In this paper, we study different methods of solving joint redundancy-availability optimization for series-parallel systems with multi-state components. We analyzed various effective factors on system availability in order to determine the optimum number and version of components in each sub-system and consider the effects of improving failure rates of each component in each sub-system and impr...

This papers describes an algorithm to estimate the precise position of facade planes in digital surface models (DSM) reconstructed from aerial images using an image-based optimization method which exploits the redundancy of the data set (along and across track overlap). This approach assumes that a facade is a vertical plane and that the heightfield is precise enough to generate hypotheses for ...

Peer-to-peer storage aims to build large-scale, reliable and available storage from many small-scale unreliable, low-availability distributed hosts. Data redundancy is the key to any data guarantees. However, preserving redundancy in the face of highly dynamic membership is costly. We apply a simple resource usage model to measured behavior from the Gnutella file-sharing network to argue that l...

xvi Chapter 1: Introduction, Background and Prior Work 1 1.1 Motor Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Muscle Fatigue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3 Experimental Evidence: Leveraging Muscle Redundancy for Fatigue Mitigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.4 Modeling and Simulation: Musc...

Slow running or straggler tasks can significantly reduce computation speed in distributed computation. Recently, coding-theory-inspired approaches have been applied to mitigate the effect of straggling, through embedding redundancy in certain linear computational steps of the optimization algorithm, thus completing the computation without waiting for the stragglers. In this paper, we propose an...

In this work, water distribution systems are regarded as large sparse planar graphs with complex network characteristics and the relationship between important topological features of the network (i.e. structural robustness and loop redundancy) and system resilience, viewed as the antonym to structural vulnerability, are assessed. Deterministic techniques from complex networks and spectral grap...

One of the primary concerns in any system design problem is to prepare a highly reliable system with minimum cost. One way to increase the reliability of systems is to use redundancy in different forms such as active or standby. In this paper, a new nonlinear multi- objective integer programming model with the choice of redundancy strategy and component type is developed where standby strategy ...

There exist in robotics, as in many other disciplines, problems described by an underdetermined set of constraints, possessing an infinite number of solutions. The problem of robot manipulator redundancy resolution is just such a situation, requiring that a particular solution be chosen according to some type of optimization criterion. One possibility employs a type of optimization which minimi...

Firewall is a typical security system that extensively secures the private networks. The operation of a firewall is to analyze every packet and decide whether to accept or discard it based upon the firewall policy. This policy is specified as a set of rules. The work focuses on inter-firewall optimization over distinct administrative domain without exploiting the privacy policies. With the mass...