Browsing by Author "Aniserowicz, Karol"

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    Down-sampled and Under-sampled Data sets in Feature Selective Validation (FSV)
    (IEEE, 2014-06-09) Zhang, Gang; Wang, Lixin; Duffy, A. P.; Sasse, Hugh G.; Di Febo, D.; Orlandi, A.; Aniserowicz, Karol
    Feature Selective Validation (FSV) is a heuristic method for quantifying the (dis)similarity of two data sets. The computational burden of obtaining the FSV values might be unnecessarily high if data sets with large numbers of points are used. While this may not be an important issue per se it is an important issue for future developments in FSV such as real-time processing or where multi-dimensional FSV is needed. Coupled with the issue of data set size, is the issue of data sets having ‘missing’ values. This may come about because of a practical difficulty or because of noise or other confounding factors making some data points unreliable. These issues relate to the question “what is the effect on FSV quantification of reducing or removing data points from a comparison – i.e. down- or under-sampling data?” This paper uses three strategies to achieve this from known data sets. This paper demonstrates, through a representative sample of 16 pairs of data sets, that FSV is robust to changes providing a minimum data set size of approximately 200 points is maintained. It is robust also for up to approximately 10% ‘missing’ data, providing this does not result in a continuous region of missed data.
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    ItemOpen Access
    Internal Stirring: An Approach to Approximate Evaluation of Shielding Effectiveness of Small Slotted Enclosures
    (IET Science, Measurement and Technology, 2016) Rusiecki, Andrzej; Aniserowicz, Karol; Duffy, A. P.; Orlandi, A.
    A new technique for approximate evaluation of a small slotted enclosure shielding effectiveness (SE) is proposed. The enclosure under test is equipped with a built-in, rotating, conductive stirrer, and the SE is determined for discrete angles of the stirrer position. The SE characteristics computed in the frequency domain for the enclosure with the stirrer are compared to those of the enclosure containing different arrangements of printed circuit boards. The paper concludes that the inclusion of an internal stirrer is a potentially beneficial approach to shielding effectiveness testing.
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    A review of the feature selective validation (FSV) method
    (2013) Duffy, A. P.; Aniserowicz, Karol; Maksimowicz, T.