131,572 research outputs found
Colorful 3-D Imaging Using an Infrared Dammann Grating
No full textNational Natural Science Foundation of China [61308073, 61307064]; Science and Technology Commission of Shanghai Municipality [15JC1403500]3-D profilometry is one of the most important branches of measurement science and technology. In this paper, a new colorful 3-D imaging method using near-infrared (NIR) laser (850 nm) dot array generated by a Dammann grating is proposed. Two NIR cameras mounted with narrowband passed filters are adopted to capture laser patterns on objects. A color camera mounted with an infrared cutoff filter is adopted to capture color information. A simplified multiviews' matching method for dot array, which is the key of this 3-D imaging system, is proposed. A new geometric constraint named ray constraint is applied to multiview matching with the help of precalibration of laser dot array. Point clouds with color information are obtained according to triangulation. We used the experimental apparatus to scan a colorful plane with colorful attachments on it, and its colorful point clouds (about 56 000 sample points) were obtained. Experiments demonstrate that this apparatus achieves a depth accuracy of 0.21 mm at the measuring distance of 300 mm. This new colorful 3-D imaging has advantages of low cost, low power consumption, flexible structure, and portability, which should be highly interesting for practical applications
Forward produced hadrons in mu p and mu d scattering and investigation of the charge structure of the nucleon
No full textAshman J, Badelek B, Baum G, et al. Forward produced hadrons in Mu p and Mu d scattering and investigation of the charge structure of the nucleon. Z.Phys. C. 1991;52(3):361-387
R. C., Rose Croix, Robinson Crusoe. Rosenkreuzerisches bei Defoe und Schnabel
No full textBraungart W. R. C., Rose Croix, Robinson Crusoe. Rosenkreuzerisches bei Defoe und Schnabel. In: Dammann G, Sangmeister D, eds. Das Werk Johann Gottfried Schnabels und die Romane und Diskurse des frühen 18. Jahrhunderts. Hallesche Beiträge zur europäischen Aufklärung. Vol 25. Tübingen: Niemeyer; 2004: 113-126
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Geographical Research in the Digital Humanities. Spatial Concepts, Approaches and Methods
No full textDammann F, Kremer D, eds. Geographical Research in the Digital Humanities. Spatial Concepts, Approaches and Methods. Digital Humanities Research. Vol 8 1st ed. Bielefeld: Bielefeld University Press; 2024.The richness of social and cultural theory in the humanities offers countless opportunities for using theory-informed concepts in data-based analysis workflows. The contributors to this volume thus encourage further research utilizing out-of-the-box models and approaches to space and place in the field of Digital Humanities. The collection follows the two complementary goals of providing promising conceptualisations of space and place for a broad audience from Digital Humanities, and of presenting current work in Digital Humanities using different conceptualisations of space and place or offering innovative methods for their analysis
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
Scholarly Communication and Publishing Lunch and Learn Talk #11: The ULS Open Access Author Fee Fund
No full textAt the May 2014 talk, you will learn about the ULS Open Access Author Fee Fund--what it is, why we do it, how it works, and how the program is going so far
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