• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2006.09b
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• pp.1323-1324
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• 2006

Refractory materials, such as W and Mo, are very useful elements for use in high-temperature applications. But it is not easy to fabricat pure W and Mo with very high density and retaining very fine grain size because of their high melting point. In this paper, a newly developed method named as resistance sintering under ultra high pressure was use to fabricate pure fine-grained W and Mo. The microstructure was analysis by SEM. The sintering mechanism is primary analyzed. Basic physical property of these sintered pure W and Mo, such as hardness, bend strength, are tested.

• Journal of Gifted/Talented Education
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• v.20 no.3
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• pp.885-899
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• 2010

The purpose of this research project is to explain why high-achieving high school students in our country do or do not choose a science major and to explore gender differences. First-year students attending science high schools and international high school participated, responding to open-ended questions on science activities, self-concept of strengths for science learning, and rationales for choosing or not choosing a science major. For high- achieving students, it is shown that intrinsic interest has the greatest correlation with choosing a science major, with the next important influence being self-efficacy. On the other hand, in not choosing a science major, the lack of self-efficacy has a greater correlation than the lack of intrinsic interest. Self-concept in science-learning and science activities occurring outside of school classes are also compared and analyzed, and implications are discussed from educational and policy viewpoints.

• Proceedings of the KIEE Conference
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• 2003.07e
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• pp.10-18
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• 2003

A point of doing this research is to give basic data for junior college having matriculation resources in department of electricity majority to the graduate students from Technical high school in department of electricity. We have examined the effect of the 6th and the 7th educational curriculum and courses in department of electricity on technical high school, and analyzed basic subjects of technical high school and detailed major basis subject of junior college in department of electricity by Educational courses and mathematics education contents. Also we have examined tried to secure advantage of major studying on the basis of result of analysis.

• Journal of Gifted/Talented Education
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• v.22 no.2
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• pp.317-332
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• 2012

We investigated brain activity during the performance of the intelligence task by a science high school student group (n=8) and a foreign language high school student group (n=5). Both groups scored in the top 1% on intelligence tests (science high school group: RAPM mean score=34.0, WAIS mean IQ=139.6; foreign language high school group: RAPM mean score=33.8, WAIS mean IQ=147.2). Analysis of brain activity during the performance of the intelligence task showed that both groups had brain activity in certain areas, including the left and right prefrontal cortex, parietal cortex, and anterior cingulate. The science high school group showed the highest activity in the right parietal cortex, which is related to visuo-spatial working memory, whereas the foreign language high school group showed the highest activity in the left prefrontal cortex, which is related to verbal working memory. The foreign language high school group showed higher brain activity than the science high school group in the left precentral gyrus which is related to the motion of the tongue and lips. These results show that the science high school group utilized the visuo-spatial area, whereas the foreign language high school group utilized the verbal area during the performance of the intelligence task. This suggests that the major thinking process differs depending on the gifted students' primary field of study, although they are doing the same task.

• International Journal of Advanced Culture Technology
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• v.11 no.4
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• pp.263-272
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• 2023

We investigated and analyzed students' perceptions of their choice of science subjects in the high school credit system and the reasons for their choice. To achieve this, the selection of science subjects was investigated for the second year of S high school over the past three years. Students selected an average of 1.54 science subjects, and it was found that the rate of selection of science subjects was gradually increasing by year. Students chose high in the order of life science I, earth science I, chemistry I, physics I, etc. in the science subject group. Students who wish to enter the natural and engineering fields chose life science I, chemistry I, physics I, etc., while, students who wish to enter the humanities society chose society and culture, life science I, ethics and thought, etc. On the other hand, the reason for choosing science subjects was 'related to college admission', followed by 'aptitude and interest', 'career and real life help', etc. physics I, chemistry I, etc., were high in the subjects selected according to the 'related to college admission'. The subjects selected according to 'aptitude and interest' were high in life science I, earth science I, etc. Physics I, chemistry I, etc. are recognized as subjects necessary for college entrance, and life science I, earth science I, etc., are found to be related to their interests and aptitudes.

• Journal of The Korean Association For Science Education
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• v.11 no.2
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• pp.31-48
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• 1991

Lesson plan sheets were collected from letter communication of each local junior and senior high school as well as from literature. These lesson plan sheets were arranged and investigated for items of constituent element and types. The results were summarized as follows. 1. The organization of plans were constituted of three frames as early plan, unit plan, and hour plan. 2. The lecture and inquiry types among the collected lesson plan sheets showed 91.9% and 8.3% in junior high school as well as 87.9% and 3% in senior high school, respectively. The mixed types did not find out in junior high school, however the mixed types showed 9.1%in senior high school. 3. The items of constituent elements in lesson plan sheets were varied by the contents and the kinds of teaching unit in science education of secondary school.

• Journal of The Korean Association For Science Education
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• v.7 no.1
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• pp.89-104
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• 1987

The purpose of this study is specificationaly construct to the instructional objectives of Earth Science I in high school. Specification of instructional objectives will be able to serve as guides for both teaching and evaluation. Some problems were discussed as follows; (1) Establishment of relevant material for instructional objectives (2) Extraction of useful contents for Earth Science I (3) Classification of behavior factor (4) Level of specification (5) Stating method of instructional objectives Based on the above, total 358 objectives (5 chapter objectives, 16 sub-chapter objectives, 47 section objectives, 290 instructional objectives) were constructed for Earth Science I in high school.

• Journal of Environmental Science International
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• v.19 no.3
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• pp.343-351
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• 2010

Since the effect of environmental education at class using textbooks or materials related to environment is limited, the importance of activities for field experience is getting increased day by day. Thereby, the education tends to change into the type of education providing students with direct environmental experience. Students attending the science high school have excellent aptitude and ability for science and will lead the development of science in the future. Now it is urgent to develop various experiential programs which are helpful for them to establish desirable values on environment. However, the field of environmental education that allows science high school students equipped with ample environmental knowledge to improve environment sensitivity and have proper environment awareness is quite restricted as of now. Natural exploration activities are the programs which provide science high school students having lack of chance for environmental education with good opportunities to contact nature and also play significant roles in arousing their interest in issues related with environment. Therefore, it is thought that they will let science high school students explore the natural features of Korea, understand the importance of preserving environment and ecosystem profoundly, and encourage environmental awareness and will of environmental practice. Thereupon, with the study subjects of 121 first and second graders at U Science High School, this article analyzed their recognition of the necessity for environmental education and environmental pollution problems before and after the natural exploration activities, and conducted a survey on their satisfaction after the natural exploration activities and analyzed it. The result of this research is as follows. First, it was shown that the natural exploration activities were effective to raise the science high school students' awareness of issues related with environmental pollution. Second, the natural exploration activities had effect upon enhancing the students' willingness of environmental practice. Third, there was statistically significant correlation between the science high school students' satisfaction with the natural exploration activities and their achievement in the science subject. Fourth, there also was a statistically non or weakness significant correlation between their satisfaction with the natural exploration activities and preference for the science subject. In particular, it was found that students preferring biology indicated higher satisfaction.

• Journal of Engineering Education Research
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• v.15 no.5
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• pp.36-41
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• 2012

Student members from The University of Tokushima worked voluntarily at the science school for elementary school children and high school students under the support of Japan Science and Technology Agency. The teaching classes for the science school were held in 2010 as follows: (1) Science handicraft class for children on "Wonder in light, sound, temperature and force", (2) Family Science School for children and parents on "Measurement of length, temperature, weight and energy", (3) "Tatara steel making" for high school students, (4) "Wave motion in strings" for high school students. This paper describes how the students prepared the teaching materials and what they obtained from the teaching activities.

• Journal of The Korean Association For Science Education
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• v.5 no.1
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• pp.35-47
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• 1985

It is well known that high school girls' mean achievement levels in science tests are lower than high school boys' and that fewer women than men are employed as scientists and engineers pursue scientific careers. Many research attributed the sex difference in achievement level in science and the lack of women in science among others, to the experiential differences in scientific activities and the differences in attitudes toward science and scientists. Therefore, the study had its object to examine the sex difference by high school students in scientific experience and attitudes toward science and scientists. The differences in science experiences were identified at eight schools over rural and urban areas in Kangwon province. Science activities surveyed included use of experimental materials and instruments, observation of scientific phenomena, and extracurricular scientific activities. Attitude scale contained the nature of science, scientific research methods and philosophical views held by scientists. The study found sex differences in scientific experiences and attitudes. i. e.: fewer high school girls than boys had experience with scientific activities, especially with extracurricular activities; however, girls had more positive attitude toward science and more active desire to participate in science. Consequently, the study implies that, in order to narrow the gaps between achievement levels for boys and girls, science education should take consideration of the sex difference in experiences with and attitudes toward science.