land evaluation is the process of predicting the land use potential on the basis of its attributes. at the present study the qualitative land suitability evaluation was investigated for specific cereal crops including irrigated wheat (triticum aestivum l.), mays (zea mays l.) and cotton (gossypium herbaceum l.), based on fao land evaluation frame works (1976, 1983 and1985), climatic and soil re...

Variant parametric types represent the successful integration of subtype and parametric polymorphism to support a more flexible subtyping for Javalike languages. A key feature that helps strengthen this integration is the use-site variance. Depending on how the fields are used, each variance denotes a covariant, a contravariant, an invariant or a bivariant subtyping. By annotating variance prop...

Systems are constructed from component libraries where each of them is commonly parametric for realizing specific properties. Apart from component-level properties, one also need to ensure emerging properties that only arise when gluing components into systems. In this paper, we present a methodology to automatically control a component-based system to achieve desired invariance (safety) and in...

In this paper, the new kind of parameter strong (weak) domination number in a bipolar fuzzy graph is defined and established the parametric conditions. Another new kind of parameter a totalstrong (weak) bipolar domination number is defined and established the parametric conditions. The properties of strong (weak) bipolar domination number and totalstrong (weak) bipolar domination numbersare dis...

The possibility of compensating losses in negative-index metatamterials doped by resonant four-level centers is shown based on quantum interference and extraordinary properties of parametric amplification of counterpropagating electromagnetic waves. ©2007 Optical Society of America OCIS codes: (1904410) Nonlinear optics, parametric processes, (270.1670) Coherent optical effects

We analyze optical parametric interactions in nonlinear magneto-optical media simultaneously possessing a second-order nonlinearity and a spatial modulation of its linear optical properties. An analytic solution for the conversion efficiency of energy transfer from an optical pump to a signal wave is presented, and we discuss the possibility of tunability that is added to the parametric process.