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- Bassam Bamieh, Mihailo R. Jovanovic, Partha P. Mitra, Stacy Patterson
- IEEE Trans. Automat. Contr.
- 2012

—We consider distributed consensus and vehicular formation control problems. Specifically we address the question of whether local feedback is sufficient to maintain coherence in large-scale networks subject to stochastic disturbances. We define macroscopic performance measures which are global quantities that capture the notion of coherence; a notion of… (More)

- Stacy Patterson, Bassam Bamieh, Amr El Abbadi
- IEEE Trans. Automat. Contr.
- 2010

—We consider a distributed average consensus algorithm over a network in which communication links fail with independent probability. In such stochastic networks, convergence is defined in terms of the variance of deviation from average. We first show how the problem can be recast as a linear system with multiplicative random inputs which model link… (More)

- Stacy Patterson, Bassam Bamieh
- CDC
- 2010

— We consider the problem of leader-based distributed coordination in networks where agents are subject to stochastic disturbances, but where certain designated leaders are immune to those disturbances. Specifically, we address the effect of leader selection on the coherence of the network, defined in terms of an H2 norm of the system. This quantity… (More)

- Achour Mostéfaoui, Michel Raynal, Corentin Travers, Stacy Patterson, Divyakant Agrawal, Amr El Abbadi
- 24th IEEE Symposium on Reliable Distributed…
- 2005

A noteworthy advance in distributed computing is due to the recent development of peer-to-peer systems. These systems are essentially dynamic in the sense that no process can get a global knowledge on the system structure. They mainly allow processes to look up for data that can be dynamically added/suppressed in a permanently evolving set of nodes.… (More)

- Stacy Patterson, Bassam Bamieh, Amr El Abbadi
- CDC
- 2007

— We consider a distributed average consensus algorithm over a network in which communication links fail with independent probability. Convergence in such stochastic networks is defined in terms of the variance of deviation from average. We characterize the decay factor of the variance in terms of the eigenvalues of a Lyapunov-like matrix recursion. We give… (More)

We present a framework for concurrency control and availability in multi-datacenter datastores. While we consider Google's Megastore as our motivating example, we define general abstractions for key components, making our solution extensible to any system that satisfies the abstraction properties. We first develop and analyze a transaction management and… (More)

- Stacy Patterson, Yonina C. Eldar, Idit Keidar
- IEEE Transactions on Signal Processing
- 2014

We consider the problem of in-network compressed sensing from distributed measurements. Every agent has a set of measurements of a signal x, and the objective is for the agents to recover x from their collective measurements using only communication with neighbors in the network. Our distributed approach to this problem is based on the centralized Iterative… (More)

- S Patterson, L Klenerman, M Biswas, A Rhodes
- Acta orthopaedica Scandinavica
- 1981

The effect of 3- and 5-hour pneumatic tourniquets on skeletal muscle physiology was investigated. Maximum isometric tension development, contraction and half relaxation times were measured in the muscles lying immediately under and distal to the tourniquet. On release of the tourniquet no consistent difference between control and experimental muscles was… (More)

- T G Sommerkamp, M Seeman, +6 authors M Ezaki
- The Journal of bone and joint surgery. American…
- 1994

A prospective, randomized study was done to compare the results of dynamic external fixation (the Clyburn device) with those of static external fixation (the AO/ASIF device) in the treatment of fifty unstable fractures of the distal part of the radius. Mobilization of the wrist from neutral to 30 degrees of flexion was begun in the dynamic-fixator group at… (More)

- S Patterson, L Klenerman
- The Journal of bone and joint surgery. British…
- 1979

Experiments have been carried out on rhesus monkeys to determine the effect of the application of a pneumatic tourniquet on the ultrastructure of the muscles of the lower limb. Tourniquets were applied for periods lasting between one and five hours. The changes in the muscle lying immediately under the cuff of the tourniquet were more marked than those… (More)