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- 저자 : Taeyoung Doh (검색결과 4 건)
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Yield Curve in an Estimated Nonlinear Macro Model
Taeyoung Doh 한국계량경제학회 2008 한국계량경제학회 학술대회 논문집 Vol.2009 No.-
What moves the yield curve? This paper specifies and estimates a dynamic stochastic general equilibrium (DSGE) model solved using a second order approximation to equilibrium conditions to answer this question. From the empirical analysis of U.S. data from 1983:Q1 to 2007:Q4, I find that the monetary policy response to the inflation gap defined by the difference between expected inflation and the inflation target of the central bank is a key channel transmitting macro shocks to the yield curve and that the degree of nominal rigidity determines which macro shocks are more important determinants of the yield curve. With the low degree of nominal rigidity, the inflation target of the central bank drives persistent movements of inflation and the yield curve while fluctuations of markups do so with the high degree of nominal rigidity. Although the estimated linear model puts nearly zero probability on the low degree of nominal rigidity, there is a positive probability mass in the nonlinear model. The analysis in this paper suggests caution on interpreting estimation results in which nonlinear terms of the DSGE model solution are ignored.
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Analysis of Loan Guarantees among the Korean Chaebol Affiliates
Doh, Taeyoung,류근관 한국국제경제학회 2004 International Economic Journal Vol.18 No.2
This paper analyzes corporate loan guarantees among the Korean chaebol a±liates. Loan guarantees are found to be e±ciency-neutral under a set of ideal conditions characterized by perfect and symmetric information, no agency problem, and no governmental interference in private financial contracts. In reality, though, corporate loan guarantees have negative as well as positive eects. The negative eects of loan guarantees arise from the agency problem between the controlling minority shareholders and outside investors. Government’s implicit support to financial institutions worsens the problem. Without such distortions, a loan guarantee by the guarantor firm may signal the quality of the investment project of the borrowing firm, if the guarantor firm has more information than the lending bank with regards to the type of the borrowing firm’s investment project.
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Yield Curve in an Estimated Nonlinear Macro Model
도태영(Taeyoung Doh) 한국계량경제학회 2009 한국계량경제학회 학술대회 논문집 Vol.2009 No.2
What moves the yield curve? This paper specifies and estimates a dynamic stochastic general equilibrium (DSGE) model solved using a second order approximation to equilibrium conditions to answer this question. From the empirical analysis of U.S. data from 1983:Q1 to 2007:Q4, I find that the monetary policy response to the inflation gap defined by the difference between expected inflation and the inflation target of the central bank is a key channel transmitting macro shocks to the yield curve and that the degree of nominal rigidity determines which macro shocks are more important determinants of the yield curve. With the low degree of nominal rigidity, the inflation target of the central bank drives persistent movements of inflation and the yield curve while fluctuations of markups do so with the high degree of nominal rigidity. Although the estimated linear model puts nearly zero probability on the low degree of nominal rigidity, there is a positive probability mass in the nonlinear model. The analysis in this paper suggests caution on interpreting estimation results in which nonlinear terms of the DSGE model solution are ignored.
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Im, Sungjin,Park, Young Ran,Park, Sanghyuk,Kim, Hyeong Jin,Doh, Ji Hoon,Kwon, Kyungjung,Hong, Won G.,Kim, Byungnam,Yang, Woo Seok,Kim, TaeYoung,Hong, Young Joon Elsevier BV * North-Holland 2017 Applied Surface Science Vol.412 No.-
<P><B>Abstract</B></P> <P>This study demonstrates a method for improving supercapacitive performance of two-dimensional nanosheet-based composite electrode. As a hybridized electrostatic double layer capacitor–electrochemical pseudocapacitor (EDLC–PC) electrode, we synthesized reduced graphene oxide–polyaniline nanofibers (rGO–PANi NFs) composite electrode. For the enhanced supercapacitive performances, insulator silver chloride nanoparticles (AgCl NPs) were intercalated into the interlayer gap of rGO. The AgCl NP intercalation (i) exfoliated rGO layers and (ii) prevented rGO-self-agglomeration that makes it difficult to utilize the high surface-to-volume ratio of ideal mono- (or few-) atomic-thick rGO layers. As a result, (iii) the specific capacitance was improved in accordance with the enlarged specific surface area of rGO. Furthermore, (iv) the well-developed rGO edges, which were opened by the AgCl intercalation, enabled formation of more bonds between PANi and rGO by selective grafting of PANi to the rGO edges. Hence, the bonds of PANi–rGO, as conducting paths, substantially reduced the total electrical resistance. Enhanced specific capacitance, ion diffusion efficiency, and reduced electrical resistance indicated the bi-functional roles of AgCl NP insertion for high performance hybridized EDLC–PC electrodes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> High energy–power supercapacitor electrode is demonstrated using EDLC–PC hybridized rGO–PANi nanocomposite. </LI> <LI> A method for perpetuated intercalation of nanoparticles into interlayer gap of rGO is developed. </LI> <LI> The intercalaction (i) exfoliates rGO layers, (ii) prevents self-agglomeration, and (iii) enlarges specific surface area of rGO for high power performance. </LI> <LI> Electric resistance is substantially reduced by forming more rGO–PANi links via grafting of PANi to well-opened rGO edges. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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