• 한국학교수학회논문집
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• 제10권1호
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• pp.1-25
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• 2007

최근 들어, 우리나라에서도 수학 교사의 전문성 신장을 위한 여러 가지 교사 재교육에 관한 관심이 점차 고조되고 구체적인 프로그램의 안이 모색되고 있다. 이에 따라 보다 근원적으로 전문성 있는 예비 교사 양성을 위한 효과적인 교원 양성 체제를 위한 연구 및 개선 방안이 모색되어야 할 것으로 사료된다. 이러한 취지하에, 본 연구에서는 30명의 중등 수학 교사들을 대상으로 설문 조사 방법을 이용하여 사범대학 수학교육과 재학 당시 어떠한 교육 내용이 다뤄졌는지, 또 그러한 교육 내용이 실제 현장에서의 수학 수업과 연관되어 활용되고 있는지 살펴보고자 한다. 그리고 향후 예비 교사 양성을 위하여 사범대학 수학교육과 교육과정에 어떠한 교육 내용이 필요한지를 살펴보고자 한다.

• Applied Biological Chemistry
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• 제39권6호
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• pp.419-423
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• 1996

SOS chromotest 방법을 이용하여 천연물에 포함된 항변이원성 물질의 활성을 정량화 할 수 있는 항변이원 활성단위 측정법을 개발하였다. 이 방법에 의하여 시료의 항변이원 활성을 특정 화학적 변이원이 유도하는 변이원성이 표준측정 조건하에서 50% 억제되는 시료의 양으로 수치화하는 것이 가능하게 되었다. 확립된 방법으로 쌀의 품종별 항변이원 활성 및 기타 곡류의 항변이원 활성을 조사하였다. 그 결과 변이품종 쌀인 자도와 향도가 취반용으로 사용되는 추청보다 항변이원 활성이 높았고, 일반적으로 검정콩이나 팥과 같은 잡곡의 항변이원 활성이 현미보다 높았다.

• Bulletin of the Korean Chemical Society
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• 제10권1호
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• pp.50-57
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• 1989

A pressure effect of the dehydrogenation of ethylalcohol catalyzed by alcoholdehydrogenase was observed in Tris-HCl buffer, pH 8.8 from $25^{\circ}C$ to $35^{\circ}C$ under high pressure system by using our new theory. The theory makes it possible for us to obtain all rate and equilibrium constants for each step of all enzymatic reaction with a single intermediate. We had enthalpy and volume profiles of the dehydrogenation to suggest a detail and reasonable mechanism of the reaction. In these profiles, both enthalpy and entropy of the reaction are positive and their values decrease with enhancing pressure. It means that the first step is endothermic reaction, and its strength decrease with elevating pressure. At the same time, all activation entropies have large negative values, which prove that not only a ternary complex has a more ordered structure at transition state, but also water molecules make a iceberg close by the activated complex. In addition to this fact, the first and second step equilibrium states are controlled by enthalpy. The first step kinetic state is controlled by enthalpy but the second step kinetic state is controlled by entropy.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권8호
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• pp.2732-2748
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• 2021

In post-COVID-19 pandemic era, students' learning effects and experience may sharply decrease when teaching is transferred from offline to online. Several tools suitable for online teaching have been developed to guarantee and promote students' learning effects. However, they cannot fully consider teacher-student interaction in online teaching. To figure out this issue, this paper proposes integrated media platform-based virtual office hours implementation for online teaching. Specifically, an integrated media platform (IMP) is first constructed. Then, virtual office hours (VOH) is implemented based on the IMP, aiming at increasing student-teacher interactions. For evaluating the effectiveness of this scheme, 140 undergraduate students using IMP are divided into one control group and three experimental groups that respectively contain text, voice and video modes. The experiment results indicate that applying VOH in the IMP can improve students' online presence and test scores. Furthermore, students' participating modes during VOH implementation can largely affect their degree of presence, which can be well classified by using principal component analysis. The implication of this work is that IMP-based VOH is an effective and sustainable tool to be continuously implemented even when the COVID-19 pandemic period ends.

• 한국학교보건학회지
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• 제24권2호
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• pp.141-154
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• 2011

Purpose: The purpose is to provide basic information for establishing improvements on performance-based pay's evaluation method of health teachers. Methods: For subjects, 200 teachers at public elementary schools and 200 health teachers at public elementary schools in Gyeonggi-do were conveniently sampled, and then surveyed through a questionnaire. The questionnaire was to recognize recognition of teachers working under the teacher's performance-based pay system, which was quoted in the questionnaire of Choi ji-hye (2005) and Lee mi-gyeong (2008). Inquiry for the recognition of teachers on evaluation of health teacher's performance-based pay system and improvements on the performance-based pay's evaluation method of health teachers were used after consultation with five incumbent health teachers and a review with the thesis director. Results: The performance-based pay's evaluation method of health teachers has the same method with general teachers in schools, so it is not fair to evaluate the performance of health teachers. The ways to improve the performance-based pay evaluation method of health teachers is as follows: first, the approval on improving 'the number of class hours' which is a detailed item of a teacher's performance evaluation criterion to 'the number of health lesson hours per week and the number of students visiting the school infirmary per week'; second, improving 'life guidance' into 'counseling results of medically-treated students, parents of students and personal hygiene guidance'; third, improving 'a teacher in charge' into 'awarding of points by being recognized as a health teacher in charge of all students and considering the economic situation of the region,; forth, improving 'difficulty of position' into 'the number of health-teacher's annual promotion task items and the treatment number of issuing and receiving of official documents', and improving the 'task difficulty' into 'importance and urgency of emergency patient management, risk level and urgency of infectious diseases and avoiding work in charge' appeared to be more than 90% respectively. Conclusion: The performance-based pay system of teachers being carried out every year should be executed by preparing fair evaluation criteria suitable for task properties and the role of health teachers with different evaluation criteria compared to general teachers.

• Bulletin of the Korean Chemical Society
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• 제26권11호
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• pp.1872-1874
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• 2005

• 대한가정학회지
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• 제43권10호
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• pp.141-153
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• 2005

This study investigated the relationships among personal characteristics(sex, self-concepts, depression, fear, internal locus of control), home environment(physical and psychological environment, parenting style, attachment to mother), school environment(teacher support, peer victimization), and Korean-Chinese children's aggression in Yanji, China. Two hundred and two(90 boys and 112 girls) 6th graders rated themselves on a questionnaire. Correlation analysis, and multiple regression were conducted using SPSS Window vers. 12. Alienation to mother, and overt and relational victimization by peers were positively related, and communication with mother was negatively related to children's proactive aggression. Alienation to mother, and overt victimization by peers were positively related, and communication with mother, support by teacher were negatively related to children's reactive aggression. Alienation to mother, and overt and relational victimization by peers were positively related, and communication with mother and support by teacher were negatively related to children's relational aggression. The factor with the greatest contribution to explaining the aggression of Korean-Chinese in Yanbin was the alienation to mother.

• 한국보건간호학회지
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• 제28권3호
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• pp.633-643
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• 2014

Purpose: The purpose of this study is to identify protective factors associated with school adjustment of victims in school bullying. Methods: Data were collected from 114 victims among 825 middle school students. The measurements were the self-report questionnaire on resilience, and the Childrearing Behavior Questionnaire, measurements of relationship with friends, and attitude of teachers toward bullying. Descriptive, Pearson correlation, and multiple regression analyses were used. Results: A significant relationship was observed between school adjustment of victims and resilience (r=.355, p<.01), warmth-acceptance parenting behavior (r=.482, p<.01), rejection-restriction parenting behavior (r=-.213, p<.01), and teacher's attitude toward bullying (r=.381, p<.01). The result of multiple regression analysis showed significant association of school adjustment with resilience (${\beta}$=0.247, p<.05), warmth-acceptance parenting behavior (${\beta}$=0.302, p<.001), and teacher's attitude toward bullying (${\beta}$=0.285, p<.01). Conclusion: Comprehensive interventions designed to enhance the resilience of students, improve warmth-acceptance parenting behaviors and teacher's attitude toward bullying may be helpful in promoting school adjustment of victims.

• 한국생활과학회지
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• 제20권3호
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• pp.561-582
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• 2011

The purpose of this study was to investigate the current status of pre-service curriculums for child care teachers at universities and colleges in Korea. To accomplish this, a survey was implemented to gather the lists of courses from each department training pre-service child care teachers. A total of 225 departments at universities and colleges across Korea participated in the survey. The results showed that the 37 different courses offered for child-care teacher licensure were different by school type (university or college) and major. Departments in colleges with specific majors such as early childhood education and social welfare offer courses that are also required for other certificates, including kindergarten teachers or social workers, so pre-service child care teachers may not have the opportunity to take courses specifically designed for their specific teaching needs or interests. Accordingly, there may be a restricted number of courses from which to choose during pre-service training periods. Based on the findings from this study, several political implications for improving child-care teacher professionalism were suggested.

• 한국생활과학회지
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• 제13권3호
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• pp.407-415
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• 2004

The purpose of this study was to investigate the effect of kindergarten's factors on athletic movement ability in early childhood. The factors included teacher's perception of athletic movement, length of time for physical activity, and number of athletic facilities in the kindergarten. The subjects consisted of 551 children aged from four to five years in 8 private kindergartens. The instruments used for this study were the obstacle course of Project Spectrum for measuring athletic movement ability, and the questionnaire to investigate the teacher's perception, length of time for physical activity, and number of athletic facilities in the kindergarten. The data from all the tests were analyzed by correlation and regression analyses. The results of this study exhibited that the length of time for physical activity was the most important factor among three factors, and the teachers' perception of athletic movement and the number of athletic facilities in the kindergarten were also deciding factors for the children's athletic movement ability.