• 한국보육지원학회지
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• 제16권5호
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• pp.105-126
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• 2020

Objective: This study aimed to reveal pre-service early childhood teachers' perception of children's environmental education using concept mapping and demonstrating its importance. Methods: Based on Kane and Trochim's(2007) procedure, 33 pre-service early childhood teachers conducted brainstorming and statement writing, and then the importance of selected statements were rated by 202 pre-service early childhood teachers. Selected statements were analyzed through multidimensional scaling and hierarchical cluster analysis. Results: Pre-service early childhood teachers perceived children's environmental education as concept mapping with 2-dimensions and eight clusters. The following eight clusters were established (1) daily practice through hands on experience, (2) nature environment, (3) recognizing and coping with environmental issues, (4) environmental preservation practices, (5) environmental sensitivity and consideration, (6) purpose of children's environmental education, (7) necessity for children's environmental education (8) Practice through connection with child's home and community. And then among the eight clusters, the most important was recognized as 'daily practice through hands on experience', and among the statements 'young children learn through the method of playing in nature and experience nature' was considered the most important. Conclusion/Implications: Based on these results, we discuss the importance of children's environmental education of pre-service early childhood teachers and how to support to develop teacher's training program.

• 한국수학교육학회지시리즈A:수학교육
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• 제57권2호
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• pp.179-196
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• 2018

The purpose of this study was to investigate the measurement equivalence and to suggest application ways in teaching aptitude and personality test results for pre-service mathematics teachers between a graduate school of education and a college of education. This study analyzed the scores of the teaching aptitude and personality test of 36 pre-service mathematics teachers enrolled in a graduate school of education and 111 pre-service mathematics teachers in a college of education by performing a multivariate generalizability analysis. The main results were as follows. First, graduate's pre-service mathematics teachers had a higher level of teaching aptitude and personality than that of college's pre-service mathematics teachers based on the total scores. In addition, graduate's pre-service mathematics teachers had higher levels of teaching aptitude and personality than those of college's pre-service mathematics teachers except for a creativity application domain based on the sub-domain scores. Second, cognitive domains were measured more precisely but affective domains were measured less precisely for graduate's pre-service mathematics teachers than for college's pre-service mathematics teachers. Third, regardless of school levels, Cronbach's ${\alpha}$ values, which might be overestimated by applying the classical test theory, were higher than dependability coefficients. Fourth, this study showed a somewhat negative result in ensuring the measurement equivalence for a problem solving exploration domain. However, regardless of school levels, this study indicated that the overall measurement was generally reliable on composite scores. Based on these results, it was confirmed that multivariate generalizability methodologies' approach can be useful for exploring the measurement equivalence issues. Finally, this study suggests how to utilize the results of the test, how to apply a multivariate generalizability analysis for detecting the measurement equivalence, and how to develop future research based on limitations.

• BMB Reports
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• 제29권2호
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• pp.175-179
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• 1996

Viral surface proteins are known to play an essential role in attachment of the virus particle to the host cell membrane. In case of the hepatitis B virus (HBV) several reports have described potential receptors on the target cell side, but no definite receptor protein has been isolated yet. As for the viral side, it has been suggested that the preS region of the envelope protein, especially the preS1 region, is involved in binding of HBV to the host cell. In this study, preS1 region was recombinantly expressed in the form of a maltose binding protein (MBP) fusion protein and used to identify and visualize the expression of putative HBV receptor(s) on the host cell. Using laser scanned confocal microscopy and by FACS analysis, MBP-preS1 proteins were shown to bind to the human hepatoma cell line HepG2 in a receptor-ligand specific manner. The binding kinetic of MBP-preS1 to its cellular receptor was shown to be temperature and time dependent. In cells permeabilized with Triton X-100 and treated with the fusion protein, a specific staining of the nuclear membrane could be observed. To determine the precise location of the receptor binding site within the preS1 region, several short overlapping peptides from this region were synthesized and used in a competition assay. In this way the receptor binding epitope in preS1 was revealed to be amino acid residues 27 to 51, which is in agreement with previous reports. These results confirm the significance of the preS1 region in virus attachment in general, and suggest an internalization pathway mediated by direct attachment of the viral particle to the target cell membrane.

• 한국보육지원학회지
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• 제19권2호
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• pp.119-141
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• 2023

Objective: This study aimed to investigate Pre-service early childhood teachers' perceptions and roles regarding young children's free play time. Methods: The study utilized the photovoice method and involved 21 pre-service early childhood teachers who expressed interest in participating. Participants were enrolled in an infants teaching methodology class in B city. The study involved four virtual meetings conducted via untact teams, and the automatic recordings of these meetings were transcribed for analysis. Results: The results revealed that pre-service early childhood teachers recognized young children's free play time as a period to enjoy full freedom, develop as the main agent of their lives, and express their imagination. Furthermore, pre-service early childhood teachers perceived their roles during young children's free play time as a specialist infant observer, a connector between play and learning, and a versatile supporter. Conclusion/Implications: The findings suggest the need for a systematic curriculum to provide pre-service early childhood teachers with a balanced perspective and awareness of the meaning of free play and teacher roles. The study highlights the importance of expanding pre-practice courses for observation of play and field-oriented curriculum for incumbent teachers.

• BMB Reports
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• 제41권9호
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• pp.640-644
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• 2008

The preS1 surface protein of the hepatitis B virus (HBV) is a key factor involved in initial viral entry into hepatocytes. It has been long postulated that an anti-HBV effect should be achievable using peptide fragments of the preS1. Recent reports demonstrated that several preS1-derived lipo-peptides in genotype D HBV exhibit nano to picomolar inhibitory activity against HBV infection. In this study, an acylated analog of a preS1 fragment, a 21-residue lipo-peptide (named 7524 BVS7) with a sequence of palmitoyl-GMGTNLSVPNPLGFFPDHQLDC-$NH_2$, from genotype C HBV was produced base upon a previous structural study and was shown potently inhibits HBV infection with an $IC_{50}$ of $\approx$ 20 nM.

• 한국학교수학회논문집
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• 제25권3호
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• pp.279-306
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• 2022

본 연구의 목적은 실제 수업 및 수업 전후 진행된 학습공동체 회의에 참여하는 과정에서 나타나는 초등 예비교사의 주목하기 특징의 변화를 분석하여, 초등 예비교사 교육에 대한 시사점을 도출하고자 하는 것이다. 이를 위하여 본 연구에서는 연구 참여자인 초등 예비교사와 연구진들로 구성된 학습공동체를 구성하였다. 분석 자료로 초등 예비교사의 실제 수업과 학습공동체 사전, 사후회의 과정 전체에 대한 녹화 및 녹음 자료와 이들에 대한 전사 자료, 초등 예비교사의 반성일지와 사후 인터뷰, 연구자의 관찰일지, 학생의 학습지 등이 수집되었으며, 분석 방법으로 해석적 사례연구가 수행되었다. 연구 결과, 초등 예비교사의 주목하기의 특징이 주의 기울이기, 해석하기, 반응 결정하기의 각 요소에서 다음과 같이 변화하였으며, 이와 같은 변화에 학습공동체가 기여하였음을 확인할 수 있었다. 첫째, 초등 예비교사의 주의 기울이기 대상이 과제 결과물에서 학생의 통계적 사고로 변화하였다. 둘째, 초등 예비교사의 해석하기가 구체적인 근거가 부족한 상태에서 근거의 다양성과 구체성이 갖추어진 상태로 변화하였다. 셋째, 초등 예비교사의 반응 결정하기가 생산적이지 못한 반응 결정하기에서 생산적인 반응 결정하기로 변화하였다.

• 한국보육지원학회지
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• 제13권5호
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• pp.93-109
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• 2017

Objective: The purpose of this study is to provide basic data in order to increase the flourish of early childhood pre-service teachers by examining pre-service teacher's basic psychological needs and characteristics on flourish. Methods: A questionnaire survey was conducted on 200 pre-service teachers majoring in early childhood education in Busan and the results were analyzed. Results: First, the level of basic psychological needs, characteristics and flourish of pre-service teachers was above average and there was a significant positive correlation between basic psychological needs, characteristics and flourish. Second, the characteristics of pre-service teachers were relatively more influential on flourish than basic psychological needs. Conclusion/Implications: The main variables predicting early childhood pre-service teacher's flourish are characteristics and basic psychological needs. And as characteristics and basic psychological needs of pre-service teachers are promoted, the flourish of pre-service teachers is increased.

• 한국콘텐츠학회논문지
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• 제14권4호
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• pp.500-512
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• 2014

본 연구목적은 예비교사들이 인식하는 중등교사의 역할을 분석, 이해하기 위한 것이다. 이를 위해 교직과정을 이수 중인 예비교사들을 대상으로 반성적 글쓰기를 실시하고, Colaizzi의 방법을 활용하여 분석하였다. 연구 결과 예비교사들은 중등교육의 의미를 공감과 발견으로, 중등교사의 역할을 공감과 소통을 통한 꿈의 발견과 이의 실현을 위한 교과전문가로 여기고 있었다. 이러한 인식 형성은 경험과 이상의 불일치라는 과거 학교교육에 기인하는 것으로 나타났다. 본 연구 결론은 다음과 같다. 첫째, 21세기 예비교사들의 중등교사 역할 인식은 기존 교직관에 비추어 이해되어서는 안 되며 삶의 맥락에 주목한 지속적인 인식연구가 필요하다. 둘째, 예비교사들이 인식하는 중등교사 역할은 학교현장에서 요구되는 역할과는 다르며 이로 인해 이들이 학교현장에서 겪게 될 정체성혼란을 최소화하기 위한 중등교육 개선이 요구된다. 셋째, 예비교사들의 반성적 성찰자로서의 면모는 교사전문성을 위한 정체성 확립 및 교육개혁의 근간으로 예비교사 교육과정에서 이를 위한 다양한 지원을 제공해야 한다. 넷째, 임용고시준비로 운영되는 현 예비교사 교육과정에 대한 교수자, 예비교사들의 반성과 함께 제도적 차원에서의 개선이 필요하다.

• 한국과학교육학회지
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• 제31권2호
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• pp.164-180
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• 2011

본 연구에서는 초등 예비교사들에게 아동의 과학 개념을 직접 조사하고 분석하는 활동을 안내하고 수행하도록 하면서 과학 교수 학습의 원리에 대해 예비 교사들이 탐구적으로 접근할 수 있는 기회를 제공하였다. 예비교사들의 탐구 과정을 자세히 살펴보고 이 과정에서 어떠한 긍정적 학습 경험이 있었는지 알아보고자 하는 것이 이 연구의 목적이다. 연구 대상은 C 교육대학교 2개 분반 68명이며 매주 90분씩 15주간 진행되는 '초등과학교육2' 강좌에서 실시되었다. 총 20모둠으로 구성하여 모둠별 프로젝트 형식으로 탐구 활동이 진행되었으며 설문, 수업 녹화 비디오, 수업일지, 모둠의 최종 보고서, 심층 면담자료 등이 분석되었다. 데이터 분석은 다중 사례 분석 방법을 통하여 사례 내 자료 분석과 사례 간 자료 분석과정을 거쳤다. 연구 결과 예비교사의 탐구 과정에서 다음과 같은 주요한 긍정적 학습 경험이 관찰되었다. 첫 번째로 예비교사가 아동의 과학 개념 조사를 준비하는 과정은 자신의 과학 개념을 점검하고 수정, 보완하는 계기가 되었다. 두 번째로 면담 질문을 구체화하면서 예비교사의 질문 구성 능력이 향상되었다. 세 번째로 예비교사들은 아동의 과학 개념이 다양하고, 상황에 따라 불안정하다는 것을 인식하였다. 네 번째로, 예비교사들은 아동의 과학 개념에 대한 조사를 바탕으로, 구체적인 지도 방안을 도출할 수 있었다.

• 대한정형도수물리치료학회지
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• 제8권2호
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• pp.5-17
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• 2002

The aim of study carried out to determine the effects of myofascial release on the cranial arteries velocity from November 11, 2001 to March 29, 2002 the objects were 10 patients who having the tension-type headache at H-hospital This research compared with measure the mean flow velocity middle cerebral artery, posterior cerebral artery, vertebral cerebral artery. Result obtain were as follows; 1. Middle cerebral artery blood velocity between pre treatment and after treatment for 10days experiment was significantly increased 9.76cm/s(p<0.05)in right, 4.88cm/s(p<0.05)in left. 2. Posterior cerebral artery blood velocity between pre treatment and after treatment experiment was difference 6.35cm/s(p<0.01)in right, 5.14cm/s(p<0.01)in left, between pre treatment and after treatment for 5days experiment was 11.48cm/s(p<0.01)in right, 10.74cm/s(p<0.01)in left, between pre treatment and treatment for 10days experiment was 12.92cm/s(p<0.001) in right, 12.68cm/s(p<0.001) in left. 3. Vertebral artery blood velocity between pre treatment and post treatment experiment was difference 4.48cm/s(p<0.05)in right, 6.10cm/s(p<0.05) in left, between pre treatment and after treatment for 5days experiment was 12.50cm/s(p<0.001)in right, 14.40cm/s(p<0.001)in left, between pre treatment and after treatment for 10days experiment was 14.70cm/s(p<0.001)in right, 13.90cm/s(p<0.001)in left.