• Journal of the Korean earth science society
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• v.30 no.7
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• pp.869-882
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• 2009

The purpose of this study is to develop teaching materials for geological fieldwork around the area of Mai Mountain and to analyze the responses of elementary teachers as to the application of fieldwork. The site of geological fieldwork, Mai Mountain area, is located around the Maisan Provincial Park of Jinan-gun, Jeonbuk Province where a large-scale sedimentary succession in the era of Cretaceous is shown. It provides an easy access to distinct outcrops around the provincial park. The sequences reveal different kinds of sedimentary rocks and various sedimentary structures, and provide information of the lacustrine sedimentary environments of the Cretaceous. In addition, metamorphic rocks and structures formed at the margin of the basement and the basinal fault as well as a sedimentary sequence of the Quaternary formed in a modern fluvial stream are observable. A 4-step fieldwork procedure was applied to a group of 13 elementary teachers. Through questionnaire and interview, results showed that (a) the geological fieldwork and materials were effective to positively increase science teaching from the participating teachers, and that (b) there is a great need of the development of various fieldwork sites and teaching materials that promote active fieldwork for students to have their lived experience and knowledge gain. It is suggested that teacher education programs be able to provide active fieldwork for elementary inservice teachers to properly carry out a geological fieldwork for their students.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.29 no.2
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• pp.25-35
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• 1997

오늘날 열대림 면적의 급격한 감소, 지구온난화등 지구환경 보전의 관점에서 이들 목재이외의 자원의 활용 및 양마와 같은 새로운 비목재자원 개발의 중요성이 재인식되기에 이르렀으며, 이 가운데서 양마는 생장이 라르고 수확량이 크며, 목질부의 단섬유는 물론 긴 섬유장을 가진 인피부섬유로 구성되어 있고, 실리카함량도 매우 적어, 특히 산림자원이 부족한 개발도상국에서 펄프.제지용 자원으로서 주목되고 있다. 양마가펄프.제지용자원으로서 오늘날과 같은 세계적 주목을 받게 된 것은 미국 농무성 북부지역연구센타 에서 이루어진 “새로운 섬유작물”에 관한 기초연구에서 양마가 제지용 섬유작물로서 높이 평가되고 있다. 양마의 경우 인피부는 비교적 리그닌함량이 적고, 목질부는 활엽수재에 가까운 리그닌을 함유하고 있는데다, 섬유형태에 있어서도 인피부와 목질부간에 큰 차이가 발견된다. 본 연구에서는 양마를 중성아황산법으로 전처리하여 제조한 반화학펄프로 부터 제조한 종이의 광학적 성질을 검토하였다 펄프의 광학적 성질은 원료의 화학적 조성,섬유의 형태, 부위.화학적 처리정도, 원료의 저장기간 및 충전제의 첨가에 따라 크게 영향을 받았다. 장섬유와 낮은 리그닌함량을 가진 전간부 펄프시트는 불투명도가 낮았으며, 목질부 펄프로부터 상대적으로 밀도가 다소 높고, 불투명도도 높은 종이를 만들 수 있었다. 펄프원료의 저장기간이 백색도를 낮추었으며, 불투명도에는 그다지 영향하지 않았다. 약품전처리 및 표백이 백색도 및 불투명도에 크게 영향하였고, 특히 충전제 첨가로 광산란을 증가시켜 불투명도가 높은 종이를 제조할 수 있었다.6. CL종의 난황콜레스테롤 수준에 대한 계란의 일령 상호간에는 전체적으로 상호간에 차이가 없었다. 7. 26주령시 혈중콜레스테롤 수준은 CL종이 다른 두 육계종들 보다 유의적 (P$\leq$0.05)으로 높았다. 8. 성별간 혈중콜레스테롤 수준의 차이는 CL종, BR1 및 BR2 중에서 CL종에서만 나타났으며, 수컷은 암킷보다 혈액 100 mL당 약 90 mg이 낮았다.구체적인 생화학적인 연구가 이루어져야 될 것으로 여겨진다.야 할 것으로 사료된다. 냉장 저장을 하고 저장기간이 길어질 경우는 냉동저장을 사용하는 것이 바람직하다고 생각된다.S, FOS나 말티톨로 대체된 스폰지 케익은 설탕 100% 사용한 케익과 비교하여 크게 나쁘지 않거나 휠씬 나은 특성을 보이므로 스폰지 케익 제조에 그들의 이용이 가능함을 확인하였다.thione 같은 다른 항산화제의 절약 효과, CYP2El의 유도 저하를 통하는 것으로 생각되며 그중 어떤 것에 가장 큰 영향을 받는 지는 아직 알려지지 않았고 더욱 많은 연구가 요구된다.우와 사료에 $\omega$3계 지방산 급원을 첨가, 동물에게 이행시켜 $\omega$3계 지방산 강화식품을 제조하는 두 가지 방법이 있을 수 있는데 전자는 통조림, 과자, 건강보조식품류에 다용되며 후자는 다양한 기능성 축산식품에 활용되고 있다. $\omega$3계 지방산 강화 축산식품에는 돼지고기, 우유, 치이즈, 계란, 분유, 햄 등 다양한 제품에 활용, 개발되고 있으며 최근에는 이러한 식품 개발에 더욱 박차가

• Journal of the Korean Society of Food Science and Nutrition
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• v.21 no.5
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• pp.502-508
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• 1992

From 1969, when the National Nutrition Survey started, to 1989, survey methods are studied for each year. survey methods are examined about the area surveyed, the size and the contents of survey. The National Nutrition Survey are supervised by the Ministry of Health and Social Affairs (MOHSA). The department in charged are changed according to the reorganization of the ministry. Items of the physical examination in the contents of survey are decreased. Sampling methods are changed two times. Until 1974, area and household surveyed are smaller than 1,000 households. From 1989, the number of households surveyed are 2,000. The number of subject surveyed are changed at 1974, 1983 and 1988. From 1988, the number of subject surveyed are about 8,000. Seasons for the survey are summer before 1978 and fall after that. The result suggests that careful attention should be paid to analyzing results of survey because of variation in seasons.

• 한국지구물리탐사학회:학술대회논문집
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• 2008.10a
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• pp.85-92
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• 2008

National Oceanographic Research Institute is carrying out an oceanographic survey for the entire sea areas around Korean Peninsula annually starting with the East Sea from 1996 by establishing a national oceanographic basic map survey plan for the sea areas under the jurisdiction of Korea, so this paper used the oceanographic geomagnetism data measured at the southern area of the Yellow Sea using 'Hae Yang 2000' in 1999, aiming at clarifying the cause of geomagnetic abnormality zone during the course of treating and analyzing the geomagnetic data. For treatment of magnetic data, we obtained electromagnetic force values and geomagnetic abnormality values around the investigated sea area through a process of searching and removal of bad data, correction of sensor positions, correction of magnetic field effects around the hull, correction of diurnal variation, normal correction, correction of cross point errors, etc. The electromagnetic force distribution around the investigated sea area was $49000\;{\sim}\;51600\;nT$, which is judged to be within the normal electromagnetic force intensity distribution range around the Yellow Sea. The isodynamic lines are distributed in Northeast-Southwest direction, and electromagnetic force values are increasing toward the northwest. The result of comparing the magnetic abnormality around the sea area among $124^{\circ}$ 49' 48" E, $35^{\circ}$ 10' 48" N $\sim$ $125^{\circ}$ 7' 48" E, and $35^{\circ}$ 33' 00" N sections with the elastic wave cross section and the result of modeling coincide well with the underground geological structure clarified from the existing elastic wave survey cross section. Therefore, it is judged that the distribution of magnetic force abnormality generally shows the effect pursuant to the distribution of the sedimentary basins in the Tertiary period and the bedrocks in the Cretaceous period which are well developed in the bottom of the sea.

• Korea Real Estate Review
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• v.27 no.3
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• pp.103-118
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• 2017

Under the ownership pre-sale system in the South Korean apartment market, developers can sell apartment ownerships as soon as they start to construct an apartment complex. In the South Korean apartment market, people call this kind of ownership "Bun-yang right." There is a time difference between ownership sale and apartment completion under the ownership pre-sale system. The pre-completion apartment ownerships can be resold to third parties until the apartment complexes are completed, which is called "Geon-mae" of the Bun-yang right. Using survival analysis, this research analyzed the elapsed time between ownership purchase and resale to a third party using 48,316 apartment units nationwide in the 192 complexes supplied from 2000 to 2016. Specifically, this study analyzed the influence of the real estate policy, contract term, location, apartment complex, and unit characteristics on the elapsed time between ownership purchase and resale to a third party. The empirical analysis revealed that the real estate policy and contract term characteristics have a significant effect on the elapsed time between ownership purchase and resale to a third party. Also, this study confirmed that the product characteristics, such as the location and apartment complex and unit characteristics, have an influence on the elapsed time between ownership purchase and resale to a third party.

• Clean Technology
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• v.29 no.3
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• pp.227-234
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• 2023

Recently, local governments have recognized river zones as leisure spaces and local festival venues, and hence, the pressure for developing these zones has increased significantly. However, given the unique functionalities of river zones and the time and costs associated with maintaining facilities and restoring damaged areas, a development plan must be selected carefully. To preserve river zones and to facilitate nature-friendly space utilization, this study focused on improving environmental impact assessment (EIA), which is an institutional implementation procedure for project plans. This study prepared a draft guide for EIA by providing an overview of the research background and survey outcomes, including the status of laws and regulations on river zones, development plans, and opinions on EIA. The results showed that because strategic EIA of basic river plans is important for district designation of river zones and the scope and direction of space utilization, it is necessary to establish a more meticulous business plan before reviewing and evaluating the mini EIA linked to the future implementation of a plan to derive a reasonable assessment. Additionally, this study provides a draft guide for EIA to evaluate the suitability of water-friendly facility construction plans considering the location characteristics and to reflect the factors that can reduce the environmental impacts during the mini EIA stage. In the future, we expect that the results of this study will serve as a foundation for establishing instructions and guides for the development of nature-friendly and water-friendly facilities in river zones during the establishment of plans.

• Korean Journal of Remote Sensing
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• v.39 no.5_1
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• pp.495-505
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• 2023

The Musan mine, situated in Musan County, Hamgyong Province, North Korea, stands as a prominent open-pit iron mine on the Korean Peninsula. This study focuses on estimating the mining and dumping activities within the Musan mine area by analyzing digital elevation model (DEM) changes. To calculate the long-term volume changes in the Musan mine, we digitized and converted the 1:200,000-scale third topographic map of the Joseon published in 1918 and compared with interferometric synthetic aperture radar (InSAR) DEMs, including Shuttle Radar Topography Mission DEM (2000) and Copernicus DEM (2011-2015). The findings reveal that over a century, Musan mine yielded around 1.37 billion tons of iron ore, while approximately 1.06 billion tons of waste rock were dumped. This study is particularly significant as it utilizes a historical topographic map predating the full-scale development of Musan mine to estimate a century's mining production and waste rock deposition. It is expected that this research provides valuable insights for future investigation of surface change of North Korea where the acquisition of in situ data remains challenging.

• 한국공간정보시스템학회:학술대회논문집
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• 2005.05a
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• pp.243-248
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• 2005

우리나라의 농업은 주곡의 지속적인 자급기반을 마련하고 이제 단순한 농사형태에서 벗어나 새로운 소득작목을 개발하고 합리적인 경영개선을 통하여 소득을 높이는 상업농시대에 접어들게 되었다. 따라서 상업농시대에는 농업도 새로운 기술을 바탕으로 질 높은 농산물을 안정적으로 생산공급할 수 있는 기술의 확보가 더욱 요구되고 있다. 최근 농산물수입개방 시대에 접어들게 되면서 우리 농산물도 국제경쟁력향상을 위한 품질향상 및 새로운 소득작물의 개발이 절실히 요구되는 시점에 와있다. 여러 지방지치단체에서 그 지방에 알맞은 소득작물을 개발하여 많은 소득을 올리고 있는 사례를 많이 볼 수 있다. 예로서 보성의 녹차, 무안의 무화과, 구례의 오이 등이 대표적인 예라고 할 수 있다. 여러 농업연구기관에서도 과학적인 토양연구로 세부정밀토양조사를 실시하고 작물재배의 부적지에 대해서는 토양개량방법을 연구하고 있으며 그에 따른 시비추천과 소득작물의 적지적작추천을 하고 있다. 국내에서도 GIS의 발전 및 RS의 발전과 더불어 친환경농업의 일환으로 정밀농업분야에 많은 관심이 집중되고 있다. 정밀농업은 농업생산기술 분야에서 아직 생소한 접근방법으로서 여기에서는 지구측위시스템(GPS)와 지리정보시스템(GIS), 원격탐사(RS)기법들이 많이 응용되고 있다. 또한 농업의 1차(식량생산)적인 목적에서 2차, 3차(소득증대 및 부가가치 증대)적인 목적으로 변화되고 있다. 각 지자체에서 그 지역에 적합한 농산물 재배를 위한 재배단지 확산방안 연구가 진행중에 있으며, 과거 토양속성인자를 가지고 재배적지 선정을 해왔으나, 본 연구에서는 GIS와 RS을 중첩하여 적지선정에 관한 최적의 시스템을 구현하였다. 이런 적지 선정을 통하여 유기농업의 실현을 도모하여 소비자의 욕구에 맞는 작물 생산 및 농촌관광단지 조성을 통해 부가가치증대 및 소득증대를 꾀함으로 농촌문제 해결에 도움이 될 것으로 기대된다. 본 연구를 통해 GIS 와 RS의 기술이 농촌분야에 더 효율적으로 적용될 것으로 기대되며, 농업기술센터를 통한 정보제공을 함으로써 대농민 서비스 및 농업기관의 위상이 제고 될 것으로 기대된다.

• Korean journal of communication and information
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• v.70
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• pp.66-94
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• 2015

Postcolonialism, as a school of thought, has become enormously influential for understanding the recent phenomena of globalization. While rejecting the universalizing categories of the Enlightenment, postcolonialism has called into question the old idea of culture and identity as a transcendent regime of authenticity and purity. It has also celebrated the diasporic experiences that entail porous and hybrid cultural identities as a potential site of struggle and resistance against the dominant cultural and discursive order. It is argued, however, that postcolonial theory's emancipatory claims relating to the diversified global culture tend to be complicit with transnational capitalism that brings about global issues of material as well as cultural injustice. This article, through a thorough review of the ways the postcolonial theoretical framework has been developed and appropriated by main figures in postcolonial scholarship, seeks for a theoretical and critical strategy to grasp the complex conditions of global inequality.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.2 no.2
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• pp.49-52
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• 1997

The man-made lake, Shihwa, was constructed in January, 1994 as a part of the 'development project of the Shihwa area'. The lake area was a typical coastal ocean environment before the construction, but after constructing the dikes to block the sea water inflow, the lake is in the process of becoming a freshwater lake, and faces various ecological changes. Due to the polluted water inflow from the neighboring industrial complex and Ansan city, many negative effects appear. In this group study we conducted integrated ecosystem investigations of the lake Shihwa and the adjacent coastal area in order to find out how the ecosystem is controlled by artificial changes of the lake environment. The results are compiled in the following several articles of this issue: Park et ai. (1997), Han et al. (1997). Choi et ai. (1997), Park and Huh (1997), Ryu et at. (1997), Lee et al. (1997).