icff:a cloud forensics framework under the iaas model

分析了云取证技术所面临的挑战,提出了一种基础设施即服务(IaaS)云模型下的取证框架ICFF,并在开源IaaS云平台Eucalyptus中进行了实现,最后通过实验的方法对ICFF进行了验证分析。实验结果表明,该框架能够有效并快速地获取云平台中的证据数据。国家科技重大专项基金资助项目(2010ZX01036-001-002,2010ZX01037-001-002)|中国科学院知识创新工程基金资助项目(KGCX2-YW-125,KGCX2-YW-174)|国家自然科学基金资助项目(61170072)Technical challenges of cloud forensics was summarized and a forensics framework under an infrastructure as a service(IaaS) cloud model called ICFF was proposed. Then, this framework on the open source IaaS cloud platform Eucalyptus was implemented. Finally, a test case to demonstrate the effectiveness of ICFF was designed. Experiments show that the framework can obtain evidence data in cloud platform effectively and efficiently

ICFF: a cloud forensics framework under the IaaS model

分析了云取证技术所面临的挑战,提出了一种基础设施即服务(IaaS)云模型下的取证框架 ICFF,并在开源 IaaS 云平台 Eucalyptus 中进行了实现,最后通过实验的方法对 ICFF 进行了验证分析.实验结果表明,该框架能够有效并快速地获取云平台中的证据数据. Technical challenges of cloud forensics was summarized and a forensics framework under an infrastructure as a service(IaaS) cloud model called ICFF was proposed. Then, this framework on the open source IaaS cloud platform Eucalyptus was implemented. Finally, a test case to demonstrate the effectiveness of ICFF was designed. Experiments show that the framework can obtain evidence data in cloud platform effectively and efficiently.Technical challenges of cloud forensics was summarized and a forensics framework under an infrastructure as a service(IaaS) cloud model called ICFF was proposed. Then, this framework on the open source IaaS cloud platform Eucalyptus was implemented. Finally, a test case to demonstrate the effectiveness of ICFF was designed. Experiments show that the framework can obtain evidence data in cloud platform effectively and efficiently

不同过渡层对DLC薄膜力学性能和摩擦学性能的影响

薄膜与基体间的界面结合性能是决定薄膜性能发挥的关键要素。针对类金刚石薄膜(DLC)在硬质合金上结合力差的问题,采用线性阳极离子束复合磁控溅射技术在硬质合金YG8基体上设计制备了单层W过渡层、WC过渡层、双层W过渡层和三层W过渡层4种不同W过渡层的DLC薄膜,探讨了不同过渡层对DLC薄膜力学和摩擦学性能的影响。结果表明:不同过渡层结构的DLC薄膜结构致密,界面柱状生长随着层数增加及过渡层厚度的降低而打断,有利于改善薄膜的韧性。当为三层W过渡层时,DLC薄膜的断裂韧性达到最大值6.44 MPa·m1/2;与单层W过渡层相比,薄膜硬度有小幅下降,但薄膜内应力降低了55%,且膜/基匹配性更佳,结合强度高达85N,此时薄膜具有较低的摩擦因数和磨损率,表现出比较优异的抗磨减摩性能