This paper reports on a systematic review of the evidence into the impacts of social network site usage on individual workplace outcomes. Twenty-seven studies met the inclusion criteria. SNS use in the workplace has been found to be positively associated with job satisfaction, job performance, innova-tive behaviour, employee engagement, and knowledge sharing, with knowledge sharing the most sup...

In an earlier paper [JMO], we gave a complete description of all homotopy classes of self maps of the classifying space BG, when G is any compact connected simple Lie group. In this paper, we extend those results to the case where G is any compact connected Lie group, but only considering self maps of BG which are rational equivalences. Most of the paper deals with self maps of the p-adic compl...

We give an exposition of the theory of adjoints and conductors for curves on nonsingular surfaces, emphasizing the case of plane curves, for which the presentation is particularly elementary. This is closely related to Max Noether’s “AF +BG” theorem, which is proved for curves with arbitrary multiple components.

Let Gp be a Sylow p-subgroup of the finite groupG and let Char G n (Gp) represent the set of degree n complex characters of Gp that are the restrictions of class functions on G. We construct a natural map ψG : [BG,BU(n)] → ∏ p||G| Char G n (Gp) and prove that ψG is a surjection for all finite groups G that do not contain a subgroup isomorphic to (Z/p) for any prime p. We show, furthermore, that...

Let G be a torsion free discrete group with a finite dimensional classifying space BG. We show that G has a dual Dirac morphism if and only if a certain coarse (co)-assembly map is an isomorphism. Hence the existence of a dual Dirac morphism for such G is a metric, that is, coarse, invariant of G. We get similar results for groups with torsion as well. The framework that we develop is also suit...

Let A be a topological space which is not finitely generated and CH(A) denote the coreflective hull of A in Top. We construct a generator of the coreflective subcategory SCH(A) consisting of all subspaces of spaces from CH(A) which is a prime space and has the same cardinality as A. We also show that if A and B are coreflective subcategories of Top such that the hereditary coreflective kernel o...

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In this paper, we develop the control rules for job shop scheduling based on the Flow Rate Control model. We derive optimal control results for job shops with work station in series (transfer line). We use these results to derive rules which are suboptimal, robust against random events, and easy to implement and expand.

We report on a study of the relationship between collaboration and knowledge management. Successful knowledge management projects encourage and enhance collaboration between employees. The presence of ‘collaborative’ technologies might help that process but does not automatically increase collaboration. Empirical evidence is taken from a broad range of organisations: Anglian Water plc, BG Techn...

Let G be a finite group, let V be an FG-module of finite dimension d, and denote by β(V ,G) the minimal number m such that the invariant ring S(V ) is generated by finitely many elements of degree at most m. A classical result of E. Noether says that β(V ,G) 6 |G| provided that charF is coprime to |G|!. If charF divides |G|, then no bounds for β(V ,G) are known except for very special choices o...