1,725,081 research outputs found

    UMNH:Mamm:3930

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    UMNH:Mamm:3930 Voucher specimen study ski

    Brose, 1/3930

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/427883Surname: Brose. Given Name(s) or Initials: . Military Service Number or Last Known Location: 1/3930. Prisoner of War Enquiry Card Index Number: M/756. Division Enquiry: Qld. Rank: Sig. Unit: Malaya326640 Item: [2016.0049.60145] "Brose, 1/3930

    X0(2900)X_0(2900) and χc0(3930)χ_{c0}(3930) in process B+D+DK+B^+\to D^+ D^- K^+

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    This study investigates the nature of the X0(2900)X_0(2900) and χc0(3930)χ_{c0}(3930) based on experimental results of the process B+B^+\toD+DK+D^+ D^- K^+. We focus on the S-wave DK+D^{*-}K^{*+} and Ds+DsD_s^+D_s^- molecular states, which can be related to the X0(2900)X_0(2900) and χc0(3930)χ_{c0}(3930), respectively. Using effective Lagrangians, we construct the potential kernel of the DK+D^{*-}K^{*+}-DK+D^{-}K^{+} and Ds+DsD_s^+D_s^--D+DD^+D^- interactions with a one-boson-exchange model, and determine the scattering amplitudes and their poles through a quasipotential Bethe-Salpeter equation approach. By incorporating the potential kernel into the three-body decay process B+B^+\toD+DK+D^+ D^- K^+, we evaluate the DK+D^-K^+ and D+DD^+D^- invariant mass spectra, as well as the Dalitz plot, with Monte Carlo simulation. A satisfactory fit to the DK+D^-K^+ and D+DD^+D^- invariant mass spectra is achieved after introducing additional Breit-Wigner resonances, the X1(2900)X_1(2900), ψ(3770)ψ(3770), and χc2(3930)χ_{c2}(3930) states. Prominent signals of the X0(2900)X_0(2900) and χc0(3930)χ_{c0}(3930) states appear as peaks in the DK+D^-K^+ and D+DD^+D^- invariant mass spectra near 2900 and 3930 MeV, respectively. Clear event concentration of the X0(2900)X_0(2900) and χ0(3930)χ_0(3930) states is evident as strips in the Dalitz plot. The results suggest that both X0(2900)X_0(2900) and χc0(3930)χ_{c0}(3930) can be interpreted as molecular states, with the inclusion of X1(2900)X_1(2900) and χ2(3930)χ_2(3930) necessary to describe structures in the regions near 2900 and 3930 MeV.9 pages, 5figure

    Oddball Y(4140) as the molecular cousin of Y(3930)

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    In my talk, we present the dynamical study of Y(4140) and Y(3930) under the D-s*(D) over bar (s)* and D*(D) over bar* molecular assignments respectively The importance to theoretically and experimentally study their open-charm decay, hidden-charm decay, radiative decay and double-photon decay is proposed combing with the theoretical calculation of the decay behavior of Y(4140) and Y(3930) According to the recent new experimental progress made by Belle, we further indicate the reasonability of molecular explanation to Y(4140) Another event cluster around 4270 MeV in the J/psi Phi invariant mass spectrum of B -> KJ/psi Phi can provide us more hints to reveal the creation mechanism of molecular structure in B meson decay, which will be helpful to clarify the underlying structure of Y(4140) and Y(3930

    Affix order and interpretation : Quechua

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    Contains fulltext : 3930.pdf (Publisher’s version ) (Open Access

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

    Untersuchung der Zustände Ds1D_{s1}(2536)+^{+} und Z\it Z(3930)

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    Die im Rahmen des BABAR-Experiments untersuchten Elektron-Positron-Annihilationsereignisse bei einer Schwerpunktsenergie von 10,58 GeV stellen eine ergiebige Quelle zur Erzeugung charmhaltiger Resonanzen dar. In Verbindung mit der hervorrangenden Instrumentierung des Detektors wird eine präzise Vermessung dieser Zustände möglich. In der vorliegenden Arbeit wird eine Präzisionsmessung des Ds1(2536)+ durchgeführt. Es werden 8000 Zerfälle des Ds1(2536)+ in D*+KS0 rekonstruiert. Hierauf basierend kann die Masse und die Zerfallsbreite des Ds1(2536)+ mit hoher Präzision bestimmt werden. Zusätzlich wird durch eine Zerfallswinkelanalyse die Spin-Parität des Ds1(2536)+ bestimmt. Im zweiten Teil der Arbeit wird die 2-Photon-Produktion des Z(3930) im Zerfall nach DDbar untersucht. Masse, Zerfallsbreite und Spin-Parität des Z(3930) werden gemessen

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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