生命科学基础实验课程结构改革的探索

从改革背景与历程出发,分析了生命科学基础实验课程在结构方面存在的问题,提出了实验课程结构改革的构思:在新构建的实验课程体系中,建立以基础技能素质训练、生化基础素质训练、工程综合素质训练3个实验教学平台。对应3个实验教学平台分别设置了7门独立实验课,即:形态解剖实验、细胞遗传实验、生化技术实验、微生物及组织培养实验、基因操作技术。构建以培养学生创新思维、实践素质和创新能力为实验教学目标,以独立设课为特征的综合型、设计型实验教学新模式。     

组建基于MPLS_VPN的IP城域网网络方案

在不远的将来,VPN技术将成为广域网建设的最佳解决方案,它不仅会大大节省广域网的建设和运行维护费用,而且增强了网络的可靠性和安全性。同时,VPN会加快企业网的建设步伐,使得集团公司不仅仅只是建设内部局域网,而且能够很快地把全国各地分公司的局域网连起来,从而真正发挥整个网络的作用。VPN对推动整个电子商务、电子贸易将起到不可低估的作用。该解决方案基于二层MPLS技术,搭建运营网络平台,提供高带宽的光纤接入、ADSL接入,以最全面的业务来迅速扩展客户。网络具备灵活性、安全性、经济性、扩展性等特点。本文详细阐述。     

Blind channel equalization algorithm based on dual unscented Kalman filter for chaotic multi-input multi-output communication systems

To reduce channel noise,fading,and inter-user interference effectively in the chaotic communication systems with multi-user,a blind channel equalization algorithm based on dual unscented Kalman filter algorithm is proposed.Assuming that the coefficients of a multi-input multi-output (MIMO) channel can be described by an autoregressive model,two separate state-space representations are used for the signals and coefficients.Then two unscented Kalman filters are used to estimate chaotic signals and channel coefficients simultaneously.The simulation results indicate that the algorithm can effectively track the coefficients of the multi-path fading channel in chaotic MIMO communication systems at a fast convergence speed.