• Journal of The Korean Association For Science Education
• /
• v.42 no.5
• /
• pp.525-542
• /
• 2022

The purpose of this study is to comparatively analyze the internal and external frameworks of elementary science textbooks, which first appeared as the authorization system of elementary science textbooks changed from the national government system. In order to confirm the purpose of the authorization system to support the development of diverse and creative textbooks, this study compared 7 authorized textbooks with the national textbook developed as the 'Use of Magnets' unit of the 2015 revised science curriculum. In this study, the textbook's framework was largely divided into an external framework and an internal framework for the 'Use of Magnets' unit of elementary science textbooks, and quantitative and qualitative analyses were conducted in parallel according to each subcategory. According to the research results, in the external framework of textbook units, all textbooks had the same structure: unit introduction, scientific inquiry, creative convergence, unit arrangement, and scientific reading materials. The framework in the 'Use of Magnets' unit of the 7 types of authorized textbooks was found to have some differences according to the textbook development team's interpretation of the curriculum achievement standards and many commonalities that maintained the framework in the national textbooks. In addition, the characteristics of each textbook were clearly revealed in some areas not specified in curriculum such as unit introduction activities and science reading materials, a meaningful change was also found in that the level of inquiry activity was classified and operated in response to the uniform inquiry activity operation of the existing government textbooks.

• Journal of Korea Water Resources Association
• /
• v.55 no.8
• /
• pp.635-643
• /
• 2022

Attempts are being made to use the sand dam as an alternative water resource securement facility by installing and operating sand dams in valleys, where water intake capacity is extremely limited, in areas with limited water supply in the upstream watershed of Korea. In the case of some countries in Africa, where sand dams are known to be most actively installed and used, it is difficult to find examples of establishing and applying a separate legal system for sand dams. A sand dam is a kind of groundwater dam, and in view of its concept, structural and technical form and characteristics, purpose, use, and function, it will be said that it has the legal character and status as a facility for securing groundwater resources specified in the current 「Ground Water Act」. Interpretation and application of regulations on facilities for securing groundwater resources also supports this. Therefore, it is legal and realistic to promote and implement the sand dam project as one of the installation and management projects for securing underground water resources based on the 「Ground Water Act」.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.26 no.3
• /
• pp.65-84
• /
• 2023

In order to establish a balanced development plan at the local government level, it is necessary to understand the current urban spatial structure. In particular, since the central area is a key element of balanced development, it is necessary to accurately identify its location and size. Therefore, the purpose of this study was to identify the central area system for Busan and to derive underprivileged areas that were alienated from the service areas where the functions of the central area could be used. To identify the central area system, four indicators(De facto Population, Land Price, Commercial Buildings, Credit Card Consumption) were used to calculate the central area index, and Getis-Ord Gi* and DBSCAN analysis were performed. Next, the hierarchy of the central areas were classified and the service areas were derived through network analysis by using it. As a result of the analysis, a total of 12 central areas were found in Seomyeon, Jungang, Yeonsan, Jangsan, Haeundae, Deokcheon, Dongnae, Daeyeon, Sasang, Pusan National University, Busan Station, and Sajik. Most of the underprivileged areas affected by the central area appeared in the Eastern area of Busan and the Western area of Busan, and were derived from old industrial areas, residential areas, and some new cities. Based on the results of the study, we can find three meanings. First, we have made a new attempt to apply a machine learning methodology that has not been covered in previous studies. Second, our data show the difference between the actual data and the existing planned central areas. Third, we not only found the location of the central areas, but also identified the underprivileged areas.

• Journal of Science Education
• /
• v.47 no.2
• /
• pp.117-126
• /
• 2023

In an elementary school science teacher's guide, the guide in details that can help elementary school teachers with difficulties when preparing and conducting science classes are essential. To gain insights into the development of the 2022 revised curriculum elementary school science teacher's guide, it is necessary to investigate the perceptions and needs of elementary school teacher's guide in details. In this study, we developed a questionnaire by analyzing the components and design of an elementary school science teacher's guide in details to explore elementary school teachers' perceptions and needs. For this purpose, we first investigated elementary school teachers' perceptions of their needs, satisfaction, and the utilization of each component of the current guide in details. Next, we investigated teachers' needs regarding the specific components and design of a guide. The findings were as follows. First, elementary school teachers were delighted with the components that help them prepare and conduct lessons. Second, elementary school teachers wanted an easy-to-read design with a layout that allowed them to see the components they needed for their lessons at a glance. In conclusion, the elementary school science teacher's guide in details to be readable and organized to provide at-a-glance information on lesson preparation, lesson flow, and teaching and learning materials needed for science teaching-learning. Based on the results of this study, new approaches and attempts should be made to develop a textbook that elementary school teachers can utilize in the future.

• Journal of International Area Studies (JIAS)
• /
• v.14 no.3
• /
• pp.421-440
• /
• 2010

This paper examines middle powers' ODA policy in the post cold war era and discusses its implication for Korean aid strategy. Middle powers' ODA has been more successful than that of super powers in promoting donors' positive images and in stimulating recipient countries' development. Middle powers tend to pursue multilateral solutions to international problems often by taking a mediator role, and their ODA policies set them apart from the great players in international politics. Middle powers' ODA is primarily aimed at reducing poverty and protecting human rights in least developed countries where humanitarian aid needs the most rather than promoting donors' interests. Also, middle powers have provided bilateral untied aid in the sectors of food aid and emergency relief and steadily devoted about 0.7% of their gross national income to ODA. Meanwhile, Korea as an emerging middle power and a new donor has been implementing its own aid strategy under the name of the Korean development model since the post cold war period. The Korean ODA was not successful in building donors' positive images by simply following the short term strategies of US and Japan. Yet, its ODA policy has been quite effective in sustaining local development by creating specific niches in which the country can specialize in. In specific, Korea has focused on developing the sectors of information and communication technology and industry energy in recipients' countries by maximizing its comparative advantage.

• Journal of Practical Agriculture & Fisheries Research
• /
• v.10 no.1
• /
• pp.67-75
• /
• 2008

Tartary buckwheat is one of specialized plants in Pyeongchang county, Korea and contains rutin much more than common buckwheat. Rutin is a kind of flavonoid (polyphenol compound) that has effects on blood vascular disease, strengthen capillary, and anti-inflammatory effect. This study was conducted to determine the possibility of development of beverage extracted from sugar-treated plants and sprouts of tartary buckwheat. By using two types of undiluted solution extracted from plant and sprouts of tartary buckwheat, we analyzed their nutrition components and did experiment on mice to find out pharmaceutical effects. In an experiment on mice, we administered various concentration of buckwheat to induced diabetic mellitus mice for 1 weeks. As a result, the buckwheat effected finely on lowering blood sugar and decreased LDL-cholesterol and total lipid level but increased HDL-cholesterol level.

• Journal of Cadastre & Land InformatiX
• /
• v.52 no.2
• /
• pp.189-210
• /
• 2022

Cities around the world have paid attention to public transportation as an alternative to reducing traffic congestion caused by automobile usage, excessive energy consumption, and environmental pollution. This study measures accessibility to subway stations in Seoul using a supply-demand-based accessibility technique. Then, the impacts were analyzed through land prices by use and segment. As a result of analysis using the multilevel hedonic price models, accessibility considering both supply and demand for the subway had a positive effect on both residential and non-residential land prices. The effect was stronger for residential than for non-residential. Further, among the accessibility measured by the three functions, the accessibility by the Exponential function was most suitable for the residential land price, and the accessibility measured by the Power function for the non-residential land price had the highest explanatory power. Also, looking at the impacts by land price segments, it was found that higher access to metro stations had the greatest positive impacts on the most expensive segment of residential and non-residential land prices. The results of this study can be applied not only to identify the impacts of public investment on neighborhoods, but also to support real estate valuation.

• The Journal of the Acoustical Society of Korea
• /
• v.41 no.6
• /
• pp.621-628
• /
• 2022

The most realistic way to reduce noise outside the building, such as road traffic noise and aircraft noise, is to strengthen the sound insulation performance at the sound collecting points such as balconies, windows, and exterior walls of each building. However, in light of the reality that shading devices outside buildings are not yet widely used, there are not many studies on sound insulation performance improvement using external windows and window devices such as louvers and blinds. In particular, external blinds can not only block the inflow of strong sunlight in the morning and evening from the outside of the building, but also target the sound insulation effect that blocks the peak noise that occurs during commuting hours. In this study, a study was conducted to improve sound insulation performance against external noise by using an external electric blind (EEB), which is one of the most efficient window and door external shading devices. Various sound insulation performance tests were conducted while changing the configuration of external electric blinds developed for light blocking purposes. Through this, it was verified that an additional sound insulation performance of 6 dB can be obtained by installing an external electric blind compared to the reduction performance of general windows.

• Journal of the Korean Society of Floral Art and Design
• /
• no.40
• /
• pp.3-24
• /
• 2019

This study aim to suggest connective potential of eco-therapy in interior therapy for integrative psychotherapy. The study method was literature review on qualitative study. The study scope was ranged as the following three steps: 1) Literature review on integrative psychological therapy; 2) Discussion on therapy and ecology in interior design; and 3) Association between three aspects of integrative psychotherapy(emotion, cognition and behavior) and psychological phases of interviewee (quasi-consideration, consideration, preparation, behavior, and maintenance). The study results are summarized below: 1) Emotional aspect of integrative psychotherapy utilizes installing and sensory aspects of space. 2) Cognitive aspect of integrative psychotherapy utilizes energetic and installing aspects of space. 3) Behavioral aspect of integrative psychotherapy utilizes structural, installing, emotional, and purposive aspects of space. This study has its significance in extending collaborative concept of plants as the decoration to broad sense of eco-therapy available as the psychological factor in organic relationship between human and environment, which will be used as the resource for design therapy training program in the future.

• Korean Journal of Heritage: History & Science
• /
• v.56 no.2
• /
• pp.62-78
• /
• 2023

The act of burning incense originated from Buddhist rituals and customs, and gradually formed its own culture. In the Goryeo Dynasty, in addition to religious and national rituals, incense came to be enjoyed more generally and widely. In particular, Goryeo literati enjoyed the elegant lifestyle of staying home and burning incense. This was part of a regional culture shared across East Asia. Such incense burning applied the same methods as were used during the same period in China. In collections of writings from the Goryeo Dynasty, it can be seen that incense methods such as gyeok-hwa-hoon-hyang (隔火熏香) and jeon-hyang (篆香) were used. A particular method of incense influenced the size and shape of the incense burner utilized. Small incense burners suitable for simple everyday incense were used, such as the hyangwan (香垸), a cup (wine glass)-shaped burner. White porcelain incense burners from Song were discovered in Gaegyeong, and celadon incense burners from Goryeo were made in the same shape. This phenomenon shows that there was great demand for ceramic incense burners in Goryeo in the 12th and 13th centuries. During this period, incense burners that imitated metalware were produced, and some applied the techniques and patterns of Goryeo celadon. The Goryeo Dynasty-era incense burner was basically a necessity for use in various rituals, but gradually came to be widely used also by individuals.