5,259 research outputs found
A comparison of Landau-Ginzburg models for odd-dimensional Quadrics
No full textIn [Rie08], the second author defined a Landau-Ginzburg model for homogeneous spaces G/P, as a regular function on an affine subvariety of the Langlands dual group. In this paper, we reformulate this LG model (X^, W_t) in the case of the odd-dimensional quadric, as a rational function on a Langlands dual projective space, in the spirit of work by R. Marsh and the second author for type A Grassmannians and by both authors for Lagrangian Grassmannians. We also compare this LG model with the one obtained independently by Gorbounov and Smirnov, and we use this comparison to deduce part of a conjecture of the second author for odd-dimensional quadrics
A comprehensive investigation of memory impairment in attention deficit hyperactivity disorder and oppositional defiant disorder
No full textWe conducted a comprehensive and systematic assessment of memory functioning indrug-naïve boys with attention deficit hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD). Boys performed verbal and spatial working memory (WM) component (storage and central executive) and verbal and spatial storage load tasks, and the spatial span, spatial executive WM, spatial recognition memory and verbal recognition memory tasks from the Cambridge Neuropsychological Test Automated Battery. Groups comprised: (a) ADHD only (N = 21); (b) ADHD+ODD (N = 27); (c) ODD only (N = 21); and (d) typically developing (TYP) boys (N = 26). Groups were matched for age (M = 9.7 years) and sex (all boys). Confirmatory factor analyses confirmed the presence of five factors: verbal functioning, spatial functioning, WM storage, WM central executive and long-term memory (LTM). All three clinical groups demonstrated impaired memory performance. Boys with ODD and ODD+ADHD but not ADHD alone performed poorly on verbal memory tasks, whilst all three clinical groups showed impaired performance on spatial memory tasks. All three clinical groups performed poorly on the storage and central executive WM factors and the LTM factor. ADHD and ODD are characterised by impaired performance storage and central executive WM tasks and LTM tasks. This is, we believe, the first report of impaired WM and LTM performance in ODD. This study suggests that verbal memory difficulties are more closely associated with ODD than ADHD symptoms and that combined ADHD+ODD represents a true comorbidity. The data also support a small but growing number of suggestions in the literature of impaired LTM in ADHD
Even-odd harmonics generated from above-threshold ionization
No full textWe are reporting a theoretical prediction: The photoelectrons forming above-threshold-ionization (ATI) peaks emit both even and odd harmonics. These harmonics exhibit plateau and cut-off features similar to those odd-only harmonics observed in ATI experiments
Odd Fellows Association
No full textPhotograph - Members of the Odd Fellows association standing in front of a building, Athabasca, Alberta. The Odd Fellows was established in Athabasca in 191
Odd and Even Numbered Ferric Wheels
No full textThe structurally related odd and even numbered wheels [FeIII11ZnII4(tea)10(teaH)1(OMe)Cl8] (1) and [FeIII12ZnII4(tea)12Cl8] (2) can be synthesized under ambient conditions by reacting FeIII and ZnII salts with triethanolamine (teaH3), the change in nuclearity being dictated by the solvents employed. Antiferromagnetic exchange between nearest neighbours, J = -10.0 cm-1 for 1 and J = -12.0 cm-1 for 2, leads to a frustrated S = 1/2 ground state in the former and an S = 0 ground state in the latter
Monoidality of Franke's exotic model
No full textWe discuss the monoidal structure on Franke's algebraic model for the K_{(p)} -local stable homotopy category at odd primes and show that its Picard group is isomorphic to the integers
New partition identities for odd W odd
No full textIn this note we conjecture Rogers-Ramanujan type colored partition identities for an array Nwodd with odd number of rows w such that the first and the last row consist of even positive integers. In a strange way this is different from the partition identities for the array Nw with odd number of rows w such that the first and the last row consist of odd positive integers - the partition identities conjectured by S. Capparelli, A. Meurman, A. Primc and the author and related to standard representations of the affine Lie algebra of type Cl(1) for w = 2l + 1. The conjecture is based on numerical evidence
Pair dynamics of active force dipoles in an odd-viscous fluid
No full textWe discuss the lateral dynamics of two active force dipoles, which interact with each other via hydrodynamic interactions in a thin fluid layer that is active and chiral. The fluid layer is modeled as a two-dimensional (2D) compressible fluid with an odd viscosity, while the force dipole (representing an active protein or enzyme) induces a dipolar flow. Taking into account the momentum decay in the 2D fluid, we obtain analytically the mobility tensor that depends on the odd viscosity and includes nonreciprocal hydrodynamic interactions. We find that the particle pair shows spiral behavior due to the transverse flow induced by the odd viscosity. When the magnitude of the odd viscosity is large as compared with the shear viscosity, two types of oscillatory behaviors are seen. One of them can be understood as arising from closed orbits in dynamical systems, and its circular trajectories are determined by the ratio between the magnitude of the odd viscosity and the force dipole. In addition, the phase diagrams of the particle dipolar angles are obtained numerically. Our findings reveal that the nonreciprocal response leads to complex dynamics of active particles embedded in an active fluid with odd viscosity
A characterisation of the lines external to a quadric cone in PG(3,q), q odd
No full textIn this article, the lines not meeting a quadric cone in PG(3, q) (q odd) are characterised by their intersection properties with points and planes.Susan G. Barwick, David K. Butle
Odd craft /
No full textBound in original red cloth with binding design by Will Owen on front cover.Publisher's advertisement [5 p.] at end.List of author's works on verso of title page.Publisher's device on title page.The David Magee Collection of Edwardian Literature.The money box. - The castaway. - Blundell's improvement. - Bills's lapse. - Lawyer Quince. - Breaking a spell. - Establishing relations. - The changing numbers. - The persecution of Bob Pretty. - Dixon's return. - A spirit of averice. - The third string. - Odd charges. - Admiral Peters.Mode of access: Internet
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