In this paper, we develop widely linear transmit strategies for two-way relaying networks with single or multiple pairs of users and a MIMO amplify and forward relay. By taking advantage of the noncircularity of the complex-valued transmitted signals, a significant performance gain is obtained over linear transmit strategies when SNR balancing or relay transmit power minimization is chosen as t...

The analysis of the ring rolling machine capabilities in providing increased accuracy blanks is performed. necessity operator’s participation controlling to achieve required even with full automation manufacturing process noted. cooling circular after ensure has been To eliminate ovality low rigidity mill it proposed use technology their controlled and stabilization. sequence thermal strain con...

Historically square or almost spacing design has been used in plantation forest, as it claimed to maximize productivity. In this study, based on field experiments established the mid-1980s, we tested effect of different rectangular planting designs (2 × 2, 1.33 3, 1 4, 0.8 5, 1.46 4 m) productivity, stand heterogeneity, and external wood properties three coniferous species: Scots pine, Lodgepol...

A novel method for distributed estimation of the frequency of power systems is introduced based on the cooperation between multiple measurement nodes. The proposed distributed widely linear complex Kalman filter (D-ACKF) and the distributed widely linear extended complex Kalman filter (D-AECKF) employ a widely linear state space and augmented complex statistics to deal with unbalanced system co...

The objective of this study was to investigate the performance pipelines repaired with carbon-fibre-reinforced polymer (CFRP) under external pressure. pipeline experienced defects in terms thinning its local inner wall. three-dimensional finite element method used analyse collapse pressure pipes internal corrosion defects. traction–separation law and interlaminar damage criterion were applied s...

The influence that parameters crookedness and taper have on the stack volume was analyzed by using a 3D-simulation model in this study. To do so, log length, diameters at midpoint both ends, crookedness, bark thickness, ovality were measured 1000 logs of Scots pine. From database, several data sets with different proportions crooked tapered as well degrees created taken basis to simulate stacks...

Cryoballoon ablation (CBA) has been widely accepted as a major technic for pulmonary vein isolation (PVI) in patients with atrial fibrillation (AF). PV anatomy is an important factor to obtain circumferential balloon adhesion that results occlusion achieve acute PVI. The KODEX-EPD (Philips, Amsterdam, Netherlands) dielectric-based electroanatomic mapping system can display panoramic (PANO) view...

In this paper, the response surface methodology (RSM) and finite element (FE) simulation were applied to optimize push-bending process parameters of thin-walled tube with polyurethane mandrel. The objective present work is predict optimal set including length diameter ratio mandrel (L/D), friction coefficient between die ( $${\mu }_{1}$$ ), }_{2}$$ Poisson’s $$\upsilon$$ ) obtain qualified bent...

In this paper, a novel two-dimensional (2D) direction-of-arrival (DOA) estimation algorithm for the mixed circular and strictly noncircular sources is proposed. A general array model with a mixture of signals is firstly built based on uniform rectangular arrays (URAs), and then, the approach, which uses the rank-reduction-based ROOT-MUSIC, can solve 2D DOA estimation problem. Besides, the theor...