• Journal of Science Education
• /
• v.35 no.2
• /
• pp.119-126
• /
• 2011

The purpose of this study was to examine the effects of experimental learning using the small-scale chemistry (SSC) on high school students' academic achievement, scientific attitude and science-related attitude in high school chemistry I. For this study, two high school 2nd grade classes were divided into an experimental group and a control group. Experimental learning using the SSC in the experimental group, traditional experimental learning presented in the textbook in the control group were performed. The results showed that experimental learning using the SSC compared to traditional experimental learning was effective in improving academic achievement. The experimental learning also was effective in improving voluntary, patience, cooperativity in the scientific attitudes and social implications of science, attitude for science curriculum, attitude toward science in the science-related attitudes. Therefore, experimental learning using the SSC is necessary to actively utilize in high school chemistry curriculum.

• Korean Educational Research Journal
• /
• v.40 no.1
• /
• pp.43-57
• /
• 2019

The purpose of this study is to analyze the relationship between parental perfectionism, academic stress, and life satisfaction among high school students. For this purpose, 290 high school students from the P region were surveyed. We performed a t-test to see if there were significant differences in students' life satisfaction and perceived academic stress between the low parental perfectionism group and the high parental perfectionism group. The results of the study are as follows. First, the low parental perfectionism group reported a significantly higher level of life satisfaction than high parental perfectionism group. Second, the relationship between perceived parental perfectionism and students' academic stress was significant, which shows that the high parental perfectionism group perceived a higher level of academic stress than the low parental perfectionism group. The results indicate that parents' perfectionistic tendencies can lead to higher levels of academic stress of their children, which also can reduce their life satisfaction.

• Korean Educational Research Journal
• /
• v.40 no.3
• /
• pp.1-16
• /
• 2019

The purpose of this study is to explore the factors related to high school students 'academic stress. This study uses data from KEDI's(KELS 2013 6th). The data were analyzed using descriptive statistics, Pearson correlation analysis, and hierarchical analysis using the SPSS Statistics program. The results of the study are as follows. First, personal factors, social support factors, and family-related factors showed statistically significant correlation with academic stress. Second, personal factors, family-related factors, and social support factors were all found to have statistically significant effects on high school students' academic stress. After controlling the personal factors and family-related factors, the social support factors further explain the academic stress of high school students by two percent, and the most influential variable among social support factors was the relationship with their parents.

• Korean Journal of Construction Engineering and Management
• /
• v.22 no.3
• /
• pp.69-78
• /
• 2021

Estimated construction cost is an important index to secure an optimal budget which needs to go into construction projects in the previous of basic design phase. In order for public institutions to calculate the estimated construction cost, the cost per unit area of public buildings is used. However, the current calculation method of the estimated construction cost in public buildings is impossible to reflect the characteristics of many facilities and combinations. The purpose of this study is to develop an estimation model in the previous of basic design phase for the elementary, middle and high school facilities. it is expected that it is possible to estimate the construction cost of the elementary, middle and high schools in a reasonable and reliable manner through the estimation model developed in this study.

• Journal of Science Education
• /
• v.48 no.2
• /
• pp.101-110
• /
• 2024

This study compares two analogical models employed in the instruction of cosmic expansion to assess their impact on the comprehension of middle and high school students. Among the most frequently used models, the balloon model, in which the surface of a balloon represents the Universe, and the bread model, in which the bread itself symbolizes the Universe, were chosen. Using the balloon model, students are required to conceptualize the 2-dimensional surface as representing a higher-dimensional space. Using the bread model, students need to visualize the Universe as the interior of the bread prior to slicing it. For middle school students who had not yet studied cosmic expansion, the balloon model proved more effective in conveying the fundamental scientific concept that the expanding Universe has no center. High school students, who were already familiar with the concept of expansion without a center from previous lessons, found it easier to map the analogy onto the target using the bread model. Based on these results, we conclude that employing multiple models is necessary to complement any single analogy, given its inherent limitations.

• Journal of Science Education
• /
• v.36 no.1
• /
• pp.130-138
• /
• 2012

The purpose of this study was to investigate perceptions of high school students and science teachers about high school fusing science. Science teachers and high school students perceived that high school fusing science was related to various areas and they preferred to be taught separately from each area. Science teachers perceived that high school fusing science improved the understanding in the area of scientific common knowledge, advanced technology, and the history of science, but neither scientific writing nor discussion were actively involved. It also didn't contribute to the enhancement of scientific thinking and communication skill. Especially, high school students believed that they were more interested in science through fusing science. On the other hand, teachers believed that this high school fusing science might not impact student's learning and generate negative perception. Science teachers and students perceived that they were more interested in fusing science because it was combination of many areas in science. They also perceived that contents in fusing science were more related to their daily life.

• Journal of Wind Energy
• /
• v.14 no.4
• /
• pp.87-97
• /
• 2023

Due to the limitations of onshore wind power, the wind power industry is currently transitioning to offshore wind power. There has been active research on the development of a floating LiDAR system (FLS) that is easy to install at a low cost. The Carbon Trust published a commercialization roadmap for FLS in 2013, and an updated version was released in 2018, taking into account industry experience. The roadmap divides the development maturity of FLS into three stages: Stage 1 (prototype), Stage 2 (pre-commercialization), and Stage 3 (commercialization), each of which requires availability and accuracy assessment. The results must meet the requirements of the Key Performance Index (KPI) for each stage. Therefore, when developing FLS, the motion compensation algorithm of the FLS is essential because the LiDAR can produce incorrect measurements of wind speed and direction due to the six degrees of freedom in motion. In this study, we implemented the FLS motion compensation algorithm developed by Nassif, F.B. et al. and validated it using data provided by Fraunhofer. In conclusion, the results showed that the determination coefficients of wind speed and wind direction were improved compared to those obtained from the met mast.

• Proceedings of the KAIS Fall Conference
• /
• 2010.05b
• /
• pp.1053-1056
• /
• 2010

이 연구는 중고등학생들의 혈액형이 뇌 기능 및 좌우뇌선호도와 관계가 있는지를 개인이 지닌 뇌신경 생리학적 지표인 뇌파 측정을 이용하여 비교 하여 보았다. 대상자는 2005년 9월에서 2008년 12월까지 한국정신과학연구소에 뇌파측정 의뢰한 중고등학생을 기준으로 선정한 자료이다. 중학생 여 628 남 1002 고등학생 여 213 남365 총 2208명이다. 중학생 혈액형 분포도는 A>B>O>AB형 순이었다. 분석의 결과 중고등학생의 혈액형과 좌우뇌선호도와는 무관 하였다. 그리고 혈액형과 중고등학생의 뇌 기능과도 무관하였다. 위의 결과를 종합하면 혈액형과 지능이나 성격을 함부로 연관 지어 편견이나 차별을 유도하는 것은 바람직하지 않다고 본다.

• Korean Educational Research Journal
• /
• v.40 no.1
• /
• pp.1-16
• /
• 2019

The purpose of this study is to explore the relationship between parental attitudes, teachers' autonomy support as perceived by high school students, and the self-directed learning abilities of high school students. A total of 341 high school students from South Korea participated in the study. A survey instrument was used to measure parental attitudes, teacher autonomy support, and students' self-directed learning ability. The results of the study are as follows. First, the rearing attitudes of parents were perceived by the participants as oriented more toward being attainable and relatively less self-directed. There were no significant differences between male and female students, though male students were more likely to perceive their parents' attitudes as more attainable-oriented. The results also show that, in terms of self-directed learning skills among high school students, the more goal-oriented, compassionate, and autonomous the parental attitudes are, the likelier are students to have developed self-directed learning skills. Second, the male students were more aware of the autonomy support of teachers than were the female students. This shows that the results have significant predictive power over the self-directed learning ability among high school students. Accordingly, the perception of autonomy support by teachers affects the development of self-directed learning among students. We can therefore conclude that self-directed learning skills develop most effectively in students who are supported by their teachers.

• Journal of Science Education
• /
• v.37 no.2
• /
• pp.405-415
• /
• 2013

The purpose of this study was to investigate high school students in natural science track and engineering major university students' perceptions about the writing and composition education. A total of 318 high school students in natural science track from two high schools in a metropolitan area and 447 university students majoring in engineering from three universities participated in the survey and asked to response their perceived status and needs of writing education for science-engineering track. The survey instrument, developed by Lee et al.(2009), was used for this study. The data was analyzed through the SPSS 18.0 program for Windows for Multiple Response Frequency Analysis, Descriptive Statistics, Independent Samples t-test, and One-way Analysis of Variance. The results indicated that high school students relatively perceived that writing education was less necessary compared to university students. In addition, high school students found writing less difficult than university students do. In related to studying their experience with writing and composition education, almost no high school students have taken writing classes and university students have taken an average of one class. Most university students who took writing classes took basic writing classes that were not programmed for students in Science and Engineering. In the basic survey to revitalize writing and composition education for Science and Engineering students in different majors, the level of writing and composition education required by students in each major was different. Writing was considered most necessary for students majoring in Chemical Engineering, followed by students majoring in Mechanical Engineering and Electronic Engineering. The study of writing and composition education for high school and college should extend to studies on teachers or professors who teach writing, studies on contents and methods of writing education, and studies on the development of writing programs for different majors in university.