27 results on '"H. K. Wang"'
Search Results
2. Permanent deformation behaviour of pavement base and subbase containing recycle concrete aggregate, coarse and fine crumb rubber
- Author
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Mohammad Saberian, Jie Li, Bao Nguyen, and George H. K. Wang
- Subjects
Materials science ,Aggregate (composite) ,Rut ,0211 other engineering and technologies ,Base (geometry) ,02 engineering and technology ,Building and Construction ,Deformation (meteorology) ,Subbase (pavement) ,Cracking ,Natural rubber ,visual_art ,021105 building & construction ,visual_art.visual_art_medium ,General Materials Science ,Crumb rubber ,Geotechnical engineering ,021101 geological & geomatics engineering ,Civil and Structural Engineering - Abstract
Pavement layers must be sufficiently strong to carry all traffic loads and resist the accumulation of permanent deformations such as rutting and avoid premature failures including top-down cracking during their service lives. In recent years, the utilization of recycled construction and demolition (C&D) materials in civil and transportation infrastructure construction has been considered as a significant solution to replace conventional and natural aggregates, therefore to achieve the goal of building low-carbon footprint constructed facilities. Unfortunately, limited data have yet reported on the permanent deformation behaviour of the recycled materials in pavement, especially the effect of crumb rubber and rubber size with C&D aggregates on the permanent deformation behaviour in base and subbase layers. This paper provides unique laboratory information and testing results in this regard. In this study, two different groups of crumb rubber particles with sizes ranged from 400 to 600 µm (fine) and 15–20 mm (coarse) were separately added to 20 mm recycled concrete aggregate (RCA) and 20 mm crushed rock (CR) at 0.5, 1 and 2% by weight of the aggregates to study the effects of crumb rubber and rubber size on permanent deformation behaviour of RCA and CR aggregates. In particular, the permanent deformation behaviour of the RCA/CR with crumb rubber was investigated through the repeated load triaxial tests. It was observed that the CR samples should be avoided for use in base and subbase courses.
- Published
- 2018
- Full Text
- View/download PDF
3. An empirical analysis of algorithmic trading around earnings announcements
- Author
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George H. K. Wang, P. Joakim Westerholm, Alex Frino, Hui Zheng, and Tina Prodromou
- Subjects
040101 forestry ,Economics and Econometrics ,050208 finance ,Earnings ,Financial economics ,05 social sciences ,Market efficiency ,04 agricultural and veterinary sciences ,Monetary economics ,computer.software_genre ,0502 economics and business ,Economics ,0401 agriculture, forestry, and fisheries ,Algorithmic trading ,computer ,Finance - Abstract
This study examines the impact of corporate earnings announcements on trading activity and speed of price adjustment, analyzing algorithmic and non-algorithmic trades during the immediate period pre- and post-corporate earnings announcements. We confirm that algorithms react faster and more correctly to announcements than non-algorithmic traders. During the initial surge in trading activity in the first 90 s after the announcement, algorithms time their trades better than non-algorithmic traders, hence algorithms tend to be profitable, while non-algorithmic traders make losing trades over the same time period. During the pre-announcement period, non-algorithmic volume imbalance leads algorithmic volume imbalance, however, in the post announcement period, the direction of the lead–lag association is exactly reversed. Our results suggest that as algorithms are the fastest traders, their trading accelerates the information incorporation process.
- Published
- 2017
- Full Text
- View/download PDF
4. Securities Transaction Taxes and Market Quality of Equity and Futures Markets: Issues and Evidence
- Author
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George H. K. Wang
- Subjects
Tax revenue ,Hardware_MEMORYSTRUCTURES ,Securities Transaction Tax ,Equity (finance) ,Economics ,Revenue ,Monetary economics ,Volatility (finance) ,Empirical evidence ,Database transaction ,Futures contract - Abstract
This paper discusses arguments for and against a securities transaction tax (STT) and evaluates the pros and cons based on a review of empirical evidence concerning the impact of STTs on equity and futures markets (i.e., trading volume, bid-ask spreads, and price volatility) and market efficiency in various countries. I find that an STT would likely reduce trading volume and increase trading cost, but may not reduce price volatility. The size of potential STT revenue depends on the STT's impact on market activity. A sizable STT on futures and equity markets would not only fail to generate the expected tax revenue, it would also likely hurt the international competitiveness of US equity and futures markets.
- Published
- 2018
- Full Text
- View/download PDF
5. Inventory announcements, jump dynamics, volatility and trading volume in U.S. energy futures markets
- Author
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James E. Gentle, Johan Bjursell, and George H. K. Wang
- Subjects
Economics and Econometrics ,Heating oil ,General Energy ,Financial economics ,Economics ,Jump ,Econometrics ,Energy information ,Sample path ,Volatility (finance) ,Crude oil ,Futures contract - Abstract
This paper applies nonparametric methods to identify jumps in daily futures prices and intraday jumps surrounding inventory announcements of crude oil, heating oil and natural gas contracts traded on the New York Mercantile Exchange. The sample period of our intraday data covers January 1990 to January 2008. We have obtained several interesting empirical results. (1) Large volatility days are often associated with large jump components, and large jump components are often associated with the Energy Information Administration's inventory announcement dates. (2) The volatility jump component is less persistent than the continuous sample path component. (3) Volatility and trading volume are higher on days with a jump at the inventory announcement than on days without a jump at the announcement. Furthermore, the intraday volatility returns to normal faster following inventory announcements with jumps than after announcements without jumps.
- Published
- 2015
- Full Text
- View/download PDF
6. Real world data of how next-generation sequencing changes treatment strategy and identify hereditary diseases in urology cancers
- Author
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D.W. Ye, H-K. Wang, and Z. Yao
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business.industry ,Urology ,Hereditary Diseases ,Treatment strategy ,Medicine ,Computational biology ,business ,Real world data ,DNA sequencing - Published
- 2019
- Full Text
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7. Funding liquidity and equity liquidity in the subprime crisis period: Evidence from the ETF market
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Junmao Chiu, Keng-Yu Ho, Huimin Chung, and George H. K. Wang
- Subjects
Economics and Econometrics ,Market depth ,Funding liquidity ,Economics ,Liquidity crisis ,Financial system ,Market impact ,Accounting liquidity ,Liquidity risk ,Finance ,Liquidity premium ,Market liquidity - Abstract
Using index and financial exchange-traded funds (ETFs), this study explores the relation between funding liquidity and equity liquidity during the subprime crisis period. Our empirical results show that a higher degree of funding illiquidity leads to an increase in bid–ask spread and a reduction in both market depth and net buying imbalance. Such findings indicate that an increase in funding liquidity can improve equity liquidity, with a stronger effect for the financial ETFs than for the index ETFs. Our study provides a better overall understanding of the effect of the liquidity–supplier funding constraint during the subprime crisis period.
- Published
- 2012
- Full Text
- View/download PDF
8. Diagnostics
- Author
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T. R. Einert, G. Schmidt, G. Binnig, O. Balacescu, L. Balacescu, M. Rus, R. Buiga, O. Tudoran, N. Todor, V. Nagy, A. Irimie, I. Neagoe, R. Yacobi, E. Ustaev, R. R. Berger, I. Barshack, K. Kaur, S. Henderson, A. Cutts, E. Domingo, J. Woods, C. Motley, B. Dougherty, M. Middleton, B. Hassan, Y. Wang, E. Beasley, M. Naley, A. Schuh, I. Tomlinson, J. Taylor, D. Planchard, B. Lueza, A. Rahal, L. Lacroix, M. Ngocamus, N. Auger, P. Saulnier, P. Dorfmuller, T. Le Chevalier, A. Celebic, J. P. Pignon, J. C. Soria, B. Besse, Y. H. Sun, R. Wang, C. G. Li, Y. J. Pan, H. Q. Chen, L. Chouchane, J. Shan, D. Kizhakayil, I. Aigha, S. Dsouza, B. Noureddine, S. Gabbouj, R. Mathew, E. Hassen, S. Shan, K. al-Rumaihi, I. al-Bozom, S. al-Said, D. Rabah, K. Farhat, I. A. Jakobsen Falk, K. H. Z. Green, K. Lotfi, A. Fyrberg, T. Pejovic, H. Li, P. Mhawech-Fauceglia, M. Hoatlin, M. G. Guo, M. Huang, Y. Ge, K. Hess, C. Wei, W. Zhang, T. A. Bogush, E. A. Dudko, M. V. Nureev, A. A. Kamensky, B. E. Polotsky, S. A. Tjulandin, M. I. Davydov, M. Caballero, J. Hasmats, H. Green, M. Quanz, C. Buhler, J. S. Sun, M. Dutreix, C. L. Cebotaru, A. N. Placintar, N. Ghilezan, Z. B. Balogh, L. Reiniger, H. Rajnai, J. Csomor, A. Szepesi, A. Balogh, L. Deak, E. Gagyi, C. Bodor, A. Matolcsy, V. K. Bozhenko, N. I. Rozhkova, E. A. Kudinova, O. P. Bliznyukov, E. N. Vaskevich, I. D. Trotsenko, N. V. Kharchenko, I. V. Kiandarian, C. Pulito, I. Terrenato, A. Sacconi, F. Biagioni, M. Mottolese, G. Blandino, P. Muti, E. Falvo, S. Strano, F. Mori, F. Ganci, R. Covello, C. Zoccali, R. Biagini, G. A. Palmer, W. Wegdam, D. Meijer, G. Kramer, J. Langridge, P. D. Moerland, S. M. de Jong, J. P. Vissers, G. G. Kenter, M. R. Buist, J. M. F. G. Aerts, M. Milione, F. de Braud, R. Buzzoni, S. Pusceddu, V. Mazzaferro, A. Damato, G. Pelosi, M. Garassino, M. Broggini, M. Marabese, S. Veronese, M. Ganzinelli, O. Martelli, N. Bossel, G. Fontemaggi, V. Manciocco, I. Sperduti, L. Strigari, G. Spriano, E. Domany, S. Donzelli, T. Bellissimo, G. Alessandrini, M. A. Carosi, E. Pescarmona, F. Facciolo, S. Telera, A. Pompili, V. de Vriendt, W. de Roock, A. F. di Narzo, S. Tian, B. Biesmans, B. Jacobs, J. de Schutter, E. Budzinska, X. Sagaert, M. Delorenzi, I. Simon, S. Tejpar, Y. Zhu, H. K. Wang, D. W. Ye, E. Denisov, M. Tsyganov, L. Tashireva, M. Zavyalova, V. Perelmuter, N. Cherdyntseva, Y. C. Kim, T. Jang, I. J. Oh, K. S. Kim, H. Ban, K. J. Na, S. J. Ahn, H. Kang, W. J. Kim, C. Park, N. K. Abousamra, M. S. El-Din, and E. A. Azmy
- Subjects
Oncology ,Hematology - Published
- 2012
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9. The impacts of large trades by trader types on intraday futures prices: Evidence from the Taiwan Futures Exchange
- Author
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Yun-Yi Wang, George H. K. Wang, Robin K. Chou, and Johan Bjursell
- Subjects
Economics and Econometrics ,Economics ,Sample (statistics) ,Monetary economics ,Total price ,Futures contract ,Finance ,Market liquidity - Abstract
This paper employs a unique data set to investigate the total price, liquidity and information effects of large institutional trades versus individual trades on three futures contracts traded on the Taiwan Futures Exchange. Several interesting results are obtained. We find that, for the entire sample period, most buyer-initiated large trades have larger permanent price effects than seller-initiated large trades and vice versa for liquidity effects. However, we find that the permanent price effects of large sells are larger than the effects of large purchases in bearish markets and the reverse pattern is found for bullish markets. These results are consistent with the current economic condition hypothesis which is used to explain the asymmetry between total price impacts, information and liquidity effects of large buys and sells. Our new empirical results demonstrate that the asymmetric patterns between price impacts of large buys and sells hold for individual traders as well as for institutional traders.
- Published
- 2011
- Full Text
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10. Determination of the expansion force of coarse steel slag aggregate
- Author
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George H. K. Wang
- Subjects
Materials science ,Aggregate (composite) ,Tension (physics) ,Metallurgy ,Slag ,Building and Construction ,Matrix (geology) ,Stress (mechanics) ,visual_art ,Autoclave (industrial) ,visual_art.visual_art_medium ,Particle ,General Materials Science ,Composite material ,Cement mortar ,Civil and Structural Engineering - Abstract
Expansion force and autoclave disruption tests have been developed for measuring the expansion force generated by coarse steel slag aggregate. Equations are deduced to convert the measured expansion force to expansion force of unit volume slag and an individual slag particle. The tension stresses of steel slag particles, 0.64–1.28 MPa, are used to quantitatively evaluate the stability of steel slag and related to the tensile stress of cement mortar matrix. Based on the results and modeling, the inherent relationship between the expansion force of steel slag and the allowable stress of a rigid matrix is revealed. Usability criterion for the use of steel slag under confined conditions can be further developed.
- Published
- 2010
- Full Text
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11. DNA repair pathway genes were altered during TKI resistance in metastatic renal cell carcinoma
- Author
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H.-K. Wang, H. Zhang, and D. Ye
- Subjects
business.industry ,Renal cell carcinoma ,Urology ,Tki resistance ,Cancer research ,Medicine ,DNA Repair Pathway ,business ,medicine.disease ,Gene - Published
- 2018
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- View/download PDF
12. PD-L1 expression is associated with tumor progression and poor prognosis in Xp11.2 translocation renal cell carcinoma
- Author
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Z. Yiping, Y.-Y. Qu, K. Chang, W.-J. Xaio, H.-K. Wang, H.-L. Zhang, and D.-W. Ye
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Poor prognosis ,business.industry ,Renal cell carcinoma ,Tumor progression ,Urology ,Cancer research ,Medicine ,Pd l1 expression ,business ,medicine.disease ,Xp11 2 translocation - Published
- 2018
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13. Investor Sentiment and Price Discovery: Evidence from the Pricing Dynamics between the Futures and Spot Markets
- Author
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Chu-Bin Lin, George H. K. Wang, and Robin K. Chou
- Subjects
Economics and Econometrics ,050208 finance ,Leverage (finance) ,Financial economics ,05 social sciences ,Futures market ,Monetary economics ,Behavioral economics ,Price discovery ,0502 economics and business ,Economics ,Arbitrage ,Business ,050207 economics ,Volatility (finance) ,Empirical evidence ,Futures contract ,Limits to arbitrage ,Finance - Abstract
This study shows that investor sentiment plays an important role in affecting the pricing dynamics between the spot and futures markets. The empirical evidence suggests that investor sentiment has a positive impact on price volatility and the bid-ask spread on both the spot and futures markets, which induces higher arbitrage risk and trading costs during high sentiment periods. As a consequence, during high sentiment periods, informed traders become less willing to leverage their information advantages on the futures market, which diminishes the futures markets’ leading informational role and contributions to price discovery. Our findings provide support for the theory of limits to arbitrage.
- Published
- 2015
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14. The Effects of Margin Changes on the Composition of Traders and Market Liquidity: Evidence from the Taiwan Futures Exchange
- Author
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Yun-Yi Wang, George H. K. Wang, and Robin K. Chou
- Subjects
Open outcry ,Financial economics ,Economics ,Pairs trade ,Flash trading ,High-frequency trading ,Algorithmic trading ,computer.software_genre ,Futures contract ,computer ,Foreign exchange market ,Market liquidity - Abstract
We examine the effects of margin changes on futures trading activity, the composition of traders and market liquidity, using an account level data set from the Taiwan Futures Exchange. We find that margin increases reduce trading activity for all trader types, which is consistent with the hypothesis that higher margins increase the costs of trading. Institutional traders are more sensitive to changes in margin requirements than individual traders, because their trading activity decreases significantly more than that of individual traders. This in turn leads to increases in market price volatility and decreases in market liquidity. These results imply that margin requirement is not an effective policy tool in limiting the trading activity of noise speculators to reduce market volatility.
- Published
- 2014
- Full Text
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15. Order Aggressiveness Strategies by Trader Types in a Limit Order Market: Evidence from Taiwan Index Futures
- Author
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Junmao Chiu, George H. K. Wang, and Huimin Chung
- Subjects
Index (economics) ,Order (exchange) ,Financial economics ,Significant difference ,Futures market ,Business ,Ordered logit ,Futures contract ,Limit order market ,Market liquidity - Abstract
This study explores the determinants of order aggressiveness by different trader types in the Taiwan index futures market. Using a unique data set that identifies order aggressiveness by trader types, we consider order choice from full limit order book and find several interesting results. Both top and rest-of-the-order-book activities affect traders’ order submission decisions. We find the crowded-out effect for institutional traders. Institutional traders provide liquidity and individual traders consume liquidity when own-side liquidity is sparse. There are significance differences by the different trader types in the timing of submitting aggressiveness of orders and order sizes over the intraday time period. We find significant difference submission strategies by trader types in the response to change in different market conditions.
- Published
- 2013
- Full Text
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16. Are Algorithmic Trades Informed? An Empirical Analysis of Algorithmic Trading around Earnings Announcements
- Author
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Alex Frino, Tina Viljoen, George H. K. Wang, Hui Zheng, and P. Joakim Westerholm
- Subjects
Earnings ,Financial economics ,Business ,Algorithmic trading ,computer.software_genre ,computer - Abstract
This study examines the impact of corporate earnings announcements on trading activity and speed of price adjustment, analyzing algorithmic and non–algorithmic trades during the immediate period pre– and post– corporate earnings announcements. We confirm that algorithms react faster and more correctly to announcements than non–algorithmic traders. During the initial surge in trading activity in the first 90 seconds after the announcement, algorithms time their trades better than non–algorithmic traders, hence algorithms tend to be profitable, while non–algorithmic traders make losing trades over the same time period. During the pre announcement period, non–algorithmic volume imbalance leads algorithmic volume imbalance, however, in the post announcement period, the direction of the lead–lag relationship is exactly reversed. Our results suggest that as algorithms are the fastest traders, their trading accelerates the information incorporation process.
- Published
- 2013
- Full Text
- View/download PDF
17. The Liquidity and Volatility Impacts of Day Trading by Individuals in the Taiwan Index Futures Market
- Author
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Robin K. Chou, George H. K. Wang, and Yun-Yi Wang
- Published
- 2012
- Full Text
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18. Intraday Liquidity Provision by Trader Types in a Limit Order Market: Evidence from Taiwan Index Futures
- Author
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Huimin Chung, Junmao Chiu, and George H. K. Wang
- Subjects
Financial economics ,Order (exchange) ,Economics ,Order book ,Futures market ,Algorithmic trading ,Volatility (finance) ,computer.software_genre ,Futures contract ,computer ,Limit order market ,Market liquidity - Abstract
This study examines the dynamic liquidity provision process by institutional and individual traders in the Taiwan index futures market, which is a pure limit order market. The empirical analysis obtains several interesting empirical results. We find that trader type affects liquidity provision in a number of interesting ways. First, although institutional traders use more limit orders than market orders, foreign institution (individual) traders use a relatively higher percentage of market (limit) orders in the early trading session and then switch to more limit (market) orders for the remainder of the day until close to the end of the trading day. Second, net limit order submissions by both institutional and individual traders are positively related to one-period lagged transitory volatility and negatively related to informational volatility. Third, net limit order submissions by institutional traders are positively related to one-period lagged spread. Finally, both the state-of-limit order book and order size significantly influence all types of traders’ strategy on submission of limit order versus market order during the intraday trading session.
- Published
- 2011
- Full Text
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19. Inventory Announcements, Jump Dynamics and Volatility in U.S. Energy Futures Markets
- Author
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C. Johan Bjursell, James E. Gentle, and George H. K. Wang
- Subjects
Heating oil ,Financial economics ,Energy information ,Econometrics ,Jump ,Economics ,Sample path ,Volatility (finance) ,Crude oil ,Futures contract - Abstract
This paper applies a nonparametric method based on realized and bipower variations calculated from intraday data to identify jumps in daily futures prices of crude oil, heating oil and natural gas contracts traded on the New York Mercantile Exchange. The sample period of our intraday data covers January 1990 to January 2008. We have obtained several interesting empirical results. (1) Large volatility days are often associated with large jump components and large jump components are often associated with the Energy Information Administration’s inventory announcement dates and other important news related to energy markets. (2) The volatility jump component is less persistent than the continuous sample path component. (3) Volatility and trading volume are higher on days with a jump at the inventory announcement than on days without a jump at the announcement. Furthermore, the intraday volatility returns to normal faster following inventory announcements with jumps than after announcements without jumps.
- Published
- 2010
- Full Text
- View/download PDF
20. The Price Impact of Institutional Trades on S&P 500 Index Futures
- Author
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George H. K. Wang, Andrew Lepone, and Alex Frino
- Subjects
Financial economics ,Mid price ,Equity (finance) ,Economics ,ComputingMilieux_COMPUTERSANDSOCIETY ,Futures contract ,Market conditions - Abstract
This paper examines price behavior surrounding institutional trades on S&P 500 Index Futures on the CME over the period January 1994 to June 2004. Using CTR data which unambiguously classifies trades as either buyer- or seller-initiated, we find that over the entire sample period, buyer-initiated trades have larger permanent price effects than seller-initiated trades, consistent with previous findings in equity markets. However, we find the permanent price effect for sales is greater than for purchases in bear markets, with the reverse found for bull markets. These results are consistent with the hypothesis that contemporaneous market conditions are the major determinant of asymmetric price effects between purchases and sales in both equity and futures markets.
- Published
- 2007
- Full Text
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21. Volatility and Trading Activity Following Changes in the Size of Futures Contracts
- Author
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Alex Frino, George H. K. Wang, Yiuman Tse, and Johan Bjursell
- Subjects
Economics and Econometrics ,Index (economics) ,Financial economics ,Normal backwardation ,Futures market ,Share price ,Monetary economics ,computer.software_genre ,Nominal size ,Variable (computer science) ,Open outcry ,Volatility swap ,Econometrics ,Economics ,Forward market ,Open interest ,Volatility (finance) ,Algorithmic trading ,computer ,Futures contract ,Finance ,Spread trade - Abstract
This paper examines the relationship between daily price volatility and trading activity one year before and after a change in the size of selected futures contracts. The following three contracts are included in this study: the Stock Price Index traded on the Sydney Futures Exchange (SFE), which had a contract split on October 11, 1993; the FTSE-100 index traded on the London International Financial Futures Exchange (LIFFE), which had a contract split on March 23, 1998; and the 90-Day Bank Acceptance Bill (BAB) traded on the SFE, which had a reverse split on May 1, 1995. We obtain several interesting empirical results. We observe that there is a positive relationship between daily price volatility and the number of trades (trading frequency) before and after a change in the size of the examined futures contracts. We find that the increase (decrease) in total trading frequency has the power to explain the increase (decrease) of daily price volatility after a contract split (reverse split). Most of the average trade size variable has an immaterial impact on price volatility. Decomposing the total trading frequencies into four trade size classes, we find that the trading frequencies for small and large trade size categories are highly significant in explaining changes in daily price volatility after the index futures contracts' splits. These results are consistent with the noise trading hypothesis (Black (1986)) and the hypothesis on less informed trading in index futures markets. For the BAB case, we find that the trading frequencies for small, medium and large sizes impact price volatility before and after the reverse contract split.
- Published
- 2007
- Full Text
- View/download PDF
22. 1023 The use of RENAL nephrometry scores for predicting tumour upgrading between core biopsies and surgical specimens: A prospective ex vivo study
- Author
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G-M. Zhang, Y. Zhu, H-L. Gan, H-K. Wang, G-H. Shi, H-L. Zhang, B. Dai, C-F. Wang, and D-W. Ye
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Urology - Published
- 2015
- Full Text
- View/download PDF
23. When Size Matters: The Case of Equity Index Futures
- Author
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George H. K. Wang and Aysegul Ates
- Subjects
Open outcry ,Financial economics ,Equity (finance) ,Forward market ,Business ,Algorithmic trading ,Commodity pool ,computer.software_genre ,Speculation ,Futures contract ,computer ,Spread trade - Abstract
The Chicago Mercantile Exchange introduced E-mini S&P 500 index futures in September 1997, and E-mini Nasdaq 100 index futures in June 1999. This paper empirically examines the effects from the introduction of the E-mini futures contracts on the market quality of the original S&P 500 and Nasdaq 100 index futures markets. The analysis is performed in a structural model framework, using bid-ask spreads, trading volume, and price volatility as measurements of market quality. We also evaluate, by using trader-size distribution data and the Commodity Futures Trading Commission's Commitments of Traders reports, whether the introduction of E-mini contracts has achieved their intended goal of attracting smaller investors. Finally, we evaluate any differences in the types of traders who use the E-mini futures contracts versus the original equity index futures contracts. Our empirical results suggest that two measurements of market quality of the original equity index futures (bid-ask spreads and trading volume) have not been negatively impacted, but one other measurement (price volatility) has increased, following the introduction of the E-mini equity index futures. Our empirical results also suggest that the E-mini index futures contracts have successfully attracted smaller investors to the equity index futures markets. In particular, 70 percent of all E-mini contracts traded are in single-contract units, and 95 percent are in units of less than five contracts (that is, less than the dollar value of a single original equity index futures contract). Furthermore, we found that a portion of the new, smaller traders in the E-mini equity index futures markets consists of day traders.
- Published
- 2003
- Full Text
- View/download PDF
24. COMPARISONS OF TWO METHODS IN DETECTING INTRAMUSCULAR PRESSURE DURING ISOMETRIC CONTRACTION; FASCICLE MORPHOLOGY AND MUSCLE HARDNESS
- Author
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T-Y Shiang, Keng-Fu Lin, H-K Wang, and Y-K Wu
- Subjects
Morphology (linguistics) ,Materials science ,Rehabilitation ,Biomedical Engineering ,Biophysics ,Orthopedics and Sports Medicine ,Anatomy ,Isometric exercise ,Fascicle ,Intramuscular pressure - Published
- 2007
- Full Text
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25. [Untitled]
- Author
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C.-Y. Chang, J. Chen, C.-H. Yen, S.-P. Chen, C.-M. Tiu, S.-Y. Chiou, H.-J. Chiou, D.A. Davidson, H.-R. Chiang, Y.-H. Chou, and H.-K. Wang
- Subjects
Oncology ,medicine.medical_specialty ,Acoustics and Ultrasonics ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,business.industry ,Biophysics ,Full field ,Internal medicine ,medicine ,Radiology, Nuclear Medicine and imaging ,Screening breast cancer ,business ,Breast ultrasound - Published
- 2006
- Full Text
- View/download PDF
26. A study of economic indicators in rail freight traffic cycles 1950–76
- Author
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George H. K. Wang
- Subjects
Transport engineering ,Set (abstract data type) ,Engineering ,Economic indicator ,business.industry ,Time series approach ,Transportation ,Management Science and Operations Research ,Composite index ,business ,Civil and Structural Engineering - Abstract
This paper examines the characteristics of rail freight traffic cycles from 1950 to 1976. Both the NBER's statistical indicator approach and time series approach are used to identify the leading indicators of rail freight traffic cycles from a set of leading economic indicators published by the Department of Commerce. The concepts and empirical results obtained by these two procedures are compared and contrasted. The interesting findings are: (1) the composite index of 12 leading indicators performs very well as a qualitative and quantitative predictor and (2) the empirical results obtained by the NBER approach are, in general, consistent with those obtained by the time series approach.
- Published
- 1981
- Full Text
- View/download PDF
27. The impact of fare and gasoline price changes on monthly transit ridership: Empirical evidence from seven U.S. transit authorities
- Author
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David Skinner and George H. K. Wang
- Subjects
business.industry ,Empirical modelling ,Tariff ,Transportation ,Management Science and Operations Research ,Transport engineering ,Public transport ,Economics ,Econometrics ,Revenue ,Transit (astronomy) ,Gasoline ,business ,Mode choice ,Empirical evidence ,Civil and Structural Engineering - Abstract
This paper presents eight empirical models of monthly ridership for seven U.S. Transit Authorities. Within the framework of these models, the impacts upon monthly ridership from changes in the real fare and gasoline prices are examined. Important findings are: (1) the elasticities of monthly transit ridership with respect to the real fare are negative and inelastic, ranging from 0.042 to 0.62; and (2) the elasticities of monthly transit ridership with respect to the real gasoline price are positive and inelastic, ranging from 0.08 to 0.80. Such results have important policy implications for decisions based on the relationships of price, revenue, and ridership; and for assessing the impacts of changing gasoline prices upon urban modal choice.
- Published
- 1984
- Full Text
- View/download PDF
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