Since a mass of the deterministic and probabilistic information and knowledge must be handled to research the open system , and the single qualitative explanation or the single model can not deal with them entirely , a method integrating the qualitative with the quantitative should be employed 由于研究开放的系统必须处理大量的信息和知识，这些信息和知识既包含确定性的，又包含随机性的，单一的定性解释或单一的数学模型都无法完全地处理和利用它们，宜采用从定性到定量的综合集成方法。
Such factors as product trade , factor mobility , knowledge diffusion and technological diffusion make anfractuous relation lie in the system . so region is mutual related , not isolated . the economic growth of one region depends on not only its element devotion , but also growth traces of other regions 但是,区域经济是一个开放的系统,产品贸易、要素流动、知识和技术扩散等因素使得这些系统之间存在着错综复杂的联系,这决定了区域经济体之间不是孤立存在而是相互联系的,一个区域经济的增长不仅依赖于本身基础和要素的投入也依赖于其它的区域增长的轨迹。
Tts creativity consists in that the use of the quantiative index - - the atandard deviation of the npv can make the analysis reflect the prachce mor objechvely , and that it is a opeiilng system that new variables can be added into according to the practical conditions , which both increase the prachcal value of the system 它较已有分析系统的创新处在于：用净现值的标准差来对房地产投资的各种风险进行定量化，使风险分析更加客观地反映真实的经济状况。同时该系统模型还是一个开放的系统，它并不局限于某几种风险的分析，可根据实际情况不断加入新的变量，其实用价值较高。
Only when an enterprise is always aware of the external environment on which its existence and survival depends , understands deeply its internal conditions , pursues the advantage and avoid the disadvantage , develops its strong points and avoid its weak points and formulates its future development strategy can the enterprise establish itself in an invulnerable position in the competition that is becoming more and more furious 在市场经济条件下，企业是一个开放的系统，企业只有时刻把握其赖以生存的外部环境，并深刻了解自己的内部条件，做到趋利避害，扬长避短，制定着眼未来的发展战略，才能使自己在竞争日趋激烈的今天，永远立于不败之地。
