Due to some factors of insecurity existed in nowadays Internet, the issue on access control and trust negotiation is introduced.

论文从说明目前网络存在的不安全因素入手，引出访问控制和信任协商的课题研究。

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Campus network currently facing many factors of insecurity, this article analyses the campus network problems, and put forward measures to strengthen the campus network security.

校园网络目前面临许多不安全的因素，本文分析了校园网络中存在的问题，提出了加强校园网络安全的措施。

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However, the injection pain as its common adverse reactions can increase the patients' pain and bad postoperative memories, thus affecting smooth anesthesia and increasing factors of insecurity.

注射引起的疼痛是其常见的不良反应，增加患者的痛苦和术后不良回忆，因而影响麻醉的平稳，增加了不安全因素。

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The report warns job insecurity and unemployment rates tend to go hand in hand - whenever one of these factors rises, the other one jumps up as well.

BBC: Work stress hits people in and out of work