Study work mainly is : part one , look back and look ahead the financial development history and present situation that derives market and the futuristic tendency , summarize domestic and international theory and method about venture capital investment , discuss establishment and develop the financial necessariness and important meaning of our country that derives market ; part two , establishthe relation between investment risk and the radom expectation effectiveness of investor ? verage stochastic dominance of asset profit ; part three , covari - ance matrix in mean - variance model is analysed with sensitivity analysis and fuzzy analysis ; part four , have looked back the concept of option , the price relation of option and black - scholes option price formula , have put forward option price formula of the discounted value of option present value ; part five , have looked back the financial concept and its classfication that financial derivatives risk , have summarized financial risk management theory , measured and assessed methods of financial derivatives risk 主要研究工作为：第一章，回顾和展望金融衍生市场的发展历史、现状和未来，综述国内外关于风险投资的理论与方法，论述建立和发展我国金融衍生市场的必要性及重要意义；第二章，建立投资者的随机期望效用与投资风险之间的关系? ?平均随机占优；第三章，均值方差模型协方差矩阵的灵敏度分析与模糊分析；第四章，回顾了期权的概念、期权的价格关系和black - scholes期权定价公式，提出了欧式看涨期权价格的折现值所满足的微分方程；第五章，回顾了金融衍生品风险的概念及其分类，总结了金融衍生品的风险管理理论和金融衍生品风险计量和评估方法。
We ' d contribute to the goal to let ordinary people get rich by giving them the ch ance to benefit from tourism industry . the key problem of tourism industry in west china is management . administrators and managers ( including related government departments ) have no strategic vision 目前中国西部旅游业中存在的主要问题是管理问题，经营管理者(其中包括政府有关部门)缺乏战略眼光，考虑可持续性发展少，考虑眼前经济利益多；不太了解服务对象的需求，甚至不太顾及中国的国情，因此在服务和管理上有些缺点值得注意克服。
The prediction of disastrous space weather is a hot topi c among solar - terrestrial physics and high technological fields . we propose that the future forecasting of the physical conditions that the violent solar disturb ance causes at the earth by propagating in solar wind depends heavily on the num erical method . this paper analyses the existing problems we are facing in the num erical prediction of disastrous disturbance events in solar - terrestrial space , an d then gives some suggestions for future study . for such a purpose , a six step sol ution method is developed to deal with one - dimensional symmetric interplanetary shock dynamics . it should be point out that that initialization of fully self - con sistent 3 - d mhd codes considering the solar - interplanetary - geomagnetic coupled r elations with initial - boundary values at 1r of the global output of solar pl asma and magnetic field using available solar observations is an essential requi rement in space weather operational codes for forecasting purposes 空间灾害性天气的预报是日地物理学界及高科技领域的热门话题.未来预测太阳剧烈扰动所造成的行星际风暴到达地球空间的状态势必借助于数值方法.浅析了空间灾害性扰动事件数值预报存在的问题及未来设想，针对这一目的对一维球对称问题提出了处理行星际激波的6步求解方法，指出未来空间灾害性扰动事件预报模式应是一个基于三维的以真实太阳风为背景自洽建立起来的、以太阳等离子体输出及磁场全球结构为初边值、太阳、行星际、地磁因果耦合模式
At compared with ni - cd battery is better owing to high specific cap - acity , no memory effect , and no cadmium pollutio - n . while it is used on electric vehicle , the complete weight of the vehicle can be reduced , the perform - ance of application is good and servicing life is long . it is an ideal power source for electric vehile 镍氢电池与镍镉电池相比,既相似又超越，比能量高、无记忆效应、无镉公害,应用于电动车上时,使整车重量减轻、使用特性优良、寿命长，是理想的电动车电源。
