45,458 research outputs found
Letter from Arno B. Cammerer to J. R. Eakin
No full textLetter from Arno B. Cammerer to J. R. Eakin describing the procedure for purchasing Bright Angel Trail
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
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
Potenziali evocativi uditivi (BSER e PEA)nei bambini con disturbo specifico di linguaggio e ritardo mentale
No full text
Level of anxiety and perception of dog stress in human mothers and non-mothers
No full textThe aim of the current study was to assess whether and how the presence of a dog can influence the level of
anxiety in mothers with a child and women without children. Moreover, the ability of female dog owners with or without children to recognize sign of stress and to assess the level of stress in their pet was evaluated. For these purposes, 58 mothers of a child (0-6 years old), owning a dog, 84 mothers of a child (0-6 years old) who did not own a dog, and 87 women with a dog but without children filled in two questionnaires. The first questionnaire was the State-Trait Anxiety Inventory Form Y (STAI-Y), consisting of 20 questions for the evaluation of the state anxiety and 20 for the trait anxiety. The second questionnaire was aimed at analysing owner’s perception of stress in their dog.
It was found that female dog owners without children showed a lower trait anxiety. Mothers perceived a lower stress
level in their dogs, compared to owners without children. However, mothers resulted less able to identify the canine signs of stress and the potentially stressful situations for dogs and this could explain the previous result. This lack of communication between owners (in particular mothers) and dogs may lead to a condition of poor dog welfare and turn into canine aggression and dangerous behaviors towards family members, especially children
Sulla prognosi di disturbi specifici di linguaggio:linee operative per la prevenzione dei disturbi di apprendimento
No full textMeasurement of the ratio of branching fractions B(B0→K∗0γ )/B(B0s→φγ ) and the directCP asymmetry inB 0→K∗0γ
No full textThe ratio of branching fractions of the radiative B decays B0→K⁎0γ and B0s→ϕγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of s√=7TeV. The value obtained is
B(B0→K⁎0γ)B(B0s→ϕγ)=1.23±0.06(stat.)±0.04(syst.)±0.10(fs/fd),
where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K⁎0γ), the branching fraction B(B0s→ϕγ) is measured to be (3.5±0.4)×10−5.
The direct CP asymmetry in B0→K⁎0γ decays has also been measured with the same data and found to be
ACP(B0→K⁎0γ)=(0.8±1.7(stat.)±0.9(syst.))%.
Both measurements are the most precise to date and are in agreement with the previous experimental results and theoretical expectations
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