The security portfolio investment theory was promoted on the basis of western developed security market.

证券组合投资理论是基于西方较完善的证券市场提出的一套投资理论。

In this paper, the portfolio investment theory and the real estate investment are combined to find out how to reduce the risk of the real estate investment.

本文将房地产投资和投资组合理论相结合，探讨如何利用房地产的投资组合来降低房地产投资风险。

And by this means, risk measure and premium pricing are related, Meanwhile, from this way, "the mean value principle" can be applied into the portfolio investment and pricing for the combined risks.

由此，达到了风险的度量和保费定价的有机结合，同时，也将经典的“平均值原理”从个体风险推广到了组合投资和组合风险的度量定价中。

Foreign capitals include foreign direct investment, international loan and international portfolio investment.

外资包括外商直接投资、国际信贷和国际证券投资。

In this paper, the portfolio investment model with probability criterion is investigated.

提出一种基于概率准则的新型组合证券投资模型。

Portfolio investment is a long-term investment in which the investor does not exercise any managerial control.

有价证券投资是一种长期投资，投资者不行使任何的经营管理权。

Portfolio investment can be either debt or equity, but the factor that distinguishes portfolio from direct investment is that control does not follow this kind of investment.

间接投资可以以负债或以资产的方式进行投资，但它与直接投资是有区别的，它不享有对企业的控制权。

This method provides some scientific evidence and an algorithm to the optimal portfolio investment.

为证券组合投资的最优化提供科学依据和有效的计算方法。

Investment Fund is an investment instrument characterized as portfolio investment and experts management.

投资基金是一种集合投资、专家管理的投资工具。

The evidence on whether portfolio investment affects growth is even more sparse than the evidence on FDI.

有关有价证券投资是否影响经济增长的证据比有关外国直接投资的证据更加稀少。

Secondly, the validity of portfolio investment is analyzed from the micro foundation in terms of theory, and its advantage is studied combining the analysis of cases.

其次，从理论角度探析了组合投资有效性的微观基础，分析了其具有的优势，并结合案例分析。

Portfolio investment is the main form of the foreign indirect investment.

比例的圆周一圈，它的直径是有价证券投资。

Portfolio investment refers to the investment through financial instruments rather than by managing the company directly.

指只通过金融工具而并不参与公司的管理而进行的投资。

On the basis of hedging theory, the factor of speculation is merged, and the hedging portfolio investment model is developed to be the model of hedging and speculation portfolio investment.

在套期保值投资理论的基础上，融入了投机的因素，将套保组合投资模型发展为套保与投机结合的模型。

In this paper, the authors state the theory and method of hedging and speculation portfolio investment.

本文提出套期保值与投机的组合投资理论和方法。

" 3 The report describes how organizations may use a portfolio investment approach to select, control, and evaluate IT projects.

3报告介绍了企业如何使用组合投资方法来选择、控制，及评估IT项目。

This paper defines the pure risk as a kind of probable loss in the portfolio investment.

本文将证券投资的纯粹风险界定为未来的一类可能损失的不确定性。

In this paper, we put forth a kind of interval number linear programming method for the portfolio investment.

提出证券组合投资分析的区间数线性规划方法。

Style investment is an important branch of portfolio investment.

风格投资是组合投资理论研究中的一个重要分支。

Because portfolio investment can decrease the risk in case that the profit can't be decreased, they often take portfolio investment .

所以为了降低投资风险，证券投资者一般采用组合投资的方法。

It also provides the absolute negative deviation measure and the semi-variance measure of the pure risk and sets up the multiobjective decision-making models of the portfolio investment.

给出了纯粹风险的绝对负偏差和半方差两类测度并用于建立证券投资多目标决策模型。

We used indifference curve method(IDCM)to calculate the optimal portfolio investment proportion and gave examples to verify the results in the paper.

应用无差异曲线法求解出这种效用函数的最优投资比例，并对本文所得出的结论进行了实例应用分析。

Then the methods of fuzzy optimization and evolution programming are adopted to study the portfolio investment under a new risk concept, and an algorithm for solving the problem is given.

运用模糊优化和进化规划方法，研究新风险概念下的模糊证券组合选择，并给出了其相应算法。