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数据分享；Chaum-Pedersen证明；欺骗可检测；云储存 1

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一种基于Chaum-Pedersen协议的欺骗可检测云存储数据共享协议 Research Papers

Xin WANG, Bo YANG, Zhe XIA, Hong-xia HOU

《信息与电子工程前沿（英文）》 2019年第20卷第6期页码 787-800 doi: 10.1631/FITEE.1800066

摘要：本文将门限秘密共享技术和Chaum-Pedersen零知识证明相结合，提出一种可靠、安全的云数据共享方案。

关键词：数据分享；Chaum-Pedersen证明；欺骗可检测；云储存

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Connected morphable components-based multiscale topology optimization

PEDERSEN, Wei CHEN

《机械工程前沿（英文）》 2019年第14卷第2期页码 129-140 doi: 10.1007/s11465-019-0532-3

摘要： The advances of manufacturing techniques, such as additive manufacturing, have provided unprecedented opportunities for producing multiscale structures with intricate latticed/cellular material microstructures to meet the increasing demands for parts with customized functionalities. However, there are still difficulties for the state-of-the-art multiscale topology optimization (TO) methods to achieve manufacturable multiscale designs with cellular materials, partially due to the disconnectivity issue when tiling material microstructures. This paper attempts to address the disconnectivity issue by extending component-based TO methodology to multiscale structural design. An effective linkage scheme to guarantee smooth transitions between neighboring material microstructures (unit cells) is devised and investigated. Associated with the advantages of components-based TO, the number of design variables is greatly reduced in multiscale TO design. Homogenization is employed to calculate the effective material properties of the porous materials and to correlate the macro/structural scale with the micro/material scale. Sensitivities of the objective function with respect to the geometrical parameters of each component in each material microstructure have been derived using the adjoint method. Numerical examples demonstrate that multiscale structures with well-connected material microstructures or graded/layered material microstructures are realized.

关键词： multiscale topology optimization morphable component material microstructure homogenization