257,500 research outputs found
China's new corporate rescue laws: perspectives and principles
This article considers the new corporate insolvency legislation that came into force in China in June 2007. This law is part of a remarkable transformation in the Chinese economy in recent years. Significant numbers of ailing state owned enterprises have been reformed and subjected to hard budgetary constraints, while the private sector has grown dramatically. Market forces play a greater role, whereas the economy was previously tightly controlled by the state. These changes, together with pressures arising from external bodies such as the European Union, led to an urgent need for the adoption of the revised insolvency law, which has at its heart corporate rescue procedures. This article considers the content of this new law, the background to it, and also assesses the prospects for its operation. In particular attention is paid to the level of scope for state interference in the operation of the law
Geometry and Representations of the Quantum Supergroup OSPq(1|2n)
The quantum supergroup OSPq(1|2n) is studied systematically. A Haar
functional is constructed, and an algebraic version of the Peter - Weyl theory
is extended to this quantum supergroup. Quantum homogeneous superspaces and
quantum homogeneous supervector bundles are defined following the strategy of
Connes' theory. Parabolic induction is developed by employing the quantum
homogeneous supervector bundles. Quantum Frobenius reciprocity and a
generalized Borel - Weil theorem are established for the induced
representations.Comment: Latex, 20 page
Electronic state and superconductivity of YBa2Cu3-xO7-y (M=Al,Zn and Sn) systems
A series of YBa2Cu(3-x)MxO(7-y) (M=Al,Zn and Sn) single phase samples were prepared, and the measurements of the crystal structure, oxygen content, electric resistivity, thermoelectric power, Mossbauer spectrum, XPS and superconductivity were performed. The experimental results of X ray powder diffraction, Mossbauer spectrum and oxygen content show that the Zn(2+) and the Al(3+) occupy the Cu(2) site in Cu-O planes and the Cu(1) site in Cu-O chains respectively, but the Sn(4+) occupies both the Cu(1) sites. As regards the properties in superconducting state, both the Zn(2+) and the Al(3+) depress T(sub c) strongly, but the Sn(4+) does not. As for the electronic transport properties in normal state, the system doped by Al(3+) displays a rapid increase of resistivity and some electron localization-like effects, and the thermoelectric power enhances obviously; the series contained Zn(2+) almost shows no changes of electric resistivity but the sign of the thermoelectric power is reversed. Other results are given and briefly discussed
Helium Recombination Lines as a Probe of Abundance and Temperature Problems
The paper presents a simplified formula to determine an electron temperature,
Te(He I), for planetary nebulae (PNe) using the He I 7281/6678 line flux ratio.
In our previous studies of Te(He I) (Zhang et al. 2005), we used the He I line
emission coefficients given by Benjamin et al. (1999). Here we examine the
results of using more recent atomic data presented by Porter et al. (2005). A
good agreement is shown, suggesting that the effect of uncertainties of atomic
data on the resultant Te(He I) is negligible. We also present an analytical
formula to derive electron temperature using the He I discontinuity at 3421 A.
Our analysis shows that Te(He I) values are significantly lower than electron
temperatures deduced from the Balmer jump of H I recombination spectra, Te(H
I), and that inferred from the collisionally excited [O III] nebular-to-auroral
forbidden line flux ratio, Te([O III]). In addition, Te(H I) covers a wider
range of values than either Te(He I) or Te([O III]). This supports the
two-abundance nebular model with hydrogen-deficient material embedded in
diffuse gas of a ``normal'' chemical composition (i.e. ~solar).Comment: 5 pages, 3 figures. To appear in the RevMexAA proceedings of "The
Ninth Texas-Mexico Conference on Astrophysics
The Quantum Super Yangian and Casimir Operators of
The quantum super Yangian associated with the Perk - Schultz
solution of the Yang - Baxter equation is introduced. Its structural properties
are investigated, in particular, an extensive study of its central algebra is
carried out. A graded associative algebra epimorphism is established and constructed explicitly. Images of the central
elements of the quantum super Yangian under this epimorphism yield the Casimir
operators of the quantum supergroup constructed in an earlier
publication.Comment: 10 pages in plain LaTe
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