abstract : Matrix clocks have nice properties that can be used in the context of distributed database protocols and fault tolerant protocols. Unfortunately, they are costly to implement, requiring storage and communication overhead of size O(n 2) for a system of n sites. They are often considered a non feasible approach when the number of sites is large. In this paper, we rstly describe an eeci...

Seismic reflection profiles, drill-hole data, and geologic maps delimit the form of normal faults and Tertiary sedimentary rocks in the southern half of the Cache Valley basin in northern Utah. Dips of faults and sedimentary rocks were estimated from time-migrated reflection profiles by using the stacking velocities for the data. At the southern end of the basin, the East Cache fault zone is li...

Image logs of 13 wells in the Rag Sefid Anticline show two systems of fractures developed under two deformation phase in the Dezful Embayment. This deformation phases are folding resulted from Zagros NE contraction and reactivation of the basement fault rotated the fold axial trace within the Hendijan-Izeh fault zone. Folding phase comprises four sets of fractures, which include axial and cross...

The lining structure of Tunnel Boring Machine (TBM) excavated tunnels is composed of series of precast Reinforced Concrete (RC) pieces which are called segment. At the present paper, a novel method is introduced for seismic retrofitting of segmental tunnels located at active fault zones in rock environment with case study of Amirkabir dam to Tehran water transfer tunnel (Karadj tunnel). The mai...

This paper presents a procedure to obtain patterns from propagating signals in a SSSC FACTS device. The acquired patterns are suitable for neural network relay protection schemes for Fault Detection (FD), Phase Classification (PC) and Fault Zone Estimation (FZE). By considering two fault scenarios, the patterns are obtained through digital simulations which include effects of transducers and no...

A finite element method with constrained elements and Lagrange multipliers is used to study tectonic faults in a viscous medium. A fault, representing the interface between overriding and subducting plates, has been incorporated into a viscous flow model of a subduction zone in which both thermal buoyancy and the buoyancy associated with the phase change from olivine to spinel are included. The...