Every scientist chooses a preferred level of analysis and this choice shapes the research program, even determining what counts as evidence. This contribution revisits Marr's (1982) three levels of analysis (implementation, algorithmic, and computational) and evaluates the prospect of making progress at each individual level. After reviewing limitations of theorizing within a level, two strateg...

Thirty years after Marr’s landmark posthumous book, Vision (Marr, 1982), the argument for which he is most cited remains the distinction between computational, algorithmic and representational, and the implementation levels. In the interim, many reformulations of this basic distinction have been proposed, but is it still relevant? This symposium will discuss whether there is still a place for t...

The causal agent of Huanglongbing disease, 'Candidatus Liberibacter asiaticus', is a non-culturable, gram negative, phloem-limited α-proteobacterium. Current methods to control the spread of this disease are still limited to the removal and destruction of infected trees. In this study, we identified and characterized a regulon from 'Ca. L. asiaticus' involved in cell wall remodeling, that conta...

Fluoroquinolone resistance can cause major clinical problems. Here, we investigated fluoroquinolone resistance mechanisms in a clinical Escherichia coli isolate, HUE1, which had no mutations quinolone resistance-determining regions (QRDRs) of DNA gyrase and topoisomerase IV. HUE1 demonstrated MICs that exceeded the breakpoints for ciprofloxacin, levofloxacin, and norfloxacin. HUE1 harbored oqxA...

Juan C. Duchesne, MD, FACS, FCCP, Norman E. McSwain, Jr., MD, FACS, Bryan A. Cotton, MD, FACS, John P. Hunt, MD, MPH, FACS, Jeff Dellavolpe, MD, Kelly Lafaro, MD, MPH, Alan B. Marr, MD, FACS, Earnest A. Gonzalez, MD, FACS, Herb A. Phelan, MD, FACS, Tracy Bilski, MD, FACS, Patrick Greiffenstein, MD, James M. Barbeau, MD, JD, Kelly V. Rennie, MD, Christopher C. Baker, MD, FACS, Karim Brohi, MD, F...

Dimitrios P. Kontoyiannis, Kieren A. Marr, Benjamin J. Park, Barbara D. Alexander, Elias J. Anaissie, Thomas J. Walsh, James Ito, David R. Andes, John W. Baddley, Janice M. Brown, Lisa M. Brumble, Alison G. Freifeld, Susan Hadley, Loreen A. Herwaldt, Carol A. Kauffman, Katherine Knapp, G. Marshall Lyon, Vicki A. Morrison, Genovefa Papanicolaou, Thomas F. Patterson, Trish M. Perl, Mindy G. Schus...

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Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of ...