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Hedging Performance and Stock Market Liquidity: Evidence from the Taiwan Futures Market
Hsiu-Chuan Lee,Cheng-Yi Chien 한국증권학회 2010 Asia-Pacific Journal of Financial Studies Vol.39 No.3
This paper examines the impact of stock market liquidity on the hedging performance of stock index futures, and extends the conditional OLS model described by Miffre [Journal of Futures Markets 24 (2004) 945] by including stock market liquidity in the regression model. The empirical results indicate that information regarding stock market liquidity is useful in predicting the optimal hedge ratio under different market conditions. In a bear market, the conditional OLS model with stock market liquidity provides the best hedging performance for the out-of-sample period. Although the OLS model outperforms the generalized autoregressive conditional heteroskedasticity and conditional OLS models for the out-of-sample period in a bull market, the conditional OLS model with stock market liquidity outperforms the conditional OLS model without stock market liquidity in terms of downside risks (lower partial moment).
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An integrate information technology model during earthquake dynamics
Chen-Yuan Chen,Ying-Hsiu Chen,Shang-En Yu,Yi-Wen Chen,Chien-Chung Li 국제구조공학회 2012 Structural Engineering and Mechanics, An Int'l Jou Vol.44 No.5
Applying Information Technology (IT) in practical engineering has become one of the most important issues in the past few decades, especially on internal solitary wave, intelligent robot interaction, artificial intelligence, fuzzy Lyapunov, tension leg platform (TLP), consumer and service quality. Other than affecting the traditional teaching mode or increasing the inter-relation with users, IT can also be connected with the current society by collecting the latest information from the internet. It is apparently a fashion-catching-up technology. Therefore, the learning of how to use IT facilities is becoming one of engineers’ skills nowadays. In addition to studying how well engineers learn to operate IT facilities and apply them into teaching, how engineers’ general capacity of information effects the results of learning IT are also discussed. This research introduces the “Combined TAM and TPB mode,” to understand the situation of engineers using IT facilities.
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A structural health monitoring system based on multifractal detrended cross-correlation analysis
Tzu-Kang Lin,Yi-Hsiu Chien 국제구조공학회 2017 Structural Engineering and Mechanics, An Int'l Jou Vol.63 No.6
In recent years, multifractal-based analysis methods have been widely applied in engineering. Among these methods, multifractal detrended cross-correlation analysis (MFDXA), a branch of fractal analysis, has been successfully applied in the fields of finance and biomedicine. For its great potential in reflecting the subtle characteristic among signals, a structural health monitoring (SHM) system based on MFDXA is proposed. In this system, damage assessment is conducted by exploiting the concept of multifractal theory to quantify the complexity of the vibration signal measured from a structure. According to the proposed algorithm, the damage condition is first distinguished by multifractal detrended fluctuation analysis. Subsequently, the relationship between the q-order, q-order detrended covariance, and length of segment is further explored. The dissimilarity between damaged and undamaged cases is visualized on contour diagrams, and the damage location can thus be detected using signals measured from different floors. Moreover, a damage index is proposed to efficiently enhance the SHM process. A sevenstory benchmark structure, located at the National Center for Research on Earthquake Engineering (NCREE) , was employed for an experimental verification to demonstrate the performance of the proposed SHM algorithm. According to the results, the damage condition and orientation could be correctly identified using the MFDXA algorithm and the proposed damage index. Since only the ambient vibration signal is required along with a set of initial reference measurements, the proposed SHM system can provide a lower cost, efficient, and reliable monitoring process.
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Po-Cheng Hsieh,Yi-Chun Chen,Nai-Ci Zheng,Dave Mangindaan,Hsiu-Wen Chien 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-
The present study explores the remarkable photothermal properties and potential applications exhibitedby melanoidin-enriched spent coffee grounds (SCGs). However, the inherent challenge lies in the substantialparticle size of SCGs, leading to rapid sedimentation within the medium and resulting in unevenheat distribution during photothermal analysis. To overcome this obstacle, acid hydrolysis was employedto liquefy the SCGs, allowing their dispersion in water and significantly enhancing their light absorptioncapacity. The photothermal properties of liquefied SCGs (LSCGs) were analyzed under 808-nm nearinfrared(NIR) irradiation and compared with those of SCGs. Remarkably, the photothermal conversionefficiency of the LSCGs was as high as 52%, twice that of SCGs. To further explore their potential, theLSCGs were incorporated into chitosan (CS) to create homogenous and porous CS/LSCGs composites. These low-cost and environmentally friendly CS/LSCGs composites, made entirely from waste materials,demonstrated photothermal properties under NIR irradiation. Notably, they exhibited excellent performancein multiple cycles of water evaporation experiments, achieving an impressive water evaporationefficiency of nearly 90%.
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An integrate information technology model during earthquake dynamics
Chen, Chen-Yuan,Chen, Ying-Hsiu,Yu, Shang-En,Chen, Yi-Wen,Li, Chien-Chung Techno-Press 2012 Structural Engineering and Mechanics, An Int'l Jou Vol.44 No.5
Applying Information Technology (IT) in practical engineering has become one of the most important issues in the past few decades, especially on internal solitary wave, intelligent robot interaction, artificial intelligence, fuzzy Lyapunov, tension leg platform (TLP), consumer and service quality. Other than affecting the traditional teaching mode or increasing the inter-relation with users, IT can also be connected with the current society by collecting the latest information from the internet. It is apparently a fashion-catching-up technology. Therefore, the learning of how to use IT facilities is becoming one of engineers' skills nowadays. In addition to studying how well engineers learn to operate IT facilities and apply them into teaching, how engineers' general capacity of information effects the results of learning IT are also discussed. This research introduces the "Combined TAM and TPB mode," to understand the situation of engineers using IT facilities.
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