• 한국환경복원기술학회지
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• 제12권1호
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• pp.82-91
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• 2009

Research was initiated to investigate vegetation characteristics of native ('Pureundle' and 'Sewon') and introduced ('Brilliant' and 'Midnight') Kentucky bluegrass (KB, Poa pratensis L.) varieties by soil-seed applying system on a cut-slope in May 17, 2008. There were no statistic differences observed in soil hardness and soil moisture content while significant differences were observed in surface coverage rate, height and disease occurrence in native and introduced KB varieties. The introduced 'Brilliant' KB was highest in the surface coverage rate from the early period of seeding to August 11, 2008. The surface coverage rate of introduced varieties were high when compared to native varieties in their early growth stage. But native varieties reached to equal surface coverage rate with the introduced varieties when three months after seeding. The height of 'Pureundle' and 'Brilliant' KBs were high compared with Midnight and Sewon KBs. 'Pureundle' and 'Brilliant' KBs were damaged by disease whereas there were no disease occurrence in 'Midnight' and 'Sewon' KBs. Probably, the disease occurrence was close related with the height of KBs not with native and introduced KB varieties. These results indicate that the growth of KB on a cut-slope are statistically affected by varieties in early growth stage of this experiment but reach equal rate between native and introduced KB varieties in three months after seeding. This growth characteristics implies the huge potential of native KB varieties seeding for cut-slope vegetation. Considering that native KB varieties are adapted to a environment and have no risk of causing disturbance to the ecosystem compared to the introduced KB varieties, the use of them as native varieties for a cut-slope vegetation can be increased.

• 영어어문교육
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• 제12권3호
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• pp.51-78
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• 2006

This research conducted between March and December of 2005 has focused on analyzing a diverse range of educational services provided by English native-speaking instructors teaching in Korea. This study includes quantitative research findings from 238 university students. This dual-semester research study focuses on our most recent Korean EFL (English as a Foreign Language) programs provided for university students who wish to improve their English ability. Many students hope to partake in lectures taught by Native English Speaking teachers (hereafter NS teachers), and many universities are also willing to open additional courses for these students. However, in order for lectures to be most effective, NS instructors need to be appropriately trained or qualified teachers in order to successfully educate their students. Furthermore, NS teachers need to constantly review their teaching styles and strategies to allow for professional development and to ensure an improvement in their teaching methodology. Overall, this research provides whole English lecture views of NS teachers that is data-driven regarding designing, implementing, evaluating, and reforming the education of English taught by NS teachers working in Korea.

• 한국환경복원기술학회지
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• 제5권3호
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• pp.50-57
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• 2002

The restoration techniques of large disturbed land containing native forest resources and soil animals were investigated on the new campus area of Kyushu University in Japan. Important techniques to restore native forest and biodiversity in that area are transplantation of existing large trees, transplantation of the forest soil, transplantation of native tree stools, and the reuse of wood and bamboo chips. The benefits can be obtained by using these methods. Firstly, the native genetic resources that would be discarded as part of the land development can be reused. Secondary, the time taken to become a high growth forest as opposed to the practice of planting saplings or grass seeds can be reduced. At last, the native forest ecosystem containing various under-story vegetations and soil animals can be conserved and regenerated. In addition, big and small ponds were constructed in the biodiversity preservation zone to preserve rare plants, rare animals, and native aquatic animals. And these plants and animals were transplanted and moved to ponds.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.71.1-71
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• 2003

Most major plant pathogenic bacteria in Korea belong to Xanthomonas spp.. Xanthomonas oryzae pv. oryzae is a major pathogen in rice, X. campestris pv. vesicatoria in pepper, X. axonopodis pv. giycines in soybean, X. campestris pv. campestris in cabbage, and X. axonoposid pv. citri in tangerin. Host specificity of the bacterial pathogen depends on the avirulence gene in the pathogen and the corresponding resistance gene in host plants. Many avirulence genes in bacteiral pathogen located on the native plasmids. However, the presence of the native plasmids in Xanthomonas spp. was not investigated well. In order to study the host specificity, we isolated native plasmids from Xanthomonas spp. and compared those plasmids each other, The presence of the native plasmids and the characteristics of the plasmids depended on the bacterial strains. In the X. axonopodis pv. glycines, most strains carried native plasmids but some strains did not. Some strains carry about 60 kb native plasmids including 3 different aviurlence genes. We will discuss the characteristics of the native plasmids isolated from the Xanthomonas spp.

• 한국환경복원기술학회지
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• 제8권1호
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• pp.10-16
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• 2005

This experiment was conducted to study on application of several Korean native plants by seed spray methods for cut slope revegetation, and possibility of replacement almost imported tall fescue seeds by native herbaceous plants. So, we investigated growth and covering rate after sowing native plants seeds at the artificial slope plots in Suwon and the rock exposed cut-slopes in Wonju city. Emergence rate after seed spray at artificial slopes were higher Elsholtzia splendens and Dianthus superbus var. longicalycinus, showing the highest in E. splendens. Also, E. splendens, D. superbus var. longicalycinus, and Agrostemma coronaria were possible to use for seed spray at the rock exposed cut-slopes. The plots of mixed native plants show more seasonal scenery than that of tall fescue. Soil surface run-off by Typhoon was less in plot sown native plants than those of lawn grass, resulting fresh weight of roots was heavier. Thus, we found that the mixed seed spray of several native herbaceous plants, E. splendens, D. superbus var. longicalycinus, and Agrostemma coronaria, were well covered the slopes as tall fescue.

• 한국인구학
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• 제34권3호
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• pp.109-138
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• 2011

우리나라에서 '동향'은 배우자의 선택에서 주요 요인의 하나이다. 본 연구는 1993년~2009년 기간의 통계청 혼인통계자료를 사용해 우리나라 동향결혼의 변동추세와 현황을 분석하고 이를 토대로 동향결혼 선택확률에 영향을 미친 각종 요인을 고찰하는 데에 목적이 있다. 본 연구의 분석결과에 따르면, 우리나라에서 동향결혼은 여전히 큰 부분을 차지하고 있지만 시간이 지나면서 점차 줄어들고 있다. 또한 동향결혼은 해당 지역에서의 인구이동 및 구성에 의해서도 영향을 받았다. 특히 수도권으로의 인구유입은 타향출신의 결혼 후보자를 접할 기회를 증가시켜 동향결혼비율의 감소를 가져왔다. 또한 자신과 비교해 결혼 상대자의 소득이 더 커질수록 동향결혼을 선택할 가능성은 감소했다. 이는 배우자의 선택에서 동향요인이 약화되고 있는 데에는 경제적 요인도 작동하고 있었음을 의미한다. 본 연구는 방대한 원시자료에 기초해 우리나라의 동향결혼 현상을 실증적 관점에서 규명한 최초의 연구라는 점에서 의의가 있다.

• 한국환경복원기술학회지
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• 제7권1호
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• pp.77-84
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• 2004

This study was conducted to suggest vegetation mat forming methods with native wildflowers, introduced wild flower, grasses and native herb plants which can be used for erosion control of the disturbed slopes. The main results are summarized as follows. In forming the vegetation mat at early stage, foreign grasses, native wild plants shows more effective than the other seed mixture types. But, after 12 weeks, using native wild flowers shows more effective than foreign grasses. Also, the mixture of the native grasses and kentucky bluegrasses (seed mixture type F) are the best in ground coverage among the seed mixtures types. In order to restore slopes more naturally, more diverse plants should be used. The native grasses such as Marrubium incisum Bentham, Lutos comiculatus L. var. japonicus Regel, and Artemisia princeps Pampan seems to be useful to forming the vegetation mat, also it will be more easy if mixing with foreign grasses such as Kentucky bluegrass. The mixture of native grasses and introduced wild flowers are not proper in forming the vegetation mat. Also, pot planting of the native grasses are not proper in forming the vegetation mat.

• Journal of Ecology and Environment
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• 제44권4호
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• pp.256-263
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• 2020

Background: Ambrosia trifida is a highly invasive annual plant, but effective control methods have not been proposed. Among various eradication methods, cutting is a simple measure to control invasive plants, and sowing seeds of native plants may effectively increase biotic resistance to invasion. In this study, we conducted a field experiment with two treatments: cutting and sowing seeds of six native or naturalized plants. Results: We found a significantly lower A. trifida abundance after cutting than in the control (77% decrease). Sowing seeds of native species did not provide any additional benefit for the control of A. trifida, but increased the importance values and diversity of other native vegetation. The abundance of A. trifida was negatively correlated with that of other plant taxa based on plant cover, biomass, and density. However, biotic resistance of sown plants was not effective to control invasion because A. trifida was so competitive. Conclusions: We concluded that cutting is an effective measure to control Ambrosia trifida while sowing seeds of native plants can increase native plant diversity.

• Journal of the Korean Data and Information Science Society
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• 제19권4호
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• pp.1165-1172
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• 2008

A considerable amount of research has focused on the dimensionality of service quality construct. To achieve and maintain their comprehensiveness and profitability, restaurant managers should manage and aim to continuously improve the level of service quality offered to their customers. This paper is focused on service quality in the Korean native cattle and imported beef restaurant industry in the Korea. So, this paper has adapted DINESERV scale so that restaurant managers can use it to determine how customers perceive the service quality in Korean native cattle beef restaurant and imported beef restaurant. The purpose of this research is to test the difference in importance and actual performance of 5 dimensions between the restaurants that sell the beef of Korean native cattle and imported cattle. The t-value is used to test difference of the importance and actual performance for DINESERV's 5 dimensions of the 2 restaurant types. But, there is no difference between Korean native cattle and imported beef restaurant.

• 산업과 과학
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• 제2권4호
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• pp.36-43
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• 2023

넓은 맥락에서, 자생식물은 인공적인 보호나 재배 없이 특정 지역에서 자연적으로 발생하고 번성하는 식물로, 그들이 생존을 위해 가장 적합한 환경에서 자랍니다. 이러한 식물들은 유전자 자원, 번식 재료 및 생명공학 자산으로서 상당한 잠재력을 갖추고 있으며, 식용, 의약, 그리고 장식용 등 다양한 분야에서 발전의 가능성이 있습니다. 자생식물의 가능성을 활용하기 위해, 우리의 목표는 자생식물의 활용, 효과, 유효성분, 추출 방법 등에 초점을 맞춘 국내 특허 분석을 통해 가치 있는 정보를 제공하는 것이었습니다. 한국 산림청에서 등록된 국가 표준 식물 목록을 활용하여, 자생식물과 자생식물 식물 종자 사용과 관련된 988건의 특허에 대한 유효한 데이터를 확보했습니다. 이 분석은 특허의 종합적 검토를 통해 연구 패턴, 주요 기술 수준 및 신흥 트렌드를 밝혀내는 목적이 있었습니다. 결과적으로, 특허 분석을 통해 연구 트렌드와 현재 기술 수준을 확인하고, 자생식물을 활용한 향후 특허 출원을 위한 정보를 제공하기 위한 것입니다.