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Previously, few, if any, comparative tests of performance of Jackwerth's ( 1997 ) generalized binomial tree (GBT) and Derman and Kani ( 1994 ) implied volatility tree (IVT) models were done. In this paper, we propose five different weight functions in GBT and test them empirically compared to both the Black‐Scholes model and IVT. We use the daily settlement prices of FTSE‐100 index options from January to November 1999. With both American and European options traded on the FTSE‐100 index, we construct both GBT and IVT from European options and examine their performance in both the hedging of European option and the pricing of its American counterpart. IVT is found to produce least hedging errors and best results for American call options with earlier maturity than the maturity span of the implied trees. GBT appears to produce better results for American ATM put pricing for any maturity, and better in‐sample fit for options with maturity equal to the maturity span of the implied trees. Deltas calculated from IVT are consistently lower (higher) than Black‐Scholes deltas for both European and American calls (puts) in absolute term. The reverse holds true for GBT deltas. These empirical findings about the relative performance of GBT, IVT, and Standard Black‐Scholes models are important to practitioners as they indicate that different methods should be used for different applications, and some cautions should be exercised. © 2002 Wiley Periodicals, Inc. Jrl Fut Mark 22:601–626, 2002 相似文献
23.
Bong Gyou Lee Jeong Ho Kwak Ki Youn Kim Seong Jin Kim 《Telecommunications Policy》2009,33(5-6):296-308
In 1996, the Korean mobile communication market was the first in the world to commercialize the code division multiple access (CDMA). Since then, the voice-based mobile phone market has continued to grow and has now reached near saturation. Having recognized the potential of the mobile data service as a new source of profit, telecommunication operators are scrambling to evolve 3.5 generation (3.5G) technology in order to lead market competition. Recently, the Korean 3.5G mobile telecom market has faced stiff competition from CDMA-based EVDO Rev.A and global system for mobile telecommunications (GSM)-based high-speed downlink packet access (HSDPA). In addition, the world's first wireless LAN-based wireless broadband internet (WiBro) service was commercialized in June, 2006. This paper reviews the current status of the 3.5G technology and analyzes the service standardization strategies from the viewpoint of technological evolutions. This paper also suggests implications for Korea's specific circumstances where different mobile telecom technologies complement and compete with one another. Korea's experiences may serve as important lessons for other countries or operators who try to introduce the 3G and look beyond mobile telecom technologies. 相似文献
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唐志 《生态经济(学术版)》2008,(1):107-110
学术界对对外贸易与生态环境的关系还存在争论。本文建立了对外贸易影响环境的投入产出分析模型,并以此模型为基础,利用我国2002年投入产出表和我国能源消费数据,对我国2002年对外贸易对环境的影响进行了实证分析,得出了对外贸易有利于我国生态环境改善的结论。 相似文献
25.
法律与政治的密不可分、司法机构的政治属性及司法职业自身的政治因素决定了政治素质是法官素质的重要内容。法官政治素质包括保持司法独立、以人民利益为重、保持司法克制、区分政治问题和法律问题以及约束自身政治活动等内容。培养与提高法官政治素质,应当从法官选任重视政治素质标准、继续教育注重政治素质培养和完善职业保障机制等方面入手。 相似文献
26.
土地革命是中国民主革命的基本内容,毛泽东在领导中国新民主主义革命运动中,一直较关注中国农民土地问题的彻底解决,并建立健全了一系列有关土地问题的法律制度,它对今天的土地立法和发展农村经济,建设有中国特色的社会主义土地法律制度有指导意义。 相似文献
27.
Cheng Jin -chuan 《上海商学院学报》2003,(1)
本文分析了入世后,上海企业家在做大商业品牌中,应正确处理好的六个关系,以及有关的述评。 相似文献
28.
Jin E. Zhang 《期货市场杂志》2003,23(6):535-560
This article explores the price of continuously sampled Asian options. For geometric Asian options, we present pricing formulas for both backward‐starting and forward‐starting cases. For arithmetic Asian options, we demonstrate that the governing partial differential equation (PDE) cannot be transformed into a heat equation with constant coefficients; therefore, these options do not have a closed‐form solution of the Black–Scholes type, that is, the solution is not given in terms of the cumulative normal distribution function. We then solve the PDE with a perturbation method and obtain an analytical solution in a series form. Numerical results show that as compared with Zhang's ( 2001 ) highly accurate numerical results, the series converges very quickly and gives a good approximate value that is more accurate than any other approximate method in the literature, at least for the options tested in this article. Graphical results determine that the solution converges globally very quickly especially near the origin, which is the area in which most of the traded Asian options fall. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:535–560, 2003 相似文献
29.
一、商业银行信用风险管理的主要模型和方法商业银行传统的信用风险度量方法有信贷决策的“6C”法和信用评分方法等。“6C”法是指由有关专家根据借款人的品德(character)(借款人的作风、观念以及责任心等,借款人过去的还款记录是银行判断借款人品德的主要依据);能力(capacity) 相似文献
30.