摘要：在充分考虑P2P存储特点的前提下,设计了一种新颖的基于erasure Code的分割文件P2P存储方案,构建Chord协议上的P2P文件存储结构。通过设计有效的文件存储、访问和更新功能,克服传统erasure Code冗余文件存储方案的不足,使存储文件具有一定的数据修改能力和结构伸缩能力。理论分析和实验仿真验证了设计方案在P2P存储系统中的可行性和有效性。

摘要：基于erasure Code编码冗余存储技术,结合传统的文件分割存储思想,提出称为SegEra的erasure Code与分割相结合的P2P存储结构.研究了SegEra的文件构成方式和存储结构特性,讨论其所适合的索引化离散数据存储分布架构;然后,从理论上研究了SegEra的P2P存储节点选择的优化方案,并针对P2P存储环境特点设计了与之相适应的简化算法;并通过仿真实验表明SegEra采用简化节点选择算法能够有效的提高存储文件的可用性水平.

摘要：This essay offers a philosophical perspective that, in breaking with both the open and surreptitious dialectical method still so prominent in academic discourse, follows Heidegger in trying to conceive of a radically non-dialectical manner of approaching affirmation, negation, and neutrality. As with Heidegger, this is attempted through a turn towards art and the ＂emancipated contingency＂ that characterizes much creative production. In contrast to action and production within the knowledge economy, the creation of the artwork concerns a knowing of unknowingness （described by Maurice Blanchot as the neutral） that demands a rethink of action in relation to truth and errancy. Indeed, the very working of the work of art is conceived here as a truth that is precisely ＂set to work＂ （Heidegger） by errancy. Through a consideration of the essential difference between choice and decision and the different ＂beginning＂ of art that this suggests, the essay concludes with some reflections of the theme of art＇s fascination and the and the affirmation of the unknown.

摘要：结合CDN和P2P两种不同网络结构的优点,改善传统内容分布网络的拓扑结构,给出了一种基于无比率限制纠错编码实现的P2P内容分布网络设计。介绍了该内容分布网络的系统结构及相关关键技术等方面内容,以及这种新内容分布网络的特性。

摘要：文章首先分析并实现了基于Vander monde矩阵的RS算法。接着本文提出并初步实现了一种基于RS编码算法和Chord协议的分布式存储系统,详细分析了系统的关键技术:Chord协议在分布式存储中的应用。最后本文介绍了系统的体系结构并进行了性能分析。