• 산업융합연구
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• 제21권10호
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• pp.57-63
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• 2023

평활근 수축에 대한 감초산(glycyrrhizic acid)의 효과를 연구하고자 하였고 관련 상세 기전을 결정하기 위해 glycyrrhizic acid가 agonist-sensitive하게 평활근 수축한다는 가설을 제시하였다. S/D rats의 평활근을 수조 내 준비하였고 신호 변환기에서 평활근에 의한 운동 신호가 전기적 신호로 변환되어 생리기록기에 표시되는 데이터는 일원배치 분산분석으로 분석하였다. 재미있게도, 감초산은 불화물, 트롬복산 유사체 등 굵은 미세섬유성 조절성 수축제에 의한 평활근 수축을 중등도로 억제하였고 (농도 0.01, 0.03, 0.1 mM 불화물에서 p=0.113, 0.008, 0.004 (Student's t-test), p=0.113, 0.008, 0.004 (One way ANOVA), 그리고 0.01, 0.03, 0.1 mM 트롬복산 유사체에서 p=0.156, 0.004, 0.003 (Student's t-test), p=0.156, 0.004, 0.003 (One way ANOVA)) 포볼 에스테르 등 가는 미세섬유성 조절성 수축제에 의한 평활근 수축에 대해 효과가 소실되었다 (0.01, 0.03, 0.1 mM 포볼 에스테르에서 p=0.392, 0.086, 0.065 (Student's t-test), p=0.392, 0.086, 0.065 (One way ANOVA)). 이러한 결과는 내피 기능이 억제된 평활근에서 감초산은 평활근 내피에서 EDRF (NO) 생성 효과 외에 주로 ROCK 활성 감소 등 평활근에 대한 직접적 효과를 통해 최종적으로 평활근에서 악틴-미오신 상호작용을 제한하여 평활근을 이완시키는 것으로 생각된다.

• 한국의상디자인학회지
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• 제12권4호
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• pp.159-171
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• 2010

The purposes of this study is to find middle school student's application of Clothing & Textiles Section in Technology-Home Economics. The samples are 298 middles school students in Kangneung. For the statistics analysis of this study, frequency, mean, Cronbach's ${\alpha}$ coefficient, one way ANOVA, t-test were calculated. The results of this study are summarized follows; 1) Middle school student's application of Clothing & Textiles Section is relatively low. Middle school student's need of Clothing & Textiles Section and recognition of Technology-Home Economic are relatively high. But Middle school student's preference of Technology-Home Economic is relatively low. 2) Variables that affect middle school student's recognition of Technology-Home Economic are number of sibling and sibling ranking. 3) Variables that affect middle school student's need of Clothing & Textiles Section are recognition and preference of Technology-Home Economic. 4) Variables that affect middle school student's application of Clothing & Textiles Section are recognition and preference of Technology-Home Economic and need of Clothing & Textiles Section.

• 한국수학교육학회지시리즈A:수학교육
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• 제62권1호
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• pp.151-173
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• 2023

본 연구에서는 고등학생의 수학에 대한 정의적 태도에 영향 미치는 요인을 학교 수학 수업, 학교 수학 평가, 수학 교과서, 수학 사교육, 진학과 진로, 사회 분위기의 측면에서 다각도로 살펴보았다. 학년과 전공, 학업성취도, 성별, 학교 소재지에 따른 고등학생 1,029명을 대상으로 설문조사를 수행하였으며, 그 결과에 대해 SPSS ver 29.0을 이용한 기술통계량, t 검정과 ANOVA, 카이제곱 검정을 실시하였다. 분석 결과, 첫째, 학생 전체적으로 진학과 진로 및 학교 수학 수업이 수학에 대한 정의적 태도에 영향을 미치는 것으로 나타났다. 둘째, 학생의 학업성취도와 성별에 따라 정의적 태도에 영향 미치는 요인에 통계적으로 유의미한 차이가 나타났다. 셋째, 학생 변수에 따라 수학에 대한 정의적 태도에 영향 미치는 각 요인의 세부항목에 대한 학생 반응에 차이가 있었다. 본 연구는 고등학생의 수학에 대한 정의적 태도 개선을 위해 수학 수업 방식의 다양화, 수학 교과서 개선, 수학 사교육에의 올바른 참여, 진학과 진로에서 수학의 활용성 및 사회에서 수학의 중요성에 대한 학생의 인식 개선, 부모의 정서적 지지가 필요함을 제안한다.

• 한국항공운항학회지
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• 제28권3호
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• pp.41-51
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• 2020

This research is accomplished to verify objectively how flight instructor's transformative leadership affects student pilot's psychological stabilities and learning satisfactions. Flight instructor's transformative leadership factor divided into individual consideration, intellectual stimulus and charisma from exploring factor analysis. Psychological stability factor subdivided into happiness, concentration and satisfaction. Learning satisfaction factor subdivided into participation, recommendation, persistence, accomplishment and relationship. According to the analysis of flight instructor's transformative leadership effect on psychological stability, it showed that it has statistical significance on happiness, concentration and satisfaction. It also has positive influence on happiness and concentration. The result from regression analysis showed that individual consideration and charisma affected happiness and concentration in order. However, satisfaction from individual consideration, intellectual stimulus and charisma didn't show statistical significance to student pilot's satisfaction. Analysis of flight instructor's transformative leadership on student pilot's learning satisfaction showed statistical significance between them. Intellectual stimulus and charisma had positive influence on student pilot's learning satisfaction. Regression analysis showed charisma and intellectual affect student pilot's learning satisfaction in order.

• 한국응용과학기술학회지
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• 제38권6호
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• pp.1667-1677
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• 2021

본 연구는 헤어 미용 전공 대학생의 전공만족도가 미용전문직관에 미치는 영향을 분석함으로써 헤어 미용 전공 대학생들의 전공만족과 전문직관의 관계를 알아보고자 하였다. 연구결과 헤어 미용 전공 대학생의 전공만족도와 미용전문직관 간에 정(+)의 상관관계가 있는 것으로 나타났고(p<0.001), 전공만족은 '전문성' t=4.625(p=.000), '직업인식' t=3.152(p=.002)로, 전공가치는 '전문성' t=2.330(p=.021), '전문활동' t=2.438(p=.015), '직업인식' t=4.843(p=.000)으로, 대학생활적응은 미용전문직관의 하위요인인 '전문활동' t=2.746(p=.006), '직업인식' t=4.303(p=.000)으로 나타나 헤어 미용 전공 대학생의 전공만족도는 미용전문직관에 유의한 영향을 미치는 것으로 나타났다. 헤어 미용 전공 대학생에게 있어 전공만족은 대학 및 전공학과에 대한 만족뿐만 아니라 자기 자신에 대한 만족 및 헤어 미용 직무 자신감으로 이어져 긍정적인 영향으로 사회생활을 적응할 수 있게 해주며, 미용전문직관은 헤어 미용 직업에 대한 가치관과 태도로 미용 전공 대학생 때 전문직관이 생기게 된다. 연구결과를 통해 헤어 미용 전공 대학생들의 긍정적인 전문직관의 형성과 전공만족도를 높이고 올바른 이론과 실기교육을 통해 미용전문직관이 확립될 수 있도록 학생들의 자기계발과 더불어 교수 및 교육관계자들의 전문직업 윤리와 가치관에 관한 교육과 지속적인 지도가 필요하다고 사료된다.

• 한국학교보건학회지
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• 제30권3호
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• pp.224-239
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• 2017

Purpose: Maintaining a lifelong health is very important. The purpose of this study is to know the perception of youth about health teacher's servant leadership, student's self-efficacy, and health promoting behavior, and the relationship among the variables. Methods: This study used surveys of health teacher's servant leadership, student's self-efficacy, and health promotion behaviors. The subjects were 1,286 elementary, middle and high school students. PASW Statistics 18.0 was used in the data analysis. Percentage, mean and standard deviation, t-test, and ANOVA test were used to compare the difference of the health teacher's servant leadership, student's self-efficacy, and health promotion behavior according to the background variables of the subject. Results: There was a statistically significant difference in the perception of youth about health teacher's servant leadership, student's self-efficacy, and health promotion behaviors according to school level, establishment type, and grade. There was also a statistically significant difference in the perception of youth about student's self-efficacy and health promotion behaviors between male and female student. In addition, student's self-efficacy serves as a positive mediator to the effects of health teacher's servant leadership on student's health promoting behavior. Conclusion: Based on these results, it needs to implement the human resources and policy support for the systematic health education of elementary, middle, and high schools, the development of the program for the teacher's servant leadership, and the health promotion of students in curriculum.

• 복식
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• 제41권
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• pp.153-168
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• 1998

The purpose of this study is to examine, specifically, the external and internal characteristics of anti-fashion expression in the Korean student movement after the 1945 Liberation. The dress expressed in the student movement represented the purity of student and characterized resistance, and this character expressed strongly in 80s, faded from middle of 90s. Until the 60s, the student movement was not characterized by, so activist students wore dress and suits. It symbolized students as an elite group of society. They added on head-bands to express resistance. In the 70s, activist students wore school uniforms, school military training wear, blue jeans and loose shirts in demonstrations. They tried to express re-bellion against the government and the older gen-eration. In the 80s, the period was remarkably distingusihing by the economic growth at that time. Activist students wore T-shirts with Korean letters and popular paintings specially made, Korean costumes, wrapped in the Taggeuki (Korean national flag), and refused wear on jeans because of anti-Americanism. They also wore masks, muffled their faces, and got their heads shaved. These anti-fashions are very strong expressions for the national independence spirit, national traditional heitage, anti-foreign power and anti-American. In the early 90s, activist students wore reformed Korean costumes specially made group uniforms, after that they wore casual everyday clothes with caps. They tried to express remarkable resistance in the early 90s, but after the mid-90s expression of resistance weakened and faded, so there was no distinction between activist and non-activist. There are the reasons why the student movement changed after the peaceful transfer of political power.

• STI Policy Review
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• 제9권1호
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• pp.99-132
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• 2018

Developing countries face numerous challenges in the process of building science, technology, and research capacity; in particular, the formation and accumulation of skilled S&T workforce. The lack of organized and sustainable higher education options (Master and Doctoral programs), nonexistent or low-quality academic programs, and the absence of research-oriented study options are some of the strong contributors for talented students to emigrate to developed countries. At the same time, the consolidation of a global knowledge economy, the internationalization of higher education, and the competition to attract foreign talent in industrialized countries present challenges for underdeveloped nations to retain their already scarce skilled human resources. In this context, student mobility has been used as a policy mechanism to cope with S&T workforce shortages in S&T laggard nations. It has also enabled opportunities for international cooperation to play a key role. While significant literature has been devoted to studying the gains of developed nations with the arrival and potential migration of the mobilized students, few scholarly inquiries have addressed the benefits and losses experienced by their countries of origin. More importantly, limited research can be found on policy options and policy implications for developing countries to deal with the dilemmas presented by the brain-drain/brain-circulation debate. The goal of this article is to study empirical evidence of an international cooperation initiative for student mobility between the Republic of Korea and Guatemala (implemented during 2009-2015). The paper analyzes this particular international cooperation experience from the perspective of the different actors involved and attempts to draw policy implications and policy options for developing countries to deal with potential risks and gains derived from international mobility for their S&T capacity building.

• Communications for Statistical Applications and Methods
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• 제30권2호
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• pp.163-178
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• 2023

GARCH-X(1, 1) model specifies that conditional variance follows an AR(1) process and includes a past exogenous variable. This study proposes a new class from that model by allowing a more general (non-linear) variance function to follow an AR(1) process. The functions applied to the variance equation include exponential, Tukey's ladder, and Yeo-Johnson transformations. In the framework of normal and student-t distributions for return errors, the empirical analysis focuses on two stock indices data in developed countries (FTSE100 and SP500) over the daily period from January 2000 to December 2020. This study uses 10-minute realized volatility as the exogenous component. The parameters of considered models are estimated using the adaptive random walk metropolis method in the Monte Carlo Markov chain algorithm and implemented in the Matlab program. The 95% highest posterior density intervals show that the three transformations are significant for the GARCHX(1, 1) model. In general, based on the Akaike information criterion, the GARCH-X(1, 1) model that has return errors with student-t distribution and variance transformed by Tukey's ladder function provides the best data fit. In forecasting value-at-risk with the 95% confidence level, the Christoffersen's independence test suggest that non-linear models is the most suitable for modeling return data, especially model with the Tukey's ladder transformation.

• 수산해양교육연구
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• 제24권6호
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• pp.977-988
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• 2012

The purpose of this study was to help teachers increase the level of student's school life satisfaction by comparing between the practical data of a group which have an accordant perception for class teacher's discipline style perceived by between teacher him/herself and student with another group which have a discordant perception for class teacher's discipline style perceived by between teacher him/herself and student. For this study, 1460 second grade special high school students in Pusan were selected. And 1273 students and 56 teachers' questionnaires were used for analysis, while 5 questionnaires went uncompleted. T-test and Multiple Regression Analysis were used for compiling statistics of collected data. The results of this study are as follows: First, perceptions about the teacher's discipline style perceived by between teacher him/herself and student were different. Second, the levels of student's school life satisfactions were different by two group. A group which has an accordant perception for class teacher's discipline style perceived by teacher him/herself and student shows the high level of school life satisfaction than B group which has an discordant perception. Last, class teacher's discipline style which affects the level of student's school life satisfaction was different by the two group. These results suggest that to increase the level of student's school life satisfaction, class teachers have to a mutual understanding first, and then approach their students with different discipline style by the level of their interactive relationship with their students.