نتایج جستجو برای: nil
تعداد نتایج: 4574 فیلتر نتایج به سال:
Organisations invest enormous amount of resources in acquiring Enterprise Systems (ES), presumably expecting positive impacts to the organisation and its functions. Despite the optimistic motives, some ES projects have reported nil or detrimental impacts. This paper studies the proposition that the perspective of the stakeholders of an organisation may have contributed to the differences in rec...
Organisations invest substantial resources in Enterprise Systems (ES) expecting positive outcomes for the organisation and its functions. Yet, many ES projects have reported nil or detrimental impacts. The effective management of ES-related knowledge has been suggested as a critical success factor for these ES projects. This paper analyses the impact of managing knowledge on Enterprise System s...
Methods and properties regarding the linear perturbations are discussed for some spatially closed (vacuum) solutions of Einstein’s equation. The main focus is on two kinds of spatially locally homogeneous solution; one is the Bianchi III (Thurston’s H × R) type, while the other is the Bianchi II (Thurston’s Nil) type. With a brief summary of previous results on the Bianchi III perturbations, as...
Using the description of dominions in the variety of nilpotent groups of class at most two, we give a characterization of which groups are absolutely closed in this variety. We use the general result to derive an easier characterization for some subclasses; e.g. an abelian group G is absolutely closed in N2 if and only if G/pG is cyclic for every prime number p . The main result of this paper i...
We study relations between subsets of integers that are large, where large can be interpreted in terms of size (such as a set of positive upper density or a set with bounded gaps) or in terms of additive structure (such as a Bohr set). Bohr sets are fundamentally abelian in nature and are linked to Fourier analysis. Recently it has become apparent that a higher order, nonabelian, Fourier analys...
The notions of nil, nilpotent or PI-rings (= rings satisfying a polynomial identity) play an important role in the ring theory (see e.g. [8], [11], [20]). Banach algebras with these properties have been studied considerably less and the existing results are scattered in literature. The only exception is the work of Krupnik [13], where the Gelfand theory of Banach PI-algebras is presented. Howev...
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