In this paper, we propose a model-based procedure to calibrate and validate Sentinel-1 orbit products by the Multi-Squint (MS) phase. The technique allows to calibrate an interferometric pair geometry by refining the slave orbit with reference to the orbit of a master image. Accordingly, we state the geometric model of the InSAR phase as function of positioning errors of targets and slave track...

THE earliest sign in progressive muscular dystrophy of involvement of the extraocular muscles is usually a bilateral ptosis which is followed by slowly progressing immobility of the eyes. The central nervous system as well as the skeletal muscles may be affected. Furthermore, heart disorders have been reported. At present, the disorder is attributed to progressive dystrophy of the extra-ocular ...

A survey of health districts in England and Wales was carried out at the end of 1984 to ascertain among other things the range of current programmes for preschool vision screening. The response rate was 81.3%. Altogether 94% of districts reported screening for both reduced visual acuity and squint; two districts screened for neither. A great variety of different types of tests were in use and s...

The zebrafish EGF-CFC gene one-eyed pinhead (oep) is required zygotically for the formation of the ventral neuroectoderm, endoderm, and prechordal plate. Here we report that embryos lacking both maternal and zygotic Oep activity are defective in germ layer formation, organizer development, and the positioning of the anterior-posterior axis. An identical phenotype is displayed by double mutants ...

All operations were performed under general anaesthesia using a limbal approach to the insertions of the muscles, similar to that recently described by Fells (I97 i). The 6/o Ethiflex suture was then used in the standard manner employing a "whip" stitch on the edge of each muscle. At the moment the suture is presented with a io-mm. taper-point needle. This is not ideal, but no problems, apart f...

The combination of large bandwidth at terahertz (THz) and the number antennas in massive MIMO results non-negligible spatial wideband effect time domain or corresponding beam squint issue frequency domain, which will cause severe performance degradation if not properly treated. In particular, for a phased array based hybrid transceiver, there exists contradiction between requirement mitigating ...