• Toxicological Research
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• v.29 no.3
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• pp.211-215
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• 2013

The trace toxic metal copper was assayed using mercury immobilized on a carbon nanotube electrode (MCW), with a graphite counter and a reference electrode. In this study, a macro-scale convection motor was interfaced with a MCW three-electrode system, in which a handmade MCW was optimized using cyclic- and square-wave stripping voltammetry. An analytical electrolyte for tap water was used instead of an expensive acid or base ionic solution. Under these conditions, optimum parameters were 0.09 V amplitude, 40 Hz frequency, 0.01 V incremental potential, and a 60-s accumulation time. A diagnostic working curve was obtained from 50.0 to 350 ${\mu}g/L$. At a constant Cu(II) concentration of 10.0 ${\mu}g/L$, the statistical relative standard deviation was 1.78% (RSD, n = 15), the analytical accumulation time was only 60 s, and the analytical detection limit approached 4.6 ${\mu}g/L$ (signal/noise = 3). The results were applied to non-treated drinking water. The content of the analyzed copper using 9.0 and 4.0 ${\mu}g/L$ standards were 8.68 ${\mu}g/L$ and 3.96 ${\mu}g/L$; statistical values $R^2$ = 0.9987 and $R^2$ = 0.9534, respectively. This method is applicable to biological diagnostics or food surveys.

• Journal of the Korean Society for Library and Information Science
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• v.15
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• pp.73-94
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• 1988

The main purpose of the present study is to investigate the citation habit of Korean social scientists by making use of citation analysis and content analysis, and to assess the nature of interdisciplinary flow of information in Korea in terms of the citation dependency on other disciplines, the types of channels used in formal scientific communication, the countries published the literatures of other disciplines cited in the source articles, and the languages used in the literatures of other disciplines. The major findings and conclusions reached at this study are summarised as follows: 1. Korean social scientists mainly cite the literatures of economics, sociology, politics, and history when they cite the literature of other disciplines. 2. The citation dependency on other disciplines of the economists, polictial scientists, and sociologists are 6 percents, 14 percents, and 19 percents, respectively. 3. The citation dependency on history of the economists is 25 percents, the dependency on sociology of the political scientists is 34.9 percents, and the dependency on economics of the sociologists is 50. 19 percents. 4. The types of channels used in formal scientific communication in social sciences are firmly book and journal. 5. The countries published the literatures of other disciplines .cited in the source articles are Korea and the U. S. firmly. 6. The languages used in the literatures of other disciplines cited in the source articles are Korean and English overwhelmingly.

• Journal of Korean Elementary Science Education
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• v.21 no.1
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• pp.25-41
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• 2002

The Korean National curriculum is divided into the curriculum, discretion, and extra curriculum activity. Extra curriculum among them consists of fie grounds, that is, a self-governing, adjusting, developing, service and exercise activity. The content of developing activity among them includes academic literary arts, in that the developing activity related to science. The developing activity connected with science can be a good chance which students can have deepened learning besides a regular course. In addition, effective management in science class can play an important role to cultivate scientific sense and to raise scientific talent. The study finds out how the management connected with science-related extra-curricula activity in science is actually going on. The study carries out a questionnaire with 40 teachers and interviews 5 teachers as well who are in charge of science-related extra-curricula activity connected with science. As a result, on the side of students, ① systematic introduction course in science is not given to them, ② the course is operating without considering students interests and levels, so it causes the problems of developing their potential ability and extension. On the side of teachers, ① they organize the science department based on school's situation and policy. ② they disregard teachers' roles and interests. ③ the science department's program is operating improvisedly rather than systematically, ④ the evaluation is done formally is found out. I have come to know that to manage a desirable science-related extra-curricula activity connected with science needs to have sufficient, detailed materials and experts from outside.

• Journal of Korean Library and Information Science Society
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• v.45 no.4
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• pp.429-455
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• 2014

The information of figures in science which could induce interest in science and have educational importance is the value-added content through information sharing and connectivity. In this study, we analyzed domestic and overseas cases of Linked Open Data(LOD) that are being increased recently in order to provide a better service through information sharing and utilization of scientific figures. We suggested an efficient scientific figures ontology and the method for LOD construction reflecting the results of the analysis. We also presented plans for the interlinking among various external resources and for promoting LOD information use.

• Journal of Environmental Science International
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• v.25 no.4
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• pp.543-556
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• 2016

Sangju, a city in the North Gyeongsang Province, is well known as "Three Whites", representing its three main agricultural products: rice, silkworm, and dried persimmons. Therefore, development of a variety of dishes or products that can promote the consumption of dried persimmons is an urgent requirement for this region. This study was designed to provide fundamental information for revitalizing community-based specialized agriculture through scientific inquiry into medicinal foods and to develop a medicinal food menu based on the results of previous research and pre-survey. The pre-survey results and incompatibility revealed that palatability influenced people's decision to consume dried persimmons far more than pharmacological functionality. Therefore, palatability played an important part in the development of dried persimmon puddings with acceptable texture. These dishes are in high demand as they suit the tastes of variety of consumers. The inclusion of various additives lowered the sugar content in the developed foods and made the products alkalescent (pH > 7), thereby improving functionality. Unique color and flavor additives were also important criteria that determined the selection attributes of the developed medicinal foods. In addition, the additives had a positive effect on the fragrance and texture of the foods. In conclusion, the results suggested that use of additives provides significant advantages in promoting the consumption of Sangju-dried persimmons by improving both functionality and palatability.

• Journal of Korean Academy of Nursing
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• v.15 no.3
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• pp.50-61
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• 1985

For nursing as a science to establish a unique system of knowledge, nursing researches should include philosophical activities such as critique, analysis and synthesis. As a consequence of these activities, nursing science comes to add up more abundant content of knowledge and have a more refined scientific system. In short, nursing science can be developed in respects of tools and methods through philosophical researches, i.e., philosophy of nursing science. Traditionally, the task of supplying individual science with pertaining methodological principles has been due to philosophy, or philosophy of each Scientic discipline. Philosophy of nursing science establishes a demarcation between nursing and non-or pseudo-nursing, so that the unique natue of nursing can be revealed. Systematizing the particular knowledges or informations discovered through empirical reseal ches, philosophy of nursing science, as a part of rational activities to construct its scientific theories. Owing to philosophy of nursing science, conceptual frameworks or theories settled in various branches of nursing science can be integrated into a holistic system. Philosophy of nursing science can include arguments on standards, values, goals and intents of nursing behavior, so that their interrelational networks can be understood. Philosophical discussions can offer nursing science positive ways to more extensive development, preventing it from indulging in particular or exclusive inclination. And Philosophy of nursing science in itself should also keep a liberal attitude to overcome preconceptions concerning methodology of nursing science.

• Journal of The Korean Association For Science Education
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• v.15 no.4
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• pp.472-486
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• 1995

The purpose of this study was to classify the types of scientific concepts by theoretical concepts and empirical concepts in physics, and to create cognitive conflict in students with logical statements and demonstrations, and to investigate conceptual changes. It seems that mechanics has much to do with the empirical concepts, and electromagnetics has much to do with the theoretical concepts. The condition of the instrument is intellegible, plausible, fruitful, and able to state and demonstrate. The instrument appropriate for these conditions was developed, which consisted of 6 items in mechanics and 6 items in electromagnetics, and conceptual changes were investigated. Structured interviews were conducted with 32 high school students to create cognitive conflict. We have elicited their ideas three times : pretest, posttest and delayed posttest. As the results of this study, demonstration method was more effective for conceptual change than logical argument method. In case of content areas, the misconceptions on mechanics concepts were changed more easily than those on electromagnetics concepts. In addition, the results of the study showed that the more cognitive conflict, the more the conceptual change was occurred.

• Journal of The Korean Association For Science Education
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• v.23 no.5
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• pp.494-504
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• 2003

The primary purpose of the study was to determine the appropriateness of the inquiry processes described in Science VII's written based on the 7th National Science Curriculum. It was found that the basic processes were well reflected on the textbooks analyzed for the research. However, only a few integrated processes and the inquiry activities could be seen on the same textbooks. Furthermore, a larger majority of the inquiry processes and activities were not agreed with what the tasks and titles say. Especially, the none of as many as 71 experiments were not coincided with their titles' intentions. Also suggested in the paper were the implications of the results for the science education in the Korean middle schools.

• Journal of Korean Elementary Science Education
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• v.23 no.1
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• pp.74-84
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• 2004

The purpose of this study was to get an implication on teacher education program, by exploring the difficulties pre-service elementary teachers have with their science lessons. 37 pre-service teachers were requested to write an anecdote about their science lessons during their 4 week practicum. By analyzing these anecdotes, the difficulties were grouped into several categories by the researcher, and then reconfirmed by the pre-service teachers themselves. The result showed that there were far more difficulties with practical work (cases: 48), than with content knowledge teaching (cases: 17). Among practical work related difficulties, the most frequent cases were: 1) when they have unexpected result different from scientific theory (cases: 10), 2) when they teach process skill and usage of lab equipments (cases: 8), and 3) when they do not have enough preparation for practical work (cases: 7). Unlike the result of preceding research on secondary pre-service teachers, there was no affective aspect problems. These difficulties also can be divided into 'problems' and 'dilemmas'. Whereas 'problems' can be settled by removing obstacles, 'dilemmas', a conflict-filled situation, require choices between competing values or aims. The use of scientific language, the decision on the level and amount of knowledge they teach, and disposal of unexpected experiment results caused such dilemmas in science lessons. The research results imply practical work should be more strengthened in the elementary teacher education program. And both teacher educators and pre-service teachers need to understand that practical teaching is a complex enterprise accompanying some 'dilemmas'. The role of science teachers as managers of dilemmas could be considered.

• The Bulletin of The Korean Astronomical Society
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• v.37 no.2
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• pp.96.1-96.1
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• 2012

Science we have perceived as genuine science is based on western scientific enterprise, that is, western modern science(WMS). The K-12 science curriculum in Korea absolutely contains WMS content. Elkana(1981) criticized the indifference of comparative science in the field of science, whereas there have been a lot of comparative studies of art, religion, ethics, and politics. Science is the product not only based on 'western' culture but all cultural around the world including Korea. People have consistently observed and tested for such a long period of time all over the world. Traditional science of Korea can be related to multiculturalism, which has become important in many fields. Korea has a lot of great scientific enterprises, such as astronomical instruments of Chosun Dynasty and ancient data of natural phenomenon in Samguk-saki or Samguk-Yusa. It is expected that students will consider them as more 'objective' and 'realistic' things rather than 'artistic' and 'distinguished' things. Astronomy was also very important in the East because they believed sky as king, which results in the development of a lot of astronomical data and instruments in Korean history. In this study, we developed three units of science programs using astronomical enterprises in Korea: 1) Activities with our sundial, Angbuilgu:, 2) data interpretation of natural phenomenon in ancient Korea, 3) experience in Gyeongbokgung Palace. From these programs, we expect that students will develop a profound understanding and take pride in our science.