196,539 research outputs found
Single-molecule force spectroscopy: Heterogeneity of chemical bonds
No full textRaible M, Reimann P. Single-molecule force spectroscopy: Heterogeneity of chemical bonds. Europhysics Letters. 2006;73(4):628-634.We show that the standard theoretical framework in single-molecule force spectroscopy by Evans and Ritchie (Biophys. J., 72 (1997) 1541) has to be extended in order to consistently describe the experimental findings. The basic new concept is to take into account heterogeneity of the chemical bonds, resulting in excellent agreement between theory and experiment
Exact Elimination of Cycles in Graphs
No full textOne of the standard basic steps in drawing hierarchical graphs is to invert some arcs of the given graph to make the graph acyclic. We discuss exact and parameterized algorithms for this problem. In particular we examine a graph class called (1, n)-graphs, which contains cubic graphs. We discuss exact and parameterized algorithms, where we use a non-standard measure approach for the analysis. Especially the analysis of the parameterized algorithm is of special interest, as it is not an amortized analysis modelled by ’finite states’ but is rather a ’top-down’ amortized analysis. For (1, n)-graphs we achieve a running time of O ∗ (1.1871 m) and O ∗ (1.212 k), for cubic graphs O ∗ (1.1798 m) and O ∗ (1.201 k), respectively. As a by-product the the trivial bound of 2 n for Feedback Vertex Set on planar directed graphs is broken
Operation of a large GEM-MSGC detector in a high intensity hadronic test beam using fully pipelined readout electronics
No full text98-060 In a recent test beam experiment at PSI a new tracking device for very high particle fluxes consisting of a low gain micro strip gas chamber (MSGC) combined with a gas electron multiplier (GEM) foil has been run under beam conditions similar to those foreseen in the HERA-B experiment [1], where such devices are being installed for the inner tracker. They are also being evaluated for the LHCb experiment [2]. In both detectors very high, mainly hadronic particle densities (up to 10 4 mm -2 sec -1) are expected, while the momentum resolution of the magnetic spectrometers foreseen in the two experiments is limited by multiple scattering. Also photon conversions represent a significant background source and therefore a minimal thickness in terms of radiation length is important, while position resolution requirements are moderate (typically 300 mu m pitch is sufficient). This paper describes the detailed construction of this novel detector, the test beam configuration and some of the data taken using the full HERA-B readout electronics
Mobile and digital documentation of inpatient treatments. Use of personal digital assistants in addition with the ClinicCoach (c) software
No full textBackground. Documentation of the individual treatment course is essential from medical as well as economic and forensic aspects. With increasing hospital computerization the conventional hardcopy form of record keeping is seen to be associated with high outlays and restrictiveness. Methods. Clinicians engaged consistently in the development of a personal digital assistant (PDA)-based electronic record system (Clinic Coach (c)), which maps the entire course of inpatient treatments. The system's effectiveness was reviewed by means of a standardized questionnaire and analysis of 8,595 data sets relating to PPR and wound findings. Results. In patients undergoing surgery wound findings and PPR were documented in 83.6% and in 94.3% respectively. The ClinicCoach (c) System was rated more effective than paper-based documentation by 78.4% of the testing healthcare workers. Conclusion. The combination of PDAs and ClinicCoach (c) is a reliable and to clinical routine well adapted system that allows digital documentation at the bedside
"Littérature, philologie, linguistique : l'unité de la romanistique"
No full textFrank-Job B, Borreguero Zuloaga M, Gülich E, Raible W, Rastier F. "Littérature, philologie, linguistique : l'unité de la romanistique". In: Buchi É, Chauveau J-P, Pierrel J-M, eds. Actes du XXVIIe Congrès international de linguistique et de philologie romanes (Nancy, 15-20 juillet 2013). Bibliothèque de linguistique romane. Vol 14. Strasbourg: Editions de Linguistique et de Philologie /ÉliPhi; 2014
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Theoretical analysis of dynamic force spectroscopy experiments on ligand-receptor complexes
No full textRaible M, Evstigneev M, Reimann P, Bartels FW, Ros R. Theoretical analysis of dynamic force spectroscopy experiments on ligand-receptor complexes. Journal of Biotechnology. 2004;112(1-2):13-23.The forced rupture of single chemical bonds in biomolecular compounds (e.g. ligand-receptor systems) as observed in dynamic force spectroscopy experiments is addressed. Under the assumption that the probability of bond rupture depends only on the instantaneously acting force, a data collapse onto a single master curve is predicted. For rupture data obtained experimentally by dynamic AFM force spectroscopy of a ligand-receptor bond between a DNA and a regulatory protein we do not find such a collapse. We conclude that the above mentioned, generally accepted assumption is not satisfied and we discuss possible explanations. (C) 2004 Elsevier B.V. All rights reserved
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