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文章/文档 We analyze, both analytically and numerically, the effectiveness of cloaking an infinite cylinder f
We analyze, both analytically and numerically, the effectiveness
of cloaking an infinite cylinder from observations by electromagnetic
waves in three dimensions. We show that, as truncated approximations
of the ideal permittivity and permeability tensors tend towards
the singular ideal cloaking fiel ...
通信网络 移动Ad hoc环境下的LBS位置保护算法的研究
传统的基于位置信息的服务（LBS）的隐私保护需要LBS提供者（简称LSP）与用户之间通过第三方作为中介来进行信息交换，但这种模式极易遭到攻击者攻击。为此提出一种基于K-匿名机制的隐形空间算法KABSCA（k-anonymity based spatial cloaking algorithm ），通过移动设备独立建立一个分布式网络直接与LSP通讯进而避免了第三方 ...
文章/文档 A new type of cloak is discussed: one that gives all cloaked objects the appearance of a flat conduc
A new type of cloak is discussed: one that gives all cloaked objects the appearance of a flat conducting
sheet. It has the advantage that none of the parameters of the cloak is singular and can in fact be made
isotropic. It makes broadband cloaking in the optical frequencies one step closer.