• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1993년도 봄 학술발표회 논문집
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• pp.130-135
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• 1993

Twelve 1/2 scale modeled wall specimens were tested statically up to failure to investigate she shear behavior of concrete walls reinforced with welded wire fabric. major variables were spacing of reinforcing bars, type of reinforcing bar(rebar, welded sire fabric, knurling wire) and the existence of tied column type reinforcement

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2005년도 춘계학술발표회
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• pp.1006-1007
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• 2005

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2006년도 하계학술발표대회 논문집
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• pp.375-380
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• 2006

Embedded Duct Ventilation System in Ondol is embedded supply duct in Ondol. This system allows heat up outside air to inside temperature with out using heat exchanger and electric heating coiling in winter season. In this research, we measured temperature of inside and surface of Ondol, supply duct, and supply air temperature incorporate embedded duct ventilation system in Ondol in model house($110m^2$) & one room($23m^2$)

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.1832-1835
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• 2005

This paper presents the steering control algorithm of an up and down motion robot using a quaternion. The up and down motion robot is to be moved on an irregular floor that can inevitably result in the errors of both position and orientation. Especially the orientation error should be compensated every work in order to adjust the misaligned values of current orientation to those commanded values. In this paper, we propose a new steering control algorithm between the two values by using a quaternion with spherical cubic interpolation. The proposed algorithm is shown to be effective in terms of vibration when compared to a conventional simple compensation without interpolation, by using $MATLAB^{(R)}$ and $VisualNastran4D^{(R)}$

• BMB Reports
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• 제56권2호
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• pp.120-125
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• 2023

Karyopherin-α3 (KPNA3), a karyopherin-α isoform, is intimately associated with metastatic progression via epithelial-mesenchymal transition (EMT). However, the molecular mechanism underlying how KPNA3 acts as an EMT inducer remains to be elucidated. In this report, we identified that KPNA3 was significantly upregulated in cancer cells, particularly in triple-negative breast cancer, and its knockdown resulted in the suppression of cell proliferation and metastasis. The comprehensive transcriptome analysis from KPNA3 knockdown cells indicated that KPNA3 is involved in the regulation of numerous EMT-related genes, including the downregulation of GATA3 and E-cadherin and the up-regulation of HAS2. Moreover, it was found that KPNA3 EMT-mediated metastasis can be achieved by TGF-β or AKT signaling pathways; this suggests that the novel independent signaling pathways KPNA3-TGF-β-GATA3-HAS2/E-cadherin and KPNA3-AKT-HAS2/E-cadherin are involved in the EMT-mediated progress of TNBC MDA-MB-231 cells. These findings provide new insights into the divergent EMT inducibility of KPNA3 according to cell and cancer type.

• 대한교통학회지
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• 제26권5호
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• pp.17-28
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• 2008

본 연구에서는 지금까지 소개된 램프업 분석기법을 정리하고, 각 방법론의 장 단점 및 적용사례를 제시한 후, 향후 교통수요분석에 대한 적용방안을 살펴보았다. 사례분석은 2002년 말 개통된 천안${\sim}$논산 고속도로 통행실적 자료를 이용하였으며 자료적용 시 월/계절 변동성을 제거하였다. 분석결과 월별 수요변동율을 이용한 F-Test를 제외하면 다른 모든 기법에서 램프업 기간이 9개월${\sim}$12개월로 분석되었다. 또한 램프업 폭을 분석한 결과 개통초기(개통 후 1개월)에는 실적치가 예상치의 $65%{\sim}72%$수준으로 상당히 낮게 나타났으며, 기간이 경과함에 따라 점차 안정화 수준으로 회복하는 것으로 나타났다. 향후 램프업 현상을 수요분석에 적용하기 위한 표준적인 램프업 분석기법의 정립뿐만 아니라, 실적 자료를 이용한 노선별 특성이 고려된 램프업 효과분석 관련 연구가 지속적으로 이루어진다면, 초기교통수요에 대한 이해의 폭을 넓힐 수 있을 뿐만 아니라, 신뢰성 있는 수요분석이 이루어질 것으로 판단된다.

• 지역사회간호학회지
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• 제4권1호
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• pp.38-44
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• 1993

The purpose of this study was to identify the status of health management from Dec 5, 1992 to March 10, 1993. The data. was. collected from 30 industrial nurses, through a structured questionnaire. The results were as follows : 1. 1.50%. of the companies surveyed were manufacturing companies, 24% of them were research center. 2. The sizes of the companies were as follows: 300-499 employees 11(37%). more than 1,000 employees 4(13%). 3. 18 companies(60%) had organized safety and health committees. 4. 25 companies(83%) had there own health clinics. 5. 60% of companies had a Health center assigned as were hospitals 83%. 6. Practical nurses were employed by all industries, 10 companies had their own physicians, and 3 had their own industrial hygienist. 7. The primary health examination rate was 96% and workers who took follow up examinations were 8.5% out of them, 73.6% were evaluated at the C & D grade. Follow Up management to D. evaluations was performed about 50%. 8. 13 personnel(43%) required, special examinations. 9. The relation between the workers health score and the health status, score was negative and not significant. Therefore the better health management the higher health level score.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 춘계학술대회 논문집 반도체 재료 센서 박막재료 전자세라믹스
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• pp.195-198
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• 2004

In this paper, the disk-type piezoelectric transformer for the high power was investigated with the variation of road resistance. The diameter and thickness of a disk-type piezoelectric transformer was 50mm and 4.5mm, respectively. The piezoelectric transformer was composed to PZT-PMN-PSN. The ratio of driving electrode and generating electrode ranges from 1.4:1 to 3:1. The poling direction of driving part and generating part are the same. A voltage step-up ratio increased with increasing the load resistance, $R_L$, so it reached 60 times under no road resistance. also, the maximum efficiency of 97% was obtained.

• Toxicological Research
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• 제28권2호
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• pp.113-116
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• 2012

Various kinds of positive effects of green tea extracts had been studied for long time which included anti-inflammation, anti-aging, and cardiometabolic effects. Although topical steroid and non-steroidal calcineurin inhibitors may control clinical symptoms of allergic contact dermatitis, some of patients also present allergic reaction to these topical agents. Therefore, we have tried green tea extracts for managing this skin disorder with expectation of anti-inflammatory effect without potential side effects including skin irritation and toxic responses. The toxicity test of green tea extract also did not show any sign of irritation in the skin throughout the test period. Moderate severity of allergic contact dermatitis presented satisfactory clinical outcome at second week follow-up which was final visit of outpatient. This result mean that green tea extract has a positive effect for managing allergic contact dermatitis but its potency and efficacy seem to be so not strong enough to control moderate severity allergy skin lesion. In this pilot study, we were able to conclude that green tea cell extracts might be applied for potential anti-inflammatory soaking without skin toxicity.

• 한국학교보건학회지
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• 제12권2호
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• pp.263-280
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• 1999

The purpose of this study is to present basic data to be used in the development of a sexual education program to create an affirmative sexual egoism. We classified the types of subjectivities and revelation attitudes of menstrual experience in 5th and 6th elementary school girls. The analytic method of data was a "Q-method" (William Stephenson). The results of this study classified four-types. The first type is an "open type". Girls of this type accepted menstrual experience as neither disease nor an embarrassment but as an important and natural course for a woman. The second type is the "concealing type". Girls of this type keep silent and conceal menstruation from persons because they consider it shameful or disgrace. The third type is the "conceited type". Girls of this type think that menstruation is painful-but only for them. Also, they accept such pains being 'grown-up'. The fourth type is the "tomboy type". Girls of this type want to be an eternal child; they hate being born a woman and think menstruation is troublesome. As a result of this research, we have concluded that it is necessary to educate girl students before they experience menstruation in order to develop positive attitudes towards sexuality and in so doing, aid them through adolescence.