This paper offers a brief introduction to silicon photonics including the basic optical waveguide, passive optical circuit performance, the addition of doped pand njunctions adjacent to the intrinsic silicon waveguide to inject a current across the waveguide, free-carrier dispersion, performance of the variable optical attenuator (VOA), and a monolithic, dual-function splitter-VOA array circuit.

This paper is a shortened exposition of the theory of shrinkings, with particular emphasis on the relations between shrinkings and geometries at infinity or affine expansions. To make things easier, we shall only consider locally affine geometries, referring the reader to [A. Pasini, C. Wiedorn, Local parallelisms, shrinkings and geometries at infinity, in: A. Pasini (Ed.), Topics in Diagram Ge...

The paper describes a new model of MPEG-4 AVC/H.264 encoders. The model is proposed as a formula that expresses the number of bits per frame against the quantization step. Proposed are variants of the model for I-, Pand B-frames as well as for 3 intervals of quantization step values. The model has been derived from an extensive set of experimental data obtained by encoding numerous standard tes...

The channel throughput for a finite number of packet broadcasting users is analyzed for random access protocols, including slotted persistent carrier sense multiple access (CSMA) with and without collision detection and unslotted persistent CSMA with and without collision detection. We consider both pand 1-persistent CSMA. Our results can be extended to infinite population cases (by taking the ...

The association scheme of quadratic forms (or the quadratic forms scheme, for short) is one of the known Pand Q-polynomial schemes and its first eigenmatrix is represented by using the Askey-Wilson polynomials. We consider two fission schemes of the quadratic forms scheme in characteristic 2 and describe the first eigenmatrix of one of these fission schemes, and compute some intersection number...

In this note, we give an alternative proof of the following result. Let p, q ≥ 2 be two multiplicatively independent integers. If an infinite set of integers is both pand q-recognizable, then it is syndetic. Notice that this result is needed in the classical proof of the celebrated Cobham’s theorem. Therefore the aim of this paper is to complete [13] and [1] to obtain an accessible proof of Cob...

After 6 weeks of treatment with 17;6-estradiol, two distinct groups of female NZB/ NZW mice were identified. Group I females developed significant increases in serum f f 2 , pand y-globulins and had few serologic abnormalities. Serum globulins did not increase in Group I1 females. This blunted response correlated with a pretreatment increase in the frequency of positive tests for ANA, LE phenom...

Quantum Chromodynamics (QCD) predicts that topological charge changing transitions will take place in hot quark matter. Such transitions induce Pand CP-violating effects. We will show that in the presence of a magnetic field these transitions can separate quarks according to their electric charge along the direction of the magnetic field. This is the so-called Chiral Magnetic Effect. We will ar...