The implementation of information systems is increasingly resulting in significant impacts upon the host organisation’s culture. This study seeks to explore how major changes to the flow and quality of information, engendered through the implementation of data warehouses, are likely to impact upon organisational culture, amongst a sample of large UK-based enterprises. An analysis of these cases...

We study in detail a supersymmetric Peccei-Quinn model, which has a DFSZ and a KSVZ version. The fields breaking the Peccei-Quinn (PQ) symmetry correspond to flat directions (flaton fields) and have unsuppressed couplings when PQ symmetry is unbroken. The models have interesting particle physics phenomenology. The PQ scale is naturally generated through radiative corrections; also, in the DFSZ ...

The purpose of this paper is to extend to a ne in the control stochastic di erential systems the well{known result of Jurdjevic{Quinn [2]. This result incorporates a previous result in the stochastic context proved in [1].

A frequency can be estimated by few Discrete Fourier Transform (DFT) coefficients, see Rife and Vincent (1970), Quinn (1994, 1997). This approach is computationally efficient. However, the statistical efficiency of the estimator depends on the location of the frequency. In this paper, we explain this approach from a point of view of an Approximate Maximum Likelihood (AML) method. Then we enhanc...