Cross‐Section Stock Return and Implied Covariance between Jump and Diffusive Volatility

I examine the information content of option‐implied covariance between jumps and diffusive risk in the cross‐sectional variation in future returns. This paper documents that the difference between realized volatility and implied covariance (RV‐ICov) can predict future returns. The results show a significant and negative association of expected return and realized volatility–implied covariance spread in both the portfolio level analysis and cross‐sectional regression study. A trading strategy of buying a portfolio with the lowest RV‐ICov quintile portfolio and selling with the highest one generates positive and significant returns. This RV‐Cov anomaly is robust to controlling for size, book‐to‐market value, liquidity and systematic risk proportion. Copyright © 2015 John Wiley & Sons, Ltd.     

Structures of Textile-apparel Supply Chain： Concepts and Cases

In recent years, supply chain management （SCM） has been in popularity as a new management philosophy for all industries, including textile and apparel industries. The textile-apparel supply chain is relatively complex because it encompasses many participants such as yarn manufacturers, fabric manufacturers, garment manufacturers and retailers. Although many scholars are engaged in researching SCM in textile and apparel industries, a systematic classification of textile-apparel chain does not exist. The paper proposes three types of textile-apparel chain, nominated vertical integration chain, traditional sourcing chain and 3P-hub （third party as the hub） chain. Different coordinators exist in different types of chain. Three Hong Kong headquartered companies, Esquel Group, TAL Apparel Ltd., and Li ＆ Fang （Trading） Ltd. are used as cases responding to each type of the structures respectively.     

从苏青到池莉--浅析中国现当代市民文学的承传

苏青是四十年代红极上海的“市民文学“作家,池莉所处的时代、生活经历与苏青不同,但她们都执着于平民情怀,执着于“市民文学“的创作,两者之间有着一脉相承的关系,共同成为了中国现当代市民文学上不可或缺的组成部分.文章通过她俩的价值立场和创作风格的比较,说明苏青和池莉都是继老舍辈市民文学作家以后的两代代表作家.     

螺旋桨搅拌槽内流动场二维数值模拟

利用二维ｋ－ε模型对搅拌槽内流动场进行了数值分析,模型成功地预报了叶轮区流动特性,定性描述了循环区运动形式,计算考察了不同桨槽径比（Ｄ／Ｔ）下宏观流动场变化。计算结果表明,湍流能量主要产生和消耗于叶轮区及近壁区域、循环区域内湍流能量值很小。     

化石、矿物和岩石样品的Sm—Nd同位素实验方法研究及其应用

本文详细介绍了化石、矿物和岩石样品中Sm—Nd同位素化学制备与质谱测定实验技术。样品采用Teflon密闭熔样法,用阳离子交换程序分离Sm和Nd。采用钽/铼三灯丝和多接受技术在VG354质谱计上以Sm~+和Nd~+形式测定Sm和Nd。Nd同位素比值以 ~(146)Nd/~(144)Nd=0.7219为标准化值。对BCR—1岩石标样测定为~(143)Nd/~(144)Nd=0.512662±8(2σ_m)。Nd全流程本底为5—7×10~(-11)克。采用上述实验方法研究了中国大阳岔国际寒武/奥陶系界线候选层型剖面中古生物化石 Sm—Nd同位素体系,取得了可靠的数据和有意义的地质结论。     

“十化”地理教学法

本文如实地介绍了“十化”地理教学法,为提高中学地理教法思想和教学水平进行交流和探讨。     

Late retroperitoneal recurrence of hepatocellular carcinoma 12 years after initial diagnosis

Hepatocellular carcinoma (HCC) is an aggressive tumor with poor long-term prognosis.Here,we present an unusual patient with a solitary recurrence of HCC in the right kidney 12 years after the initial diagnosis.This illustrates the importance of considering late recurrence in patients with a history of HCC and the management of these metastases.