Nicola Koper

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(2009) Selecting the correct variance–covariance structure for longitudinal data in ecology : a comparison of the Akaike, quasi-information and deviance information criteria. Abstract Ecological data sets often use clustered sampling, or use repeated sampling in a longitudinal design. Choosing the correct covariance structure is an important step in the(More)
Probability of detection and accuracy of distance estimates in aural avian surveys may be affected by the presence of anthropogenic noise, and this may lead to inaccurate evaluations of the effects of noisy infrastructure on wildlife. We used arrays of speakers broadcasting recordings of grassland bird songs and pure tones to assess the probability of(More)
Grassland songbird populations across North America have experienced dramatic population declines due to habitat loss and degradation. In Canada, energy development continues to fragment and disturb prairie habitat, but effects of oil and gas development on reproductive success of songbirds in North American mixed-grass prairies remains largely unknown.(More)
Optimization of low voltage power MOSFETs in hard-switching high frequency power converters needs accurate models. This paper deals with a behavioural modelling approach, which employs look-up tables and fitting functions describing the device's characteristics. The required model data can be derived from extensive measurements or alternatively, from finite(More)
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