this study examines iranian agricultural researchers’ attitudes regarding collaboration with extension workers and the variables associated with the researchers’ attitudes. data were obtained using a questionnaire developed by agricultural research centers of charmahal and bakhtiari, isfahan, safiabad and khuzestan in 1998. the findings re-vealed that the researchers’ attitudes towards collabor...

The purpose of this paper is to prove Boyd-Wong and Matkowski type fixed point theorems in orthogonal metric space which was defined by M.E. Gordji 2017 an extension the space. Some examples are established support our main results. Finally, we apply results establish existence a unique solution periodic boundary value problem.

We report on the extension of the concurrent constraint language Oz by constraints over finite sets of integers. Set constraints are an important addition to the constraint programming system Oz and are very employable in natural language processing and general problem solving. This extension profits much from its integration with the existing constraint systems over finite domains and feature ...

The adoption of new ideas and practices is affected by at least five factors: 1) the type of decision involved in adoption; 2) perceived attributes of the innovation; 3) communication channels used; 4) nature of the client system; and 5) the extent of the practitioner’s effort (Lamble. 1984). A major function of extension practitioners is to facilitate the adoption of new ideas and practices or...