The authors investigate the origins of homophily in a large university community, using network data in which interactions, attributes, and affiliations are all recorded over time. The analysis indicates that highly similar pairs do show greater than average propensity to form new ties; however, it also finds that tie formation is heavily biased by triadic closure and focal closure, which effec...

The role of need for cognitive closure (NCC, Kruglanski, 1989, 2004) plays in the transmission of a group norm is studied applying the Jacobs and Campbell's (1961) experimental generation paradigm. It is hypothesized that the permanence tendency, linked to an high Need of Cognitive Closure produces a greater resistance to change of experimentally induced group norms. Two studies were conducted ...

Discrete systems such as sets, monoids, groups are familiar categories. The internal structure of the latter two is defined by an algebraic operator. In this paper we concentrate on discrete systems that are characterized by unary operators; these include choice operators σ, encountered in economics and social theory, and closure operators φ, encountered in discrete geometry and data mining. Be...

In this paper we will generalize  some of known results on the tight closure of an ideal to the tight closure of an ideal relative to a module .

In this paper we propose a market mechanism for regulated exit of highly emissions intensive power stations from the electricity grid. The starting point is that there is surplus capacity in coal fired power generation in Australia. In the absence of a carbon price signal, black coal generation capacity may leave the market instead of high emitting brown coal power stations. We lay out options ...

team network structure has been shown to be an important determinant of both team and individual performance outcomes, yet few studies have investigated the relationship between team network structure and technology usage behaviors. Drawing from social network and technology use literature, we examine how the structure 10 MAgNI, ANgSt, AND AgArWAl of a team’s advice-seeking network affects indi...

In the paper four semirings for solving social networks problems are constructed. The closures of the matrix of a given signed graph over balance and cluster semirings can be used to decide whether the graph is balanced or clusterable. The closure of relational matrix over geodetic semiring contains for every pair of vertices and the length and the number of geodesics; and for geosetic semiring...

Four elderly patients with multiple comorbidities, polypharmacy, and social issues requested surgical management of sizeable, symptomatic skin cancers: basal cell carcinomas (BCC), squamous cell carcinoma (SCC), and melanoma. All patients desired closure methods that would avoid extensive reconstruction and minimize wound care responsibilities. In this retrospective case series, we investigated...

glutathione s-transferases (gsts) are members of multigenic family which have the essential functionin cells as an antioxidant. in the present study we studied the polymorphism of gstt1 and gstm1 deletion genotypes in iranian patients with primary closed angle glaucoma (pcag) compared to healthy subjects. we conducted a study of 41 pcag patients (24 women, 17 men) and 100 healthy participants (...