// +author:s anderegg +author:anderegg var _ajax_res = { hits: 11, first: 0, results: [ {userid:"s.weber", "refid":"7","repocollections":"","attachment":"","_thumb":"","articletype":"inproceedings","sectionheading":"","title":"Ultrasound Segmentation in Navigated Liver Surgery","year":"2010","author":"Anderegg, S., Peterhans, M., Weber, S.\r\n","booktitle":"Annual Conference of the German Society for Computer and Robot assisted Surgery (CURAC), Nov. 18 - 19","editor":"","pages":"173-177","organization":"","address":"Dusseldorf, Germany","publisher":"","doi":"","pubmed":"","pdflink":"","urllink":"","abstract":"","note":"","tags":""} , {userid:"melanie.zeppel", "refid":"36","repocollections":"","attachment":"","_thumb":"","articletype":"misc","sectionheading":"ESA Bulletin Article","title":"Review of ESA SYMP_21: \u201cMechanisms Leading to Drought Mortality: Links Between Hydraulic Failure, Carbon Starvation and Biotic Causes in Experiments, Observational and Modelling Studies\u201d","year":"2012","author":"Sevanto, S. Zeppel, M.J.B., Anderegg, W. Adams, H.D.","howpublished":"","doi":"","pubmed":"","pdflink":"","urllink":"","abstract":"","note":"","tags":""} , {userid:"s.weber", "refid":"38","repocollections":"","attachment":"","_thumb":"","articletype":"incollection","sectionheading":"","title":"Augmented Reality Image Overlay Projection for Image Guided Open Liver Ablation of Metastatic Liver Cancer","year":"2012","author":"K Gavaghan, S Anderegg, M Peterhans, T Oliveira-Santos, S Weber","booktitle":"AE-CAI 2011, LNCS 7264","editor":"C.A. Linte et al.","pages":"36-46","organization":"","address":"","publisher":"Springer, Heidelberg","isbn":"","doi":"","pubmed":"","pdflink":"","urllink":"","abstract":"","note":"","tags":""} , {userid:"s.weber", "refid":"32","repocollections":"","attachment":"","_thumb":"","articletype":"inproceedings","sectionheading":"","title":"Augmented Reality Image Overlay Projection for Image Guided Open Liver Ablation of Metastatic Liver Cancer","year":"2011","author":"K Gavaghan, S Anderegg, M Peterhans, T Oliveira-Santos, S Weber","booktitle":"Proceedings of the 6th MICCAI 2011 Workshop on Augmented Environments for Computer-Assisted Interventions, Sept. 22","editor":"","pages":"78--88","organization":"","address":"Toronto, Canada","publisher":"","doi":"","pubmed":"","pdflink":"","urllink":"","abstract":"","note":"","tags":""} , {userid:"s.weber", "refid":"41","repocollections":"","attachment":"","_thumb":"","articletype":"inproceedings","sectionheading":"","title":"Augmented Reality Image Overlay Projection for Image Guided Open Liver Ablation of Metastatic Liver Cancer","year":"2012","author":"K Gavaghan, S Anderegg, M Peterhans, T Oliveira-Santos, S Weber","booktitle":"AE-CAI 2011, LNCS 7264","editor":"C.A. Linte et al.(Eds.)","pages":"36-46","organization":"","address":"","publisher":"Springer Heidelberg","doi":"10.1007\/978-3-642-32630-1_4","pubmed":"","pdflink":"","urllink":"","abstract":"","note":"","tags":""} , {userid:"melanie.zeppel", "refid":"52","repocollections":"","attachment":"","_thumb":"","articletype":"article","sectionheading":"","title":"Research frontiers in drought-induced tree mortality: Crossing scales and disciplines ","year":"2015","author":"H Hartmann, H D. Adams, W R. L. Anderegg, S Jansen, M J. B. Zeppel","journal":"New Phytologist","volume":"205","number":"3","pages":"965-969","month":"","doi":"10.1111\/nph.13246","pubmed":"","pdflink":"","urllink":"","abstract":"Sudden and widespread forest die-back and die-off (e.g. Huang & Anderegg, 2012) and increased mortality rates (e.g. Peng et al., 2011) in many forest ecosystems across the globe have been linked to drought and elevated temperatures (Allen et al., 2010; Fig. 1). These observations have caused a focus on the physiological mechanisms of drought-induced tree mortality (e.g. McDowell et al., 2008) and many studies, both observational and manipulative, have been carried out to explain tree death during drought from a physiological perspective (see Table 1 for examples). While it can be difficult to extract a common explanation for these recent papers, an emerging message appears to be that hydraulic failure almost always matters, while the role of carbon starvation and pest attack remain uncertain. Despite this recent wealth of research on the interplay of physiological mechanisms of drought-induced tree death (McDowell, 2011), there are still major knowledge gaps limiting understanding of widespread tree mortality and its prediction in a changing climate. For example, we still do not know answers to basic questions like: (1) whether mortality is increasing globally; (2) why some trees survive and others die in a given drought; (3) which components of tree physiology are critical to modeling tree mortality; and (4) what types and elements of drought are most important in predicting mortality.","note":"","tags":"","weight":52} , {userid:"s.weber", "refid":"15","repocollections":"","attachment":"","_thumb":"","articletype":"inproceedings","sectionheading":"","title":"A Fully Automatic Calibration Framework for Navigated Ultrasound Imaging","year":"2010","author":"M Peterhans, S Anderegg, P Gaillard, T Oliveira-Santos, S Weber","booktitle":"2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), Aug 31 - Sept. 4","editor":"","pages":"1242-1245","organization":"","address":"Buenos Aires, Argentina","publisher":"Ieee","doi":"10.1109\/IEMBS.2010.5626431","pubmed":"21096125","pdflink":"","urllink":"","abstract":"Navigated ultrasound (US) imaging is used for the intra-operative acquisition of 3D image data during image-guided surgery. The presented approach includes the design of a compact and easy to use US calibration device and its integration into a software application for navigated liver surgery. User interaction during the calibration process is minimized through automatic detection of the calibration process followed by automatic image segmentation, calculation of the calibration transform and validation of the obtained result. This leads to a fast, interaction-free and fully automatic calibration procedure enabling intra-operative US calibration being performed by the surgical user.","note":"","tags":"","month":"","journal":"Conf Proc IEEE Eng Med Biol Soc","volume":"2010","number":"","school":"","issn":"1557-170X","isi":"","key":"Peterhans2010","howpublished":""} , {userid:"s.weber", "refid":"44","repocollections":"","attachment":"","_thumb":"","articletype":"article","sectionheading":"","title":"Evaluation of a portable image overlay projector for the visualisation of surgical navigation data: phantom studies.","year":"2012","author":"K Gavaghan, T Oliveira-Santos, M Peterhans, M Reyes, H Kim, S Anderegg, S Weber","journal":"Int J Comput Assist Radiol Surg","volume":"7","number":"4","pages":"547-556","month":"Jul","doi":"10.1007\/s11548-011-0660-7","pubmed":"22015571","pdflink":"","urllink":"","abstract":"Presenting visual feedback for image-guided surgery on a monitor requires the surgeon to perform time-consuming comparisons and diversion of sight and attention away from the patient. Deficiencies in previously developed augmented reality systems for image-guided surgery have, however, prevented the general acceptance of any one technique as a viable alternative to monitor displays. This work presents an evaluation of the feasibility and versatility of a novel augmented reality approach for the visualisation of surgical planning and navigation data. The approach, which utilises a portable image overlay device, was evaluated during integration into existing surgical navigation systems and during application within simulated navigated surgery scenarios.","note":"","tags":"Biopsy,Equipment Design,Feasibility Studies,Humans,Imaging, Three-Dimensional,Lasers,Phantoms, Imaging,Surgery, Computer-Assisted,User-Computer Interface, weber","publisher":"","booktitle":"","editor":"","address":"","school":"","issn":"1861-6429","isi":"","key":"Gavaghan2012","howpublished":""} , {userid:"melanie.zeppel", "refid":"53","repocollections":"","attachment":"","_thumb":"","articletype":"article","sectionheading":"","title":"Tree mortality from drought, insects, and their interactions in a\r\nchanging climate","year":"2015","author":"W.R. L. Anderegg, J. A. Hicke\r\n, R. A. Fisher\r\n, C. D. Allen\r\n, J. Aukema\r\n, B. Bentz\r\n, S. Hood\r\n, J. W. Lichstein\r\n, A.K. Macalady\r\n, N. McDowell, Y. Pan, K. Raffa, A. Sala\r\n, J.\r\nD. Shaw, N.L. Stephenson, C. Tague, and M. Zeppel","journal":"New Phytologist","volume":"Early View","number":"","pages":"","month":"","doi":"DOI:10.1111\/nph.13477","pubmed":"","pdflink":"file:\/\/\/Users\/mzeppel\/Downloads\/Andereggetal2015_NewPhyt_DroughtInsectsInteractions.pdf","urllink":"http:\/\/onlinelibrary.wiley.com\/doi\/10.1111\/nph.13477\/abstract","abstract":"Climate change is expected to drive increased tree mortality through drought, heat stress, and\r\ninsect attacks, with manifold impacts on forest ecosystems. Yet, climate-induced tree mortality\r\nand biotic disturbance agents are largely absent from process-based ecosystem models. Using\r\ndata sets from the western USA and associated studies, we present a framework for determining\r\nthe relative contribution of drought stress, insect attack, and their interactions, which is critical\r\nfor modeling mortality in future climates. We outline a simple approach that identifies the\r\nmechanisms associated with two guilds of insects \u2013 bark beetles and defoliators \u2013 which are\r\nresponsible for substantial tree mortality. We then discuss cross-biome patterns of insect-driven\r\ntree mortality and draw upon available evidence contrasting the prevalence of insect outbreaks\r\nin temperate and tropical regions.We conclude with an overview of tools and promising avenues\r\nto address major challenges. Ultimately, a multitrophic approach that captures tree physiology,\r\ninsect populations, and tree\u2013insect interactions will better inform projections of forest ecosystem\r\nresponses to climate change.","note":"","tags":"","weight":53} , {userid:"melanie.zeppel", "articletype":"article","pages":"1285-1291","author":"H D Adams, M J B Zeppel, W R L Anderegg, H Hartmann, S M Landh\u00e4usser, D T Tissue, T E Huxman, P J Hudson, T E Franz, C D Allen, L D L Anderegg, G A Barron-Gafford, D J Beerling, D D Breshears, T J Brodribb, H Bugmann, R C Cobb, A D Collins, L T Dickman, H Duan, B E Ewers, L Galiano, D A Galvez, N Garcia-Forner, M L Gaylord, M J Germino, A Gessler, U G Hacke, R Hakamada, A Hector, M W Jenkins, J M Kane, T E Kolb, D J Law, J D Lewis, J M Limousin, D M Love, A K Macalady, J Mart\u00ednez-Vilalta, M Mencuccini, P J Mitchell, J D Muss, M J O'Brien, A P O'Grady, R E Pangle, E A Pinkard, F I Piper, J A Plaut, W T Pockman, J Quirk, K Reinhardt, F Ripullone, M G Ryan, A Sala, S Sevanto, J S Sperry, R Vargas, M Vennetier, D A Way, C Xu, E A Yepez, N G McDowell","year":"2017","title":"A multi-species synthesis of physiological mechanisms in drought-induced tree mortality","month":"","journal":"Nature Ecology and Evolution","publisher":"","volume":"1","number":"9","note":"Cited By :1 xD;Export Date: 21 December 2017","tags":"","booktitle":"","editor":"","abstract":"Widespread tree mortality associated with drought has been observed on all forested continents and global change is expected to exacerbate vegetation vulnerability. Forest mortality has implications for future biosphere-atmosphere interactions of carbon, water and energy balance, and is poorly represented in dynamic vegetation models. Reducing uncertainty requires improved mortality projections founded on robust physiological processes. However, the proposed mechanisms of drought-induced mortality, including hydraulic failure and carbon starvation, are unresolved. A growing number of empirical studies have investigated these mechanisms, but data have not been consistently analysed across species and biomes using a standardized physiological framework. Here, we show that xylem hydraulic failure was ubiquitous across multiple tree taxa at drought-induced mortality. All species assessed had 60% or higher loss of xylem hydraulic conductivity, consistent with proposed theoretical and modelled survival thresholds. We found diverse responses in non-structural carbohydrate reserves at mortality, indicating that evidence supporting carbon starvation was not universal. Reduced non-structural carbohydrates were more common for gymnosperms than angiosperms, associated with xylem hydraulic vulnerability, and may have a role in reducing hydraulic function. Our finding that hydraulic failure at drought-induced mortality was persistent across species indicates that substantial improvement in vegetation modelling can be achieved using thresholds in hydraulic function. \u00a9 2017 The Author(s).","address":"","school":"","issn":"","doi":"10.1038\/s41559-017-0248-x","isi":"","pubmed":"","key":"Adams2017","howpublished":"https:\/\/www.scopus.com\/inward\/record.uri?eid=2-s2.0-85031921138&doi=10.1038%2fs41559-017-0248-x&partnerID=40&md5=bf7a7d78fa06fba1ed1b710edc373f9e","urllink":"https:\/\/www.scopus.com\/inward\/record.uri?eid=2-s2.0-85031921138&doi=10.1038%2fs41559-017-0248-x&partnerID=40&md5=bf7a7d78fa06fba1ed1b710edc373f9e","refid":60,"weight":60} ] } ; ajaxResultsLoaded(_ajax_res);