In this paper, we study the problem of channel assignment for wireless networks modelled as d-dimensional grids. In particular, for d-dimensional square grids, we present optimal assignments that achieve a channel separation of 2 for adjacent stations where the reuse distance is 3 or 4. We also introduce the notion of a colouring schema for ddimensional square grids, and present an algorithm th...

CRLM (red square); (B,C) The corresponding T1W images obtained before (B) and 66 sec after (C) i.v. injection of Gd-DTPA; The suspected lesion was not enhanced with DCE-MRI (B, enlarged square), despite the injection success as the whole liver was enhanced (C). In the corresponding HRI maps (D-ΔSo2 map; E-ΔSco2 map), the suspected CRLM were clearly highlighted (D,E circles). Bar=1 cm in A and a...

We examine extended bound states in the dilute limit of the extended Hubbard model with next-nearest-neighbour (nnn) hopping and nnn interaction on the two dimensional square lattice. By the exact solution of a two-body problem we show that d-wave pairing is strongly favored by the nnn hopping. We determine the binding energies, mobilities and dispersion curves across Brillouin zone (B.z.) for ...

The critical two-terminal conductance gc and the spatial fluctuations of critical eigenstates are investigated for a disordered two dimensional model of non-interacting electrons subject to spin-orbit scattering (Ando model). For square samples, we verify numerically the relation σc = 1/[2π(2−D(1))] e /h between critical conductivity σc = gc = (1.42 ± 0.005) e /h and the fractal information dim...

The paper deals with polynomial interpolation, least-square approximation and cubature of functions defined on the rectangular cylinder, K = D × [−1, 1], with D the unit disk. The nodes used for these processes are the Approximate Fekete Points (AFP) and the Discrete Leja Points (DLP) extracted from suitable Weakly Admissible Meshes (WAMs) of the cylinder. ¿From the analysis of the growth of th...

We discuss D-dimensional scalar field interacting with a scale invariant random metric which is either a Gaussian field or a square of a Gaussian field. The metric depends on d dimensional coordinates (where d < D). By a projection to a lower dimensional subspace we obtain a scale invariant non-Gaussian model of Euclidean quantum field theory in D − d or d dimensions.

Purpose. To compare the surgically induced astigmatism from clear corneal and square posterior limbal incisions at the time of cataract surgery. Methods. Surgically induced astigmatism was calculated for a set of eyes after cataract surgery using a temporal 2.2 mm square posterior limbal incision. Results were compared to similar available data from surgeons using clear corneal incisions of sim...

I. OLARIU, G. CONEAC, L. VLAIA, V. VLAIA, D. F. ANGHEL, C. ILIE, C. POPOIU, D. LUPULEASA ”Victor Babeş” University of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Technology, Eftimie Murgu Square 1, 300041, Timişoara, Romania “Victor Babeş” University of Medicine and Pharmacy, Faculty of Pharmacy, Department of Organic Chemistry, Eftimie Murgu Square 1, 300041, Timiş...