This paper studies asymmetric power assignments for various network topologies under the kresilience criterion in static and dynamic geometric settings. We aim to minimize the total energy consumption, which is usually NP-hard for a desired link topology. We develop a general approximation framework for various topology control problems under the k-fault resilience criterion in the plane. We us...

Fault injection has become over the years one of the most dangerous threats for embedded devices such as smartcards. It is thus mandatory for any embedded system to implement efficient protections against this hazard. Among the various countermeasures suggested so far, the idea of infective computation seems fascinating, probably due to its aggressive strategy. Originally conceived to protect a...

Switched reluctance motors are tremendously increasing in usage. Monitoring the motor performance online is essential, in order to maintain the health of the motor as well as for a continual application process carried out by the SRM. Though certain fault detection methods are available based on comparator circuits, those methods are inefficient, because they need human attention to identify th...

We propose a new hybrid fault model for clock synchronization and single-round (approximate) agreement in synchronous distributed systems1, which accurately captures both node and link faults. Unlike conventional “global” fault models, which rest upon the total number of faulty nodes in the system, it solely relies upon the number of faults in any two non-faulty nodes’ “perceptions” —conveyed b...

Deliberate injection of faults into cryptographic devices is an effective cryptanalysis technique against symmetric and asymmetric encryption algorithms. To protect cryptographic implementations (e.g. of the recent AES which will be our running example) against these attacks, a number of innovative countermeasures have been proposed, usually based on the use of space and time redundancies (e.g....

Transform faults at mid-ocean ridges--one of the most striking, yet enigmatic features of terrestrial plate tectonics--are considered to be the inherited product of preexisting fault structures. Ridge offsets along these faults therefore should remain constant with time. Here, numerical models suggest that transform faults are actively developing and result from dynamical instability of constru...

Here we report the wet-chemical synthesis of asymmetric one-dimensional (1D) silver "nanocarrot" structures that exhibit mixed twins and stacking fault domains along the <111> direction. Oriented attachment is the dominant mechanism for anisotropic growth. Multipolar plasmon resonances up to fourth order were measured by optical extinction spectroscopy and electron energy-loss spectroscopy (EEL...

We apply a symmetry-based, statistical method for kine­ matic analysis of mesoscale fault-zone structures to resolve the trans­ port directions for the Rosario fault zone and Lopez StructuralCom­ plex in the San Juan Islands. Both moderately dipping fault zones accommodated large amounts of Late Cretaceous slip ( > 30 km), but the transport direction of nappes overlying these fault zones is con...