• 한국응급구조학회지
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• 제15권3호
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• pp.81-96
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• 2011

Purpose : The purpose of this study was to analyse early childhood teachers' perspectives and actual conditions of earthquakes and tsunami safety education. Methods : A total of 119 teachers were recruited from kindergarten and child-care center located in J city, all of whom gave consent to take part in these research. The data have been collected for 45 days from May to July in 2011. The data was analyzed by SPSS (version 17.0) and chi-square test. Results : The results of this study are summarized as follow. 1. 97.5% of the subjects considered earthquakes and tsunami safety education necessary, however, only 34.6% of them were given the education related to earthquakes and tsunami. 2. 63.9% of the early childhood teachers provided children in the kindergarten or childhood center with earthquakes and tsunami safety education, however, 30.3% of them were found to be without any experiences of earthquakes and tsunami safety education. 3. 68.5% of the teachers were informed earthquakes and tsunami safety knowledge. 4. 35.0% of respondents answered that the single session of earthquake and tsunami education was not efficient, thus expecting to receive continuing education. Conclusions : The study suggested that more teachers necessarily provide earthquake and tsunami safety education to reduce children's mortality rate in earthquakes and tsunami. The education program should be developed and systematized to improve teacher's knowledge. Moreover, the program should be continuously provided to teachers and children in the kindergarten or childhood center.

• 가정과삶의질연구
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• 제34권4호
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• pp.1-19
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• 2016

The present study aimed at investigating the relations between the amount of child care experienced in the first three years of life and socioemotional development of children at age 4 indicated by problem behaviors and peer competence. Using the longitudinal data of the Panel Study of Korean Children(PSKC), the information of 1,699 children were analyzed. The results indicated that any child care experience, hours in child care, full-time child care and early entry to child care were significantly related to children's externalizing behavior problem and play disruption at age 4. Some significant relations were detected between child care experience and better peer competence as well. Interestingly, the patterns of relations were different for boys and girls. Being in child care, a greater amount of child care and early entry to child care tended to be related to externalizing problem behaviors of boys and whereas they were more related to peer competence of girls indicated by play interaction, play disruption and play disconnection. Child care hours at age 3 were relative stronger predictors of children's development compared to those at age 1 or at age 2. The findings imply that the amount of child care during the first 3 years of life does not have strong harmful effects on preschoolers' socioemotional development and that there are differences in the effects of child care on boys and girls.

• 한국산학기술학회논문지
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• 제12권8호
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• pp.3466-3471
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• 2011

본 연구는 미디어교육이 유아교육현장에서 어떻게 인식되고 어떻게 활용되고 있는지를 알아보기 위한 연구이다. 이를 위해 미디어교육에 대한 유치원 교사와 학부모들의 인식 및 문제점들을 분석하여 유아미디어 교육에 새로운 대안을 찾을 수 있도록 다음과 같은 연구문제를 선정하였다. 첫째, 유아미디어 교육에 대한 교사-학부모가 인식하는 관심과 교육경험은 어떠한 차이가 있는가? 둘째, 유아미디어 교육에 대한 교사-학부모가 인식하는 교수-학습 방법은 어떠한 차이가 있는가? 셋째, 유아 미디어 교육에 대한 교사-학부모가 인식하는 문제점과 개선방향에 대한 인식 차이는 어떠한가? 를 알아보기 위해 유아교육 현장에 근무하고 있는 교사(250명)과 학부모 (250명)을 대상으로 얻은 연구결과는 다음과 같다. 유아미디어교육에 대한 관심과 경험은 있으나 구체적이지 못하고, 교사와 학부모가 선호하는 교수-학습방법으로는 이야기 나누기 활동이 가장 많았으며, 집단의 형태를 묻은 결과 교사-학부모 모두 소집단 그룹의 활동이 가장 이상적이라는 결과를 얻었으며 유아미디어 교육의 개선점으로는 교원의 연수기회확대, 미디어교육에 대한 사회 전반적인 이론의 미정립이라는 결론을 얻을 수 있었다.

• 한국학교보건학회지
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• 제15권2호
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• pp.233-248
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• 2002

Purpose : Sexual abuse especially in younger group have been growing. This study was performed to propose the fundamental data for developing early education program to prevent damage from sexual harassment in elementary school students. Method : Questionnaire survey on cognitions and experiences about sexual harassment was done on 3125 elementary school students from seven elementary schools in Busan area from January to March, 2002. Data analysis was done with SPSS (ver 10.0). Results : Though 82% of the students have ever herd about sexual harassment previously, but self assessment of 'well-known' was only 5%. About 40% of them have ever experienced audio-visual sexual materials mainly through PC (18%), media (14%), etc. And, 60% of them have ever educated about sexual harassment. In cognitions, they agreed 'unwanted touch', 'intentional showing his (her) own body', 'send lewd mails and pictures', but disagreed 'ask massage from aged', 'gaudy joke' as one of sexual harassment. In attitudes, 'no response', 'defense with friends and family', 'express unpleasantness apparently' were desirable pattern, instead, 'his (her) own responsibility', 'problem only between person concerned', 'neglect is the best way' were undesirable. About 24% of them have ever experienced at least one of the fifteen types of sexual harassment with major types of lewd mails pictures (11%), hugging (5%), ask massage (4.7%) and unwanted touch (3.3%). The experience by gender was higher in girls (25.0%) than boys (22.4%) with no statistical significance. The mean level of cognition and attitude out of one hundred was $70.3{\pm}28.1$ and $73.5{\pm}15.9$, respectively. The mean frequency of experience was $0.4{\pm}1.1$ times. The level of cognition and attitude was higher in girls, 6th graders, and in ever educated group (p<0.001). Conclusions : The cognition level of elementary school students about sexual harassment assessed considerable. And, they also experienced several types of sexual harassment, though not too much. Therefore, compatible education program let them able to protect themselves from sexual harassment should be developed and applied even in early school age.

• Journal of Chest Surgery
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• 제50권3호
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• pp.202-206
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• 2017

Background: Empyema is the collection of purulent exudate within the pleural space. Overall, 36%-65% of patients with empyema cannot be treated by medical therapy alone and require surgery. Multiloculated empyema is particularly difficult to treat with percutaneous drainage. Therefore, we describe our experiences with early aggressive surgical treatment for rapid progressive multiloculated empyema. Methods: From January 2001 to October 2015, we retrospectively reviewed 149 patients diagnosed with empyema who received surgery. The patients were divided into 2 groups according to whether they underwent emergency surgery or not. We then compared surgical outcomes between these groups. Results: The patients in group A (emergency surgery, n=102) showed a more severe infectious state, but a lower complication rate and shorter length of hospital stay. The incidence of lung abscess was higher in group A, and abscesses were associated with diabetes and severe alcoholism. Conclusion: Early aggressive surgical treatment resulted in good surgical outcomes for patients with rapid progressive multiloculated empyema. Furthermore, we suspect that the most likely causes of multiloculated empyema are lung abscesses found in patients with diabetes mellitus as well as severe alcoholism.

• Smart Structures and Systems
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• 제21권5호
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• pp.695-703
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• 2018

Based on monitoring data collected from the Nanjing Dashengguan Bridge over the last five years, this paper systematically investigates the effects of temperature field and train loadings on the structural responses of this long-span high-speed railway bridge, and establishes the early warning thresholds for various structural responses. Then, some lessons drawn from the structural health monitoring system of this bridge are summarized. The main context includes: (1) Polynomial regression models are established for monitoring temperature effects on modal frequencies of the main girder and hangers, longitudinal displacements of the bearings, and static strains of the truss members; (2) The correlation between structural vibration accelerations and train speeds is investigated, focusing on the resonance characteristics of the bridge at the specific train speeds; (3) With regard to various static and dynamic responses of the bridge, early warning thresholds are established by using mean control chart analysis and probabilistic analysis; (4) Two lessons are drawn from the experiences in the bridge operation, which involves the lacks of the health monitoring for telescopic devices on the beam-end and bolt fractures in key members of the main truss.

• 한국사회복지학
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• 제66권4호
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• pp.233-255
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• 2014

본 연구의 목적은 조기개입과 교육 복지 의료의 통합지원을 통해 기회균등 효과를 달성하고자 하는 영유아통합지원 실천 참여자의 지역사회 실존적 경험에서 발견한 지역사회변화 인식을 보는 것이다. 연구방법은 연구 참여자 인식을 사진을 통해 공유하는 포토보이스 방법을 사용하였다. 연구결과, 본 사업 참여 전의 지역사회는 '무장소의 발견'(주눅 들어 웅크리고 살아야 하는 의미 없는 공간, 우리동네) 이었다. 하지만 영유아통합지원 실천을 통해 '다시 뿌리내리기'(You are not alone)를 경험한다. 이는 본 실천을 통해 '양육품앗이' 공동체 체험을 하며 지역사회 네트워크로 편입되어가는 과정이었다. 실천경험의 결과 연구 참여자에게 지역사회는 교육 복지 의료자원 네트워크라는 새로운 장소, 즉 '장소성의 회복'(내 안에 피어난 새로운 장소, 우리동네)을 경험하였다. 이에 본 연구는 저소득 빈곤지역을 대상으로 한 지역사회개입의 영유아통합지원 실천의 필요성을 제기하며 포토보이스 연구결과에서 발견한 지역사회에 대한 반성적 고찰단계, 재정착 단계, 장소성 회복 단계 등을 제시한다. 더불어 지역사회변화 실천주체인 '양육품앗이'조직의 중요성과 사회자본 형성 노력 또한 제기한다.

• 산업경영시스템학회지
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• 제40권3호
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• pp.123-137
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• 2017

Competitiveness of small and medium companies often rely on the competency of their employees. Many employees however try to move to better environments if possible, which results in high uncertainty in maintaining solid human resources. The purpose of this paper is to investigate the influencing factors of turnover intention and organizational loyalty of the early experienced, especially three to five years experienced, employees in the small and medium enterprises. A survey had been conducted using both LMX (Leader Member eXchange) and TMX (Team Member eXchange) as an effort to test the impact of strategic human resource management factors on turnover intension and organizational loyalty. It has been observed that the level of LMX is critical on the turnover intension, while the levels of LMX and TMX are positively related to the organizational loyalty. Especially significant mediation effect affects on the organizational loyalty for TMX via LMX in the serial structure. The human resource management factors become effective under the circumstances where leader and team members exchange activities are activated. These findings can be used in reducing turnover intention and increasing organizational loyalty of early experienced employees by enhancing the leadership training of middle level managers of the small and medium enterprises organizations. Besides, a set of active communication channels should be provided for the young employees so that they can share their work experiences and difficulties within the organization. The key results of this study may help the practitioners set up a management plan to maintain a low turnover rate for their organizations.

• Biomolecules & Therapeutics
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• 제20권3호
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• pp.280-285
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• 2012

The developing embryo naturally experiences relatively low oxygen conditions in vivo. Under in vitro hypoxia, mouse embryonic stem cells (mESCs) lose their self-renewal activity and display an early differentiated morphology mediated by the hypoxia-inducible factor-$1{\alpha}$ (HIF-$1{\alpha}$). Previously, we demonstrated that histone deacetylase (HDAC) is activated by hypoxia and increases the protein stability and transcriptional activity of HIF-$1{\alpha}$ in many human cancer cells. Furthermore HDAC1 and 3 mediate the differentiation of mECSs and hematopoietic stem cells. However, the role of HDACs and their inhibitors in hypoxia-induced early differentiation of mESCs remains largely unknown. Here, we examined the effects of several histone deacetylase inhibitors (HDACIs) on the self-renewal properties of mESCs under hypoxia. Inhibition of HDAC under hypoxia effectively decreased the HIF-$1{\alpha}$ protein levels and substantially improved the expression of the LIF-specific receptor (LIFR) and phosphorylated-STAT3 in mESCs. In particular, valproic acid (VPA), a pan HDACI, showed dramatic changes in HIF-$1{\alpha}$ protein levels and LIFR protein expression levels compared to other HDACIs, including sodium butyrate (SB), trichostatin A (TSA), and apicidin (AP). Importantly, our RT-PCR data and alkaline phosphatase assays indicate that VPA helps to maintain the self-renewal activity of mESCs under hypoxia. Taken together, these results suggest that VPA may block the early differentiation of mESCs under hypoxia via the destabilization of HIF-$1{\alpha}$.

• Journal of Oral Medicine and Pain
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• 제44권2호
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• pp.45-53
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• 2019

Purpose: To determine whether crepitus may be a clinical indication for early temporomandibular joint (TMJ) osteoarthritis (OA) and to investigate the correlation between crepitus and the occurrence of TMJ OA with respect to factors, such as patient sex, age, chewing habits, and diagnosis. Methods: This is retrospective analysis of clinical data for 162 TMJs. The criteria for a joint to be included in this study was a minimum of two cone-beam computed tomography (CBCT) scans performed with no OA observed during the initial scan. The Diagnostic Criteria for Temporomandibular Disorders was used for OA diagnosis. Crepitus was recorded when it was objectively palpated during the follow-up period. Correlations between various patient factors and progression to TMJ OA were calculated using the Pearson's chi-square test. A linear-by-linear association was used to analyze trends of OA progression with increasing age. Results: Among the 162 joints, 101 progressed to OA and 61 did not. In the joints where crepitus had been present before OA was confirmed at next or last CBCT, OA progressed at a high rate, and especially higher in female and older patients (p<0.01). Patients in the pain-related disorder group with crepitus were observed to have higher rates of OA progression compared to patients in the intra-articular disorder group (p<0.01). Conclusions: If a patient experiences pain in the TMJs and crepitus, close monitoring through regular CBCT scans is necessary even if there is no evidence of radiologically confirmed OA after the first CBCT.