半异体形变势及其应变层异质结带阶

采用一种只计算体材料的能带、带阶参数和形变势就能预言不同应变情况下的应变层异质结带阶的方法，并通过ＩｎＰ／ＩｎＡｓ、ＩｎＰ／ＧａＰ、ＧａＡｓ／ＩｎＡｓ、ＧａＰ／ＧａＡｓ、ＡｌＡｓ／ＩｎＡｓ等应变层异质结在不同应变情况下的价带带阶计算，并证实了该方法的实用性。     

Growth mechanism of liquid Hg/solid β-HgS metal-semiconductor heterostructures

Density functional theory （DFT） was utilized to simulate the reactions occurred in the mixture solution of cysteine and Hg（II） ions with the ratio 〈 2. Simulation result shows that Hg ions will coordinate to cysteine by the thiol groups with the form of S-Hg2 and S-Hg3; and moreover, the content of free Hg ions can only be reduced by these two forms. OH- plays an important role in the growth of β-HgS, because its nucleophilic substitution reaction supplies plenty of Hg-S-Hg radicals, which will be adsorbed onto the surface of liquid mercury ball and form the precursor of 13-HgS（111） plane. Three valent bonds adsorption of Hg-S-Hg radicals onto the surface of Hg ball has more adsorption energy （-32.768 kcal mol-1） than that of two valent bond adsorption （-20.882 kcal - mol-1）. Hg balls will stop growing after completely covered with Hg-S-Hg radicals and their size will be limited. The growth direction of β-HgS is parallel to the ＂repel- ling＂ force, that is [111] direction in β-HgS lattice. The calculated results are in good agreement with the experimental observations, demonstrating that the DFT method can be taken as a very useful tool to interpret the solution reactions that cannot be solved by conventional methods.     

闪锌矿GaN/GaxIn1-xN应变异质结中电子-光学声子散射率

采用介电连续模型,计及晶格应变对材料物理参数的影响,利用费米黄金定则讨论闪锌矿GaN/GaxIn1-xN应变异质结中四支光学声子对电子的散射.计算结果表明,该异质结中对总散射率的贡献主要来自沟道材料的体纵光学声子;考虑电子吸收声子过程时,晶格应变对总散射率有较大影响.     

宏观经济与有关社会发展开放复杂巨系统及其综合集成研究

首先提出了异质复杂性的概念与定义，讨论了宏观经济系统的异质复杂性及带不确定性变组元变结构系统模型与其复杂性，然后讨论了从定性到定量的综合集成问题及实现途径之一的综合集成系统重构分析，最后介绍了这一方法在宏观经济研究中的应用及计算结果。     

如何做好融资前的准备工作？

企业在创业阶段风险较大,寻求外部融资相对较难,如果不认真做好准备工作,成功的希望非常渺茫.另一方面,在企业家缺乏相关经验的情况下,即使意外成功,交易结构和投资条款也对企业很不利,为今后的发展埋下隐患.所以,要成功实现创业企业的外部融资必须预先做好融资准备工作.     

我国《证券法》对中小投资者的保护之分析

我国中小投资者在资本市场处于相对弱势的地位,长期以来,权利的行使受到一定的制约。比较分析国外的法律对中小投资者的保护,发现我国对中小投资者的保护的不足,重新设计证券法律责任,保护中小投资者的诉权实现,是保护中小投资者的最有效的途径。     

我国建立OTC市场的相关问题探讨

OTC（Over the Counter）市场，即场外交易市场，或称柜台交易市场，是指在证券交易所以外进行的各种证券交易活动的场所，市场参与各方由众多企业、证券公司、投资公司以及普通投资者组成，是一个分散且无固定交易场所的无形市场。     

纸黄金投资入门

黄金以其耐用、美观和稀有的特性．自古以来就是人们保值增值的有效工具。近年来，黄金投资更是风靡全球，广受投资者追捧。     

钟彬娴 成功女性的典范

全球知名财经杂志美国《福布斯》近日公布了2007年度“全球最具影响力女性榜”。雅芳全求CEO钟彬娴再次人选，名列第19位。钟彬娴曾多次荣获权威机构评选的“最有影响力的商业女性”、“全美最杰出领导人”“投资者最爱十大女性CEO”等称号。自2004年福布斯设立“全球最具影响力女性榜”以来，钟彬娴女士每年都荣登该榜，并名列前茅。     

DOES INVESTOR SENTIMENT PREDICT STOCK RETURNS？ THE EVIDENCE FROM CHINESE STOCK MARKET

This paper examines the proxy variables of investor sentiment in Chinese stock market carefully, and tries to construct an investor sentiment index indirectly. We use cross correlation analysis to examine lead-lag relationship between the proxy variables and HS300 index. The results show that net added accounts （NAA）, SSE share turnover （TURN）, and closed-end fund discount （CEFD） are leading variables to stock market. The average first day return of IPOs （RIPO） and relative degree of active trading in equity market （RDAT） are contemporary variables, while number of IPOs （NIPO） is a lagging variable of stock market. Using the sentiment proxy variables with most possible leading order, and forward selection stepwise regression method, the empirical results on monthly stock returns reveal that three leading proxy variables can be used to form a sentiment index. And the out of sample tests prove that this sentiment index has good predictive power of Chinese stock market, and it is robust.