To present an empirical test of the effectiveness of electricity restructuring in improving the electricity generation efficiency, I analyze the variation in productivity of 73 investor-owned nuclear power plants in the United States from 1992-1998. I find consistent evidence that high-cost plants are more likely to be restructured. Accounting for this policy endogeneity, survival analysis and two-stage least squares are used to implement a "pseudo" randomization process to create exogenous variation in regulatory status. Overall, I find striking relationship exists between restructuring and the efficiency improvements, and that some efficiency gains have come about from the adoption in advanced technology.

We demonstrate the synthesis of 2D metal nanoparticles (MNPs)/graphene nanocomposites using small cationic surfactants as stabilizers. 2D sandwich-like MNPs/graphene nanocomposites with a uniform distribution of MNPs can be achieved via a one-pot in situ growth and reduction protocol.

Abstract. We establish algebraically and geometrically a duality between the IwahoriHecke algebra of type D and two new quantum algebras arising from the geometry of N -step isotropic flag varieties of type D. This duality is a type D counterpart of the Schur-Jimbo duality of type A and the Schur-like duality of type B/C discovered by Bao-Wang. The new algebras play a role in the type D duality similar to the modified quantum gl(N ) in type A, and the modified coideal subalgebras of quantum gl(N ) in type B/C. We construct canonical bases for these two algebras.

Abstract. We establish direct connections at several levels between quantum groups and supergroups associated to bar-consistent anisotropic super Cartan datum by constructing an automorphism (called twistor) in the setting of covering quantum groups. The canonical bases of the halves of quantum groups and supergroups are shown to match under the twistor up to powers of √ −1. We further show that the modified quantum group and supergroup are isomorphic over the rational function field adjoined with √ −1, by constructing a twistor on the modified covering quantum group. An equivalence of categories of weight modules for quantum groups and supergroups follows.Le plus court chemin entre deux vérités dans le domaine réel passe par le domaine complexe.-Jacques Hadamard

No abstract

The quantum groups of finite and affine type A admit geometric realizations in terms of partial flag varieties of finite and affine type A. Recently, the quantum group associated to partial flag varieties of finite type B{C is shown to be a coideal subalgebra of the quantum group of finite type A. In this paper we study the structures of Schur algebras and Lusztig algebras associated to (four variants of) partial flag varieties of affine type C. We show that the quantum groups arising from Lusztig algebras and Schur algebras via stabilization procedures are (idempotented) coideal subalgebras of quantum groups of affine sl and gl types, respectively. In this way, we provide geometric realizations of eight quantum symmetric pairs of affine types. We construct monomial and canonical bases of all these quantum (Schur, Lusztig, and coideal) algebras. For the idempotented coideal algebras of affine sl type, we establish the positivity properties of the canonical basis with respect to multiplication, comultiplication and a bilinear pairing. In particular, we obtain a new and geometric construction of the idempotented quantum affine gl and its canonical basis.

We show the positivity of the canonical basis for a modified quantum affine $\mathfrak{sl}_n$ under the comultiplication. Moreover, we establish the positivity of the i-canonical basis in [21] with respect to the coideal subalgebra structure.

No abstract