Propose an object-oriented and formal access control model for developers to design security mechanism of systems and for users to perform their duties securely and efficiently.

采用对象技术提出了一个通用的访问控制模型，提供应用级的访问控制机制和安全管理方法。

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An alternative means of correlating requests to access a particular calculator total is to make that correlation a formal part of the calculator service interface.

使请求与对特定的计算器总数的访问相关联的一个可供选择的方法，是使这种相关性成为计算器服务接口正式的部分。

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Firms that operate in the formal sector can have, in principle, better access to credit.

他说：“正式部门中的企业从原则上来说更容易获得信贷。”

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The Scottish Parliament's equal opportunities committee previously heard from members of the community, who said they encountered problems, particularly with formal sites and access to services.

BBC: No legal move to provide traveller sites

Along their riverfront, the Canadians have made parkland: a strip of violently landscaped formal gardens offering access to Canada's classic panoramas and regularly spaced snack stands.

NPR: Excerpt: 'Inventing Niagara'

This denies them access to formal employment, education and driving licences, while making them more vulnerable to intimidation.

ECONOMIST: Chinese influence in Nepal grows