Replica consistency maintenance plays a key role to improve the efficiency of replica management. This paper proposed one P2P Replica-tree based consistency maintenance strategy. In this strategy, social capacity is adopted for description of replica clustering coefficient, and one replica-tree is formed by dividing replica nodes into multi-levels. Especially peer-to-peer network with first-cla...

Partial collection replication improves performance and scalability of a large-scale distributed information retrieval system by distributing excessive workloads, reducing network latency, and restricting some searches to a small percentage of data. In this paper, we rst examine queries from real system logs and show that there is suucient query locality in real systems to justify partial colle...

The large-system performance of maximum-a-posterior estimation is studied considering a general distortion function when the observation vector is received through a linear system with additive white Gaussian noise. The analysis considers the system matrix to be chosen from a large class of random ensembles. We take a statistical mechanical approach by introducing a spin glass corresponding to ...

Replica exchange molecular dynamics is a multicanonical simulation technique commonly used to enhance the sampling of solvated biomolecules on rugged free energy landscapes. While replica exchange is relatively easy to implement, there are many unanswered questions about how to use this technique most efficiently, especially because it is frequently the case in practice that replica exchange si...

Designing collaborative software for mobile ad hoc networks presents news challenges : in a MANEt, devices are mobile, resources are scarce and because of an absence of infrastructure, everything is decentralized. Therefore, algorithms for collaborative application on wired networks cannot be used as is, and new algorithms, adapted to MANet, have to be defined. This thesis proposes a set of alg...

The statistical mechanics of a two-state Ising spin-glass model with finite random connectivity, in which each site is connected to a finite number of other sites, is extended in this work within the replica technique to study the phase transitions in the three-state Ghatak-Sherrington (or random Blume-Capel) model of a spin glass with a crystal-field term. The replica symmetry ansatz for the o...

This paper studies performance and timing failure probability of time-shifted redundant circuits and path-/circuit-replica circuits. Measurement-based experiments using a fabricated test chip are performed. For an approximately similar false positive error probability for the path-replica and circuit-replica, the false negative error probability of the circuit-replica is approximately two order...

The alternative to the replica procedure, which we call the noncommutative replica procedure, is discussed. The detailed comparison with the standard replica procedure is performed.

The alternative to the replica procedure, which we call the noncommutative replica procedure, is discussed. The detailed comparison with the standard EA replica procedure is performed.