This study compares the efficiency of 3-D transient electromagnetic forward modeling schemes on multi-resolution grid for various scenarios. We developed time-domain finite-difference based explicit scheme earlier. In this work, we additionally implement using backward Euler implicit scheme. The iterative solver is used solving system equations and requires a proper initial guess that has signi...

Bad-metal (BM) behavior featuring linear temperature dependence of the resistivity extending to well above the Mott-Ioffe-Regel (MIR) limit is often viewed as one of the key unresolved signatures of strong correlation. Here we associate the BM behavior with the Mott quantum criticality by examining a fully frustrated Hubbard model where all long-range magnetic orders are suppressed, and the Mot...

Abstract Subvolcanic hydrothermal systems can lead to eruptions as well unrest phenomena without an eruptive event. Historical and recent events, including ground inflation, demagnetization, a gradual decrease in the plume height, at Mt. Tokachidake, central Hokkaido, Japan, are related such subvolcanic system. This study investigates three-dimensional (3-D) resistivity structure of Tokachidake...

In previous work on undoped MFe(2)As(2), partial drops in the resistivity indicative of traces of superconductivity have been observed for some samples with M =  Ba (T(c)∼20 K, up to 25% drop in ρ) and M =  Ca (T(c)∼10 K, up to 45% drop in ρ). A complete drop in the resistivity to ρ = 0, along with a finite fraction of Meissner flux expulsion, has been observed for M  = Sr, T(c) = 22 K. Using I...

The electrical resistivity of Co/Ni and Cu/Ni superlattices exhibit resistivity oscillations as a function of superlattice period L, while Ag/Pd does not. Moreover, the resistivity of Co/Ni superlattices shows quantum size effects and a resistivity enhancement with L, as a function of total film thickness d . These results are consistent with a model which assumes d-electron localization in the...

Abstract This study was carried out with a view to establishing routine for the selection of optimum electrode spacing accurate measurement resistivity within unusually thin (5–100 cm) subsurface layer in agro geophysics. The Hummel’s image theory 2-Layer Wenner Vertical Electrical Sounding (VES) formed theoretical basis study. For purpose simulation, computer program developed using theory. si...

there are some evidences on elamite seals that show iranian people had enough knowledge to construct small dome on cylindrical spaces like silo in the third millennium bc. but the foundations of large dome over square spaces were formed in the parthian period. bazeh-hur dome chamber with the corners of wood in khorasan province is the most ancient dome from the sasanian dynasty. since the sasan...

Executive Summary This document reports the successful completion of the OFES Theory Milestone for FY2006: Increase resolution in simulations of macroscopic plasma edge phenomena. Optimizing confinement and predicting the behavior of burning plasmas require improved simulations of edge and core plasma phenomena, as the characteristics of the edge can strongly affect core confinement. For this q...