Benefiting from the ultra-wide bandwidth, terahertz (THz) communication is considered one of core technologies 6G mobile communication. However, high path loss a severe issue for THz band, which needs to be solved by ultra-massive multiple-input multiple-output (MIMO) technology. For sake reducing hardware cost and power comsumption, hybrid beamforming technology required, has been adopted in 5...

BACKGROUND The Early vs Late Infantile Strabismus Surgery Study Group investigates whether early or late surgery is preferable in infantile convergent strabismus, in a non-randomised, prospective, multicentre clinical trial. The current state of the study after end of recruitment is reported here, focusing on the question of possible sources for bias in this non-randomised trial. METHOD The p...

BACKGROUND /aims: Paediatric squint surgery appears to be declining. This study aims to identify if this is so and, if so, why. METHODS Retrospective review of (1) episodes of paediatric squint surgery in Scotland and Tayside, 1986-2001, (2) presentations to orthoptists (Tayside) during 1986 and 1996. RESULTS (1) Overall, a 58% fall in surgery in Scotland and 59% in Tayside. For esotropia, ...

The curvature $ of an electronematodynamic flow pattern obeys, in the steady state, the nonlinear equation $" + qZ $ t,h3 + b$$' = 0. The term $ $ I , called squint, is studied. Squint originates in the distortion torque and the distortion stress. Squint brakes the axial inversion symmetry of a simple flow roll but preserves the reflection symmetry of a roll pair. Flow patterns are predicted to...

Accurate channel parameter estimation is challenging for wideband millimeter-wave (mmWave) large-scale hybrid arrays, due to beam squint and much fewer radio frequency (RF) chains than antennas. This article presents a novel joint angle delay (JADE) approach mmWave fully-connected uniform cylindrical arrays. We first design new beamformer reduce the dimension of received signals on horizontal p...