نتایج جستجو برای: ovality

تعداد نتایج: 98  

Journal: :Signal Processing 2014
Pascal Chevalier Jean Pierre Delmas Abdelkader Oukaci

Widely Linear (WL) Minimum Mean Square Error (MMSE) estimation has received a great interest these last 20 years for second order (SO) noncircular signals. In the context of radio communications networks, it has been shown in particular that WL MMSE receivers allow to implement Single Antenna Interference Cancellation (SAIC) of one rectilinear interference, such as Binary Phase Shift Keying (BP...

Journal: :Sensors 2016
Xianpeng Wang Wei Wang Xin Li Qi Liu Jing Liu

In this paper, a novel sparsity-aware direction of arrival (DOA) estimation scheme for a noncircular source is proposed in multiple-input multiple-output (MIMO) radar. In the proposed method, the reduced-dimensional transformation technique is adopted to eliminate the redundant elements. Then, exploiting the noncircularity of signals, a joint sparsity-aware scheme based on the reweighted l1 nor...

Journal: :International Journal of Forest Engineering 2022

One method for estimating the solid wood content in a stack involves using conversion factors and multiplying these by measured gross volume. The can vary depending on several log parameters. aim of this study was to analyze eleven parameters 3D simulation model based 541 logs Norway spruce. To end, 50 data sets were created from logs, where interest (e.g., length, crookedness, taper …) classif...

Journal: :Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology 2011
Alexander Fürnkranz Feifan Ouyang

Cryoballoon pulmonary vein isolation (CB-PVI) is attractive for many electrophysiologists because the device allows in principle to isolate the pulmonary veins (PVs) with a single application and a short learning curve. In order to achieve an effective lesion, the cryoballoon must be positioned with good circumferential tissue contact at the PV ostium, usually ascertained by the absence of cont...

Journal: :Algorithms 2016
Weidong Zhou Jing Liu Pengxiang Zhu Wenhe Gong Jiaxin Hou

In this paper, a reweighted sparse representation algorithm based on noncircular sources is proposed, and the problem of the direction of arrival (DOA) estimation for multiple-input multiple-output (MIMO) radar with mutual coupling is addressed. Making full use of the special structure of banded symmetric Toeplitz mutual coupling matrices (MCM), the proposed algorithm firstly eliminates the eff...

2017
L. Malfait

Several studies have been published on the use of eccentric and non-circular chainrings. The findings of these studies have, however, not been consistent. Despite the lack of consistent positive results in terms of physiological responses, a consensus appears to prevail that the improved mechanical effectiveness of the oval chainring may lead to performance enhancement (e.g. increased crank pow...

Journal: :Eastern-European Journal of Enterprise Technologies 2021

Orbital pipe welding was often used to manufacture piping systems. In orbital welding, a major challenge is the torch’s position during process, so that additional methods are needed overcome these challenges. This paper discusses influence of sequence and current on distortion, mechanical properties metallurgical observations in with SS 316L square butt joints. The variation parameters sequenc...

Journal: :Processes 2023

Recent research papers have confirmed the prevalence of microorganisms resistant to numerous antimicrobial agents, leading spreading infections, extended hospitalizations, and increased mortality rates. The amplifying factors stimulate need discover new molecules able cut off developing resistance pathogens against medicines. current study presents a molecular docking procedure applied on 15 py...

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