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윤주희 ( Juhee Yun ),이두열 ( Dooyoul Lee ),박승렬 ( Sungryul Park ),김민생 ( Min-saeng Kim ),최동수 ( Dongsu Choi ) 한국부식방식학회 2021 Corrosion Science and Technology Vol.20 No.2
Atmospheric corrosion severity associated with aircraft parking environment was studied using metallic specimens, and temperature and humidity sensors installed at each aircraft operating base. Data were analyzed after a year of exposure. Silver was used to measure chloride deposition by integrating X-ray photoelectron spectroscopy depth profiles. Carbon steel was utilized to determine the corrosion rate by measuring the weight loss. The time of wetness was determined using temperature and humidity sensor data. Analysis of variance followed by Tukey’s “honestly significant difference” test indicated that atmospheric environment inside the shelter varied significantly from that of unsheltered parking environment. The corrosion rate of unsheltered area also varies with the roof. Hierarchical clustering analysis of the measured data was used to classify air bases into groups with similar atmospheric corrosion. Bases where aircraft park at a shelter can be grouped together regardless of geographical location. Unsheltered bases located inland can also be grouped together with sheltered bases as long as the aircraft are parked under the roof. Environmental severity index was estimated using collected data and validated using the measured corrosion rate.
Park, Juhee 대한가정학회 2003 Human Ecology Research(HER) Vol.41 No.1
한국기혼 여교수의 가족 및 직업역할 수행과 그 효과 및 인식 본 연구는 한구의 중상 층 기혼 여교수들의 그들의 가정과 직장생활의 균형을 위한 복수역한 수행에 따른 역할 긴장도 와 역한 만족도를 조사하는 것과 한국 여교수들이 그들의 취업이 자신과 가족에게 어떤 영향을 미친다고 인식하고 있는지를 조사하는데 그 목적이 있으며, 기혼여교수들과 4년제 대학에 근무하는 남자교수들의 부인 및 한국과학 기술연구소의 연구원들이 부인인 전업주부들과 비교하여 주사하였다. 본 연구의 결과에 따르면 여교수들은 전업주부들과 비교하여 더욱 높은 역할 만족도 와 긴장도 를 경험하는 것으로 나타났다 대부분의 여교수들은 자신의 취업이 자녀들과 가족들에게 긍정적인 영향을 미친다고 인식하고 있는것으로 나타났다
Kaempferol sensitizes cell proliferation inhibition in oxaliplatin-resistant colon cancer cells
Juhee Park,이가은,안현정,Cheol-Jung Lee,Eun Suh Cho,Han Chang Kang,Joo Young Lee,Hye Suk Lee,Jin-Sung Choi,Dae Joon Kim,Jong Soon Choi,조용연 대한약학회 2021 Archives of Pharmacal Research Vol.44 No.12
Resolution to chemoresistance is a major challengein patients with advanced-stage malignancies. Thus,identifi cation of action points and elucidation of molecularmechanisms for chemoresist human cancer are necessary toovercome this challenge. In this study, we provide importantevidence that kaempferol targeting RSKs might be a strategyto reduce the oxaliplatin-resistant colon cancer cells. Wefound that MAPK and PI3K-AKT signaling were increasedin oxaliplatin (Ox)-resistant HCT116 (HCT116-Ox R ) cellscompared to Ox-sensitive HCT116 (HCT116-Ox S ) cells. Comparison of cell sensitivities using SP600125 (JNKinhibitor), SB206580 (p38 kinase inhibitor), or MK-2206(AKT inhibitor) revealed that cell proliferation inhibitionwas strongly observed in HT29 cells compared to that inHCT116 cells in both Ox S and Ox R cells. Interestingly,SP600125, SB206580, and MK-2206 treatment showedhigher cell proliferation inhibition in Ox S cells than that in Ox R cells in both HCT116 and HT29 cells, except followingtreatments with 10 μM of SP600125, and 30 μMof SB206580. In comparison to magnolin and aschantin,kaempferol showed the strongest inhibitory eff ect on cellproliferation in both HCT116 and HT29 cells. Importantly,HCT116- and HT29-Ox R cells showed higher sensitivitiesto cell proliferation inhibition than those of HCT116- andHT29-Ox S cells, resulting in the accumulation of cells atthe G 2 /M-phases of the cell cycle. Finally, we showed thatAP-1 transactivation activity was markedly decreased bykaempferol in HCT116- and HT29-Ox R cells compared tothe activity levels in HCT116- and HT29-Ox S cells. Takentogether, the results demonstrate that kaempferol-mediatedAP-1 inhibition might be an important signaling mechanismto resolve the chemoresistance of Ox-resistant colon cancercells.
A Review of Research Studies on Automotive HUD Infortmaion and UI Design
( Juhee Park ),( Woojin Park ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
Compared with traditional head-down displays, automotive head-up displays (HUDs) are known to benefit driver performance and safety by allowing drivers to focus more on the road ahead. With technological advances, automotive HUD systems are becoming increasingly capable of displaying a large amount of information of different kinds. Even full-windshield HUD systems that support realizing augmented reality (AR) are expected to be commercially available in the near future expanding the possibilities of the user interface (UI) design for automotive HUD systems. Despite the inherent benefits of automotive HUDs, however, their efficacy seems to largely depend on the UI design as well as the selection of information content and the amount of information presented. Presentation of excessive or inadequate information or poor UI design can adversely affect driver safety. To better support the design of safe and driver-friendly automotive HUD systems, this paper aims to provide a literature review on automotive HUD information and UI design. The findings in this article may guide future research efforts regarding the automotive HUD design.
Multivariate Kernel Regression
( Juhee Park ) 성균관대학교 응용통계연구소 2018 통계연구 Vol.20 No.-
This study focuses on the multivariate kernel regression. We start from the basic step from definition of nonparametric regression to multivariate kernel regression. To see how kernel regression works, we adjust order of regression, true function which is a target for estimation, kinds of kernel and then perform simulations.
Exploring the Pretending Elements in Block Play
( Juhee Park ),( Suksil Han ) 한국유아교육학회 2017 INTERNATIONAL JOURNAL OF EARLY CHILDHOOD EDUCATION Vol.23 No.2
The purpose of this study was to identify pretending elements that appeared in block play. We were also to determine if the pretend elements in block play differed between 3 years and 5 years old, and between boys and girls. The participants for this study were sixty-four 3-year-old children (36 were boys and 28 were girls) and sixty-eight 5-year-old children (32 were boys and 36 were girls). The analyzing tool of pretending elements in clay play (ATPE) developed by Han & Park (2010), was used to evaluate the pretending elements which appeared in block play. Twelve undergraduates majoring in early childhood care and education were trained to observe and record the pretending elements in block play. One hundred and twenty six (126) children were divided into 25 groups of 5 children each, with one group of six. They participated in 5 block play sessions twice a week. The duration of each play session was 40 minutes. T-tests were used to examine the differences in the pretending elements by gender and age. The children participated more in ‘projective pretend play’ than ‘self-subjective pretend play’. In sub-items of self-subjective pretend play, ‘pretending to play a role’ appeared most frequently in both gender. Whereas, in sub-items of ‘projective pretend play’, the most frequently appeared pretending element was ‘pretending play with an object’, especially boys did more ‘projective pretending with an object’ than girls. There were no differences in the pretending elements by age. This result indicated that constructive play was not just to make some constructions with materials but closely related with symbolism. It could be also seen that the pretending elements appearing in constructive play were differ from depending on the materials in the play. By providing appropriate and various materials to children, teachers and parents should guide and stimulate the constructive play with pretending.