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Introduction Multisignature is a joint signature generated by agroup of signers. The group has a security policy thatrequires a multisignature to be signed by all groupmembers with the knowledge of multiple privatekeys. Digital multisignatures should have… 相似文献
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介绍数字样机的概念以及在汽车电器系统上的应用,结合其技术特点和优势,总结对车型开发的经济优势以及对整个车型开发周期的贡献。 相似文献
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从江城堤防系统论沿江城市环境特色设计 总被引:2,自引:0,他引:2
本文以可持续发展战略为视角 ,剖析了目前沿江城市堤防系统的利弊。在确保其防汛的基本机能的前提下 ,强调发挥沿江城市的优势 ,合理利用和保护自然资源与自然环境 ,创造有其特色的城市形象 ,并取得一定的经济效益。这对于当今占国内大城市近 70 %的沿江城市的堤防系统改造与沿江地带开发有着无可估量的参考价值。 相似文献
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结合地理信息系统的特点提出了将GIS技术应用于港口管理信息系统的思想,利用Visual Basic 6.0,Mapx和SQL Server 2000等软件实现了系统的设计。阐述了基于GIS的港口管理信息系统的模型设计,数据库建立,功能实现,以及在系统的设计过程中所采用的组件技术、多媒体技术等。 相似文献
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Fault reconfiguration of shipboard power system is viewed as a typical nonlinear and multi-objective combinatorial optimization problem. A comprehensive reconfiguration model is presented in this paper, in which the restored loads, switch frequency and generator efficiency are taken into account. In this model, analytic hierarchy process(AHP) is proposed to determine the coefficients of these objective functions. Meanwhile, a quantum differential evolution algorithm with triple quantum bit code is proposed. This algorithm aiming at the characteristics of shipboard power system is different from the normal quantum bit representation. The individual polymorphic expression is realized, and the convergence performance can be further enhanced in combination with the global parallel search capacity of differential evolution algorithm and the superposition properties of quantum theory. The local optimum can be avoided by dynamic rotation gate. The validity of algorithm and model is verified by the simulation examples. 相似文献