In this paper we investigate some existence questions of positive semi-definite solutions for certain classes of matrix equations known as the generalized Lyapunov equations. We present sufficient and necessary conditions for certain eq...

The synthesis of several-bioisosteric analogs based on the 3-OH-phenoxyethylamine dopamine D2 agonist template (i.e., 3) is described. The benzimidazol-2-ones and benzthioimidazol-2-ones (7–10) and 2-trifluoromethyl-benzimidazole (13)...

We discuss the trade-off between sampling and quantization in signal processing for the purpose of minimizing the error of the reconstructed signal subject to the constraint that the digitized signal fits in a given amount of memory. Fo...

Two stochastic population models, a birth-and-death model and a stochastic difference equation model, are compared, using data for a giant-Canada-goose population. The quasistationary probability distribution predicted by the stochastic...

Measurements have been carried out on bulk zinc and brass between room temperature and 1.2°K. The susceptibility values of Zn agree with those of other authors. The diamagnetic brass becomes paramagnetic at low temperatures. This param...

The balance of CD4+ and CD8+ T cells in humans is controlled by a major autosomal gene. Here, Alberto Amadori and colleagues propose that in view of the high CD4+ cell turnover during HIV infection, individuals genetically predisposed t...

The lead and nickel contents of freeze-dried samples of human milk were determined. Lead was quantified by electrothermal atomic absorption spectrometry and nickel was measured by inductively-coupled plasma emission spectrometry with el...

The resolvent operator is used to define many-time thermodynamic Green functions, the equations of motion of which are thus shown equivalent to identities based on that operator. An alternative method for calculating the many-time Green...

In this paper we prove that there is a large family of topologically weakly mixing homeomorphisms of the Klein bottle that are uniformly rigid. We do this by viewing the Klein bottle as the quotient of the two-torus by an appropriate gr...

The k most vital arcs in a network are those whose removal Ghd Hair Dryer from the network results in the greatest increase in the shortest distance between two specified nodes. An exact algorithm is proposed to determine the k most vit...

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