14,519 research outputs found
The relationships between corruption and pollution on corruption regimes
Previous studies have focused mainly on the effect of corruption on pollution. The results of these studies show an inverted U-shaped relationship between economic growth and pollution. In addition, some researchers have suggested that corruption plays an important role in determining pollution. This study proposes the hypothesis of a nonlinear long-run relationship between pollution and corruption. The goal of the study is to investigate the threshold cointegration effect of pollution on corruption using panel data for 62 countries over the period from 1997 to 2004. The results show that the effect of the Corruption Perceptions Index (CPI) on pollution is insignificant in low-corruption regimes. This implies that corruption does not slow down environmental pollution in countries with low corruption. The impact of the CPI on environmental pollution is also insignificant in high-corruption regimes. This result implies that corruption has no adverse impact on environmental pollution in countries with high corruption.Corruption, Pollution, Threshold, Error-Correction Model
Pseudo-Einstein and Q-flat metrics with eigenvalue estimates on CR-hypersurfaces
Let be the smooth boundary of a bounded strongly pseudo-convex
domain in a complete Stein manifold . Then (1) For ,
admits a pseudo-Eistein metric; (2) For , admits
a Fefferman metric of zero CR Q-curvature; and (3) for a compact strictly
pseudoconvex CR embeddable 3-manifold , its CR Paneitz operator is a
closed operator
Some Exact Results on Bond Percolation
We present some exact results on bond percolation. We derive a relation that
specifies the consequences for bond percolation quantities of replacing each
bond of a lattice by bonds connecting the same adjacent
vertices, thereby yielding the lattice . This relation is used to
calculate the bond percolation threshold on . We show that this
bond inflation leaves the universality class of the percolation transition
invariant on a lattice of dimensionality but changes it on a
one-dimensional lattice and quasi-one-dimensional infinite-length strips. We
also present analytic expressions for the average cluster number per vertex and
correlation length for the bond percolation problem on the
limits of several families of -vertex graphs. Finally, we explore the effect
of bond vacancies on families of graphs with the property of bounded diameter
as .Comment: 33 pages latex 3 figure
Zeros of the Potts Model Partition Function on Sierpinski Graphs
We calculate zeros of the -state Potts model partition function on
'th-iterate Sierpinski graphs, , in the variable and in a
temperature-like variable, . We infer some asymptotic properties of the loci
of zeros in the limit and relate these to thermodynamic
properties of the -state Potts ferromagnet and antiferromagnet on the
Sierpinski gasket fractal, .Comment: 6 pages, 8 figure
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