130,800 research outputs found
Grabow a. d. Oder, Königreich Preußen, Prov. Pommern, Regierungs-Bezirk Stettin, OH
No full textGRABOW A. D. ODER, KÖNIGREICH PREUSSEN, PROV. POMMERN, REGIERUNGS-BEZIRK STETTIN, OH
Grabow a. d. Oder, Königreich Preußen, Prov. Pommern, Regierungs-Bezirk Stettin, OH ( -
Kinetics in the real world: linking molecules, processes, and systems
No full textKohse-Höinghaus K, Troe J, Grabow J-U, Olzmann M, Friedrichs G, Hungenberg K-D. Kinetics in the real world: linking molecules, processes, and systems. Physical Chemistry Chemical Physics. 2018;20(16):10561-10568
FTMW/CVI: FOURIER TRANSFORM MICROWAVE / COHERENCE SPECTROSCOPY WITH VIRTUAL INSTRUMENTS
No full textJ. Ekkers and W. H. Flygare, Rev. Sci. Instrum. 47, 448(1976). G. Bestmann and H. Dreizler, Z. Naturforsch. 37a, 615(1982). H. Dreizler, E. Fliege, H. M\""ader, and W. Stahl, Z. Naturforsch. 37a, 1266(1982). D. A. Andrews and J. G. Baker, J. Phys. B20, 5705(1987). T. J. Balle and W. H. Flygare, Rev. Sci. Instrum. 52, 33(1981). L. H. Coudert, F. J. Lovas, R. D. Suenram, and J. T. Hougen, J. Chem. Phys. 87, 6290(1987). L. Martinache, S. Jans-B\""urli, B. Vogelsanger, W. Kresa, and A. Bauder, Chem. Phys. Lett. 149, 424(1988). R. D. Suenram, F. J. Lovas, and K. Matsumura, Ap. J. Lett. 342, L103(1989). J.-U. Grabow, N. Heineking, and W. Stahl, Z. Naturforsch. 46a, 914(1991). U. Andresen, H. Dreizler, J.-U. Grabow and W. Stahl, Rev. Sci. Instrum. 61, 3694(1990). J.-U. Grabow and W. Stahl, Z. Naturforsch. 45a, 1043(1990)Author Institution: Institut f\""ur Physikalische Chemie und ElektrochemieModern Fourier transform microwave (FTMW) spectroscopy, first implemented as an impulse excitation technique in a steady gas-waveguide , started only a quarter of a century ago. Soon after, the method was supplemented for special applications, e.g. Stark-, double , and spectroscopy. The subsequent implementation of the technique in a supersonic jet-resonator was followed by similar developments, i.e. Stark-, double , laser , and . along with the ``coaxially oriented beam-resonator (COBRA) has greatly increased efficiency, resolution, and sensitivity of current FTMW spectrometers. We present the implementation of a complete COBRA-FTMW spectrometer featuring the capabilities given above. The entire experiment is operated, either interactivle or automatically, by a graphical user interface (GUI)-based program which is capable of waveguide and resonator applications. Developed in the C programming language, while following the concept of virtual instruments (VI), the software can co-operate with a wide variety of PCI and IEEE hardware components to build the instrument. Only one application specific logic circuit, which will also be presented, is needed
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
Blurring out hydrogen: The dynamical structure of teflic acid
No full textThe microwave spectra of 10 teflic acid isotopologues were recorded in the frequency range of 3-25 GHz using supersonic jet-expansion Fourier transform microwave spectroscopy. Despite being asymmetric in its equilibrium structure, the delocalization of the hydrogen atom leads to a symmetric top vibrational ground state structure. In this work, we present the zero point structure obtained from the experimental rotational constants and an approach to determine the semi-experimental equilibrium structure aided by ab initio data. The Te-O bond length determined in the equilibrium structure is accurate to the picometer and can be used as a benchmark for computational methods treating relativistic effects
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.
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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