Pulse width modulation strategies have been developed for indirect matrix converters (IMCs) in order to improve their performance. In indirect matrix converters, the LC input filter is used to remove input current harmonics and electromagnetic interference problems. Unfortunately, due to the existence of the input filter, the input power factor is diminished, especially during operation at low ...

Standard JPEG decompression reconstructs quantized DCT coefficients to the center of the quantization bin. This fails to exploit the nonuniform distribution of the AC coefficients. Assuming a Laplacian distribution, we derive a maximum likelihood estimate of the Laplacian parameter, based on the quantized coefficients available at the decoder, and use this estimate to optimally bias the reconst...

Based on the concept of losslessness in digital filter structures, this paper derives a general class of maximally decimated Mchannel quadrature mirror filter hanks that lead to perfect reconstrnction. The perfect-reconstruction property guarantees that the reconstructed signal f ( a ) is a delayed version of the input signal x (n), i.e., 2 ( n ) = n ( n a,,). It is shown that such a property c...

Frequency differential magnetic induction tomography allows the reconstruction of images of relative conductivity spectra with the aid of magnetic AC fields and coil arrays. While the technique works well at high frequencies (> 1 MHz) the induced voltages due to physiological conductivities are very low in the β-dispersion range of most tissues. Even when using special cancellation techniques f...

Journal of Medical Sciences 2011;14(2):68-70 expression for CD99 (MIC2), with characteristic membranous pattern and an IMPRESSION drawn was Conformation of diagnosis of EWINGS SARCOMA. Bone Scan was also advised which revealed Reduced uptake over the body of left mandible without rim of enhanced uptake. No evidence of distal bone involvement. A surgical procedure was performed to resect the mal...

Comprehensive characterization of ultrafast optical field is critical for ultrashort pulse generation and its application. This paper combines two-step phase-shifting (TSPS) into the spectral phase interferometry for direct electric-field reconstruction (SPIDER) to improve the reconstruction of ultrafast optical-fields. This novel SPIDER can remove experimentally the dc portion occurring in tra...

In this contribution we describe the second run of RSD (Resistive AC-Coupled Silicon Detectors) designed at INFN Torino and produced by Fondazione Bruno Kessler (FBK), Trento. are n-in-p detectors intended for 4D particle tracking based on LGAD technology that get rid any segmentation implant in order to achieve 100% fill-factor. They characterized three key-elements, (i) a continuous gain impl...

Background: The aim of the current study is to evaluate the technique of reconstruction of Acromioclavicular (AC) joint dislocation using tendon autograft (semitendinosus) and to assess clinical, radiographic results and complications associated with this procedure. Methods: This is a prospective study was conducted on 20 patients with 20 dislocations from May 2013 till March 2014 including pat...

In this paper, a new step-up/step-down AC-AC converter is designed by switched capacitor (SC) techniques. The main features of the proposed SC AC-AC converter are the symmetrical converter topology and the absence of magnetic elements. Owing to the symmetrical converter topology, the number of capacitors in the proposed AC-AC converter is fewer than that in the conventional SC AC-AC converter. ...