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428 results on '"Thornton, Ian"'

106. Current status of the BlackCAT CubeSat

Author

Siegmund, Oswald H., Hoadley, Keri, Colosimo, Joseph M., Falcone, Abe D., Wages, Mitchell, Betts, Michael, Bevidas, William A., Buffington, Jacob C., Burrows, David N., Catlin, Zachary E., Emeigh, Timothy, Fox, Derek B., Grzybowski, Hannah M., Hancock, Frederic, Jennerjahn, Evan C., Josties, Jordan, Palmer, David M., Reichard, Collin S., Scigliani, Ana C., Stone, Lukas R., Thornton, Ian, Washington, Daniel, and Zugger, Michael E.

Published
2023
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107. 100 key research questions for the post-2015 development agenda

Author

Oldekop, Johan A., primary, Fontana, Lorenza B., additional, Grugel, Jean, additional, Roughton, Nicole, additional, Adu-Ampong, Emmanuel A., additional, Bird, Gemma K., additional, Dorgan, Alex, additional, Vera Espinoza, Marcia A., additional, Wallin, Sara, additional, Hammett, Daniel, additional, Agbarakwe, Esther, additional, Agrawal, Arun, additional, Asylbekova, Nurgul, additional, Azkoul, Clarissa, additional, Bardsley, Craig, additional, Bebbington, Anthony J., additional, Carvalho, Savio, additional, Chopra, Deepta, additional, Christopoulos, Stamatios, additional, Crewe, Emma, additional, Dop, Marie-Claude, additional, Fischer, Joern, additional, Gerretsen, Daan, additional, Glennie, Jonathan, additional, Gois, William, additional, Gondwe, Mtinkheni, additional, Harrison, Lizz A., additional, Hujo, Katja, additional, Keen, Mark, additional, Laserna, Roberto, additional, Miggiano, Luca, additional, Mistry, Sarah, additional, Morgan, Rosemary J., additional, Raftree, Linda L., additional, Rhind, Duncan, additional, Rodrigues, Thiago, additional, Roschnik, Sonia, additional, Senkubuge, Flavia, additional, Thornton, Ian, additional, Trace, Simon, additional, Ore, Teresa, additional, Valdés, René Mauricio, additional, Vira, Bhaskar, additional, Yeates, Nicola, additional, and Sutherland, William J., additional

Published
2015
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111. Why the animosity?

Author

Thornton, Ian

Subjects
Library and information science
Abstract

Living in Australia it makes no difference to me who is Librarian of Congress and my guess probably not to many Americans ('Carla D. Hayden Confirmed as 14th Librarian of [...]

Published
2016

112. Idiosyncratic body motion influences person recognition.

Author

Pilz, Karin S. and Thornton, Ian M.

Subjects
*BODY movement, *COGNITION, *COMPUTER-generated imagery, *MOTION capture (Human mechanics), *DYNAMICS
Abstract

Person recognition is an important human ability. The main source of information we use to recognize people is the face. However, there is a variety of other information that contributes to person recognition, and the face is almost exclusively perceived in the presence of a moving body. Here, we used recent motion capture and computer animation techniques to quantitatively explore the impact of body motion on person recognition. Participants were familiarized with two animated avatars each performing the same basic sequence of karate actions with slight idiosyncratic differences in the body movements. The body of both avatars was the same, but they differed in their facial identity and body movements. In a subsequent recognition task, participants saw avatars whose facial identity consisted of morphs between the learned individuals. Across trials, each avatar was seen animated with sequences taken from both of the learned movement patterns. Participants were asked to judge the identity of the avatars. The avatars that contained the two original heads were predominantly identified by their facial identity regardless of body motion. More importantly however, participants identified the ambiguous avatar primarily based on its body motion. This clearly shows that body motion can affect the perception of identity. Our results also highlight the importance of taking into account the face in the context of a body rather than solely concentrating on facial information for person recognition. [ABSTRACT FROM PUBLISHER]

Published
2017
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116. National-scale estimation of potentially harmful element ambient background concentrations in topsoil using parent material classified soil : stream-sediment relationships

Author

Appleton, Don, Rawlins, Barry, Thornton, Ian, Appleton, Don, Rawlins, Barry, and Thornton, Ian

Abstract

Regulatory authorities require estimates of ambient background concentrations (ABCs) of potentially harmful elements (PHEs) in topsoil; such data are currently not available in many countries. High resolution soil geochemical data exist for only part of England and Wales, whilst stream sediment data cover the entire landscape. A novel methodology is presented for estimating soil equivalent ABCs for PHEs from high-resolution (HR) stream sediment geochemical data grouped by common parent materials (PM), using arsenic (As) as an example. Geometric mean (GM) values for local PM groups are used to investigate different approaches for transforming sediment to soil equivalent concentrations. Holdout validation is used to assess: (i) the optimum number of samples for calculating local GM values, and (ii) the optimum scale at which to group data when using linear regression analysis to estimate GM soil ABCs from local sediment geochemical values. Holdout validation showed that the smallest differences were generally observed when five observations were used to calculate the GM and that these should be grouped over the smallest possible area in order to encompass soils over PMs with elevated GM As concentrations. Geometric mean ABCs are estimated and mapped for As in mineral soil across all of England and Wales within delineations of PM polygons. Errors for the estimation of soil equivalent GM As ABCs based on sediment data for an independent validation set were of a similar magnitude to those from holdout validation applied to the original data suggesting the approach is robust. The estimates of soil equivalent ABCs suggest that As exceeds the regulatory threshold used in risk assessments for residential land use (20 mg kg1) across 16% of the landscape of England and Wales. The applicability of the method for cognate landscapes, and potential refinements is discussed.

Published
2008

118. Sensitivity to changes with and without awareness: an empirical investigation

Author

Cleeremans, Axel, Azzi, Assaad Elia, Brédart, Serge, Thornton, Ian M., Peigneux, Philippe, Laloyaux, Cédric, Cleeremans, Axel, Azzi, Assaad Elia, Brédart, Serge, Thornton, Ian M., Peigneux, Philippe, and Laloyaux, Cédric

Abstract

Ce travail a pour objectif d'investiguer le sort réservé à des changements de nature visuelle qui se produisent dans notre environnement et que nous ne détectons pas consciemment. J'investiguerai en particulier si de tels changements non-perçus consciemment peuvent néanmoins (1) être représentés d'une certaine manière en-dessous du seuil de la conscience, et (2) exercer une influence causale sur des tâches comportementales subséquentes. A cette fin, une première étude cherche à établir si les paradigmes classiques de détection de changement sous-évaluent les capacités réelles de la mémoire visuelle à court terme. Cette étude a effectivement montré qu'il était possible de récupérer de l'information stockée en mémoire visuelle à court terme (MVCT), suggérant donc qu'il existe plus de capacités mnésiques visuelles que ce qui est utilisé dans les tâches classiques de détection de changement. Ensuite, une seconde étude a répliqué un paradigme dit d'identification implicite de changements et qui était controversé dans la littérature en raison de biais potentiels. Après correction de ces biais, nous avons pu démontrer que ce paradigme suggère bel et bien un effet d'identification implicite de changement puisque l'identité d'un changement simple (changement d'orientation d'un rectangle parmi 8 rectangles orientés de différentes manières) peut indicer un jugement d'orientation subséquent. Finalement, dans le dernier groupe d'expériences, un nouveau paradigme dans lequel les changements se produisent très progressivement et très lentement sera décrit. En utilisant ce paradigme, j'ai pu démontrer qu'alors que les observateurs demeurent inconscients du changement, ils restent néanmoins sensibles aux changements puisqu'ils « synchronisent » leur représentation en mémoire visuelle avec le stimulus présenté à l'écran. Enfin, dans la conclusion, je m'attacherai également à développer l'idée selon laquelle nous sommes (1) capables, au minimum, de mettre à jour notre mémoire visuel, Doctorat en sciences psychologiques, info:eu-repo/semantics/nonPublished

Published
2007

119. Administering Cognitive Tests Through Touch Screen Tablet Devices: Potential Issues.

Author

Jenkinsa, Amy, Lindsay, Stephen, Eslambolchilar, Parisa, Thornton, Ian M., and Tales, Andrea

Subjects
AGING, ATTENTION, COGNITION, FOCUS groups, QUALITATIVE research, TABLET computers
Abstract

Mobile technologies, such as tablet devices, open up new possibilities for health-related diagnosis, monitoring, and intervention for older adults and healthcare practitioners. Current evaluations of cognitive integrity typically occur within clinical settings, such as memory clinics, using pen and paper or computer-based tests. In the present study, we investigate the challenges associated with transferring such tests to touch-based, mobile technology platforms from an older adult perspective. Problems may include individual variability in technical familiarity and acceptance; various factors influencing usability; acceptability; response characteristics and thus validity per se of a given test. For the results of mobile technologybased tests of reaction time to be valid and related to disease status rather than extraneous variables, it is imperative the whole test process is investigated in order to determine potential effects before the test is fully developed. Researchers have emphasized the importance of including the 'user' in the evaluation of such devices; thus we performed a focus group-based qualitative assessment of the processes involved in the administration and performance of a tablet-based version of a typical test of attention and information processing speed (a multi-item localization task), to younger and older adults.We report that although the test was regarded positively, indicating that using a tablet for the delivery of such tests is feasible, it is important for developers to consider factors surrounding user expectations, performance feedback, and physical response requirements and to use this information to inform further research into such applications. [ABSTRACT FROM AUTHOR]

Published
2016
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