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The furan functionalized polymethacrylates (rPFMA and dPFMA) which have different electron density in the furan pendant groups were synthesized. The furan functionalized polymethacrylates (rPFMA and dPFMA) were polymerized via free-radical polymerization. The selfhealing properties of polymers which have different electron density were confirmed via various measurements. Two types of polymers have different healing efficiencies because of their different electron density. Therefore, it is confirmed that the electron density in the furan pendant groups controls the reactivity of the Diels-Alder reaction. Further analysis and characterization of this self-healing system will be presented at the conference.
Objectives: On February 26, 2021, coronavirus disease 2019 (COVID-19) vaccination was started for high-priority groups based on the recommendation of the Advisory Committee on Immunization Practices with 2 available COVID-19 vaccines (AstraZeneca and Pfizer-BioNTech) in Korea. This report provides a summary of adverse events following COVID-19 vaccination as of April 30, 2021.Methods: Adverse events following immunization are notifiable by medical doctors to the Korea Immunization Management System (KIMS) under the national surveillance system. We analyzed all adverse events reports following COVID-19 vaccination to the KIMS from February 26 to April 30, 2021. Results: In total, 16,196 adverse events following 3,586,814 administered doses of COVID-19 vaccines were reported in approximately 2 months (February 26 to April 30, 2021). Of these, 15,658 (96.7%) were non-serious adverse events, and 538 (3.3%) were serious adverse events, including 73 (0.5%) deaths. The majority of adverse events (n=13,063, 80.7%) were observed in women, and the most frequently reported adverse events were myalgia (52.2%), fever (44.9%), and headache (34.9%). Of the 73 deaths following the COVID-19 vaccination, none were related to the vaccines.Conclusion: By April 30, 3.6 million doses of the COVID 19 vaccine had been given in Korea, and the overwhelming majority of reports were for non-serious events. The Korea Disease Control and Prevention Agency continues to monitor the safety of COVID-19 vaccination.
In this paper, we propose an algorithm that controls the expansion of the search window due to similar color background and moving objects, which is a disadvantage of CAM-shift. The proposed method designates the moving object to be tracked by using the search window designation method of the existing CAM-shift, extracts the feature points of the moving object by dividing the upper body and the lower body inside the designated search window, and finds the histogram. The feature points extracted from the upper and lower bodies are compared with the pixels of the histogram to determine the final feature points of the object by dividing the upper and lower bodies. Finally, we apply the RANSAC algorithm to find the histogram average of the extracted feature points and create a new search window. and constantly updates new search windows to keep track of objects. Finally, several experiments demonstrate the feasibility and applicability of the proposed method.
The purpose of this study is to provide the basic data for management of the ecosystem of Baekdudaegan Mountains by surveying and analysing the vascular plants distributed from Hyangrobong area to Guryongryeong area. The numbers of vascular plants in the whole survey areas were summarized as 633 taxa including 95 families, 321 genera, 549 species, 4 subspecies, 70 varieties, and 10 forms. There were 285 taxa in Hyangrobong area, 256 taxa in Masanbong area, 318 taxa in Mt. Seoraksan area, 281 taxa in Mt. Jeombongsan area, 173 taxa in Bukamryeong and Ohsaekcheon valley area, 197 taxa in Soenadeuri area, 203 taxa in Yeongarigol area, and 168 taxa in Guryongryeong area. The endangered species were 2 taxa including Leontice microrrhyncha and Smilacina bicolor. The rare plants were 39 taxa including Pinus pumila, Halenia corniculata, Juniperus chinensis var. sargentii, and so forth. In IUCN Red List categories, there were 2 taxa of CR, 7 taxa of EN, 10 taxa of VU, 18 taxa of LC, and 2 taxa of DD. The Korean endemic plants were 23 taxa including Salix koriyanagi, Anemone koraiensis, Lespedeza maritima, Cirsium setidens, Saussurea seoulensis, Carex okamotoi, and so forth. The plants adaptable to climate change were 48 taxa including 17 taxa of endemic plants, 1taxon of southern plant, and 30 taxa of northern plants. The naturalized plants were 32 taxa including Fallopia dumetorum, Cerastium glomeratum, Papaver rhoeas, Bidens frondosa, Lolium perenne, and so forth.The invasive alien plants were 3 taxa including Rumex acetocella, Ambrosia artemisiifolia, and Ambrosia trifida. 본 연구의 목적은 백두대간의 향로봉에서부터 구룡령까지 분포하는 관속식물상을 조사 및 분석하여 백두대간의 산림생태계 관리를 위한 기초 자료를 제공하기 위함이다. 전체 조사지역의 관속식물상은 95과 321속 549종 4아종 70변종 10품종 등 633분류군이며, 향로봉 일원은 285분류군, 마산봉 일원은 256분류군, 설악산 일월은 318분류군, 점봉산 일원은 281분류군, 북암령과 오색천 계곡 일원은 173분류군, 쇠나드리 일원은 197분류군, 연가리골 일원은 203분류군, 구룡령 일원은 168분류군으로 나타났다. 멸종위기야생식물 II급은 한계령풀과 자주솜대 2분류군이다. 희귀식물의 경우 눈잣나무, 닻꽃, 눈향나무 등 39분류군이며, 멸종위기종(CR)은 2분류군, 위기종(EN)은 7분류군, 취약종(VU)은 10분류군, 약관심종 (LC)은 18분류군, 자료부족종(DD)은 2분류군이다. 한국특산식물은 키버들, 홀아비바람꽃, 해변싸리, 고려엉겅퀴, 분취, 지리대사초 등 23분류군이다. 기후변화 적응 대상식물은 48분류군이며, 특산식물은 17분류군, 남방계식물은 1분류군, 북방계 식물은 30분류군이다. 귀화식물은 닭의덩굴, 유럽점나도나물, 개양귀비, 미국가막사리, 호밀풀 등 32분류군이며, 생태계교란식물은 애기수영, 돼지풀, 단풍잎돼지풀 3분류군이다.
The purpose of this study is to present the basic data for establishing the management plan of forest ecosystem in Honam-Jeongmeak and Geumnamhonam-Jeongmaek by surveying and analysing the vascular plants distributed in Jangansan(A-site), Palgongsan(B-site), Mandeoksan(C-site), Chuwolsan (D-site), Cheonunsan(E-site) and Jeamsan(F-site). The numbers of flora were 813 taxa including 115 families, 406 genera, 700 species, 4 subspecies, 94 varieties and 15 forms. There were 500 taxa in A-site, 427 taxa in B-site, 402 taxa in C-site, 449 taxa in D-site, 345 taxa in E-site and 524 taxa in F-site. The rare plants were 12 taxa including Paeonia japonica, Iris minutoaurea, Chloranthus fortunei and so forth. In IUCN Red List categories, there were 1 taxon of EN, 2 taxa of VU, 8 taxa of LC and 1 taxon of DD. The Korean endemic plants were 20 taxa including Salix koriyanagi, Thalictrum actaefolium var. brevistylum, Saussurea pseudogracilis and so forth. The specific plants by floristic region were 108 taxa including 58 taxa of grade Ⅰ, 30 taxa of grade Ⅱ, 16 taxa of grade Ⅲ, 2 taxa of grade Ⅳ and grade Ⅴ, respectively. The plants adaptable to climate change were 18 taxa including 11 taxa of southern plant and 7 taxa of northern plants. The naturalized plants were 49 taxa including Rumex nipponicus, Brassica juncea, Trifolium repens and so forth. The invasive alien plants were 4 taxa including Rumex acetocella, Solanum carolinense, Ambrosia artemisiifolia and Aster pilosus.
The purpose of this study is to present the basic data for establishing the plan of usage and manage- ment of healing forest by surveying and analysing the vascular plants distributed in Jangseong Healing Forest. The numbers of vascular plants were summarized as 338 taxa including 85 families, 211 gen- era, 294 species, 3 subspecies, 33 varieties and 8 forms. In the result of life form, hemicryptophytes and geophytes were the most common and hydrophytes were the least. The rare plants were 5 taxa including Abies koreana Wilson(planted), Thuja orientalis L.(planted), Scutellaria insignis Nakai, Tricyrtis macropoda Miq. and Arisaema heterophyllum Blume. The Korean endemic plants were 12 taxa including Philadelphus schrenkii Rupr., Indigofera koreana Ohwi, Lycoris flavescens M.Y.Kim & S.T.Lee and so forth. The specific plants by floristic region were 28 taxa including 2 taxa of grade Ⅳ, 3 taxa of grade Ⅲ, 7 taxa of grade Ⅱ and 16 taxa of grade Ⅰ. The naturalized plants were 20 taxa including Fallopia convolvulus (L.) A.Löve, Ailanthus altissima (Mill.) Swingle, Veronica arvensis L., Poa pratensis L. and so forth. The invasive alien plants were Rumex acetocella L. and Ambrosia artemisiifolia L..
This study examines the characteristics of expressing hippie styles in contemporary women’s collections and analyzes them to benefit future fashion design and research. This study reviewed advanced research, fashion magazines, and information providers. The advanced research determined the study’s scope by pinpointing the designers who introduced the hippie style into their collections. The results are as follows: First, the reproduced hippie style appears as the combination of various colors and materials, a convergence or mixture of styles, or the use of collage or patchwork. It employs natural silhouettes or varied colors and materials, which makes the renewed hippie style more luxurious than in the past. Second, the reproduced hippie style emphasizes and distinguishes between two types of femininity: a girlish, romantic image using A-line silhouettes and, bright, gleaming colors, and a sexy version that boldly exposes the body or women’s curves and, uses soft and flexible materials. Third, the exotic tendencies found in the reproduced hippie style reflect the characteristics of the times, folk costume, or eastern or western features perceived as exotic. Recently, traditional costumes have changed slightly to recall characteristics found in the past. Fourth, the reproduced hippie style reflects hippies’ affection for and interest in nature by using environmentally-friendly materials like natural fibers. Flowers, the symbol of hippies, appear most frequently.