This paper investigates the performance and analysis of both parallel and serial con-catenation of single parity check (SPC) product codes in an Additive White Gaussian Noise (AWGN) channel. Asymptotic performance bounds are derived and compared to simulation results.

this paper seeks to answer the question whether the constitutional revolution of 1905-1911 in iran was a democratic revolution or social revolution? this discussion has been explained from the view point of the political sociology, relying on the moore's theory. studies indicate that the constitutional revolution in all periods has had the features of democratic revolution for the followin...

Observations of the increased frequency of melanic forms in moths of the genus Biston in Great Britain after the industrial revolution lead to the development of the theory of Industrial Melanism. Nonetheless, arguments against that interpretation of the experimental evidence have polarized acceptance of the concept. New evidence based on diurnal butterflies is more credible because it involves...

Special class of surfaces, two-axial surfaces of revolution created by the Euclidean metric transformation of a simultaneous revolution about two different axes, is presented in the paper. Three specific subclasses of surfaces are classified with respect to the superposition of the two axes 1o, 2o of revolution. There are defined several types of two-axial surfaces of revolution specifying the ...

objective: the usage of pesticides has increased during the recent years. one the other hand, presence of harmful pesticides residue in rice and other food has caused a great concern among the consumers. therefore, it is important to develop some pragmatic procedures to increase the food safety along with the reduction in consumption of pesticide residues. methods: a gas chromatograph with elec...

This paper addresses the problem of recovering the 3D shape of a surface of revolution from multiple uncalibrated perspective views. In previous work, we have exploited the invariant properties of the surface of revolution and its silhouette to recover the contour generator and hence the meridian of the surface of revolution from a single uncalibrated view. However, there exists one degree of f...