• 한국정보통신학회논문지
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• 제25권12호
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• pp.1942-1948
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• 2021

우리나라 토지공부는 일제 시대의 낙후된 기술로 정립되어 현재 국내 토지의 15%가 지적도와 맞지 않는다. 이에 정부는 '지적재조사 사업'이라는 이름 아래 우리나라 토지공부를 정립하고 측량 원점을 세계측지계로 변경 중에 있다. 지적재조사 사업이 끝난 후 우리나라 디지털 정보 서비스가 구축되어 디지털 지적정보가 제공될 때, 그 정보를 이용하여 손쉽게 측량할 수 있는 드론 경계 복원 측량 방법을 제안한다. Mobile GCS는 모바일 어플로 드론을 제어하고 토지공부에 기록된 경계점 좌표를 획득하여 드론이 자동 비행하여 경계점을 표시하도록 한다. 개발한 프로토타입 드론으로 6개 경계점을 2분 내로 순회하였다.

• Animal Bioscience
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• 제36권5호
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• pp.692-703
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• 2023

Objective: The main goals of this investigation were to i) assess the population structure and genetic diversity and ii) determine the efficiency of the ongoing breeding program in a closed flock of Angora rabbits through pedigree analysis. Methods: The pedigree records of 6,145 animals, born between 1996 to 2020 at NTRS, ICAR-CSWRI, Garsa were analyzed using ENDOG version 4.8 software package. The genealogical information, genetic conservation index and parameters based on gene origin probabilities were estimated. Results: Analysis revealed that, 99.09% of the kits had both parents recorded in the whole dataset. The completeness levels for the whole pedigree were 99.12%, 97.12%, 90.66%, 82.49%, and 74.11% for the 1st, 2nd, 3rd, 4th, and 5th generations, respectively, reflecting well-maintained pedigree records. The maximum inbreeding, average inbreeding and relatedness were 36.96%, 8.07%, and 15.82%, respectively. The mean maximum, mean equivalent and mean completed generations were 10.28, 7.91, and 5.51 with 0.85%, 1.19%, and 1.85% increase in inbreeding, respectively. The effective population size estimated from maximum, equivalent and complete generations were 58.50, 27.05, and 42.08, respectively. Only 1.51% of total mating was highly inbred. The effective population size computed via the individual increase in inbreeding was 42.83. The effective numbers of founders (f_e), ancestors (f_a), founder genomes (f_g) and non-founder genomes (f_ng) were 18, 16, 6.22, and 9.50, respectively. The fe/fa ratio was 1.12, indicating occasional bottlenecks had occurred in the population. The six most influential ancestors explained 50% of genes contributed to the gene pool. The average generation interval was 1.51 years and was longer for the sire-offspring pathway. The population lost 8% genetic diversity over time, however, considerable genetic variability still existed in the closed Angora population. Conclusion: This study provides important and practical insights to manage and maintain the genetic variability within the individual flock and the entire population.

• 한국결정성장학회지
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• 제2권1호
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• pp.20-29
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• 1992

전영역에 결쳐서 고용영역이 존재하는 $BaTiO_3-NaNbO_3$계에서, congruent melting composition인 $30BaTiO_3{cdot}70NaNbO_3$조성의 고용체 단결정을 Czochralski법에 의하여 육성하였다. 직경 15-50mm, 길이 20-30mm인 단결정이 결정인상속도 2.0mm/h, 결정회전수 5.0-1-rpm에서 육성되었다. 그러나 결정 육성중 육성되는 결정의 열전도도가 낮기 때문에, 발생하는 잠열(latent heat)의 방출이 충분치 않아 고-액계면이 평탄하게 유지되지 않았고 그결과로 육성된 결정중에는 corestructures가 관찰되었다. 육성된 결정에서 core 부분을 제외한 다른 부분은 inclusion등이 없는, 광학적으로 균질한 단결정이었고 가시광 영역에서 양호한 광투과율을 보였다.

• 한국의상디자인학회지
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• 제9권1호
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• pp.103-122
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• 2007

Fashion have been expressed by a face through various a period, social change, and various culture changing. Human expresses as "Transformation" by applying these needs of changing to the fashion. A origin tribe expressed its own self by using direct body transformation and extreme decorations in the past. However, human express creative and esthetic desire based on shape, material, and transformation method in the present time characteristics of the body. Exceptional transformation breaking a existing fixed idea appeared frequently due to dissolution through transformation which is positive expression method in the fashion from 20th century. As a results, followings are obtained in this study. First, human body transforms by using a tool or intermediation in investigation of aesthetic meaning for human body. The object, Transformation, is stably transformed by disintegration, distortion, exaggeration and simplification reduction, as design's sensitivity. Second, transformation from relation of clothing composition is expressed by extension, reduction, simplification, and dissolution. In transformation from original tribe's sensitivity, past decorative desire lead to transformation of human body. To give variable change from past to present fashion, external formative will is introduced. Then, extreme expression is made by direct transformation of clothing type. It seems to be accomplished that human body's expression method is continuously changed into extension, exaggeration, reduction, and dissolution from transformation method as described before. Transformation of modem fashion is expression method by creative supervision. Extreme transformation substituted body's each part is based on immanent play and representative satisfaction. Through these transformation, it is judged that variety of creative type is achieved.

• 자원환경지질
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• 제39권4호
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• pp.485-494
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• 2006

1920년대의 온천조사에서부터 현재에 이르기까지 우리나라 지열연구의 역사를 간략히 요약하고, 우리나라의 지열류량 연구 결과 및 추세, 지열의 근원 연구, 그리고 지열에너지 개발 및 활용분야에 대한 연구활동을 정리하였다. 우리나라에서의 지열연구는 1970년대까지 주로 온천조사와 관련되어 있다. 1980년대에 들어서 연구소와 학계에서 온천조사 뿐만 아니라, 지열류량에 대한 연구도 많이 수행하게 되었으며 1996년도에는 우리나라 전국적인 지온경사 분포도와 지열류량 분포도를 발간하게 되었다. 또한 우리나라 온천수에 대한 지화학적 동위원소 분석과 화강암 지대의 열생산율 측정도 1990년대에 주로 이루어졌다. 지열개발과 활용에 대한 시도는 1990년대 초반부터 시도되었으나 실제 개발을 위한 시추로 이어지게 된 것은 2000년대에 들어와서 가능해졌다. 최근의 활발한 심부 지열수 자원 개발이나 천부 지중열을 활용한 냉난방 수요의 증가 등 주변여건이 호전됨에 따라 우리나라 지열연구개발의 전망은 밝다고 판단된다.

• Journal of Ecology and Environment
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• 제46권1호
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• pp.41-53
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• 2022

Background: Due to the rapidly changing climatic conditions, South Korea faces the grand challenge of exotic species. With the increasing human movement, the influx of alien species to novel regions is prevalent across the globe. The latest research suggests that it is easy to prevent the introduction and establishment of alien species rather than controlling their spread and eradication. Like other countries, the Korean Ministry of Environment released a list (in 2018) of 45 potential risky exotic fish species considered likely to be invasive candidate fish species if they ever succeed in entering the Korean aquatic ecosystems. Results: The investigation into the invasion suitability traits showed that potential risky fish species could utilize those features in becoming invasive once they arrive in the Korean aquatic ecosystems. If the novel species establish viable populations, they are likely to incur higher economic costs, damage the native aquatic fauna and flora, and jeopardize the already perilled species. Furthermore, they can damage the installed infrastructure, decline overall abundance and biodiversity, and disturb the ecosystem services. Here we reviewed the list of fish species concerning their family, native origin, preferred aquatic biomes, main food items, current status in Korea, and potential threats to humans and the ecosystems. Data shows that most species are either already designated as invasive in the neighboring counties, including Japan, Vietnam, Thailand, and China, or originate from these countries. Such species have a higher climate match with the Korean territories. Conclusions: Therefore, it is exceptionally essential to study their most critical features and take regulatory measures to restrict their entry. The incoming fish species must be screened before letting them in the country in the future. The regulatory authorities must highlight the threatening traits of such species and strictly monitor their entrance. Detailed research is required to explore the other species, especially targeting the neighboring countries fish biodiversity, having demonstrated invasive features and matching the Korean climate.

• 수산해양기술연구
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• 제43권4호
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• pp.355-361
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• 2007

A giant jellyfish (Nemopilema nomurai), which is presumed developing in the East China Sea, is recently one of major issues in the Northeast Asia region due to its fatal damage to the fishery. The biomass estimates have generally been conducted by trawl sampling and sighting survey methods. The biological research is also needed to clarify such environmental origin or diurnal migration patterns. While trawl sampling or sighting survey methods are effective to investigate its density estimates in its distributed community of near bottom or surface, they have a problem in investigation on the vertical distribution of jellyfishes. In this case, an echo sounding detection would have an advantage to survey it more extensively and effectively. This trial was conducted to observe the vertical distribution of giant jellyfish, where thermocline strongly formed, during mooring at each station of the East China Sea and southern coastal area using acoustical and optical methods. By the results, they were observed to exit and move at the water column under the thermocline using the optical camera and echo sounder system, and the information was analyzed to find out the acoustical sound scattering characteristics relatives to 120kHz frequency. These results can be utilized effectively to estimate the vertical distribution and biomass of Giant jellyfish with comparing results from trawl sampling and sighting survey methods, hereafter.

• 한국자기학회지
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• 제7권4호
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• pp.205-211
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• 1997

E-Beam Evaporator로 제조된 CoCrTa/CrNi 자성박막에서 하지층인 Cr에 대한 소량첨가원소인 Ni이 자성박막의 자기적 성질에 어떤 영향을 미치는가를 조사하였다. 상온에서 제조된 시편에서 소량의 첨가원소 Ni의 영향은 보자력의 증가를 가져왔음을 알 수 있었다. 이러한 보자력 증가의 원인을 XRD와 AFM으로 그 결정배향성과 미세구조를 통하여 살펴보았다. Cr 하지층에 Ni의 첨가시 결정립의 크기가 증가함을 알 수 있었다. 280 .deg. C 기판온도에서는 CrNi 하지층을 갖는 박막이 오히려 낮은 보자력 값을 나타내었고 이것은 결정립 크기의 증가때문으로 생각된다. 높은 기판온도에서는 결정배향성보다 Cr의 편석이 보자력에 대한 주요한 기구인 것으로 생각된다.

• Ocean and Polar Research
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• 제29권3호
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• pp.263-271
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• 2007

The survival strategies of polar organisms at permanently or extremely cold temperatures and their application to cryobiology were reviewed here. In addition, ongoing studies on psychrophiles also were described. Psychrophiles are extremophiles that can grow and reproduce in cold temperatures, typically at -10 to $20^{\circ}C$. These organisms developed various mechanisms of adaptation to extremely cold environments. Polar organisms cope with these extreme physicochemical conditions using strategies such as avoidance, protection and partnership with other organisms. Understanding on the strategies adopted by polar organisms may provide insight on the physiological process that cells can go through during freezing. Cryopreservation may be able to take advantage of the findings described above. Currently, genomes of many cold-loving organisms have been sequenced and comparative genomics has revealed, at a molecular level, the characteristics of these organisms. The investigation of microorganisms on the polar glaciers may expand our understanding on the origin of life on Earth and other planets.

• Human Ecology Research
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• 제51권4호
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• pp.455-472
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• 2013

This paper's aim is to explore how China's country image affects the product evaluations and purchase intentions through three major hypothesize. Four hundred eighty-nine Korean adult consumers, who have the purchase experiences of goods made in China before, were invited to take part in this investigation. Data analyses were conducted by reliability test, confirmatory factor analysis and structural equation modeling with SPSS ver. 19.0 and AMOS ver. 18.0. This study focused on multi-dimensional country image and found that China's country image contains 5 elements (people, evolution, politic, economic and culture). Empirical verification through structural equation modeling indicates that the data offer substantial supports, such that China's country image represents the predominant influence on product evaluations and people, evolution, and politic image showed positive effects. Also, China's country image has a positive influence on the product purchase intentions directly (culture image) and indirectly (people, politics, and evolution image) through the product evaluations. Practical implications of findings will be discussed and suggested as follows. First, this study complements the lack of researches on China among the studies regarding country image. Secondly, research results would help us to understand the perception on China's country image of Korean consumers' and to seek the criteria by which consumers evaluate goods made in China. Finally, this research can help Chinese companies to make market strategies effectively when they entering Korean market by exploring the factors which have strong influences on Korean consumers' purchase behaviors.