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Parsons S.,Imperial College London | Parsons S.,Queen Mary and Westfield College | Saffiotti A.,Roosevelt University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2014

We introduce a new application of qualitative models of uncertainty. The qualitative analysis of a numerical model of uncertainty reveals the qualitative behaviour of that model when new evidence is obtained. This behaviour canbe compared with an expert's specifications to identify those situations in which the model does not behave as expected. We report the result of experlments performed using a probability model, and a model based on the Dempster-Shafer theory of evidence.

Moloto M.J.,University of Johannesburg | Revaprasadu N.,University of Zululand | Kolawole G.A.,University of Zululand | O'Brien P.,University of Manchester | And 2 more authors.
E-Journal of Chemistry | Year: 2010

Two new cadmium(II) complexes CdCl2[CS(NHCH3)2]2 (1) and CdCl2(CS(NH2)NHC6H5) 4 (2) have been synthesized and characterized by spectroscopic and x-ray crystallographic methods. Both compounds are monomers in the solid state with the four and six coordinate and their coordination geometries based on distorted tetrahedron and distorted octahedron respectively. The thiourea ligands behave as monodentate in both compounds with the binding through sulfur. Complex (2) is one of the few examples of monomeric six coordinate Cd(II) complexes with four monodentate thiourea and two chloride ligands. The Cd-S bond proved useful as a source of preparing nanoparticles using these complexes as single source precursor at a temperature of 250 °C in trioctylphosphine oxide (TOPO).

Queen Mary And Westfield College | Date: 2010-04-28

The present invention provides isoquinoline, tetrahydroisoquinoline and tetrahydropyridopyrimidine compounds that induce cell death by apoptosis and uses of the compounds in medicine, especially their use for treating cancer and other diseases.

Adomeit J.,University of Hamburg | Amsler C.,University of Zurich | Armstrong D.S.,University of California at Berkeley | Armstrong D.S.,College of William and Mary | And 84 more authors.
European Physical Journal C | Year: 2011

Data on p̄p → ηπ0π0π0 taken at beam momenta of 1.2 and 1.94 GeV/c reveal evidence for two I = 0 JPC = 2-+ resonances in ηππ. The first, at 1645 ± 14(stat.) ± 15 (syst.) MeV with width 180 +40-21 ± 25 MeV, decays to a2(1320)π with L = 0. It may be interpreted as the qq̄ 1D2 partner of π2(1670). A strong signal is also observed just above threshold in f2(1270)η with L = 0. It is 11-22 times stronger than is expected for the high mass tail of the 1645 MeV resonance. It can be fitted as a second 2-+ resonance at 1875 ± 20 ± 35 MeV with width 200 ± 25 ± 45 MeV. A third resonance having JPC = 2++ is observed at 2135 ± 20 ± 45 MeV with Γ = 250±25±45 MeV, decaying to both a2(1320)π and f2(1270)η with L = 1. There is no evidence for resonances with decays to a0(980)π, Qη or f0(980)η. © Springer-Verlag 1996.

Zhou L.N.,Wuhan University | Cheng Y.J.,Wuhan University | Xu E.M.,Huazhong University of Science and Technology | Sterr U.O.,Queen Mary and Westfield College | And 2 more authors.
Electronics Letters | Year: 2011

A new high-Q infinite impulse response (IIR) microwave photonic filter is demonstrated, in which two active recirculating delay line loops based on a semiconductor optical amplifier (SOA) are cascaded. Due to cross-gain modulation in the SOA, interferences between light beams travelling along different paths are removed, ensuring stable operation and linearity of the electrical transfer function. The whole transfer function comprises a term representing a cascade response of two IIR filters, which significantly increases the free spectral range and the Q factor. The filter exhibits a Q factor of 1870 with a rejection ratio of 25dB. © 2011 The Institution of Engineering and Technology.

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