1,720,992 research outputs found
LDIC survey 2023: feeling welcome in the community
No full textWe review the level of welcomeness that members of the lattice field theory community feel based on the results of a survey performed in May and June 2023. While respondents reported generally high levels of feeling welcome at the lattice conference, women and people with diverse gender identities, sexual orientations, ethnic backgrounds and religious affiliations feel less included and have more negative experiences at the lattice conference than their peers. Respondents report that they are actively informing themselves about inequities in the community, however a large fraction of survey participants underestimate the severity of the problem, as was found in previous surveys. The survey data indicate that this situation can be most effectively improved by organizing talks and events about issues of diversity and inclusion within the lattice community. Respondents also reported that individual readings of scientific papers on equity and inclusion are effective in giving people agency in making a change and hence it may be helpful to collate a collection of important articles on these topics
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
Get PDFWe 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
Quantum Numbers of Recently Discovered Ωc0 Baryons from Lattice QCD
Get PDFWe present the ground and excited state spectra of Omega(0)(c) baryons with spin up to 7/2 from lattice quantum chromodynamics with dynamical quark fields. Based on our lattice results, we predict the quantum numbers of five Omega(0)(c) baryons, which have recently been observed by the LHCb Collaboration. Our results strongly indicate that the observed states Omega(c)(3000)(0) and Omega(c)(3050)(0) have spin-parity J(P) = 1/2(-), the states Omega(c)(3066)(0) and Omega(c)(3090)(0) have J(P) = 3/2(-), whereas Omega(c)(3119)(0) is possibly a 5/2(-) state
Lattice QCD study of doubly charmed strange baryons
Get PDFWe present the energy spectra of the low-lying doubly charmed baryons using lattice quantum chromodynamics. We precisely predict the ground state mass of the charmed-strange Omega(cc)(1/2(+)) baryon to be 3712(11)(12) MeV which could well be the next doubly charmed baryon to be discovered at the LHCb experiment at CERN. We also predict masses of other doubly charmed strange baryons with quantum numbers 3/2(+), 1/2(-), and 3/2(-)
Semi-supervised learning of order parameter in 2D Ising and XY models using Conditional Variational Autoencoders
Get PDFWe investigate the application of deep learning techniques employing the
conditional variational autoencoders for semi-supervised learning of latent
parameters to describe phase transition in the two-dimensional (2D)
ferromagnetic Ising model and the two-dimensional XY model. For both models, we
utilize spin configurations generated using the Wolff algorithms below and
above the critical temperatures. For the 2D Ising model we find the latent
parameter of conditional variational autoencoders is correlated to the known
order parameter of magnetization more efficiently than their correspondence in
variational autoencoders used previously. It can also clearly identify the
restoration of the symmetry beyond the critical point. The
critical temperature extracted from the latent parameter at larger lattices are
found to be approaching its correct value. Similarly, for the 2D XY model, we
find our chosen network with the latent representation of conditional
variational autoencoders is equally capable of separating the two phases
between the high and low temperatures, again at the correct critical
temperature with reasonable accuracy. Together these results show that the
latent representation of conditional variational autoencoders can be employed
efficiently to identify the phases of condensed matter systems, without their
prior knowledge.Comment: 9 pages, 8 figure
Study of three-flavored heavy dibaryons using lattice QCD
Get PDFWe present results of the first lattice QCD calculation of three-flavored
heavy dibaryons both in the flavor-symmetric and antisymmetric channels. These
dibaryons have spin zero, and are constructed using various possible
combinations of quark flavors with at least one of them as the charm or the
bottom quark, i.e., namely, ,
and ; . We
compute the ground state masses of these dibaryons and the calculations are
performed on three HISQ gauge ensembles of the MILC collaboration,
with lattice spacings 0.1207, 0.0888 and 0.0582 fm. A relativistic
overlap action is employed for the valence light to charm quarks while a
non-relativistic-QCD Hamiltonian with improved coefficients is used for the
bottom quarks. Unlike the doubly heavy tetraquarks, one and two-flavored heavy
dibaryons, for which lattice QCD calculations have predicted deeply bound
strong-interactions-stable states, for these
dibaryons we do not find any such deeply bound state. However, for ,
our results indicate the presence of an energy level MeV below the
lowest two-baryon threshold, which could be relevant for its future
experimental searches. Moreover, we find that the energy difference between the
ground state of and its lowest threshold increases when .
Taken together, our findings indicate the possibility of the existence of the
dibaryon while all other physical three-flavored dibaryons are much
closer to their thresholds suggesting either they are weakly bound or unbound,
resolving which requires further detail study. Our results also point that the
binding of a dibaryon configuration becomes stronger with the increase of its
valence quark masses which suggests an interesting aspect of strong
interactions at multiple scales.Comment: Version published in Phys. Rev.
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
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