 파란율은 하이라인 $1.5{\sim}2.2%$, 이사브라운 $1{\sim}1.4%$이었다. 2. 계란 이송단계별 파란발생비율은 집란벨트 4.7%> 엘리베이터 2.5%> 선란기 1.7%> 컨베이어 0.9% 순 이었다. 3. 집란벨트에서 엘리베이터로 이송 중 계란이송가이드를 설치할 경우 약 1%의 파란경감 효과가 있는 것으로 나타났다. 4. 하이라인 브라운은 주령이 높아지면서 파란율은 높아지고, 파각력은 낮아지는 것으로 나타났으며, 회귀계수 분석 유의성은 $R^2=0.7$로 파각력의 변화가 파란율에 영향을 미치는 것으로 분석되었다. 5. 이사브라운에서는 환우 전에 비하여 환우 후 파각력이 높아진 것으로 나타났다. 6. 난각 두께와 파각력, 그리고 접촉 후 파각변위와 파각력과의 관계에서 이들 함수의 변수간에 회귀관계는 유의성이 나타나지 않았다.

• Advances in concrete construction
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• 제6권1호
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• pp.29-45
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• 2018

This paper investigates the effect of inclusion of glass fibers on mechanical and fracture properties of binary blend geopolymer concrete produced by using fly ash and ground granulated blast furnace slag. To study the effect of glass fibers, the mix design parameters like binder content, alkaline solution/binder ratio, sodium hydroxide concentration and aggregate grading were kept constant. Four different volume fractions (0.1%, 0.2%, 0.3% and 0.4%) and two different lengths (6 mm, 13 mm) of glass fibers were considered in the present study. Three different notch-depth ratios (0.1, 0.2, and 0.3) were considered for determining the fracture properties. The test results indicated that the addition of glass fibers improved the flexural strength, split tensile strength, fracture energy, critical stress intensity factor and critical crack mouth opening displacement of geopolymer concrete. 13 mm fibers are found to be more effective than 6 mm fibers and the optimum dosage of glass fibers was found to be 0.3% (by volume of concrete). The study shows the enormous potential of glass fiber reinforced geopolymer concrete in structural applications.

• 한국의류산업학회지
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• 제24권2호
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• pp.241-248
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• 2022

This study aims to provide basic data to suggest guidelines for re-education and work improvement of modelists based on the analysis of the current status of modelist work and education. A survey was conducted from January 4 to May 15, 2020, targeting 44 people working in pattern, pattern CAD, and grading in domestic apparel companies. Descriptive statistical analysis and frequency analysis using SPSS 25 were employed to analyze the status of work type, work difficulties, and re-education. For pattern production, the rate of using pattern CAD for business was high. It was found that companies mainly use YUKA CAD (63.8%), and branded companies use pattern CAD (100%). It was found that 3D CAD is mostly employed by vendors (88.9%), and CLO (90%) is mainly used. Regarding difficulties in pattern making, it was found that they experienced difficulties with stretchable materials owing to the amount of shrinkage and sagging of the fabric. The work problem was the lack of requisite working hours owing to the volume of work. Regarding future re-education, 63.6% of the total respondents indicated that they required a course related to pattern correction and material. Moreover, it was found that re-education was necessary to upgrade technology and acquire new knowledge, however, information on re-education was insufficient.