diversity, accessibility and reliability are the three main factors governing the adoption of information sources by farmers in rural areas. based on the research hypothesis, the existing knowledge and information delivery system in the agricultural sector, functions far below the ever changing nature and tangible needs of existing farming systems. the main objective in this study is to determi...

ependymomas are glial tumors originate from ependymal cells lining the ventricles and the central canal of the spinal cord. two thirds of ependymomas arise in the infratentorial or intraventriclesandone-third aredetected in supratentorial area. however supratentorial “cortical” ependymomas are veryuncommon. ependymomas are usually infratentorial, intraventricular tumor, including 2–9% of all ce...

The Borromean nucleus 17Ne (15O+p+ p) is investigated by using the hyperspheric adiabatic expansion for a a three-body system. The measured size of 15O and the low-lying resonances of 16F (15O+p) are first used as constraints to determine both central and spin-dependent two-body interactions. Then, the ground state structure of 17Ne is found to be an almost equal mixture of s2 and d2 proton-15O...

We define and study the 2-category of torsors over a Picard groupoid, a central extension of a group by a Picard groupoid, and commutator maps in this central extension. Using this in the context of two-dimensional local fields and two-dimensional adèle theory we obtain the two-dimensional tame symbol and a new proof of Parshin reciprocity laws on an algebraic surface.

Given a finite metacyclic group G, a central extension F having the projective lifting property over all fields is constructed. This extension and its group rings are used to investigate the faithful irreducible projective representations of G and the fields over which they can be realized. A full description of the finite metacyclic groups having central simple twisted group rings over fields ...

considering the importance of extension agent as the mediator between farmers and experts, and their effective role in the transfer of knowledge and technology to farmers with the aim of achieving a sustainable agriculture system, the main purpose of this research was to analysis of the affecting factors on improvement of performance of extension agent from the farmers’ viewpoint in zahak towns...