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在综合各相关技术特性的基础上,分析数字林业平台(DFP)的安全特性和身份认证现状,提出一个适合DFP应用的统一身份认证与用户管理系统(UAS)的新型体系结构.在系统的功能实现部分,主要解决用户状态的保存、信息的交换以及统一认证和授权,同时以DFP中的两种资源访问情景和UAS解决方案来阐述UAS的实现. 相似文献
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家畜遗传多样性及其检测方法 总被引:6,自引:0,他引:6
遗传多样性是当前生物学研究的重要内容之一。本文阐明了家畜遗传多样性的概念及研究的重要意义,并详细论述了遗传多样性在DNAI 的几种常用检测方法,同时对它们的应用范围,应用避限和应用趋势进行了评价。 相似文献
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Slawomir Rump Teresa Gidynska Elzbieta Galecka Oktawiusz Antkowiak Marek Kowalczyk 《Pest management science》1999,55(10):1033-1035
The summary deals with the anti-convulsant and antilethal effects of a new benzodiazepine receptor partial agonist, imidazenil, in DFP intoxication. It has been demonstrated that imidazenil (2–5 mg kg−1) significantly decreases convulsion intensity, rapidly inhibits seizure patterns in brain bioelectrical activity and significantly increases the anti-lethal efficacy of atropine plus obidoxime therapy. These effects are comparable to diazepam at 5 mg kg−1. However, diazepam exhibits myorelaxant activity at therapeutic doses, which are only observed at 5–10 times the therapeutic doses of imidazenil. 相似文献
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李董辉 《湖南农业大学学报(自然科学版)》1993,20(2)
This paper deals with the global convergence problem of DFP method for unconstrained optimization problems. For the case of Armijo line searches,we prove the global convergence property of DFP method used for the minimization problem of strickly quadratic 相似文献
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