Abstract: In securities markets, the expected rates of security returns are difficulty to estimate precisely due to many uncertainties. In this paper, we use fuzzy numbers to deal with the uncertainty. A new portfolio selection model with fuzzy coefficients is proposed. In this model we extend absolute deviation to a fuzzy case to measure the risk of portfolio. Different dominance criteria are used to transform the portfolio selection model to its equivalent deterministic-crisp linear programming problem. An example is given to illustrate that the new models can be used efficiently to solve portfolio selection problems.
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Pyramid equity structure is a widespread kind of ownership structure in securities markets in our country.
金字塔股权结构是我国证券市场上广泛存在的一种公司所有权结构。
All the problems in securities markets stem from the unreasonable structures, imperfect management in the companies and incomplete supervising system.
证券市场一切问题的产生,最终源于上市公司股权结构不合理,公司内部治理结构不健全,以及证券市场监管体系不完善。
Compare the efficient markets hypothesis and fractals markets hypothesis, indeed they are the different methods from the point of linear and nonlinear in securities markets.
本文主要是比较了有效市场假设与分形市场假设,也即比较了证券市场的线性与非线性的观点。有效市场假设对应于正态分布,分形市场假设对应于“肥尾”分布。
Lee Kyoung-su,a market analyst at Taurus Investment and Securities in Seoul, (Voice) He says markets are worried about the possibility of a second financial crisis, like the one that began in the United States last year.
VOA: standard.2009.11.27
In the more advanced countries, there is more trust in the securities markets, so we don't need this relationship banking as much.
在更加发达的国家中,证券市场拥有更高的信誉,所以我们不需要如此依赖银行
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