For these problems, extended the original UCON, presented a comprehensive obligation model and finally proposed a general usage control enforcement model.

针对上述问题，给出了一个完整的职责模型，扩展了原有的UCON，并提出了一种通用的使用控制实施模型。

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Enforce those policies through enforcement points in the process and workflow model.

通过流程及工作流模型中的实施点来实施那些策略。

youdao

The analyst can add service elements to the model which represent pre-existing services that provide enforcement points.

分析员可以向模型中添加服务元素，这代表了提供实施点的现有服务。

youdao

To the best of my knowledge, only Palo Alto Networks enables the enterprise to re-establish a positive enforcement model between networks of different trust levels.

FORBES: Tearing away the veil of hype from Palo Alto Networks' IPO

The bigger issue for the SEC is its terrible enforcement model.

FORBES: New Agressive SEC Boss, Same Old Inept SEC

The purpose of a firewall is to establish a positive enforcement model, i.e. limit traffic between networks of different trust levels to that which is allowed and block everything else.

FORBES: Tearing away the veil of hype from Palo Alto Networks' IPO