This paper introduces some practical security models and their actions and characteristics.

介绍信息安全模型的作用和特征以及几种目前比较实用的安全模型。

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Only those systems which support multiple security policies can meet practical security requirements.

安全系统只有能够支持多种安全政策才能满足实际需求。

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Prevention is the only way to really protect yourself, and there are some practical security measures everyone should take.

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"I am quite convinced that one of the really crucial pieces that has to be filled in are these concepts of how the states will relate to each other in practical terms concerning security and in practical terms concerning economic issues, " she said.

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In the biggest museums of Moscow practical trainings on museum security systems work were realized.

UNESCO: The Second International Seminar on Museum Security and Methods of the 1970 UNESCO Convention Implementation | United Nations Educational, Scientific and Cultural Organization