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5,699 results on '"Edwards, Mark"'

19. Contemporary photographic practice and the landscape tradition in East Anglia

Author

Edwards, Mark

Abstract

This thesis examines four bodies of my work made over the last twenty-three years in addition to a further series which anticipates and points towards new trajectories in the development of my practice. Over this time my research and photography have primarily concentrated on the landscape, and in particular, the topography of East Anglia. Within this geographical area there is a rich tradition of landscape painting and writing. My work has been informed by both, and these traditions and connections form an important facet of my imagery, research and writing. Each chapter of the thesis reflects and examines an individual body of work in the chronological order of its making. While placing the work into a broader context they also establish a reflective framework for examining contemporary cultural and philosophical discourses around each body of photographs. While discussing each series specifically the commentary also demonstrates an awareness of the connection between each body of work and new developments inherent in them. As a body of research and reflective analysis the text articulates a deeper understanding of each series and brings new insights into work made over a span of two decades.

Published
2023

20. Using modified intention-to-treat as a principal stratum estimator for failure to initiate treatment

Author

Kahan, Brennan C, White, Ian R, Edwards, Mark, and Harhay, Michael O

Subjects
Statistics - Methodology
Abstract

Background: A common intercurrent event affecting many trials is when some participants do not begin their assigned treatment. Many trials use a modified intention-to-treat (mITT) approach, whereby participants who do not initiate treatment are excluded from the analysis. However, it is not clear the estimand being targeted by such an approach or the assumptions necessary for it to be unbiased. Methods: We demonstrate that a mITT analysis which excludes participants who do not begin treatment is estimating a principal stratum estimand (i.e. the treatment effect in the subpopulation of participants who would begin treatment, regardless of which arm they were assigned to). The mITT estimator is unbiased for the principal stratum estimand under the assumption that the intercurrent event is not affected by the assigned treatment arm, that is, participants who initiate treatment in one arm would also do so in the other arm. Results: We identify two key criteria in determining whether the mITT estimator is likely to be unbiased: first, we must be able to measure the participants in each treatment arm who experience the intercurrent event, and second, the assumption that treatment allocation will not affect whether the participant begins treatment must be reasonable. Most double-blind trials will satisfy these criteria, and we provide an example of an open-label trial where these criteria are likely to be satisfied as well. Conclusions: A modified intention-to-treat analysis which excludes participants who do not begin treatment can be an unbiased estimator for the principal stratum estimand. Our framework can help identify when the assumptions for unbiasedness are likely to hold, and thus whether modified intention-to-treat is appropriate or not., Comment: Changes to Introduction and Abstract, minor changes to Methods

Published
2022
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28. The next revolution at sea

Author

Ulrich, H.G., III , RADM and Edwards, Mark J., RADM

Subjects
NAVY - United States - Equipment, SEA POWER - United States, WARSHIPS - United States - Design, MILITARY PLANNING - United States
Abstract

illus

Published
2003

33. Specialist physiotherapy for functional motor disorder in England and Scotland (Physio4FMD): a pragmatic, multicentre, phase 3 randomised controlled trial

Author

Beaves, Emily, Breen, David, Burness, Christine, Caddy, Simone, Callaghan, Hannah, Carberry, Andrew, Chetham, Luke, Clyne, Andrea, Cobb, Susie, Coebergh, Jan, Cook, Lewis, Cookson, Patrick, Cooper, Paul, Diamond, Clare, Drake, Lee, Dunn, Victoria, Gardiner, Paula, Gilbertson, Thomas, Golder, Dawn, Gregory, Rebecca, Harbinson, Helen, Higgins, Rory, Hoeritzauer, Ingrid, Irvine, Laura, Isaacs, Jeremy, Jay, Emily, Kearney, Danielle, Khan, Uzma, Magro, James, Mallam, Elizabeth, Harle, Eleanor, Massey, Luke, McRae, Sarah, Misra, Shagun, Mitchell, Steph, Moss, Cameron, Mountain, Esther, Murray, Shona, Newby, Rachel, Novak, Marianne, Ross, Annie, Rutherford, Anna, Sare, Gillian, Sears, Rhiannon, Sedley, Will, Singhal, Sumeet, Stanton, Biba, Stone, Charlotte, Szeto, Gillian, Tarr, Lauren, Teodoro, Tiago, Teweleit, Volker, Walsh, Michael, Warman, Rhian, Yogarajah, Mahinda, Nielsen, Glenn, Stone, Jon, Lee, Teresa C, Goldstein, Laura H, Marston, Louise, Hunter, Rachael Maree, Carson, Alan, Holt, Kate, Marsden, Jon, Le Novere, Marie, Nazareth, Irwin, Noble, Hayley, Reuber, Markus, Strudwick, Ann-Marie, Santana Suarez, Beatriz, and Edwards, Mark J

Published
2024
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34. Cardiopulmonary exercise variables and their association with postoperative morbidity and mortality after major oesophagogastric cancer surgery—a multicentre observational study

Author

West, Malcolm A., Rahman, Saqib, Jack, Sandy, Grocott, Michael P.W., Levett, Denny Z.H., Rashid, Yasir, Griffiths, John, Ezra, Martin, Ayres, Lyndsay, Neville-Webbe, Helen, Javed, Muhammad Shafiq, Shrotri, Milind, Khan, Iftikhar, Whitmore, David, Prabhu, Pradeep, Timbrell, David, Allen, Sophie, Packham, Andrew O., Sharpe, David, Anderson, Helen, Minto, Gary, McAleer, Samuel, McPhail, Stuart, Alasmar, Mohamed, Hartley, Robert A., Sultan, Javed, Grace, Ben, Underwood, Timothy J., Byrne, James, Noble, Fergus, Kelly, Jamie, Ansell, Gillian, and Edwards, Mark

Published
2024
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36. Harnessing information technology for Navy command and control

Author

Edwards, Mark, VADM

Subjects
COMMAND, CONTROL, COMMUNICATIONS AND COMPUTER, COMPUTER NETWORKS, COMPUTERS - Military Applications, COMMUNICATIONS SYSTEMS, MILITARY - United States, NAVY - United States - Equipment
Abstract

illus

Published
2007

38. Fluid Optimisation in Emergency Laparotomy (FLO-ELA) Trial: study protocol for a multi-centre randomised trial of cardiac output-guided fluid therapy compared to usual care in patients undergoing major emergency gastrointestinal surgery

Author

Edwards, Mark R., Forbes, Gordon, Walker, Neil, Morton, Dion G., Mythen, Monty G., Murray, Dave, Anderson, Iain, Mihaylova, Borislava, Thomson, Ann, Taylor, Matt, Hollyman, Marianne, Phillips, Rachel, Young, Keith, Kahan, Brennan C., Pearse, Rupert M., and Grocott, Michael P. W.

Published
2023
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45. Detecting seasonal episodic-like spatiotemporal memory patterns using animal movement modelling

Author

Thompson, Peter R., Derocher, Andrew E., Edwards, Mark A., and Lewis, Mark A.

Subjects
Quantitative Biology - Quantitative Methods
Abstract

1. Spatial memory plays a role in the way animals perceive their environments, resulting in memory-informed movement patterns that are observable to ecologists. Developing mathematical techniques to understand how animals use memory in their environments allows for an increased understanding of animal cognition. 2. Here we describe a model that accounts for the memory of seasonal or ephemeral qualities of an animal's environment. The model captures multiple behaviors at once by allowing for resource selection in the present time as well as long-distance navigations to previously visited locations within an animal's home range. 3. We performed a set of analyses on simulated data to test our model, determining that it can provide informative results from as little as one year of discrete-time location data. We also show that the accuracy of model selection and parameter estimation increases with more location data. 4. This model has potential to identify a specific mechanism in which animals use memory to optimize their foraging, by revisiting temporally and predictably variable resources at consistent time lags., Comment: 23 pages, including title and abstract; 4 tables; 3 figures; one Appendix containing 2 additional tables and 1 additional figure

Published
2021
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49. Meta-studies

Author

Edwards, Mark G., Tognetti, Mara, Section editor, and Maggino, Filomena, editor

Published
2023
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