Abstract In this study, we have compared time series of pollen concentration originating from two Hirst-type volumetric samplers that were equipped with different sampling heads. To collect airborne pollen, used classic sampler mobile head including wind vane and adapted fixed having two-layered inlet, like in Sigma-2 passive sampler. The devices placed at the roof level, on top building Facult...

The variability inherently present in biophysical data is partly contributed by disparate sampling resolutions across instrumentations. This poses a potential problem for statistical inference using pooled data in open access repositories. Such repositories combine data collected from multiple research sites using variable sampling resolutions. One example is the Autism Brain Imaging Data Excha...

Binaural synthesis of plane wave decomposed spherical microphone data using head-related transfer functions (HRTFs) is a well-known approach for auralization. Rotational head movements can be considered by dynamic rotation of the HRTF dataset. Translatory head movements are coped by spatio-temporal shifts of the individual planes waves. This paper analyses this auralization method with respect ...

In this paper we describe a new method for estimating where a person is looking in images where the head of a person is typically 20 pixels high. We use a feature vector based on skin detection to estimate the orientation of the head, which is discretised into 8 different orientations, relative to the camera. A fast sampling method returns a distribution over head pose. The general direction of...

BACKGROUND Cerebral blood flow (CBF) quantitation using technetium-99m hexamethylpropyleneamine oxime (99mTc-HMPAO) generally requires assessment of input function by arterial blood sampling, which would be invasive for small animals. We therefore performed chest dynamic planar imaging, instead of arterial blood sampling, to estimate the input function and establish noninvasive quantitation met...

Materials and methods A total of 482 heads of household have been selected by using a multi-stage sampling method. Data was collected via household’s structured questionnaire. The response rate was 71.7% and data was analysed by using SPSS version 16.0. Age range of respondents was 28 to 73 years old with the mean age of 46.60 ±11.85 years. The majority of clients were married (59.8%) and were ...

OBJECTIVE To determine the perceptions of the community about prevalence of different diseases in Gulshan-e-Sikandarabad, an urban squatter settlement in Karachi and compare them with the data about disease pattern available at Primary Health Care Center in the same community. METHODS A stratified random sample of ten percent of houses of the community was selected and both male and female he...