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조기강도발현형 AE감수제를 사용한 콘크리트의 초기강도발현 및 내구특성
윤섭 ( Yoon¸ Sob ),황인성 ( Hwang¸ Yin Seong ),김규동 ( Kim¸ Gyu Dong ),이승훈 ( Lee¸ Seung Hoon ),한천구 ( Han¸ Cheon-goo ) 한국구조물진단유지관리공학회 2003 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.7 No.2
This study discuss early strength development and durability of concrete, which AE water reducing agent of early strength type is used, with the replacing method of fly ash and blast furnace slag powder. According to the results, setting time is shortened in comparison with normal AE water reducing agent, compressive strength gains 5MPa before 16 hours, and as for the replacing method of mineral admixture, it shows higher value in order of replacement for fine aggregate, combination and replacement for cement. The rebound value of P type schmidt hammer shows a similar tendency to compressive strength. The rebound value, which compressive strength is more than 5MPa, shows 18, so it is thought that the use of P type schmidt hammer enables quality control related to estimation of compressive strength. AE water reducing agent of early strength type does not differ from normal AE water reducing agent in terms of durability such as length change ratio and neutralization, so there is no quality variation related to durability. As for replacement of mineral admixture, length change ratio and neutralization decreases in order of fine aggregate, combination and replacement for cement.
( Hyon Sob Han ),( Bo Hye Nam ),( Jung Ha Kang ),( Yi Kyoung Kim ),( Young Ju Jee ),( Young Baek Hur ),( Moon Geun Yoon ) 한국수산과학회(구 한국수산학회) 2012 Fisheries and Aquatic Sciences Vol.15 No.2
We used nine microsatellite DNA markers to estimate genetic variation among wild and cultured populations of the sea squirt Halocynthia roretzi. The loci were polymorphic, with 6-32 alleles, and allelic richness ranged from 6.0 to 26.1 in each population. The wild and the cultured populations had similar mean heterozygosities (HO and HE), allele numbers, and allelic richness. One cultured population with softness syndrome had a lower mean in the observed heterozygosity (HO = 0.57) and higher mean inbreeding coefficient (FIS = 0.261) than any other populations. This suggests that the loss of genetic variation in the diseased population might be due to increased inbreeding. A neighbor-joining tree and pairwise population estimates of FST showed moderate genetic differentiation between the wild and the cultured populations. Additionally, the softness syndrome population was genetically divergent from wild populations, but it was genetically close to the cultured populations.
Cross-Current Contribution : A Study on East Asian Influence on Modern Architecture in Europe
Hyon-Sob Kim 대한건축학회 2009 Architectural research Vol.11 No.2
This research started from the premise that East Asia ? China, Korea and Japan ? played a remarkable role in the development of modern architecture. In this study, attention is paid to the lack of a synthetic research about the influence of East Asia on European modernism as a counterpart to its influence on American modernism. Thus, the intention of this paper is to construct an integrated discourse on the East Asian contribution to European modern architecture. By analyzing recently published/presented articles on the related subjects, this study suggests how European modernists encountered the East, what attracted them to the East, and how they applied East Asian aesthetics in their designs. While a number of architects adopted East Asian formal elements directly, at times superficially, others extracted the underlying principles. As a whole, this analysis offers insights at several levels. First, it provides a balance to the view of the East Asian influence on modern architecture by providing an investigation into its influence on European modernism as a counterpart to its influence on American modernism. Second, the multi-faceted nature of modern architecture is further illuminated in this study. Third, an important example of “positive-Orientalism” is provided, which contrasts with the rather negative image implied by E. Said’s ‘Orientalism’. In conclusion, this paper provides a critical assessment of the fundamental motive of European modernists’ adoption of East Asian aesthetics.
( Hyon Sob Han ),( Nobuhiko Taniguchi ),( Jong Ha Lee ),( Moon Geun Yoon ) 한국수산과학회(구 한국수산학회) 2011 Fisheries and Aquatic Sciences Vol.14 No.4
We investigated the genetic structure of Korean and Japanese ayu Plecoglossus altivelis populations by examining 669 individuals from 14 populations using three microsatellite loci. Genetic variation did not differ significantly among the populations examined in terms of allelic number and heterozygosity. Korean populations were genetically close to each other, implying that persistent gene flow has occurred in these populations. This suggests that eastern populations in Korea form a single large population and all of the Korean populations are distinct from the Japanese populations. Pairwise population FST estimates, principal component analyses, and a neighbor-joining tree showed that genetic separation between the southern and pooled eastern coast populations was probably influenced by restricted gene flow. Hierarchical analysis of molecular variance (AMOVA) revealed a weak but significant genetic structure among three ayu groups (eastern and southern coasts of Korea and the Japan coast), and no genetic variation within groups. The estimated genetic population structure and potential applications of microsatellite markers may aid in the proper management of ayu populations.
The Politics of Troop-Dispatch: Why Did the Europeans Send Their Boys to Korea?
( Myong Sob Kim ) 한국국방연구원 2004 The Korean Journal of Defense Analysis Vol.16 No.2
Often overshadowed by the U.S. involvement in the Korean War (1950-53), a sizable number of European countries had also contributed their combat troops to the UN efforts to defend South Korea against the Communist North. The decisions were not easy for these European governments, which had to overcome steep domestic opposition before the dispatch. This paper analyzes the reasons and strategic considerations for European involvement in the Korean War and demonstrates that the decisions were made for the following reasons: First, the European decisions were made pursuant to the UN resolutions of June 27 and July 7, 1950, which recommended international assistance to South Korea. Second, Europeans misunderstood the nature of the War-that is to say in their perception, the troops were sent to fight Stalin`s war rather than that of Kim Il Sung`s. Third, Western Europeans wanted to ride alongside the United States, while hoping that they would be able to secure some influence on U.S. foreign policy as junior partners in the new Cold War international order (a tail-wag-the-dog strategy). The UK decision, in particular, was made in view of the special relationship with the United States. Fourth, some European colonial powers, such as the UK, France and the Netherlands, took into consideration their colonial interests in East Asia, which might be threatened by the communist expansion in the region. Fifth, some east Mediterranean countries, such as Greece and Turkey, were motivated by their desire to join the West through NATO membership.