• Biomedical Science Letters
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• v.18 no.3
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• pp.268-275
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• 2012

Reference ranges of standard experimental parameters are useful for comparisons in toxicology. The aim of this study was to collect data from 4-week repeated toxicity studies in Crl:CD (SD) rats, a strain widely used for toxicity and efficacy research, for establishing domestic reference values. Data on body weight, food consumption; urinalysis, hematological, and blood biochemical parameters; and organ weights were collected from 16 toxicity studies in 220 Crl:CD (SD) rats (110 males and 110 females). The studies had been performed at a single testing facility over the last 3 years and involved animals sourced from a single breeder. The findings were collated as means, standard deviations, percentages, and ranges. Urine volume, uterus weight, eosinophil, and basophil counts, and triglyceride, total bilirubin, and gammaglutamyl transpeptidase levels showed standard deviations of 30% or more. These historical control data would help to interpret the effects of test substances in routine toxicity and efficacy studies.

• Journal of Science and Technology Studies
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• v.2 no.2 s.4
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• pp.55-89
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• 2002

The purpose of this article is to examine and assess the main issues in social constructivism with reference to the history of technology. Social constructivism, as an alternative explanation to technological change, has developed its points actively responding to various criticisms. Historians of technology have joined in dialogues with social constructivists through controversies about narrative vs theory, reliability vs performance, and evolution of bicycle. Social constructivists tend to use new jargons excessively, don't deal historical materials rigorously, and don't consider content-dependency sufficiently. To apply social constructivism to Korean cases many problems should be identified including the deficiency of historical materials, the importance of technological learning, and the peculiarity of relevant social group.

• The Pure and Applied Mathematics
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• v.19 no.1
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• pp.7-21
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• 2012

The fuzzy time series is introduced by Song and Chissom([8]) to construct a pattern for time series with vague or linguistic value. Many methods using the interval and fuzzy logical relationship related with historical data have been suggested to enhance the forecasting accuracy. But they do not fully reflect the fluctuation of historical data. Therefore, we propose the interval rearranged method to reflect the fluctuation of historical data and to improve the forecasting accuracy of fuzzy time series. Using the well-known enrollment, the proposed method is discussed and the forecasting accuracy is evaluated. Empirical studies show that the proposed method in forecasting accuracy is superior to existing methods and it fully reflects the fluctuation of historical data.

• Journal of The Korean Association For Science Education
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• v.5 no.2
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• pp.139-145
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• 1985

This study was undertaken to analyze the research trends on science education in Korea. In this study the analysis for of trends of researches on science education, nine areas such as historical change of science Education, Processes of science learning science curriculum, science instruction, teaching-learning materials and equipment for science education, valuation on science education, survey on Korean science education, policy and management of science education, and natural science, were chosen for the analysir. All science education. thesis and dissertations in Korea, papers of science education published by the science center of the Seoul National University and the papers of the Journal of the Korean Association of Res Search in science Education were analyzed. The findings of this study are as follows: 1. Seventy percentile of science educational thesis and dissertations are on natural science areas. 2. About 14% of all papers being sampled is in science curriculum research category. There are few research studies on historical changes of science education, and teaching-learning materials and equipments for science education.

• Journal of Science and Technology Studies
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• v.12 no.2
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• pp.33-79
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• 2012

This paper first aims to reveal that, in the current trend of 'the participatory turn' in STS, there are divergent positions subtly different from each other, and that the understanding of these divergent positions can be significant to study the differences, similarities and interfaces between the various models of scientific governance discussed in STS and those in risk governance developed by risk studies. Secondly, this paper shows that theoretical differences among STS scholars on scientific governance and public participation goes back to the 1970s and 1980s, during which they first laid down the conceptual basis of STS. All ideas and theories have their own historicity. This article is about the 'historical epistemology' of the participatory turn of STS, and is to seek 'political epistemology' that can become a shared vision of STS.

• The Korean Journal of Archival Studies
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• no.9
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• pp.74-109
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• 2004

In the latter half of the 1980's, Systematical Western Archival Science theory was introduced in Japan especially, provenance principle which is fundamental theory in arrangement, original order principle and understanding in level of archives groups. However, they just confirmed public records arrangement theory having done in each Prefectural Archives(文書館) in Japan since 1960's and embodied it. Among them, National Archives of Japan(國立公文書館) just followed arrangement method each ministry and office did. And Saitama Prefectural Archives(琦玉縣立文書館) grasped changes of the name of department, class, standard by class and organization and its affairs before public records arrangement. On the one hand, Japan Center for Asian Historical Records(JACAR: アジア歷史資料セン夕-) is attending on public records by web which National Archives of Japan. The Diplomatic Record Office of the Ministry of Foreign Affairs(外務省外交史料館). The National Institute for Defense Studies(NIDS : 防衛廳防衛硏究所) have. JACAR arranged the public records based on provenance principle following arrangement system they have.

• Proceedings of the Korea Society of Design Studies Conference
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• 2004.10a
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• pp.238-239
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• 2004

• Proceedings of the Korea Society of Design Studies Conference
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• 1998.04a
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• pp.34-35
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• 1998

• Earthquakes and Structures
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• v.16 no.4
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• pp.501-512
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• 2019

In this study, seismic vulnerability assessment and seismic isolation retrofit of Bayburt Yakutiye Mosque is investigated. Bayburt Yakutiye Mosque was built in the early 19th century at about 30-meter distance to Coruh river in the center of Bayburt in Turkey. The walls of historical masonry structure were built with regional white and yellow stones and the domes of the mosque was built with masonry bricks. This study is completed in four basic phases. In first phase, experimental determination of the regional white stone used in the historical structure are investigated to determine mechanical properties as modulus of elasticity, poison ratio and compression strengths etc. The required information of the other materials such as masonry brick and the regional yellow stone are obtained from literature studies. In the second phase, three dimensional finite element model (FEM) of the historical masonry structure is prepared with 4738 shell elements and 24789 solid elements in SAP2000 software. In third phase, the vulnerability assessment of the historical mosque is researched under seismic loading such as Erzincan (13 March 1992), Kocaeli (17 August 1999) and Van (23 November 2011) earthquakes. In this phase, the locations where damage can occur are determined. In the final phase, rubber base isolators for seismic isolation retrofit is used in the macro model of historical masonry mosque to prevent the damage risk. The results of all analyses are comparatively evaluated in details and presented in tables and graphs. The results show that the application of rubber base isolators can prevent to occur the destructive effect of earthquakes.

• Journal of Science and Technology Studies
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• v.2 no.1 s.3
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• pp.63-83
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• 2002

This article examines the historical and general characteristics of science and technology policy in Korea. Historical characteristics are analyzed through formation period, growth period, and transition period. Korea institutional sis for the promotion of science and technology was made from the initial stage of industrialization. As national R&D programs were launched, technological activities in the private sector were rapidly increased from the 1980s. Korea pursued new directions of science and technology policy with the formation of related laws and Plans from the late 1990s. General characteristics are analyzed by the concept of 'policy regime'. The prime policy goal of science and technology policy in Korea has been related to industrial development so far. In the policy means, input element has been increased focusing on the external aspects. Bureaucratic policy culture has dominated other cultures including economic culture, academic culture, and civic culture.