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김선웅,박세진,성홍모 한국경영과학회 2002 한국경영과학회 학술대회논문집 Vol.- No.1(2)
본 연구에서는 자동차의 안락성에 큰 영향을 미치는 운전자세와 운전에 따른 피로도를 평가하는 방법에 대해 다루고자 한다. 이러한 피로도를 평가하니 위해서 EMG, ECG와 같은 생리신호를 이용한 정량적인 평가방법과 졸림감, 주관적 피로도 등과 같은 정성적인 평가방법을 동시에 수행하였다. 본 실험은 실제 차량에서 동일한 구간을(호남고속도로 대전-정읍)을 왕복 주행하면서 수행되었으며, 실험에 참여한 인원은 총 6명이었다. 실험 결과 운전시간이 증가함에 따라 근육의 피로가 증가하는 것을 볼 수 있었으며, 동시에 졸림감 또한 증가하였다. 운전 자세에 따른 피로도의 평가 결과 졸림감이 중요한 요인으로 나났는데, 이는 안락한 운전자세 뿐만 아니라 안전한 운전을 위해서도 아주 중요한 요인이라 생각된다. 본 연구는 실제 차량을 통한 피로도의 평가를 하는데 있어서 피로를 평가하는 방법에 대한 가이드로써 그 역할이 충분하리라 생각이 되며, 무엇보다도 실제 차량에서의 실험한 결과 샘플수가 적기 때문에 객관적인 결과라고 말하기엔 어렵겠지만, 운전 자세에 따라서 유의한 차이를 보였다.
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김선웅,박완신,윤현도,장영일,엄남용 한국구조물진단유지관리학회 2012 한국구조물진단학회 학술발표회논문집 Vol.2012 No.1
The objective of this study is to investigate the seismic performance of hybrid coupled shear wall connection with new toughness material, pseudo strain hardening cementitious composites (PSH2C). Test variable of this study is the embedment length of steel coupling in connection region. The results showed that Specimen PSH2C-ST with longer embedment length of steel coupling beam exhibits good seismic performance than Specimen PSH2C-STE.
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Shear strength investigation of connections between RC and strengthened steel frames
김선웅 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.5
A numerical analysis model should consider the indirect connection’s shear strength to evaluate buildings’ seismically strengthened eff ect by embedded and perimeter steel moment frames with the indirect connection. The seismic design code for the Korean school facilities does not support the particular indirect connection’s design information, recommends to secure through the experiment. This paper investigates the shear strength of bolted indirect connections of the steel retrofi t method per the experimental results. The bolted indirect connection for the embedded steel retrofi t method dissipated most indirect connection energy, excluding the connection steel plate and post-installed anchors as fl exural behavior. Regardless of the lack of concrete shear strength due to the post-installed anchors, it was not observed the cracks in the column. In contrast, the bolted indirect connection of the perimeter steel retrofi t method was confi rmed as the only vertical cracks due to the post-installed anchors in the column and the indirect connection. This indirect connection is that the post-installed anchors resisted the shear force as shear behavior. According to these experimental results, the shear-resistant capacity of bolted indirect connections of the embedded and perimeter steel retrofi t methods was proposed.
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은퇴 시점과 예측 변동성을 고려한 동적 Glide Path
김선웅 중소기업융합학회 2021 융합정보논문지 Vol.11 No.2
본 연구의 목적은 투자자의 은퇴 시점뿐만 아니라 시장의 예측 변동성을 동시에 고려하여 Target Date Fund의 위험자산 편입 비율을 동적으로 조정하는 새로운 Glide Path를 제안하고, 은퇴 시점만 고려하여 위험자산 편입 비율이 정해지는 전통적 Glide Path와 투자 성과를 비교 분석하는 것이다. 시장 변동성의 예측치로는 역사적 변동성, 시계열모형인 GARCH 변동성, 그리고 변동성지수인 VKOSPI를 활용하였으며, 2003년부터 2020년까지 의 분석 기간에서 변동성을 고려하는 새로운 동적 Glide Path의 투자 성과가 우수함을 보여주었다. 3가지 변동성 예측모형 모두에서 은퇴 시점만을 고려하는 Glide Path보다 수익률은 더 높고 위험은 더 낮아지면서 투자 성과 지표인 Sharpe Ratio가 개선되었다. 실증 분석 결과는 은퇴예정자뿐만 아니라 Target Date Fund 운용업계에 새로운 Glide Path의 활용 가능성을 제시하고 있다. The objective of this study is to propose a new Glide Path that dynamically adjusts the risky asset inclusion ratio of the Target Date Fund by simultaneously considering the market’s forecast volatility as well as the time of investor retirement, and to compare the investment performance with the traditional Target Date Fund. Forecasts of market volatility utilize historical volatility, time series model GARCH volatility, and the volatility index VKOSPI. The investment performance of the new dynamic Glide Path, which considers stock market volatility has been shown to be excellent during the analysis period from 2003 to 2020. In all three volatility prediction models, Sharpe Ratio, an investment performance indicator, is improved with higher returns and lower risks than traditional static Glide Path, which considers only retirement date. The empirical results of this study present the potential for the utilization of the suggested Glide Path in the Target Date Fund management industry as well as retirees.
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On the Dative Intervention Effect on Raising to Subject
김선웅 한국생성문법학회 2005 생성문법연구 Vol.15 No.4
This paper is an attempt to explain a seemingly complex cross linguistic effect of dative intervention with special reference to raising. Languages vary in allowing raising across a dative element in the same context. English and Spanish occupies the extremes in terms of the dative intervention effect on raising. English allows raising over a full NP, a pronoun, and an A'-trace, while Spanish does not allow such a raising at all. Some previous approaches turn out to be operative only on some set of data but to fail on the other. A solution is proposed in terms of the division of labor between Match and Agree. To be concrete, raising over a dative experiencer is allowed if the movement is done solely under Match; the same raising is not allowed if the movement is done under Match and Agree. Without Agree, there is no Dative Intervention Effect guaranteed by definition. With this division, various cross-linguistic data are explained in a simpler way. In addition, the suggestion gets support from the object honorification phenomena in Japanese and in Korean.
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김선웅 현대문법학회 2005 현대문법연구 Vol.39 No.-
This paper proposes a new explanation of the well-known that-t effect, based on the assumption that the head-head relation is a matter of PF rather than of syntax. After critical review of some Minimalist approaches (Roussou 2002, Roberts and Roussou 2001, Pesetsky and Torrego 2001, 2002), a PF-based solution is proposed in terms of a generalization on the lexical realization of heads. In particular, this paper argues that the first head that is compatible with agreement must lexically host the Agr-feature of T on a phase basis. This solution turns out to be applicable to various data regarding the that-t effects across languages.
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