Search Results - "Aston, A J"

Unifying Amplitude and Phase Analysis: A Compositional Data Approach to Functional Multivariate Mixed-Effects Modeling of Mandarin Chinese by Hadjipantelis, P. Z., Aston, J. A. D., Müller, H. G., Evans, J. P.

“…Mandarin Chinese is characterized by being a tonal language; the pitch (or F ₀) of its utterances carries considerable linguistic information. However, speech…”
Get full text

Divide-and-Conquer With Sequential Monte Carlo by Lindsten, F., Johansen, A. M., Naesseth, C. A., Kirkpatrick, B., Schön, T. B., Aston, J. A. D., Bouchard-Côté, A.

“…We propose a novel class of Sequential Monte Carlo (SMC) algorithms, appropriate for inference in probabilistic graphical models. This class of algorithms…”
Get full text

A data-centric bottom-up model for generation of stochastic internal load profiles based on space-use type by Ward, R. M., Choudhary, R., Heo, Y., Aston, J. A. D.

“…There is currently no established methodology for the generation of synthetic stochastic internal load profiles for input into building energy simulation. In…”
Get full text

Distances and inference for covariance operators by PIGOLI, DAVIDE, ASTON, JOHN A. D., DRYDEN, IAN L., SECCHI, PIERCESARE

“…A framework is developed for inference concerning the covariance operator of a functional random process, where the covariance operator itself is an object of…”
Get full text

Multi-resolution Bayesian regression in PET dynamic studies using wavelets by Turkheimer, F.E., Aston, J.A.D., Asselin, M.-C., Hinz, R.

“…In the kinetic analysis of dynamic PET data, one usually posits that the variation of the data through one dimension, time, can be described by a mathematical…”
Get full text

Modeling Dynamic PET-SPECT Studies in the Wavelet Domain by Turkheimer, Federico E., Banati, Richard B., Visvikis, Dimitris, Aston, John A. D., Gunn, Roger N., Cunningham, Vincent J.

“…This work develops a theoretical framework and corresponding algorithms for the modeling of dynamic PET-SPECT studies both in time and space. The problem of…”
Get full text

Modeling Macroeconomic Time Series via Heavy Tailed Distributions by Aston, J. A. D.

“…It has been shown that some macroeconomic time series, especially those where outliers could be present, can be well modelled using heavy tailed distributions…”
Get full text

The correlation space of Gaussian latent tree models and model selection without fitting by SHIERS, N., ZWIERNIK, P., ASTON, J. A. D., SMITH, J. Q.

“…We provide a complete description of possible distributions consistent with any Gaussian latent tree model. This description consists of polynomial equations…”
Get full text

Dynamic functional changes associated with cognitive skill learning of an adapted version of the Tower of London task by Beauchamp, M.H, Dagher, A, Aston, J.A.D, Doyon, J

“…In this study, we used a modified version of the Tower of London (TOL) planning task, in conjunction with positron emission tomography, to examine the neural…”
Get full text

MR Image Segmentation Using a Power Transformation Approach by Juin-Der Lee, Hong-Ren Su, Cheng, P.E., Liou, M., Aston, J., Tsai, A.C., Cheng-Yu Chen

“…This study proposes a segmentation method for brain MR images using a distribution transformation approach. The method extends traditional Gaussian mixtures…”
Get full text

Isoshot - a new development in the manufacture of steel shot by Aston, A.J

“…Service life or consumption rate of any reusable blast cleaning or shot peening abrasive is dependent upon its toughness and ability to withstand repeated…”
Get full text

Implied distributions in multiple change point problems by Aston, J. A. D., Peng, J. Y., Martin, D. E. K.

“…A method for efficiently calculating exact marginal, conditional and joint distributions for change points defined by general finite state Hidden Markov Models…”
Get full text

Estimating the Delay of the fMRI Response by Liao, C.H., Worsley, K.J., Poline, J.-B., Aston, J.A.D., Duncan, G.H., Evans, A.C.

“…We propose a fast, efficient, general, simple, valid, and robust method of estimating and making inference about the delay of the fMRI response modeled as a…”
Get full text

Reduced dopamine D1 receptor binding in the ventral striatum of cigarette smokers by Dagher, Alain, Bleicher, Catherine, Aston, John A.D., Gunn, Roger N., Clarke, Paul B.S., Cumming, Paul

“…Several drugs of abuse, including nicotine, are thought to exert their reinforcing effects through actions on the mesolimbic dopamine system. Animal and human…”
Get full text

A linear wavelet filter for parametric imaging with dynamic PET by Turkheimer, F.E., Aston, J.A.D., Banati, R.B., Riddell, C., Cunningham, V.J.

“…Describes a new filter for parametric images obtained from dynamic positron emission tomography (PET) studies. The filter is based on the wavelet transform…”
Get full text

A Statistical Method for the Analysis of Positron Emission Tomography Neuroreceptor Ligand Data by Aston, J.A.D., Gunn, R.N., Worsley, K.J., Ma, Y., Evans, A.C., Dagher, A.

“…A method for voxel by voxel statistical inference of PET radioligand receptor studies is presented. This method is aimed at detecting differences in…”
Get full text

Estimation of temperature-dependent growth profiles for the assessment of time of hatching in forensic entomology by Pigoli, D, Aston, J. A. D, Ferraty, F, Mazumder, A, Richards, C, Hall, M. J. R

“…Forensic entomology contributes important information to crime scene investigations. In this paper, we propose a method to estimate the hatching time of larvae…”
Get full text

Statistical Modeling of Positron Emission Tomography Images in Wavelet Space by Turkheimer, Federico E., Brett, Matthew, Aston, John A. D., Leff, Alexander P., Sargent, Peter A., Wise, Richard J. S., Grasby, Paul M., Cunningham, Vincent J.

“…A new method is introduced for the analysis of multiple studies measured with emission tomography. Traditional models of statistical analysis (ANOVA, ANCOVA…”
Get full text

Association between Pelodera strongyloides (Nematoda: Rhabditidae) and wood mice, Apodemus sylvaticus by Hominick, W M, Aston, A J

“…Pelodera strongyloides larvae were found in the conjunctival sacs of Apodemus sylvaticus and Clethrionomys glareolus and in hair follicles of A. sylvaticus…”
Get more information

Modeling macroeconomic time series via heavy tailed distributions by Aston, J. A. D

“…IMS Lecture Notes Monograph Series 2006, Vol. 52, 138-148 It has been shown that some macroeconomic time series, especially those where outliers could be…”
Get full text