유아교사의 임파워먼트와 자기개발 욕구와의 관계에서 교사 자긍심의 매개 효과 분석

안지혜 ( Ahn¸ Jeehye ),이유미 ( Lee¸ Youme ) 열린부모교육학회 2020 열린부모교육연구 Vol.12 No.4

본 연구는 유아교사의 임파워먼트와 자기개발 욕구와의 관계를 매개하는 변인으로서 교사 자긍심의 매개효과 검증을 목적으로 한다. 연구대상은 본 설문조사에 자발적 참여의사를 밝힌 서울과 경기지역 어린이집과 유치원의 현직유아교사 254명이다. 수집된 자료는 spss 25.0 통계프로그램을 활용하여 신뢰도 분석, 기술통계 분석, 상관관계 분석, 위계적 회귀분석을 실시하였고, Sobel Test를 통해 매개효과의 유의성을 확인하였다. 연구결과는 다음과 같다. 첫째, 유아교사의 임파워먼트와 자기개발 욕구, 교사 자긍심은 양호한 수준이며 유아교사의 근무기관 유형 및 근무시간에 따라 모두 유의한 차이가 나타났다. 둘째. 유아교사의 임파워먼트와 자기개발 욕구, 교사 자긍심 간에는 유의미한 정적 상관관계가 나타났다. 셋째, 유아교사의 임파워먼트가 자기개발 욕구에 미치는 영향에서 교사 자긍심이 이들의 관계를 부분적으로 매개하고 있음이 확인되었다. 본 연구의 의의는 교사 자율성, 전문성과 관련하여 오늘날관심이 높아지고 있는 임파워먼트가 어떻게 교사의 자기개발 욕구로 이어지는가라는 물음에 대한 답으로서 이들의 관계를 매개하는 교사 자긍심의 가치를 입증하였다는 것이다. 본 결과를 토대로 우리사회에서 교사 자긍심을 향상시킬수 있는 근무여건 개선 및 교육의 대상자가 아닌 학습공동체의 주체로서 교사교육의 방향 전환을 제안하는 바이다. The purpose of this study is to verify mediated effect of early childhood teachers’ self-esteem as a variable that mediates the relationship between early childhood teachers’ empowerment and self-development desire. Subjects to be studied were 254 early childhood teachers currently work for child care centers and kindergartens located in Seoul and Gyeonggi regions who would like to voluntarily take part in this questionnaire. The results are as follows: First, the early childhood teachers’ empowerment, self-development desire, and self-esteem were observed to be good and all showed a significant difference according to the type of institutions they work for and how long they work. Second, the early childhood teachers’ empowerment, self-development desire, and self-esteem showed a significant positive correlation among them. Third, the early childhood teachers’ self-esteem was observed to partially mediate the effects of empowerment on self-development desire. This study has significance in that it answers how the empowerment, to which growing attention being paid today, leads to the early childhood teachers’ self-development desire and that it proved the value of early childhood teachers’ self-esteem in terms of mediating the relationship between them. Based on the results, improvement of work environments that would improve early childhood teachers’ self-esteem and switching teacher education strategies as the main agent of learning community are proposed.

Preoperative Colonoscopic Tattooing with Autologous Blood in Laparoscopic Colorectal Cancer Surgery: Red-Flagging for an Invisible Enemy

Jeehye Lee,오흥권 대한내시경복강경외과학회 2020 Journal of Minimally Invasive Surgery Vol.23 No.3

Many laparoscopic techniques have been developed to repair inguinal hernia in children using either an intraperitoneal or extraperitoneal approach. Percutaneous internal ring suturing (PIRS) is one of the extracorporeal suture techniques. It could be performed with comparable surgical complication or recurrence rates and excellent cosmetic results. To minimize the perioperative complications, surgical procedures of PIRS can be performed carefully with technical refinements for inguinal hernia repair in children.

A Nonchlorinated Solvent-Processable Fluorinated Planar Conjugated Polymer for Flexible Field-Effect Transistors

Lee, Myeongjae,Kim, Min Je,Ro, Suhee,Choi, Shinyoung,Jin, Seon-Mi,Nguyen, Hieu Dinh,Yang, Jeehye,Lee, Kyung-Koo,Lim, Dong Un,Lee, Eunji,Kang, Moon Sung,Choi, Jong-Ho,Cho, Jeong Ho,Kim, BongSoo American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.34

<P>High carrier mobilities have recently been achieved in polymer field effect transistors (FETs). However, many of these polymer FET devices require the use of chlorinated solvents such as chloroform (CF), chlorobenzene (CB), and odichlorobenzene (DCB) during fabrication. The use of these solvents is highly restricted in industry because of health and environmental issues. Here, we report the synthesis of a low band gap (1.43 eV, 870 nm) semiconducting polymer (PDPP2DT-F2T2) having a planar geometry, which can be readily processable with nonchlorinated solvents such as toluene (TOL), o-xylene (XY), and 1,2,4-trimethylbenzene (TMB). We performed structural characterization of PDPP2DT-F2T2 films prepared from different solvents, and the electrical properties of the films were measured in the context of FETs. The devices exhibited an ambipolar behavior with hole dominant transport. Hole mobilities increased with increasing boiling point (bp) of the nonchloririated solvents: 0.03, 0.05, and 0.10 cm(2) V-1 s' for devices processed using TOL, XY, and TMB, respectively. Thermal annealing further improved the FET performance. TMB-based polymer FETs annealed at 200 degrees C yielded a maximum hole mobility of 1.28 cm(2) s(-1), which is far higher than the 0.43 cm(2) V-1 s(-1) obtained from the CF-based device. This enhancement was attributed to increased interchain interactions as well as improved long-range interconnection between fibrous domains. Moreover, all of the nonchlorinated solutions generated purely edge-on orientations of the polymer chains, which is highly beneficial for carrier transport in FET devices. Furthermore, we fabricated an array of flexible TMBprocessed PDPP2DT-F2T2 FETs on the plastic PEN substrates. These devices demonstrated excellent carrier mobilities and negligible degradation after 300 bending cycles. Overall, we demonstrated that the organized assembly of polymer chains can be achieved by slow drying using high bp nonchlorinated solvents and a post thermal treatment. Furthermore, we showed that polymer FETs processed using high bp nonhalogenated solvents may outperform those processed using halogenated solvents.</P>

Graphene Phototransistors Sensitized by Cu_2–<i>x</i>Se Nanocrystals with Short Amine Ligands

Lee, Juhee,Gim, Yuseong,Yang, Jeehye,Jo, Hyunwoo,Han, Jaehun,Lee, Hojin,Kim, Do Hwan,Huh, Wansoo,Cho, Jeong Ho,Kang, Moon Sung American Chemical Society 2017 The Journal of Physical Chemistry Part C Vol.121 No.9

<P>Recent attempts to employ colloidal semiconductor nano crystals (NCs) as the sensitizing materials for hybrid NC graphene phototransistors have provided a new effective photosensing platform. However, most of these devices are based on NCs containing either lead or cadmium, which would not be the most preferred material candidates for commercialization. Here, we demonstrate the use of colloidal Cu2-xSe NCs that do not contain lead or cadmium as the sensitizers for NCs graphene hybrid visible phototransistors. Because the long olyelamine ligands originally attached on Cu2-xSe NCs are known to impede electronic process between NCs and graphene, the long ligands are replaced with short amines including octylamine, hexylamine, and butylamine. It is found that the NCs layer with shorter amine ligands yields a more prominent n-doping effect on graphene under illumination, which results in a systematic negative shift in Dirac voltage. More importantly, this leads to devices with larger photocurrent and larger light responsivity. Consequently, from Cu2-xSe NC graphene hybrid phototransistors attached with butylamine ligands, responsivity as high as 2600 A/W and photocurrent gain as high as 36 000 are achieved at an optical power of 5 X 10(-8) W, which are expected be even larger at lower optical powers.</P>

Predicting stage ypT0–1N0 for nonradical management in patients with middle or low rectal cancer who undergo neoadjuvant chemoradiotherapy: a retrospective cohort study

Jeehye Lee,In Jun Yang,Jung Wook Suh,Hong-min Ahn,Heung-Kwon Oh,Duck-Woo Kim,Young-Hoon Kim,Kyoung Ho Lee,Sung-Bum Kang 대한외과학회 2022 Annals of Surgical Treatment and Research(ASRT) Vol.103 No.1

Purpose: It is important to discover predictive factors that can identify rectal cancer patients who will respond well to neoadjuvant concurrent chemoradiotherapy (CCRT) to develop management strategies, preserve sphincter and avoid over- treatment. This study explored clinical factors that would predict the adequacy of nonradical management after CCRT in patients with middle or low rectal cancer. Methods: We retrospectively evaluated 447 patients with middle or low rectal cancer who were treated with curative surgery after neoadjuvant CCRT between January 2010 and December 2019. The good response group comprised patients with stages ypT0–1N0 on resection after CCRT; the remaining patients were included in the poor response group. Results: Of 447 patients (mean age, 60.37 ± 11.85 years), 108 (24.2%) had ypT0–1N0 (71.3% with ypT0N0, 4.6% with ypTisN0, and 24.1% with ypT1N0). Overall, 19 patients with cT1–2 (50.0% . 21.8% with cT3–4, P < 0.001), 22 with well-differentiated tumors (51.2% . 21.3% with moderately/poorly differentiated tumors, P < 0.001), 16 with fungating tumors (47.1% . 22.3% with other types, P = 0.001), and 66 with anterior/posterior circumference direction (28.9% . 19.2% with lateral/ encircling direction, P = 0.016) had stage ypT0–1N0. On multivariable analysis, cT1–2 (P = 0.021) and well-differentiated tumor (P = 0.001) were independent predictors of ypT0–1N0. Fungating tumors were not significantly associated with ypT0– 1N0 (P = 0.054). Conclusion: Stage cT1–2 and well differentiation are predictors of ypT0–1N0, while fungating tumors could be considered clinically meaningful, possibly identifying candidates for nonradical treatment post-CCRT.

Associations Between Preschool Education Experiences and Adulthood Self-rated Health

Lee, Jeehye,Bahk, Jinwook,Khang, Young-Ho The Korean Society for Preventive Medicine 2017 Journal of Preventive Medicine and Public Health Vol.50 No.4

Objectives: This study aimed to examine the association between preschool education experiences and adulthood self-rated health using representative data from a national population-based survey. Methods: Data from the Korean Labor and Income Panel Study in 2006 and 2012 were used. A total of 2391 men and women 21-41 years of age were analyzed. Log-binomial regression analyses were conducted to examine the associations between preschool education experience and self-rated health in adulthood. Parental socioeconomic position (SEP) indicators were considered as confounders of the association between preschool education experience and adulthood subjective health, while current SEP indicators were analyzed as mediators. Age-adjusted prevalence ratios (PRs) and the associated 95% confidence intervals (CIs) were estimated. Results: Compared with men without any experience of preschool education, those with both kindergarten and other preschool education experiences showed a lower prevalence of self-rated poor health (PR, 0.65; 95% CI, 0.47 to 0.89). In women, however, such an association was not evident. The relationship of preschool education experiences with self-rated poor health in adulthood among men was confounded by parental SEP indicators and was also mediated by current SEP indicators. After adjustment for parental and current SEP indicators, the magnitude of the associations between preschool education experiences and adulthood subjective health was attenuated in men. Conclusions: Preschool education experience was associated with adulthood self-rated health in men. However, this association was explained by parental and current SEP indicators. Further investigations employing a larger sample size and objective health outcomes are warranted in the future.

Effect of different cooking methods on the content of vitamins and true retention in selected vegetables

Lee, Seongeung,Choi, Youngmin,Jeong, Heon Sang,Lee, Junsoo,Sung, Jeehye Korean Society of Food Science and Technology 2018 Food Science and Biotechnology Vol.27 No.2

This study evaluated the effect of different cooking methods including blanching, boiling, microwaving and steaming on the content of vitamins in vegetables. True retention was estimated using the yield expressed as a ratio of the weight of the cooked sample to the weight of the raw sample. The retention of vitamin C ranged from 0.0 to 91.1% for all cooked samples. Generally, higher retention of vitamin C was observed after microwaving with the lowest retention recorded after boiling. Cooked vegetables were occasionally higher contents of fat-soluble vitamins, including ${\alpha}$-tocopherol and ${\beta}$-carotene, than that of their fresh counterparts, but it depends on the type of vegetables. Microwave cooking caused the greatest loss of vitamin K in crown daisy and mallow; in contrast, it caused the least loss of vitamin K in spinach and chard. Cooking may cause changes to the contents of vitamins, but it depends on vegetables and cooking processes.

The Design of Hangeul Digital Font「17th-century princess font」

JeeHye Lee(이지혜) 한국디자인학회 2022 한국디자인학회 국제초대전도록 Vol.2022 No.11

Geographic Variation in Morbidity and Mortality of Cerebrovascular Diseases in Korea during 2011-2015

Lee, Juyeon,Bahk, Jinwook,Kim, Ikhan,Kim, Yeon-Yong,Yun, Sung-Cheol,Kang, Hee-Yeon,Lee, Jeehye,Park, Jong Heon,Shin, Soon-Ae,Khang, Young-Ho Elsevier 2018 Journal of stroke and cerebrovascular diseases Vol.27 No.3

<P><B>Background</B></P> <P>Little is known about within-country variation in morbidity and mortality of cerebrovascular diseases (CVDs). Geographic differences in CVD morbidity and mortality have yet to be properly examined. This study examined geographic variation in morbidity and mortality of CVD, neighborhood factors for CVD morbidity and mortality, and the association between CVD morbidity and mortality across the 245 local districts in Korea during 2011-2015.</P> <P><B>Methods</B></P> <P>District-level health care utilization and mortality data were obtained to estimate age-standardized CVD morbidity and mortality. The bivariate Pearson correlation was used to examine the linear relationship between district-level CVD morbidity and mortality Z-scores. Simple linear regression and multivariate analyses were conducted to investigate the associations of area characteristics with CVD morbidity, mortality, and discrepancies between morbidity and mortality.</P> <P><B>Results</B></P> <P>Substantial variation was found in CVD morbidity and mortality across the country, with 1074.9 excess CVD inpatients and 73.8 excess CVD deaths per 100,000 between the districts with the lowest and highest CVD morbidity and mortality, respectively. Higher rates of CVD admissions and deaths were clustered in the noncapital regions. A moderate geographic correlation between CVD morbidity and mortality was found (Pearson correlation coefficient = .62 for both genders). Neighborhood level indicators for socioeconomic disadvantages, undersupply of health care resources, and unhealthy behaviors were positively associated with CVD morbidity and mortality and the relative standing of CVD mortality vis-à-vis morbidity.</P> <P><B>Conclusions</B></P> <P>Policy actions targeting life-course socioeconomic conditions, equitable distribution of health care resources, and behavioral risk factors may help reduce geographic differences in CVD morbidity and mortality in Korea.</P>

Protective Effects of Black Rice Extracts on Oxidative Stress Induced by tert-Butyl Hydroperoxide in HepG2 Cells

Lee, Seon-Mi,Choi, Youngmin,Sung, Jeehye,Kim, Younghwa,Jeong, Heon-Sang,Lee, Junsoo The Korean Society of Food Science and Nutrition 2014 Preventive Nutrition and Food Science Vol.19 No.4

Black rice contains many biologically active compounds. The aim of this study was to investigate the protective effects of black rice extracts (whole grain extract, WGE and rice bran extract, RBE) on tert-butyl hydroperoxide (TBHP)-induced oxidative injury in HepG2 cells. Cellular reactive oxygen species (ROS), antioxidant enzyme activities, malondialdehyde (MDA) and glutathione (GSH) concentrations were evaluated as biomarkers of cellular oxidative status. Cells pretreated with 50 and $100{\mu}g/mL$ of WGE or RBE were more resistant to oxidative stress in a dose-dependent manner. The highest WGE and BRE concentrations enhanced GSH concentrations and modulated antioxidant enzyme activities (glutathione reductase, glutathione-S-transferase, catalase, and superoxide dismutase) compared to TBHP-treated cells. Cells treated with RBE showed higher protective effect compared to cells treated with WGE against oxidative insult. Black rice extracts attenuated oxidative insult by inhibiting cellular ROS and MDA increase and by modulating antioxidant enzyme activities in HepG2 cells.