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유아교사의 전문성 인식과 직무스트레스가 교사와 유아 간 상호작용에 미치는 영향
구자영(JAYOUNG, KU) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.6
최근 유아교육기관에서 유아들이 보내는 시간이 증가함에 따라 유아교사의 질적 향상이 그 무엇보다 중요한 문제로 부각되고 있다. 이에 본 연구는 유아교사의 전문성 인식과 직무스트레스가 교사와 유아 간 상호작용에 어떠한 영향을 미치는지 알아보기 위해 수행되었다. 연구대상은 어린이집과 유치원에 근무하는 유아 교사로 30개원 150명을 대상으로 설문지를 배포하였고, 총 134부의 설문지를 회수하여 SPSS 18.0 프로그램을 사용하여 자료를 분석하였다. 분석 결과, 첫째, 유아교사의 전문성 인식과 직무스트레스 사이에서 원장의 지도력 및 행정적 지원 부족이 교사의 전문성 인식에 영향을 미치는 것으로 나타났으며, 전문성 인식과 상호작용의 상관관계에서 언어적 상호작용과 행동적 상호작용이 정서적 상호작용의 영향을 받는 것으로 분석되었다. 둘째, 유아교사의 전문성 인식과 직무스트레스가 정서적 상호작용에 미치는 영향을 분석한 결과, 전문성 인식의 여러 하위변인 중 직업윤리와 전문적 지식과 기술 요구의 변인이 긍정적인 영향을 주어 교사와 유아 간 상호작용의 정서적·언어적·행동적 상호작용의 모든 변인에서 유의미한 영향을 미치는 것으로 나타났다. The Quality of Early Childhood Teachers has recently become More Important as the Amount of Time Spent by Early Childhood Educational Institutions Increases. The Purpose of this Study was to Investigate the Effects of Professionalism Awareness and Occupational Stress on Teacher and Child Interactions in Early Childhood Teachers. The Questionnaires were Distributed to 150 teachers in 30 Early Childhood Education Centers and 134 completed Questionnaires were Collected and Analyzed Using SPSS 18.0 Program. The Results of this Study are as Follows. First, the Lack of Leadership and Administrative Support Adversely Affects Teacher’s Professionalism Awareness. Behavior Interaction and Verbal Interaction among Teachers and Children are Influenced by Emotional Interaction. Second, analysis of the Influence of Professionalism Awareness and Occupational Stress on Emotional Interaction of Early Childhood Teachers revealed that Among the Sub-factors of Professional Awareness, the Variables of Work Ethics, Professional Knowledge and Technical Requirements Positively Influenced Affective, Emotional, Verbal, and Behavioral Interactions.
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구자영 韓國文獻情報學會 1992 圖書館學 Vol.23 No.1
The present study aims at a systematic access to EC information. EC information is the outcome of the complex organizations, the continuous changes in functions and the subsequent changes in policies. An attempt for an effective approach to the information requires the examination of the organizational structures and changes, the processes involved in formulating and implementing the information policies, and the infrastructure for information. Information activities of the major organizations of EC have been examined with a special reference to the Commission of European Communities. The Commission is the EC institution from which the majority of the EC's documentation originates. The information production and distribution, authorizing services, and information services to the public
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Amine-Reactive Poly(pentafluorophenyl acrylate) Brush Platforms for Cleaner Protein Purification
Son, Hyunjoo,Ku, Jayoung,Kim, Yoosik,Li, Sheng,Char, Kookheon American Chemical Society 2018 Biomacromolecules Vol.19 No.3
<P>Reactive pentafluorophenyl acrylate (PFPA) polymer brushes grafted on silica particles were prepared using surface-initiated reversible addition and fragmentation chain transfer polymerization. The polymer brush was successfully immobilized with antibody, then used for protein separation. The immunoprecipitated proteins showed successful enrichment of target protein, with reduced nonspecific background and less contamination from eluted antibodies. To further improve protein recovery, the hydrophobic poly(PFPA) brush was modified with hydrophilic poly(ethylene glycol) (PEG). The partially PEG-substituted poly(PFPA) brush showed better dispersion in aqueous solution, leading to improved antibody immobilization efficiency. By optimizing both the brush molecular weight and the degree of PEG substitution, an optimal balance between surface hydrophilicity and number of available PFP units was found, leading to efficient target protein purification. This study shows that poly(PFPA) platform offers a versatile approach to prepare biomolecule-activated surfaces with tunable surface property, which has potential applications in protein separation and other areas.</P> [FIG OMISSION]</BR>
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Patterning potential of the terminal system in the Drosophila embryo
이건용,Kate Molloy O'Neill,Jayoung Ku,Stanislav Yefimovic Shvartsman,김유식 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.2
Segmentation of the Drosophila embryo is initiated by localized maternal signals. In this context, anteriorly localized Bicoid activates the gap genes in the anterior half of the embryo while posteriorly localized Nanos represses the translation of maternal hunchback mRNA to pattern the posterior half. The non-segmented termini are patterned by the localized activation of mitogen-activated protein kinase. Yet, the spatial extent of the terminal patterning system in regulating gap genes beyond poles remains unknown. We investigated the patterning potential of the terminal system using mutagenized embryos that lack both the anterior and the posterior maternal signaling systems. Using a combination of quantitative imaging and mathematical modeling, we analyzed the spatial patterns of gap genes in the early Drosophila embryo. We found that this mutant embryo develops symmetric cuticle patterns along the anteroposterior axis with two segments on each side. Notably, the terminal system can affect the expression of Krüppel in the torso region. Our mathematical model recapitulates the experimental data and reveals the potential bistability in the terminal patterning system. Collectively, our study suggests that the terminal system can act as a long-range inductive signal and establish multiple gene expression boundaries along the anteroposterior axis of the developing embryo.
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