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Ko, Youkyung,Hwang, Ho Seong,Lee, Myung Gyoon,Park, Hong Soo,Lim, Sungsoon,Sohn, Jubee,Jang, In Sung,Hwang, Narae,Park, Byeong-Gon American Astronomical Society 2017 The Astrophysical journal Vol.835 No.2
<P>We present the results of a wide-field spectroscopic survey of globular clusters (GCs) in the Virgo cluster. We obtain spectra for 201 GCs and 55 ultracompact dwarfs (UCDs) using Hectospec on the Multiple-Mirror Telescope and derive their radial velocities. We identify 46 genuine intracluster GCs (IGCs), not associated with any Virgo galaxies, using the 3D GMM test on the spatial and radial velocity distribution. They are located at a projected distance 200 kpc less than or similar to R less than or similar to 500 kpc from the center of M87. The radial velocity distribution of these IGCs shows two peaks, one at v(r) = 1023 km s(-1), associated with the Virgo main body, and another at v(r) = 36 km s(-1), associated with the infalling structure. The velocity dispersion of the IGCs in the Virgo main body is sigma(GC) similar to 314 km s(-1), which is smoothly connected to the velocity dispersion profile of M87 GCs but is much lower than that of dwarf galaxies in the same survey field, sigma(dwarf) similar to 608 km s(-1). The UCDs are more centrally concentrated on massive galaxies-M87, M86, and M84. The radial velocity dispersion of the UCD system is much smaller than that of dwarf galaxies. Our results confirm the large-scale distribution of Virgo IGCs indicated by previous photometric surveys. The color distribution of the confirmed IGCs shows a bimodality similar to that of M87 GCs. This indicates that most IGCs are stripped off dwarf galaxies and some off massive galaxies in the Virgo.</P>
高裕卿(Ko, Youkyung) 역사교육연구회 2018 역사교육 Vol.145 No.-
This article illuminates the Grünes Band(Green Belt) of Germany, the former inner-German border, as an ecological site of memory. Ecological sites of memory mean historical events that played an important role in the interaction of man and the natural world: they produced a multitude of political, social, cultural and other consequences that still shape environmental debates and practices in our present time. The 1,393 kilometer long, 50-200 meter wide former border line is a monument of contemporary German history, and at the same time is the backbone of a unique network of habitats. Today the Grünes Band is one of the most significant nature conservation projects in Germany. Based on it, the idea of the Green Belt Europe was developed. Moreover, it could become a model for the future of the Korean DMZ. In this sense, the Grünes Band is an ecological site of memory in national, european and global context.
고유경(Ko Youkyung) 역사비평사 2014 역사비평 Vol.- No.108
This paper begins with the question: “Why are political-ideological controversies concerning German history textbooks difficult to ellucidate?”, and searches for answers in the following three contexts. First, the textbook publishing and authorizing policy in Germany is becoming less controlled; it is moving from an official certification system by the states to a free publishing system and thus facilitates the coexistence of varied perspectives and interpretations. The federalist tradition of Germany plays a key role in such changes. Second, with the unification of Germany, Europeanization and a multicultural society, Germany has established an open, pluralistic identity education, which is a crucial part of history education. Third, the narratives and structures of German history textbooks avoid dogmatic interpretations and help cultivate the multi-perspective views of students. Using contemporary German history textbooks as an example, one ensures that the colonial past is interpreted in a national, European and global context.
고유경(Ko, Youkyung) 한국독일사학회 2020 독일연구 Vol.- No.44
이 논문은 라트카우가 개시한 목재 위기 논쟁을 출발점으로 하여 독일 근대 임학의 성립과 그 역사적 의미를 검토한다. 목재 위기 논쟁은 독일 영방국가들이 당대의 목재 부족 현상을 실제보다 과장했다는 주장의 진위 여부를 가리고자 했다. 라트카우는 목재 위기 담론이 숲으로부터 보다 많은 재원을 창출하려는 절대주의 국가의 의도와 밀접한 관계에 있다고 주장했다. 그럼에도 목재 위기는 ‘과학적 조림’을 통해 독일 숲의 가독성을 증대시켰으며, 독일인들을 ‘숲의 민족’으로 만드는 데 일조했다. 18세기 초 카를로비츠가 『산림경제』에서 제시한 지속가능성 개념은 독일 임학이 현대 환경주의에 남긴 유산이며, 19세기 초 작센과 프로이센이 각각 타란트와 에버스발데에 설립한 임학교는 독일 임업교육과 숲 연구의 산실이 되었다. 한편 경제의 지속가능성에서 환경의 지속가능성으로 발전한 ‘지속가능한 숲’ 개념은 나치의 인종주의 수사에 오용됨으로써 독일 현대사에 상흔을 남겼으며, 이는 숲의 역사를 정치사로 읽을 수 있는 이유이기도 하다. This article conducts a reflective study of the German experience gained in the silvicultural realm with the idea of the ‘sustainable forest.’ During the 1980s and the 1990s Joachim Radkau argued that lamentations in the forest instructions of the German territorial states regarding timber shortage should rather be interpreted as an instrument of absolutist authorities to regulate and constrain usage as well as a means to discipline their subjects. By contrasts, forest historians judged these lamentations to be an indication of actual shortcomings that existed before the advent of the industrialization. The complexity of the so-called timber crisis debate referred environmental historians to the most important heritage of the German forestry to the posterity: the notion of the sustainability which was first defined in Sylvicultura oeconomica, a book published in 1713 by Hans Carl von Carlowitz. The initial idea of the ‘sustainable use’ of timber transformed into the ‘sustainable ecosystem.’ Theories and practices of the scientific forestry, which were developed at the academies of forestry in Tharandt and Eberswalde, changed gradually the cultural landscape of Germany. In spite of its instrumentalization by the Nazis, the model of the sustainable forest was and is a central part of German identity and culture that has also become defining symbol of a sustainable future.