• School Mathematics
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• v.10 no.4
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• pp.649-669
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• 2008

The study focuses on what to consider and do for the improvement of math education of Korea by comparing two general high school students' and two specialized high school students' beliefs about mathematics and mathematics learning. The major topics compared in the beliefs are composed of perception of mathematics as a science, learning methods of mathematics. The results of the study show that two general high school students tend to set more low value on mathematics, especially in the value of implement, civilization, utility of mathematics than that of two specialized high school students.

• Journal of The Korean Astronomical Society
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• v.39 no.2
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• pp.51-56
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• 2006

We report the development of a semi-VLBI observation system operating at 21 cm and present the measurement of visibility function toward the sun using this system. The system consists of two 2.3 meter antennas with a maximum separation of 35 meter, a conventional high speed data acquisition system, and a set of programs for software correlation. Since two local oscillators of receiver modules are independent, data had to be fringe-fitted to yield the visibility amplitude. It is found that the visibility amplitude decreases and then bounces back as baseline increases. We confirm that solar disk with brighter limb best explains the measured visibility amplitude.

• Journal of The Korean Association For Science Education
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• v.26 no.5
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• pp.611-619
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• 2006

The aims of this study are to investigate science high school students' understanding of velocity and acceleration of a simple pendulum bob, and to investigate their understanding of inertia and gravitational force in the motion of a pendulum bob when the tension is removed. For the study, 46 students that had already studied the physical, concepts in simple pendulum were sampled from a science high school in a large city in Korea. For a comparison with general high school students' conceptions, 49 students were sampled from a general high school in the same city. The test tool for the investigation consisted of four drawing and simple-answering type questions developed by the authors. The outcomes of the study revealed that a substantial number of science high school students have misconceptions concerning acceleration in pendulum motion, and that many of them do not understand the relationship between force and acceleration. In addition, the results of the study showed that more than 30% of the students drew the path of a bob going along the tangential direction at the highest point of the motion, and approximately 20% of them drew the path of a bob falling straight down at the lowest point of the motion.

• Journal of Fisheries and Marine Sciences Education
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• v.16 no.1
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• pp.50-59
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• 2004

Recently, many more fisheries and shipping high school students have entered college than those of the past. But, this trend could be attributed to the easy and various forms of selection for college admission. Thus the examinations of the college scholastic ability 2005 have added to the vocational search ability including verbal ability, mathematic ability, foreign language ability and inquiry ability. The vocational search ability in fisheries and shipping field is concluded the general fisheries science, general maritime science, general marine science and fisheries and shipping information management. This study analyzed the questions of the fisheries and shipping subject of vocational search field with high school 2nd students on October 2003. In result, this study identified some needed basic scholastic ability for fisheries and shipping high school students.

• Journal of the Korean Data and Information Science Society
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• v.23 no.6
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• pp.1173-1181
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• 2012

In order to suggest the basic resources of mathematics education to the specialized high school, we investigate the attitude of students about mathematics education. Questionnaires survey was carried on 654 students and we use the statistical analysis such as chi-square test, gamma, generalized linear model, Anova, regression. Several result can be derived from the questionnaire analysis. There are differences between the general and specialized high school students in the interest, pre-learning ability etc. The specialized school students think the usefulness of mathematics more importantly, while the general school students think more closely related to their course.

• Journal of environmental and Sanitary engineering
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• v.22 no.2
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• pp.53-60
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• 2007

A pilot study was conducted in order to investigate the concentration of formaldehyde at elementary school, middle school, the high school (108 classrooms) located in Chungchong-namdo during February - September, 2006. Also, divide by (45 classroom) General Classroom and (63 classrooms) Stateroom. The average concentrations of formaldehyde(HCHO) in the general classroom was high by $22.87\;{\pm}\;20.61\;{\mu}g/m^3$ elementary school, $22.08\;{\pm}\;12.70\;{\mu}g/m^3$ high school, $13.58\;{\pm}\;6.60\;{\mu}g/m^3$ middle school. The average concentrations of formaldehyde(HCHO) in the Stateroom was high by $27.58\;{\pm}\;30.5{\mu}g/m^3$ elementary school, $22.03\;{\pm}\;19.12\;{\mu}g/m^3\;22.87\;{\pm}\;20.61\;{\mu}g/m^3$ middle school, $24.92\;{\pm}\;28.15\;{\mu}g/m^3$ high school. There was correlation between formaldehyde concentrations and temperature, humidity in general classroom (P<0.05).

• Journal of the Korean Society of School Health
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• v.23 no.1
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• pp.41-52
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• 2010

Purpose: The objective of this study is to investigate the relationship between middle and high school students' internet addiction, social support, self-efficacy and school life adjustment. Data were collected by self-administered questionnaires at middle and high school students located in Seoul and the metropolitan areas. Methods: The response rate is 94.8% (474 cases). The internet addition was measured by K Scale. The various methods of analysis were used, for example, frequency analysis, t-test, analysis of variance, and multiple regression analysis. Results: First, the mean score of internet addiction level is 2.07 in 5 Likert scale. the internet addiction level of the male students are higher than female students (p<.05). Second, as a result of classification of internet addiction groups by K Scale, 11 students (2.3%) are included in high risk group, 27 students (5.7%) are in potential risk group, 436 students (92.0%) are in general group. Third, the level of social support and self-efficacy of middle and high school students are very high. The difference of social support by internet addiction groups was not statistically significant. But, the difference of self-efficacy by internet addiction groups was statistically significant. The level of self-efficacy of the students in general groups are more higher than in high risk group and in potential risk group (p<.01). Fourth, the difference of school adjustment by internet addiction groups was very statistically significant. The level of school life adjustment of the students in general groups are more higher than in high risk group and in potential risk group (p<.01). Fifth, the internet addiction have a negative correlation with school life adjustment. And the social support and self-efficacy have a positive correlation with school life adjustment (p<.01). Finally, in stepwise multiple regression analysis, the internet addiction affects negatively on the school adjustment. And the support of teacher among three types of them affects positively on the school life adjustment. And the social self-efficacy among two types of them affects positively on the school adjustment (p<.01). Conclusion: to adjust desirably the school environment of the middle and high school students, optimal and efficient management of internet addiction was needed in the future and the improvement and promotion of social support and social self-efficacy of the students was also demanded.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.404-406
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• 2022

In this study, a data science class plan was designed for the high school credit system in general high schools. Since it is difficult to secure class hours in elementary and middle schools or general high schools, learners cannot freely take new subjects such as data science. Therefore, a lesson plan was designed based on the ADDIE model for 15 students who applied for data science at general high schools in A city. Through this study, it was possible to design the data science class according to the learning method.

• The Journal of Economics, Marketing and Management
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• v.10 no.1
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• pp.1-14
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• 2022

Purpose: The purpose of this study is to analyze the measurement results of the financial comprehension test conducted ten times in order to study the financial comprehension. Research design, data, and methodology: In this study, correct answer rates in the Economics and Finance Literacy Certification Test were analyzed across ten rounds of tests taken by 6,662 high school students in Korea. Result: The analysis revealed that Korean high school students' level of financial literacy generally increased as the grade level increased, and the correct answer rates of students at autonomous high schools and special-purpose high schools were statistically different from those of students at general academic high schools and specialized high schools. Conclusion: We can therefore infer that students at specialized high schools face limitations in tackling financial problems due to their lack of proficiency in interpretation and calculation of data necessary for real life financial decision-making. In contrast, students at general academic high schools, special-purpose high schools, and autonomous high schools who do not learn finance as a part of their official curriculum at school were lacking in basic financial knowledge as well as knowledge about the financial system compared to students at specialized high schools, highlighting the need for a measure to address the deficiency.

• Journal of The Korean Astronomical Society
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• v.41 no.3
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• pp.77-81
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• 2008

As a continuation of a previous work by Park et al. (2006), we have developed a two-element radio interferometer that can measure both the phase and amplitude of a visibility function. Two small radio telescopes with diameters of 2.3 m are used as before, but this time an external reference oscillator is shared by the two telescopes so that the local oscillator frequencies are identical. We do not use a hardware correlator; instead we record signals from the two telescopes onto a PC and then perform software correlation. Complex visibilities are obtained toward the sun at ${\lambda}\;=\;21\;cm$, for 24 baselines with the use of the earth rotation and positional changes of one element, where the maximum baseline length projected onto UV plane is ${\sim}\;90{\lambda}$. As expected, the visibility amplitude decreases with the baseline length, while the phase is almost constant. The image obtained by the Fourier transformation of the visibility function nicely delineates the sun, which is barely resolved due to the limited baseline length. The experiment demonstrates that this system can be used as a "toy" interferometer at least for the education of (under)graduate students.