• 문화기술의 융합
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• 제9권5호
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• pp.193-201
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• 2023

본 연구는 예비유아교사들의 긍정심리자본이 교사전문성에 미치는 영향에 있어서 교직에 대한 열정의 매개효과를 분석하고자 하였다. 연구대상으로는 예비유아교사 198명을 연구대상으로 Window용 PASW 20.0 프로그램을 사용하여 자료를 분석하였다. 예비유아교사의 긍정심리자본이 교사전문성에 미치는 영향과 교직에 대한 열정의 매개효과를 살펴보기 위하여 기술통계 및 Pearson 적률 상관분석, 중다회귀분석, Sobel Test를 이용한 매개효과 분석을 실시하였다. 연구결과에 따르면, 첫째, 예비유아교사의 긍정심리자본, 교직에 대한 열정, 교사전문성의 인식수준은 보통보다 다소 높게 나타났다. 둘째, 예비유아교사의 긍정심리자본, 교직에 대한 열정, 교사전문성 간의 관계를 살펴본 결과 정적인 상관관계를 보였다. 셋째, 예비유아교사의 긍정적 심리자본이 교사전문성에 영향을 미치는 과정에서 매개변인인 교직에 대한 열정은 긍정심리자본과 교사전문성의 관계에서 부분 매개하는 것으로 나타났다. 본 연구는 예비유아교사의 교사전문성 향상을 위한 다양한 접근방법에서 긍정심리자본과 교직열정이 효과적임을 규명하였고, 예비유아교사가 지녀야 할 교사전문성 함양을 위한 교육적 기초자료를 제공했다는 점에서 그 의의가 있다.

• 한국환경과학회지
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• 제14권10호
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• pp.905-910
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• 2005

The purpose of this study is the comparative analysis of Susan citizens' images of Eulsook-do as a coastal tourism destination before and after the construction of a road bridge across the Nakdong estuary in order to analyze local people's changes in leisure patterns. Analysis of the images of a pre-construction Eulsook-do that people aged both 40 and less and 50 and more had on five dimensions showed values higher than zero(0) that suggests neutral image, while their images of a post-construction Eulsook-do showed the shrinking size of pentagon on all five dimensions: ET(Entertainment), CA(Culture & Art), EE(Environment & Ecology), RC(Recreation) and LP(Leports) dimensions. Its pre- and post- construction image analysis conducted 20 years after it came to be built finds that the road bridge construction has led to the ecological, environmental disruption of the coast and the lower Nakdong river, having negative influence on the images of Eulsook-so.

• 비교문화연구
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• 제32권
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• pp.81-107
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• 2013

This study examines pre-college study abroad (PSA, Chogi yuhak), which is one of the fastest growing phenomena among the various efforts for Koreans to learn English. The discussion includes the reasons why PSA has become so popular in the last decade under the name of globalization, the problems it has caused, and its new impact that this phenomenon has on Korean mothers. This study argues that PSA boom provides Korean mothers with an opportunity to pursue their own self-realization by studying abroad with their school aged children. These "new wild geese" mothers, who make double investments in their own education as well as in their children's in the U.S. represent important aspects of the contemporary Korean society regarding education, gender and neoliberal social atmosphere.

• Reproductive and Developmental Biology
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• 제32권2호
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• pp.89-95
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• 2008

The present study was undertaken to identify changes of plasminogen activators (PAs) in porcine oviductal epithelial cells (POECs) during the estrous cycle classified with post-ovulatory stages (Post-Ov), early to mid-luteal stages (Early-mid L) and pre-ovulatory (Pre-Ov) stages. The urokinase-type plasminogen activator (uPA) was only observed on day 5 and day 7 of culture in the POECs on all the estrous cycles and gradually increased according to increasing culture times, but not Early-mid L. In POECs-conditioned medium, uPA, tissue-type (tPA) and tPA-PA inhibitor (tPA-PAI) activity were observed at all culture times during estrous cycles. The uPA activity of POECs-conditioned medium on Post-Ov stage were significantly (p<0.05) decreased during prolonged cultures. On the other hand, the tPA activity of POECs-conditioned medium at Post-Ov stage was significantly (p<0.05) higher on day 5 than compared to the other days. Although was higher on day 1 at Post-Ov stage, the tPA-PAI activity of POECs-conditioned medium was significantly (p<0.05) higher on day 7 at all stage than that of day 5 of the culture. Taken together, these results suggest that uPA, tPA and tPA-PAI are produced by POECs, and the variations of the PAs activity are regulated in the different stages of the estrous cycle.

• 디지털산업정보학회논문지
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• 제14권4호
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• pp.189-204
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• 2018

The purpose of this study is to examine an organizational performance difference by individual utilization level of the smart work. The Smart work help minimizing business process and improving organization productivity based on information technology. This new technology provides a flexible way of the task through smart-work center, videoconferencing, telecommuting, mobile(remote control) and business-only messenger. This investment changes organizational culture, institutions and behavior by new technology applying. The organization system change due to smart work has trouble between alteration preferences and existing maintains a group. In response, the organization should make investment justification of smart work for institutional and culture stabilized by a new system in organization. I set up the analytical process of four stages for empirical research. It will analyze an operation difference of the smart work between pre and post investment in the first-step analysis. The two-step analysis will conduct a text mining analysis of smart work operations. The three-step analysis will identify organization performance differences among individual levels in smart work. The four-step analysis will identify a factor difference in organizational performance by individual utilization level on smart work. According to the study, It has been revealed a difference between the pre and post investment performance on smart work. The text mining analyses many appeared an improvement opinion of organizational culture. Next, there is a difference in organization performance among utilize groups of smart work. Furthermore, the factors of organizational performance among groups appeared differently. The theoretical contribution of this study provided to expand the organizational theory of organization change and resistance. The practical implications provided to require a strong guideline an organizational culture and institution for smart work.

• 고신대학교 의과대학 학술지
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• 제33권3호
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• pp.337-346
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• 2018

Objectives: Serum procalcitonin (PCT) is a specific biomarker that rises after bacterial infection, and levels of PCT are known to correlate with the severity and mortality of patients with pneumonia and sepsis. However, the usefulness of PCT levels in acute pyelonephritis is unknown. This study aimed to evaluate the effectiveness of using the PCT level as a predictive test for bacteremia in acute pyelonephritis. Methods: Between January 2012 and June 2013, 140 patients diagnosed with acute pyelonephritis were admitted to Haeundae Paik Hospital. Serum PCT, C-reactive protein (CRP), and white blood cell (WBC) levels at pre- and post- treatment were measured. Blood and urine cultures were obtained from all patients. The levels of PCT, CRP, and WBCs were each compared between the blood culture-positive and blood culture-negative groups to assess their effectiveness in predicting bacteremia. Results: Pre-treatment PCT level was 0.77 ng/mL (95% CI: 0.42-1.60 ng/mL) in the blood culture-negative group and 4.89 ng/mL (95% CI: 2.88-9.04 ng/mL) in the blood culture-positive group, and the increase between the two groups was statistically significant. The area under the receiver operating characteristic curve of PCT level for prediction of bacteremia was 0.728. A cut-off value of 1.23 ng/mL indicated a sensitivity of 79.0 % and specificity of 60.0 % for PCT level. Conclusions: Serum PCT level is a useful predictive test for bacteremia in acute pyelonephritis. Through the early detection of bacteremia, serum PCT level can help estimate the prognosis and predict complications such as sepsis.

• Journal of Plant Biotechnology
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• 제50권
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• pp.176-182
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• 2023

사과 '후지'의 잎 절편체로부터 신초 기관형성을 통한 효율적인 식물체 재생 시스템을 확립하기 위하여 암처리 기간, 전처리 방법, 배양 용기당 치상 절편체 수, 배양 용기의 종류와 배지 위의 절편체 치상방향 등을 달리하여 실험을 실시하였다. 배양 초기 암조건에서의 배양은 신초 형성에 필수적이며, 4주 동안 배양한 후 명조건으로 옮겨 배양하는 것이 신초 재생에 가장 효과적이었다. 배양 전 전처리로는 sorbitol 40 g/L가 포함된 액체 재생배지에 2시간 동안 침지하였을 때 신초 형성율이 87.5%까지 증가하였으며, 신초 형성 시기가 빨라지는 것으로 나타났다. 배양 용기당 치상 절편체 수는 9개를 치상하는 것이 신초 재생에 효과적이었으며, 배양 용기는 100 ml 삼각플라스크를 사용하는 것이 petri dish를 사용하는 것에 비해 신초 형성율이 약 3배 정도 증가하였다. 잎절편체의 배지 위 치상방향은 배축면이 배지에 닿게 치상했을 때, 신초 형성율과 재생된 신초수가 다소 높게 나왔다. 암조건에서 4주간 배양한 후 명조건으로 옮겨총8주간 배양하여 재생된 신초는 1/4 MS에 0.2 mg/L의 IBA가 첨가된 배지에서 발근을 유도한 후 활착시켜 온실에서 재배하였을 때 정상적인 표현형을 보여주었다.

• 한국수정란이식학회지
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• 제27권3호
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• pp.189-192
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• 2012

Although embryonic stem cells (ESCs) or ES-like cells are reported from many mammalian species other than the mouse, the culture system for murine ESCs may not be suitable to the other species. Previously many other research groups have modified either human or mouse ESC culture systems for bovine ESC culture. In this study, we compared three different culture mediums consisting of DMEM, ${\alpha}$-MEM or KnockOut$^{TM}$-DMEM (KO), which are modified from human or mouse ESC culture system, for the generation of bovine ESCs. In this study, some pre-requisite events which are important for establishment and long-term propagation of ESCs such as inner cell mass (ICM) attachment on feeder cells, primary colony formation and sustainability after passaging. Once the ICM clumps attached on feeder cells, this was designated as passage 0. In regards to the rate of ICM attachment, ${\alpha}$-MEM was superior to the other systems. For primary colony formation, there was no difference between DMEM and ${\alpha}$-MEM whereas KO showed lower formation rate than the other groups. For passaging, the colonies were split into 2~4 pieces and passed every 5~6 days. From passage 1 to passage 3, DMEM system seemed to be appropriate for maintaining putative bovine ESCs. On the other hand, ${\alpha}$-MEM tended to be more suitable after passage 6. Although ${\alpha}$-MEM support to maintain a ES-like cell progenies to passage 15, all three culture systems which are modified from human or mouse ESC culture media failed to retain the propagation and long-term culture of putative bovine ESCs. Our findings imply that more optimized alternative culture system is required for establishing bovine ESC lines.

• Reproductive and Developmental Biology
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• 제29권2호
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• pp.117-120
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• 2005

This study was conducted to establish the optimal temperature condition before oocyte activation in B6m F1 mouse. In experiment 1, two embryo culture media (CZB vs KSOM) were evaluated for the development of activated mouse oocytes. Parthenogenetic embryos cultured in KSOM showed better blastocyst development than ones cultured in CZB $(56.2\%\;vs\;81.0\%\;p<0.01)$. Two-hour of pre-incubation before activation significantly reduced the number of hatched blastocysts in KSOM $(22.0\%\;versus\;8.8\%\;p<0.05)$. In experiment 2, recovered oocytes were pre-incubated at different temperature conditions before activation. The experimental groups were divided by 5 as follows. Group A: pre-incubation for 120 min at $37^{\circ}C$, Group B: pre-incubation at $37^{\circ}C$ for 90 min then at $25^{\circ}C$ for 30 min, Group C: pre-incubation at $37^{\circ}C$ for 60 min then at $25^{\circ}C$for 60 min, Group D: pre-incubation at $37^{\circ}C$ for 30 min then at $25^{\circ}C$ for 90 min, and Group E: pre-incubation at $25^{\circ}C$ for 120 min before activation. Group A $(67.6\%)$ and B $(66.7\%)$ showed better development to the blastocyst stage than other groups $(Group\;C:\;50.0\%\;Group \;D:\;49.2\%\;Group\;E:\;33.3\%,\;p<0.05)$. The present study indicates that the temperature before activation affects the development of B6D2 F1 mouse parthenogenetic oocytes and exposure to room temperature should be limited to 30-min when the oocytes are left in HEPES-buffered medium for micromanipulation.

• 한국가정과교육학회지
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• 제33권3호
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• pp.129-142
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• 2021

본 연구는 2019년 5월 중에 J 지역 예비교사 270명을 대상으로 설문지법에 의해 의생활 라이프스타일이 교사의복에 대한 태도에 미치는 영향을 파악함으로써 교직의복문화의 교육적 자료를 제공하고자 하였다. 본 연구의 자료분석을 위하여 SPSS 24.0 Program을 이용하여 요인분석, Cronbach's α 신뢰도 계수, t검증, 일원변량분석과 Duncan의 다중비교검증, 다중회귀분석을 실시하였다. 연구결과, 첫째, 중등학교 예비교사의 의생활 라이프스타일은 패션유행지향, 의복중요성지향, 매력적 외모지향, 경제성지향 요인으로, 또한 교사의복에 대한 태도는 활동성, 유행성, 정숙성 요인으로 유형화되었다. 둘째, 중등학교 예비교사의 의생활 라이프스타일, 교사의복에 대한 태도는 인구통계학적 변인인 성별, 학년에 따라 통계적으로 유의미한 차이가 있었다. 셋째, Z세대인 중등학교 예비교사의 의생활 라이프스타일은 교사의복에 대한 태도에 영향을 주는 것을 알 수 있었다. 결론적으로, 이제까지의 교사의복에 대한 고정관념에서 벗어나 교사의 변화하는 라이프스타일에 따라 의복을 착용하고 교직을 수행하는 교직의복문화가 형성되어져야 하겠다.