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Does Directors and Officers’ Liability Insurance Induce Bank Risk-taking? Evidence from Taiwan
Kuei-Fu Li,Yi-Ping Liao 한국증권학회 2017 Asia-Pacific Journal of Financial Studies Vol.46 No.1
This study investigates the effect of directors and officers’ (D&O) insurance on bank risk-taking. Using data from Taiwan banks, we find that: (i) the level of D&O insurance coverage is positively associated with risk-taking; and (ii) this positive relationship is less pronounced for banks whose insurers are highly credit-rated or specialists in the D&O insurance market. Overall, considering the severe consequences of greater bank risk-taking, our findings highlight the need for regulators to monitor the use of D&O insurance policies by banks.
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Fu-Jen Wang,Kuei-I Tsai,Yao-Jun Wang,Hao-Chuan Lee 대한기계학회 2011 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.25 No.2
Precise-manufacturing facilities, which emphasize accurate and stable machining of the working components to be used in semiconductor industry, cannot function properly without appropriate and precise cooling. HCFC (hydro-chloro-floro-carbon) has been commonly used as the coolant for precise manufacturing facilities; but it is facing the pressing schedule to be phased out. Additionally, the dramatic variation of heat load during high-accuracy and high-speed applications need a critical control of coolant (brine or water) temperature. Use of eco-friendly HFC 404A to replace HFC has been suggested as an effective alternative to alleviate the problems. In this study, the performance of a process cooling system retrofitted with HFC-404A refrigerant was evaluated; the energy efficiency ratio and accuracy of temperature control specific to -15℃ precise manufacturing application were examined. Effects of using thermostatic expansion valve associated with hot-gas by-pass control scheme under different loading conditions have been investigated extensively. The energy efficiency ratio and accuracy of temperature control for the cooling system were measured and analyzed for comparing and evaluating HCFC-22 and HFC-404A using different throttling devices under specific coolant temperatures. The comprehensive studies on improving the accuracy of temperature control and energy-saving efficiencies through different temperature control strategies are presented in this paper.
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Pricing and Hedging European Energy Derivatives: A Case Study of WTI Oil Options
Chih-Chen Hsu,Shih-Kuei Lin,Ting-Fu Chen 한국증권학회 2014 Asia-Pacific Journal of Financial Studies Vol.43 No.3
This study extends the mean-reversion dynamic framework of (Pilipovic, Energy risk: Valuingand managing energy derivatives, 1997) and (Schwartz, The stochastic behavior of commodityprices: Implications for pricing and hedging, Journal of Finance 52, 1997, 923) and focuses ondeveloping a variety of continuous-time commodity-pricing and hedging models by analyzingthe pricing and hedging errors found in an empirical investigation of options contracts onlight sweet crude oil traded on the New York Mercantile Exchange. Thus, this study contributesto furthering the applicability of the models developed. The inclusion of the benchmarkBlack-Scholes pricing model generates systematic biases that are consistent with (Bakshi, Caoand Chen, Handbook of Quantitative Finance and Risk Management, 2010). The mean-reversionjump-diffusion and seasonality option-pricing model best describes the extreme pricevolatility experienced during a financial collapse, but the mean-reversion and seasonalityoption-pricing model offers the best pricing and hedging capability for other periods. Theperformances of hedging models are generally consistent with pricing errors.
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A Novel Three-Phase Voltage-Doubler Soft-Switching Active Filter
Maoh-Chin Jiang,Jing-Jhu Jhan,Kuei Wu-Chang,Huang-Kai Fu 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
A novel three-phase voltage-doubler soft-switching active filter (VDSSAF) comprising four main switches and four auxiliary switches is proposed in this paper. All main switches in the proposed VBSSAF operate at zero-voltage-switching (ZVS) turn on, while the auxiliary switches operate at zero-current-switching (ZCS) turn off. The reduction in the number of switches can also increase the reliability, since the control circuits are thereby reduced to two sets. The proposed VBSSAF can compensate the current harmonics, improve the power factor and balance the unbalanced nonlinear load. Moreover, a critical value of the capacitor voltage magnitude on the DC side and a critical value of the reactor inductance on the AC side for successful harmonic current tracking are also derived for design applications. Some experimental results of the VBSSAF, rated 400 W and operated at 40 ㎑, are provided to demonstrate the performance.
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Magnetic Properties and Microscopic Structures of Ultrathin Co/p3 × p3 − R30˚-Ag/Si(111) Films
Jyh-Shen Tsay,Tsu-Yi Fu,Chih-Kuei Kao,Xiao-Lan Huang,Jyh-Ron Shue,Wei-Hsiang Chen,Yeong-Der Yao,구현주 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
Combined scanning tunneling microscopy and surface magneto-optic Kerr effect studies were employedto study the relation between magnetic properties and the microscopic interfacial structuresof ultrathin Co/p3×p3−R30˚-Ag/Si(111) films. On the top of p3×p3−R30˚-Ag/Si(111), pureCo clusters formed without disrupting the p3 × p3 − R30˚ structure of the Ag buffer layer. Thegreat strain due to the large mismatch between Co and the substrate influenced the nucleation ofCo atoms to form large clusters. No magnetic hysteresis in the polar configuration was observed forfilms thinner than 10 monolayers. The easy axis of magnetization was in the surface plane. Cappingp3 × p3 − R30˚-Ag on top of the Si(111) surface before the deposition of the Co overlayerscan efficiently reduce the nonferromagnetic Co-Si compound to zero thickness. For Co coveragebetween 2.9 and 4.2 monolayers, a lower Curie temperature was observed in ultrathin films. Due tothe existence of a smooth interface between Co and the p3 × p3 − R30˚-Ag buffer, the coercivityfor Co/p3 × p3 − R30˚-Ag/Si(111) is smaller than that for Co/Si(111).
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A Novel Single-Phase Soft-Switching Unipolar PWM Inverter
Maoh-Chin Jiang,Wei-Shiang Wang,Huang-Kai Fu,Kuei Wu-Chang 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
A novel single-phase soft-switching unipolar PWM inverter (SSUPI) using a simple auxiliary resonant unit is proposed. All main switches of high-frequency arm operate at zero-voltage-switching (ZVS) turn-on, while the auxiliary switches operate at zero-current-switching (ZCS) turn-off. All main switches of low-frequency arm operate at 60 ㎐ to greatly reduce switching losses. As a result, commutations of the main power devices occur with low losses. Consequently, higher efficiency is achieved. Moreover, a unipolar PWM scheme is used to reduce the output voltage harmonics. Some experimental results of the proposed SSUPI, rated 500 W and operated at 40 ㎑, are presented for demonstration.
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