• Journal of the Korean Society of Earth Science Education
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• v.8 no.1
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• pp.66-75
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• 2015

This study is to investigate an argumentation level for elementary school students after analysing an argumentation structure about a socio scientific issue(SSI), and inquire a change of the decision-making according to the refutation materials and empathic situation. This data was collected from the semi-structured interview with the 14 students, grade 6th. For this, the first stage is to present the reading materials about the SSI to the students, let them decision-making and make them argue pro and con about the SSI during the interview. After that, facing with the refutation materials against the existing contention and the empathic situation, the change of the decision-making of the students was conducted. After the research, the level of the argumentation of the students was low, and the students who didn't have the background knowledge about the theme made the decisions according to the values, emotions or intuitions of their own. And the decision-making of the students changed more when presented with the refutation materials and the empathic situation, they were difficult to make the decision because of new information and various stances. Besides, they lacked in the ability that recognize the situation related with their own life, just used the fragmentary knowledge associated with value of life respect. Through these result, it is necessary to produce the refutation materials and empathic materials about the SSI to the students for improving the level of argumentation.

• Journal of the Korean Society of Earth Science Education
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• v.5 no.2
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• pp.189-196
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• 2012

This study was conducted using the phenomenological research method to collect and analyze high school students' opinions about fusing "science" textbook that reflect the 2009 Revised Curriculum. Ninety six students were chosen to be participants from 32 high schools that selected by city and province. The data collection was carried by individual interviews and group discussions. The results are as follow; students' opinions were summarized to 50 themes, and then classified to 9 theme clusters and 2 categories. Students' opinions were divided into a positive position - "it is good because interesting material associated with life", "the structure of textbook is good", "teachers' efforts make class interesting", and "it will help in career choices"- and negative position - "the content is difficult to understand", "the configuration is complex", "I have less interest about it because it doesn't related College Scholastic Ability Test", "teacher's explanation is insufficient", and "it is not associated with career choice"-. The living-related material and story-telling configuration received good reviews from students. On the other hand, the configuration of topics makes many concepts to use, so students have difficulty understanding the content and pointed out the lack of teachers' explanations about unfamiliar areas. In order to solve the difficulties, variety teaching material for fusing "science" will be developed.

• Journal of the Daesoon Academy of Sciences
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• v.35
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• pp.181-216
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• 2020

The incarnation of Jesus and Jeungsan's descending to earth as a human being are important theological theories in their respective religions, Christianity and Daesoon Jinrihoe. Both theories are the doctrinal devices necessary for the religious description of each religion. However, this kind of study is likely to result in a theological study that generates religious apologia or explanations. Therefore, it is impossible and meaningless to define the theory of another religion as meta-discourse in terms of one's own religious viewpoint. From a traditional theological point of view, the incarnation is an exceptionalist case wherein God descended as a human being named Jesus to save humanity from original sin. In the case of Jeungsan's descending to earth as a human being, its religious features appear in various forms, so the attempt to unify these two is not an objective method of religious studies. However, this paper aims to find the religious significance of Jesus' incarnation and Jeungsan's descending to earth as a human being by understanding them from a third-person terminology or third-person religious viewpoint rather than from a specific theological position. To this end, this paper will use Kim Jong-seo's position that the concept of Jeungsan's descending to earth as a human being was borrowed from the concept of the incarnation of Jesus as the premise of the research generated in this paper. Therefore, this paper avoids the quest for "Total Christ" or "Total Jeungsan" that integrates and views the divine and human elements of Jesus and Jeungsan. This is because such a research method becomes a theological study. Instead, it excludes transcendental elements or metaphysical aspects that discuss the divine pre-existences of Jesus and Jeungsan and clarifies the significance of the incarnation and Jeungsan's descending to earth as a human being at the physical level in terms which are objective and verifiable. According to this research methodology, this paper develops a discussion after presupposing the hypothetical names of "incarnationist religion" and "divine descent in human avatar religion." However, the two presuppositions mentioned above contain elements of criticism that they are materialistic interpretations that completely eliminate connotations of divinity and religious significance. Nevertheless, it can be said that the two presuppositions have academic significance due to the way in which they avoid the current entanglement of transcendence and instead aim for modernistic relevance.

• The Journal of the Korea Contents Association
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• v.18 no.9
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• pp.498-509
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• 2018

involves philosophical perspectives that are different from other SF movies. This perspective was derived from that of Zecharia Sitchin, in which he tells the history of the earth and mankind from a very unique perspective. He claimed that the intelligent beings (according to Sitchen, we called them the gods) on this planet created mankind and brought them ancient civilizations. The purpose of this study is to analyze under the determination that a comparative analysis can be made between SF movies and an art genre, in the outlook that Sitchin's perspectives are under extraordinary attention of religious and academic circles and are assisting in solving many mysteries on earth with currently excavated archaeological evidences, to identify the factors of consensus between the message Sitchin wanted to convey and SF movies and find the historical perspectives of Sitchin in the cross-section between Sitchin and the narratives in .

• Journal of the Korean earth science society
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• v.25 no.4
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• pp.277-288
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• 2004

In this study, state of sea surface were analyzed comparatively for cases of low atmospheric pressure, which occurred in the middle area of China and moved eastward to the Korean Peninsula across the Yellow sea during April 9-12, 1999, and typhoons 'NEIL' May 1999 and 'OLGA' July 1999, which moved northward along the west coast of the Korean Peninsula. In cases of low pressure, wind speeds and phases were respectively stronger and faster in the center area than in the surrounding areas. The wave heights seem to a somewhat differing tendency from that of the wind speeds due to the influences of geometry. On the other hand, wave heights were lower under typhoon weather than under low pressures, except the instance of wave height over 5 m on Chilbal when typhoon Olga pass northward from the southern area. Storm surges also showed larger amplitudes under low pressures than under typhoons. The results suggest that wave sand storm surges may be larger for a slow passing synoptic low pressures than for a fast passing local typhoon.

• Journal of the Korean Society of Earth Science Education
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• v.6 no.3
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• pp.174-184
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• 2013

The purpose of this study was to investigate the awareness of elementary school teachers on the socio-scientific issues. Fukushima Nuclear Power Plant Accident was used by concrete issue connected with SSI for this study. Participants in this study were twelve elementary school teachers studying at K University Graduate School of Education, located in the central region, who underwent a semi-structured interview. The study method was the phenomenological research method which is one of the qualitative research methods, and the interview papers had been examined by three scientific experts. As a result of the study, it was divided into twenty six themes, eight theme clusters, and two categories, and considered the thoughts on the Fukushima nuclear power plant accident, its influence on Korea, the relationship between science and society as a result of the Fukushima nuclear power plant accident, interested in social issues related to science, application in class, response from students and the influence on students. Teachers had a general understanding of science-related social issues, but did not have much interest in the subject. However, they mentioned that to apply the issues in the curriculum would have a positive influence and encourage scientific motivation in students and, furthermore, helped them to develop the awareness of science in their surroundings. A greater interest in socio-scientific issues need to require from teachers and, through including these issues in the curriculum, we should have positive influence in developing science education.

• Journal of Soil and Groundwater Environment
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• v.18 no.6
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• pp.48-55
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• 2013

This study aimed at characterizing unsaturated zone at the source zone area contaminated by DNAPL and investigating feasibility of soil vapor extraction (SVE). Five boreholes with three multi-level screens at the depth of 3.0~4.5 m, 5.5~7.0 m, and 8.0~12.0 m were installed at the source zone. Pneumatic tests were performed to determine the permeability of porous medium. Permeability was estimated to be 81.6 to 203.7 darcy, depending on the applied solutions, which was contradicted by grain size analysis of cored soil samples leading to 3.51 darcy. This is due to air flow through gravel pack during the early stage of pneumatic test. Pressure-drawdown curve in the late stage also well showed the leaky aquifer type, indicating air leakage to the ground. Air flow tests were also carried out to investigate air flow connectivity between multi-level wells, indicating that the horizontal air flow was well developed between the lower screens of the wells, not between the upper and middle screens due to the leakage to the surface. For the SVE test, there was no noticeable variation in TCE vapor concentration between three different test runs: 1. 8 hours daily for 5 days, 2. 24 hours together with air blowing at another well (BH1), 3. five consecutive days. Even for five-day consecutive test, total amount of removed TCE was estimated only to be as low as 46.5 g.

• Korean Journal of Metals and Materials
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• v.56 no.12
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• pp.870-877
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• 2018

Cyanex 272 shows the highest separation factor for the rare earth elements from hydrochloric acid solution among the organophosporus acidic extractants, D2EHPA and PC 88A. Solvent extraction of Tb(III) from weak hydrochloric acid solution with an initial pH 3 to 6 was compared with Cyanex 272, its mixture with Alamine 336, and ionic liquid with Aliquat 336. The solvent extraction reaction of Tb(III) using Cyanex 272 was the same as that of light rare earth elements. Synergism was observed for the extraction of Tb(III) by the mixture with Alamine 336 when the initial concentration ratio of Cyanex 272 to Alamine 336 was higher than 5. Use of the ionic liquid led to a great increase in the extraction percentage of Tb(III) from the same initial extraction conditions. While the equilibrium pH of the mixture was always lower than the initial pH, under some conditions extraction with the ionic liquid resulted in a higher equilibrium pH than the initial pH. The loading capacity of the mixture and the ionic liquid was the same and 2.6 times larger than that using Cyanex 272 alone. Ionic liquid was recommended as a suitable extractant for the extraction of Tb(III) from hydrochloric acid solution based on the ease of handling and higher extraction percentage.

• Journal of the Korean Geotechnical Society
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• v.27 no.9
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• pp.5-11
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• 2011

This paper recommends the alternative back-fill material for the pre-insulated pipe based on the results of tests performed using different kinds of backfill material. In this study, laboratory tests were preformed to determine the behavior of the pre-insulated pipe caused by variation on grain size distribution, friction characteristics and earth pressure characteristics of different types of backfill material. Two types of natural sand (fine-grained and coarse-grained sand) and crushed sand, and two types of gravel (10mm, 20mm) were used as backfill material in the laboratory tests. The laboratory test results were analyzed and compared with the pre-insulated pipe backfilled with the standard medium-grained sand. Based on the evaluation and comparison of laboratory test results, it was determined that crushed sand is the most suitable back-fill material that can be used as an alternative for medium grained sand for pre-insulated pipes.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.32 no.1C
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• pp.1-6
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• 2012

In this study, field tests were performed to evaluate the stability of pre-insulated pipe during the compaction operation and to recommend an alternative backfill material. Three types of natural sand (fine-grained and medium-grained, coarse-grained sand), crushed sand and two types of gravel (10 mm, 20 mm) were used as backfill material in the field tests. Field tests were performed to determine the behavior (earth-pressure and deformation, installation damage) of the pre-insulated pipe due to variation of different types of backfill material. Based on the evaluation and comparison of field test results, it was determined that crushed sand is the most suitable back-fill material that can be used as an alternative for medium grained sand for pre-insulated pipes with respect to the engineering behavior and material supply.