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A Regional Mechanism for Joint Monitoring of East Asian Sovereign Debts
Xin Hua 경희대학교 인류사회재건연구원 2012 OUGHTOPIA Vol.27 No.1
유럽 주권채무 위기의 혼란상태와 비하면 현재 동아시아 국가의 주권채무는 상대적으로 적절한 선에서 잘 관리되고 있으며 그 운행도 평온하다. 그러나 동아시아 각국 경제의 내재적인 취약성을 고려할 때 동아시아 주권채무의 문제는 의연히 불안정과 불가 예측적인 잠재적 위험을 내포하고 있다. 유럽이 주권채무 위기를 만회하기위해 만든 구원의 틀은 그 조직기반이 반세기 남짓한 동안 형성해온 유럽지역 통합 메카니즘이다. 따라서 동아시아 지역 통합 메카니즘도 동아시아국가의 주권채무 문제를 해결하기 위해 제도적 자원을 제공할 수 있을 것이다. 동아시아 통합의 주요 구성요인인 AFTA, APTA, APEC과 TPP를 기반으로 하는 동아시아 무역 통합 메카니즘은 치앙마이 이니셔티브와 아시아의 채권시장을 기반으로 하는 동아시아 금융통합 메카니즘 및 동아시아 정상회의를 상징으로 하는 동아시아의 정치통합 진행과정 등이 동아시아의 주권채무를 관리 할 수 있는 지역연합조직과 제도적인 메키니즘이라 될 수 있을 것이다. East Asian sovereign debts are being managed smoothly now, in contrast to the chaos of European sovereign debt crisis. Nevertheless, they still contain some uncertainty and unpredictability if the inherent fragility of East Asian economies is put into consideration. Just as current bailout frameworks of European sovereign debt crisis demonstrate, the institutional arrangements of regional integration shall be cherished as the major structure within which any viable approaches can be implemented for tackling potential troubles of East Asian sovereign debts. Currently, the already existing frameworks of the three major tracks of East Asia regional integration, such as the AFTA, APTA, APEC, & TPP in its trade integration, the Chiang Mai Initiative & Asia Bond Market Initiative in its Monetary Integration, and the East Asia Summit in its political integration, can be operated as the basis and starting point from which more blueprints will be made and implemented so as to create a complex of institutional architecture to effectively handle any harsh issues related to East Asian sovereign debts.
Hua-xin Liu,Jian-Wei Yang,Xue-zhi Wang,Ding-Jie Han 대한토목학회 2017 KSCE Journal of Civil Engineering Vol.21 No.6
This paper describes an experimental investigation to evaluate the shear performance of basalt Fiber-reinforced Polymer (BFRP)- reinforced recycled aggregate concrete deep beams without stirrups. A total of 13 beams were tested under four-point loading until failure: nine were reinforced with BFRP bars, and four were reinforced with steel bars. The parameters of this experiment included the shear-span-to-depth ratio (a/d), reinforcement ratio of the longitudinal bar (ρ), sectional effective depth (d) and compressive strength of the recycled concrete ( ). The shear behavior of the beams was described in terms of the crack type, failure mode, shear strength and load-deformation relationship. The effects of the experimental variables on shear capacities and deflections of the tested beams were also investigated. The experimental results showed that the shear capacity of BFRP-reinforced beams was smaller than that of steel-reinforced beams. Additionally, the deformation of BFRP-reinforced beams was larger than that of steel-reinforced ones. The shear capacity of BFRP-reinforced recycled concrete beams without stirrups showed a linear relationship with the sectional effective depth d and was proportional to (d/a)4/3, (ρ)1/5 and ( )1/3. Meanwhile, four existing codes were used to predict the shear strength of test beams and the CSA806-02 gave the better results.
Identification and Mapping of a Thermo-Sensitive Genic Self-Incompatibility Gene in Maize
Xin Ge Lin,Hui Ling Xie,Zhang Ying Xi,Yan Min Hu,Guang Yuan Zhao,Liu Jing Duan,Zong You Hao,Zong Hua Liu,Ji Hua Tang 한국유전학회 2009 Genes & Genomics Vol.31 No.3
In this study, we describe a novel ecological self-incompatibility (SI) line HE97 in maize. The main environmental factors influencing the inbred line characteristics were identified through field sowing trials during a two-year study period (2001 and 2002). The results showed that daily minimum temperature had the greatest effect on floral morphology and breeding system of the SI line. In staminate floret differentiation, when the daily minimum temperature exceeded 24℃, the line exhibited complete self-compatibility; however SI was observed when the daily minimum temperature was below 20℃. Therefore, we characterized the line as exhibiting thermo-sensitive genic self-incompatibility (TGSI). A set of F2 and F2:3 populations, derived from the inbred lines HE97 and Z58, were evaluated for two years to elucidate the TGSI line patterns of inheritance. Classical genetic analyses and QTL mapping results revealed that HE97 self-incompatibility was governed by a single allele, named here as tgsi1. The tgsi1 gene was mapped to chromosome 2 between SSR markers nc131 and bnlg1633, with a distance of 2.40 cM from nc131 and 2.44 cM from bnlg1633.
Synthesis and Properties of Cationic Polyurethane Dispersions
Hua Xin,Feng-bo Ma,Xing Zhao 한국고분자학회 2016 폴리머 Vol.40 No.6
A series of water dispersible polyurethanes containing quaternary ammonium group as the hydrophilic group with different content of trimethylolpropane (TMP) as inner crosslinker were prepared. IR spectroscopy was adopted to demonstrate the polymerization reaction and structure of polymer. The effects of TMP content on PU properties were investigated. Particle size distribution (PSD) analysis and morphology of PU observed by TEM showed that particle size of PU dispersions initially decreased and then increased with increasing TMP content. The viscosity of the PU dispersions with TMP addition was bigger than the PU dispersions without TMP. TG analysis indicated thermal stability and microphase separation degree of PU was enhanced with increasing TMP content. Contact angle and gel content of PU also increased as increasing TMP content. Meanwhile, tensile strength increased and then decreased with the increment of TMP content.