• Water for future
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• v.56 no.10
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• pp.54-60
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• 2023

• The Journal of Korean Institute of Next Generation Computing
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• v.14 no.6
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• pp.44-56
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• 2018

Researches on military weapons are actively studied to improve national defense power of each country. The military weapon system is being used not only as a weapon but also as a reconnaissance and surveillance device for places where it is difficult for people to access. If such a weapon system becomes an object of attack, military data that is important to national security can be leaked. Furthermore, if a device is taken, it can be used as a terrorist tool to threaten its own country. So, security of military devices is necessarily required. In order to enhance the security of a weapon system such as drone, it is necessary to form a chain of trust(CoT) that gives trustworthiness to the overall process of the system from the power on until application is executed. In this paper, by analyzing the trusted computing-based boot technology, we derive trusted boot technology components and classify them based on hardware dependence/independence. We expect our classification of hardware dependence/independence to be applied to the trusted boot technology of our self-development ultraprecision weapon system to improve the defense capability in our military.

• Journal of The Korean Association For Science Education
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• v.19 no.1
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• pp.41-61
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• 1999

In this study I defined the direction Integrated Science Education(ISE) should take. So that I groped for the direction ISE should take in the inherent nature of science and education, analyzing their respective validity from philosophical and psychological angles. Based upon these researches, I formulated the three directions for ISE to take; knowledge-centered, social problem-centered, and individual interest-centered. The results of this thesis may be summed up as follows: 1. The knowledge-centered ISE that thinks the inherent nature of science is in the scientific knowledge is based upon Hirst's integrated logic which is built on discipline-centered educational viewpoint. Now, the focus of interdisciplinary integration consists in clarifying the meanings of knowledge and the logical relations between one knowledge and another according to the respective form of exploration. The knowledge-centered ISE, therefore, was analyzed to find its justification in the educational philosophy of idealism, realism, neo-scholasticism; in the educational theories of essentialism, behaviorism, perennial ism; in the scientific philosophy of empiricism. positivism; in the educational psychology of developmental psychology and constructivism. 2. The social problem-centered ISE that thinks the inherent nature of science is the process of social concord is based upon Dewey's integrated logic which is built on experience-centered educational viewpoint. Now, the focus of interdisciplinary integration consists in the methodological aspect facilitating the process of experience. The social problem-centered ISE, therefore, was analyzed to find its theoretical justification in the educational philosophy of pragmatism; in the educational theory of progressivism; in the scientific philosophy of relativism and rationalism; and in the educational psychology of developmental psychology and constructivism. 3. The individual interest-centered ISE is based upon Patterson's integrated logic which is built on human-centered educational viewpoint. The focus of education here is self-realization. Therefore, rather than provide in learning conditions from outside, one is made to choose them oneself and the process of satisfying one's motive is emphasized. The individual interest-centered ISE, therefore, was analyzed to find its theoretical justification in the educational philosophy of existentialism; in the educational theory of humanism; in the scientific philosophy of relativism; and in Gestalt psychology.

• Journal of Korea Technology Innovation Society
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• v.13 no.3
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• pp.471-493
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• 2010

The service industry has become very important for almost every country. The same goes for Korea, as its service industry accounts for more than 60 percent of GDP. However, it is true that the competitiveness of Korea's service industry is very low compared to that of major developed countries. It is particularly true for knowledge-intensive service sectors. In this reason, Korea needs to strengthen the competitiveness of domestic service sectors. There have been many studies on service innovation models. 1his paper tries to explore how to enhance the competitiveness of Korean service industry. It argues that the science and technology will play an essential role in strengthening the competitiveness of many service sectors and technology and innovation management will be very important also for them. Therefore, based on the review on existinf models, this paper suggests a "Model of Strategic Services Innovation Management" which is composed of strategic intent, technological innovation, and organizational innovation. Based on this model this paper analyzes two cases: Wal-Mart and Incheon International Airport Co. According to our analyzes, both companies have enhanced their competitiveness significantly based on technological and organizational innovations, which have been initiated at corporate leveL Therefore, the Korean service industry should actively adopt the Strategic Services Innovation Management Model in order to enhance its competitiveness and productivity.

• Journal of Science and Technology Studies
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• v.10 no.1
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• pp.107-152
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• 2010

This paper explores the historical process that created a specific understanding of and responses to atopic dermatitis(AD) in Korea. AD hardly has a status of an environmental disease in other societies but it is a representative environmental disease in South Korea in connection with various environmental pollutants, most notably with endocrine disrupting chemicals. This understanding of AD as an environmental disease led to an unprecedented legislation of the Environmental Health Act of 2008, a broad environmental health law with the precautionary principle and the focus on human aspect of environmental problems. In line with the growing body of works that articulate the roles of the public and culture in regulatory process, this paper argues that both the understanding of and the regulatory responses to AD owe greatly to the knowledge and political practice of the public, especially that of the 'Atopy moms'. Their knowledge practice that creatively appropriated scientific uncertainty regarding AD brought unexpected epistemological and political alliances, respectively with alternative medicine and with organic coop movement and an emergent political party and generated enough dynamics for the legislation of the EHA.

• Journal of The Korean Association For Science Education
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• v.31 no.6
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• pp.931-941
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• 2011

This study aimed to examine the effects of argument-based chemistry laboratory investigations using the Science Writing Heuristic (SWH) approach on students' use and embedding of multimodal representations in summary writing. Participants of this study were thirty-nine freshman students majoring in science education at a National University in Korea. Argument-based chemistry laboratory investigations using the SWH approach were implemented for twenty-three students enrolled in one cohort, and the traditional chemistry laboratory teaching was implemented for 16 students enrolled in the other cohort. Summary writing samples were collected from students before and after the implementation. Summary writing samples produced by students were examined using an analysis framework for examining the use and embeddedness of multimodal representations. Summary writing was categorized into one of verbal mode, symbolic mode, and visual mode. With regard to the embedding of multi-modal representations, summary writing samples were analyzed in terms of 'constructing understanding,' 'integrating multiple modes,' 'providing valid claims and evidence,' and 'representing multiple modes.' Data analysis shows that the students of the SWH group were better at utilizing and embedding multimodal representations in summary writing as they provided evidence supporting their claims. This study provides important implications on pre-service science teacher education.

• Journal of Korean Home Economics Education Association
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• v.29 no.3
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• pp.49-75
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• 2017

The purpose of this study is to provide the justification of the subject through review and alternatives example on the internal consistency of Home Economics curriculum components focused to the clothing & textiles area based on the beliefs and values inherent in the Home Economics curriculum. For this purpose, we examined the perspective of the assumptions about the five components of the curriculum - family, society, objective, subject matter, method in education - from the revised curriculum in 2007 to in 2015, and suggests an example of subject matter based on the result. The results of this study are summarized as follows. First, the clothing & textiles area of the revised curriculum from in 2007 to in 2015, family, society, objective, subject matter and method in education, excluding subject matter, were taken from a critical science perspective. In order for Home Economics curriculum components to be internally consistent, assumptions about the subject matter should be transformed to deal with the clothing & textiles as a family work. And needed to complement assumptions about family, objective and method in education. Second, based on the discussion, suggested an alternative example to the clothing & textiles area based on the internal consistency of Home Economics curriculum components.

• Journal of the korean academy of Pediatric Dentistry
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• v.49 no.4
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• pp.392-401
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• 2022

This study investigated the effects of silver diamine fluoride (SDF) and potassium iodide (KI) treatments on the acid resistance of dentin exposed to secondary caries. Sixteen bovine dentin specimens with artificially induced caries were assigned to the following four groups: untreated negative control, untreated positive control, SDF-treated (SDF), and SDF and KI-treated (SDFKI). Multispecies cariogenic biofilms containing Streptococcus mutans, Lactobacillus casei, and Candida albicans were cultured on the specimens for 28 days, except for the negative control group. Specimens from the negative control group were stored in phosphate-buffered saline for that period. After a cariogenic biofilm challenge, the degree of demineralization was evaluated using micro-computed tomography (micro-CT). As a result of data analysis using micro-CT, the demineralization depths of the negative control, positive control, SDF, and SDFKI groups were 149.0 ± 7 ㎛, 392.0 ± 11 ㎛, 206.0 ± 20 ㎛, and 230.0 ± 31 ㎛, respectively. The degree of demineralization was significantly reduced in the SDF and SDFKI groups compared with that in the untreated positive control group. There were no significant differences between the SDF and SDFKI groups. This study confirmed that SDF and SDFKI treatments increase the acid resistance of dentin to secondary caries. KI did not significantly affect the caries-arresting effect of the SDF.

• Journal of Marine Life Science
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• v.8 no.1
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• pp.87-92
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• 2023

Microplastic particles are ubiquitous in the environment and not standardized particles of size, shape, or type. Therefore, it is very limited to establish a risk assessment framework that accurately evaluated and manage the multi-dimension of marine environment including seawater and sediment based on toxic data. In the study, we review the characteristics and effects of marine environmental microplastic and suggest risk assessment framework (draft) based on the distribution and impact of marine environmental microplastics. Although, the characteristics of environmental microplastic are very widely but the most abundant toxic data are concentrated on unique shape and type, and there are also large gaps of test organism between laboratory-exposed organisms and resident species. Great limitations with respect to toxicity data quality also exist for traditional effect assessment methods, which in reliability of the resulting risk characterizations. However, considering the fact that the international community's movement on microplastics management is gradually strengthening and the pollution level of microplastics in marine environment is increasing, further research on environmental relevant risk assessment technique should be proposed based on the characteristics of microplastics in the marine environment.

• Journal of The Korean Association For Science Education
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• v.20 no.1
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• pp.166-173
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• 2000

Purpose of this study is to investigate on the attitude toward science of science gifted and talented(G/T) middle school students. The inventory instrument used for study was a revision of TOSRA which consisted of six domains. Subjects were 131 students who had entered into Center for Science G/T Education, Seoul National University in 1999. This center is composed of five divisions: mathematics, physics, chemistry, biology, and earth science. There was no difference between genders totally, but the attitude level of male was higher than that of female in 'career interest in science' domain. Compared among domains, while the attitude score toward leisure interest in science' was the highest, 'normality of scientist' was the lowest. Whereas the attitude level was no difference among divisions except chemistry, that of chemistry division was higher than mathematics in 'adoption of scientific attitudes' domain. Thus, it is needed to provide social and national encouragement for superior science G/T students as well as to develope special programs for them so as to achieve their dreams and to contribute to scientific development of nations.