Given a finitely presented group G and an epimorphism φ : G → Z Cochran and Harvey defined a sequence of invariants dn(G,φ) ∈ N0, n ∈ N0, which can be viewed as the degrees of higher–order Alexander polynomials. Cochran and Harvey showed that (up to a minor modification) this is a never decreasing sequence of numbers if G is the fundamental group of a 3–manifold with empty or toroidal boundary....

economic and economic structures important factorin fluencing in the manufacturing, shaping and development people living space. in the approach geography is very important production trend, transport, interchange, changing shape and consumption products required people, risedesire, spirit,the beliefsand behavior. weekly market from the distant past hitherto as center for doing necessary interc...

the main purpose of this research was to study different aspects of self-employment among the agricultural female students in university of zanjan. the statistical population of the study contained of senior female students in agriculture faculty of zanjan university in 2014-2015 academic year (n= 135).according to cochran's formula, 63 student were selected using a stratified random sampl...

Genome-wide association studies the evaluation of association between candidate gene and disease status is widely carried out using Cochran-Armitage trend test. However, only a small number of research papers have evaluated the distribution of p-values for the Cochran-Armitage trend test. In this paper, an enhanced version of Cochran-Armitage trend test based on bootstrap approach is introduced...

the main purpose of this research was to study different aspects of self-employment among the agricultural female students in university of zanjan. the statistical population of the study consisted of senior female students in agriculture faculty of zanjan university in 2014-2015 academic year (n= 135). according to cochran's formula, 63 students were selected using a stratified random sam...

one factor that has highlighted the role of agriculture in the economy is to make the marketing system of agricultural products more efficient. the main purpose of this study was to identify the requirements of marketing the organic pomegranate of paveh, kermanshah province, iran, from the perspective of farmers. in order to identify contributing factors, an exploratory factor analysis was used...