purpose: to compare the effect of implantation of a single-piece hydrophilic foldable acrylic intraocular lens (iol) with rectangular optic edge and a single-piece polymethyl methacrylate (pmma) iol with rounded optic edges on posterior capsular opacification )pco(. methods: this randomized clinical trial study comprised 74 eyes with senile cataract in an otherwise normal eye in patients older ...

The majority of up-to-date conceived composite right-handed / left-handed (CRHLH) transmission lines (TL) are open configurations derived from microstrip technology. We present here a closed CRHLH architecture derived from the H10 rectangular hollow waveguide mode, which is realised in substrate-integrated waveguide (SIW) technology and is thus easy to fabricate. The dispersion characteristic i...

A new numerical technique is proposed for analyzing arbitrary shaped hollow waveguides. The method is based on mathematically modelling of physical response of a system to excitation over a range of frequencies. The response amplitudes are then used to determine the resonant frequencies. The results of the numerical experiments justifying the method are presented. The method is validated by cir...

On a two-dimensional cake, there are m pairwise-disjoint toppings. It is required to cut the cake to m + b pieces, such that each topping is entirely contained in a unique piece, and the total number of empty pieces (b, ”blanks”) is minimized. The minimal number of blanks naturally depends on the geometric constraints of the cake and its pieces. I present tight bounds on the number of blanks wh...

Piece Work Pay and Hourly Pay over the Cycle This paper investigates the relative cyclical behavior of the pay of piece workers and hourly paid workers. It uses a unique data set of blue-collar workers in British engineering between 1926 and 1966. The statistics are obtained from the payrolls of firms belonging to the Engineering Employers Federation (EEF). Roughly, the EEF accounted for one-th...

This article presents a theoretical and numerical study of bolted sleeve connections with rectangular hollow sections (RHS) under axial tension compression. The geometric form section provides resistance for high loads, torsion combines effects, spreading its utilization in truss systems. In this context, the proposed explore these characteristics RHS offer an attractive aesthetic appearance co...