In this paper a general analytical solution is obtained to find stress distribution in a finite elastic plate with a circular or square hole subjected to arbitrary biaxial partial loading using modified boundary condition by assuming plane stress conditions. The method employed is based on solution of circular hole in finite rectangular plate. This plate is mapped to circular ones and the parti...

UNLABELLED The study shows a promising next-generation surgical option for the correction of moderate to high ametropia. Hole implantable collamer lens (ICL), STAAR Surgical, is a posterior chamber phakic intraocular lens with a central artificial hole. As yet, however, no long-term comparison of the clinical results of the implantation of ICLs with and without such a hole has hitherto been con...

An empirical model for forecasting solar wind speed related geomagnetic events is presented here. The model is based on the estimated location and size of solar coronal holes. This method differs from models that are based on photospheric magnetograms (e.g., Wang-Sheeley model) to estimate the open field line configuration. Rather than requiring the use of a full magnetic synoptic map, the meth...

We consider the problem of growing the largest supermassive black holes from stellar–mass seeds at high redshift. Rapid growth without violating the Eddington limit requires that most mass is gained while the hole has a low spin and thus a low radiative accretion efficiency. If, as was formerly thought, the black–hole spin aligns very rapidly with the accretion flow, even a randomly–oriented se...

Til ts pape r s u r v e y s severa l a p p r o a c h e s to s eman t t c -ne tw ,~ rk s e m a n t ics t ha t h a v e not p r e v i o u s l y been t rea ted ~n the AI or c o m p u t a t t o n a l l i ngu t s t t c s h t e r a t u r e , t h o u g h there ~s a large ptulu. ~)ph~cal h t e r a t u r e i n v e s t ) g a t i n g t hem m ~ m l e d e t a d . In p a r t t c u l a r , p r o F ~ n ~ o n a ...

Manufacturing anomalies introduced during machining of critical parts, although rare in occurrence, have become a significant cause of gas turbine disk cracking events in the aero-engine. These non-geometric anomaly types are usually different to those commonly targeted by current production NDI efforts. A European Union funded programme 'MANHIRP' has been set up to address this issue by introd...

We report the transition towards a type 1 Seyfert experienced by the classical type 2 Seyfert nucleus in NGC 7582. The transition, found at most 20 days from its maximum peak, presents a unique opportunity to study these rare events in detail. At maximum the Hα line width is of about 12000 km s−1. We examine three scenarios that could potentially explain the transition: capture of a star by a s...

We present a model for gamma-ray bursts (GRB’s) in which a stellar mass black hole acquires a massive accretion disk by merging with the helium core of its red giant companion. The black hole enters the helium core after it, or its neutron star progenitor, first experiences a common envelope phase that carries it inwards through the hydrogen envelope. Accretion of the last several solar masses ...