Abstract: Due to the expansion of high voltage Alternating Current (AC) power transmission lines and cathodically protected buried pipelines, it is becoming more and more difficult to construct them with enough safe distances between them. Thus, the pipelines are frequently exposed to induced AC interferences, which result in perturbation of Cathodic Protection (CP) due to AC corrosion. To s...

Introduction: Low-rank modeling of local k-space neighborhoods (LORAKS) is a recent constrained MRI framework that can enable accurate image reconstruction from sparselyand unconventionally-sampled k-space data [1,2]. Specifically, Ref. [1] showed that the k-space data for MR images that have limited spatial support or slowly-varying image phase can be mapped into structured low-rank matrices, ...

Feedforward and multiple-feedback A/D converters offer high-resolution, but are susceptible to instability in the presence of capacitor tolerances in a corresponding switchedcapacitor (SC) hardware implementation. The hitherto A/D converters are usually based on, a) complementary signal and noise transfer functions, and/or b) unitcircle noise transfer function zeros. This paper is concerned wit...

This paper proposes a matrix converter based unified power quality conditioner (MC–UPQC) for mitigating power quality problems. This proposed system is a combination of unified power quality conditioner and matrix converter. The UPQC is a combination of back-toback connected series and shunt active filters through a dclink. Voltage disturbances and harmonics are compensated by series active fil...

Averaging networks suppress the random mismatch between the comparators in flash A/D converters (ADCs), but an analytical understanding does not exist, nor a method for optimal design. This paper unifies various forms of offset averaging and derives the optimum by treating the averaging network as a spatial filter. At the optimum, the offsets in terms of LSB are minimized with almost no loss in...

To improve the low speed performance of the direct torque control(DTC) system. The advantages of DTC method are combined with the advantages of the matrix converter based on space vector modulation technique. The design process of the neural network controller which generating the flux reference voltage vector and fuzzy controller which applying the torque reference voltage vector were represen...

OBJECTIVES The aim of this study was to evaluate the influences of reconstruction and attenuation correction on the differences in the radioactivity distributions in (123)I brain SPECT obtained by the hybrid SPECT/CT device. METHODS We used the 3-dimensional (3D) brain phantom, which imitates the precise structure of gray matter, white matter and bone regions. It was filled with (123)I soluti...