this paper investigates the impacts of economic and financial developments on environmental pollution for 6 opec countries using panel cointegration and panel long-run estimator (dols) over the period 1980–2008.  the results shows that both economic and financial development have significant effect on the environmental quality in selected opec economies. the findings not support the existence o...

Infrared spectra of some deuterio analogues of carboxylic acids in heavy water have been investigated and their spectral behavior in carbonyl stretching frequency region have been interpreted in terms of their structural behavior in aqueous solutions. It has been shown that a linear relationship exists between carbonyl stretching frequency of solvated acids at infinite dilution and their...

intellectual capital is set of knowledge-based assets that belongs to an organization and will add value to key organizational stakeholders and this leads to a better competitive situation. the objective of this research is to investigate the relationship between intellectual capital and companies' performance in iran during 1382-1387 using lisrel software. earning per share, return on equ...

Parameterizations have a wide range of applications in computer graphics, geometric design and many other fields of science and engineering. Although surface parameterizations have been widely studied and are well developed, little research exists on the volumetric data due to the intrinsic difficulties in extending surface parameterization algorithms to volumetric domain. In this paper, we pre...

Results from any existing clustering algorithm that are used for segmentation are highly sensitive to features that limit their generalization. Shape is one important attribute of an object. The detection and separation of an object using fuzzy ring-shaped clustering (FKR) and elliptic ring-shaped clustering (FKE) already exists in the literature. Not all real objects however, are ring or ellip...

In this paper, we investigate the light trajectories and shadow properties in rotating version of null naked singularity (NNS) spacetime which is derived using Newman- Janis algorithm without complexification method. We discuss some geometrical causal structure Rotating Naked Singularity (RNS) spacetime. The gravitational lensing a analyzed, results are compared to those Kerr black hole. case h...

BACKGROUND A recent cross-national study demonstrated a curvilinear (inverted U-shaped curve) between elderly male suicide rates and the Human Development Index (HDI) fitting the quadratic equation y = a + bx - cx2 where y is the elderly male suicide rate, x is the HDI and a, b and c are constants). This study used only one-year cross-sectional data on suicide rates, and suicide rates can rando...

Helicobacter pylori exists in two distinct forms, rod shaped or coccoid, in stomachs of infected patients. Based on in vitro proteome comparisons, there are no detectable coccoid-specific proteins, which argues against the specific adaptation of coccoid Helicobacter to distinct biological functions, such as enhanced persistence or transmission to other hosts.