Amidst the growing popularity of complex dialog systems it has become quite difficult to grasp the implementation of such systems. The intention of this document is to introduce the designers and researchers new to this field to tools and design techniques which may be used to develop dialog systems....

The concept of a radical was introduced by J. H. M. Wedderburn in 1908, for determination of structures of algebras and later on various radicals have been proposed by Artin, Baer, Jacobson, Brown-McCoy, Levitzki etc. for study of rings in the forties. The general theory of radicals was initiated by Kurosh (1953) and Amitsur in the early fifties....

NTFPs can be defined as all goods for commercial industrial or subsistence use derived from the forest other than the wood i.e. everything except timber and fuel wood ....